煤改电背景下空气源热泵系统对电网负荷影响的模拟分析

在煤改电进程中,为减缓因规模化应用空气源热泵供暖对电网负荷造成的负面影响,模拟研究空气源热泵供暖系统对电网负荷的影响情况.以京郊地区400万用户的采暖用电为例,采用EnergyPlus能耗模拟软件分析供暖期不同阶段用户侧优化调控,以满足电网需求响应的可能及优势.研究结果表明:与空气源热泵直接供暖(ASHP)系统相比,空气源热泵蓄热(ASHP-HS)系统可大幅降低电网峰谷差,提高电网负载率,更有利于电网的稳定安全运行;尽管ASHP-HS系统的初投资较高,但其增加的成本部分的回收年限仅为3.5 a,具有更好的全生命周期经济性.

Simulation Analysis of Influence of Air Source Heat Pump System on Power Grid Load in Background of Coal-to-Electricity Reform

With the continuous advancement of coal-to-electricity engineering, the influence of air source heat pump heating system on grid load is simulated in order to reduce the negative impact of large-scale application of air source heat pump heating on grid load. Taking the heating power of 4 million users in the suburbs of Beijing as an example, the EnergyPlus energy simulation software is used to analyze the possibility and advantages of optimizing the user side to meet the grid demand response in different stages of the heating period. The results show that compared with the air source heat pump direct heating(ASHP)system, air source heat pump thermal storage(ASHP-HS)system can greatly reduce the peak-to-valley difference of the grid and increase the grid load rate, which is more conducive to the stability and security of the grid. Although the initial investment of ASHP-HS system is higher, the recovery period is only 3.5 a, which has better life cycle economy.