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柔性直流配电系统稳定性及其控制关键问题
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山东理工大学院电气与电子工程学院, 山东省淄博市 255000

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国家自然科学基金资助项目(51807112);山东省高等学校科技计划项目(J18KA019)


Key Issues of Stability and Control in Flexible DC Distribution System
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College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China

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    摘要:

    柔性直流配电系统大多采用电力电子设备与交流系统互联、接纳分布式电源与负荷,呈低惯性弱阻尼特性,同时分布式电源与负荷的随机性波动致使运行具有时变特性,易产生不同频率的振荡甚至失稳现象。文中总结了柔性直流配电系统稳定性分析及控制方面遇到的挑战,指出其多时间尺度与随机特性是技术上面临的主要难题。 通过总结建模、振荡机理与稳定性分析以及稳定控制方面的研究现状,展望了未来在多时间尺度建模与振荡机理、随机扰动稳定性分析以及时变场景鲁棒稳定控制方面的关键问题,为柔性直流配电系统的稳定性研究提供思路。

    Abstract:

    Flexible DC distribution systems mostly use power electronic equipment to interconnect with AC systems and accommodate distributed generators and loads. It has characteristics of low inertia and weak damping, and is easy to induce oscillations and instability with different frequencies by the random fluctuations of distributed generators and loads. This paper analyzes the challenges faced by stability analysis and control of flexible DC distribution system, and points out that its multi-time scale and stochastic characteristics are the main technical problems. By summarizing the research status of modeling, oscillation mechanism, stability analysis and control, the key research issues are prospected, including multi-time scale modeling, oscillation mechanism, stochastic disturbance stability analysis and robust stability control in multiple scenarios. The illuminated general framework is expected to bring more insights for the stability research of flexible DC distribution system.

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彭克,陈佳佳,徐丙垠,等.柔性直流配电系统稳定性及其控制关键问题[J].电力系统自动化,2019,43(23):90-98. DOI:10.7500/AEPS20190320009.
PENG Ke, CHEN Jiajia, XU Bingyin,et al.Key Issues of Stability and Control in Flexible DC Distribution System[J].Automation of Electric Power Systems,2019,43(23):90-98. DOI:10.7500/AEPS20190320009.

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  • 收稿日期:2019-03-20
  • 最后修改日期:2019-10-31
  • 录用日期:2019-09-02
  • 在线发布日期: 2019-10-29
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