531,398 results on '"ELECTRIC utilities"'
Search Results
2. Mozambique Power Report.
- Subjects
ELECTRIC utilities ,RENEWABLE energy transition (Government policy) - Abstract
An industry report of Power industry in the Mozambique is presented from publisher Fitch Solutions, with topics including market forecast, government's Energy Transition Strategy and leading companies in the industry including Kansai Electric Power Co. Inc.; and the Sumitomo Corp.
- Published
- 2024
3. BMI Research: United States Power Report.
- Subjects
ELECTRIC utilities ,MARKET value ,SWOT analysis - Abstract
An industry report for the power industry in U.S. is presented from publisher BMI, a Fitch Solutions Company with topics including market value, power SWOT, and business forecasts for the industry.
- Published
- 2024
4. Zambia: Power Report Includes 10-year forecasts to 2033.
- Subjects
ELECTRIC utilities - Abstract
An industry report of Power industry in the Zambia is presented from publisher Fitch Solutions, with topics including market forecast and leading companies in the industry including Zesco Ltd.; Zimbabwe Power Co.; and the Zambia Electricity Supply Corp. Ltd.
- Published
- 2024
5. Seeing the Light: Solar power under the midnight sun
- Author
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Orr, Vanessa
- Subjects
Alaska Housing Finance Corp. ,Chugach Electric Association Inc. ,Natural gas ,Electric utilities ,Solar energy ,Green technology ,Business ,Business, regional - Abstract
Putting the role of solar energy into terms Alaskans can understand, Chris Rose draws an analogy. 'Its like fishing in the summer or hunting in the spring and fall,' says [...]
- Published
- 2024
6. A Utility's Journey to [SF.sub.6]-Free Dead Tank Breakers: Eversource Energy successfully pilots an alternative circuit breaker to [SF.sub.6], enabling it to transition toward a more environmentally sustainable transmission grid
- Author
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Melzen, Paul J. and Schulz, Thomas
- Subjects
Eversource Energy ,Electric utilities ,Environmental sustainability ,Electronics and electrical industries - Abstract
In the middle of December 2023, at a substation in central Connecticut, a small group bundled in warm clothes braved the freezing temperature and biting cold wind to witness a [...]
- Published
- 2024
7. Crowdsourcing Underground Monitoring: Duquesne Light Company conducts an open innovation challenge, crowdsourcing proposals from around the world, to improve underground cable monitoring
- Author
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Ganjoo, Kartik, Gould, Josh, Montz, Dave, and Saporito, Richard
- Subjects
Duquesne Light Co. ,Safety regulations ,Electric utilities ,Occupational safety and health ,Power lines ,Crowdsourcing ,Occupational health and safety - Abstract
As the electric utility serving the Pittsburgh, Pennsylvania, U.S., region, safety is and always has been Duquesne Light Company's top priority--both for its employees and customers. Because of the inherent [...]
- Published
- 2024
8. Multi-demand-side resource regulation capacity assessment for distribution network safety and security.
- Author
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Han, Yanhai and Lin, Xu
- Subjects
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ELECTRIC utilities , *COMPUTER network security , *SECURITIES industry laws , *SAFETY regulations , *WIND power - Abstract
Taking into account the multiple demand differences and the existence of distribution network faults, the study conducts a multiple demand-side resource regulation capability assessment for distribution network safety and security as a way to achieve distribution network resource regulation optimization. The study considers multiple demands and adopts the correlation depth wandering algorithm to assess node faults in the distribution network, and proposes a quantitative assessment strategy for multiple demand-side resource regulation capability, and constructs an index system for assessing the resource regulation capability of the distribution network, and carries out the assessment of the resource regulation capability of the multiple demand-side resources. The results show that the regulation efficiency of wind power, thermal power, solar power and hydro power is above 20%, i.e., the combined regulation efficiency of the four energy sources is able to reach above 80%. The results show that the multi-demand-side resource regulation capability for distribution network security can be significantly improved, and the findings of the study have an important practical value for the electric power industry in terms of resource regulation and security, as well as providing a strong support for the sustainable development of the industry. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
9. A multi‐objective low‐voltage ride‐through control strategy for three‐phase grid‐interfaced solar power plant during symmetrical and asymmetrical faults†.
- Author
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Singh, Abhishek Kumar, Tiwari, Dinesh Kumar, Choudhury, Nalin Behari Dev, and Singh, Jiwanjot
- Subjects
- *
SOLAR power plants , *ELECTRIC utilities , *POWER resources , *REACTIVE power , *SOLAR energy - Abstract
Summary: This paper presents a low‐voltage ride‐through capability (LVRT) solution for the photovoltaic (PV) grid‐connected inverters compliant with the Indian grid code. The LVRT strategy ensures the uninterrupted connection of solar energy to the grid, safeguarding against system shutdown in the event of various grid faults. During this time, the inverter supplies reactive power to the utility grid, effectively utilizing converter capacity and aiding the restoration of the voltage profile at the point of common coupling (PCC). The system used in this study involves a two‐stage grid‐interfaced solar PV setup with a boost converter that tracks the maximum power point (MPP) and an inverter that maintains the DC‐link voltage. A modified dynamic braking chopper control (MDBCC) has also been implemented to minimize the DC‐link voltage oscillations during asymmetrical faults while simultaneously injecting the sinusoidal current into the grid. To improve grid synchronization in the presence of unbalanced abnormalities, a modified dual second‐order generalized integrator phase‐locked loop (DSOGI‐PLL) has been employed to track the grid voltage angle precisely. Furthermore, a new control system has been developed in conjunction with the LVRT approach. The suggested system is simulated in MATLAB/Simulink to validate the efficacy of the LVRT control method during symmetrical and asymmetrical faults using a 100‐kW two‐stage grid‐interfaced solar PV facility. Finally, for experimental validation, a real‐time test bench (RTS) OPAL‐RT 4510 is used to implement the setup with its control, and the practical results are compared with the simulation outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
10. Identification of causative factors for fatal accidents in the electric power industry using text categorization and catastrophe association analysis techniques.
- Author
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Cao, Kunyu, Chen, Shu, Zhang, Xinkai, Chen, Yun, Li, Zhi, and Wang, Dianxue
- Subjects
ELECTRIC utilities ,ELECTRICAL injuries ,ELECTRIC power ,FACTOR analysis ,INDUSTRIAL safety - Abstract
The electric power industry is a high-risk industry with frequent accidents. To ensure the life safety of employees and reduce the probability of accidents, it is necessary to utilize certain technical means to identify the main causative factors in electric fatal accident reports. This research proposes an accident causation identification method that combines text categorization and catastrophe association analysis. First, an improved text feature extraction method (TF-IDF-GloVe-LDA) is proposed by fusing term frequency-inverse document frequency (TF-IDF), global vectors for word representation (GloVe), and latent dirichlet allocation (LDA) algorithms. Then, an SVM classifier was used to categorize the 473 accident report texts into five categories, ACCIDENT, PROCESS, CAUSE, PROBLEM, and RESPONSE, based on the extracted text feature vectors. Second, for the 461 CAUSEs categorized from the accident report texts, the TF-IDF algorithm is utilized to mine them to obtain 62 accident causative factors. Using the word cloud map and semantic network, a visualization analysis is performed to reveal the intrinsic connection between causative factors. The human factor analysis and classification system (HFACS) is combined to construct a framework and a Boolean dataset for electric power fatal accident causative factors. Finally, the catastrophe progression method is utilized to improve the FP-growth algorithm and propose a catastrophe association analysis method. It is utilized to mine the Boolean dataset to obtain 28 association rules and construct the accident causal network. The main causative factors were ultimately identified by analyzing the critical causal chains within the network and examining the frequency and sensitivity of each node. The findings of this study indicate that a lack of effective management, supervision, and training serves as the fundamental cause of fatal accidents in the electric power industry when compared to equipment and environmental factors. This paper offered a fresh perspective on identifying primary accident causative factors in non-standardized text and exploring their intricate mechanisms of interaction, which holds significant implications for the pre-control management of accidents in the power industry. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
11. A multi‐objective low‐voltage ride‐through control strategy for three‐phase grid‐interfaced solar power plant during symmetrical and asymmetrical faults†.
- Author
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Singh, Abhishek Kumar, Tiwari, Dinesh Kumar, Choudhury, Nalin Behari Dev, and Singh, Jiwanjot
- Subjects
SOLAR power plants ,ELECTRIC utilities ,POWER resources ,REACTIVE power ,SOLAR energy - Abstract
Summary: This paper presents a low‐voltage ride‐through capability (LVRT) solution for the photovoltaic (PV) grid‐connected inverters compliant with the Indian grid code. The LVRT strategy ensures the uninterrupted connection of solar energy to the grid, safeguarding against system shutdown in the event of various grid faults. During this time, the inverter supplies reactive power to the utility grid, effectively utilizing converter capacity and aiding the restoration of the voltage profile at the point of common coupling (PCC). The system used in this study involves a two‐stage grid‐interfaced solar PV setup with a boost converter that tracks the maximum power point (MPP) and an inverter that maintains the DC‐link voltage. A modified dynamic braking chopper control (MDBCC) has also been implemented to minimize the DC‐link voltage oscillations during asymmetrical faults while simultaneously injecting the sinusoidal current into the grid. To improve grid synchronization in the presence of unbalanced abnormalities, a modified dual second‐order generalized integrator phase‐locked loop (DSOGI‐PLL) has been employed to track the grid voltage angle precisely. Furthermore, a new control system has been developed in conjunction with the LVRT approach. The suggested system is simulated in MATLAB/Simulink to validate the efficacy of the LVRT control method during symmetrical and asymmetrical faults using a 100‐kW two‐stage grid‐interfaced solar PV facility. Finally, for experimental validation, a real‐time test bench (RTS) OPAL‐RT 4510 is used to implement the setup with its control, and the practical results are compared with the simulation outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
12. Studying the risk spillover effects of the carbon market and high-carbon-emission industries under economic uncertainty.
- Author
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Jiatong Han, Qing Sun, and Yanbo Jiang
- Subjects
ECONOMIC uncertainty ,CARBON nanofibers ,GRANGER causality test ,ELECTRIC utilities ,CARBON pricing ,PRICE indexes - Abstract
In this paper, we select the China Carbon Market Price Index, which reflects the overall price changes in China's carbon market (CCM), and employs the TVP- VAR-BK model to examine the risk spillover effects between the carbon market and high-carbon-emission industries in China from a frequency domain viewpoint. Employing the nonparametric quantile Granger causality test, it delves further into the effects of economic policy uncertainty (EPU) in China on the degree of risk spillovers between the carbon market and high-carbon- emission industries. There are significant risk spillover effects between the carbon market and high-carbon-emission industries. During the short term, the carbon market affects the cement industry more than the electric power and steel industries. However, the carbon market is affected by the volatility of the high-carbon-emission industries over the long term. In addition, the effect of EPU on the magnitude of risk spillovers between the carbon market and high- carbon-emission industries is nonsignificant at extreme quartiles and significant at the middle quartile level, which is typically asymmetric. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
13. Fallen detection of power distribution poles in UAV inspection using improved YOLOX with particle swarm optimization.
- Author
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Jiang, Hao, Wang, Ben, Wu, Li, Chen, Jing, Liu, Xinyu, and Miao, Xiren
- Subjects
PARTICLE swarm optimization ,LABOR costs ,DATA augmentation ,ELECTRIC utilities ,POWER transmission - Abstract
Fault detection of electrical poles is part of the daily operation of power utilities to ensure the sustainability of power transmission. This paper develops a method for intelligent detection of fallen poles based on the improved YOLOX. The hyper-parameters in this method are optimized automatically by Particle Swarm Optimization (PSO) including batch size and input resolution. During parameter optimization, a specific comprehensive evaluation metric is presented as the fitness function to obtain optimal solutions with low labor cost and high method performance. In addition, virtual pole images are generated by 3D Studio Max to overcome the imbalance problem of normal and fault data. The results show that the proposed method can achieve 95.7% of recall and 98.9% of precision, which demonstrates the high accuracy of the method in fallen pole detection. In the comparative experiment, the proposed PSO-YOLOX method is superior to the existing methods including original YOLOX and Faster R-CNN, which verifies the effectiveness of automatic optimization and virtual data augmentation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. Resource-Saving Overcurrent Protection.
- Author
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Issabekov, Dauren Dzhambulovich, Kislov, Aleksandr Petrovich, Markovskiy, Vadim Pavlovich, Zhumataev, Nurlybek Shakaevich, Zhumadirova, Aliya Kairullovna, and Narynbayev, Damir Serikovich
- Subjects
- *
OVERCURRENT protection , *INDUCTION coils , *ELECTRIC utilities , *ELECTROMAGNETIC induction , *DESIGN protection , *CURRENT transformers (Instrument transformer) - Abstract
Construction of relay protections of electrical installations without the use of bulky metal- and insulation-intensive measuring current transformers (CTs) was repeatedly discussed at Conferences of the International Council on Large Electric Systems (CIGRE) as a challenge for the electric power industry. In the article, the authors present resource-saving reed switch current protection for 6–10-kV electrical installations connected to switchgear cells, which is an alternative to traditional protections. The scientific novelty of the work lies in (a) reed switch protection design on the basis of measuring the magnetic induction in different modes and at different points inside a cell, and we prove that inductance values are sufficient to detect phase short-circuits in electrical installations fed from this cell and derive the dependence of the induction on the position of an inductance coil inside the cell; (b) proven possibility of using the simplest formula of the Biot–Savart law for the calculations if the experimentally obtained coefficients are introduced into it; (c) development of a technique for calculating the parameters of the overcurrent protection based on reed switches. Experimental results are presented in graphical form and clearly show the points of EMS maxima and minima. Settings for resource-saving current protection are selected and a feasibility study of the effectiveness of resource-saving overcurrent protection is carried out. A technical and economical assessment of the efficiency of the suggested overcurrent protection is conducted. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
15. Performance of Robust Type-2 Fuzzy Sliding Mode Control Compared to Various Conventional Controls of Doubly-Fed Induction Generator for Wind Power Conversion Systems.
- Author
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Rouabhi, Riyadh, Herizi, Abdelghafour, and Djerioui, Ali
- Subjects
- *
SLIDING mode control , *WIND energy conversion systems , *INDUCTION generators , *REACTIVE power , *ELECTRIC utilities - Abstract
This paper presents a novel hybrid type-2 fuzzy sliding mode control approach for regulating active and reactive power exchanged with the utility grid by a doubly-fed induction generator in a wind energy conversion system. The main objective of this hybridization is to eliminate the steady-state chattering phenomenon inherent in sliding mode control while improving the transient delays caused by type-2 fuzzy controllers. In addition, the proposed control approach has proven to be successful in coping with varying generator parameters and exhibited good reference tracking. An in-depth comparative study with state-of-the-art advanced control techniques is also the focus of the present paper. The comparative study has three objectives, namely: a qualitative comparative study that aims to compare response times and reference tracking capabilities; a quantitative evaluation that takes into account time-integrated performance criteria; and finally, robustness capabilities. The simulation results, carried out in the Matlab/Simulink environment, have demonstrated the effectiveness and best performance of the proposed hybrid type-2 fuzzy sliding mode control with respect to other advanced techniques included in the comparison study. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
16. NTL-Unet: A Satellite-Based Approach for Non-Technical Loss Detection in Electricity Distribution Using Sentinel-2 Imagery and Machine Learning.
- Author
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Gremes, Matheus Felipe, Gomes, Renato Couto, Heberle, Andressa Ullmann Duarte, Bergmann, Matheus Alan, Ribeiro, Luísa Treptow, Adamski, Janice, dos Santos, Flávio Alves, Moreira, André Vinicius Rodrigues, Lameirão, Antonio Manoel Matta dos Santos, de Toledo, Roberto Farias, de C. Filho, Antonio Oseas, Andrade, Cid Marcos Gonçalves, and Lima, Oswaldo Curty da Motta
- Subjects
- *
ELECTRIC utilities , *ELECTRIC power distribution , *COMPUTER vision , *REMOTE-sensing images , *CITIES & towns - Abstract
This study introduces an orbital monitoring system designed to quantify non-technical losses (NTLs) within electricity distribution networks. Leveraging Sentinel-2 satellite imagery alongside advanced techniques in computer vision and machine learning, this system focuses on accurately segmenting urban areas, facilitating the removal of clouds, and utilizing OpenStreetMap masks for pre-annotation. Through testing on two datasets, the method attained a Jaccard index (IoU) of 0.9210 on the training set, derived from the region of France, and 0.88 on the test set, obtained from the region of Brazil, underscoring its efficacy and resilience. The precise segmentation of urban zones enables the identification of areas beyond the electric distribution company's coverage, thereby highlighting potential irregularities with heightened reliability. This approach holds promise for mitigating NTL, particularly through its ability to pinpoint potential irregular areas. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
17. Temporal Refinement of Major Primary Air Pollutant Emissions Based on Electric Power Big Data: A Case of the Cement Industry in Tangshan City.
- Author
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Bai, Xiaoxuan, Li, Peng, Zhou, Weiqing, Wu, Huacheng, Li, Chao, and Zhou, Zilong
- Subjects
- *
AIR pollution control , *AIR pollution prevention , *EMISSIONS (Air pollution) , *ELECTRIC utilities , *ENVIRONMENTAL protection - Abstract
High-temporal resolution and timely emission estimates are essential for developing refined air quality management policies. Considering the advantages of extensive coverage, high reliability, and near real-time capabilities, in this work, electric power big data (EPBD) was first employed to obtain accurate hourly resolved facility-level air pollutant emissions information from the cement industries in Tangshan City, China. Then, the simulation optimization was elucidated by coupling the data with the weather research and forecasting (WRF)-community multiscale air quality (CMAQ) model. Simulation results based on estimated emissions effectively captured the hourly variation, with the NMB within ±50% for NO2 and PM2.5 and R greater than 0.6 for SO2. Hourly PM2.5 emissions from clinker production enterprises exhibited a relatively smooth pattern, whereas those from separate cement grinding stations displayed a distinct diurnal variation. Despite the remaining underestimation and/or overestimation of the simulation concentration, the emission inventory based on EPBD demonstrates an enhancement in simulation results, with RMSE, NMB, and NME decreasing by 9.6%, 15.8%, and 11.2%, respectively. Thus, the exploitation of the vast application potential of EPBD in the field of environmental protection could help to support the precise prevention and control of air pollution, with the possibility of the early achievement of carbon peaking and carbon neutrality targets in China and other developing countries. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
18. Holiday Peak Load Forecasting Using Grammatical Evolution-Based Fuzzy Regression Approach.
- Author
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Guo Li, Xiang Hu, Shuyi Chen, Kaixuan Chang, Peiqi Li, and Yujue Wang
- Subjects
PEAK load ,REGRESSION analysis ,BEES algorithm ,FORECASTING ,ELECTRIC utilities ,FUZZY neural networks ,ADAPTIVE fuzzy control - Abstract
Peak load forecasting plays an important role in electric utilities. However, the daily peak load forecasting problem, especially for holidays, is fuzzy and highly nonlinear. In order to address the nonlinearity and fuzziness of the holiday load behaviors, a grammatical evolution-based fuzzy regression approach is proposed in this paper. The proposed hybrid approach is based on the theorem that fuzzy polynomial regression can model all fuzzy functions. It employs the rules of the grammatical evolution to generate fuzzy nonlinear structures in polynomial form. Then, a two-stage fuzzy regression approach is used to determine the coefficients and calculate the fitness of the fuzzy functions. An artificial bee colony algorithm is used as the evolution system to update the elements of the grammatical evolution system. The process is repeated until a fuzzy model that best fits the load data is found. After that, the developed fuzzy nonlinear model is applied to forecast holiday peak load. Considering that different holidays possess different load patterns, a separate forecaster model is built for each holiday. Test results on real load data show that an averaged absolute percent error less than 2% can be achieved, which significantly outperforms existing methods involved in the comparison. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. Transient response of a megawatt-scale solar photovoltaic in an electric distribution utility.
- Author
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Judith, Paolo Justine and Dellosa, Jeffrey T.
- Subjects
RENEWABLE energy sources ,ELECTRIC power ,CLEAN energy ,ELECTRIC utilities ,ENERGY development - Abstract
There is an increasing trend among customers of an electrical distribution utility to adopt grid-tied solar photovoltaic systems. This shift offers multiple benefits to consumers, including lower monthly electricity bills and a contribution to the development of green energy. For the electrical distribution utility, various impacts may arise due to varying levels of solar energy penetration. This study investigates the effects of integrating varying levels of solar photovoltaic penetration into the commercial consumer network of Cagayan de Oro Electric Power and Light Company (CEPALCO) in the Philippines. Utilizing PowerWorld simulator, the research evaluates 11 different scenarios with solar penetration levels adjusted according to the percentage of load demand. Key findings include alterations in solar megavolt ampere of reactive power output, bus voltage levels, transformer power loading, and transmission line ampacity, with frequency levels remaining stable across scenarios. The optimal solar penetration level was identified at 70%, balancing the benefits of solar energy integration with the need to maintain grid stability and operational limits. This optimal level ensures the effective utilization of renewable energy sources without compromising the performance of CEPALCO's electrical infrastructure. The research concludes with recommendations for maintaining grid stability and operational limits at the optimal solar penetration limits. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
20. Machine Learning Model Development to Predict Power Outage Duration (POD): A Case Study for Electric Utilities.
- Author
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Ghasemkhani, Bita, Kut, Recep Alp, Yilmaz, Reyat, Birant, Derya, Arıkök, Yiğit Ahmet, Güzelyol, Tugay Eren, and Kut, Tuna
- Subjects
- *
ELECTRIC utilities , *ELECTRIC power failures , *FEATURE selection , *ELECTRIC power distribution grids , *PUBLIC utilities , *MACHINE learning , *BOOSTING algorithms - Abstract
In the face of increasing climate variability and the complexities of modern power grids, managing power outages in electric utilities has emerged as a critical challenge. This paper introduces a novel predictive model employing machine learning algorithms, including decision tree (DT), random forest (RF), k-nearest neighbors (KNN), and extreme gradient boosting (XGBoost). Leveraging historical sensors-based and non-sensors-based outage data from a Turkish electric utility company, the model demonstrates adaptability to diverse grid structures, considers meteorological and non-meteorological outage causes, and provides real-time feedback to customers to effectively address the problem of power outage duration. Using the XGBoost algorithm with the minimum redundancy maximum relevance (MRMR) feature selection attained 98.433% accuracy in predicting outage durations, better than the state-of-the-art methods showing 85.511% accuracy on average over various datasets, a 12.922% improvement. This paper contributes a practical solution to enhance outage management and customer communication, showcasing the potential of machine learning to transform electric utility responses and improve grid resilience and reliability. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
21. Experimental Methodology to Optimize Power Flow in Utility Grid with Integrated Renewable Energy and Storage Devices Using Hidden Markov Model.
- Author
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Karthik, T. S., Kamalakkannan, D., Murugesan, S., Patra, Jyoti Prasad, Walid, Md. Abul Ala, Chenchireddy, Kalagotla, A, Syed Musthafa, and Jagadish Kumar, B.
- Subjects
- *
HIDDEN Markov models , *RENEWABLE energy sources , *ELECTRIC utilities , *ENERGY storage , *DEEP reinforcement learning , *ELECTRICAL load , *MICROGRIDS - Abstract
A continuous energy supply to the load side is required by modern power systems. This calls for a sound understanding of how to forecast load demand in the present and the future with the least degree of inaccuracy. Typically, a sequential method with two steps—forecasting and optimization—is used to derive judgments from data. For achieving this goal, optimized power flow is focused in this paper through load forecasting, mode selection, and optimization of power forecasting. Firstly, load forecasting is implemented using time series, and economic and weather-related information for the different consumer's load. Then mode selection is implemented using Hidden Markov Model that determines the requested load for grid-connected or RES mode. When composite RES is developed, the percentage of serviced load rises as more renewable energy sources are added. Following the implementation of the consumer load and mode selection, optimization is used to improve the power flow. The empirical findings show enhanced prescriptive performance when compared to answers found in single- and multi-household contexts. Also, we offer insightful information on how explaining performance is described. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
22. Phasing out carbon not coal? Identifying coal lock-in sources in Japan's power utilities.
- Author
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Trencher, Gregory, Okubo, Yuri, and Mori, Akihisa
- Subjects
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ELECTRIC utilities , *CARBON sequestration , *COAL , *COAL-fired power plants , *COAL gasification , *BIOMASS gasification - Abstract
Lock-in to existing assets and business practices is a major obstacle to the global objective of phasing out coal-fired power to accelerate decarbonization towards Paris Agreement goals. Japan has attracted attention in previous literature, with several studies demonstrating how market and political conditions have propelled investments in new coal-fired power plants while raising barriers to achieving a phase-out. But in addition to market-level conditions, firm-level characteristics – including assets, commitments, investment behaviour and future-oriented innovation activities – are also critical determinants of lock-in vulnerability. To deepen understanding of how such firm-level dynamics might affect the power industry, this empirical study takes the case of ten incumbent utilities in Japan to identify and compare potential sources of coal lock-in. We leverage diverse quantitative and qualitative data to assess the state of: (1) management, assets and operational factors; and (2) the development and deployment of next-generation coal technologies. Through this two-fold approach, we demonstrate how current conditions and future-oriented activities are likely to reinforce tendencies to continue using coal in coming decades, thereby hampering the emergence of phase-out ambitions. These findings harbour important implications for climate policy and the urgent need to end coal burning in the power sector. Japan's major power utilities all intend to maintain coal in power mixes while transitioning to net-zero by 2050, aiming to eliminate carbon emissions rather than coal-fired power per se. Ambitions to reduce dependence on coal are weakened by a multitude of potential lock-in sources across individual utilities. All utilities are attempting to commercialize next-generation technologies such as co-firing with ammonia and biomass, carbon capture and coal gasification. Phasing out coal in Japan thus requires climate policies that incentivize the development and diffusion of non-emitting power sources that offer faster emissions reduction than expensive and unproven technologies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
23. Innovation ecosystems in developing markets: empirical evidence from Russian electric power industry.
- Author
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Burda, Egor and Gavrikova, Elizaveta
- Subjects
- *
ELECTRIC utilities , *ECOSYSTEMS , *ELECTRIC power production , *EMERGING markets - Abstract
Following the rise of innovation ecosystems (IEs) in various sectors around the world, we observe a corresponding increase in IE-related studies. And while the existing body of knowledge provides a rather solid conceptualisation of the phenomenon and its distinctive characteristics, we still lack an understanding of its structure, the behaviour of participants, governance, and regulation. At the same time, most of the IE-related studies are conducted within developed contexts, which limits the generalizability of available evidence. Our study aims to fill the abovementioned gaps in the literature and makes several contributions. First, our results shed more light on the structure of IE and the role of the focal firm. Second, the study provides important empirical evidence on peculiarities of behaviour among IE participants and the composition of various IEs thus enhancing our understanding of IE development processes. Third, this research provides insights into tactics and governance mechanisms within the studied IEs, therefore, expanding the current body of knowledge on IE governance and regulation. Finally, we complement the existing body of literature with additional empirical evidence from an emerging market context. Results of this study also include valuable empirical implications for managers and policymakers in the context of the expanding IE-related activities. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
24. A real-time embedded system designed for NILM studies with a novel competitive decision process algorithm.
- Author
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ÇINAR, Said Mahmut, DOĞAN, Rasim, and AKARSLAN, Emre
- Subjects
- *
ELECTRIC measurements , *ELECTRIC utilities , *DECISION making , *HARMONIC analysis (Mathematics) , *SYSTEMS design - Abstract
This paper explores the determination of any load or load combination in a power system at any moment. This process requires measurements at the main electric utility service entry of a house, known as nonintrusive measurement. To accurately identify loads, total harmonic distortion, RMS, third harmonic currents, and power consumption are considered their fingerprints. Based on these fingerprints, an algorithm called the competitive decision process is developed and integrated into an embedded system. This algorithm has a two-level decision mechanism. In the first stage, the winner loads with the highest similarity scores from each feature are determined, and the loads with a similarity score higher than 90 move to the second stage to be evaluated. Loads that do not pass the first stage in all features are not considered for the next one. In the second stage, the scores from each feature of the loads passed to this stage are summed, and the load with the highest score is determined. It is experimentally validated that the method significantly detects correct load or load combinations for six residential appliances. Fifty-six type-tests are performed, and each type-test contains ten measurements. As a result, a total success rate of over 97 percent is obtained in all metrics. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
25. Duke Energy Corporation SWOT Analysis.
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ELECTRIC utilities ,ELECTRIC industries ,SWOT analysis - Abstract
A SWOT analysis of Duke Energy Corporation is presented.
- Published
- 2024
26. American Electric Power Company, Inc. Co SWOT Analysis.
- Subjects
ELECTRIC utilities ,SWOT analysis - Abstract
A SWOT analysis of American Electric Power Company, Inc. is presented.
- Published
- 2024
27. Power Grid Corporation of India Limited SWOT Analysis.
- Subjects
SWOT analysis ,ELECTRIC utilities - Abstract
A SWOT analysis of Power Grid Corporation of India Limited is presented.
- Published
- 2024
28. Electricity Generating Authority of Thailand SWOT Analysis.
- Subjects
ELECTRIC utilities ,SWOT analysis - Abstract
A SWOT analysis of Electricity Generating Authority of Thailand is presented.
- Published
- 2024
29. Comparative analysis of the calculation of electricity losses in 10-6-0.4 kV distribution networks.
- Author
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Nazirova, Hilola, Badalov, Abdumalik, and Jo'Rayev, Ravshan
- Subjects
- *
ELECTRIC utilities , *REAL economy , *SOCIALIZATION , *ELECTRICITY , *COMPARATIVE studies - Abstract
The electric power industry is an integral component that ensures the economic well-being of any country. Without a technologically modern, investment-attractive electric power industry, it is impossible to achieve sustainable GDP growth. It is this sphere that provides an opportunity for the consistent development of real sectors of the economy, comfortable life of citizens, creates conditions for the continuous functioning of such important social spheres as education, social security, medical and public services. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
30. Tenaga Nasional Berhad SWOT Analysis.
- Subjects
ELECTRIC utilities ,SWOT analysis - Abstract
A SWOT analysis of Tenaga Nasional Berhad is presented.
- Published
- 2024
31. MarketLine Company Profile: EnBW Energie Baden-Wurttemberg A.G.
- Subjects
ELECTRIC utilities - Abstract
EnBW Energie Baden-Wuerttenberg AG (EnBW or ‘the company’) is a power generation and utility company. The company operates in Germany and other parts of Central and Eastern Europe. It is headquartered in Karlsruhe, Germany and employed 20,092 people as of December 31, 2014.
- Published
- 2024
32. Chubu Electric Power Company, Incorporated SWOT Analysis.
- Subjects
ELECTRIC utilities ,SWOT analysis - Abstract
A SWOT analysis of Chubu Electric Power Company, Inc. is presented.
- Published
- 2024
33. Evaluation of 7, 9 and 11 level inverter grid-connected photovoltaic system.
- Author
-
Thakur, Sachin, Sharma, Kamalkant, and Gupta, Akhil
- Subjects
- *
PHOTOVOLTAIC power systems , *ELECTRON tube grids , *RENEWABLE energy sources , *ELECTRIC utilities , *ELECTRIC power production , *ELECTRIC power - Abstract
For researchers working for electric utilities, using renewable energy sources to lessen the impact of various uncertainties on electric power networks is a hot topic. The usage of Photovoltaic (PV) systems for electricity generation would become widely accessible in the future due to a number of anticipated cost savings. Enhancing Power Quality (PQ) becomes imperative for utility-grid connected systems. In this study, the Cascaded H-bridge (CHB) architecture, which is based on solar photovoltaic (SPV) as a DC (Direct Current) source, is used to examine the performance of a grid-connected system. Simulink/MATLAB software is used for the imitation model. Imitation models are carried out for SPV connected to CHB multilevel inverter (MLI) system. The paper analyzes various parameters including solar, grid and MLI output such voltage, current and power. In this study, a comparison of 7-level, 9-level and 11-level CHB MLI is presented. Different results are analyzed and based on a comparative analysis; the imitation model results are shown to be accurate. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
34. Double stage three phase grid connected solar inverter.
- Author
-
Sowmya, Suchitra, Vischitha, Nagaveni, and Doddabasappa
- Subjects
- *
DISTRIBUTED power generation , *DC-to-DC converters , *MAXIMUM power point trackers , *PULSE width modulation , *PHOTOVOLTAIC power systems , *PHASE-locked loops , *ELECTRIC utilities , *ELECTRICAL energy - Abstract
The photo voltaic technology is one of an emergent technology, helping in the production of electrical energy. The demand for this technology has been increased globally due to the rapid increase in population growth. This rapid increase requires an emergent technology which helps in providing solution for the electric utilities. Solar Voltaic system helps in assisting the existing power system. This system is a kind of distributed power generation system. This is one of the best technologies to provide solution for present scenario. In this paper, the double stage three-phase grid-connected solar inverter is explained. The complete modelling is presented in MATLAB-Simulink environment for the switching model of a grid connected solar inverter. MPPT technique is also used to track the maximum power in the simulation. Phase lock loop technique is used to synchronize the PV system with a certain phase. The importance of the inverter modelling, outer voltage loop, inner current loop considering the connection requirements, the double stage controller is fabricated. The complete model is designed in the MATLAB environment. The present article thoroughly examines the two-stage three-phase grid-connected photovoltaic (PV) system. The paper describes the modeling of a single PV system's switching mechanism in phases. It emphasizes the importance of inverter control to meet future connectivity requirements. The double loop controller is used to regulate both the boost converter and inverter. Vector-oriented and feed-forward control techniques are employed to create the inverter controller. Additionally, the article discusses the significance of extracting positive and negative sequences. In the MATLAB environment, the entire model is created. Solar PV systems are classified as distributed generation since they aid existing power systems in meeting electricity demand for load changes. In this paper, a stand-alone PV system is connected to a three-phase grid, which includes a PV array, the Perturb and Observe (P and O) Maximum Power Point Tracking (MPPT) technique for tracking maximum power from the PV array, and the Duty Cycle adjustment for switching pulses to the Boost Converter's High-Level Switch. With Pulse-Width Modulation (PWM) control, the 2-level inverter converts DC to AC. The Phase Lock Loop approach is used to synchronize the Standalone PV system with the grid at a specific phase angle and frequency. According to load variations, the control circuit is designed to supply active and reactive electricity to the load from a standalone PV system and the grid. This study shows a three-phase dual-stage inverter-based grid-connected PV system in a centralized arrangement. The three-phase series resonant converter is chosen for the DC-DC stage because of its advantages. It is, however, insufficient for MPPT because its efficiency is highly dependent on the implemented deadtime and switching frequency. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. Intelligent technologies in the electric power industry.
- Author
-
Muhamediyeva, D. T. and Safarova, L. U.
- Subjects
- *
ELECTRIC utilities , *GEOMETRIC programming , *POWER plants , *PROBLEM solving , *BOILERS , *BOILER efficiency - Abstract
This work is devoted to the development of a method for optimal load distribution between units of thermal stations using geometric programming. Load distribution problems for thermal power plants, including turbines, boilers, units and other components, are complex and relevant in the context of energy systems. The paper discusses optimization features for condensing turbine units, blocks and boilers. The use of geometric programming makes it possible to simplify the conditions for the most favorable distribution, providing effective methods for solving the problem. The developed method not only provides optimal load distribution, but also takes into account various technical characteristics and limitations of plant components. The results of the study represent a significant contribution to the field of optimization of energy systems, and the proposed method can be effectively used in practical problems of controlling thermal power plants to improve their efficiency and reliability. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
36. Exelon Corporation SWOT Analysis.
- Subjects
ELECTRIC utilities ,SWOT analysis - Abstract
A SWOT analysis of Exelon Corporation is presented.
- Published
- 2024
37. BMI Research: Zimbabwe Power Report.
- Subjects
ELECTRIC utilities ,ELECTRIC power production - Abstract
An industry report of Power industry in the Zimbabwe is presented from publisher Fitch Solutions, with topics including market forecast; electricity generation data; and leading companies in the industry including Zimbabwe Power Co.; and the ZESCO.
- Published
- 2024
38. BMI Research: Angola Power Report.
- Subjects
ELECTRIC utilities ,ELECTRIC power production - Abstract
An industry report of Power industry in the Angola is presented from publisher Fitch Solutions, with topics including market forecast; electricity generation; and leading companies in the industry including China Gezhouba Group Co. Ltd.; and the Grupo Engevix.
- Published
- 2024
39. Forecasting for Fast, Effective Storm Response: Avista builds on satellite-driven vegetation management to predict storms
- Author
-
Barrington, Andrew
- Subjects
Electric utilities ,Weather forecasting ,Storms ,Company business management ,Electronics and electrical industries - Abstract
What if there was a way to better understand how storms could impact an electric utility's service territory 72 hours--three days--in advance? Avista asked that question as it was experiencing [...]
- Published
- 2024
40. Layers of Protection: PG&E deploys a remotely operated controlled-burn system, next-gen drones, wireless remote grids and more to enable layers of protection
- Author
-
Doherty, Paul
- Subjects
PG&E Corp. ,Pacific Gas and Electric Co. ,Electric utilities ,Gas utilities ,Wildfires ,Electronics and electrical industries - Abstract
Pacific Gas & Electric Co. (PG&E) is deploying innovative and emerging technologies, including a remotely operated controlled-burn system, next-generation drones and wireless remote grids, building on the proven layers of [...]
- Published
- 2024
41. Planning for the Extreme: Con Edison's resilience plan is meant to prevent and mitigate outages, protect public safety, and reduce customer impacts and inconvenience
- Author
-
Yip, Nelson, Edison, Con, and Bruzgul, Judsen
- Subjects
Consolidated Edison Inc. ,Extreme weather ,Electric utilities ,Power failure ,Power lines ,Winter storms ,Electronics and electrical industries - Abstract
Extreme weather events set some unwanted records in 2023: It was the hottest year on record and brought 20 named storms to the Atlantic Ocean--the most in a year since [...]
- Published
- 2024
42. Collaboration and Commmunity: Idaho Power leverages public-private partnerships to reduce wildfire risk in southern Idaho
- Author
-
Southard, Dani
- Subjects
United States. Forest Service ,Idaho Power Co. ,Electric utilities ,Public-private sector cooperation ,Wildfires ,Electronics and electrical industries - Abstract
Like all utilities, Idaho Power places safety and reliability at the heart of its operations. It never stops working to make the grid safer and more resilient, and to protect [...]
- Published
- 2024
43. Fresh Start
- Author
-
MacMillan, Mike
- Subjects
Duke Energy Corp. ,Nuclear energy ,Natural gas ,Electric utilities ,Coal-fired power plants ,Alternative energy sources ,Environmentalists ,Business ,Business, regional - Abstract
Duke Energy's coal-to-natural gas pleases Person County. Environmentalists say not so fast. The Roxboro coal-fired plant has been a key power generator since 1966. It's slated to close within a [...]
- Published
- 2024
44. NEPRA Faces Criticism as K-Electric Seeks Rs5.50 per Unit FCA Hike.
- Author
-
Kiani, Khaleeq
- Subjects
CHIEF financial officers ,ELECTRIC utilities ,CONSUMER protection ,ENERGY industries ,RUBBER stamps - Abstract
The National Electric Power Regulatory Authority (NEPRA) is facing criticism in Karachi after K-Electric requested a fuel cost adjustment (FCA) hike. K-Electric is seeking an additional FCA of Rs5.45 per unit for May and June, which would have a total financial impact of Rs10.036 billion. Consumers and business representatives are criticizing NEPRA for approving power tariff increases and FCAs demanded by power companies, and they argue that high energy costs are negatively impacting industries and increasing unemployment. Some are calling for K-Electric's generation license to be revoked and for cheaper surplus supply from the National Transmission and Dispatch Company (NTDC) to be redirected to Karachi. Despite NEPRA's defense of its decisions, tensions between power regulators, utilities, and consumers in Karachi are escalating due to rising energy costs. [Extracted from the article]
- Published
- 2024
45. Govt Likely to Adjust Net Metering Buyback Rate to Average Energy Cost.
- Author
-
Ghumman, Mushtaq
- Subjects
ELECTRIC utilities ,ENERGY industries ,INFORMATION technology ,DATA analytics ,ELECTRIC power - Abstract
The government of Pakistan is considering adjusting the buyback rate of net metering to the average energy cost, which would extend the payback period from three to five years. This proposal was discussed in an online seminar organized by the German development agency, GIZ, and attended by key stakeholders in the power sector. The current net metering regime allows excess units to be carried forward for three months and then converted into monetary value, leading some consumers to install more solar capacity than necessary. To address challenges such as high consumer voltage and power quality issues, experts suggested installing transformer monitoring systems and reducing the net metering capacity limit. The use of smart meters and data analytics was also recommended to discourage unauthorized installations and improve network visibility. Additionally, there were discussions about reducing the buyback rates for excess exported units and increasing the payback period to four to five years for a more balanced and sustainable approach. The seminar concluded with a consensus on the need for practical examples of over-voltage and power quality issues, the establishment of a central cell for monitoring net metering progress, and reducing the net-off cycle to one month to encourage self-consumption of solar power. [Extracted from the article]
- Published
- 2024
46. Karachi Endures Severe Heatwave and Prolonged Power Outages.
- Subjects
HEAT waves (Meteorology) ,ELECTRIC utilities ,ELECTRICITY pricing ,PUBLIC utilities ,INTERVENTION (Federal government) - Abstract
Karachi is currently experiencing a severe heatwave, with temperatures reaching 50°C and a lack of sea breezes. This has led to prolonged power outages, lasting 10 to 12 hours daily, despite government directives to reduce load-shedding during the heatwave. Many areas in Karachi are still suffering from power cuts, despite claims from the power utility company that 71% of feeders are exempt. Residents are also facing high electricity bills and seeking medical aid for heat-related issues. Calls for government intervention to reduce electricity prices and end unscheduled load-shedding have increased. [Extracted from the article]
- Published
- 2024
47. Complexity of Power Supply and Delivery.
- Subjects
ELECTRIC utilities ,POWER resources ,INVESTORS ,ENERGY industries ,BUSINESS finance - Abstract
The article discusses the complexity of power supply and delivery in Pakistan, particularly in relation to Independent Power Producers (IPPs). It highlights the misunderstanding and misguided advice surrounding renegotiating Power Purchase Agreements (PPAs) with IPPs. The article emphasizes the need to learn from past mistakes and mitigate the negative impacts of IPPs through supply and demand management. It also explores the differences in investment allocation and preferences in the power sector, and suggests studying how the USA resolved similar challenges as a potential solution. The article concludes with a humorous suggestion and a challenge for the former minister. [Extracted from the article]
- Published
- 2024
48. Design of a Lean Distribution Model in the Electric Power Industry with a World-Class Approach.
- Author
-
Radmaneshi, Roxana, Hadinejad, Farhad, and Farsijani, Hassan
- Subjects
ELECTRIC utilities ,ELECTRIC power distribution ,TECHNOLOGICAL innovations ,CUSTOMER satisfaction - Abstract
Objective: This study aims to design a lean distribution model tailored for the electric power distribution network in Tehran, integrating global best practices and expert insights to address the specific challenges and opportunities within this sector. Methodology: The study employed a mixed-method approach, combining qualitative and quantitative techniques. A comprehensive literature review was conducted to identify key factors influencing lean distribution. Expert interviews with managers and industry specialists in Tehran's electric power distribution sector provided additional insights. The factors were structured and categorized using Interpretive Structural Modeling (ISM) and MicMac analysis to establish their interrelationships and influence. Findings: The study identified 16 critical factors influencing lean distribution, with "World-Class Lean Distribution in the Electric Power Industry" emerging as the most influential. Other key factors included "Optimal Distribution of Reactive Power in Power Systems," "Estimation of Load Uncertainty," "Reduction of Loss Levels," and "Use of Fixed and Switchable Capacitors." The findings highlight the importance of infrastructure, ISO 9000 implementation, technological integration, internal capacity, and resilience. Conclusion: The research provides a comprehensive framework for implementing lean distribution practices in the electric power industry, emphasizing the need for global standards, technological advancements, and resilience. The findings suggest that adopting these practices can lead to improved reliability, reduced operational costs, and enhanced customer satisfaction, contributing to sustainable development and energy security. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
49. Industry star or production elite: evidence from total factor productivity of Chinese electricity sector's green transformation.
- Author
-
Meng, Qiaoyu and Hou, Chenchen
- Subjects
INDUSTRIAL productivity ,ELECTRIC utilities ,ELECTRIC power factor ,CARBON emissions ,EMISSIONS trading - Abstract
China is constantly seeking rapid, high-quality growth in order to meet its carbon peaking and neutrality goals. Approximately 40% of China's carbon emissions come from the electric power industry, which is beset by issues of poor efficiency and excessive emissions. Thus, it is essential to determine if environmental restrictions increase economic benefits total factor productivity while still preserving the environment. We use the Quasi-DID method to examine the impact of carbon emissions trading scheme on firm-level total factor productivity of electric power companies. The findings demonstrate the following: (1) carbon emissions trading scheme considerably impedes total factor productivity development; (2) the primary cause of this detrimental impact is the need for additional improvements in marketization since green innovation is still in its infancy; (3) additional study indicates that law enforcement's heterogeneity is what affects this restriction. Our research may both enhance the Chinese carbon emissions trading scheme's effectiveness assessment framework and point out several potential avenues for high-quality growth. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
50. What does capital consume? Racial capitalism and the social reproduction of surplus people.
- Author
-
Goffe, Rachel and Luke, Nikki
- Subjects
- *
SOCIAL reproduction , *CAPITALISM , *REPRODUCTION , *ELECTRIC utilities , *LAND tenure , *EARLY death - Abstract
This intervention considers uneven development and social reproduction within racial capitalism. Social reproduction refers to the range of practices that form the conditions of possibility for the life of capital, as well as life and death within racial capitalism. This spans a range of institutions and networks within households, communities, states and across national borders as well as the labour practices, relations and organization that reproduce racial capitalism. Here, we examine the extraction of time, taking up theorizations across carceral geographies, postcolonial theory and Caribbean studies to demonstrate how coercive relations of social reproduction contribute to uneven development. In particular, we look at the role of the state in racial capital's capture of reproductive activities across our work on electric utilities in Atlanta, Georgia and extralegal land tenure on Jamaica's north coast. In bringing these distinct sites into conversation, we re-affirm the need to study uneven development by understanding how the circulation and accumulation of capital is imbricated with the production of hierarchies of all kinds of difference. We show how a conjunctural countertopography can reveal how state practices advance accumulation under conditions of widespread surplus lives, as capital wagers on captive life and premature death. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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