摘要
针对长春西郊220 kV变电站的二次系统及弱电设备的实际情况,通过分析过电压产生原因及侵入途径,建立了系统各相关元件的数学模型,并利用PSCAD/EMTDC对过电压数值进行了仿真计算,得出不同雷电波及操作过电压作用下二次及弱电系统电压、电流的变化。根据仿真结果提出了长春地区变电站二次系统防雷改进措施。
In view of the actual situation of secondary and weak electricity system of 220 kV substation in Changchun＇s western suburb,this paper establishes the mathematical models of relative parts through the analysis of cause and invasion routes of over-voltage,conducts simulation calculation of over-voltage value by applying PSCAD/EMTDC,then concludes the change of voltage and current of secondary and weak electricity system under different lightning surge and operational over-voltage and proposes measures for improving lightning protection of substation＇s secondary system in Changchun.
出处
《黑龙江电力》
CAS
2010年第5期346-350,353,共6页
Heilongjiang Electric Power
