基于概率潮流的电力系统支路综合脆弱性分析
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作者单位:

1.南昌航空大学;2.国网江西综合能源服务有限公司

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TM712

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国家自然科学基金资助项目(51567019)


Comprehensive Vulnerability Assessment of Power System Branches Based On Probabilistic Power Flow
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1.Nanchang Hangkong University;2.State Grid Jiangxi Integrated Energy Service CO.LTD

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    摘要:

    风电并网会给电网的稳定性带来冲击,针对风电的不确定性,采用概率潮流算法计算电网支路的综合脆弱性指标。提出改进支路介数描述支路结构脆弱性,引入加权潮流熵描述支路运行状态脆弱性,再把二者加权形成支路综合脆弱性指标,以此描述支路综合脆弱性。在此基础上通过概率潮流计算风电并网情况下的支路综合脆弱性,即概率综合脆弱性。并基于概率综合脆弱性提出了概率综合脆弱熵指标,为风电并网节点的选择提供了依据。利用case39节点系统对所提方法进行仿真研究,结果表明了所提方法的合理性和有效性。

    Abstract:

    The integration of wind power will have shock on the stability of the power system. In view of the uncertainty of wind power, proposing a probabilistic load flow algorithm calculating the comprehensive vulnerability index of the grid branch. The improved branch betweenness is proposed to describe the structural vulnerability of the branch, introducing weighted power flow entropy to describe the operating state vulnerability of the branch. Then, weighted the two to form a comprehensive vulnerability index, evaluating the comprehensive vulnerability index of the branch. On this basis, probabilistic load flow is used to calculate the comprehensive vulnerability of the branch in the case of wind power integration, that is, the probability comprehensive vulnerability. Based on the probabilistic comprehensive vulnerability, the probabilistic comprehensive vulnerability entropy index is proposed, which provides a basis for the selection of grid nodes of wind power integration. Simulation results on the IEEE 39-bus system indicate that the proposed method is reasonable and effective.

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引用本文

程若发,沈梓良,卢艳琴. 基于概率潮流的电力系统支路综合脆弱性分析[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-05-19
  • 最后修改日期:2021-08-30
  • 录用日期:2021-08-31
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