文章摘要
双回线GIL感应电流快速释放装置控制策略研究
Research on control strategy of inductive current rapid release device for gil with double-circuit lines
投稿时间:2020-03-04  修订日期:2020-04-02
DOI:
中文关键词: GIL  感应电流  释放装置  合闸控制  失灵
英文关键词: GIL  induced current  release device  closing control  closing failure
基金项目:
作者单位E-mail
王玉龙 南京南瑞继保电气有限公司 875765209@qq.com 
徐渊 国网江西省电力有限公司调控中心  
赵青春 南京南瑞继保电气有限公司  
谈 浩 南京南瑞继保电气有限公司  
徐海洋 南京南瑞继保电气有限公司  
张宇驰 南京南瑞继保电气有限公司  
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中文摘要:
      分析了双回线GIL管廊段内部发生单相故障时产生感应电流的机制和危害,提出了通过判别GIL管廊段小差的动作行为、线路两侧运行状态和释放装置位置实现GIL管廊段内部故障断路器切除后感应电流快速释放装置自动合闸的控制策略,避免了人工操作。针对释放装置合闸不成功情况,提出了合闸失灵告警策略和联跳正常运行线的合闸失灵跳闸策略,尽可能地降低感应电流导致GIL管廊击穿的风险,提升现场GIL管廊运维检修效率。
英文摘要:
      The mechanism and hazard of induced current generated in single-phase faults inside gas insulated transmission lines (GIL) with double-circuit lines are analyzed. The automatic control closing strategy of GIL induced current quick release device is proposed. The method realizes the automatic closing of the induced current quick release device after the circuit breaker cuts off the internal fault of the GIL pipe gallery by discriminating the operation of the line differential protection at the GIL, the operating state of the line and the GIL and the release device position, thereby avoiding manual operation. Aiming at the unsuccessful closing of the release device, the closing failure warning strategy and the closing failure inter-tripping strategy of the healthy line are proposed to reduce risks of GIL breakdown caused by the induced current, and improve the efficiency of the on-site GIL operation and maintenance.
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