Prevention of power blackout and power theft using IED

Abstract

As today's electricity production do not meet with the requirements of all the consumers and the industries, the traditional network needs to be converted to the smart grid network where the electricity produced from the natural resources and the renewable energy sources are integrated. The distribution network is prone to losses more when compared to the generating and transmission system. So it is important to prevent the power losses and to improve the quality of the power supply, the traditional feeder terminal unit is converted to intelligent electrical device. First the design of smart distribution network is presented. Then the module of intelligent electrical device is designed and its functions and characteristics are described. Then the two relay protection algorithm used in intelligent electrical device is proposed. To ensure the continuity of the power supply the smart distribution network is connected in ring main distribution system. Next, the algorithm for fault detection, location, fault isolation and power restoration based on the information interaction and self-healing process of intelligent electrical device for the smart distribution grid is proposed. The automation system made the synchronisation of the power from all the sources. So when energy from all the sources are integrated in smart grid, the efficiency of the system increases. But the power demand and power theft in the smart distribution network still remains. Thus finally, the indication for preventing power demand and power theft is presented. Through the information interaction and self-healing process of intelligent electrical device, the quality and continuity of power supply is ensured to all the consumers and industries.