In order to solve the problem of soil heat imbalance caused by the uneven operation time of ground source heat pump in winter and summer,an optimal scheduling method of regional integrated energy system considering the balance of heat discharged from soil was proposed.First,according to the operating characteristics of ground source heat pump in winter and summer,the annual heat imbalance rate of soil is calculated.Secondly,increase the use time of ground source heat pump in the cooling season to increase the heat output from the soil,so as to ensure the heat balance of ground source heat pump throughout the year.Finally,a double-layer optimization model is constructed.The upper model optimally arranges the output of ground source heat pump based on the system operating cost in winter.The lower model optimizes the output of ground source heat pump based on the system's optimal benefit in summer,taking into account constraints such as the soil heat extraction and emission balance.Simulation examples show that the proposed method effectively solves the problem of soil thermal imbalance and improves system energy efficiency.

为充分挖掘多能互补能源系统"源-荷"协同调峰潜力,提出需求响应与热泵联合调峰的区域综合能源系统经济调度方法.源侧引入天然气热泵,通过多能互补进行供能替代以充分发挥电-气能源互补特性,削减电力高峰空调设备运行负荷;荷侧考虑电价需求响应,将用户用电满意度融入需求响应模型中,计及用户用电体验对电力需求进行优化,以实现电力负荷"削峰填谷".以最小化系统运行成本为目标,综合考虑能量平衡、需求响应约束等,在优化软件CPLEX中进行求解.算例研究表明,源荷协同调峰能够有效降低用电高峰系统电力需求,提高系统运行经济性.

利用能源耦合机制促进多能互补,能够有效提升区域综合能源系统运行的经济性.提出一种考虑燃气热泵配置与运行的区域综合能源系统优化方法.首先,对计及余热利用的燃气热泵进行分析建模,并基于能量枢纽建立含燃气热泵的多能互补系统能量流模型,通过协调冷、热、电源调度出力实现能源间优势互补,改善系统运行经济性;其次,建立区域综合能源系统规划-调度双层模型,上层寻找燃气热泵机组最优容量配置,下层制定系统经济调度计划,采用CPLEX软件进行迭代求解.算例研究表明:燃气热泵能够有效应对天然气价格波动,实现了区域综合能源系统节能经济运行,并提高了孤岛模式下供能可靠性;同时,系统燃气使用量得到优化,有助于削减区域季节性用气峰谷差.

To explore the synergistic optimization effect of electric heat pump and gas heat pump,a regional comprehensive energy system(RIES)economic dispatch method for the coordinated operation of multi-source heat pump systems is proposed.Firstly,a comparative exposition of the technical characteristics of electric heat pump and gas heat pump is conducted.Based on the energy hub,various energy flows of the system under the multi energy complementary operating conditions of electric heat pump and gas heat pump are analyzed.Secondly,based on the price advantages of electricity and gas energy,electric heat pump is used for electric cold energy coupling during peak electricity periods,and gas cooling is replaced by gas heat pump during peak electricity prices to improve the peak valley characteristics and operating costs of the system's electricity load.Finally,a collaborative optimization dispatch model for electric heat pump and gas heat pump is established with the optimal system cost,and solved by using CPLEX software.The calculation example shows that the coordinated operation of electric heat pump and gas heat pump can fully leverage the advantages to reduce the operating cost of the system and optimize the interaction power fluctuation of the interconnection line.Moreover,the proposed method has good environmental benefits.

In order to select a more economical wind power consumption scheme for RIES （regional integrated energy system）， the electricity-gas multi-energy complementarity optimization models considering the reuse of waste heat from power to gas （P2G） reaction and the electric-thermal multi energy complementary optimization model of air source heat pump （ASHP） are established based on the principle of multi-energy complementarity. Taking account of the investment and maintenance cost of P2G and ASHP， the RIES multi-energy complementary economic dispatch model is established with the goal of minimizing the overall operating cost of the system. Constraints of energy supply and demand balance and various unit operation constraints are considered. The optimization software CPLEX is used to solve various models. The example calculation results show that the scheme considering the reuse of waste heat from P2G reaction can reduce the configuration capacity of P2G and increase the operation benefit of the system. On condition of the same consumption rate of wind power， the electric-thermal multi-energy complementary optimization model with ASHP is superior in economy and overall energy efficiency.