电力系统及其自动化学报2016，Vol.28Issue(8)：32-37,6.DOI:10.3969/j.issn.1003-8930.2016.08.006
带并联电抗器的超高压输电线路单相故障识别
Identification of Single-phase Fault for UHV Transmission Lines with Shunt Reactor
摘要
Abstract
Alongside the stretching of secondary arc,the fault phase voltage amplitude increases gradually in the pres-ence of transient faults occuring on the ultra high voltage(UHV)transmission lines. However,in the case of permanent faults,the fault phase voltage amplitude decrease and stays at a stable value finally after the circuit breaker trips. To an-alyze the arc characteristics in the case of transient fault,the models of primary and secondary arc are set up using ATP/EMTP. According to the variation of fault phase voltage,the energy value of difference of fault phase voltage envelope in fixed time window is calculated. The energy value of permanent faults is significantly different from that of transient faults,so the mean of the ratio of the energy value in continuous fixed time window to that in the first time window is tak-en as the criteria to identify the faults. A large number of simulations verify the reliability and accuracy of the proposed criteria,which is applicable to UHV transmission lines with shunt reactor.关键词
超高压输电线路/电弧特性/单相接地故障/故障识别/自适应重合闸Key words
extra high voltage(UHV)transmission line/arc characteristics/single-phase ground fault/identification of fault/adaptive auto-reclosing分类
信息技术与安全科学引用本文复制引用
梁林,江亚群,黄纯..带并联电抗器的超高压输电线路单相故障识别[J].电力系统及其自动化学报,2016,28(8):32-37,6.基金项目
国家电网公司科技资助项目(5216A313500N) （5216A313500N）
