本文選題：風電場 + 多目標�。� 參考：《華北電力大學》2014年碩士論文

【摘要】：風電作為新興的可再生能源,對于緩解能源危機具有重大意義,近年來得到飛速發(fā)展。風電出力本身特有的波動性和間歇性,給電網(wǎng)帶來更多的潮流波動,成為電網(wǎng)規(guī)劃階段必須考慮的不確定性因素。抽水蓄能電站作為提高電網(wǎng)接納風電能力的主要措施之一,研究抽水蓄能電站規(guī)劃方案的選擇和建設次序是電網(wǎng)規(guī)劃的一個重要方面。因此,研究大規(guī)模風電接入下的電網(wǎng)規(guī)劃方法具有重要的學術(shù)和工程實用價值。 傳統(tǒng)電網(wǎng)規(guī)劃模型將風電場出力劃分為幾個典型運行場景,很難將風電場所有的運行情況均考慮在內(nèi)�，F(xiàn)有的基于機會約束的規(guī)劃模型較少,且目標函數(shù)只有投資成本,只能根據(jù)經(jīng)驗設置合理的置信水平來反應規(guī)劃方案可靠性,不能對可靠性水平進行量化。為此,本文采用機會約束規(guī)劃模型,以支路不過負荷概率反應風電出力波動性對電網(wǎng)的影響,并引入電力期望不足目標函數(shù)量化可靠性水平。 首先,本文給出了概率直流潮流計算中涉及到的相關(guān)概率統(tǒng)計理論,使用基于半不變量法和Gram-Charlier級數(shù)的概率直流潮流計算方法計算支路有功概率密度函數(shù),用該方法與蒙特卡洛方法對算例進行計算,計算結(jié)果表明該方法精度符合要求且計算速度快；接著給出了點估計法計算電力期望不足的方法,并對IEEE24節(jié)點測試系統(tǒng)進行計算,計算結(jié)果表明該方法計算速度快,適合在規(guī)劃模型中重復計算。 其次,本文以支路不過負荷概率為約束條件,分別以投資成本最小和電力不足期望最小為單一目標函數(shù),通過模糊隸屬度函數(shù)構(gòu)建滿意度指標作為評價函數(shù),提出了考慮支路故障、負荷波動、風電場有功出力不確定性的輸電系統(tǒng)多目標機會約束規(guī)劃模型。采用差分進化算法對IEEE24節(jié)點測試系統(tǒng)進行求解,驗證了提出的電網(wǎng)規(guī)劃模型的有效性,為含有大規(guī)模風電場的輸電系統(tǒng)規(guī)劃問題提供了一種較好的解決思路。 最后,針對抽水蓄能電站的特點及其對電網(wǎng)的影響,從技術(shù)性和經(jīng)濟性兩方面,選取評價抽水蓄能電站對電網(wǎng)影響的4個單一評價指標,并給出了基于搜索算法結(jié)合BPA仿真的指標計算方法,進而提出了一種綜合指標的構(gòu)造方法；最后,以某省電網(wǎng)為例,對備選的7個抽水蓄能電站接入方案進行評價,給出規(guī)劃方案的排序,為抽水蓄能電站的建設提供參考。
[Abstract]:Wind power, as a new renewable energy, has great significance in alleviating the energy crisis and has been developed rapidly in recent years. Wind power generation has its own unique volatility and intermittency, which brings more power flow fluctuations to the power grid, and becomes an uncertain factor that must be considered in the power network planning stage. Pumped-storage power station is one of the main measures to improve the capacity of accepting wind power in power network. It is an important aspect of power network planning to study the selection and construction sequence of the planning scheme of pumped storage power station. Therefore, it is of great academic and practical value to study the power network planning method under large-scale wind power access. The traditional power grid planning model divides the wind farm output into several typical operation scenarios, and it is difficult to take all the operation conditions of the wind farm into account. The existing programming models based on opportunity constraints are few, and the objective function is only the investment cost, which can only reflect the reliability of the planning scheme by setting reasonable confidence level according to experience, but not quantifying the reliability level. In this paper, an opportunity-constrained programming model is adopted to reflect the influence of wind power output volatility on the power grid by the branch load probability, and the quantitative reliability level of the objective function is introduced. First of all, this paper gives the relevant probability and statistics theory involved in the calculation of probabilistic DC power flow, and uses the method based on semi-invariant method and Gram-Charlier series to calculate the active power probability density function of the branch circuit. The method and Monte Carlo method are used to calculate the example. The results show that the accuracy of the method meets the requirement and the calculation speed is fast. Then, the method of point estimation to calculate the shortage of electric power expectation is given, and the IEEE 24 bus test system is calculated. The calculation results show that the method is fast and suitable for repeated calculation in the programming model. Secondly, the paper takes the load probability as the constraint condition, takes the minimum investment cost and the expected minimum of power shortage as the single objective function, and constructs the satisfaction index by the fuzzy membership function as the evaluation function. A multi-objective opportunity-constrained programming model for transmission system considering branch fault load fluctuation and uncertainty of active power output of wind farm is proposed. The IEEE 24-bus test system is solved by differential evolution algorithm, which verifies the validity of the proposed model and provides a good solution to the transmission system planning problem with large-scale wind farms. Finally, in view of the characteristics of pumped storage power station and its influence on power grid, four single evaluation indexes are selected to evaluate the impact of pumped storage power station on power network from the aspects of technology and economy. The index calculation method based on search algorithm and BPA simulation is given, and then a comprehensive index construction method is put forward. Finally, taking a provincial power network as an example, seven alternative access schemes for pumped storage power stations are evaluated. The order of the planning scheme is given, which provides a reference for the construction of pumped storage power station.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM614;TM715

【參考文獻】

相關(guān)期刊論文 前10條

1 周吉安;靳丹;王維洲;但揚清;劉文穎;;大電源接入方式對短路電流的影響分析[J];電工電能新技術(shù);2012年01期

2 朱海峰,程浩忠,張焰,馬則良,朱忠烈;考慮線路被選概率的電網(wǎng)靈活規(guī)劃方法[J];電力系統(tǒng)自動化;2000年17期

3 楊寧,文福拴;基于機會約束規(guī)劃的輸電系統(tǒng)規(guī)劃方法[J];電力系統(tǒng)自動化;2004年14期

4 金華征,程浩忠,楊曉梅,王旭;模糊集對分析法應用于計及ATC的多目標電網(wǎng)規(guī)劃[J];電力系統(tǒng)自動化;2005年21期

5 屈剛;程浩忠;歐陽武;;考慮線路剩余輸電容量的多目標電網(wǎng)規(guī)劃[J];電力系統(tǒng)自動化;2008年10期

6 于晗;鐘志勇;黃杰波;張建華;;考慮負荷和風電出力不確定性的輸電系統(tǒng)機會約束規(guī)劃[J];電力系統(tǒng)自動化;2009年02期

7 劉擁軍;王亮;王強;武彬;;華東電網(wǎng)抽水蓄能電站電能計劃安排方式優(yōu)化算法[J];電力系統(tǒng)自動化;2009年03期

8 朱海峰,程浩忠,張焰,侯志儉;電網(wǎng)靈活規(guī)劃的研究進展[J];電力系統(tǒng)自動化;1999年17期

9 楊京燕,付志奎,張克;抽水蓄能電廠事故備用效益實用算法[J];電網(wǎng)技術(shù);1999年01期

10 張啟平,高家芬,郭佳田;天荒坪蓄能電站投運對華東電網(wǎng)穩(wěn)定的分析[J];華東電力;1997年11期

，

本文編號：2062435