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《POWER SYSTEM TECHNOLOGY》 1997-07
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A FREQUENCY ADAPTATION OF DIGITAL PROTECTION FOR PUMPED STORAGE UNITS

Tian Lijun; Lu Yuping; Chen Heng(Southeast UniversityNanjing, 210096 China)  
This paper simulates the starting process of apumped-storage generator/motor by numerical method, pre-sents a fequency-tracking algorithm according to the startingand operating characteristics of pumped storage units. Withthis a1gorithm the acquisition of voltage and current phasorsfor generator-trans fomer unit digital relaying is not affectedby the frequfncy deviation. Performance of this frequencytracking algorthm is evaluated by digital simuIation- Thismethod can be used in other generator relaying and control equipment.
【CateGory Index】: TV743
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1 WU Xiu-yun, WANG Nian-shen, ZHENG Da-qiong,WANG Hao-jie, YANG Li-ming, LUO Hong-feng( 1. Branch of Beijing Polytechnic University, Beijing 100044, China;2. Chins Institute of Water Resource and Hydropower Research, Beijing 100038, China );Study on Application of Air Surge Tank[J];Journal of Beijing Polytechnic University;2002-04
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