How is Denmark balancing the energy grid?

Denmark is at the forefront of integrating renewable energy into its power system. Wind and solar power are becoming increasingly dominant in its energy mix. Coal and natural gas usage are declining, while heat pumps are increasingly popular for residential heating. This shift creates challenges when it comes to balancing the grid.

How many grid payments are there in Denmark?

5 Grid payments cover DSO grid tariffs, DSO subscription fees, TSO grid, and system tariffs. Source: The Danish Utility Regulator The calculations are based on 4,000 kWh as an annual household consumption. In 2023, there were approximately 56 electricity suppliers, from among which consumers could choose.

What is the difference between distribution grid and transmission grid?

The distribution grid is defined as the public electricity supply grid with a nominal volt-age below 100 kV. The transmission grid is defined as the public electricity supply grid with a nominal volt-age above 100 kV. 3.2.32. Point of Communication (PCOM) The point where information is exchanged between the power-generating plant and other actors.

Can a power-generating plant inject DC currents into the grid?

A power-generating plant may not inject DC currents into the grid. This requirement is met if the DC content of the current injected by the plant into the grid is below 0.5% of the nominal current of the plant. If the power-generating plant is connected to the grid by means of a plant transformer, it is assumed that this requirement is met.

Which power-generating plants can be connected to a low-voltage grid?

This document only contain requirements for power-generating plants of types A and B as only power-generating plants of these types can be connected to the low-voltage grid. Larger power-generating plants are connected to the medium and high-voltage grid.

Can a power generating plant detect islanding in Denmark?

In Denmark, only passive islanding detection methods are used. The use of vector jump relays (ANSI 78) or active islanding detection is not allowed on power-generating plants connected to the Danish public electricity supply grid. A power-generating plant must have the functions for islanding detection specified in table 5.8.