DC backup power supply monitoring in substation based on wireless sensor network

DC system has an important role in the operation of the substation. It is used for the operating of protection relays, control (DC 110V and 220V) and operating of Scadatel (DC 48V). During this time in Kentungan Substation, controlling and monitoring of the batteries are still done manually in a certain time period. This research is to design a system of Wireless Sensor Network to monitor the batteries at substations in real time and automatically. Transmitter and receiver can work properly, which can communicate using zigbee communication with a range of ± 350 meters for outdoor LOS and ± 70 meters for indoor NLOS. System interface can perform properly, it is able to provide DC power supply state information and give warnings in case of overvoltage or overcurrent.