基于ATP-EMTP对中性点直接接地系统铁磁谐振的仿真和消谐措施研究  

Simulation and resonance-erasing measurement for ferroresonance of neutral grounding system based on ATP-EMTP

作　　者：律方成[1] 杜兴伟[1] 刘云鹏[1] 王娟[1] 

机构地区：[1]华北电力大学电气工程学院高电压与绝缘技术研究所,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2006年第2期1-4,共4页Journal of North China Electric Power University：Natural Science Edition

摘　　要：针对中性点直接接地系统的铁磁谐振,在ATP-EMTP下分别对其仿真模型、算法以及波形进行了仿真分析,并对消谐电阻阻值的选择进行了仿真。为了提高消谐电阻的阻值,采用阻容消谐的方法。仿真结果表明,该方法提高了消谐电阻的阻值,即降低了流过PT的电流。最后采用了速饱和电抗器并联电阻的阻尼器的方法,仿真结果表明,该方法提高了消谐电阻的阻值,保护了PT。According to the performance of electromagnetic potential transformer, the ferromagnetic resonance in neutral earthed system is studied. The simulation model, the algorithm, the waveforms and the selection of the erasing resistance value are simulated based on ATP,EMTP. In orderto enhance the value of erasing resistance, the method of resistance-capacitance is adopted. The simulation result indicates that this method is effective. The shock damper composed of quick-magnetic saturated reactance and resisance is used to avoid the saturation of PT. The analysis of simulation result shows the Validity of this suggested method.

关 键 词：铁磁谐振 ATP-EMTP 消谐电阻 阻客消谐 阻尼器 

分 类 号：TM77[电气工程—电力系统及自动化]