摘要
研究了在500kV超高压变电站的电容器组补偿系统中,通过采用串联电阻开关来限制并联电容器组投切过程中的过电压和涌流问题。通过仿真分析了不同串联电阻阻值的影响,并提出推荐阻值,对比了使用普通断路器、相控断路器和串联电阻开关对过电压与过电流的限制效果。结果表明,串联电阻开关能有效降低重燃概率,同时可降低重燃后的过电压水平。从经济和技术角度分析,认为串联电阻开关具有较低的断路器要求、更好的经济性和实用性。
In this paper,the issue of limiting the over-voltage and inrush current by way of series resistance switch during the switching of shunt capacitor bank in the capacitor bank compensation system of a 500kV EHV substation is studied.The influence of different series resistance values is analyzed through simulation,the recommended resistance values are proposed,and the limiting effects of using ordinary circuit breaker,phase-controlled circuit breaker and series resistance switch on over-voltage and over-current are compared.The results show that the series resistance switch can effectively reduce the probability of reignition and can,at the same time,reduce the over-voltage level after reignition.It is thought from the the economic and technical perspective that the series resistance switch has lower circuit breaker specifications,better economic performance and practicality.
作者
王雪松
岳永刚
吕鑫
张庆如
王超
张立国
杨兰均
WANG Xuesong;YUE Yonggang;LYU Xin;ZHANG Qingru;WANG Chao;ZHANG Liguo;YANG Lanjun(Inner Mongolia EHV Power Supply Company,Hohhot 010080,China;School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《电力电容器与无功补偿》
2024年第4期124-132,共9页
Power Capacitor & Reactive Power Compensation
基金
内蒙古超高压供电公司科技项目(LX99222990)。
关键词
并联电容器组
ATP-EMTP
重燃过电压
相控断路器
串联电阻开关
shunt capacitor bank
ATP-EMTP
re-ignition over-voltage
phase-controlled circuit breaker
series resistance switch
