An event-triggered distributed coordinated voltage control strategy for large grid-tied PV system with battery energy storage

In this paper, the feeder voltage regulation problem of low-voltage distribution network due to high penetration of solar PVs has been addressed. This paper proposes and evaluates the performance of an event-triggered distributed voltage control strategy to regulate the bus voltages within allowable limit in a domestic low-voltage redial feeder. A leader-following distributed control strategy has been proposed to control the bus voltages through the feeder, which is robust to any bus voltage order. This leader-following distributed control requires communicating only with immediate adjacent buses to implement the distributed voltage control. An event-triggered communication scheme has been introduced for the data transmission between adjacent battery energy storage systems (BESSs) to reduce the amount of communication. The performance of the proposed controller has been evaluated in a realistic radial distribution feeder in MATLAB/ Simulink environment.