摘要
针对共址接地极线路特殊运行工况及过电压分布特点,提出一种基于改进模糊C均值聚类(IFCM)的带电作业安全评估方法。首先通过建模并仿真计算获取共址接地极线路特殊运行工况下的过电压分布,确定了最大操作过电压;然后通过建立共址接地极放电试验模型开展冲击放电试验,利用改进的模糊C均值聚类对典型间隙的试验结果进行聚类,以达到获取各间隙放电电压U_(50)的目的;最后通过绝缘配合方法确定共址接地极带电作业安全间隙距离,并结合实际工程进行安全性分析验证。所提出的研究方法和结论可为共址接地极线路带电作业的安全开展提供参考。
Targeting the special operating conditions and overvoltage distribution characteristics of common grounding pole line,this paper proposes a safety assessment method for live working based on improved fuzzy C-means clustering(IFCM).Firstly,the overvoltage distribution is obtained under the special operating conditions of common grounding pole line through calculation,and the maximum operating overvoltage is determined.Then the impulse discharge test is carried out by establishing the common grounding pole line,and the cluster classification of experimentation results from the typical gap is made with the IFCM to obtain the discharge voltage U_(50).Finally,the safe gap distance for the live working of the common grounding pole line is determined by using the insulation coordination method,and the safety analysis and verification is conducted according to actual project.
作者
吴田
董晓虎
程绳
雷兴列
尹洪
杜勇
吴军
WU Tian;DONG Xiaohu;CHENG Sheng;LEI Xinglie;YIN Hong;DU Yong;WU Jun(College of Electrical Engineering and New Energy,Three Gorges University,Yichang 430072,China;Maintenance Company of State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430074,China;China Electrical Power Research Institute,Wuhan 430074,China)
出处
《智慧电力》
北大核心
2021年第10期16-22,89,共8页
Smart Power
基金
国家自然科学基金资助项目(51807110)。
关键词
共址接地极
带电作业
安全距离
安全防护
common site grounding pole
live working
safety distance
safety protection
