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A cooperative model of photovoltaic and electricity-to-hydrogen including green certificate trading under the conditional value at risk

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Global Energy Interconnection 2023年第4期6卷 403-417页

作者： Haobo Rong Honghai Kuang Department of Electrical and Control Engineering Nanjing Polytechnic InstituteNanjing 210044P.R.China Department of Electrical and Information Engineering Hunan University of TechnologyZhuzhou 412007P.R.China

Cooperation in energy systems is no longer limited to the distribution of electricity,and more attention is paid to the trading of green certificates(GCs).This paper proposed a cooperative method for photovoltaic(PV)and electric-to-hydrogen(EH)trading,including GC trading under risk management.First,a novel PV and EH model is established and the cooperation mechanism is analyzed.Meanwhile,PV and EH models were risk-controlled using the conditional value at risk to reduce the impact of the uncertainty of PV electricity and EH loads.Then,the PV-EH cooperative model was established based on cooperative game theory;this was then divided into two subproblems of“cooperative benefit maximization”and“transaction payment negotiation,”and the above two subproblems were solved distributively by alternating direction multiplier method(ADMM).Only energy transactions and price negotiations were conducted between the PV and EH,which can protect the privacy and confidentiality of each entity.Finally,the effectiveness of the cooperation model was verified using a practical engineering case.The simulation results show that the cooperation of the PV-EH can significantly improve the operational efficiency of each entity and the overall efficiency of the cooperation and realize the efficient redistribution of electricity and GC.

关键词： green certificates Electric-to-hydrogen Cooperative method Decentralized optimization Renewable energy-absorbing task

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A collaborative approach to integrated energy systems that consider direct trading of multiple energy derivatives

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Global Energy Interconnection 2023年第4期6卷 418-437页

作者： Jianhui Wang Guangqing Bao Peizhi Wang Shoudong Li Department of electrical Engineering and Information Engineering Lanzhou University of TechnologyLanzhou 730000P.R.China School of Electronics and Information Engineering Southwest Petroleum UniversityChengdu 610500P.R.China College of Engineering Northeastern UniversityBoston02101-02117USA

The cooperative model of a multi-subject Regional Integrated Energy System(RIES)is no longer limited to the trading of traditional energy,but the trading of new energy derivatives such as green certificates(GC),Service Power(SP),and CO_(2) will be more involved in the energy allocation of the cooperative model.This study was conducted for the multi-entity RIES cooperative model considering the trading of electronics,GC,SP,and CO_(2).First,a cooperative framework including wind-photovoltaic generation system(WG),combined heat and power system(CHP),and power-carbon-hydrogen load(PCH)is proposed,and the mechanism of energy derivatives trading is also analyzed.Then,the sub-models of each agent in the cooperative model are established separately so that WG has the capability of GC generation,CHP has the capability of GC and CO_(2) absorption,and PCH can realize the effective utilization of CO_(2).Then,the WG–CHP–PCH cooperative model is established and equated into two sub-problems of cooperative benefit maximization and transaction payment negotiation,which are solved in a distributed manner by the alternating directed multiplier method(ADMM).Finally,the effectiveness of the proposed cooperative model and distributed solution is verified by simulation.The simulation results show that the WG–CHP–PCH cooperative model can substantially improve the operational efficiency of each agent and realize the efficient redistribution of energy and its derivatives.In addition,the dynamic parameter adjustment algorithm(DP)is further applied in the solving process to improve its convergence speed.By updating the step size during each iteration,the computational cost,the number of iterations,and the apparent oscillations are reduced,and the convergence performance of the algorithm is improved.

关键词： green certificates Service power CO_(2) Electricity-carbon-hydrogen Cooperative model ADMM

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