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FACTS tools in modern power systems provide a vital solution to the problems of voltage deviation and fault ride-through (FRT) capability in electrical power systems especially during the integration of wind power. Many distinct journals highlight that the wind-driven squirrel cage generator (SCIG) still accounts for around 15% of operating wind generators so far. To enhance voltage stability and FRT capacity, this paper recommends a cost-effective static VAR compensator (SVC) which has a size rating of six MVAR, and this improves the efficiency of the electrical power system. Different events are considered in this study such as high turbulent wind speed, low turbulent wind speed, unsymmetrical faults, and symmetrical faults to validate the suggested option. Moreover, the suggested solution is compared with the static synchronous compensator (STATCOM) and a fixed capacitor to ensure that during the studied wind speed profiles and faults, voltage stability, reactive power consumption, and FRT capability are realized. An overall comparison among them is performed under all studied scenarios to summarize their benefits and impacts. The simulated results show the effectiveness and superiority of SVC in improving the operation of an integrated wind system based on a grid-linked SCIG and the performance of the power system. The modeling of SCIG, SVC, and STATCOM is designed by MATLAB/Simulink toolbox. [ABSTRACT FROM AUTHOR]

Nowadays, electric vehicles have a considerable effect on the electrical system, thus their analysis based on different electric vehicle integration approaches is necessary. This paper exhibits four case studies for electric vehicles with the grid to exhibit their influence on the electrical network and reduce power loss and voltage fluctuation. Furthermore, the growing load demand matters, management and support of active and reactive power, and load balancing are discussed. Fuzzy logic control is applied to estimate the process of the charging/discharging. Moreover, a controlled superconducting magnetic energy storage system is utilized for the power grid which integrates with electric vehicles to the level of load demand during on-peak load and fast charging. A coordinated control between electric vehicles and superconducting magnetic energy storage unit is applied to level the power required by electric vehicles and improve the power system performance. Electricity price is a common coordination signal for both electric vehicles and superconducting magnetic energy storage, which depends on fuzzy control. The simulation results implemented by the Matlab Simulink tool show the effectiveness of the coordination control technique and superconducting magnetic energy storage in minimizing power loss and voltage fluctuation. Besides that, it helps to alleviate the active power and reduce the reactive power provided by the grid. [ABSTRACT FROM AUTHOR]

The intermittent behavior of wind power generation results in a fast variation of both frequency and voltage magnitudes of isolated microgrids with high wind power penetration. In this paper, a hybrid energy microgrid with wind energy conversion system (WECS) and diesel synchronous generators are analyzed during wind gust conditions. Superconducting magnetic energy storage (SMES) is connected at the same node of the WECS to mitigate the intermittent wind power generation. A developed fuzzy logic controller has been applied to achieve active power sharing. The damping of voltage fluctuation depends on SMES reactive power, which is controlled by a voltage source converter. The studied microgrid comprises 33 nodes, two diesel SGs, and two WECSs of squirrel cage induction generator type at 30% penetration level. The results demonstrate the effectiveness of the proposed control strategy to mitigate the frequency fluctuations during the wind speed gusts by smoothing power output from WECSs/SMES system. Moreover, voltage control is achieved by injecting reactive power from the SMES system. All simulations are performed by MATLAB/Simulink package. [ABSTRACT FROM AUTHOR]