Title :
A proposal of a pulse detection method for a sytem to anticipate the breakdown of magnet relays
Author :
Igarashi, R. ; Narita, Y. ; Watanabe, M.
Author_Institution :
Akita Univ., Japan
Abstract :
An anticipation system based on a microcomputer is described. The purpose of the system is to anticipate the electrical breakdown of magnet relays installed in nuclear facilities. Partial discharge (PD) current is detected as a means of anticipating the breakdown. PD current is recognized as a pulse train having variable pulse height and occurrence time. Out of the PD pulse train, one obtained information such as count rate variation, frequency distribution of pulse number in unit time, pulse height variation, individual pulse profile combining pulse height and occurrence time, and statistics from the pulse number distribution. It is concluded that this anticipation system can be applied to nuclear facilities
Keywords :
microcomputer applications; power engineering computing; relay protection; anticipation system; count rate; electrical breakdown; magnet relays; occurrence time; partial discharge current; pulse detection method; pulse height variation; pulse number; pulse profile; Chromium; Coils; Current transformers; Electric breakdown; Microcomputers; Partial discharges; Power system relaying; Proposals; Pulse transformers; Relays;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301394
