State Grid Corporation of China

Nr Electric Co., Ltd

State Grid Zhejiang Electric Power Research Institute

Jiahua Lu

Chengyu Lu

Bing Han

Yijun Shen

Long Wu

Xiaoming Huang

Hongtao Xiong

Kuayu Wu

Boliang Lou

Cencen Lu

Haiqing Lu

A low-frequency band suppression enhanced anti-reversal power system stabilizer is presented by the invention. Currently the widely used PSS2B power system stabilizer needs lead elements above Order 2 to meet the phase compensation requirement of DC blocking signal of active power, thus quickly increasing high-frequency band gain, restricting allowable total setting gain of PSS, limiting low-band gain and reducing low-frequency band suppression ability of power system stabilizer. The invention will add generator speed signal &#x3c9; (which is treated by DC blocking element and corrected by parallel proportional differential PD) and active power signal P(which is treated by DC blocking element and gained by gain factor K) to get equivalent synthetic mechanical power of power system stabilizer. The actual active power signal gained by gain factor Kcan meet the requirement of phase compensation through Order 1 lead and lag elements, thus increasing allowable total setting gain of PSS and improving the ability of low-frequency band oscillation suppression.

Low-frequency band suppression enhanced anti-reversal power system stabilizer

Growing community of inventors

Zhejiang, China

Jiahua Lu