# Simulation Results of Electric Boiler Use Excess Power

## Results of Simulation of Electric Boiler Use Excess Power - title

**Simulation Results of Electric Boiler Use Excess Power**

## Simulation of Electric Boiler Use Excess Power - setup

**Simulation Setup & Configurations**

**Author / organization: ** Benedikt Leitner / AIT

**Objective Function of Simulation:**

**Simulation Duration:**1 day with control steps calculated for every 15 minutes

**Key Performacne Indicator: **

- KPI1 -
*P**eb**-**P**ref**2*: Quadratic difference of power consumption to set-point - KPI2 –
*Q**dis*****c**DH* - KPI3 – : Minimize constraint violation via slack variables

**Initial Simulation State: **

- District heating pipes have nominal temperatures
- Thermal storages are empty, i.e., have nominal return temperature of district heating network
- Electric boilers not running

**Stopping Criteria of Simulation: **

- Freezing/boiling water in any part of district heating network
- Invalid power flow calculation
- Model predictive controller unable to predict next step (infeasible model)

**Start Point: **

- In principal the initial average tank temperature is estimated based on temperature measurements from physical model
- The initial temperature is assumed to be at the minimum in the results for the open-loop MPC that are shown here

## Results of Simulation of Electric Boiler Use Excess Power - description

**Short Description of Simulation Results **

- The weights ai in the objective function where tuned such that the reference signal for the electric boiler power is tracked nearly perfectly while discharging heat preferably at times where the revenues for district heat supply are high.
- A violation of the soft constraints is severly penalized and does not occur under normal conditions, i.e., initial temperature within bounds.

## Simulation of Electric Boiler Use Excess Power - data

**Simulation Input **

**Test Data**

**Link to test data:**Here**Storage of Data:**SmILES data format

**Test System Model used for Simulation: **

## Results of Simulation of Electric Boiler Use Excess Power - best practice

## Simulation Results of Electric Boiler Use Excess Power - related documents

**Related Documents of Simulation Results **

A catalogue of scenario-specific optimization approaches and results

## Nested Applications

## Results of Simulation of Electric Boiler Use Excess Power - long description

**Results Description of Simulation -- Electric Boiler Use Excess Power**** **

As the MPC is considered to run every 15 minutes for a whole year, only two representative days are shown here. For this example the MPC is triggered at midnight and the set-points for the next 96 time steps, i.e., 24 hours are shown. Note that only the current/first control step is sent to the physical model and at the next control step the MPC is re-run again. The coupled simulation of physical and control model is conducted for a full year to account for seasonal changes in heat demand and photovoltaic generation. The results presented here are only open-loop results for one day without any interaction with the physical model.