CAJ | 학술논문

多数电力系统控制和保护装置都需要根据系统电压的频率,动态调整AD采样间隔,这种测量手段存在一些固有的缺陷,因此需要一种实用有效的频率跟踪手段.本文阐述了频率跟踪的必要性,分析了目前广泛使用的频率跟踪方法的不足,提出了基于采样点值的新型频率跟踪方法,并通过RTDS实时数字仿真工具验证该频率跟踪方法在电力系统谐波和故障作用下的性能.
다수전력계통공제화보호장치도수요근거계통전압적빈솔,동태조정AD채양간격,저충측량수단존재일사고유적결함,인차수요일충실용유효적빈솔근종수단.본문천술료빈솔근종적필요성,분석료목전엄범사용적빈솔근종방법적불족,제출료기우채양점치적신형빈솔근종방법,병통과RTDS실시수자방진공구험증해빈솔근종방법재전력계통해파화고장작용하적성능.
The majority of power system control and protection devices need toadjust the AD sampling time dynami?cally according to the frequency of the voltage. As these measuring methods have inherent defects,it needs a practi?cal and effective mean of frequency tracking. This paper describedthe necessity of frequency tracking,ana?lyzedthedeficiency of frequency tracking methods which are widely used at present. We proposed a new tracking methodbased on the frequency of the sampling point value,and verifiedthe validity of the method by the RTDSin the situationof power system harmonics and fault.