摘要
电压波动和闪变是衡量电能质量的重要指标。在对IEC提出的电压闪变测量方法进行分析的基础上,利用间接解调法对FFT计算结果中引起的幅值衰减进行修正,从而提高了离散瞬时闪变值算法的精度。系统用DSP实现电压闪变信号的采集和处理,并给出了软件设计方法。实验证明:该设计能很好地满足电能检测的要求,同时具有良好的应用前景。
Voltage fluctuation and flicker were two important indexes of electrical energy quality.On the basic of analysis of IEC voltage flicker measuring methods,the amplitude attenuation resulted from FFT by indirect de-modulation method was calibrated,which improved the pecision of discrete instantaneous flicker algorithm.Voltage flicker signal collecting and processing were realized based on DSP and software design method was given.The re-sult showed that the design satisfied the demands of electrical energy quality detection and it had a good application prospect.
出处
《低压电器》
北大核心
2010年第19期34-37,49,共5页
Low Voltage Apparatus
关键词
电压闪变
间接解调法
监测
voltage flicker
indirect demodulation method
measurement
