Project name: Connected Stationary Battery Energy Storage
Project name
(Croatian): Umreženi
stacionarni baterijski spremnici energije – USBSE
Source of
funding: European Regional Development Fund, Operational Programme:
Competitiveness and Cohesion 2014. - 2020.
Web
page: https://usbse.eu/
Facebook
page: https://www.facebook.com/usbsefer
Start
date: 13.03.2020.
End
date: 07.05.2023.
Project partners:
· University of
Zagreb, Faculty of Electrical Engineering and Computing (lead);
· Josip Juraj Strossmayer
University of Osijek, Faculty of Electrical Engineering, Computer Science and
Information Technology Osijek
· University of
Zagreb, Faculty of Economics and Business
· Total budget: 5.481.718,37
HRK
Project co-ordinator: Prof Hrvoje Pandžić PhD, FER Zagreb
FERIT’s Project co-ordinator: Prof Danijel Topić PhD
FERIT team: Prof Denis Pelin PhD, Prof Goran Knežević PhD, Andrej Brandis MEng, Dragan Vulin PhD, Josip Bilandžić MEng, Zvonimir Šimić MEng
Project summary:
European Commission, with the new energy package called Clean energy for all European package, tends to change the electricity market model while changing the position of the distribution system and its users. New terms and market participants are defined, like distributed flexibility sources and aggregators. Distributed flexibility sources are all users of the distribution grid that can change the power delivered/received to/from the grid according to market/grid signals.
Since distribution grid users have lower installed
capacity compared to large market players (power plants connected to
transmission grid, traders, and suppliers of electrical energy) their
electricity market presence is provided through new wholesale participants
called Aggregators of distributed flexibility sources. The project's purpose is
to reduce electricity costs to users in buildings and allow active
participation in the system operation thereby increasing system
safety.
The above will be achieved through the development of
a connected stationary battery energy storage system. The product has three
main keys:
The subject product is of great importance for modern
power systems because it allows integration of the greater share of renewable
energy sources. Namely, in a conventional power system, consumers were passive
and the task of controllable conventional generators (gas, nuclear, thermal, and
hydro) was following the load consumption in the power system.
With an increase in the share of renewable energy
sources, there are more non-controllable and poorly controllable generators
(photovoltaic, wind generators) and system balancing is shifted to consumption
that becomes an active participant in the power system.
Active consumers that have the ability of consumption
time shift, that coincides with production from renewable energy sources, are
key to a very high share of production from renewable energy sources,
consequently sustainable development of modern society. With the system
balancing, active consumers with battery storages reduce electricity costs.
Namely, commercial consumers, that are consumers whose connected power is above
20 kW, pay engaged power, that is the peak power achieved during the month.
With the use of the battery storage that discharges during peak power,
consumers reduce fees for engaged power.
Except for the peak power reduction, with proper
management, part of electricity consumption can be shifted from the higher
(day) tariff to the lower (night) tariff, which is achieved with charging of
battery storage during the night and discharging during the day. While peak
power reduction and load shifting reduce electricity costs, providing reserve
brings revenue to active consumers. Namely, transmission system operators are
obligated to procure reserve services according to the market principles.
Considering that the power of only one active consumer
in most cases is not enough for providing reserve, an aggregator is a new
entity on the electricity market that will aggregate a higher number of active
grid users, optimize their resources and offer them together on the ancillary
service market. Therefore, the important part of this project is the
development of the grid aggregator system that will centrally communicate with
active grid users that can time-shift their consumption and with transmission
system operators to provide the ancillary service – reserve.
Subject software solution that allows simple
connection of the high number of active consumers with battery energy storages
is the main advantage of the proposed product in relation to existing battery
energy storages available on market.
Main
project goals:
