考慮DG與負(fù)荷需求變動(dòng)性的供電恢復(fù)研究
齊亮,吳嬈
(國(guó)網(wǎng)山東省電力公司壽光市供電公司,山東 壽光 262700)
摘 要:針對(duì)因?yàn)?zāi)害導(dǎo)致配電網(wǎng)大面積停電,無(wú)法通過(guò)主網(wǎng)恢復(fù)非故障停電區(qū)域供電的情況,建立了基于應(yīng)急發(fā)電車作為補(bǔ)充電源的微電網(wǎng)動(dòng)態(tài)供電恢復(fù)方案。分析了微電網(wǎng)運(yùn)行的控制方式與分布式電源之間的并網(wǎng)組合的方案,在電網(wǎng)發(fā)生故障出現(xiàn)大范圍停電時(shí),通過(guò)廣度優(yōu)先搜索的方法對(duì)孤島進(jìn)行劃分以恢復(fù)停電負(fù)荷的供電,考慮到分布式電源發(fā)電的間歇性和負(fù)荷需求的變動(dòng)性,采用應(yīng)急發(fā)電車作為補(bǔ)充電源以滿足孤島內(nèi)的“供需平衡”。仿真結(jié)果驗(yàn)證了所提方法的有效性。
關(guān)鍵詞:配電網(wǎng);孤島運(yùn)行;災(zāi)害;應(yīng)急發(fā)電車
中圖分類號(hào):TM732 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2019)02-0029-06
Research on Power Supply Restoration Considering DG and Load Demand Variability
QI Liang, WU Rao
(Shouguang City Power Supply Company, State Grid Shandong Electric Power Company, Shouguang 262700, China)
Abstract: Aiming at the large area power failure of distribution network caused by disasters, which couldn’t recover the power supply of non-malfunction power failure area through the major network, this paper established the microgrid dynamic power restoration scheme based on emergency generators as supplementary power supply and analyzed the grid-connected combination scheme between the control method of microgrid operation and distributed power supply. When the large-scale power outages of distribution networks happened, the breadth-first search method was used to carry out partition for the islands to recover the power supply of power outage loads. Considering the intermittency of the distributed power generation and the change of the load demand, the emergency power generation vehicle was used to meet the balance of supply and demand. The simulation result verifies the effectiveness of the proposed method.
Key words: distribution network; island operation; disaster; emergency generators
參考文獻(xiàn)
[1] 黃強(qiáng),王家紅,歐名勇.2005 年湖南電網(wǎng)冰災(zāi)事故分析及應(yīng)對(duì)措施[J]. 電網(wǎng)技術(shù),2005,29(24):16-19.
[2] 于永清, 李光范, 李鵬, 等. 四川電網(wǎng)汶川地震電力設(shè)施受災(zāi)調(diào)研分析[J]. 電網(wǎng)技術(shù),2008,32(11):1-6.
[3] 黃弦超. 含分布式電源的配電網(wǎng)故障恢復(fù)模型[J]. 電力系統(tǒng)保護(hù)與控制,2011,39(19):52-57.
[4] HUANG Chaoming. Multi-Objective Service Restoration of Distribution Systems Using Fuzzy Cause-Effect Networks[J]. IEEE Transactions on Power Systems,2003,18(2):867-874.
[5] 孫潔,王增平,王英男,等. 含分布式電源的復(fù)雜配電網(wǎng)故障恢復(fù)[J]. 電力系統(tǒng)保護(hù)與控制,2014,42(2):56-61.
[6] KUMAR Y, DAS B, SHARMA J.Multiconstraint service restoration of electric power distribution system with priority customers [J]. IEEE Transactions on Power Delivery,2008,23(1):261-270.
[7] 李振坤,周偉杰,王堅(jiān)敏,等. 基于風(fēng)光荷功率曲線的有源配電網(wǎng)動(dòng)態(tài)孤島劃分方法[J]. 電力系統(tǒng)自動(dòng)化,2016,40(14):58-71.
[8] 張曉雪,牛煥娜,趙靜翔,等. 考慮微電網(wǎng)供電潛力的配電網(wǎng)孤島劃分[J]. 電力自動(dòng)化設(shè)備,2016,36(11):51-58.
[9] 向月,劉俊勇,姚良忠. 故障條件下含分布式電源配網(wǎng)的孤島劃分與重構(gòu)優(yōu)化策略研究[J]. 電網(wǎng)技術(shù),2013,37(4):1025-1032.
[10] 張海波,張曉云,陶文偉. 基于廣度優(yōu)先搜索的配電網(wǎng)故障恢復(fù)算法[J]. 電網(wǎng)技術(shù),2010,34(7):103-108.
[11] 楊麗君,呂雪姣,李丹,等. 含分布式電源的配電網(wǎng)多故障搶修與恢復(fù)協(xié)調(diào)優(yōu)化策略[J]. 電力系統(tǒng)自動(dòng)化,2016,40(20):13-19.