|
|
|
| Fault analysis of 500kV HGIS disconnecting switch's insulating tension pole |
| YU Xiaoxiang |
| State Grid Fujian Electric Power Co., Ltd, Maintenance Branch, Fuzhou 350001 |
|
|
|
|
Abstract Through the analysis of disintegration a tripping fault of the 500kV hybrid gas insulated switchgear, confirmed the cause of fault is due to internal defects of disconnecting switch's insulating tension pole. The internal defects gradually deteriorated in the operating process, and the flashover happened. Then in process of reclosing, thebreakdown products and shielded cap of moving contact dropped on the level basin insulation, it caused the flashover of insulator, later the isolator broke down. In all these cases, we put forward recommendations to improve device reliability.
|
|
Received: 20 July 2020
|
|
|
|
[1] 张国光. 电器设备带电检测技术及故障分析[M]. 北京: 中国电力出版社, 2015.
[2] 彭江. 电网设备带电检测技术[M]. 北京: 中国电力出版社, 2014.
[3] 刘英. SF6开关产品绝缘拉杆的设计[J]. 电气制造, 2004(11): 43-44.
[4] 张红军, 王文文, 张强. 断路器绝缘拉杆的动力学仿真分析与试验研究[J]. 高压电器, 2012, 48(10): 83-87.
[5] 宋杲, 李炜, 宋竹生, 等. 国网公司系统组合电器运行情况分析[J]. 高压电器, 2009, 45(6): 78-82.
[6] 刘芹, 程建伟, 纪哲夫. 550kV GIS隔离开关绝缘拉杆故障原因分析与应对措施[J]. 广西电力, 2019, 42(3): 45-50, 61.
[7] 邓建青, 刘宝林, 孙会峰. 一起SF6断路器用绝缘拉杆的放电故障浅析[J]. 电瓷避雷器, 2020(3): 243-248.
[8] 卫昕卓, 邓宏伟, 陈燕南, 等. GIS隔离开关用绝缘拉杆含异物及缺陷时的电场分析[J]. 高压电器, 2016, 52(4): 103-110, 116.
[9] 李璐, 牛田野, 姜国庆, 等. 一起500kV SF6断路器爆炸事故的分析[J]. 中国电机工程学报, 2016(36): 246-250.
[10] 何善庆. 550kV GIS盆式绝缘子闪络事故的分析[J]. 高压电器, 2003, 39(3): 79-80.
[11] 任志刚, 王雅群, 徐兴全, 等. 基于固态残留物X射线能谱的GIS设备故障分析[J]. 电气应用, 2015(34): 639-641. |
|
|
|
2021, Vol. 22 
