变电站电磁干扰预测分析

The Forecast Analysis in Substation Electromagnetic Interference

为了研究变电站开关操作时的电磁干扰问题,本文主要进行了两方面的研究。首先,针对500k V超高压变电站隔离开关切合高压空载母线操作瞬态进行仿真研究,利用ATP软件建立了空气绝缘变电站隔离开关切合空母操作瞬态的电磁仿真模型,并对电磁干扰在空载母线端点处产生的瞬态过电压、过电流进行分析,其仿真结果与实测吻合;其次,将改进多变量灰预测建模理论引入了变电站电磁干扰环境问题的研究,建立用于电磁干扰数据预测的多变量灰预测模型,预测结果达到了预期要求,证明将多变量灰预测建模理论应用于电磁干扰预测分析是可行的。

In order to study the electromagnetic interference caused by the switching operation, this article focuses on two main subjects. First we have simulated the transient behavior of the isolating switch suit on high votage empty-load bus-bar operation in 500 k V extrahigh voltage substation. We have used the ATP software to establish a transient electromagnetic simulation model of the air insulated isolating switch on the bus-bar operation of the substation, and analyzed the electromagnetic interference in the empty-load bus-bar endpoint of the over-voltage and over-current transient. The simulation results is in accordance with the measure result. Second, we introduced the modified multivariate grey prediction model into the research of substation electromagnetic interference, and established a multivariate grey prediction model for electromagnetic interference prediction data. The predicted results meet the expection, and supported the applying of multivariate grey prediction model in the analysis of electromagnetic interference prediction.