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有源配电网孤岛恢复供电及黑启动策略研究

, PP. 67-75

Keywords: 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

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Abstract:

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10kV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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