2.6萬字 57頁
摘要：
統(tǒng)的故障分為對(duì)稱故障和不對(duì)稱故障兩大類。對(duì)于對(duì)稱故障，比如三相短路，由于沒有破壞電力網(wǎng)絡(luò)的三相對(duì)稱性，因此可以按照單相的分析方法進(jìn)行分析計(jì)算。對(duì)于不對(duì)稱故障，比如單相接地短路，就不能使用單相的計(jì)算方法處理了。電力系統(tǒng)故障分析方法主要有網(wǎng)絡(luò)建模和故障計(jì)算等幾個(gè)方面。建立用于故障分析的網(wǎng)絡(luò)的數(shù)學(xué)模型是計(jì)算機(jī)編程計(jì)算的基礎(chǔ)。當(dāng)前在電力網(wǎng)絡(luò)中最常用的網(wǎng)絡(luò)參數(shù)矩陣有節(jié)點(diǎn)參數(shù)矩陣和支路參數(shù)矩陣。在故障分析計(jì)算中一般采用網(wǎng)絡(luò)節(jié)點(diǎn)參數(shù)矩陣作為電力網(wǎng)絡(luò)的數(shù)學(xué)模型，又主要使用節(jié)點(diǎn)導(dǎo)納矩陣作為分析的基礎(chǔ)。本文研究了一種不對(duì)稱電力系統(tǒng)分析的計(jì)算方法——對(duì)稱分量法。這種方法不需要形成故障后全網(wǎng)的節(jié)點(diǎn)導(dǎo)納陣，可以方便地計(jì)算各種簡(jiǎn)單故障和復(fù)雜故障。

關(guān)鍵詞：多態(tài)相分量法 三相不對(duì)稱 故障分析 不對(duì)稱電力系統(tǒng)

Abstract
his paper puts forwards the symmetrical components method as the calculating method for the analysis on faults of unsymmertrical power system. The admittance matrix for nods of whole network after faulting is not necessary,hence the calculation for various simple and complex faults are easy .In the process of calculation ,not only the decouplable feature of symmetrical elements in the coordinate system of symmetrical components is fully utilized,but also the symmetrical parts and unsymmetrical parts are treated as separate blocks, thus the efficiency of calculation is rasied moreover.
Key words: polymorphic phase components; three-phase unbalance; fault analysis; power system; symmetrical components method; unsymmertrical power system.