ALGORISM AND SYSTEM FOR DETECTING OF A LINE-TO-EARTH FAULT IN UNGROUNDED DISTRIBUTION POWER SYSTEMS
摘要
An algorithm and a system for detecting line-to-earth fault in an ungrounded power distribution system are provided to divide fault section and reduce fault detecting time by detecting fault in a power distribution system at a remote site. A fault in a power distribution line is recognized by computing zero-phase voltage in an ungrounded power distribution line. When the fault is recognized, zero-phase current in each opening/closing device is measured and a fault section is determined. A zero-phase voltage and a zero-phase voltage are computed in each installation point of the opening/closing device in the power distribution line.
申请公布号
KR20090081635(A)
申请公布日期
2009.07.29
申请号
KR20080007605
申请日期
2008.01.24
申请人
KOREA ELECTRIC POWER DATA NETWORK CO., LTD.
发明人
PARK, HAK YEOL;JIN, YOUNG KYU;CHU, KYOUNG YUNG;LIM, HAN GYUN