Wind-Solar-CHP Multi-agent Optimal Operation Strategy Based on Bargaining Power

doi:10.12204/j.issn.1000-7229.2023.01.014

Abstract

Abstract:

Aiming at the problem that the individual rationality of the agent in the integrated energy system is not fully considered, and the power system pays more and more attention to the consumption of renewable energy and the reduction of carbon emissions, this paper proposes an optimal operation strategy of wind-solar-CHP multi-agent energy system considering the bargaining power. In this paper, the integrated energy system is divided into wind, photovoltaic and CHP agents, and their cooperative operation model is constructed, and hydrogen production technology and ladder-type carbon trading mechanism are added to the CHP agent. Then, according to Nash bargaining theory, a wind-solar-CHP multi-agent cooperative operation model is established. Due to the nonconvexity of the proposed cooperative operation model, it is decomposed into the system operation cost minimization problem (P1) and the transaction payment problem (P2). In P2, a bargaining power model considering economic and environmental gains is proposed. Each agent realizes the fair distribution of income according to its own bargaining power. Finally, in order to protect the privacy of cooperation, the alternating direction method of multiplier (ADMM) is used to solve P1 and P2. The results show that the optimal operation strategy of wind-solar-CHP considering bargaining power can not only realize the fair distribution of cooperative benefits, but also effectively alleviate the problems of wind curtailment, solar power curtailment and carbon emissions. In addition, the power-to-hydrogen technology can better promote the low-carbon economic operation of the system than the power-to-gas technology.

This work is supported by Natural Science Foundation of Shandong Province (No. ZR2020QE215).

Key words: integrated energy system, Nash negotiation, bargaining power, power to hydrogen, renewable energy consumption

CLC Number:

TM73

XIE Ruishuo, YU Zexu, DOU Zhenhai, QIAO Mengmeng, ZHAO Ye, WANG Yuanyuan. Wind-Solar-CHP Multi-agent Optimal Operation Strategy Based on Bargaining Power[J]. ELECTRIC POWER CONSTRUCTION, 2023, 44(1): 118-128.

Figures/Tables 9

Fig.1 Wind-solar-CHP multi-agent operation frame

Fig.2 Energy flow frame of a CHP agent

Fig.3 The distributed iterative convergence curve of P1

Fig.4 The distributed iterative convergence curve of P2

Table 1 Environmental gain before and after cooperation

Fig.5 Electricity trading results of the CHP agent

Table 2 Benefit distribution based on bargaining power

Table 3 Cost and benefit analysis of standard Nash negotiation model before and after cooperation

Table 4 Benefit comparison of CHP agent in different scenarios

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