考虑碳交易机制与需求响应的园区综合能源系统电热协同运行优化研究

Electrothermal coordinated operation optimization of park integrated energy system considering carbon trading mechanism and demand response

综合能源系统是未来能源系统发展的重要形态之一,在冷、热、电、气多种能源融入系统的情况下,保证系统经济高效运行是综合能源系统发展的关键因素。针对综合能源系统经济运行问题,提出了考虑碳交易机制与需求响应的园区综合能源系统电热协同运行优化方法。考虑园区综合能源系统的阶梯碳交易机制,构建以系统运行成本最小和能效水平最高为目标的双目标运行优化模型,并提出了基于改进差分进化算法的运行优化模型求解方法。对一个典型园区综合能源系统进行仿真,分析参与需求响应前后的系统经济运行工况和能效水平。仿真分析结果表明,建立的运行优化模型可以实现园区综合能源系统在需求响应环境下的最优运行,电网需求响应机制可以有效引导园区综合能源系统提升系统能效、提高关键设备利用率及降低运行成本。

Integrated energy system is one of the important forms of future energy system development, how to ensure the economic and efficient operation of the system is the key factor for the development of integrated energy system under the condition that cold, heat, electricity and gas are integrated into the system. Against the economic operation of park integrated energy system, an electric-thermal cooperative optimization method which considers the carbon trading mechanism and demand response is put forward. Considering the stepped carbon trading mechanism of the park integrated energy system, a multi-objective operation optimization model is constructed,which aims at minimizing the system operation cost and maximizing the energy efficiency level, and a solution method of the operation optimization model based on the improved differential evolution algorithm is proposed. A typical park integrated energy system is simulated, and the economic operating conditions and energy efficiency level of the system before and after participating in demand response are analyzed. The results show that, this operation optimization model can realize the optimal operation of the park integrated energy system in the demand response environment, and the power grid demand response mechanism can effectively guide the park integrated energy system to improve the system energy efficiency, enhance the utilization efficiency of key devices and reduce the operation cost.