|
|
|
| Development of equipotential insulation ladder for 500kV compact double circuit transmission line live working |
| WANG Puzhai1, JIANG Lei2, YI Nanjian2, CHEN Weilin1, GUO Hao3,4,5 |
1. State Grid Hu’nan Electric Power Construction Co., Ltd, Changsha 410100;
2. State Grid Hu’nan Electric Power Co., Ltd, Changsha 410100;
3. State Grid Hu’nan Transmission & Maintenance Company, Hengyang, Hu’nan 421000;
4. Intelligent Live Working Technology and Equipment Key Laboratory of Hu’nan Province (2016TP1025), Changsha 410100;
5. Live Inspection and Intelligent Operation Technolgoy State Grid orporation Laboratory, Changsha 410100 |
|
|
|
|
Abstract The 500kV compact double circuit transmission line has a limited safety distance during live working, and the operation is difficult. For this purpose, a 180° rotating telescopic insulation ladder is designed. The tool uses a safety rope to increase the stability of the ladder, thereby improving the safety of the operation. Its scalability increases the convenience of carrying, and the extension of the ladder is controlled by the traction rope. According to theoretical and experimental analysis, the insulation strength and material strength of the developed telescopic insulation ladder meet the use requirements. Compared with the insulated ladder, the installation is more convenient and the operation is simpler. It can provide better live working conditions for 500kV compact double circuit transmission line.
|
|
Received: 05 December 2020
|
|
|
|
| Cite this article: |
|
WANG Puzhai,JIANG Lei,YI Nanjian等. Development of equipotential insulation ladder for 500kV compact double circuit transmission line live working[J]. Electrical Engineering, 2021, 22(7): 60-64.
|
|
|
|
| URL: |
|
http://dqjs.cesmedia.cn/EN/Y2021/V22/I7/60
|
[1] 谷琛, 李鹏, 何慧雯, 等. ±1100kV以上电压等级直流输电技术研究[J]. 中国电机工程学报, 2020, 40(20): 6745-6753.
[2] 李明节. 大规模特高压交直流混联电网特性分析与运行控制[J]. 电网技术, 2016, 40(4): 985-991.
[3] 舒印彪, 赵丞华. 研究实施中的500kV同塔双回紧凑型输电线路[J]. 电力建设, 2002, 23(5): 6-8, 32.
[4] 罗日成, 刘众, 潘茜雯, 等. 500kV同塔双回紧凑型输电线路工频电场的计算及改善措施研究[J]. 电力学报, 2019, 34(6): 513-523.
[5] 梁盼望, 李晶, 徐志鸿, 等. 500kV垂直排列双回紧凑型输电线路电磁感应计算[J]. 机电信息, 2019(33): 19, 22.
[6] 陈晨, 潘灵敏, 宋恒东, 等. 500kV紧凑型线路绝缘子串带电更换方法探讨[J]. 电力安全技术, 2020, 22(4): 54-57.
[7] 唐波, 吴玮华, 刘任, 等. 500kV紧凑型同塔双回输电线路带电作业进入等电位方法[J]. 高压电器, 2018, 54(4): 113-119.
[8] 张文英, 邓华, 钱晶, 等. 云南电网紧凑型500kV线路带电作业安全性研究[J]. 中国电力, 2013, 46(7): 66-71.
[9] 胡毅, 刘凯. 超/特高压交直流输电线路带电作业[J]. 高电压技术, 2012, 38(8): 1809-1820.
[10] 邵方殷. 500kV紧凑型线路导线结构的选型和有关特性[J]. 中国电力, 1996, 29(10): 3-7.
[11] 陈坚平, 向云, 刘治国. 一种可用于带电更换水平双分裂导线多联板双联绝缘子串的卡具[J]. 电气技术, 2017, 18(5): 85-87.
[12] 李辉, 彭沙沙, 徐溧, 等. 带电更换500kV同塔双回输电线路绝缘子工具研制[J]. 电气技术, 2019, 20(6): 37-42.
[13] 向云, 陈坚平, 刘治国, 等. 带电更换特高压双联V串绝缘子的方法与实践[J]. 电气技术, 2017, 18(5): 136-139, 145. |
|
|
|
2021, Vol. 22 
