A Review on Reactive Power Capability of Distributed Solar PV Inverter in Distribution Systems

Abstract

Due to the rapid increase in energy demand and associated environmental effects, renewable energy especially solar energy is being prioritized and promoted as the best choice for meeting energy demands and mitigating environmental issues. Solar energy is effectively utilized in the distributed generation (DG). The main component of the solar photovoltaic system used for converting produced DC power into AC power is the solar inverter. The solar inverter can supply both active and reactive power. However, conventional solar inverters are configured for producing only active power. Demand for reactive power is served by grid only. Therefore, the solar inverters can be upgraded to utilize their reactive power capability also. Which will decrease the reactive power requirement from the grid, resulting in the mitigation of various power quality issues. Reactive power compensation by a smart solar inverter does not require much additional cost or system resources. This article reviews various reactive power support and control techniques provided by the solar inverter.