Simulation Results of Nordhaven toSmartfab/Flexoffice Cross-Simulation (DTU-KIT) - title

Simulation Results of Nordhaven to Smartfab/Flexoffice Cross-Simulation (DTU-KIT)

Simulation Results of Nordhaven to Smartfab/Flexoffice Cross-Simulation (DTU-KIT) - setup

Simulation Setup & Configurations

  • System Configuration: The system configuration of the Nordhavn to SmartFab/FlexOffice cross-simulation comprises the SmartFab/FlexOffice system (SFFO) and specific parts of the Nordhavn system. The SFFO configuration was extended by the district heating network components like the pipes and local (DER) consumers and the huge, quartier battery model.
  • Use-case:
    • Heating Network in KIT Tool-Chain.
    • Transfer Battery model and run in KIT tool-chain

This cross-simulation between DTU and KIT investigates, if the specific parts of the Nordhavn system configuration can be replicated in the KIT’s toolchain. This approach is of specific interest for both partners, as control paradigms like model predictive control developed by KIT might be meaningful to be implemented in the Nordhavn model as well. However, it is unclear if the simulation approaches can be combined due to Nordhavn’s complex model. The modelled district heating network consists of 153 nodes and 152 pipes with a length of about 3,8 km and a heat demand of about 4 MW. Moreover, the strong differences in the timing resolution of the models (seconds versus hours).

Simulation Results of Nordhaven to Smartfab/Flexoffice Cross-Simulation (DTU-KIT) - goal

Cross-Simulation Goals

Nordhavn’s district heating network Integration in KIT’s model:

The goal of this part of the cross-simulation is to validate, that KIT’s toolchain is capable of handling large models and how well the transfer of the network can be performed using the PreCISE approach to share model parts and data.

Battery model integration in KIT FlexOffice model:

The goal of the second part of the cross-simulation is to evaluate the differences if a complex battery model is replaced by a simpler battery model.

The objective of this simulation is to find the minimum for the energy supply costs, considering peak power only as part of the overall energy supply cost. Therefore, the key performance indicator (KPI) sums up

  • the energy costs (electricity consumption in kWh and peak power in kW) as well as
  • the investment, operational and maintenance cost for the battery and an appropriately sized PV plant.

Simulation Results of Nordhaven to Smartfab/Flexoffice Cross-Simulation (DTU-KIT) - workflow

Description of Tasks and Workflow

After the preparation of the test case and test specification documents in the PreCISE format KIT implements the model into its toolchain (Matlab/Simulink). Both, the implementation of the test specification TS1a of the Nordhavn model in KIT’s toolchain and the results of KIT’s simulation are analysed and discussed with DTU. The results of the analysis will yield an optimized version of the test specification TS1b.

This cross-simulation will reveal:

1. possible limits on upscaling caused by toolchains and changes in modelling paradigms.

2. the principle usability of model predictive control techniques for large district heating networks.

3. simulation inaccuracies stimulated by model simplification (e.g. in the case of the integration of the simple Nordhavn battery model to KIT’s smart fab).