本文選題：主動配電網(wǎng) + 交替方向乘子法　； 參考：《華北電力大學(xué)(北京)》2017年碩士論文

【摘要】：近年來,隨著全球化石能源的急劇消耗以及新能源技術(shù)的快速發(fā)展,各種各樣的分布式能源在配電網(wǎng)中的滲透率與日俱增,傳統(tǒng)意義上的配電網(wǎng)正逐漸演化為具有調(diào)度控制靈活、用戶交互性高、能源利用率高等特征的主動配電網(wǎng)。分布式能源的大規(guī)模滲透對于配電網(wǎng)的電能質(zhì)量、運行成本等許多方面都產(chǎn)生了很大影響。所以,為了實現(xiàn)主動配電網(wǎng)中各類分布式能源協(xié)調(diào)、高效利用,改善配電網(wǎng)的優(yōu)化調(diào)度方法是一個迫在眉睫的問題。為了解決分布式能源滲透率提高后,傳統(tǒng)集中式優(yōu)化調(diào)度面臨的優(yōu)化目標(biāo)選擇不靈活、計算效率低、對計算存儲和通信等硬件設(shè)備要求高等一系列問題,本文提出了一種基于交替方向乘子法(alternating direction method of multipliers,ADMM)的主動配電網(wǎng)分布式多目標(biāo)優(yōu)化調(diào)度方法,不同分區(qū)可以根據(jù)實際情況與需求選擇不同的優(yōu)化目標(biāo),以期實現(xiàn)靈活、高效的主動配電網(wǎng)優(yōu)化調(diào)度。首先建立主動配電網(wǎng)分布式多目標(biāo)優(yōu)化調(diào)度模型,包括實時與日前調(diào)度兩部分,其中各分區(qū)根據(jù)實際情況分別在運行成本最小、可再生分布式電源消納率最高、電能質(zhì)量最好等之中選擇一種作為優(yōu)化目標(biāo)。然后將約束條件進(jìn)行凸松弛并引入輔助變量對原模型進(jìn)行數(shù)學(xué)變換,從而應(yīng)用交替方向乘子法對相鄰分區(qū)間進(jìn)行交替迭代,實現(xiàn)并行計算。另外,采取異步迭代的計算流程進(jìn)一步提高計算效率,并應(yīng)用最優(yōu)流模式法來解決可能出現(xiàn)的弱環(huán)網(wǎng)問題,改善了該方法的適用性。本文基于改進(jìn)的PGE-69節(jié)點配電系統(tǒng)算例對所提模型進(jìn)行了仿真驗證,通過在實時調(diào)度與日前調(diào)度兩種情況下,分別與傳統(tǒng)的集中式優(yōu)化調(diào)度方法以及其它的分布式優(yōu)化方法進(jìn)行對比。仿真結(jié)果表明,本文所提方法在實現(xiàn)主動配電網(wǎng)多區(qū)域、多目標(biāo)的優(yōu)化調(diào)度方面能夠取得比較高的綜合滿意度與計算效率。
[Abstract]:In recent years, with the rapid consumption of fossil energy in the world and the rapid development of new energy technology, the permeability of all kinds of distributed energy in the distribution network is increasing. The traditional distribution network is gradually evolving into an active distribution network with the characteristics of flexible dispatching control, high user interaction and high energy efficiency. The large-scale penetration of distributed energy has great influence on power quality and operation cost of distribution network. Therefore, in order to realize the coordination and efficient utilization of all kinds of distributed energy in the active distribution network, it is an urgent problem to improve the optimal dispatching method of the distribution network. In order to solve a series of problems such as inflexible choice of optimization target, low computing efficiency and high requirement for hardware equipment such as computing storage and communication, traditional centralized optimal scheduling is faced with a series of problems after increasing distributed energy permeability. In this paper, a distributed multi-objective optimal dispatching method for active distribution network based on alternative direction method of multiplier method is proposed. Different districts can choose different optimization objectives according to the actual situation and demand, in order to achieve flexibility. Efficient optimal dispatching of active distribution network. First of all, the distributed multi-objective optimal dispatching model of active distribution network is established, including real-time and pre-day dispatch. According to the actual situation, each district has the lowest operating cost and the highest absorption rate of renewable distributed power supply. One of the best power quality optimization objectives is chosen. Then the constraint condition is convex relaxed and the auxiliary variable is introduced to transform the original model. Then the alternating direction multiplier method is used to iterate the adjacent sub-interval alternately and the parallel computation is realized. In addition, the asynchronous iterative computing flow is adopted to further improve the computational efficiency, and the optimal flow mode method is applied to solve the possible weak loop network problems, which improves the applicability of the method. In this paper, the proposed model is simulated and verified based on the improved PGE-69 node distribution system. In the case of real-time scheduling and pre-day scheduling, the proposed model is simulated and verified. Compared with the traditional centralized optimal scheduling method and other distributed optimization methods. The simulation results show that the proposed method can achieve high comprehensive satisfaction and computational efficiency in the realization of multi-area and multi-objective optimal dispatching of active distribution network.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM73

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本文編號：1977419