【摘要】：隨著現(xiàn)代電網(wǎng)的發(fā)展,對(duì)配電網(wǎng)自動(dòng)化系統(tǒng)的建設(shè)與應(yīng)用提出了更高的要求。配電網(wǎng)重構(gòu)是配電自動(dòng)化的重要功能之一,配電網(wǎng)重構(gòu)作為一種不需要大量投資就可以實(shí)現(xiàn)對(duì)配電網(wǎng)優(yōu)化的手段,可以提升配電網(wǎng)電能質(zhì)量以及經(jīng)濟(jì)性,同時(shí)確保電力系統(tǒng)的安全穩(wěn)定,具有一定的研究?jī)r(jià)值。DG(Distribution Generation,分布式電源)作為一種小型的獨(dú)立電源與傳統(tǒng)電源相結(jié)合,節(jié)省偏遠(yuǎn)地區(qū)供電投資并提高供電可靠性。分布式電源改變了配電網(wǎng)“開(kāi)環(huán)設(shè)計(jì),閉環(huán)運(yùn)行”的拓?fù)浣Y(jié)構(gòu),因此分布式電源的并入使得傳統(tǒng)的配電網(wǎng)重構(gòu)方法不能有效的應(yīng)用于實(shí)際系統(tǒng),本文對(duì)含分布式電源的配電網(wǎng)靜態(tài)重構(gòu)和動(dòng)態(tài)重構(gòu)進(jìn)行研究,主要工作內(nèi)容如下:(1)介紹幾種典型的分布式電源,從工作原理以及對(duì)配電網(wǎng)潮流計(jì)算、電能質(zhì)量等方面的影響分析,將其按照接口類型的不同劃分為PQ、PI、PV、PQ(V)四種類型,分別建立數(shù)學(xué)計(jì)算模型,為配電網(wǎng)重構(gòu)做出良好的基礎(chǔ)。(2)在配電網(wǎng)靜態(tài)重構(gòu)方面,通過(guò)分析粒子群算法和螢火蟲(chóng)算法各自的優(yōu)缺點(diǎn),將最小生成樹(shù)算法和改進(jìn)的螢火蟲(chóng)與粒子群算法結(jié)合,建立以有功損耗和負(fù)荷均衡指數(shù)最小為目標(biāo)的配電網(wǎng)重構(gòu)模型。以含DG的IEEE33節(jié)點(diǎn)配電網(wǎng)絡(luò)為算例,驗(yàn)證了算法可行性與優(yōu)越性。(3)在配電網(wǎng)動(dòng)態(tài)重構(gòu)方面,考慮到實(shí)際配電網(wǎng)中負(fù)荷變化,將一種基于特性指標(biāo)降維的聚類算法應(yīng)用到負(fù)荷聚類中,將配電網(wǎng)動(dòng)態(tài)重構(gòu)轉(zhuǎn)化成以負(fù)荷聚類中心為負(fù)荷狀態(tài)的配電網(wǎng)靜態(tài)重構(gòu)問(wèn)題。
[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.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM711

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本文編號(hào)：2282495