A Study on Factors Influencing Ferroresonance in Distribution System

摘要：

Ferroresonance due to transient impact is a common phenomenon in ungrounded distribution system.It is a great threat to the security of power system.Highly nonlinear magnetizing inductance of the potential transformer and zero sequence capacitance of the system may cause low,high or fundamental frequency resonance.On the basis of analyzing the mechanism of ferroresonance,an equivalent model of a 10kV distribution system is established.A simulation model of the 10kV distribution system is built using saturable transformer model in MATLABSimulink.Simulation results reveal as follows: zero sequence capacitance of the system determines types of ferroresonance caused by single phase-to-ground fault; magnetizing resistance,DC resistance of the high-voltage winding and magnetizing characteristic of the potential transformer principally determine whether ferroresonance occurs or not and its amplitude.

关键词： ferroresonance:saturable transformer:single phaseto-ground fault:magnetizing resistance

作者: Wang Chunbao Tian Lijun Qin Yinglin

作者单位: School of Electrical Engineering Shandong University Jinan,PR.China,250061 School of Computer Science & Technology Shandong Jianzhu University Jinan,PR.China,250101

会议类型: 国际会议

会议名称: 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies(第四届电力设施管制、重建及能源技术国际会议 DRPT 2011)

会议地点: 威海

会议语种:英文

页码: 583-588

在线出版日期: 2011-07-06（万方平台首次上网日期，不代表论文的发表时间）