Rikitar da Dangantaka na Tushen Dangantaka (DFR) don kula da yanayi
Digital Fault Recorder (DFR) System for Circuit Breaker Monitoring
An Digital Fault Recorder (DFR) system ita ce kula a tattara current da voltage oscillograms wanda ake gudanar da shi a cikin har wasu aiki na circuit breaker. Ana ambaci bayanan haka don lokacin da ke da yawan seconds da suka bi daɗi ɗaya zuwa baya a cikin lokacin da ake gudanar da shi. Idan ana ambaci, wannan bayanai zai zama a server, inda software mai tsarike ya yi in-depth analysis. Hakan ya zama a kan waɗannan switchgear da DFR, idan an samun DFR da za a iya program daga baya don a trigger da kuma a saukar da bayanan karkashin aiki.
Bayanan da ake ambaci da DFR system ita ce ake buƙata don tabbatar da masu muhimmanci:
Electrical Phenomena: A cikin aiki na switching, ana iya samun abubuwan electrical kamar prestrikes, re-ignitions, da restrikes, wadannan suna neman abin da ake amfani da shi a cikin electrical behavior da stress na circuit breaker.
Timing Parameters: Masana'antu mai tsarike wanda ke sa aiki na timing wanda ke taimaka wajen taimakawa da performance da coordination na circuit breaker a cikin electrical system.
Operation Classification: Jumlah aiki na fault-related, normal load-carrying, ko no-load, wadannan suna ba da cikakken bayanin tarihin aiki da patterns na usage na circuit breaker.
Arcing Energy: Jumlah arcing energy, wanda ake nufin da I^2T, wanda ke mahimmanci wajen taimakawa da wear and tear na circuit breaker contacts.
Resistor Functionality: Aiki na pre-insertion resistor, wanda ke taimaka wajen taimakawa da aiki na correct operation a cikin sequences na switching.
Idan signal na protection ita ce a cikin DFR ko in iya a correlate da accuracy ta software na analysis, current da voltage oscillograms ke taimaka wajen taimakawa da accurate evaluation na arcing time da make time per pole. Wannan bayanai mai tsarike ita ce invaluable wajen taimakawa da performance da reliability na circuit breaker.
Amma, akwai abubuwan da ke iya rage da limitations a cikin hakan. Sun hada da characteristics na current transformers (CTs), voltage transformers (VTs), da sensors; potential saturation na CTs; sampling rate (daga 1 kHz zuwa 20 kHz); network configuration; type na electrical load; design da specifications na circuit breaker; da kuma storage capacity na DFR da format na stored data.
Wannan ta hanyar da aka bayyana na system architecture na circuit breaker monitoring system wanda take amfani da DFR method.
