In recent years,the proportion of electricity consumption from air conditioning systems in the total grid load has been increasing continuously.Therefore,active participation of air conditioning systems in electrical power demand response is crucial for achieving peak-load shifting and valley-load filling,enhancing the flexibility of the power system,and ensuring the safe and stable operation of the grid.The scientific assessment of the demand response potential of air conditioning systems is the basis for achieving flexible control of air conditioning loads.The challenge lies in being susceptible to the coupling effects of multiple factors,making quantitative assessment difficult.Taking an office building in a hot summer and cold winter zone as an example,this study conducts sensitivity analysis of four factors(weather,building envelope performance,air conditioning system performance,and demand response strategies)that influence the demand response potential of air conditioning systems using control variable method based on the simulation in EnergyPlus software.The results indicate that the impact of building envelope performance on the demand response potential of air conditioning system is relatively small,while the other three factors have greater influences.Specifically,when the enthalpy of outdoor air increases from 70~75 kJ/kg to 85~90 kJ/kg in summer,the peak load reduction of air conditioning system when participating in demand response events(i.e.demand response potential)rises from 13.01 W/m2to 17.54 W/m2(a 35%increase).When the COP of VRF air conditioning system decreases from 4.0 to 2.5,the demand response potential increases from 19.51 W/m2to 31.21 W/m2(a 60%increase).When the COP of water-cooled air conditioning system decreases from 6.0 to 3.0,the demand response potential increases from 11.60 W/m2to 23.20 W/m2(a 100%increase).Furthermore,changing the demand response strategy from a 2℃increase in room temperature setpoint to a 4℃increase results in the demand response potential increasing from 10.74 W/m2to 17.28 W/m2(a 61%increase).
demand responseair conditioning systeminfluencing factors analysisoffice buildinghot summer and cold winter zone