Synchronized rotor angle measurement using microprocessors

The internal voltage angle of generators is an important parameter that indicates the stability, both transient and steady-state, of a generator. This paper proposes a method of measuring and then synchronizing the internal angle with the use of an optical encoder on the shaft using a microprocessor. With a synchronized angle measurement, accurate stability studies and wide-area controls could be implemented. The experimental setup up of measuring the rotor angle of a generator, and as such the internal angle, is explained in this paper.