| 引用本文: | 尹航,刘友波,高红均,袁晓冬,陈亮,刘俊勇.含分布式储能系统的交直流混合配电网负荷恢复策略[J].电力自动化设备,2021,41(8): |
| YIN Hang,LIU Youbo,GAO Hongjun,YUAN Xiaodong,CHEN Liang,LIU Junyong.Load recovery strategy of AC/DC hybrid distribution network with distributed energy storage systems[J].Electric Power Automation Equipment,2021,41(8): |
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| 摘要: |
| 当交直流混合配电网发生故障时，可通过合理调用故障区域内的分布式储能系统，配合制定合理的电压源型换流器控制策略，确保重要负荷持续稳定供电。针对交直流混合配电网特殊的网架结构和电气特性，构建了交直流混合配电网负荷恢复模型，所提出的负荷恢复模型以负荷中断时长和电量缺额最小为目标函数，通过嵌入贪婪搜索机制的快速非支配排序的遗传算法(NSGA-Ⅱ)进行求解，得到故障状态下分布式储能及电压源型换流器的最优控制策略。最后通过算例验证了所提方法的有效性，在配电网发生故障后能够快速形成负荷恢复方案，且系统在故障状态下的充裕度随着储能容量的提升而提高。 |
| 关键词: 交直流混合配电网 分布式储能系统 电压源型换流器 负荷恢复 NSGA-Ⅱ |
| DOI：10.16081/j.epae.202106005 |
| 分类号:TM714 |
| 基金项目:国家重点研发计划项目(2017YFB0903300) |
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| Load recovery strategy of AC/DC hybrid distribution network with distributed energy storage systems |
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YIN Hang1, LIU Youbo1, GAO Hongjun1, YUAN Xiaodong2, CHEN Liang2, LIU Junyong1
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1.College of Electrical Engineering, Sichuan University, Chengdu 610065, China;2.State Grid Jiangsu Electric Power Research Institute, Nanjing 210000, China
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| Abstract: |
| When a fault occurs in the AC/DC hybrid distribution network, the DESS(Distributed Energy Storage System) in the fault area can be reasonably invoked, and a reasonable VSC(Voltage Source Converter) control strategy can be formulated to ensure continuous and stable power supply for important loads. Aiming at the special grid structure and electrical characteristics of AC/DC hybrid distribution network, a load recovery model of AC/DC hybrid distribution network is established. The proposed load restoration model takes minimum load interruption duration and power shortage as the objective function, and it is solved by a fast non-dominated sorting genetic algorithm embedded in a greedy search mechanism to obtain the optimal control strategy of DESS and VSC under fault conditions. Finally, an example is used to verify the effectiveness of the proposed method. After a fault occurs in the distribution network, a load restoration scheme can be quickly formed, and the adequacy of system under fault conditions increases with the increase of DESS capacity. |
| Key words: AC/DC hybrid distribution network distributed energy storage systems voltage source converter load recovery NSGA-Ⅱ |
