【摘要】：配電網(wǎng)的重構(gòu)是電力系統(tǒng)在正常工作條件下優(yōu)化網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)的一種基礎(chǔ)方法。調(diào)度人員按照現(xiàn)場(chǎng)的實(shí)際運(yùn)行情況通過(guò)對(duì)開(kāi)關(guān)的操作實(shí)現(xiàn)對(duì)配電網(wǎng)結(jié)構(gòu)的調(diào)整,從而達(dá)到一方面可以降低系統(tǒng)有功功率損耗,提升配電網(wǎng)系統(tǒng)的經(jīng)濟(jì)性能;另一方面,可以實(shí)現(xiàn)消除過(guò)載、均衡負(fù)荷以及提升電網(wǎng)可靠性等目標(biāo)。在以減少網(wǎng)絡(luò)有功功率損耗為目標(biāo)的配電網(wǎng)重構(gòu)中,本文主要將二進(jìn)制PSO(粒子群)優(yōu)化算法用到網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)中。在研究二進(jìn)制PSO算法的收斂性過(guò)程中,本文通過(guò)對(duì)粒子群算法的初始種群大小、慣性因子取值等方法來(lái)判斷配電網(wǎng)絡(luò)輻射狀等方法來(lái)達(dá)到加速算法收斂性的目的。通過(guò)對(duì)重慶某城區(qū)配電網(wǎng)模型的算例分析,重構(gòu)后的網(wǎng)絡(luò)損耗為2.5MW,比重構(gòu)前的損耗降低了16.6%,因此本文的模型具有可行性。在以提高可靠性為目標(biāo)的配電網(wǎng)重構(gòu)中,本文主要將改進(jìn)的開(kāi)關(guān)交換算法用到重構(gòu)中,選取系統(tǒng)平均停電持續(xù)時(shí)間SAIDI和系統(tǒng)平均停電次數(shù)SAIFI的綜合權(quán)值作為斷開(kāi)常閉分段開(kāi)關(guān)的選取原則。通過(guò)對(duì)重慶某城區(qū)配電網(wǎng)模型的算例分析,SAIFI降低了7.1%,SAIDI降低了6.42%,F值降低了6.7%,ASAI提高了0.7%。說(shuō)明重構(gòu)后的系統(tǒng)整體的可靠性具有顯著的提高,以可靠性為目標(biāo)的配電網(wǎng)絡(luò)重構(gòu)模型是正確的。
[Abstract]:The reconfiguration of distribution network is a basic method to optimize the network topology under normal working conditions. The dispatcher adjusts the distribution network structure according to the actual operation of the field through the operation of the switch so as to reduce the active power loss of the system and improve the economic performance of the distribution network system on the one hand; On the other hand, the goals of eliminating overload, balancing load and improving the reliability of power system can be achieved. In this paper, binary PSO (particle swarm optimization) algorithm is applied to the network topology in the reconfiguration of distribution network, which aims to reduce the loss of active power in the network. In the process of studying the convergence of binary PSO algorithm, this paper uses the methods of initial population size and inertia factor to judge the radiance of distribution network to accelerate the convergence of the algorithm. Through the example analysis of a distribution network model in Chongqing, the network loss after reconfiguration is 2.5 MW, which is 16.6% lower than that before reconfiguration, so the model in this paper is feasible. In the reconfiguration of distribution network aimed at improving reliability, the improved switching algorithm is mainly used in the reconfiguration. The combined weight values of SAIDI and SAIFI are selected as the selection principle of breaking the normally closed segmented switch, which is based on the system average blackout duration (SAIDI) and the average power outage number (SAIFI) of the system. Based on the analysis of the distribution network model in a certain urban area of Chongqing, the SAIFI decreases 7.1and SAIDI decreases 6.42F and the value of 6.7ASAI increases 0.7. It is shown that the reliability of the reconfigurable system is improved significantly, and the reconfiguration model of distribution network aiming at reliability is correct.
【學(xué)位授予單位】：湖北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM727.2

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本文編號(hào)：2333860