CAJ | 학술논문

配网设备由于绝缘水平低，在遭受雷击时所产生的雷电感应过电压是配网设备发生绝缘闪络的主要原因，从而降低配网供电可靠性，对人们生产和生活产生严重影响。本文主要介绍了电磁暂态仿真软件PSCAD在分析10kV配电变压器雷电感应过电压上的应用，通过搭建10kV架空线路仿真模型，计算了配变原、副边感应过电压大小，同时计算分析了雷电流幅值、变压器接线方法、避雷器接地线、变压器原副边与避雷器间的电缆以及避雷器通流容量等因素对雷电感应过电压大小的影响。
배망설비유우절연수평저，재조수뢰격시소산생적뇌전감응과전압시배망설비발생절연섬락적주요원인，종이강저배망공전가고성，대인문생산화생활산생엄중영향。본문주요개소료전자잠태방진연건PSCAD재분석10kV배전변압기뇌전감응과전압상적응용，통과탑건10kV가공선로방진모형，계산료배변원、부변감응과전압대소，동시계산분석료뇌전류폭치、변압기접선방법、피뢰기접지선、변압기원부변여피뢰기간적전람이급피뢰기통류용량등인소대뇌전감응과전압대소적영향。
Due to it’s low insulation level,the lightning induced overvoltage is the main reason for the insulation flashover of the distribution network equipment,which will decrease the reliability of distribution network and also have a severe impact on the work and life of people.In this paper,the application of the electromagnetic transient simulation software PSCAD on analyzing the lightning induced overvoltage of 10kV distribution transformer is introduced first.The magnitude of lightning induced overvoltage on the original and secondary side of the distribution transformer is simulated through putting up the simulating module of 10kV overhead line.Moreover,the impact of factors like the amplitude of lightning current, transformer wiring group,the grounding of surge arrester,the capability of surge arrester on the magnitude of lightning induced overvoltage is simulated.