基于动态规划法的配电网联络线优化研究

发布时间：2018-07-22 20:05

【摘要】：配电网闭环设计,开环运行。一般将配电网络规划分成两阶段来完成:在负荷预测和变电站规划完成的基础上,根据变电站的供电范围以及该范围内的负荷情况,形成辐射型供电网络;在辐射型网络已形成的基础上,确定联络线的位置。本文所做的工作是在辐射型配电网络已经形成的基础上应用动态规划法进行联络线优化的研究。首先对配电网联络线规划的国内外研究现状进行了简要综述,分析了配电网的接线方式和可靠性评估方法,介绍了各种方法的适用场合及优缺点。之后对现有配电网联络线优化规划的数学模型进行分析,在此基础上综合考虑经济性与可靠性,建立了以联络线投资维护费用和停电损失费用最小为目标的数学模型。并以最长供电路径小于初始线路中最长支路的长度为约束条件。最后将联络线的优化看成一个多阶段决策问题,从而建立了与动态规划的桥梁,以联络线的数目为阶段,联络线的位置为状态,应用动态规划法求解配电网联络线优化问题。通过对IEEE33节点进行算例分析,对课题中用到的相关理论和算法进行了验证。
[Abstract]:Distribution network closed-loop design, open-loop operation. The distribution network planning is generally divided into two stages: on the basis of load forecasting and substation planning, the radiation power supply network is formed according to the power supply range of the substation and the load situation within the scope; Based on the formation of the radiative network, the location of the tie line is determined. The work of this paper is to study the optimization of tie line by using dynamic programming method on the basis of the formation of radiative distribution network. Firstly, the research status of tie-line planning in distribution network at home and abroad is briefly summarized, the connection mode and reliability evaluation method of distribution network are analyzed, and the applicable situation, advantages and disadvantages of these methods are introduced. Based on the analysis of the existing mathematical model of tie-line optimization planning, a mathematical model with minimum investment and maintenance cost and blackout loss cost is established on the basis of comprehensive consideration of economy and reliability. The constraint condition is that the longest power supply path is less than the length of the longest branch in the initial line. Finally, the optimization of tie-line is regarded as a multi-stage decision-making problem, and the bridge with dynamic programming is established. The dynamic programming method is applied to solve the tie-line optimization problem of distribution network, taking the number of tie-lines as the stage and the location of the tie-line as the state. Through the analysis of the IEEE 33 node, the related theories and algorithms used in the subject are verified.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM715

【相似文献】