一起110kV GIS母线PT二次电压异常分析与处理
Analysis and Handling of a Case of Abnormal Secondary Voltage of 110 kV GIS Bus PT
郁景礼 1梁冠峰 1张莉珠 1何健明1
作者信息
- 1. 广东电网有限责任公司佛山供电局,广东 佛山 528000
- 折叠
摘要
变电运维人员发现电压互感器二次电压异常,及时排查并确定故障范围,执行倒闸操作方案将故障隔离并恢复完好设备运行.试验发现故障设备气室SF6 气体超标,解体检查发现L2 导电杆与线圈连接头烧损.为此,分析了导致异常的原因,提出了注意事项和防范措施,为避免其他变电站发生类似电压异常提供借鉴.
Abstract
The operation and maintenance personnel in an actual substation discovered abnormal secondary voltage of PT,promptly investigated and determined the fault range,implemented a reverse switch operation to isolate the fault and re-store operation of the intact equipment.The test showed a over-limit SF6 gas content in the gas chamber of the faulty e-quipment,and the disassembly inspection found that the L2 conductor rod and coil connection head were burned.The rea-sons for the anomaly have then been analyzed,and precautions and preventive measures have been proposed,which may contain useful information for avoiding similar faults.
关键词
电压互感器/二次电压异常/倒闸操作/接头烧损/预控措施Key words
potential transformer/abnormal secondary voltage/switching operation/joint burning/precontrol measure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据