Implementation XOR Logic Gate for Phase Difference Detector in Automatic Synchronizer for Synchronous Generator

Connecting a synchronous generator to line have to be careful or it can make some problems. There are several conditions to meet if synchronous generator is synchronizing with line such as voltage, frequency, and phase difference. In this paper, only focusing on how to measure the phase difference between synchronous generator and line. This value can be used for controlling generator’s speed to achieve zero phase difference in automatic synchronizer. Measuring phase difference can use synchronizing lamp but there are some disadvantages such as lamp becomes dark at about half its rated voltage even though phase difference not zero, and it cannot tell exactly what the value of phase difference is. XOR logic gate can solve that problems, it can detect phase difference between synchronous generator and line up to 180 degrees. This research also creates a software that can act like synchroscope.