Preventive Strategy for Mitigation of Commutation Failure Based on Finite Time Domain Prediction Algorithm of DC Current

Bohao ZHOU; Fengting LI; Chunya YIN; Zengqiang ZHANG

doi:10.7500/AEPS20190630005

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Preventive Strategy for Mitigation of Commutation Failure Based on Finite Time Domain Prediction Algorithm of DC Current

Application Research | 更新时间：2020-07-14

- Preventive Strategy for Mitigation of Commutation Failure Based on Finite Time Domain Prediction Algorithm of DC Current
- Automation of Electric Power Systems Issue 6, Pages: 178-185(2020)
- 作者机构：
  
  1. 可再生能源发电与并网技术教育部工程研究中心(新疆大学)，新疆维吾尔自治区乌鲁木齐市 830047
  2. 国网新疆电力有限公司经济技术研究院，新疆维吾尔自治区乌鲁木齐市 830011
- 作者简介：
- 基金信息：
- DOI：10.7500/AEPS20190630005
  CLC：
- Received：30 June 2019，
  
  Revised：2019-09-20，
  
  Published Online：18 February 2020，
  
  Published：25 March 2020
- 稿件说明：
移动端阅览
周博昊,李凤婷,尹纯亚等.基于直流电流有限时域预测算法的换相失败预防策略[J].电力系统自动化,2020,44(06):178-185.

ZHOU Bohao,LI Fengting,YIN Chunya,et al.Preventive Strategy for Mitigation of Commutation Failure Based on Finite Time Domain Prediction Algorithm of DC Current[J].Automation of Electric Power Systems,2020,44(06):178-185.
周博昊,李凤婷,尹纯亚等.基于直流电流有限时域预测算法的换相失败预防策略[J].电力系统自动化,2020,44(06):178-185. DOI： 10.7500/AEPS20190630005.

ZHOU Bohao,LI Fengting,YIN Chunya,et al.Preventive Strategy for Mitigation of Commutation Failure Based on Finite Time Domain Prediction Algorithm of DC Current[J].Automation of Electric Power Systems,2020,44(06):178-185. DOI： 10.7500/AEPS20190630005.

摘要

针对故障暂态期间直流电流精确预测困难的问题，建立了含平波电抗器的直流线路暂态数学模型。计及暂态期间换相角变化的影响，提出一种直流电流变化量的预测方法，可准确预测暂态期间的直流电流变化。构建了基于换相期间直流电流变化量的换相失败预测判据，以实现首次换相失败的预测判别，并提出一种可有效预防首次换相失败的控制策略。基于PSCAD/EMTDC仿真平台搭建了CIGRE直流标准测试模型，不同故障情况下的仿真结果验证了所提方法及控制策略的有效性。

Abstract

In order to solve the difficulties in the accurate prediction of DC current during fault transient period

a DC line transient mathematical model with flat wave reactor is presented. Considering the change of overlap angle during transient period

a prediction method of DC current variation is proposed for the accurate prediction of DC current variation. And a commutation failure prediction criterion based on DC current variation during commutation is constructed to realize the prediction of the first commutation failure. Meanwhile

a control strategy which can effectively prevent the first commutation failure is proposed. The DC system model of CIGRE high voltage direct current (HVDC) benchmark model is built based on PSCAD/EMTDC simulation platform. The simulation results of different fault situations reveal that the proposed method and control strategy are effective.

关键词

Keywords

references

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