220 kV跳线风偏放电概率计算模型和影响因素分析  

Calculation Model and Influencing Factor Analysis of Windage Yaw Discharge Probability for 220 kV Jumper

作　　者：杨晓东 魏瑞增 王磊 何浣 周恩泽 YANG Xiaodong;WEI Ruizeng;WANG Lei;HE Huan;ZHOU Enze(Guangdong Key Laboratory of Electric Power Equipment Reliability,Electric Power Research Institute of Guangdong Power Grid Co.,Ltd.,Guangzhou,Guangdong 510080,China)

机构地区：[1]广东省电力装备可靠性重点实验室(广东电网有限责任公司电力科学研究院),广东广州510080

出　　处：《广东电力》2023年第12期89-96,共8页Guangdong Electric Power

基　　金：中国南方电网有限责任公司科技项目(GDKJXM20210044)。

摘　　要：台风伴随着降雨导致输电线路耐张塔的跳线偏离垂直平面并靠近耐张塔,进而导致输电线路放电。目前,针对台风侵袭下考虑降雨的耐张塔跳线风偏放电概率计算模型的研究均不考虑雨荷载的影响。为此,以220 kV电压等级的耐张塔跳线为研究对象,建立得到考虑风雨荷载的220 kV耐张塔跳线的风偏放电概率计算模型及计算公式。在台风条件下,计算典型220 kV电压等级的耐张塔跳线风偏放电概率。结果表明风偏放电概率与气象条件的变化趋势具有一致性。将考虑雨荷载的方法与典型不考虑雨荷载的方法进行对比,在降雨量较小时两者差别不大,这验证了所提计算模型的有效性。此外,探究了绝缘子类型、跳线雨荷载、雨向、降雨量对220 kV耐张塔跳线风偏放电概率计算的影响。The typhoon accompanied by rainfall causes the jumpers of the transmission line tension tower deviate from the vertical plane and approach the tension tower,leading to discharge of the transmission line.At present,there is relatively little research on the probability calculation model for windage yaw discharge of tension tower jumpers considering rainfall under typhoon invasion.Therefore,this paper takes tension tower jumpers with a voltage level of 220 kV as the research object,and establishes a calculation model and formula for the probability of windage yaw discharge of tension tower jumpers considering wind and rain loads.Under typhoon conditions,the probability of windage yaw discharge of tension tower jumpers at typical 220 kV voltage levels is calculated.The results indicate that the probability of windage yaw discharge is consistent with the trend of changes in meteorological conditions.Comparing the method of considering rain load with the typical method of not considering rain load,the difference between the two is not significant when the rainfall is small,which verifies the effectiveness of the windage yaw discharge probability calculation model in this paper.In addition,the impact of insulator type,jumper rain load,rain direction,and rainfall on the calculation of the probability of windage yaw discharge of 220 kV tension tower jumper are explored.

关 键 词：台风 耐张塔 跳线 风偏放电 输电线路 

分 类 号：TM752.5[电气工程—电力系统及自动化]