摘要
为了研究雷电流波形对超高压输电线路耐雷水平的影响,本文首先在理论上分析了超高压输电线路耐雷水平与雷电流波形的关系。利用EMTP仿真软件中的基础元件建立了雷电流模型、输电线路杆塔模型、绝缘子闪络模型、进线端模型。利用EMTP仿真软件得出超高压输电线路在不同雷电流波形下的耐雷水平。通过所得到的数据分析得出在不同的雷电流波形作用下超高压输电线路耐雷水平及其过电压的变化规律,为超高压输电线路如何采用既经济又安全的绝缘水平提供一定的依据。
In order to study the influence of the lightning current waveform on lightning resisting level of EHV transmis- sion line, this article analyzes the relationship between lightning resisting level of EHV transmission lines and lightning current waveform. Using basic elements in the EMTP simulation soft- ware establishes the lightning current model, transmission line tower model, insulator flashover model the terminal model. EMTP simulation software is used to find the lightning resisting level of the EHV transmission line under different lightning cur- rent waveform. By analyzing the obtained data, the lightning re- sisting level of the EHV transmission line and over-voltage vari- ation rules for EHV transmission line under different lightning current waveforms are found. It provides certain basis for how to use ultra-high voltage power line insulation level both economi- cally and safely.
出处
《电力学报》
2013年第6期463-467,515,共6页
Journal of Electric Power
关键词
耐雷水平
雷电波
输电线路
波形
仿真
lightning withstanding level
lightning curent
transmission lines
waveform
simulation
