ModelSim

 

ModelSim – Interface for integral planning of urban energy systems

Duration: 2,5 years

Start: 01/2017

End: 09/2019

Project partners:

  • Building Lifecycle Management (BLM) , Karlsruhe Institute of Technology
  • Institute of Energy Efficiency and Sustainable Building (E3D), RWTH Aachen University
  • GEF Ingenieur AG
  BMWi  

ModelSim – Interface for integral planning of urban energy systems

IT-based planning and simulation tools are increasingly important for an efficient and integral planning process of urban energy systems. Up to now insufficient interfaces and deficient interoperability between systems inhibit a consistent application of these planning methods. Objective of this research project is to improve the technical integration planning tools by identification of process-related information demands and based upon that develop a bidirectional interface as extension to the established CityGML standard. A meaningful use case for the bidirectional coupling of CityGML and the simulation domain Modelica is the identification of preferential areas for the use of district heating.

The CityGML based ModelSim interface incorporates explicit building information as well as implicit typology data and utilizes CityGML extensions such as the Energy ADE. The tool chain allows processing building information from the CityGML standard to the Modelica based simulation domain. In a first step relevant building information are extracted from CityGML and stored in a database, which structure is based on the open source geodatabase 3DCityDB. The building information are transferred to TEASER – Tool for Energy Analysis and Simulation for Efficient Retrofit. Here, data enrichment based on typology data is conducted so that in a next step ready-to-run Modelica simulation models can be created. These models are then simulated and key figures, e.g. heating demand, is transferred back to the 3DCityDB database. Based on the heat demands of the buildings a district heating network model can be synthesized within the tool uesmodels. The dynamic network simulation provides information about temperature and pressure conditions.

Acknowledgements
We gratefully acknowledge the financial support by Federal Ministry for Economic Affairs and Energy (BMWi), promotional reference 03ET1410.

  ModelSim