Optimal Coordinated Control of Full-controlled Excitation System with Energy Storage System

The full-controlled excitation system is a novel excitation system which can regulate the amount of reactive power injected to the power system. In this paper, the full-controlled excitation system with energy storage system (ESS) is proposed. By the combination, the excitation system can provide controllable active and reactive power to the terminal of the generator. The typical structure of this excitation system is proposed and the state-space equation is derived. Then the linear optimal control is used to coordinate three control variables to design the controller. The simulations based on the single machine infinite-bus (SIMB) system show that the full-controlled excitation system with ESS performs better on the suppression of power system oscillation than excitation system without the control of power exchange with the terminal of the generator. It is a prospective substitute to the conventional excitation system and of great value to study.