[Zurück]

Bharat Rao, M. Stefan, T. Brunnhofer, R. Schwalbe, R. Karl, F. Kupzog, G. Taljan, F. Zeilinger, P. Stern, M. Kozek:
"Optimal capacity management applied to a low voltage distribution grid in a local peer-to-peer energy community";
International Journal Of Electrical Power & Energy Systems, 134 (2022), 107355.

This paper presents a methodology to optimally share the available grid capacity among customer assets con-
nected within a low voltage distribution grid. Distributed energy resources (DERs) and a new generation of loads
such as heat pumps, thermal, hydrogen, electric storages, and vehicles are increasingly being connected to
distribution grids. These DERs and loads are intermittent and it is essential to optimally control them for the safe
operation of the grid. Additionally, there is increased interest in the local generation, production, trading, and
consumption of energy. New regulations to establish local energy communities (LEC) have come to fruition
among member nations across Europe. This is to provide a control, market, and legal framework for managing
such distributed generators and flexibilities in low and medium-voltage distribution grids and conclusively
empower end-users to democratize the energy system. Within a LEC, a local energy market (LEM) is to be
implemented. A significant constraint of a LEM or energy accounting system is the grid settlement process. The
grid should remain in a steady state when the bids in the market are executed. The methodology discussed in this
paper will preemptively stabilize the grid and generate limiting profiles at various locations for individual
flexibilities that are part of the local energy market. This is achieved by using an Optimal Capacity Management
system which generates limiting profiles at the points of common couplings of various controllable devices in the
grid. The controllable devices are required to maintain their active power injection and consumption within the
generated limiting profiles to ensure optimum grid level. This will ensure that grid limits are maintained, which
are simulated on a test feeder and also applied to a real network model from the Heimschuh pilot site in Styria,
Austria.

http://dx.doi.org/10.1016/j.ijepes.2021.107355