本文選題：配網(wǎng)重構　切入點：多時段　出處：《華北電力大學(北京)》2017年碩士論文　論文類型：學位論文

【摘要】：能源危機和環(huán)境保護問題日益嚴峻,大力發(fā)展可再生能源勢在必行,但集中式發(fā)電方式下嚴重的棄風、棄光問題也隨之而來。分布式發(fā)電(DG)則能在充分利用用戶側可再生能源的同時避免長距離輸電帶來的損耗,具有廣闊的應用前景。本文針對考慮分布式電源的多時段配電網(wǎng)絡重構問題展開研究,主要包含了以下幾個方面的工作:(1)針對考慮分布式電源的單時段配網(wǎng)重構問題,本文建立了以網(wǎng)損最小為目標函數(shù)的優(yōu)化模型,深入分析了DG出力與網(wǎng)絡重構之間互相影響的情況,為電網(wǎng)公司裝設和運行DG提出了參考建議。(2)針對考慮分布式電源的多時段配電網(wǎng)絡重構問題,本文建立了以網(wǎng)損電量和開關操作總費用最小為目標函數(shù)的優(yōu)化模型,對不同開關操作費用下的重構情況進行了對比分析,為調度運行人員進行網(wǎng)絡重構提供參考。(3)針對多時段配電網(wǎng)絡重構問題的復雜性,為減小算法搜索范圍、提高算法效率,本文提出了一種簡單、快速、有效的方法以獲取各時段對應的待選網(wǎng)絡結構集合。(4)針對考慮DG和負荷隨機性的多時段配電網(wǎng)絡重構問題,本文建立了以某一置信水平下網(wǎng)損和開關操作總費用最小為目標函數(shù)的多時段配電網(wǎng)絡重構機會約束規(guī)劃模型,所得的多時段動態(tài)重構方案不需要依賴準確的DG出力和負荷預測,能以一定概率保證系統(tǒng)的安全經(jīng)濟運行。本文為以上模型設計了相應的遺傳算法,并通過算例計算驗證了所提模型和算法的正確性和有效性。
[Abstract]:The energy crisis and environmental protection are becoming more and more serious, so it is imperative to develop renewable energy. DGs can make full use of renewable energy on the user side while avoiding the loss of long distance transmission. This paper focuses on the reconfiguration problem of multi-time distribution network considering distributed power supply, which mainly includes the following aspects: (1) single time distribution network reconfiguration problem considering distributed power supply. In this paper, an optimization model with minimum network loss as objective function is established, and the interaction between DG output and network reconstruction is deeply analyzed. This paper presents a reference proposal for the installation and operation of DG in power grid companies. (2) aiming at the problem of reconfiguration of multi-time distribution networks considering distributed generation, an optimization model with the minimum power loss and the total switching cost as the objective function is established in this paper. This paper makes a comparative analysis of the reconfiguration situation under different switching operation costs, which provides a reference for the dispatcher to reconfigure the network, aiming at the complexity of the reconfiguration problem of multi-time distribution network, in order to reduce the search scope of the algorithm and improve the efficiency of the algorithm. In this paper, a simple, fast and effective method is proposed to obtain the network structure set for each time period. (4) to solve the problem of multi-time distribution network reconfiguration considering the randomness of DG and load, this paper proposes a simple, fast and effective method. In this paper, an opportunity constraint programming model for multi-time distribution network reconfiguration is established, which takes the minimum network loss and the minimum switching operation total cost as the objective function at a certain confidence level. The proposed multi-period dynamic reconstruction scheme does not depend on accurate DG output and load forecasting and can guarantee the safe and economical operation of the system with a certain probability. This paper designs the corresponding genetic algorithm for the above model. The correctness and validity of the proposed model and algorithm are verified by an example.
【學位授予單位】：華北電力大學(北京)
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM711

【參考文獻】

相關期刊論文 前10條

1 吉興全;劉琪;王成山;于永進;張曉;;基于協(xié)同進化的配網(wǎng)動態(tài)重構算法[J];安徽大學學報(自然科學版);2016年04期

2 易海川;張彼德;王海穎;吳宇;袁國森;呂柔睿;;提高DG接納能力的配電網(wǎng)動態(tài)重構方法[J];電網(wǎng)技術;2016年05期

3 王琛;，

本文編號：1638336