디지털 신호처리기법을 이용한 전력계통 주파수 추정 기법에 관한 연구

A study on the Estimation Technique of Frequency in the Power System using Digital Signal Processing

Frequency and phasor are the most important quantities in power system operation. Frequency reflects the dynamic energy balance between load and generating power. To estimate of power system frequency, an accurate digital tracking algorithm by using phasor angle difference is presented. For an evaluation of the proposed technique, simulations by EMTP have been performed. Test results were showed the algorithm's accuracy under the effect of noise and changes in frequency and amplitude on the input signal.