Simulation and Field Study of Static Var Compensator in High Wind Power Penetration Area using LFA –Western Rajasthan

Abstract: Wind generation is currently the leading form of new renewable generation in the world. The amount of electricity being generated by wind turbines is increasing continuously, day by day and wind power penetration in a power system is spreading in an uncontrollable way. The power generation through wind energy totally dependent on the flow of the wind due to uncertainty and randomness of wind flow, the generation of power is quite fluctuating in nature and large-scale wind farms may cause significant impact to the stability and power system safety. Wind power has significant variation over shorter time periods. With large variations in wind generation, reactive power flows on transmission lines, transmission loss, voltage and power factor are major attributes which having a major impact on power system performance. The shunt connected FACT devices such as a static var compensator (SVC), which is dynamic reactive power compensator whose reactive power output depends upon the system voltage, is adopted for control of bus voltage magnitude and to bring the system near to unity power factor, thus for mitigation of reactive power. This paper presents the finalization of SVC rating in the power system having high wind power generation, the SVC and system performance with the increase of wind power penetration and static /dynamic var mitigation with the change of the location of SVC too far off the main wind bus. For analysis Rajasthan Grid (India), comprising of different voltage level with high wind power penetration in the Western part selected. All analysis is anchored with load flow analysis, by using Mi-Power system analysis software. The method used is quite effective to give the need of reactive power mitigation device applicability, power system strengthening requirement in view of high wind power penetration under actual field conditions.

Keywords: Static Var Compensator; Load Flow Analysis; Wind Power; Voltage Stability, Dynamic Stability, Wind Power Penetration.