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

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United States of America Patent

PATENT NO 9906177
SERIAL NO

15097691

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Abstract

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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 ω (which is treated by DC blocking element and corrected by parallel proportional differential PD) and active power signal Pe (which is treated by DC blocking element and gained by gain factor Ks3) to get equivalent synthetic mechanical power of power system stabilizer. The actual active power signal gained by gain factor KS1 can 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.

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Patent Owner(s)

Patent OwnerAddress
STATE GRID CORPORATION OF CHINANO 86 WEST CHANG'AN STREET XICHENG DISTRICT BEIJING 100031
NR ELECTRIC CO LTDNO 69 SUYUAN AVENUE JIANGNING NANJING JIANGSU 211100
STATE GRID ZHEJIANG ELECTRIC POWER RESEARCH INSTITUTENO 1 HUADIAN LANE NO 8 ZHAOHUI XIACHENG DISTRICT HANGZHOU ZHEJIANG 310014

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Han, Bing Zhejiang, CN 155 4810
Huang, Xiaoming Zhejiang, CN 29 73
Lou, Boliang Zhejiang, CN 16 100
Lu, Cencen Zhejiang, CN 1 3
Lu, Chengyu Zhejiang, CN 3 3
Lu, Haiqing Zhejiang, CN 2 13
Lu, Jiahua Zhejiang, CN 2 3
Shen, Yijun Zhejiang, CN 13 5
Wu, Kuayu Zhejiang, CN 2 3
Wu, Long Zhejiang, CN 65 441
Xiong, Hongtao Zhejiang, CN 2 3

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