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1.交直流智能配电网湖北省工程中心,湖北省武汉市 430072
2.武汉大学电气与自动化学院,湖北省武汉市 430072
3.武汉汉测电气有限公司,湖北省武汉市 430070
范培潇(1999—),男,硕士研究生,主要研究方向:微电网智能控制。E-mail:whufpx0408@163.com
杨军(1977—),男,通信作者,教授,博士生导师,主要研究方向:电动汽车、电力系统运行安全与稳定等。E-mail:JYang@whu.edu.cn
柯松(1997—),男,博士研究生,主要研究方向:电动汽车、微电网控制等。E-mail:kesong1997@whu.edu.cn
收稿:2023-03-18,
修回:2023-06-28,
网络出版:2023-09-15,
纸质出版:2023-10-25
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范培潇,杨军,柯松等.基于改进EDRL的含V2G孤岛微电网频率综合控制策略[J].电力系统自动化,2023,47(20):23-32.
FAN Peixiao,YANG Jun,KE Song,et al.Integrated Frequency Control Strategy for Islanded Microgrid with Vehicle-to-Grid Based on Improved Evolutionary Deep Reinforcement Learning[J].Automation of Electric Power Systems,2023,47(20):23-32.
范培潇,杨军,柯松等.基于改进EDRL的含V2G孤岛微电网频率综合控制策略[J].电力系统自动化,2023,47(20):23-32. DOI: 10.7500/AEPS20230318002.
FAN Peixiao,YANG Jun,KE Song,et al.Integrated Frequency Control Strategy for Islanded Microgrid with Vehicle-to-Grid Based on Improved Evolutionary Deep Reinforcement Learning[J].Automation of Electric Power Systems,2023,47(20):23-32. DOI: 10.7500/AEPS20230318002.
针对孤岛微电网中源荷不确定性所导致的频率失稳、电动汽车用户充电需求受损与微型燃气轮机调控成本增加等问题,提出了基于改进进化-深度强化学习(EDRL)的含电动汽车与电网互动(V2G)孤岛微电网频率综合控制策略。首先,考虑了V2G过程对电动汽车用户充电需求的影响,以及微型燃气轮机组出力分配对调控成本的影响,构建了微电网综合控制模型;其次,为了应对综合频率控制这类具有欺骗性奖励、稀疏奖励的工程任务,结合进化算法和深度强化学习算法,并基于新颖搜索加以改进,从而有效协助训练过程跳出局部最优解,逼近最优策略;进一步,以频率偏差、综合成本与电动汽车充电站信息为状态集,以调频机组出力作为动作集,以频偏与综合成本为奖励函数指标,完成了综合控制的结构设计。算例结果表明,所提出的控制器能够在保证微电网调频需求的情况下,有效降低微型燃气轮机组的调控成本与车主的充电需求损失。
Aiming at the problems of frequency instability
damage to the charging demand of electric vehicle (EV) users and increased regulation cost of micro-gas turbine that are caused by the uncertainty of the source and load in the islanded microgrid
this paper proposes a integrated frequency control strategy for the islanded microgrid with vehicle to grid (V2G) based on the improved evolutionary-deep reinforcement learning (EDRL). Firstly
considering the impact of the V2G process on the charging demand of EV users
and the impact of the output distribution of micro-gas turbine units on the regulation cost
a comprehensive control model of the microgrid is constructed. Secondly
in order to deal with engineering tasks such as integrated frequency control with deceptive rewards and sparse rewards
the evolutionary algorithm and the deep reinforcement learning algorithm are combined and improved based on the novelty search
so as to effectively assist the training process to jump out of the local optimal solution and approach the optimal strategy. Furthermore
the structural design of the integrated control is completed by taking the frequency deviation
comprehensive cost and EV charging station information as the state set
the frequency regulation unit output as the action set
and the frequency deviation and comprehensive cost as the reward function indices. Finally
the case results show that the proposed controller can effectively reduce the regulation cost of the micro-gas turbine units and the charging demand loss of EV owners while ensuring the frequency regulation demands of the microgrid.
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