摘要
雷电是造成有源配电线路故障的主要原因,研究有源配电网的雷害风险评估具有重要意义。以南京地区含分布式光伏系统的配电线路为研究对象,建立了含分布式光伏系统配电线路雷击过电压计算模型,分析了雷击时光伏侧和配电线路侧之间的相互影响,构建了两侧的电气几何模型,计算了光伏侧和线路侧跳闸率,并根据计算结果进行风险评估。结果表明:雷击距光伏侧最近的杆塔时,光伏侧的雷击跳闸率由27.52次/(100 km·a)上升至29.63次/(100 km·a),雷击风险较高;当光伏侧遭受雷击时,其相邻的3基杆塔受雷电侵入波影响跳闸率增加一倍,风险等级也较高。
Lightning is the main cause of active distribution line fault.It is of great significance to study the lightning risk assessment of active distribution network.The distribution line with distributed photovoltaic system in Nanjing area was taken as the research object.The calculation model of lightning overvoltage on distribution lines with distributed photovoltaic system was established,and the interaction between photovoltaic side and distribution line side during lightning strike was analyzed.The electrical geometric model on both sides was constructed.The trip rates of the photovoltaic side and the line side were calculated,and the risk was evaluated according to the calculation results.The results show that when lightning strikes the nearest tower on the photovoltaic side,the lightning tripout rate on the photovoltaic side increases from 27.52 times/(100 km·a)to 29.63 times/(100 km·a),and the lightning risk is higher.When the photovoltaic side is struck by lightning,the tripping rate of the adjacent three towers affected by the lightning intrusion wave is doubled,and the risk level is also higher.
作者
柴辰
蔡超
何一川
黎鹏
吴田
马志青
CHAI Chen;CAI Chao;HE Yi-chuan;LI Peng;WU Tian;MA Zhi-qing(College of Electrical Engineering&New Energy,China Three Gorges University,Yichang 443002,China;Hubei Provincial Engineering Technology Research Center for Power Transmission Line(China Three Gorges University),Yichang 430002,China;State Grid Hubei Electric Power Company,Wuhan 430000,China;Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute,Wuhan 430206,China;Qinghai Electric Power Test and Research Insititute,Xining 810008,China)
出处
《科学技术与工程》
北大核心
2025年第17期7219-7225,共7页
Science Technology and Engineering
基金
国家自然科学基金(51807110)。
关键词
分布式光伏
配电线路
电气几何模型
雷击跳闸率
风险评估
distributed photovoltaic
distribution lines
electrical geometry
lightning trip-out rate
risk assessment
