摘要
针对配电网线路缺少较精确的雷击跳闸率计算方法以及考虑实际地形和雷电活动的差异化防雷方法的问题开展理论分析、仿真计算和方案研究。首先,采用实际线路参数和雷电定位系统实测的落雷数据,基于电气几何模型分析线路引雷范围,提出了精确的雷击跳闸率计算方法。然后,基于配电线路差异化参数及地区实际落雷数据,开展了差异化防雷方法分析,提出了针对配电网线路的普适性的差异化防雷分析方法和防护措施。结果表明:综合考虑线路参数和落雷差异性后的雷击跳闸率计算方法可准确反应线路实际情况;在防雷效果一致的情况下,采用差异化防雷方法可降低约30%的经济投入。
The tripping of distribution lines are mainly caused bylightning strikes.For the lack of accurate lightning trip rate calculation for distribution lines and considering differential lightning protection based on actual topography and lightning data,theoretical analysis and simulation calculation are carried out in this paper.Firstly,the accurate lightning trip rate calculation is proposed,according to the actual line parameters and the lightning data measured by the lightning localization system.The lightning range of the line is analyzed based on the electrical geometry model.Then,the differential lightning protection analysis method and the universal protective measures for the distribution lines are proposedon the basis of the differentiation parameters of the distribution line and the actual lightning data of the area.The result shows that,after taking the line parameters and the difference of lightning data into account,the lightning trip rate calculation can fully reflect the actual situation of the line.Under the same condition of lightning protection effect,the differential lightning protection method can reduce the economic input by nearlythirty percent.
作者
刘浩
韩永霞
陈长富
陈雅芳
程子专
李立浧
LIU Hao;HAN Yongxia;CHEN Changfu;CHEN Yafang;CHENG Zizhuan;LI Licheng(South China University of Technology,Guangzhou 510641,China;Guangzhou Zhongguang Electronic Technology,Guangzhou 510660,China;Yangjiang Power Supply Bureau,Yangjiang 529500,China)
出处
《电瓷避雷器》
CAS
北大核心
2020年第4期7-13,20,共8页
Insulators and Surge Arresters
基金
广东电网有限责任公司科技项目资助(编号:GDKJXM20162102)。
关键词
配电线路
雷击跳闸率
差异化防雷
distribution lines
lightning trip rate
differentiated lightning protection
