电力系统及其自动化学报2019，Vol.31Issue(1)：58-64,7.DOI:10.3969/j.issn.1003-8930.2019.01.010
变电站并联电容器组配置及分闸过电压的仿真分析
Configuration of Shunt Capacitor Bank in Substation and Simulation of Opening Overvoltage
摘要
Abstract
A shunt capacitor bank is one important reactive power supply in power grid,which is often used to improve the power factor of power grid,maintain the operating voltage at a higher-quality level,and cut down the active power loss during power transmission,thus guaranteeing a safe and stable operation of power grid. In this paper,the opening overvoltage of a shunt capacitor bank in a 110 kV substation in Tianjin is calculated by utilizing the widely used electro?magnetic transients program/alternative transients program(EMTP/ATP). Under the premise of different opening time of circuit breakers in the shunt capacitor bank,the effect of changing the parameters of only one capacitor bank on the opening overvoltage of this bank is analyzed. Moreover,the reasonable range of the switching capacitance of one single bank in the shunt capacitor bank,which is suitable for Tianjin power grid in practice,is given. The result shows that the energy flowing through the ZnO surge arrester of capacitor bank in every phase will increase with the growth of ca?pacitance in every phase,eventually breaking the surge arrester.关键词
并联电容器组/分闸过电压/EMTP/ATP/金属氧化物避雷器Key words
shunt capacitor bank/opening overvoltage/EMTP/ATP/metal oxide arrester(MOA)分类
信息技术与安全科学引用本文复制引用
王继隆,李盛伟,王楠,高宇..变电站并联电容器组配置及分闸过电压的仿真分析[J].电力系统及其自动化学报,2019,31(1):58-64,7.基金项目
国网江苏省电力公司科技资助项目(5210EC16000Q) （5210EC16000Q）
国家自然科学基金资助项目(51807091) （51807091）
江苏省自然科学基金资助项目(BK20180478) （BK20180478）
中央高校基本科研业务费专项资金资助项目(30917011330) （30917011330）
