Demonstration of medium scale battery
We build a medium scale storage unit (170kW, 330 kWh) for the demonstration of its flexible and robust use in diverse applications. This battery energy storage system BESS will first operate connected to 1x 400 kVA OLTC MV/LV transformer station of Elektro Gorenjska supplying Suha village residential grid. In the second demo case, storage unit will be connected to LV industrial grid in Elektro Gorenjska headquarters in Kranj.
Medium scale unit connected to low voltage substation in residential grid
Demonstration of flexible and robust use of medium scale storage unit connected to low voltage substation in TS Suha residential grid and EG headquarter industrial grid is the main purpose of this EG demo cases. TS Suha LVN with 7 PV power plants and energy flow in both directions (LVN acting as a regular consumer and as energy source for MV network due to PV production) and as well as industrial demonstration case offers demonstration of variety of project goals as follows:
Medium scale storage unit connected to low voltage substation in industrial grid.
In residential demonstration case, battery storage with power conversion unit will be situated near the transformer station. It will have two major connections with the adjacent transformer station:
All measurements will be collected on 1 minute period at EG Power Quality server and for the purpose of the Story project accessible on Sipronika network control server (SNCS).
RTU controller will acquire all network measurements either via on line communication with Sipronika network control server or directly measure through the battery management system or the energy management system. Based on online real time measurements (1 minute time slot), the appropriate control algorithm integrated within RTU will enable the provision of aforementioned goals. Access to SNCS will also be available for BASN data collection purposes.
"Storage as an important near future smart grid device needs to be thoroughly tested to prove technical acceptance and as well as for exploring the acceptable business model."
Marjan Jerele, Elektro Gorenjska
April 4, 2018
Cage for PCS testing in preparation for FAT (16/04/2018).
March 27, 2018
Prototype for BESS container under assembly.
March 25, 2018
Electronics of one ESI, as part of the PCU.
February 15, 2018
Example of Battery Rack for STORY.
November 9, 2017
Gantt chart showing the most important demonstration activities
A number of power network analysers are already installed within the network for the on line monitoring and control purposes (data is registered per one minute time period). LVN single line diagram also shows the installed network power analyser locations. Recently there are 9 fully monitored and data registered locations:
EG headquarters with the variety of installed electrical devices will serve as a test bed for connection of medium scale storage unit in the industrial grid. The following apparatus are comprised within the EG premises:
The following technologies are installed:
Demonstration of flexible and robust use of medium scale storage unit connected to low voltage substation in TS Suha residential grid and EG headquarter industrial grid is the main purpose of this EG demonstration cases. TS Suha LVN with 7 PV power plants and energy flow in both directions ( LVN acting as a regular consumer and as energy source for MV network due to PV production ) and as well as industrial demo case offers demonstration of variety of project goals as follows:
For second demonstration case, storage unit will be connected into EG headquarters industrial LV network. Suha village LVN is an example of a 0,4 kV rural cable network ( no overhead lines ) with high penetration of PV generation. The cable network topology and positions of PV and 20/0,4 kV MV/LV transformer station.
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