Analysis of AC-DC System Harmonic Distortion When the Power Substation and the Converter Station are Built Together

OU Lin; WANG Yuhong; LI Xingyuan; ZHANG Gongwang; YANG Dongbin; ZUO Kun

doi:10.13296/j.1001-1609.hva.2014.03.006

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Analysis of AC-DC System Harmonic Distortion When the Power Substation and the Converter Station are Built Together

更新时间：2025-04-26

- Analysis of AC-DC System Harmonic Distortion When the Power Substation and the Converter Station are Built Together
- High VoltageApparatus Vol. 50, Issue 3, Pages: 24-28(2014)
- 作者机构：
  
  1. 四川大学电气信息学院
  2. 陕西省电力公司检修公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.03.006
  CLC： TM711
- Published：2014
- 稿件说明：
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[1]欧林,王渝红,李兴源,张功望,杨东斌,左坤.变电站与换流站合并建站时交直流系统谐波畸变分析[J].高压电器,2014,50(03):24-28.

OU Lin, WANG Yuhong, LI Xingyuan, et al. Analysis of AC-DC System Harmonic Distortion When the Power Substation and the Converter Station are Built Together[J]. High voltageapparatus, 2014, 50(3): 24-28.
[1]欧林,王渝红,李兴源,张功望,杨东斌,左坤.变电站与换流站合并建站时交直流系统谐波畸变分析[J].高压电器,2014,50(03):24-28. DOI： 10.13296/j.1001-1609.hva.2014.03.006.

OU Lin, WANG Yuhong, LI Xingyuan, et al. Analysis of AC-DC System Harmonic Distortion When the Power Substation and the Converter Station are Built Together[J]. High voltageapparatus, 2014, 50(3): 24-28. DOI： 10.13296/j.1001-1609.hva.2014.03.006.

摘要

根据德宝实际直流输电工程在PSCAD/EMTDC中搭建了宝鸡侧交流系统和德宝直流系统的详细模型。计算了当主变与换流变直流偏磁时

交流系统中各种谐波的总谐波畸变率及个单次谐波含有率

并分析了其随电气距离系数K的增大的变化趋势;计算了直流系统整流侧交流母线的功率因数

结果表明其功率因数随着K的增大而略微增大。同时

分析了直流电压和直流电流中谐波含量及其变化趋势

并根据直流电压与直流电流的谐波情况计算了直流系统单极传输功率的各次功率波动值

其中三次功率波动最大

对直流传输功率影响最明显。

Abstract

The detail system model of Baoji-side AC system and Debao HVDC is built in PSCAD/EMTDC based on the real HVDC Transmission Project. The overall harmonic distortion rate and the individual harmonic ratio of various harmonics in AC system are calculated in the condition that the main transformer and converter transformer DC magnetic bias. The change trend of the harmonic distortion rate along with the increase of electrical distance coefficient K is analyzed. The power factor of rectifier side AC bus is calculated. The results show that the power factor is slightly increases with the increase of electrical distance coefficient K. At the same time

harmonic content and its change trend of DC voltage and DC current are analyzed. The power fluctuation value of the unipolar transmission power in DC system is calculated based on the harmonic content and its change trend of DC voltage and DC current

in which the third harmonic power fluctuation value is the largest and its impact on DC transmission power is the most obvious.

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