Test Case 11

11

Tue Jensen, Kai Heussen (Edmund Widl)

0.2

SmILES, ERIGrid 2.0

2020-12-16

Characterization of power-to-heat service availability and its impact on the networks

A network-integrated booster heat pump is used to also provide services to the electrical system. In the local electrical distribution network congestion may appear, and other flexibility options are available.

This test seeks to characterize the impact of the use of local flexibility on available regulating power from a local district. The test targets an examination of the ability of the system to provide these services when under conflict.

The heating system provides services to the electrical system (a) congestion management - electrical import and export limitation; and (b) regulating power provision.

The characterization concerns the Booster Heater Controller and the Electric Storage Controller in combination with the District Supervisory Controller.

• power (low voltage distribution network)
• heat (coupling points to thermal network)
• control (storage and heat network control)

Characterize the impact use of local flexibility on available regulating power from a local district.

“PCC” denotes the point of common coupling for the district to the external networks. All units connected downstream of the respective PCCs must be considered.

• electrical and heat exchange (at respective PCC)
• electrical energy bound violation
• total district electricity export
• total district thermal energy import

The TCR (test criteria) aim to quantify the resource and service conflicts:

1) the export/import from the electrical distribution network (including the respect for capacity limitations);

2) the service level at the district heating network (energy and service level violations)

• electrical energy bound violation in MWh: given a limit for , measure the violation via the total electrical energy consumption as
• ,

where is a one-sided error measure, e.g. (x)=x if x>0, else x=0.

• electrical and heat exchange (at respective PCC) in MWh
• total district electricity export in MWh
• total district thermal energy import in MWh

Controllable factors:

• booster heater activation
• electrical storage system activation

Uncontrollable factors:

• demand (electrical and thermal)
• PV generation
• prices

N/A