STATCOM Controller Design Based on MLP for Power Flow Control

Abstract

The static synchronous compensator (STATCOM) is one of the developed converter-based flexible AC transmission systems (FACTS) controllers, recently. The STATCOM is shunts with power system and can absorb/deliver reactive power from/to power systems. In this paper, to power flow control in power system by STATCOM, a controller based on neural networks (NNs) have been designed; i.e. multilayer perceptron (MLP). The designed controller has been compared with two conventional controllers; i.e. PI and PID controllers. Influence of each controller on injected active power, injected reactive power and injected current by STATCOM have been analyzed. Three control parameters have used as decision criteria; i.e. peak time, fall time, peak value, fall value and site time. Simulations are performed in MATLAB/SIMULINK environment. compared with PID controller. In (6), STATCOM damping controller has been designed using the phase compensation technique to eliminate its negative influence to improvement of power system oscillations. Authors of reference (7) proposed a STATCOM controller with a fixed modulation index during the transient period and presented harmonic analysis of STATCOM based on Bessel functions. The proposed controller by the pole assignment method was used to regulate AC system bus voltage. The step load change was used to illustrate proposed controller. Wang, in (8), has reported negative interactions between STATCOM AC and DC control and then has proposed multiple control functions of the STATCOM. The designed single multivariable PI controller has used as a MIMO control system.