摘要
特高压线路加装并联高抗补偿线路电容是限制特高压线路工频过电压的主要措施。并联高抗的补偿方式分单端补偿、两端补偿以及多点补偿,不同线路应选择不同的补偿方式以更有效、更经济地限制工频过电压。本研究在计算分析特高压线路工频过电压的基础上,对三种补偿方式的特点进行了研究,得出了三种补偿方式的适用范围,以及具体线路补偿方式的选择方法。研究表明,从工频过电压限制角度,单端补偿有一定局限性,两端补偿效果较好,多点补偿适用于长距离输电线路。在实际线路的高抗设计中应综合考虑过电压限制效果和经济性。
Using shunt reactor to compensate the line capacitance is the main measure to restrict power frequency over-voltage.Three compensation modes can be selected effectively and economically,including one-dot,two-dot and multi-dot compensation mode.This paper compares the characteristics of the three compensation modes on the basis of detailed calculation,and presents their respective application scope and selection method.Studies show that one-dot compensation mode has certain limitation from the perspective of restricting power frequency over-voltage,that two-dot compensation mode is more effective,and that multi-dot compensation mode is suitable for long lines.In practical design,both the restriction effect of power frequency over-voltage and economy should be considered.
出处
《华东电力》
北大核心
2011年第2期257-261,共5页
East China Electric Power
关键词
特高压
工频过电压
单相接地甩负荷过电压
补偿方式
UHV
power frequency over-voltage
load throw-off overvoltage with one-phase fault
compensation mode
