分布式光伏系统接入配电线路感应过电压特性分析  

Induced Overvoltage Characteristics for Distributed Photovoltaic Systems Connected to Distribution Lines

作　　者：柴辰 何一川 林敢 周春天 黎鹏 CHAI Chen;HE Yichuan;LIN Gan;ZHOU Chuntian;LI Peng(Hubei Provincial Engineering Technology Research Center for Power Transmission Line,China Three Gorges University,Yichang 443002,China;College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China;NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;Wuhan NARI Limited Company,State Grid Electric Power Research Institute,Wuhan 430074,China;State Grid Hubei Electric Power Company Xiaogan Power Supply Company,Xiaogan 432000,China)

机构地区：[1]湖北省输电线路工程技术研究中心(三峡大学),湖北宜昌443002 [2]三峡大学电气与新能源学院,湖北宜昌443002 [3]南瑞集团有限公司(国网电力科学研究院有限公司),南京211106 [4]国网电力科学研究院武汉南瑞有限责任公司,武汉430074 [5]国网湖北省电力公司孝感供电公司,湖北孝感432000

出　　处：《电瓷避雷器》2023年第6期20-27,共8页Insulators and Surge Arresters

基　　金：国网江苏省电力公司科技项目(编号:SGJSNJ00KHJS2201221)。

摘　　要：雷击感应过电压是造成有源配电系统故障的主要原因,研究分布式光伏系统接入配电线路后感应过电压特性具有重要意义。在ATP中搭建了分布式光伏系统接入10 kV配电线路感应过电压计算模型,计算了雷击有源配电线路不同位置时,配电线路侧和光伏侧感应过电压的变化规律,并提出了相应的防雷配置优化策略。结果表明:当雷击线路杆塔附近地面时,线路上产生的感应过电压会影响光伏系统稳定运行;当雷击光伏阵列金属边框时,不会对配电线路造成影响;在并网变压器高低压侧分别安装避雷器和SPD时,变压器和光伏侧设备不受配电线路侧感应过电压的影响。Lightning induced overvoltage is the main cause of active distribution system faults,and studying the induced overvoltage characteristics of distributed photovoltaic systems connected to distribution lines is of great significance.A calculation model for induced overvoltage of a distributed photovoltaic system connected to a 10 kV distribution line was established in ATP.The variation patterns of induced overvoltage on the distribution line side and photovoltaic side were calculated when lightning strikes active distribution lines at different positions,and corresponding lightning protection configuration optimization strategies were proposed.The results indicate that when lightning strikes the ground near the transmission line tower,the induced overvoltage generated on the line will affect the stable operation of the photovoltaic system;When lightning strikes the metal frame of the photovoltaic array,it will not affect the distribution line;When installing lightning arresters and SPDs on the high and low voltage sides of grid connected transformers,the transformer and photovoltaic side equipment are not affected by induced overvoltage on the distribution line side.

关 键 词：分布式光伏 ATP 感应过电压 有源配电网 防雷保护策略 

分 类 号：TM615[电气工程—电力系统及自动化] TM75