secondly, the modification function and resonance produced by running power capacitor increased the harmonic at the same time, which worsen the operation environment of itself . it is very important to analyze the reason of harmonic and conduct the valid measure to restrain its affect and guarantee the safely operation of power network . the author has present the point in this paper, based on the operation characteristic of modern power system, the author described the production and development of network harmonic with the consideration on the same kind of problem 本文以現(xiàn)代電力網(wǎng)絡(luò)的運(yùn)行特點(diǎn)為基礎(chǔ),結(jié)合近年來對(duì)所涉及的同類問題的思考,對(duì)系統(tǒng)諧波的產(chǎn)生、發(fā)展的一般規(guī)律進(jìn)行較為全面的理論闡述;以大量事故案例分析諧波所帶來的危害和影響;通過實(shí)地測(cè)試和對(duì)所得數(shù)據(jù)的分析研究,推導(dǎo)出一種應(yīng)用matlab的fft的諧波分析方法,給出了該方法的程序流程框圖及結(jié)果界面顯示;在此基礎(chǔ)上進(jìn)一步探討了利用現(xiàn)代通信網(wǎng)絡(luò)建立電網(wǎng)諧波網(wǎng)絡(luò)管理分析系統(tǒng)的總體構(gòu)想和功能。