配网电磁式电压互感器铁磁谐振抑制措施仿真研究  

Simulation Study on Ferromagnetic Resonance Suppressed Measures of Electromagnetic Voltage Transformer in Distribution Network

作　　者：饶玉凡[1] 曾祥耀 

机构地区：[1]长沙电力职业技术学院,湖南长沙410131 [2]湖南省电力勘测设计院,湖南长沙410007

出　　处：《水电能源科学》2013年第7期226-228,221,共4页Water Resources and Power

摘　　要：为解决配网中的铁磁谐振问题,以ATP-EMTP仿真软件为平台,建立了电磁式电压互感器饱和引起的铁磁谐振仿真模型,并分析了两种铁磁谐振诱发条件下的谐振规律,进而采用单相接地故障来诱发铁磁谐振,对现有消谐措施进行了仿真对比分析。结果表明,各种消谐措施均只能在一定范围内的对地电容电流下较好地抑制铁磁谐振。因此,在实际配网运行中,应考虑系统对地电容电流的大小(即线路的出线长度)来合理选择消谐措施。In order to solve the problem of ferromagnetic resonance in distribution network, ferromagnetic resonant simulation model caused by the saturation of electromagnetic voltage transformer is established and the resonance laws of ferromagnetic resonance induced by two different conditions are analyzed based on the ATP-EMTP simulation software. And then, the single phase grounding fault is used to induce ferromagnetic resonance and the existing harmonic elimina- tion measures are compared. The results show that different harmonic elimination measures can suppress ferromagnetic resonance effectively only within a certain range of capacitive current to ground. So, in the actual operation of the distribution system, we should consider the system capacitive current to ground size or wire length to select the corresponding suppressed measure.

关 键 词：配网 电磁式电压互感器 铁磁谐振 抑制措施 仿真 

分 类 号：TM743[电气工程—电力系统及自动化]