Influence of three-phase imbalance and harmonic on line loss of three-phase four-wire low-voltage distribution network

被引：0

作者：

Xie R. ^{[1
]}

Du F. ^{[1
]}

Cheng X. ^{[2
]}

Zhou Q. ^{[2
]}

Xu F. ^{[2
]}

机构：

[1] Guiyang Xifeng Power Supply Bureau of Guizhou Power Grid, Guiyang

[2] School of Electrical Engineering, Sichuan University, Chengdu

来源：

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2020年 / 48卷 / 21期

基金：

中国国家自然科学基金;

关键词：

Chroma 6590 programmable AC source; Harmonic; Line loss; Matlab/Simulink; Three-phase imbalance;

D O I：

10.19783/j.cnki.pspc.191561

中图分类号：

学科分类号：

摘要：

Aiming at problem of line loss in a three-phase four-wire low voltage distribution network, this paper presents a method for calculating line loss under the action of composite power quality and compares it with that under the action of single power quality. First, the line loss caused by three-phase imbalance is deduced. Secondly, the line loss under harmonic condition is derived according to the superposition principle. Then the line losses under the combined action of the two power qualities are comprehensively considered and derived, and the line losses under the combined action of the two power qualities are compared by the symmetric component method. The results show that the three-phase imbalance aggravates the harmonic loss, that is, the line loss when the harmonic and the three phase unbalance exist together is greater than the sum of the line loss when they exist separately. Finally, the Matlab/Simulink simulation tool and chroma 6590 programmable AC source experiment are used to test each part and verify the correctness of the theoretical derivation. © 2020, Power System Protection and Control Press. All right reserved.

引用

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页码：22 / 30

页数：8

共 30 条

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