现代电力2017，Vol.34Issue(3)：76-81,6.
基于相关辨识法的大型光伏电站广域阻尼控制器设计
Design of Wide-area Damping Controller for Large-scale PV Power Plants Based on Correlation Identification Method
摘要
Abstract
As to the potential inter-area low-frequency oscillation problem of power system with grid-connected large-scale photovoltaic (PV) power plants, wide-area damping controller (WADC) for large-scale PV power plants is proposed based on correlation identification method.Firstly, the open loop transfer function of the system is obtained by correlation identification method based on pseudo random signals.Then TLS-ESPRIT(total least squares-estimation of signal parameters via rotational invariance techniques, TLS-ESPRIT) method is applied in calculating dominant mode ratio (DMR) to select the optimal input signal of WADC by combining residue index.Secondly, the parameters of WADC are regulated by using pole placement method.Finally, the electromechanical transient model of two-area system with grid-connected PV power plants is built by DIgSILENT/PowerFactory.The time-domain simulation results show that PV WADC for power system with grid-connected large-scale PV power plants can effectively control inter-area low-frequency oscillation, and improve the small signal stability of power system.关键词
光伏电站/相关辨识法/伪随机信号/主模比指标/广域阻尼控制器Key words
photovoltaic (PV) power plants/correlation identification method/pseudo random signals/dominant mode ratio (DMR)/wide-area damping controller (WADC)分类
信息技术与安全科学引用本文复制引用
葛景,都洪基,马进,赵大伟,钱敏慧,朱凌志..基于相关辨识法的大型光伏电站广域阻尼控制器设计[J].现代电力,2017,34(3):76-81,6.基金项目
国家电网公司科技项目资助(NY71-14-001) （NY71-14-001）
