计及碳交易成本的多能源站综合能源系统规划

Optimal planning of multi-energy stations considering Carbon-trading cost

冷、热、电等能源行业分开规划、独立运行的传统模式制约着电力系统综合能效的提高。为推行碳排放交易政策,改变传统单一经济目标主导的规划模式,将碳交易与综合能源系统规划相结合,提出一种计及碳交易成本的多能源站综合能源系统规划方法。首先,建立了包含碳排放量计算、碳排放初始配额和碳交易成本的数学模型。其次,在分析综合能源系统投资运行成本计算模型的基础上,以碳交易成本和系统投资运行成本最小为目标,计及电、冷、热多种能源约束和热网损耗约束,构建综合考虑经济性及低碳性的规划模型。算例仿真结果表明,地理距离较近的多能源站通过热网可实现热能互供互济,且在综合能源系统规划中计及碳交易成本能有效降低系统碳排放,提高系统整体能效,具有可观的经济效益。

The conventional energy industries including cold, heat, and electricity are relatively enclosed, and the separate planning and operation mode restricts the enhancement of the comprehensive energy efficiency. In order to implement the carbon emission trading policy and change the traditional planning mode dominated by single economic objective, a multi-energy station integrated energy system planning method considering the cost of carbon trading is proposed by combining carbon trading with integrated energy system planning. Firstly, the initial quota and cost of carbon emission for an integrated energy system are discussed. Then, the calculation model of investment and operation costs is analyzed. For the purpose of minimizing the comprehensive cost of carbon trading and the investment and operation costs of integrated energy system, a planning model is established to realize the performance of low-carbon and economy with the constraints of multi-energy equipment and energy loss of heat pipelines. Finally, a practical case is studied. It is shown that the heat network can be utilized for the inter-connection of several energy stations within a short distance, and the proposed planning method leads to significant benefits in reducing energy costs and carbon emissions.