基于变动碳排放强度的电碳联合市场滚动出清模型

Rolling Clearing Model of Electro-Carbon Joint Market Based on Variable Carbon Emission Intensity

针对电力市场与碳市场交易物的物理约束不同,交易时间尺度差异较大,2个市场难以有效融合的问题,提出了一种基于变动碳排放强度以及集中碳交易模式的电碳联合市场滚动出清模型。模型内通过考虑机组的碳排放强度-负荷率区间增强了电力市场和碳市场之间的互动性,同时基于集中碳交易模式的联合市场滚动出清缩小碳市场的交易时间尺度直至与电力市场同步,更好地发现不同时段下碳排放权的价值。通过算例模拟分析随着中国碳排放基准值的进一步减小以及新能源渗透率的提高对于各机组的影响。结果表明:在所提模型中随着碳排放基准值的减小,高碳排放机组的平均碳成本提高了46%,低碳机组的平均碳收益增加了27%,新能源机组渗透率的提高使得高容量火电机组的平均碳成本降低了5.53%,因此所提模型可有效促进系统向清洁方向转化。相较于传统阶梯碳定价机制,所提模型中高碳排放机组的平均碳成本降低了6.13%,可间接提高高碳排放机组参与碳市场的积极性。

Due to the difference of the physical constraints of traded goods and trading time scale in the electricity market and the carbon market are different,it was difficult for the two markets to integrate effectively.Aiming at the problem,a rolling clearing model of the electro-carbon joint market based on the variable carbon emission inten-sity and the centralized carbon trading mechanism was proposed.In the proposed model,the interaction between the electricity market and the carbon market was enhanced by considering the carbon intensity and load rate interval of the unit.Meanwhile,the rolling clearance of the joint market based on the centralized carbon trading mechanism reduced the trading time scale of the carbon market to synchronize with the electricity market,making it′s better to found the value of carbon emission rights in different periods.With the further reduction of China′s carbon emission baseline value and the increase of new energy penetration rate,the impact on each unit was analyzed by simulation examples.It was verified that in the proposed model,with the reduction of the carbon emission baseline value,the average carbon cost of high-carbon emission units increased by 46%,the average carbon income of low-carbon e-mission units increased by 27%,and the increase in the penetration rate of new energy units reduced the average carbon cost of the large-capacity thermal power units by 5.53%.Therefore,the proposed model could effectively promote the transformation of the clean direction of the system.Compared with the traditional stepped carbon pri-cing mechanism,the average carbon cost of high-carbon emission units in the proposed model was reduced by 6.13%,which could indirectly improve the enthusiasm of high-carbon emission units to participate in the carbon market.