發(fā)布時間：2018-05-31 03:58

  本文選題：電力系統(tǒng) + 參考電網(wǎng)�。� 參考：《山東大學(xué)》2015年碩士論文

【摘要】：電網(wǎng)規(guī)劃是保證電力系統(tǒng)可靠運行的前提。隨著可再生能源并網(wǎng)發(fā)電的快速發(fā)展,以及大規(guī)模電網(wǎng)互聯(lián)的建設(shè)和市場機制的推進,電網(wǎng)規(guī)劃面臨更嚴(yán)峻的挑戰(zhàn)。參考電網(wǎng)綜合考慮了系統(tǒng)運行與年輸電成本,且保持電力系統(tǒng)可靠性的一致性水平,將輸電容量作為待求量,因此能夠決策電網(wǎng)的最優(yōu)輸電容量。參考電網(wǎng)能夠提供一套對現(xiàn)有電網(wǎng)進行客觀評估的標(biāo)準(zhǔn),它能對投資成本和阻塞成本進行最優(yōu)量化；通過對比實際線路建設(shè)容量與參考電網(wǎng)相應(yīng)線路容量,可以發(fā)現(xiàn)線路的容量裕度是否合理�？紤]未來電網(wǎng)的發(fā)展,結(jié)合負(fù)荷預(yù)測和電源規(guī)劃,以參考電網(wǎng)為依托,可以實現(xiàn)電網(wǎng)漸進規(guī)劃策略。該策略針對參考電網(wǎng)對某一時間段實際電網(wǎng)網(wǎng)架結(jié)構(gòu)的評估研究所發(fā)現(xiàn)的問題,對考慮擴建、再建的若干候選方案,研究建立動態(tài)的、考慮過程化的,在滿足電網(wǎng)一定安全、可靠水平下的最優(yōu)輸電能力的優(yōu)化決策模型,給出不同情景下輸電供給和需求達到平衡時的值,使電網(wǎng)逐步趨于滿足長期邊際成本,即社會效益最大化下的輸電能力。對于大規(guī)模電網(wǎng)來說,參考電網(wǎng)是一個復(fù)雜的優(yōu)化問題。由于需要得出每條線路的最優(yōu)建設(shè)容量,并且需要考慮多種事故狀態(tài)的影響,優(yōu)化問題的待求變量、約束條件數(shù)量龐大,求解代價大。因此,本文提出將奔德斯分解的方法應(yīng)用到參考電網(wǎng)模型的求解中。為了符合奔德斯分解對模型的要求,本文在原始參考電網(wǎng)模型的目標(biāo)函數(shù)中添加了考慮斷線事故引起的電網(wǎng)操作費用,然后分別構(gòu)建奔德斯主問題與子問題：將正常狀態(tài)下求解最優(yōu)發(fā)電調(diào)度與最優(yōu)線路建設(shè)容量的優(yōu)化問題作為主問題,將事故狀態(tài)下操作費用最小化的優(yōu)化問題作為子問題,兩者通過奔德斯割關(guān)聯(lián)在一起,實現(xiàn)原本規(guī)模龐大問題分解與協(xié)調(diào)的優(yōu)化計算。根據(jù)模型的實際情況,考慮到子問題數(shù)量眾多且約束存在大量冗余的特點,采取一系列縮減計算規(guī)模的策略以提高算法求解效率：利用功率分配因子可以對事故狀態(tài)的潮流進行預(yù)估,在此基礎(chǔ)上可以不經(jīng)過潮流計算,實現(xiàn)對線路潮流與線路容量的比較分析,從而實現(xiàn)對線路或者約束條件關(guān)鍵集的篩選；提出了主導(dǎo)事件篩選策略,該策略顯著縮減了有效預(yù)想事件的數(shù)量,從而減少了需要求解的子問題的數(shù)量,極大提高了算法整體的運行效率；提出了子問題支路潮流約束的縮減策略,在進行子問題求解時考慮只添加越限線路的潮流約束,從而減少了子問題約束條件的數(shù)量,提高了子問題求解的速度。經(jīng)算例驗證這些策略能顯著提高運算效率。
[Abstract]:Power network planning is the premise to ensure the reliable operation of power system. With the rapid development of renewable energy grid power generation, the construction of large-scale power grid interconnection and the promotion of market mechanism, power grid planning is facing more serious challenges. Considering the system operation and the annual transmission cost and keeping the consistency level of the power system reliability, the transmission capacity is regarded as the required quantity, so the optimal transmission capacity of the power network can be determined. The reference grid can provide a set of objective evaluation criteria for the existing grid, it can optimize the investment cost and congestion cost, by comparing the actual line construction capacity with the corresponding line capacity of the reference grid, It can be found that the line capacity margin is reasonable. Considering the future development of power grid, combined with load forecasting and power supply planning, and relying on reference grid, the progressive planning strategy of power grid can be realized. This strategy aims at the problems found by the research on the evaluation of the actual grid structure in a certain period of time. For some candidate schemes considering the expansion and reconstruction, the dynamic and procedural methods are studied to meet the security of the power network. The optimal decision-making model of the optimal transmission capacity at reliable level is given, and the value of transmission supply and demand equilibrium is given under different scenarios, which makes the power network gradually meet the long-term marginal cost, that is, the transmission capacity under the maximization of social benefits. For large scale power grid, reference grid is a complex optimization problem. Due to the need to obtain the optimal construction capacity of each line and the need to consider the influence of various accident states, the number of constraints and the cost of solving the optimization problem are large. Therefore, the method of Bandes decomposition is applied to the solution of reference grid model. In order to meet the requirements of Bundes decomposition model, this paper adds the operation cost of power network to the objective function of the original reference power network model, which takes into account the power network operation cost caused by the breakage accident. Then the main problem and sub-problem are constructed respectively: the optimization problem of optimal generation scheduling and optimal line construction capacity under normal condition is taken as the main problem, and the optimization problem of minimizing the operating cost in the state of accident is taken as the sub-problem. The two methods are related to each other by Bandes' cutting to realize the optimization calculation of the decomposition and coordination of the original large scale problems. According to the actual situation of the model, considering the large number of subproblems and the large number of constraints, A series of strategies are adopted to reduce the calculation scale to improve the efficiency of the algorithm. The power allocation factor can be used to estimate the power flow of the accident state, and on this basis, the power flow can be calculated without power flow. Through the comparison and analysis of line power flow and line capacity, the selection of key sets of line or constraint conditions is realized, and a dominant event selection strategy is proposed, which significantly reduces the number of effective expected events. Thus, the number of sub-problems needed to be solved is reduced, and the overall running efficiency of the algorithm is greatly improved. Thus, the number of constraint conditions is reduced and the speed of solving subproblems is improved. Examples show that these strategies can significantly improve the computational efficiency.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM715

【共引文獻】

相關(guān)期刊論文 前10條

1 肖燕 ,奚杰 ,陽薇;遺傳算法在電網(wǎng)規(guī)劃中的研究與應(yīng)用[J];華北電力技術(shù);2004年06期

2 張守一;葛新權(quán);張真真;;把沙漠建成太陽能發(fā)電的基地[J];華北電力技術(shù);2010年02期

3 李雙濤;任建文;周明;徐巖;;考慮二次規(guī)劃因素的電網(wǎng)規(guī)劃方法[J];華北電力大學(xué)學(xué)報(自然科學(xué)版);2007年01期

4 靳靜;艾芊;;我國風(fēng)電場建設(shè)及運行現(xiàn)狀評估與發(fā)展前景研究[J];華東電力;2007年08期

5 楊濱;劉東;翁嘉明;陸融;;網(wǎng)絡(luò)重構(gòu)中基于配電網(wǎng)拓?fù)涮卣鞯母倪M遺傳算法[J];華東電力;2009年05期

6 張瑞明;張新燕;;含風(fēng)電場的系統(tǒng)電壓穩(wěn)定性分析[J];華東電力;2009年09期

7 周霞;胡朝陽;楊衛(wèi)東;祝瑞金;楊增輝;李威;沈超;;大規(guī)模風(fēng)電接入對華東電網(wǎng)CPS頻率考核指標(biāo)的影響[J];華東電力;2011年11期

8 孫嘉;高亮;陳磊;紀(jì)元;寧科;宋杰;;大型風(fēng)電場接入輸電網(wǎng)的系統(tǒng)穩(wěn)定性研究[J];華東電力;2012年05期

9 張曉安;;我國太陽能光伏利用的現(xiàn)狀、存在問題及其對策[J];合肥工業(yè)大學(xué)學(xué)報(社會科學(xué)版);2009年06期

10 賈志東;許志海;;電力工業(yè)與環(huán)境的協(xié)調(diào)發(fā)展[J];環(huán)境技術(shù);2008年01期

相關(guān)博士學(xué)位論文 前10條

1 王敏;分布式電源的概率建模及其對電力系統(tǒng)的影響[D];合肥工業(yè)大學(xué);2010年

2 錢峰;典型FACTS裝置在電網(wǎng)中接入點、容量及類型選擇方法研究[D];中國電力科學(xué)研究院;2009年

3 崔明勇;微網(wǎng)多目標(biāo)優(yōu)化運行及控制策略研究[D];華北電力大學(xué)（北京）;2011年

4 馬金玉;中國地面太陽輻射長期變化特征及短期預(yù)報方法研究[D];南京信息工程大學(xué);2011年

5 易仕敏;電力市場和節(jié)能調(diào)度環(huán)境下電力系統(tǒng)調(diào)度與安全問題的研究[D];華南理工大學(xué);2011年

6 崔楊;大規(guī)模風(fēng)電場群聯(lián)網(wǎng)的源網(wǎng)協(xié)調(diào)性研究[D];華北電力大學(xué);2011年

7 王靖然;輸電網(wǎng)優(yōu)化規(guī)劃策略與安全價值評估[D];天津大學(xué);2011年

8 孟曉芳;基于虛擬技術(shù)的農(nóng)村電力網(wǎng)規(guī)劃方法研究[D];沈陽農(nóng)業(yè)大學(xué);2011年

9 李艷君;擬生態(tài)系統(tǒng)算法及其在工業(yè)過程控制中的應(yīng)用[D];浙江大學(xué);2001年

10 李亞男;電力系統(tǒng)智能無功優(yōu)化及準(zhǔn)實時無功/電壓控制的研究[D];華北電力（北京）大學(xué);2002年

，

本文編號：1958193