中国电机工程学报2016，Vol.36Issue(17)：4753-4761,9.DOI:10.13334/j.0258-8013.pcsee.151538
中性点直接接地系统的相控重合闸研究
Research on Controlled Reclosing for Solidly Earthed Neutral Systems
摘要
Abstract
Reclosing is an effective method to distinguish instantaneous faults from permanent faults, but there will be an enormous shock for power systems when reclosing in a permanent fault. To reduce the reclosing current peak value and to decrease the current duration time for solidly earthed neutral systems, the relationship between the reclosing current and the voltage phase angle was analyzed, and then a new controlled reclosing strategy was proposed. Three phases were reclosed in turn in a specific line-to-earth voltage phase angle, and the periodic component amplitude of the reclosing current was calculated by a fast identify algorithm for current parameters and compared with a setting value to find the earth fault. Then the pair combinations in three phases were reclosed synchronously in turn in a specific line-to-line voltage phase angle to find the phase-to-phase fault. A new fast recloser using triggered vacuum switch was proposed to implement the proposed controlled reclosing strategy. The simulation results show that the proposed controlled reclosing strategy can reduce the current peak value and duration time and can determine the fault type.关键词
相控重合闸/中性点直接接地/真空触发开关/短路/故障识别Key words
controlled reclosing/solidly earthed neutral system/triggered vacuum switch/short circuit/fault identification分类
信息技术与安全科学引用本文复制引用
黄智慧,邹积岩,邹啟涛,张冬波..中性点直接接地系统的相控重合闸研究[J].中国电机工程学报,2016,36(17):4753-4761,9.基金项目
国家自然科学基金(51337001)；辽宁省博士启动基金(201501177)；中央高校基本科研业务费专项资金(DUT15RC(4)02)。The National Natural Science Foundation of China (51337001) （51337001）
The Liaoning Province Doctor Startup Fund (201501177) （201501177）
The Fundamental Research Funds for the Central Universities (DUT15RC(4)02) （DUT15RC(4）
