基于DSP的电力系统谐波间谐波测量
首发时间:2009-12-14
摘要:电力系统的谐波和间谐波测量是进行谐波治理的基础。本文根据IEC61000-4-7的要求,介绍了当今主要的几种谐波和间谐波的测量方法,对电力系统建立了数学模型,着重推导了以DFT(FFT)为主要原理的谐波测量的方法,在同步采样和非同步采样的两种前提下分析了谐波测量的误差,并在非同步的情况下,对几种常用的加窗方法进行了仿真分析,比较其优缺点,以TI公司的DSP2812为主控芯片对其仿真的算法进行了硬件的实现。
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Harmonics and Interharmonics mearsurements of Power Systems with DSP
Abstract:Harmonics and Interharmonics mearsurements of Power Systems is the base of Harmonics control. According to the demand of IEC61000-4-7, several ways of Harmonics and Interharmonics mearsurements are introduced In this paper. The power system is established a mathematical model, and the mearsurement of DFT(FFT) is mainly introduced .The error of Harmonics mearsurements is been analysed while sychronous sampling and Non-sychronous sampling. The several commonly used window functions are copmared in use of simulation when the sampling is Non-sychronous. At last,the algorithm of Harmonics and Interharmonics mearsurements is come true in use of TI’s DSP 2812.
Keywords: Power Systems Harmonics and Interharmonics windows functions DSP
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