Digital protective relay monitoring system
作者： Kenji C , O Mitsubishi Denki K.K. Power Ohgaki , O Mitsubishi Denki K.K. Power Sato , Hiroshi C
DOI:
关键词: Relay 、 Digital protective relay 、 Electronic engineering 、 Signal 、 Digital data 、 Digital signal processing 、 Digital filter 、 Engineering 、 Digital signal 、 Current sensor
摘要: A digital protective relay monitoring system for testing the analog input section of by application a signal, with frequency different from power frequency, superimposed on line voltage and current sensor signals. After signals have been sampled in form data, signal component is extracted through filtering process compared reference value, fault detected basis result comparison.
lens.org 参考文章(5)
Joseph Reed, Frequency division multiplex communications system ,(1977)
Jr. Joseph J. Pierro, Cab signal test set for automatically testing the pickup coils and checking an amplifier of cab signal equipment ,(1981)
Thomas K. Hiniker, Vincent N. Bush, Combined data input and test circuit ,(1979)
Toshihisa Funahashi, Yoshiji Nii, Katsushi Nakagawa, Digital protective relay inspection system ,(1976)
Norio Fujisawa, Masao Hori, Eiichi Okamoto, Verfahren und vorrichtung zum ueberwachen einer digitalen schutzrelaiseinrichtung ,(1979)