A distribution transformer outage detection system based on radio mobile communication system is purposed in this paper. The outage alarm will be sent back to outage information processing system (OIPS) as long as the outage occurred at transformer. OIPS is designed to be compliant with Taiwan Power Company (TPC) currently used operation management system (OMS) so that TPC''s system managers are able to precisely and quickly locate outage affected area and assign engineers for repairs. Transformer Outage Detector (TOD) will also send back a restored signal as the electricity is restored. The restored message allows TPC''s system managers to get a grip of electricity restoration situation.
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