一种发电机功角实时测量装置的实现

摘要

In order to realize precise measurement for power angle of the generator, the real-time measurement device of the power angle of generator has been designed based on the measuring method of absolute inner potential angle. By adopting the structure of DSP + CPLD, the signals including the voltage, current, and key phase pulse of generator are processed to obtain power angle and rotating speed. Hie practical test indicates that the device realizes real-time measurement for the power angle of generator; the measuring error is less than 0.7° under nominal frequency, and offers good synchronous effect and meets the requirements of real-time monitoring in power system.%为实现发电机功角的准确测量,基于发电机绝对内电势角的测量方法,设计了一种实时发电机功角测量装置.该装置采用DSP+CPLD结构,通过对采集的发电机机端的电压、电流和键相脉冲等信号进行处理得到功角和转速.实际测试表明,该装置可以实现发电机功角的实时测量,额定频率下测量误差小于0.7°,并具有较好的同步效果,满足电力系统实时监控的要求.