中国电机工程学报2024，Vol.44Issue(2)：464-475,中插3,13.DOI:10.13334/j.0258-8013.pcsee.222003
基于有源消弧暂态衰减信息的配电网接地故障跟踪检测方法
Ground Fault Tracking and Detection of Distribution Network Based on Transient Attenuation Information of Active Arc-suppression Process
摘要
Abstract
The existing single-phase grounding fault detection technologies lack the ability of fault degree tracking and line selection during arc suppression process in distribution network.Making full use of the transient information during arc suppression process,the lumped parameter equivalent model considering line parameter asymmetry is established,the physical significance of attenuation characteristics of zero sequence voltage in arc suppression process is demonstrated,and a new fault detection method for distribution network considering fast arc suppression is proposed,which is highly sensitive to the detection of both low and high resistance grounding fault.Fault resistance measurement,fault degree tracking and fault line selection can be realized by observing the waveform of zero sequence voltage and current during the switching process of arc suppression full compensation in actual application.It is easy to operate and complete.The effectiveness of the method is verified by simulation experiments,which provides a new theoretical basis for ground fault detection of distribution network.关键词
单相接地故障/有源柔性接地/衰减直流特征/过渡电阻辨识/故障选线Key words
single phase grounding fault/active flexible grounding/decaying DC characteristics/identification of transition resistance/fault line selection分类
信息技术与安全科学引用本文复制引用
刘宝稳,万子雄,曾祥君,张慧芬,马宏忠..基于有源消弧暂态衰减信息的配电网接地故障跟踪检测方法[J].中国电机工程学报,2024,44(2):464-475,中插3,13.基金项目
国家自然科学基金项目(51737002) （51737002）
江苏省自然科学基金面上项目(BK20231460) （BK20231460）
江苏省研究生科研与实践创新计划项目(KYCX23_0679). Project Supported by National Natural Science Foundation of China(51737002) （KYCX23_0679）
Natural Science Foundation of Jiangsu Province(General Program)(BK20231460) （General Program）
Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX23_0679). （KYCX23_0679）
