CAJ | 학술논문

针对10kV配电线路的单相接地故障,提出了一种不依赖于通信的自愈方案.方案包括故障选线、故障选段与隔离、非故障区段复电3个部分.故障选线采用的是基于健全线路和非健全线路的模型识别法;故障选段采用零压-时限的电压型逻辑识别和隔离故障区段;隔离故障区段后,联络点及非故障区域自动化点基于电压-时限逻辑复电.仿真结果和现场试验结果表明,所提自愈方案能可靠准确地实现单相接地故障自动快速隔离、非故障区域快速复电,且无需电流定值整定,无需通信,工程实施简易经济,可对现有配电网馈线自动化进行理论和实践指导.
침대10kV배전선로적단상접지고장,제출료일충불의뢰우통신적자유방안.방안포괄고장선선、고장선단여격리、비고장구단복전3개부분.고장선선채용적시기우건전선로화비건전선로적모형식별법;고장선단채용령압-시한적전압형라집식별화격리고장구단;격리고장구단후,련락점급비고장구역자동화점기우전압-시한라집복전.방진결과화현장시험결과표명,소제자유방안능가고준학지실현단상접지고장자동쾌속격리、비고장구역쾌속복전,차무수전류정치정정,무수통신,공정실시간역경제,가대현유배전망궤선자동화진행이론화실천지도.
This paper proposes a self-healing solution of single-phase ground faultfor the 10 kV distribution line single-phase ground fault without communication.This scheme includes three phases:fault line selection,and non-fault zone restoration.Fault line selection is based on parameter identification method,fault segment detection and isolation is based on zero-voltage time-bound logic,and the restoration of connection points and automation points of non-fault zone are based on voltage time-bound logic.The simulation results and thefield testing results verify that the self-healing solution could achieve the automatic quick fault isolation quickly and reliability.In addition,the adjustment of the current and communication are not needed,and the implementation is simpler and more economic.Therefore it could be theoretical and practical significance for the research of 10kV feeder automation.