Study on tuning method of low excitation limit curve of Generator

The low excitation limit curve of generator which is tuned correctly can helps to ensure the normal operation of generator, because the generator and power system will be separated if the voltage of auxiliary power is too low, loss of field protection is in operation or static stability of generator is not enough. This paper describes a tuning method of low excitation limit curve of Generator. Experiment proved that the method is practical and effective.