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Development of a partial discharge location method for power cables
Author(s) -
Ohno Hironobu,
Katsuta Ginzou,
Sakaguchi Ryuji,
Ebinuma Yasumitsu,
Sakai Nobuhiro,
Nagaoka Akira
Publication year - 1993
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391130802
Subject(s) - partial discharge , power cable , reliability (semiconductor) , sensitivity (control systems) , power (physics) , electrical engineering , position (finance) , computer science , voltage , engineering , materials science , electronic engineering , physics , composite material , finance , layer (electronics) , quantum mechanics , economics
Insulation deterioration of power cables can be measured by the method of partial discharge. If a large partial discharge is detected in a cable, the cable is considered to be defective and a partial discharge is located to find the position of the defect. However, partial discharge location methods are generally disadvantageous in that they require much skill for operation and have inferior sensitivity and accuracy. To solve these problems, the authors developed a locating method using two‐phase cable and an automatic partial discharge locator which automatically localizes the generating site of discharge immediately after making partial discharge measurement by simple operations. Field measurements are made on SL (separately lead‐covered) cables and other cables with the locator to test its accuracy and reliability, and it was found that the device is effective and useful.