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首页> 外文期刊>Power Delivery, IEEE Transactions on >Influence of Modeling Methods on the Calculated Lightning Surge Overvoltages at a UHVDC Converter Station Due to Backflashover
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Influence of Modeling Methods on the Calculated Lightning Surge Overvoltages at a UHVDC Converter Station Due to Backflashover

机译：建模方法对超高压直流换流站雷击过电压计算的雷电浪涌过电压的影响

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摘要

The insulation coordination of the converter station is very important for the security and economy of the UHVDC power transmission system, and lightning surge overvoltages at the converter station should be calculated accurately. This paper mainly analyzes the influence of modeling methods on the lightning surge overvoltages caused by the backflashover of the incoming dc transmission lines by using the PSCAD program, such as the selection of lightning stroke current waveform, tower model, flashover criterion of the insulator, and so on. The simulation results show that modeling methods have a great influence on the backflashover lightning withstand level of the incoming dc transmission lines, but their influences on the lightning surge overvoltages of the equipment in the converter station are not so obvious.
机译：换流站的绝缘配合对于特高压直流输电系统的安全性和经济性非常重要，应准确计算换流站的雷电浪涌过电压。本文主要通过PSCAD程序分析建模方法对传入直流输电线路反跳引起的雷电浪涌过电压的影响，例如雷击电流波形的选择，塔架模型，绝缘子的闪火准则以及以此类推。仿真结果表明，建模方法对输入直流输电线路的反闪雷电承受能力影响很大，但对变电站设备雷电浪涌过电压的影响并不明显。

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