考慮DG與負荷需求變動性的供電恢復研究
齊亮,吳嬈
(國網山東省電力公司壽光市供電公司,山東 壽光 262700)
摘 要:針對因災害導致配電網大面積停電,無法通過主網恢復非故障停電區(qū)域供電的情況,建立了基于應急發(fā)電車作為補充電源的微電網動態(tài)供電恢復方案。分析了微電網運行的控制方式與分布式電源之間的并網組合的方案,在電網發(fā)生故障出現(xiàn)大范圍停電時,通過廣度優(yōu)先搜索的方法對孤島進行劃分以恢復停電負荷的供電,考慮到分布式電源發(fā)電的間歇性和負荷需求的變動性,采用應急發(fā)電車作為補充電源以滿足孤島內的“供需平衡”。仿真結果驗證了所提方法的有效性。
關鍵詞:配電網;孤島運行;災害;應急發(fā)電車
中圖分類號:TM732 文獻標識碼:A 文章編號: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
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