Abstract
Simple simulation model of electricity demand and solar energy supply demonstrates monetary benefit derived from peak shaving and load leveling in operation of battery charging / discharging with photovoltaics.
Probabilistic electricity balancing model is applied to simulation research on battery operation in factories, which have installed photovoltaics, on half hourly basis. The major engineering variables, which are listed up, in this research, are capacity volumes of battery and photovoltaics and margin setting of receiving maximum allowance for cost-effective performance in minimizing total cost of PV / BT system and electric bills including penalty for excess ever these contracted with reginal grid company.
Stand-alone equipment of PV or BT, even with cost receasing by 30% causes ineffective cost performance to facility energy management under the present electricity pricing condition. When considering hybrid system operation of PV and BT, users should join reasonable range of profitable combination of PV and BT systems. As in example of hybrid combination of PV and BT, both condition of PV price decreasing by 50% and BT price decreasing by 75%,userinstalling 280[kW] capacity of PV and BT systems(PV:170[kW], BT:110[kW]) pay no additional cost.
