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1.浙江大学电气工程学院,浙江省杭州市 310027
2.国网浙江省电力有限公司营销服务中心,浙江省杭州市 310000
3.浙江电力交易中心有限公司,浙江省杭州市 310007
4.国网义乌市供电有限公司,浙江省义乌市 322000
Received:12 June 2021,
Revised:2021-08-02,
Published Online:20 October 2021,
Published:25 February 2022
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HU Jindi,LIU Si,SHEN Guang,et al.Distributed Model Predictive Control Strategy of Reactive Power Response for Charging Piles Based on Peer-to-Peer Communication[J].Automation of Electric Power Systems,2022,46(4):25-35.
胡金迪,刘思,沈广等.基于端对端通信的充电桩无功响应分布式模型预测控制策略[J].电力系统自动化,2022,46(4):25-35. DOI: 10.7500/AEPS20210612002.
HU Jindi,LIU Si,SHEN Guang,et al.Distributed Model Predictive Control Strategy of Reactive Power Response for Charging Piles Based on Peer-to-Peer Communication[J].Automation of Electric Power Systems,2022,46(4):25-35. DOI: 10.7500/AEPS20210612002.
电动汽车充电桩无功响应潜力的挖掘利用可优化配电网运行,同时提升基础设施容量利用率。文中提出了一种居民充电桩参与无功响应的分布式模型预测控制策略,在不依赖控制、通信中心的前提下,通过端对端通信和边缘计算实现充电桩的协同无功响应,改善配电网电压质量。首先,基于瞬时功率理论与灵敏度矩阵建立了充电桩无功响应的优化模型,利用模型预测控制算法求解充电桩控制电压的最优设定值。然后,建立基于时间戳异步更替的邻域端对端通信策略,交互彼此的电压、功率预测信息,实现多桩优化问题解耦,提升整体调压效果。最后,通过算例仿真表明,所提无功控制策略能在满足充电桩有功充电需求的前提下,有效降低电网电压偏差;此外,端对端通信交互模式下,相比无通信模式下的充电桩无序响应,所提策略的调压效果提升明显,并具有较好的通信时延鲁棒性。
The exploration and utilization of the reactive power response potential of electric vehicle charging piles can optimize the operation of the distribution network and increase the utilization rate of infrastructure capacity. In this paper
a distributed model predictive control strategy in which residential charging piles participate in reactive power response is proposed. On the premise of not relying on control and communication centers
peer-to-peer (P2P) communication and edge computing are used to realize the coordinated reactive power response of charging piles and improve the voltage quality of the distribution network. First
based on the instantaneous power theory and the sensitivity matrix
an optimal model of the reactive power response of the charging pile is established. Model predictive control algorithm is used to solve the optimal setting value of control voltage for the charging pile. Then
a neighborhood P2P communication strategy is established based on the asynchronous replacement of timestamps. The voltage and power prediction information of each other is exchanged to realize the decoupling of optimization problems for multiple piles and improve the overall voltage regulation effect. Finally
an example simulation shows that the proposed reactive power control strategy can effectively reduce the grid voltage deviation on the premise of meeting the active charging demand of the charging pile. In addition
in the P2P communication interaction mode
the voltage regulation effect of the proposed strategy is significantly improved compared to the disorder response of the charging pile in the non-communication mode
and it has better communication delay robustness.
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