电-碳-绿耦合交易下多微网群协同运行及利益分配

Synergistic Operation and Benefit Distribution of Multi-Microgrid Clusters under Electricity-Carbon-Green Coupling Transactions

中文关键词:多微网  交替方向乘子法  纳什谈判  绿证-碳交易

keywords:multi-microgrid  ADMM  Nash negotiation  green certificate-carbon trading

中文摘要:多微电网有效缓解了可再生能源并网过程中出力过程中的不确定性。然而，多微网在考虑电-碳-绿耦合交易下电碳交易量求解和利润合理分配仍待解决。基于绿证和碳交易协同机制，提出电-碳-绿耦合交易下多微网群协同运行及利益分配，以促进本地能源消纳和低碳经济发展。首先，在多微网群中引入碳捕集系统和电转气装置，构建了耦合的热电联产模式；其次，结合地方碳交易市场、阶梯碳交易机制和绿证交易机制协同提出了电-碳-绿耦合交易多微网群低碳运行模型，允许微网参与上级与地方不同能源市场的电能和碳配额交易；最后，采用纳什谈判理论对非凸问题分解，并用交替方向乘子法和非对称能量映射贡献度函数分别求解收益最大化和收益再分配2个线性子问题。算例验证了该方法能提升经济效益，并减少碳排放。

Abstract:Multi-microgrids effectively mitigate the uncertainty in power output during the grid-connection of renewable energy sources，yet their participation in coupled electricity-carbon-green certificate markets still leaves open two questions： how much electricity and carbon should be traded，and how should the resulting profits be shared? Based on the synergistic mechanism of green certificate and carbon trading，the synergistic operation and profit distribution of multi-microgrid clusters under coupled electricity-carbon-green trading are proposed to promote local energy consumption and low-carbon economic development. First，the carbon capture system and power-to-gas device are introduced in the multi-microgrid cluster to construct a coupled cogeneration model；second，a low-carbon operation model of multi-microgrid cluster under coupled electricity-carbon-green trading is proposed in synergy with the local carbon trading market，the ladder carbon trading mechanism and the green certificate trading mechanism to allow the microgrids to participate in the trading of electricity and carbon quota in the different energy markets at the upper level and the local level. Finally，the non-convex problem is decomposed using Nash bargaining theory；the alternating direction method of multipliers （ADMM） and an asymmetric energy-mapping contribution function are applied to solve the two resulting linear sub-problems，namely profit maximization and profit reallocation. The arithmetic example has verified that the proposed method can enhance economic efficiency and reduce carbon emissions.