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Reference · Energetics

Local source 20 kVA with 62.3 kWh battery storage

Partner: LTW Battery, Prague

Construction period: 2020 | Country: Slovakia

Local source 20 kVA with 62.3 kWh battery storage

Customer challenge

A containerized on-grid system with battery storage / a parallel energy store for connection to a local supply network

VONSCH solution - turnkey

VONSCH products supplied
GSE CONTROL

An on-grid/off-grid battery system with a three-phase inverter and black-start capability in the event of a supply outage. The system uses BMZ Samsung Li-ion NMC battery modules with built-in balancing and a BMS. The battery modules together with the BMS are installed in a switchboard. The pack voltage is 540 to 740 VDC and the total capacity of the battery assembly is 62.3 kWh. A bidirectional GSE CONTROL inverter designed for battery storage and a three-phase grid is used. The GSE CONTROL 400 inverter is built for lithium batteries. The inverter power is 20 kVA. The system can switch between on-grid and off-grid modes with only brief interruptions. It can power critical loads even during a grid outage, preventing lost profit and unnecessary costs during power failures. The system enables zero export to the distribution network, reduction of 15-minute technical maxima, reactive power compensation, power and frequency control, and battery charging/discharging and forming. The control system and BMS make it possible to manage the power flow between the battery and the grid efficiently, with a long battery life and high reliability. The equipment has a guaranteed service life of more than 7 years. It is an eco-friendly device — minimal self-consumption and no harmful emissions.

Scope of delivery (technical specification)
  • Technical solution
  • Installation and commissioning
  • Switchboard design, declarations of conformity, technical documentation
  • Li-ion NMC battery bank 62.3 kWh, DoD 99.9%, 5000 cycles
  • GSE CONTROL 400/20 inverter
  • Three-phase transformer 330/400 V, 50 Hz, Dyn1
  • SIMATIC control system
  • UPS power supply
  • SIMATIC energy module for zero-export control
  • eWON visualization
  • Grid protection and HRM circuits

Project in numbers

20 kW
Power

Why VONSCH

We reduce the risk of a wrong decision - from design to service you deal with a single partner who stands behind the solution.

  • A manufacturer, not a reseller - we develop and build power electronics in Brezno, Slovakia.
  • A turnkey solution - one responsibility from design through installation to commissioning.
  • Service and spare parts from Slovakia throughout the entire lifetime of the equipment.