基于IGSO-PSO的含分布式电源的配电网重构研究

发布时间：2018-10-20 07:41

【摘要】：随着现代电网的发展,对配电网自动化系统的建设与应用提出了更高的要求。配电网重构是配电自动化的重要功能之一,配电网重构作为一种不需要大量投资就可以实现对配电网优化的手段,可以提升配电网电能质量以及经济性,同时确保电力系统的安全稳定,具有一定的研究价值。DG(Distribution Generation,分布式电源)作为一种小型的独立电源与传统电源相结合,节省偏远地区供电投资并提高供电可靠性。分布式电源改变了配电网“开环设计,闭环运行”的拓扑结构,因此分布式电源的并入使得传统的配电网重构方法不能有效的应用于实际系统,本文对含分布式电源的配电网静态重构和动态重构进行研究,主要工作内容如下:(1)介绍几种典型的分布式电源,从工作原理以及对配电网潮流计算、电能质量等方面的影响分析,将其按照接口类型的不同划分为PQ、PI、PV、PQ(V)四种类型,分别建立数学计算模型,为配电网重构做出良好的基础。(2)在配电网静态重构方面,通过分析粒子群算法和萤火虫算法各自的优缺点,将最小生成树算法和改进的萤火虫与粒子群算法结合,建立以有功损耗和负荷均衡指数最小为目标的配电网重构模型。以含DG的IEEE33节点配电网络为算例,验证了算法可行性与优越性。(3)在配电网动态重构方面,考虑到实际配电网中负荷变化,将一种基于特性指标降维的聚类算法应用到负荷聚类中,将配电网动态重构转化成以负荷聚类中心为负荷状态的配电网静态重构问题。
[Abstract]:With the development of modern power grid, higher requirements are put forward for the construction and application of distribution network automation system. Distribution network reconfiguration is one of the important functions of distribution automation. Distribution network reconfiguration, as a means to optimize distribution network without a lot of investment, can improve the power quality and economy of distribution network. At the same time, it ensures the safety and stability of power system, and has certain research value. DG (Distribution Generation, distributed power) as a small independent power supply combined with traditional power supply, it can save the investment of power supply in remote areas and improve the reliability of power supply. Distributed generation has changed the topology of "open-loop design and closed-loop operation" of distribution network, so the traditional reconfiguration method of distribution network can not be applied to practical system effectively. In this paper, the static reconfiguration and dynamic reconfiguration of distribution network with distributed generation are studied. The main contents are as follows: (1) introduce several typical distributed generation, from the working principle and power flow calculation of distribution network, Based on the analysis of the influence of power quality and other aspects, it is divided into four types of PQ,PI,PV,PQ (V) according to the different interface types, and the mathematical calculation models are established respectively to make a good foundation for the reconfiguration of distribution network. (2) in the aspect of static reconfiguration of distribution network, By analyzing the merits and demerits of particle swarm optimization (PSO) and firefly (Firefly) algorithm, a distribution network reconfiguration model aiming at the minimum active power loss and load balancing index is established by combining the minimum spanning tree algorithm with the improved Particle Swarm Optimization algorithm. Taking the IEEE33 node distribution network with DG as an example, the feasibility and superiority of the algorithm are verified. (3) in the aspect of dynamic reconfiguration of distribution network, the load variation in the actual distribution network is considered. A clustering algorithm based on characteristic index reduction is applied to load clustering. The dynamic reconfiguration of distribution network is transformed into a static reconfiguration problem in which the load clustering center is the load state.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM711

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