基于等可靠性準(zhǔn)則的風(fēng)電場(chǎng)容量可信度評(píng)估方法
張聯(lián)邦,韓寒
華中科技大學(xué) 強(qiáng)電磁工程與新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,湖北 武漢 430074
摘 要:風(fēng)電容量可信度是衡量風(fēng)力發(fā)電對(duì)電力系統(tǒng)可靠性貢獻(xiàn)的重要指標(biāo)。建立風(fēng)速、風(fēng)電機(jī)組和風(fēng)電場(chǎng)出力模型,并考慮尾流效應(yīng),將風(fēng)電場(chǎng)處理為等效的多狀態(tài)發(fā)電機(jī)組。基于發(fā)電系統(tǒng)可靠性指標(biāo)定義了風(fēng)電場(chǎng)的容量可信度,采用截弦法計(jì)算得到風(fēng)電場(chǎng)的容量可信度。以加入風(fēng)電場(chǎng)后的IEEE RTS-96系統(tǒng)作為算例進(jìn)行評(píng)估,通過(guò)風(fēng)電滲透率、系統(tǒng)備用、常規(guī)機(jī)組強(qiáng)迫停運(yùn)率等因素對(duì)風(fēng)電場(chǎng)容量可信度的影響分析,驗(yàn)證了該方法的正確性和有效性。
關(guān)鍵詞:風(fēng)電場(chǎng);容量可信度;多狀態(tài)機(jī)組;風(fēng)電滲透率
中圖分類號(hào):TM614 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2014)10-0007-04
Wind Farm Capacity Credibility Evaluation Method Based on Reliability Criterion
ZHANG Lian-bang, HAN Han
State Key Lab of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract: Wind power capacity credibility is an important index to measure the contribution of wind power for power system reliability. This paper established the wind speed, wind turbines and wind farm output models, taking wake flow effect into consideration, to treat wind farm as the equivalent polymorphic generators. Based on power system reliability index, this paper defined capacity credibility of wind farm and adopted the secant method to calculate the wind farm capacity credibility. With IEEE RTS-96 system added after wind farm as algorithm examples to carry out evaluation, this paper analyzed the wind power penetration rate, system reserved capacity and forced outage rate of routine generators etc impacts on wind farm capacity credibility, which verified the correctness and validity of the method.
Key words: wind farm; capacity credibility; polymorphic generators; wind power penetration rate
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