Simultaneous active and reactive power control of ESTATCOM for improving mosul city ring system

Static synchronous compensator (STATCOM) is an application that utilizes a voltage source converter (VSC) to provide instantaneous reactive power support to the connected power system. Conventionally, STATCOM is employed for reactive power support only. However, with the integration of energy storage (ES) into a STATCOM, it can provide active power support in addition to the reactive power support. The control method of a STATCOM with an energy storage device (BESS) is discussed in this paper. To determine the switching level control, SPWM (Sinusoidal Pulse Width Modulation) methods is used. This paper will introduce ESTATCOM for the improvement of stability and transmission capability. This work suggests a simple and easy to implement PI controller to control the operation of ESTATCOM placed at the weak point of Mosul city 132 kV ring system. The whole system including the ESTATCOM and its controller has been simulate after some kind of disturbance and the results show improvements in the dynamic active and reactive power capabilities of the system.