文章摘要
李岩,滕云,冷欧阳,等.多端柔性直流互联的交直流电力系统静态安全分析[J].电力系统自动化. DOI: 10.7500/AEPS20180910006.
LI Yan,TENG Yun,LENG Ouyang, et al.Static Security Analysis of AC/DC Power System with Multi-terminal Fexible DC[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20180910006.
多端柔性直流互联的交直流电力系统静态安全分析
Static Security Analysis of AC/DC Power System with Multi-terminal Fexible DC
DOI:10.7500/AEPS20180910006
关键词: 多端直流  电压源换流器  交直流混联系统  静态安全分析  
KeyWords: multi-terminal direct current  voltage source converter  hybrid ac/dc power system  static security analysis.
上网日期:2019-04-12
基金项目:
作者单位E-mail
李岩 沈阳工业大学 menggongliyan@163.com 
滕云 沈阳工业大学 tengyun@sut.edu.cn 
冷欧阳 国网内蒙古东部电力有限公司 175881948@qq.com 
王毅 南瑞集团国网电力科学研究院有限公司 wongyee@outlook.com 
摘要:
      含电压源换流器的多端直流系统在工作原理及控制方式上与常规直流存在本质区别,现有静态安全分析无法直接对含多端柔性直流的交直流系统分析计算。本文以传统交流电网静态安全分析为基础,提出了多端柔性直流混联系统的交直流静态安全分析计算框架,阐述了功能实现方法及采用的关键技术。在预想故障计算中考虑了交直流电网运行条件变化情况,保证计算结果与实际电网运行状态一致,提高了静态安全分析计算准确性。通过构建含四端柔直的交直流混联系统仿真模型,验证算法的有效性和实用性。#$NL关键词:多端直流; 电压源换流器; 交直流混联系统; 静态安全分析;
Abstract:
      The structural features and control mode of the multi-terminal DC system with voltage source converter (VSC-MTDC) are essentially different from the conventional DC system with line commutated converter. The traditional static secu-rity analysis must meet the requirements of the application. The paper proposes a calculation framework for AC/DC static security analysis of VSC-MTDC/AC hybrid system, and expounds the functional realization method and key technologies adopted. In the calculation of expected faults, the change of operation conditions of AC and DC power grids is taken into account to ensure that the calculation results are consistent with the actual operation conditions of power grids, which improves the accuracy of static safety analysis and calculation. The hybrid AC/DC system with four-terminal VSCs is adopted for the validation of the algorithm. It confirm that the proposed method practical and effective.#$NLKeywords: multi-terminal direct current; voltage source converter; hybrid ac/dc power system; static security analysis.
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