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On small signal stability of an AC/DC power system with a hybrid MTDC network

机译:具有混合MTDC网络的AC / DC电力系统的小信号稳定性

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摘要

Multi-terminal HVDC (MTDC) networks are being contemplated for large scale integration of renewable energy sources, as well as for the interconnection of asynchronous AC systems. A hybrid MTDC network that combines line commutated converters (LCCs) and voltage source converters (VSCs) can combine the benefits of both technologies. This paper presents a mathematical model of an AC/DC power system with an embedded hybrid MTDC network interconnection. Small signal stability analysis of the power system is conducted based on the linearization of the model. The impact of VSC controller gains on the dominant modes in the system is investigated. The contributions of the converters and generators to different modes of the system are investigated based on the participation matrix analysis. Auxiliary controllers are applied at the converters for the purpose of damping power oscillations in case of disturbances. The results of small signal stability analysis are validated by time-domain simulations in MATLAB. (C) 2016 Elsevier B.V. All rights reserved.
机译:人们正在考虑将多终端HVDC(MTDC)网络用于可再生能源的大规模集成,以及用于异步AC系统的互连。结合了线路换向转换器(LCC)和电压源转换器(VSC)的混合MTDC网络可以结合两种技术的优势。本文提出了具有嵌入式混合MTDC网络互连的AC / DC电力系统的数学模型。基于模型的线性化,对电力系统进行小信号稳定性分析。研究了VSC控制器增益对系统主导模式的影响。基于参与矩阵分析,研究了转换器和发电机对系统不同模式的贡献。辅助控制器应用于变频器,以在发生干扰时抑制功率振荡。小信号稳定性分析的结果通过MATLAB中的时域仿真得到了验证。 (C)2016 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Electric power systems research》 |2016年第7期|79-88|共10页
  • 作者单位

    KTH Royal Inst Technol, Dept Elect Power & Energy Syst, Tekninkringen 33, S-10044 Stockholm, Sweden;

    KTH Royal Inst Technol, Dept Elect Power & Energy Syst, Tekninkringen 33, S-10044 Stockholm, Sweden;

    Svenska Kraftnat Swedish Natl Grid, Sturegatan 1, S-17224 Sundbyberg, Sweden;

    UOIT, Dept Elect & Comp Engn, Oshawa, ON L1H 7K4, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    AC/DC power system; Hybrid MTDC; LCC; Small signal stability; VSC;

    机译:AC / DC电源系统;混合MTDC;LCC;小信号稳定性;VSC;

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