The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2018
Filed:
Apr. 13, 2016
State Grid Zhejiang Electric Power Research Institute, Hangzhou, Zhejiang, CN;
State Grid Corporation of China, Beijing, CN;
Nr Electric Co., Ltd, Nanjing, Jiangsu, CN;
Kuayu Wu, Zhejiang, CN;
Cencen Lu, Zhejiang, CN;
Long Wu, Zhejiang, CN;
Xiaoming Huang, Zhejiang, CN;
Chengyu Lu, Zhejiang, CN;
Boliang Lou, Zhejiang, CN;
Bing Han, Zhejiang, CN;
Jiahua Lu, Zhejiang, CN;
Hongtao Xiong, Zhejiang, CN;
Yijun Shen, Zhejiang, CN;
Haiqing Lu, Zhejiang, CN;
STATE GRID ZHEJIANG ELECTRIC POWER RESEARCH INSTITUTE, Hangzhou, Zhejiang, CN;
STATE GRID CORPORATION OF CHINA, Beijing, CN;
NR ELECTRIC CO., LTD, Nanjing, Jiangsu, CN;
Abstract
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 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.