张赟;王琛;王毅;韩冰;

• 1:华北电力大学河北省分布式储能与微网重点实验室
• 2:华北电力大学新能源电力系统国家重点实验室

摘要(Abstract)：

直流微电网处于孤岛运行状态时需要储能来维持整个系统的功率平衡与电压稳定,而分布式接入的储能单元由于负荷功率分配不合理等会出现荷电状态(state of charge,SOC)不一致问题。为了实现不同储能单元SOC之间的快速均衡,提出了一种基于自适应下垂控制的多储能SOC均衡策略。在所提策略中,储能单元的下垂系数通过反正切函数与SOC建立联系,下垂系数可随SOC在允许范围内自适应地变化,以达到合理分配功率、均衡多储能SOC的目的。此外,为了加快均衡速率,引入放大因子,并建立采用所提控制策略的直流微电网小信号模型,对放大因子对系统稳定性的影响进行了分析。最后,搭建了光储直流微电网硬件在环仿真(hardware-in-the-loop simulation,HILS)实验平台,实验结果验证了所提控制策略在快速均衡多储能SOC方面的有效性。

关键词(KeyWords)： 直流微电网;多储能单元;自适应下垂控制;SOC动态均衡;稳定性分析

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金资助项目(2019MS077)

作者(Author): 张赟;王琛;王毅;韩冰;

Email:

DOI:

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