Controller Design For Detection of Various Power Thefts

Power theft is the serious unlawful methods in developing countries like India in order to avoid electricity charges. It is a major problem in every country and it must be avoided. So it is necessary to propose a system which can able to monitor the power theft and also location of theft occur. The proposed system must take required action during theft conditions. This paper describes the reliable approach to detect the power theft and to clear the fault in distribution lines. The developed control scheme require the readings of current and voltage values of house hold energy meter and transformer of distribution side. From the control design, if there is any voltage drop in load side because of power theft, the system automatically detects the power theft and locates the distance from the distribution line. So the circuit breaker got a signal from the controller simultaneously. The breaker blocks the electricity and it rechecks four times to remove the theft. In the paper, the theft is created artificially under various loads. Three different power thefts like R, RL and RLC are taken at three different tapping and percentage error is calculated from output and presented in tabular column. The proposed scheme is done in MATLAB/Simulink environment.