Coordinated Design of Controller Parameters and Locating Optimization of Controller of Wind-Thermal-Bundled System

The wind-thermal-bundled(WTB) transmission has become an important way of wind power generation delivery. This paper proposes a coordinated design method for power system stabilizer(PSS) and unified power flow controller with power oscillation damping(UPFC-POD) controller to enhance the damping of low-frequency oscillation(LFO) in WTB system. The installation location of UPFC affects the power flow distribution of the system and the active network losses of the system. If installed in an inappropriate location, it will result in large active network losses and high system operating costs. This paper adopts the multi-objective salp swarm algorithm(MSSA) to transform controller coordination optimization and UPFC location optimization into multi-objective optimization problem, in order to enhance the stability and operational economy of the WTB system. The proposed method is evaluated on an IEEE 4-machine 2-area system. The analysis of the results shows that the optimized controller has good ability to damp LFO and reduce network losses in WTB system.