Comparison of Suppression Effect of Different Dynamic Reactive Power Compensation Devices for Transient Overvoltage Caused by HVDC System Faults

LIN Anni; HUANG Yongzhang; LIN Weifang; SUN Huadong; YI Jun

doi:10.14044/j.1674-1757.pcrpc.2020.04.021

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Comparison of Suppression Effect of Different Dynamic Reactive Power Compensation Devices for Transient Overvoltage Caused by HVDC System Faults

更新时间：2024-09-14

- Comparison of Suppression Effect of Different Dynamic Reactive Power Compensation Devices for Transient Overvoltage Caused by HVDC System Faults
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 4, Pages: 116-122(2020)
- 作者机构：
  
  1. 华北电力大学新能源国家重点实验室
  2. 中国电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.04.021
  CLC： TM761.12;TM721.1
- Published：2020，
- 稿件说明：
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[1]林安妮,黄永章,林伟芳,孙华东,易俊.不同动态无功补偿装置对直流系统故障引发送端暂态过电压的抑制效果对比[J].电力电容器与无功补偿,2020,41(04):116-122.

LIN ANNI, HUANG YONGZHANG, LIN WEIFANG, et al. Comparison of Suppression Effect of Different Dynamic Reactive Power Compensation Devices for Transient Overvoltage Caused by HVDC System Faults. [J]. Power capacitor & reactive power compensation, 2020, 41(4): 116-122.
[1]林安妮,黄永章,林伟芳,孙华东,易俊.不同动态无功补偿装置对直流系统故障引发送端暂态过电压的抑制效果对比[J].电力电容器与无功补偿,2020,41(04):116-122. DOI： 10.14044/j.1674-1757.pcrpc.2020.04.021.

LIN ANNI, HUANG YONGZHANG, LIN WEIFANG, et al. Comparison of Suppression Effect of Different Dynamic Reactive Power Compensation Devices for Transient Overvoltage Caused by HVDC System Faults. [J]. Power capacitor & reactive power compensation, 2020, 41(4): 116-122. DOI： 10.14044/j.1674-1757.pcrpc.2020.04.021.

摘要

直流输电系统在发生换相失败、直流闭锁等故障时

会引发送端暂态过电压。本文分别在基于电磁暂态的两区域直流系统算例和基于机电暂态仿真的大电网算例中分析比较了在直流换相失败及闭锁故障时

3种动态无功补偿装置的抑制能力。仿真结果表明

基于电磁暂态的两区域直流算例和基于机电暂态的大电网算例得到的结论基本一致

相互印证

即同步调相机具有更好的暂态过电压抑制能力。最后

通过优化调相机的直轴暂态电抗和直轴暂态时间常数等关键性能参数

能够更好地抑制直流故障导致的送端交流母线的暂态压升。

Abstract

The high-voltage withstand capability of renewable energy units is poor

and the transient overvoltage at the sending end caused by HVDC faults is easily transmitted to the nearby wind farms

leading to wind turbine tripping accidents.In terms of the measures of suppressing transient overvoltage by installing dynamic reactive power compensation devices at the sending end

the suppression effects of commonly used dynamic reactive power compensation devices are compared in a simple two-region system based on electro?magnetic transient simulation.The results show that the synchronous compensator has the best suppression effect on the transient overvoltage of the renewable energy HVDC delivery system.Then

the conclusion of the two-region system is verified in an actual large-scale power grid example based on the electromechanical transient simulation.Finally

the suppression effect of key performance parameters of synchronous condenser on transient overvoltage is discussed.By optimizing the d axis transient reactance and transient time constant

the transient voltage rise can be improved.

关键词

动态无功补偿同步调相机暂态过电压换相失败直流闭锁

Keywords

dynamic reactive power compensationsynchronous condensertransient overvoltagecommutation failureHVDC block

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