Electric Fault Location Detector

Abstract

Now a day’s transmission and distribution line protection is a key problem in power transmission lines because (85-87) percentages of power system disturbances are occurring in transmission lines. Identification of fault source is a tedious task; fast fault detection can help to protect the equipment before any significant damage of the equipment. The exact fault location can help service man to remove persistent of the faults and locate the areas where the faults occur regularly, thus reducing the occurrence of fault and minimize the time of power outages. The paper is intended to detect the location of fault in distribution lines using an Arduino board and the same is transmitted to control Centre using Arduino Uno device. In this proposed thesis, we sense the current by placing the conducting wire inside the loop of the current transformer and is given to the protective circuit to avoid the high current. This is given to the Arduino Uno (microcontroller). In case there is a short circuit, the current in the series resistors modifies accordingly to the resistance that modifies with the distance and the load which is connected through a relay to the Arduino is turned OFF when the resistance is below threshold value. In addition, An LCD display will indicate the status of the distribution lines and buzzer will sound when fault is detected.