含分布式能源的配电网极端可接入容量估算研究

发布时间：2018-02-01 07:09

本文关键词： 分布式能源配电网可接入容量估算　出处：《电网与清洁能源》2016年09期 　论文类型：期刊论文

【摘要】：含分布式能源的大规模接入,通常依靠灵活的网络结构和较大的容量裕度来应对配电网的不确定性,以保证电力系统的安全可靠性。采用传统方法对配电网可接入容量估算时,难以处理各类不确定因素,存在估算误差大的问题。提出一种基于模糊层次分析的含分布式能源的含分布式能源的配电网极端可接入容量估算方法。该方法先结合增量法对含分布式能源的配电网极端可接入容量估算进行评价,对影响可接入容量估算的各种不确定性因素进行分析,组建含分布式能源的配电网分析模型和配电网最大准入容量模型,并依据其物理意义组建概率分布函数,求解不确定性因素的期望值和方差,在此基础上组建配电网极端可接入容量估算的指标体系,结合层次分析与灰色理论构造含分布式能源的配电网极端可接入容量估算模型。实验结果表明,所提方法能够有效提升含分布式能源的配电网极端可接入容量估算精度,且估算效率较优。
[Abstract]:Large scale access with distributed energy usually depends on flexible network structure and large capacity margin to deal with the uncertainty of distribution network. In order to ensure the safety and reliability of power system, it is difficult to deal with all kinds of uncertain factors when the traditional method is used to estimate the accessible capacity of distribution network. In this paper, a method of estimating the extreme accessible capacity of distribution network with distributed energy source based on fuzzy analytic hierarchy process is proposed. The method combines incremental method to estimate the extreme accessible capacity of distribution network with distributed energy source. The extreme access capacity of distribution network is evaluated. Based on the analysis of various uncertain factors affecting the estimation of accessible capacity, the distribution network analysis model with distributed energy and the maximum access capacity model of distribution network are established, and the probability distribution function is established according to its physical meaning. Based on the expectation and variance of uncertain factors, an index system for estimating the extreme accessible capacity of distribution network is established. Combined with AHP and grey theory, an extreme accessible capacity estimation model of distribution network with distributed energy is constructed. The experimental results show that. The proposed method can effectively improve the accuracy of the estimation of the extreme accessible capacity of the distribution network with distributed energy, and the estimation efficiency is better.
【作者单位】：上海电机学院电气学院;
【基金】：国家自然科学基金资助项目(61374136) 上海市教委创新项目(12YZ186,14YZ157,13YZ139) 上海市自然科学基金项目(12ZR1411800)~~
【分类号】：TM727
【正文快照】： 近年来,随着我国社会主义市场经济的不断发展,人们对电力系统的要求也在不断提升[1-2]。在此背景下,含分布式能源的大规模接入,通常依靠灵活的网络结构和较大的容量裕度来应对配电网的不确定性,以保证电力系统的安全可靠性[3-4]。因此,对含分布式能源的配电网极端可接入容量进

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