Distributed control scheme on cost optimisation under communication delays for DC microgrids

Distributed control scheme on cost optimisation under communication delays for DC microgrids
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直流微电网通信时延下成本优化的分布式控制方案

DOI:
10.1049/iet-gtd.2016.1716
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发表时间:
2020
影响因子:
2.5
通讯作者:
Liu Zhangjie
Liu Zhangjie
中科院分区:
工程技术4区
文献类型:
--
作者:
Han Hua;Wang Hao;Sun Yao;Yang Jian;Liu Zhangjie

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研究了通信网络中存在时变时延时直流微电网的分布式经济调度问题。提出了一种新的分布式算法,所提出的控制器包含分布式发电成本优化模块和电压调节模块。成本优化模块的目标是通过使每个分布式发电机的成本增量率相等来实现成本优化。在电压调节模块中,使用分布式同步算法来恢复全局平均电压。在分析了通信时延对系统稳定性的影响后,利用线性矩阵不等式得到了系统在负载变化时的鲁棒稳定临界性。通过仿真和实验验证了该方案的性能。
This study addresses the distributed economic dispatch problem for DC microgrids when time‐varying delays are present in communication networks. A novel distributed algorithm is proposed, and the proposed controller contains a distributed generation cost optimisation module and a voltage regulation module. The cost optimisation module is aimed to realise cost optimisation by driving the incremental cost rate of every distributed generator to be equal. In the voltage regulation module, a distributed synchronisation algorithm is used to restore the global average voltage. After the effect of the communication delay on the system stability is analysed, the robust stability criticality under load changes is obtained by using linear matrix inequality. The performance of the proposed scheme is validated through simulations and experimentally.
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