【作者】 解大琴；

【导师】 陈星莺；

【作者基本信息】 河海大学 ， 电力系统及其自动化， 2007， 硕士

【摘要】 配电网作为发、输电与用户设备的连接环节，其规划设计的水平直接关系到供电的可靠性和经济性，在用户对供电要求提高、供电企业努力提高企业经济效益的今天，配电网规划受到了越来越多的重视。而如何协调解决经济性和可靠性的矛盾一直是配电网规划研究的难点，并且以往都是在完成配电网主网网架的规划后，进行联络线的优化规划，因此很难得到理想的规划方案。换句话说，目前迫切需要进行配电网综合优化规划的研究，为供电企业提供方便的决策依据，这将产生巨大的经济效益和社会意义。本文基于多目标对配电网进行两阶段规划和综合规划研究，主要在以下几个方面开展工作： 首先，分析了联络线对配电网可靠性的影响，提出了计及联络线的配电网综合可靠性指标的计算模型；利用可靠性指标来计算考虑不同负荷类型影响的配电网系统缺电损失，建立了配电网可靠性的经济评价模型。仿真分析证明了其有效性和可行性。 其次，提出了基于模糊满意度的多目标配电网两阶段规划模型。将整个配电网规划分为两个阶段，即网架规划和联络线优化规划，分别以经济性、可靠性和两者综合最优为目标建立模型，并用蚁群算法求解。实例分析表明：多目标规划综合考虑经济性和可靠性之间的相互协调，平衡了两者之间的满意度，因而得到了最佳规划方案。 最后，提出了同时确定配电网的网架结构和联络线分布情况的多目标配电网综合规划模型，并采用蚁群算法求解。更进一步，提出了智能决策联络线方式的多目标配电网综合规划模型。算例比较分析表明多目标规划比单目标规划的总费用会有所改善，更能协调经济性和可靠性之间的关系；而且综合规划比两阶段规划在所有的目标上都会有所改善；智能决策联络线方式比单联络线方式更合理。更多还原

【Abstract】 As the connection between transmission network and consumer facilities, the level of distribution planning directly affects the reliability and economy of distribution system. At present, the request of consumers and the economic benefit of utilities have been both improved. So the planning of distribution has been paid more and more attentions. How to balance the satisfactions of both economy and reliability is a difficult problem in research of distribution planning. More over, the optimization of tie lines is often done after the distribution network planning at before, so it is hard to get a perfect planning. That is to say, the integrated planning of distribution is urgent needed to supply the utility convenient support for decision making and will bring considerable economic benefit and social value. This paper mainly researches on two-stage distribution planning and integrated distribution planning on the basis of multi-objective and mainly includes several aspects as following:First, this paper analyzes the influence on the distribution system reliability index imposed by tie lines. A calculating model is put forward to calculate the integrated reliability indexes of load nodes in the distribution with tie lines. Then, these reliability indexes are used to calculate the outage cost considering different types of loads. A economic evaluation model for the distribution reliability is set up. The validity and feasibility of this method are demonstrated by the simulation analysis.Then, a multi-objective two-stage distribution planning model based on fuzzy satisfaction is put forward. The whole distribution planning is divided into two stages which are the network planning and tie-line optimization. In these two stages, the planning models with three different objective functions are formatted. These three objective functions are optimization of economic cost, reliability cost and both. Ant colony algorithm is applied to resolve the problem. The case analysis shows that multi-objective planning considers the mutual coordination between economy and reliability, balances the satisfaction between the two and gets the best plan.Finally, a multi-objective integrated distribution planning model is put forward, in which network structure and tie-line placement are decided at the same time. The paper also chooses ant colony algorithm to resolve this problem. Furtherly, a multi-objective integrated distribution planning model in which the mode of tie lines is determined by the reliability is put forward. The更多还原