本文選題：三相三線制電路 + 不平衡負荷�。� 參考：《中國電機工程學(xué)報》2017年19期

【摘要】：補償負荷不平衡時,通常以理想三相電壓源電勢作為公共連接點(point of common coupling,PCC)參考電壓,實際系統(tǒng)中據(jù)此設(shè)計的補償網(wǎng)絡(luò)并不能完全平衡。對此,針對負荷不平衡的三相三線制電路,為更符合PCC處三相電壓不對稱的實際情形,該文考慮系統(tǒng)導(dǎo)納,將系統(tǒng)側(cè)等效為戴維南模型后,建立了不平衡負荷的負序加權(quán)等效模型;基于等效負荷參數(shù),運用Steinmetz平衡化理論給出了相間補償網(wǎng)絡(luò)電納的負序加權(quán)計算公式。網(wǎng)絡(luò)參數(shù)是以加權(quán)系數(shù)為變量的函數(shù),可兼容已有的針對三相三線制電路設(shè)計的平衡化補償網(wǎng)絡(luò)方法,為補償?shù)膬?yōu)化提供了理論基礎(chǔ)。結(jié)合具體算例,該文給出了負序加權(quán)系數(shù)和補償容量的三維關(guān)系圖,以補償容量最小為目標,確定出平衡化補償?shù)淖顑?yōu)方案,仿真與物理實驗驗證了所提模型和平衡化方法的正確性。
[Abstract]:When the compensation load is unbalanced, the ideal three-phase voltage source potential is usually used as the common connection point of the reference voltage of the common coupling PCCs, and the compensation network can not be completely balanced in the actual system. In this paper, aiming at the three-phase three-wire circuit with unbalanced load, in order to meet the actual situation of three-phase voltage asymmetry at PCC, the system admittance is considered and the system side is equivalent to Thevenin model. The negative sequence weighted equivalent model of unbalanced load is established, and based on the equivalent load parameters, the formula of negative sequence weighted calculation for the electrical admittance of interphase compensation network is given by using the Steinmetz equilibrium theory. The network parameters are functions with weighted coefficients as variables, which can be compatible with the existing balanced compensation network methods designed for three-phase three-wire circuits, which provides a theoretical basis for the optimization of compensation. In this paper, a three-dimensional relationship diagram of negative sequence weighting coefficient and compensation capacity is given, and the optimal scheme of balancing compensation is determined by taking the minimum compensation capacity as the goal. Simulation and physical experiments verify the correctness of the proposed model and the balance method.
【作者單位】： 新能源電力系統(tǒng)重點國家實驗室(華北電力大學(xué));
【基金】：國家自然科學(xué)基金青年基金項目(51207051)~~
【分類號】：TM714.3

【相似文獻】

相關(guān)期刊論文 前5條

1 李鵬,石新春,梁志瑞,陳志業(yè),周曉靜;對電弧爐平衡化補償實用公式推導(dǎo)及驗證[J];電工技術(shù)學(xué)報;2001年01期

2 任強;三相平衡化原理和應(yīng)用[J];電力電容器;2002年01期

3 王林;趙曦;王金光;;基于三相線電流平衡化的三相不平衡補償技術(shù)研究[J];中國水運(下半月);2012年10期

4 吳杰;中性點有效接地系統(tǒng)不平衡負載的平衡化補償理論研究[J];電工技術(shù)雜志;2003年09期

5 劉其輝;蔚芳;康長路;;基于電網(wǎng)電壓定向矢量變換的SVC平衡化補償策略[J];電工技術(shù)學(xué)報;2009年08期

相關(guān)會議論文 前1條

1 姜放;王志強;李國鋒;;三相線電流平衡化補償方法[A];2011年通信與信息技術(shù)新進展——第八屆中國通信學(xué)會學(xué)術(shù)年會論文集[C];2011年

相關(guān)碩士學(xué)位論文 前1條

1 姜放;三相線電流平衡化無功補償技術(shù)研究[D];大連理工大學(xué);2011年

，

本文編號：1922669