基于直流电流有限时域预测算法的换相失败预防策略

周博昊; 李凤婷; 尹纯亚; 张增强

doi:10.7500/AEPS20190630005

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基于直流电流有限时域预测算法的换相失败预防策略

研制与开发 | 更新时间：2020-07-14

- 基于直流电流有限时域预测算法的换相失败预防策略
- Preventive Strategy for Mitigation of Commutation Failure Based on Finite Time Domain Prediction Algorithm of DC Current
- 电力系统自动化-方正平台 2020年第6期页码：178-185
- 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：
  
  周博昊(1996—)，男，硕士研究生，主要研究方向：交直流系统稳定运行分析与控制。E-mail：1055823727@qq.com
  李凤婷(1965—)，女，通信作者，博士，教授，博士生导师，主要研究方向：电力系统运行控制与保护。E-mail：xjlft2009 @sina.com
  尹纯亚(1994—)，男，博士研究生，主要研究方向：交直流系统稳定运行分析与控制。E-mail：1399132297@qq.com
- 基金信息：
  
  新疆维吾尔自治区科技支疆项目(2017E0277);国网新疆电力有限公司科技项目(SGXJJY00GHJS1900042)
- DOI：10.7500/AEPS20190630005
  中图分类号：
- 收稿日期：2019-06-30，
  
  修回日期：2019-09-20，
  
  网络出版日期：2020-02-18，
  
  纸质出版日期：2020-03-25
- 稿件说明：
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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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