GPRS based distribution transformers monitoring system

Transformers are one of the most important equipments in distribution networks. Under abnormal circumstances, due to the great delay in detection of improper operating equipments such as overload operation of transformers and lack of online connection to emergency alarms of protective relays like Buchholz and thermometer, these equipments sometimes encounter distribution companies with unpredicted heavy costs. In this paper we propose a GPRS (General Packet Radio Service) based monitoring and control system which is able to reduce the cost of damaged transformer replacement. Furthermore, the method is capable to improve reliability, create the unity and coordinated management of substations. With that motivation, several prototypes of the proposed monitoring system are successfully employed in Zanjan distribution network. The contributions are observed to be highly effective.