光伏电站雷电过电压的计算与分析  

Calculation and Analysis of Photovoltaic Plant Lightning Impulse Over-Voltage

作　　者：孟涛[1] 李振东[2] 罗传仙[1] 刘飞[1] 廖源[1] 

机构地区：[1]国网电力科学研究院,湖北武汉430074 [2]青海省电力公司电能计量中心,青海西宁810100

出　　处：《电工电气》2011年第4期29-31,共3页Electrotechnics Electric

摘　　要：以220kV光伏变电站为例,利用ATP Draw软件建立雷电波侵入变电站数学模型,计算和模拟雷击过电压,并讨论不同雷击点以及站内避雷器对过电压的影响。结果表明,近区雷击导致的过电压水平较远区雷击时要更为严重,且在站内安装两组避雷器组,可将站内设备的雷电过电压限制在较低的水平,没有超过雷电冲击绝缘水平或保证耐压值,绝缘水平的配合裕度均大于15%。Taking 220kV photovoltaic substation as example, this paper used ATP Draw software to establish lightning impulse invading substation math model, calculating and simulating lightning impulse over-voltage and discussed different lightning impulse points and arrestors inside station impacts on over-voltage. Results show that the over-voltage level caused by nearer area lightning impulse is more serious than far area lightning impulse, and two groups of arrestors are installed in substation. Lightning impulse over-voltage level of equipment in the station can be restricted at a lower level, without exceeding lightning impulse insulation level or assuring withstanding voltage value, so that fitting margins of insulation level are all more than 15 percent.

关 键 词：光伏电站 雷击过电压 太阳能电池板 绝缘裕度 

分 类 号：TM615[电气工程—电力系统及自动化] TM863