NHN.TC1.TS1
NHN.TC1.TS1 - Title
NHN.TC1.TS1 Test System Model
NHN.TC1.TS1 - model overview
Test System Model Overview
Author / organization: Tue Vissing Jensen / DTU
Component Models:
1- Electrical Components
- Electrical distribution grid
- NHN Battery
- NHN Charging post and electric vehicle
2- Heating Components
- District heating network
- Thermal building model
- Domain-coupling units
- NHN District booster heater
3- Controller models
- Local heat pump controller
- Local battery/EV controller
Test Parameters:
- P_import_limit
- P_export_limit
- gamma
Outputs/Measured Parameters:
- P_PCC
- Q_PCC
- P_booster
NHN.TC1.TS1 - input
Input
Related System Configuration
Nordhavn (DTU) System Configuration
Related Test Case
Related Use Case
NHN.TC1.TS1 - description
Short Description
The aim of this test system is to characterizing service provision by power-to-heat units through supervisory controllers. This test characterizes district operation with and without Booster Heater Controller and Electric Storage Controller active, seeking to demonstrate that the local controllers respond to service requests from the aggregator controller. The system under test includes an electrical system, a district heating system and a control system.
This test applies to the generic Nordhavn NHN_001 system configuration (see deliverable D2.3, Appendix D), outlined in Figure B.1. “PCC” denotes the point of common coupling for the district to the various grids. All units connected downstream of the respective PCCs must be simulated.
The characterization concerns the Booster Heater Controller and the Electric Storage Controller in combination with the District Supervisory Controller. Under Joint UC3, the heating system provides services to the electrical system. The test targets an examination of the ability of the system to provide these services. Specific services examined are electrical import and export limitation.
The comparison is made on the electrical and heat exchange for their given PCC. The test is to be evaluated by the objective function “Trade-offs in heat for power”
The test simulates 24 hours of district operation. During these 24 hours, the heat pump controller is asked to keep the forward temperature of the connected pipe above 70ºC.
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NHN.TC1.TS1 - details
Test System Model Details
Title of Test | NHN.TC1.TS1 | ||
Author / Organization | Tue Vissing Jensen / DTU | ||
Reference to Test Case | NHN.TC1 | ||
Test Rationale | This test characterizes district operation with and without Booster Heater Controller and Electric Storage Controller active, seeking to demonstrate that the local controllers respond to service requests from the aggregator controller. |
Specific Test System | The system under test includes an electrical system, a district heating system and a control system. Each is sketched below. The block called “Row Houses” consists of multiple small loads which are aggregated into a single, larger load. | ||
Test and Output Parameters | Test Parameters:
Outputs / Measured Parameters:
| ||
Test Design | The test simulates 24 hours of district operation. During these 24 hours, the heat pump controller is asked to keep the forward temperature of the connected pipe above 70ºC.
where these limits are defined as below. The test consists of several model runs: 1. No service signal sent 2. Service signals sent
By comparing these model runs, whether the controllers respond to service requests can be established. For run 1, set
For subsequent runs, given the 99% quantile of district electrical import P_i_99 and the 1% quantile of district electrical import, P_i_1, let
I.e., the system is asked to restrict its import relative to the uncontrolled base case. |
Component Models | The main component models are listed below, with references given to documents for units described at the time of writing. Electrical units: | ||
Initial System State | Each component is initialized to the state given in the associated dataset. The battery state of charge is set to 50% of nomimal energy. The district heating system is allowed to relax to a steady state with the heat pump turned off. | ||
Temporal Resolution | The test is run at a fixed time step of 10 seconds. | ||
Evolution of System State and Test Signals | For run 1, district electrical and heat exchange follows the aggregate underlying time series for all units. In particular, electrical production from solar photovoltaics causes electrical energy to be exported in the period around 11-14. For run 2a-e, system electrical exchange differs from run 1 mainly during the period for which local controllers are active. During these periods, electrical exchange should comply with the bound requested. | ||
Source of Uncertainty Stopping Criteria | Since the exact electrical demand signal consists of a deterministic trend and a randomized factor, each “run” above should be repeated 10 times, with the mean and standard deviation of each target metric recorded. | ||
Storage of Data | Files are stored in the SmILES data format, with each column corresponding to a target metric, with the target metrics recorded every 10 seconds (rows). |