随着二氧化碳排放量的迅速攀升,经济、环境和能源的矛盾日益突出,发电行业作为典型的碳排放主体,正面临着低碳转型的迫切要求。文章构建了含电转气(power-to-gas, P2G)的碳捕集电厂,通过分析电厂的经济、环境和能源(economy-environment-energy, 3E)特性,建立电厂的3E 综合评价指标体系;为获取3E评价指标的相关数据,构建电厂的两阶段鲁棒优化调度模型,并利用约束生成算法进行求解;设计了组合赋权方法和基于灰色关联度分析的逼近理想解排序方法(grey relational analysis-technique for order preference by similarity to ideal soiution, GRA-POPSIS),形成3E 综合评价模型。通过实际数据进行仿真分析,验证了在电-碳市场环境下,含P2G 的碳捕集电厂相较于WT-GPPCC 系统和WT-GFPP 系统具有更好的经济、环境和能源综合效益,碳捕集、利用与封存(carbon capture, utilization and storage, CCUS)技术为系统带来的综合效益足以弥补其较高的运行成本,并且提出的3E 综合评价模型具有良好的适用性。
英文摘要:
With the rapid escalation of carbon dioxide emissions, the contradiction between economy, environment and energy is becoming more and more prominent, and the power generation industry, as a typical carbon emission subject, is facing the urgent requirement of low-carbon transformation. A carbon capture power plant with power-togas (P2G) was constructed, and the economy-environment-energy (3E) comprehensive evaluation index system of the power plant was established by analyzing the 3E characteristics of the power plant. In order to obtain the relevant data of the 3E evaluation indices, a two-stage robust optimal scheduling model of the power plant was constructed and solved using the constraint generation algorithm. Furthermore, the combination assignment method and technique for order preference by similarity to an ideal solution (GRA-TOPSIS) were designed to form the 3E comprehensive
evaluation model. Simulation analyses were carried out with actual data to verify that the carbon capture power plant with P2G has better integrated economic, environmental and energy benefits compared with the WTGPPCC system and the WT-GFPP system under the environment of the electricity-carbon market, and that the integrated benefits brought by the carbon capture, utilization and storage (CCUS) technology to the system are sufficient to compensate for its high operating cost, and that the proposed 3E integrated evaluation model has good applicability.