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

fYear

1992

fDate

25-31 Oct 1992

Firstpage

685

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/NSSMIC.1992.301394

Filename

301394