园区多微网P2P电-碳耦合交易市场设计

Market Design of P2P Electricity Carbon Coupling Transaction Among Multi-microgrids in a Zone

针对园区多微网交易多以单纯经济性为导向而忽略碳排放效益的问题,设计了端对端(peer-to-peer,P2P)能量交易与碳交易的耦合市场,以期进一步实现园区低碳运营。首先,基于电力系统在配电网节点处的边际碳排放因子,提出了分布式可再生能源发电低碳贡献的度量方法,构建了各微网基于电-碳交易的收益度量模型。其次,运用基于博弈的P2P交易机制,设计了完全竞争条件下保障各微网能够根据实时电-碳价格灵活调整发用电行为与购售角色的日前电-碳联动市场,并证明了所设计市场博弈均衡点的存在性。再次,基于电能和碳配额的供求关系,推导了电价与碳价的表达式,并提出了可有效保证用户隐私的迭代优化算法。最后,通过算例验证了所设计市场可以有力支撑园区多微网交易中经济效益和低碳效益的融合。

Aiming at the problem that the multi-microgrid transactions in the zone are purely economic oriented and ignore the benefits of carbon emissions,a coupling market of peer-to-peer(P2P)energy trading and carbon trading is designed to further realize the low-carbon operation of the zone.Firstly,based on the marginal carbon emission factor of the distribution network,the measurement method of the low-carbon contribution of distributed renewable energy generation is proposed,and the revenue measurement model of each microgrid based on electricity-carbon trading is constructed.Secondly,by using the P2P trading mechanism based on game theory,a day-ahead electricity-carbon linkage market is designed under the condition of perfect competition,so that each microgrid can flexibly adjust the electricity generation and consumption behavior and the purchase and sale role according to the real-time electricity and carbon price;moreover,the existence of the designed market game equilibrium point is proved.Thirdly,based on the supply-demand relationship of electricity and carbon quotas,the expressions of electricity price and carbon price are derived,and a distributed optimization algorithm which can effectively ensure the privacy of users is proposed.Finally,simulation results verify that the designed market can effectively support the integration of economic benefits and low-carbon benefits in the zone.