Abstract
This paper deals with optimal resources planning in a residential complex energy system, including FC (fuel cell), PV (Photovoltaic) panels and the battery. A day-ahead energy management system (EMS) based on invasive weed optimization (IWO) algorithm is defined for managing different resources to determine an optimal operation schedule for the energy resources at each time interval to minimize the operation cost of a smart residential complex energy system. Moreover, in this paper the impacts of the sell to grid and purchase from grid are also considered. All practical constraints of the each energy resources and utility policies are taken into account. Moreover, sensitivity analysis are conducted on electricity prices and sell to grid factor (SGF), in order to improve understanding the impact of key parameters on residential CHP systems economy. It is shown that proposed system can meet all electrical and thermal demands with economic point of view. Also enhancement of electricity price leads to substantial growth in utilization of proposed CHP system.
Highlights
combined heat and power system (CHP) system is a lucrative alternative which offers lower energy costs, higher efficiency, higher reliability, stability in the face of uncertain electricity costs and lower greenhouse gas (GHG) production
In the first eight intervals, as the utility electrical cost is at its lowest level, the battery is charged and the major part of electrical demand is supplied by the utility
In this paper, a new configuration for a residential building energy system has been proposed, including a FC, PV and a battery connected to the utility
Summary
Operation and maintenance cost of battery (kw) Output power of battery Part Load Ratio Electrical power produced by fuel cell Efficiency of fuel cell. Electrical load demand Thermal load power Heat power produced by fuel cell Minimum energy limit of battery Maximum energy limit of battery. Efficiency of battery charging hourly self-discharge rate Upper limit of ramp rate of fuel cell Lower limit of ramp rate of fuel cell Minimum limit of fuel cell generated power Maximum limit of fuel cell generated power Efficiency of Battery charging Electrical to thermal power ratio of fuel cell. Αhmadi et al.: Optimal Resources Planning of Residential Complex Energy
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