高比例新能源并网对配电网电压稳定构成严峻挑战,而氢能凭借其高密度、零碳排、高热值等优势,可作为新型调压资源主动参与电压控制,有效提升系统电压韧性。因此,提出一种利用电制氢(power to hydrogen, P2H)辅助的配电网主从博弈电压控...高比例新能源并网对配电网电压稳定构成严峻挑战,而氢能凭借其高密度、零碳排、高热值等优势,可作为新型调压资源主动参与电压控制,有效提升系统电压韧性。因此,提出一种利用电制氢(power to hydrogen, P2H)辅助的配电网主从博弈电压控制策略。首先,考虑到配电网运营商、电制氢运营商和储能运营商间的利益冲突,建立P2H参与的主从博弈双层优化模型。以配电网运营商作为领导者,配电网运行成本最小为目标,制定相应的电价补贴,引导电制氢运营商、储能运营商调整自身用电行为,保证配电网的电压稳定性。其次,考虑到实际情况源荷的不确定性,设计了基于拉丁超立方抽样的日内随机优化算法。最后,算例结果表明,所提出的模型能够有效提升配电网电压的稳定性,且配电网运营商总运行成本较不含P2H的场景降低了14.56%,较未设置激励机制的场景降低了5.67%。展开更多
With the prevalence of renewable distributed energy resources(DERs)such as photovoltaics(PVs),modern active distribution networks(ADNs)suffer from voltage deviation and power quality issues.However,traditional voltage...With the prevalence of renewable distributed energy resources(DERs)such as photovoltaics(PVs),modern active distribution networks(ADNs)suffer from voltage deviation and power quality issues.However,traditional voltage control methods often face a trade-off between efficiency and effectiveness,and rarely ensure robust voltage safety under typical state perturbations in practical distribution grids.In this paper,a robust model-free voltage regulation approach is proposed which simultaneously takes security and robustness into account.In this context,the voltage control problem is formulated as a constrained Markov decision process(CMDP).A safety-augmented multiagent deep deterministic policy gradient(MADDPG)algorithm is the trained to enable real-time collaborative optimization of ADNs,aiming to maintain nodal voltages within safe operational limits while minimizing total line losses.Moreover,a robust regulation loss is introduced to ensure reliable performance under various state perturbations in practical voltage controls.The proposed regulation algorithm effectively balance efficiency,safety,and robustness,and also demonstrates potential for generalizing these characteristics to other applications.Numerical studies vali-date the robustness of the proposed method under varying state perturbations on the IEEE test cases and the optimal integrated control performance when compared to other benchmarks.展开更多
文摘高比例新能源并网对配电网电压稳定构成严峻挑战,而氢能凭借其高密度、零碳排、高热值等优势,可作为新型调压资源主动参与电压控制,有效提升系统电压韧性。因此,提出一种利用电制氢(power to hydrogen, P2H)辅助的配电网主从博弈电压控制策略。首先,考虑到配电网运营商、电制氢运营商和储能运营商间的利益冲突,建立P2H参与的主从博弈双层优化模型。以配电网运营商作为领导者,配电网运行成本最小为目标,制定相应的电价补贴,引导电制氢运营商、储能运营商调整自身用电行为,保证配电网的电压稳定性。其次,考虑到实际情况源荷的不确定性,设计了基于拉丁超立方抽样的日内随机优化算法。最后,算例结果表明,所提出的模型能够有效提升配电网电压的稳定性,且配电网运营商总运行成本较不含P2H的场景降低了14.56%,较未设置激励机制的场景降低了5.67%。
基金supported in part by the National Natural Science Foundation of China(No.52177109)Key R&D Program of Hubei Province,China(No.2020BAB109).
文摘With the prevalence of renewable distributed energy resources(DERs)such as photovoltaics(PVs),modern active distribution networks(ADNs)suffer from voltage deviation and power quality issues.However,traditional voltage control methods often face a trade-off between efficiency and effectiveness,and rarely ensure robust voltage safety under typical state perturbations in practical distribution grids.In this paper,a robust model-free voltage regulation approach is proposed which simultaneously takes security and robustness into account.In this context,the voltage control problem is formulated as a constrained Markov decision process(CMDP).A safety-augmented multiagent deep deterministic policy gradient(MADDPG)algorithm is the trained to enable real-time collaborative optimization of ADNs,aiming to maintain nodal voltages within safe operational limits while minimizing total line losses.Moreover,a robust regulation loss is introduced to ensure reliable performance under various state perturbations in practical voltage controls.The proposed regulation algorithm effectively balance efficiency,safety,and robustness,and also demonstrates potential for generalizing these characteristics to other applications.Numerical studies vali-date the robustness of the proposed method under varying state perturbations on the IEEE test cases and the optimal integrated control performance when compared to other benchmarks.
