Summary : this story shows the ModeliScale consortium project: motivation, challenges, outcomes and perspectives.

This episode focuses on the 3 industrial cases of the Energy domain that were related to the project challenges .

Work has been done on : description of needs and study scenarios, use of prototypes developed by partners and elaboration of components and models, integration and simulation, evaluation reports.

EDF – Inovel Parc at Vélizy city  

EDF studied the Inovel Parc district of Vélizy city (Ile de France).

Description

Study the future evolutions of an energy system, from a centralized network to interconnected multi-energy networks:

• Design more efficient architecture for the energy system with facilitation of co design of the energy systems
• Size of sub systems, based on legal and operational constraints
• Integrate these systems together
• Optimize operations for eg. electric vehicle charging, electric storage, thermal storage, manage cut-off, etc.

Results

EDF has created a model of the complete district:

• Hundreds of buildings (residential, tertiary and industrial)
• local energy production systems: cogeneration, gas boiler, photovoltaic roofs
• Local distribution networks for heat in buildings
• A distribution MV/LV (medium voltage/low voltage) electrical grid connected to all buildings
• Telecommunication network
• Connection with national electric network

Some details on the technical results

• Several Modelica libraries enhanced and / or created , including DS EPSL library enhanced
• All development made with CATIA Dymola with use of enhancements (described in previous posts) 
• The complete model is spitted into FMUs exported by Dymola, and co-simulated in DACCOSIM NG
• Total size : > 500 000 equations
• Simulation time intermediate results

Value summary

The resulting view  shows how modelling the various facets of the local energy system enables to better optimize the different interactions between the grid’s assets, the global goal being to improve key performance indicators such as the district’s energy efficiency and reduce the environmental footprint, while keeping a good competitiveness and securing networks stability and supply.

ENGIE – Heat networks in Balma and Rillieux cities

ENGIE Lab Cylergie studied the design of heat networks from production to consumers, in two cities:

• Balma (Toulouse suburb, Aquitaine),
• then Rillieux (Lyon suburb, Rhône Alpes).

Description

• Heat networks are used by cities and territories to bring energy to their final users with a de-carbonation perspective
• ENGIE offers the largest number cold network support in the world, 25 TWh production > 3800 Km
• Modeling and simulation the heat networks bring a better support to design these complex systems
• ENGIE aim to both design, pilot and supervise these systems

Results

• 2 steps approach : Balma : small size network, then Rillieux with a larger size
• 3 different boilers, pipes network, Heat exchangers at buildings, storage
• n x 1 000  apartment rooms equivalent
• Parameters and calibration with data from the field
• Extension of the case study in 3DEXPERIENCE

Some details on the technical results

• new library prototype for heat components
• All development made with CATIA Dymola and tested with data from the field
• One year exploitation simulated, with improved simulation time
• Good alignment of results with reality in Balma case, Work in progress for Rillieux case
• 3DEXPERIENCE demonstrator inspired from Balma ; scenario to give a larger view from the customer needs to simulation of the updated design 

Value summary

• Learning from Modelica capability to model and simulate such systems
• Much progress done on the heat network (new library, performances raised) with quality results 
• Some part of the study still in progress on the largest network
• ‘digital twin’ approach is appreciated by ENGIE customers

CEA – Micro grid in Chambery

CEA  Lab studied the design of a multi energy micro  grid, through their own facilities located in Le Bourget-du-Lac - Chambery (Rhône Alpes).

Description

• Address a whole district in CEA premices
• Create synergy between CEA INES teams (disciplines)
• Model multi energy systems with their interaction : production, network, consumption and storage
• Handle a large variety of systems (houses, networks, PV panels, boilers, batteries etc…)
• Create a simulation platform with capability of studies at different grain levels
• Address large models with acceptable simulation time

Results

• Houses with various architecture & parameters
• Commercial buildings
• Solar roofs (thermal & PV)
• District heating
• Electric network, storage
• Electric mobility (vehicles, shading)

Some details on the technical results

• Library of commercial building model (envelop & insulation, orientation, several floors, rooms, doors)
• 4 different individual houses modeled
• New Modelica library of electrical components;
• Electrical model of the micro grid
• Heat network model with CEA internal library with boilers, solar, PAC, storage, ECS and substations
• All models integrated ; with mix of Modelica and FMU
• Nearly one year simulation scenario done , with intermediate execution time

Value summary

• 1st time CEA could handle the Modeling and Simulation view of its systems with :
  • a global view : technologies for production, consumption, transport and Storage
  • an interest for a modular approach (library, sub systems)
• CEA going towards a flexible platform
• Calculation time still to improve 

ModeliScale  Stories  SystemsEngineering  Modelica  FMI  Dymola  EnergyGrids

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