Contribution / expertise:

• Place at disposal of electronic converter and energy storage system for intDS
• Development......
• Energy storage equipment manufacturer.

 

Electricity Storage System

An electrical energy storage system consisting of a battery and a bidirectional inverter (ESI) ensures many of the power quality features of the Smart MV/LV-station. The battery is capable of storing 30 kW∙h of electrical energy. The ESI charges and discharges the battery. It supplies to the grid: active and reactive powers in the range 0…60kW and –60…+60 kVAr respectively; a pulsating active power; and harmonic currents by means of emulating the shunting resistances per phase [3]. Next to the aforementioned functions the ESI can operate in island mode as a UPS with the limited power of 60 kW.

The battery is discharged during periods of peak demand and charged during the off-peak periods. The decision about charging or discharging the battery is made by the PowerMatcher Supply Demand Matching system, based on the grid power balance and the state of charge of the battery, as determined by the Battery Management System (BMS).