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基于加权分布熵的配电网电动汽车并网运行风险分析
作者:
作者单位:

1.智慧能源工程技术研究中心,华南理工大学电力学院,广东省广州市 510640;2.广东电网有限责任公司, 广东省广州市 510600;3.广州市奔流电力科技有限公司,广东省广州市 510700

摘要:

针对电动汽车负荷接入配电网的运行风险分析问题,提出带有放大系数的损失严重度;以分布熵来量度配电网状态变量分布不确定性引起的风险,利用损失严重度对分布熵进行加权以建立加权分布熵,基于加权分布熵建立了电压风险指标和潮流风险指标;以元件重要度对加权分布熵进行加权求和来评估网络的电压风险和潮流风险,并综合2类风险建立了配电网运行风险综合评估指标。最后,以接入风电和光伏的改进IEEE 33节点配电系统为例,通过动态概率潮流仿真计算分析了加权分布熵相对于传统风险指标的优越性以及运行风险综合评估指标的合理性,并研究了运行风险随电动汽车负荷的接入位置和容量的变化情况,从而验证了所提指标和模型的有效性。

关键词:

基金项目:

国家自然科学基金资助项目(51777077)。

通信作者:

作者简介:

杨景旭(1996—),男,通信作者,硕士研究生,主要研究方向:智能电网运行与分析。E-mail: 3108043591@qq.com
羿应棋(1990—),男,博士研究生,主要研究方向:配电网可靠性与规划、新能源及微电网。E-mail: yi_yingqi@foxmail.com
张勇军(1973—),男,教授,博士生导师,主要研究方向:电力系统无功规划与电压控制、能源互联网的优化运行等。E-mail: zhangjun@scut.edu.cn


Operation Risk Analysis of Electric Vehicle Integrated to Distribution Network Based on Weighted Distribution Entropy
Author:
Affiliation:

1.Research Center of Smart Energy Technology, School of Electrical Power, South China University of Technology, Guangzhou 510640, China;2.Guangdong Power Grid Co., Ltd., Guangzhou 510600, China;3.Guangzhou Power Electrical Engineering Technology Co., Ltd., Guangzhou 510700, China

Abstract:

Aiming at analysis on the operation risk of the electric vehicle integrated to the distribution network, the index of loss severity with amplification factor is proposed, and the distribution entropy is used to measure the risk caused by the distribution uncertainty of the state variables of the distribution network. By weighting the distribution entropy with loss severity, the weighted distribution entropy (WDE) is established, based on which the voltage risk index and the load-flow risk index are established. The weighted sum of WDE is calculated according to the component importance, so as to evaluate the voltage risk and the load-flow risk of the network. Taking into account both types of risks, a comprehensive set of indices is constructed to evaluate the operation risk of distribution networks. Finally, simulation studies are conducted on an improved IEEE 33-node distribution system with wind power and photovoltaic accessed, and the superiority of WDE over traditional risk indices and the rationality of the comprehensive index are analyzed by the dynamic probabilistic load flow simulation. In addition, the variation of the operation risk with the access location and capacity of electric vehicle load are studied. The effectiveness of the proposed indices and models is verified through the simulation studies.

Keywords:

Foundation:
This work is supported by National Natural Science Foundation of China (No. 51777077).
引用本文
[1]杨景旭,羿应棋,张勇军,等.基于加权分布熵的配电网电动汽车并网运行风险分析[J].电力系统自动化,2020,44(5):171-179. DOI:10.7500/AEPS20190303007.
YANG Jingxu, YI Yingqi, ZHANG Yongjun, et al. Operation Risk Analysis of Electric Vehicle Integrated to Distribution Network Based on Weighted Distribution Entropy[J]. Automation of Electric Power Systems, 2020, 44(5):171-179. DOI:10.7500/AEPS20190303007.
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  • 收稿日期:2019-03-03
  • 最后修改日期:2019-07-05
  • 录用日期:
  • 在线发布日期: 2020-03-08
  • 出版日期:
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