高压选相断路器T100a试验电流和瞬态恢复电压的计算  

Calculation of Short-circuit Current and Transient Recovery Voltage for Circuit-breakers Intended for Controlled Switching During T100a Test

作　　者：赵庆斌 黄实 阎对丰 王培人 ZHAO Qingbin;HUANG Shi;YAN Duifeng;WANG Peiren(Xi’an High Voltage Apparatus Research Institute Co.,Ltd.,Xi’an 710077,China)

机构地区：[1]西安高压电器研究院股份有限公司,西安710077

出　　处：《高压电器》2024年第3期80-86,共7页High Voltage Apparatus

摘　　要：相对于常规高压断路器,选相断路器的T100a试验的大半波电流非对称度增大,导致IEC 62271-101:2021附录A、E提供的电流和瞬态恢复电压(TRV)参数不再适用。为了快速精确地计算这些参数,文中提出了以短路电流对称分量为基础计算电流参数,通过时域分析获得TRV修正系数的方法,公式简单、灵活性好,适用范围广。其计算结果与传统公式计算值保持一致,并被IEC WG67认可,包含在IEC TS 62271-319(已通过DTS投票)附录N中。Compared to common high voltage circuit breaker,the increase of asymmetry degree of major loop cur-rent for T100a test of circuit-breaker intended for controlled switching leads to the parameters of current and tran-sient recovery voltage(TRV)provided in IEC 62271-101:2021 appendix A and E not to be applicable any longer.In order to calculate these parameters quickly and accurately,it is proposed in this paper such method that takes the short circuit current symmetrical component as the foundation to calculate current parameters and obtain the TRV correction coefficient through the time-domain analysis,which is of simpleness,high efficiency,flexibility and wide application range.Its calculation result and the calcualtion value by the traditional formula are in agreement,and are also recognized by IEC WG67 as well as included in appendix N of IEC TS 62271-319(DTS).

关 键 词：非对称短路 T100a 交流分量 瞬态恢复电压 选相断路器 

分 类 号：TM561[电气工程—电器]