Abstract
This study presents a decentralised off-line strategy for optimal hybridisation and management of photovoltaic (PV)/batteries hybrid systems in residential distribution grids. The aim is to study the voltage plan of the network without/with this process for different penetration rates of PVs and also comparing with the initial grid without PV. The tool has been tested by using a real Swiss distribution network and real data of houses electricity consumption. In addition, a voltage assessment methodology has been proposed. Lot of study cases has been performed and the results show that the voltage plan of the grid is greatly improved, thanks to the tool proposed. For quantify the results, one performance index, which assesses the quality of the network voltage has been introduced.
Highlights
Developed countries promote the residential photovoltaic (PV) energy production systems, which are thriving
The energy efficiency represents the quantity of solar energy produced from the PV panels injected into the grid
Substep 2.2: Depending the penetration rate (PR), the number of PV systems is defined by using the initial daily solar energy production (DSEP)
Summary
Developed countries promote the residential photovoltaic (PV) energy production systems, which are thriving. The EMS defines the constant maximum power injection into the grid by the PV/batteries hybrid system during all the day. The minimum optimal battery size which allows to obtain a full energy efficiency has been defined with a heuristic process. In this context, the energy efficiency represents the quantity of solar energy produced from the PV panels injected into the grid. The tool proposed has a strong feature because it is weakly linked to new ICT deployments and it is decentralised It can be used for existing power grids without additional infrastructure. It is useful to define the daily energy production plan of a PV/battery hybrid system by determining the constant maximum power
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