一种新的电力系统频率实时测量方法  

Real-time Measurement of the Power System Frequency

作　　者：郭彦东[1] 张占江[1] 

机构地区：[1]阿城继电器股份有限公司哈尔滨瑞雷电气科技发展有限责任公司,黑龙江哈尔滨150090

出　　处：《自动化技术与应用》2006年第12期62-64,共3页Techniques of Automation and Applications

摘　　要：提出了一种基于波形拟合技术和泰勒级数展开的实时频率测量方法,并针对电压信号中谐波分量对测频精度的影响,设计了数字带通滤波器,对实时采集电压信号进行数字滤波处理以减小谐波成分,进而提高了测频精度。仿真试验表明算法实现简单、准确,对谐波有较好的抑制能力,适合于电力系统继电保护和测量的要求。A new method based on curve fitting and Taylor series expansion is presented for real-time measuring the frequency in power system. A digital band-pass filter is used to reduce the influence of harmonic components on the accurracy of measurment. The result of simulation shows that the algortihm can meet the needs of frequency measurement and relay protection in power system.

关 键 词：电力系统 频率 频率测量 

分 类 号：TM77[电气工程—电力系统及自动化]