Nonlinear robust passive control for power system stability enhancement with wind power integration

被引：0

作者：

Sun, Liming ^{[1
]}

Yang, Bo ^{[2
]}

机构：

[1] Guangzhou Shuimutech Co., Ltd., Guangzhou,510898, China

[2] Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming,650500, China

来源：

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2020年 / 48卷 / 13期

关键词：

Wind power;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Large-scale integration of wind power brings great challenges for power system stability. Because of the randomness of wind speed and generator parameter uncertainties, it is difficult for conventional Proportional- Integral-Differential (PID) control to achieve a satisfactory control performance for a Doubly-Fed Induction Generator (DFIG). In this paper, a novel Robust Passive Control (RPC) is proposed to improve the stability of a power system. First, the generator nonlinearities, parameter uncertainties, unmodelled dynamics and wind speed randomness are aggregated into a perturbation. Then, fast perturbation estimation is achieved by a nonlinear Extended State Observer (ESO) in real-time. Online complete compensation of perturbation is realized by RPC. Subsequently, considerable system damping can be injected to improve the transient responses of the DFIG under various operating conditions. Finally, four cases, such as step change of wind speed, voltage drop at power grid, inter-area type disturbance and generator parameter uncertainties are simulated and studied. Simulation results verify the effectiveness and robustness of RPC under various operating conditions. © 2020, Power System Protection and Control Press. All right reserved.

引用

页码：164 / 172