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考虑P2H/G/A的综合能源系统优化调度
Optimal Scheduling of Integrated Energy System Considering P2H/G/A
针对传统综合能源系统存在的能源产物种类单一、污染气体排放量高以及经济性差等问题，提出一种集成电转氢（power to hydrogen，P2H）、氢转气（hydrogen to gas，H2G）、氢转氨（hydrogen to ammonia，H2A）等电力多元转换 （power to X，P2X）技术的电热联供综合能源系统构型。首先，在系统模型方面，通过引入碳捕集、利用与封存（carbon capture，utilization and storage，CCUS）与火电机组富氧/掺氨燃烧等技术，构建电转氢/气/氨（power to hydrogen/ gas/ ammonia，P2H/G/A）耦合系统；其次，在电力系统低碳经济转型方面，构建综合考虑富氧燃烧-H2G耦合模型碳减排、增加供热经济收益效果以及H2A-掺氨燃烧耦合模型降低煤耗成本和燃煤碳排放效果的综合能源系统目标函数；最后，基于内蒙古某示范基地构建算例，对比分析不同能源转化技术的经济效益与碳减排效果，结果表明：所提集成系统能够显著优化能源结构，实现多能协同低碳经济运行；相比传统综合能源系统，经济性成本减少了7.5×105元（19.5%），环保性成本减少了5.0×105元（11.5%）。
Aiming at the problems of single energy product types， high pollutant gas emissions and poor economic efficiency in traditional integrated energy systems， a configuration of electric-thermal combined supply integrated energy system with power to X （P2X） technologies such as power to hydrogen （P2H）， hydrogen to gas （H2G） and hydrogen to ammonia （H2A） is proposed. Firstly， in terms of system modelling， a power to hydrogen/ gas/ ammonia （P2H/G/A） coupled system is constructed by introducing technologies such as carbon capture， utilization and storage （CCUS） and oxygen enriched/ammonia mixed combustion in thermal power units. Secondly， in the low-carbon economic transformation of the power system， a comprehensive energy system objective function is constructed， which considers the carbon reduction effects and improved heating economic benefits of the oxygen enriched combustion- H2G coupling model， as well as the reduction of coal consumption costs and coal-related carbon emissions by the H2A- ammonia mixed combustion coupling model. Finally， an example is constructed based on a demonstration site in Inner Mongolia， the economic benefits and carbon reduction effects of different energy conversion technologies are compared and analyzed. The conclusion shows that the proposed integrated system can significantly optimize the energy structure and achieve multi-energy cooperative low-carbon economic operation. Compared with traditional integrated energy systems， the economic cost is reduced by 7.5 × 105 Yuan （19.5%） and the environmental cost is reduced by 5.0 × 105 Yuan （11.5%）.
电转氢/气/氨（P2H/G/A） / 富氧燃烧 / 碳捕集、利用与封存（CCUS） / 掺氨燃烧
power to hydrogen/gas/ammonia （P2H/G/A） / oxygen-enriched combustion / carbon capture， utilization and storage （CCUS） / ammonia-mixed combustion
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To address the problem of renewable energy consumption, the low-carbon coordinated operation mode of a multi-energy-coupled system with ammonia energy and generalized energy storage was studied. The combination of ammonia energy and a coal-fired unit of coal-ammonia co-combustion was used to optimize the carbon emissions of the system. First, considering the flexible regulation characteristics of the multi-energy flow interaction and generalized energy storage with the participation of ammonia energy, a comprehensive benefit evaluation index with the minimum operating cost, maximum utilization rate of renewable energy, and minimum carbon emission as the objective function was constructed. A carbon flow topology analysis method based on the energy flow correlation was proposed. The carbon flow information was used as an auxiliary decision-making method for a comprehensive benefit evaluation, and a simulation analysis of the actual regional system was performed. The comprehensive benefits of the system were effectively improved through the coordinated control of the ammonia energy and generalized energy storage. |
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