有源配电网孤岛恢复供电及黑启动策略研究

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摘要在大量分布式电源接入配电网的新形势下,对基于分布式电源孤岛运行的配电网供电恢复及孤岛黑启动策略进行了研究。首先提出根据配电网场景优选孤岛划分模式的新思路,并以4种配电网场景为例,针对具体场景选择不同孤岛划分模式。然后分析每个孤岛内的有功平衡,在DG出力无法满足全部负荷的情况下,搭建0-1整数背包模型,并采用动态规划算法,对孤岛内负荷进行了优化选择。孤岛黑启动操作时,为了实时保障黑启动过程中的孤岛稳定性,提出孤岛稳定裕度指标,评估孤岛稳定状态,随后根据稳定裕度指标制定了孤岛内电源和负荷的启动顺序。最后对10 kV典型配电系统进行了仿真分析,论证了停电区域因地制宜确定孤岛划分模式思路的可行性,同时验证了负荷选择策略和孤岛黑启动操作策略的正确性及有效性。

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	李振坤
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关键词 ：配电网, 分布式电源, 供电恢复, 孤岛划分模式, 黑启动, 孤岛稳定裕度

Abstract：With the maturity of distributed generation (DG) technology,more and more distributed generators are connected to the distribution network.Distribution system power supply restoration based on DG island operation and its black start are studied in this paper.Firstly,according to the distribution network scene,different island division modes are selected.Then four typical power distribution network scenarios are given as examples.The active power balance is analyzed for each island.If the DG output cannot meet the full load,the dynamic programming algorithm is used to choose loads based on 0-1 integer knapsack model.For island black start operation,in order to ensure real time stability in the black start process,islanding stability margin index is proposed to evaluate the islanding stability state.Afterwards,the startup sequence of DGs and loads are determined.Finally,the simulation based on a typical 10 kV distribution system is implemented.The simulation results verify the feasibility of the island dividing mode based on local conditions,and the correctness and validity of the load selection and the black start operation strategy are validated.

Key words： Distribution network distributed generator restoration island partitioning black start stability margin of island

收稿日期: 2014-12-26 出版日期: 2015-11-12

PACS:

TM315

基金资助:国家自然科学基金(51407113)和上海绿色能源并网工程技术研究中心(13DZ2251900)资助项目。

通讯作者: 李振坤男,1982年生,副教授,研究方向为主动配电网规划及其运行控制、分布式电源并网及微电网。

作者简介: 周伟杰男,1991年生,硕士研究生,研究方向为配电网恢复供电决策。

引用本文:

李振坤,周伟杰,钱啸,吕勤,符杨. 有源配电网孤岛恢复供电及黑启动策略研究[J]. 电工技术学报, 2015, 30(21): 67-75. Li Zhenkun,Zhou Weijie,Qian Xiao,Lü Qin,Fu Yang. Distribution Network Restoration and Black Start Based on Distributed Generators. Transactions of China Electrotechnical Society, 2015, 30(21): 67-75.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I21/67

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