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6 results on '"Dusonchet, Luigi"'

1. Voltage regulation and power losses minimization in automated distribution networks by an evolutionary multiobjective approach

Author

Augugliaro, Antonino, Dusonchet, Luigi, Favuzza, Salvatore, and Sanseverino, Eleonora Riva

Subjects
Electric power distribution -- Research, Business, Electronics, Electronics and electrical industries
Abstract

In this paper, the problem of voltage regulation and power losses minimization for automated distribution systems is dealt with. The classical formulation of the problem of optimal control of shunt capacitor banks and Under Load Tap Changers located at HV/MV substations has been coupled with the optimal control of tie-switches and capacitor banks on the feeders of a large radially operated meshed distribution system with the aim of attaining minimum power losses and the flattening of the voltage profile. The considered formulation requires the optimization of two different objectives; therefore the use of adequate multi-objective heuristic optimization methods is needed. The heuristic strategy used for the optimization is based on fuzzy sets theory. After a brief description of the general problem of optimal control of voltage and power losses in automated distribution networks, the most recent papers on the topic are reported and commented. Then the problem formulation and the solution algorithm are described in detail. Finally, numerical results on a large distribution system demonstrate that the proposed formulation and approach are effective and feasible for finding an optimal generalized dispatching schedule. Index Terms--Optimal control, optimization methods, power distribution, voltage control.

Published
2004

2. Minimum losses reconfiguration of MV distribution networks through local control of tie-switches

Author

Augugliaro, Antonino, Dusonchet, Luigi, Ippolito, Mariano Giuseppe, and Sanseverino, Eleonora Riva

Subjects
Electric power transmission -- Research, Business, Computers, Electronics, Electronics and electrical industries
Abstract

This paper deals with the problem of optimal reconfiguration of radial distribution networks for minimum loss operation. The proposed control strategy of the open-closed status of the tie-switches is distributed, since every MV/LV node is provided with local controllers having some measured entities as input. It also does not prevent the system from the future implementation of centralized control; instead it may represent the first step toward a complete automation of the distribution system. The proposed strategy is indeed organized in hierarchic levels, the highest of which may be in the future a central control. After introducing the general problem of networks reconfiguration, a review of the state of art on the subject is reported, even though the solution methodologies are usually related to the centralized formulation of the reconfiguration problem. Then, the proposed local control strategy is outlined and a detailed description of its different parts is reported, with special attention to all of the measures for a better performance of the system. Finally, results of a number of simulation runs are reported in order to test the behavior of the proposed local control system in different possible operating conditions. Index Terms--Reconfiguration, optimal control, distributed control, power distribution control.

Published
2003

5. On the Interconnections of HV–MV Stations to Global Grounding Systems

Author

Massimo Mitolo, Eleonora Riva Sanseverino, Maria Luisa Di Silvestre, Gaetano Zizzo, Salvatore Favuzza, Stefano Mangione, L. Mineo, Luigi Dusonchet, Di Silvestre, Maria Luisa, Dusonchet, Luigi, Favuzza, Salvatore, Mangione, Stefano, Mineo, Liliana, Mitolo, Massimo, Sanseverino, Eleonora Riva, and Zizzo, Gaetano

Subjects
Computer science, 020209 energy, 02 engineering and technology, ground fault, interconnected grounding systems, Industrial and Manufacturing Engineering, Transfer (computing), 0202 electrical engineering, electronic engineering, information engineering, Power grid, Electrical and Electronic Engineering, HV/MV station, Electrical safety, Interconnection, global grounding system (GGS), business.industry, Ground, Electrical engineering, 021001 nanoscience & nanotechnology, Grid, Earthing system, Line (electrical engineering), Settore ING-IND/33 - Sistemi Elettrici Per L'Energia, Control and Systems Engineering, 0210 nano-technology, business, Voltage
Abstract

The interconnection of grounding systems of HV-MV stations via the armors of medium voltage cables, is herein analyzed to verify the effects on touch voltages in ground-fault conditions. The major contributions of this paper are two: the analysis of the impact of an HV ground-fault on a global grounding system (GGS), and the analysis of the parameters that may affect safety due to the interconnection between HV-MV stations and the GGS. The authors have analyzed cases when the connection of an HV-MV station to a GGS improves safety, and then may introduce hazards under ground-fault conditions. Two main issues are herein discussed: 1) the transfer of dangerous voltages to substations, due to ground-faults occurring at the HV-MV station; and 2) the reduction in the magnitude of the ground potential rise caused by ground-fault conditions at substations, due to the connection of their ground grids to the HV-MV station's grounding system. This paper, by examining various grid configurations, demonstrates that in some instances the inclusion of HV-MV stations in the GGS may reduce the level of protection against touch voltages, and that this depends on the following elements: the number of MV lines fed by the faulted station, the number of MV-LV substations per line, the value of the ground resistance of the substations, and the distance between the substations. This paper has practical relevance for both utilities distribution systems and industrial facilities supplied by the MV power grid.

Published
2019

6. Stationary battery systems in the main world markets: Part 2: Main trends and prospects

Author

Enrico Telaretti, Luigi Dusonchet, Telaretti, Enrico, and Dusonchet, Luigi

Subjects
Battery (electricity), Engineering, Environmental Engineering, Relation (database), Operations research, Application, business.industry, 020209 energy, Energy Engineering and Power Technology, Battery energy storage, Subsidy, 02 engineering and technology, Environmental economics, Industrial and Manufacturing Engineering, Energy storage, Database, Settore ING-IND/33 - Sistemi Elettrici Per L'Energia, Electric power system, Work (electrical), Regulatory framework, 0202 electrical engineering, electronic engineering, information engineering, Use case, Electricity, Electrical and Electronic Engineering, business
Abstract

Stationary battery systems are gaining a lot of interest in recent years, mainly because of their ability to balance generation and demand of electricity over time. The intermittent nature of renewable generation connected to the power grid is causing major stability and reliability issues in the power system, that can be solved also using stationary storage systems, able to provide the ancillary services necessary to the proper operation of the power network. Despite the considerable advantages offered by these technologies, the electrochemical storage industry is still in the nascent state and it is important to identify the main trends and prospects in relation to future technical developments, regulatory landscape and future commercial models. This paper is the second of a two-part series, aiming to provide an overview of stationary battery systems in the major world markets, identifying the applications most widely used in each storage market. In this second paper, a country overview is provided for each of the selected markets, in terms of policy regulations, subsidy programs and storage installations. The main trends are also identified, with reference to the viable use cases currently spread in the main world markets. This has been done analyzing the U.S. Department of Energy (DOE) storage database, containing details about electrochemical projects installed in each country. The analysis carried out in this work could help stakeholders to assess the impact of energy storage policies in different countries, identifying the future trends and the most promising markets around the world.

Published
2017

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