含風電場的發(fā)電系統(tǒng)旋轉備用優(yōu)化調度模型研究
任禹丞,陸彬,張馨升
東南大學 電氣工程學院,江蘇 南京 210096
摘 要:為研究風電的隨機性和間歇性對電力系統(tǒng)調度計劃中旋轉備用的影響,建立風電預測偏差的概率密度函數(shù),將正態(tài)分布與拉普拉斯分布聯(lián)合,擬合風電預測偏差的概率分布。在處理風電預測與負荷預測的不確定性因素時,基于置信度確定了系統(tǒng)需要增加的旋轉備用容量,并在此基礎上建立旋轉備用優(yōu)化調度模型。通過算例仿真分析,表明置信度可作為調整系統(tǒng)經(jīng)濟性與可靠性的平衡因素,且文中模型的經(jīng)濟性優(yōu)于傳統(tǒng)等備用調度模型。
關鍵詞:風電預測偏差;旋轉備用;置信度;等備用;聯(lián)合優(yōu)化
中圖分類號:TM614 文獻標示號:A 文章編號:1007-3175(2013)07-0005-05
Research on Optimal Scheduling Model of Generation and Spinning Reserve with Wind Farms
REN Yu-cheng, LU Bin, ZHANG Xin-sheng
School of Electrical Engineering, Southeast University, Nanjing 210096, China
Abstract: In order to consider the impact on spinning reserve and generation scheduling caused by the randomness and intermittence of wind power, this paper established the probability density function of the wind power forecast error, which combined mormal distribution with Laplace distribution to simulate the probability distribution of wind power forecast error. In dealing with the uncertainty of wind power and load forecast, confidence level was used to find the added spinning reserve capacity. Based on the total spinning reserve capacity of system, the optimal scheduling model of spinning reserve was built. The analysis of examples shows that confidence level could be the adjusting element of the reliability and economy of system, and the economy function of optimal scheduling model is better than traditional equal reserve scheduling model.
Key words: wind power forecast error; spinning reserve; confidence level; equal reserve; united optimization
[1] 中國電力百科全書(第二版)編輯委員會.中國電力百科全書[M].2版.北京:中國電力出版社,2001.
[2] 廖萍,李興源.實施節(jié)能發(fā)電調度的研究[J].四川電力技術,2008,31(l):8-9.
[3] 曾鳴,史連軍,董軍,等.與市場機制相協(xié)調的節(jié)能發(fā)電調度相關問題研究[J].電力技術經(jīng)濟,2007,19(5):1-5.
[4] Lee Tsung-Ying. Optimal Spinning Reserve for a Wind-Thermal Power System Using EIPSO[J]. IEEE Transactions on Power Systems, 2007, 22(4):1612-1621.
[5] 文福拴,陳青松,褚云龍,等.節(jié)能調度的潛在影響及有待研究的問題[J].電力科學與技術學報,2008,23(4):72-77.
[6] 謝國輝,張粒子,葛炬.節(jié)能發(fā)電調度旋轉備用計劃優(yōu)化[J].電力系統(tǒng)自動化,2009,33(13):43-46.
[7] 李諒,陳軒.基于節(jié)能減排的電力系統(tǒng)短期經(jīng)濟調度研究[J].水電能源科學,2010,28(6):146-149.
[8] 王樂,余志偉,文福拴.基于機會約束規(guī)劃的最優(yōu)旋轉備用容量確定[J].電網(wǎng)技術,2006,30(20):14-19.
[9] 毛毅,車文妍.兼顧節(jié)能與經(jīng)濟效益的月度發(fā)電計劃模型[J].現(xiàn)代電力,2008,25(5):73-78.
[10] Bludszuweit H, Dominguez-Navarro JA, Llombart A. Statistical Analysis of Wind Powr Forecast Error[J]. IEEE Transactions on Power Systems, 2008, 23(3):983-991.
[11] 葛炬,王飛,張粒子.含風電場電力系統(tǒng)旋轉備用獲取模型[J].電力系統(tǒng)自動化,2010,34(6):32-36.