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Title: Validation on Aggregate Flexibility from Residential Air Conditioning Systems for Building-to-Grid Integration

Abstract

To facilitate the integration of buildings to the power grid, battery-equivalent models have been proposed to characterize and quantify aggregate flexibility from building loads. An analytical method has been proposed to construct such a flexibility model for thermostatically controlled loads. Since this analytical method is derived from a simplified representation of building thermal dynamics, it is necessary to evaluate the resulting flexibility model in a more realistic context. This paper focuses on the validation of this analytical method for estimating aggregate flexibility from residential air conditioning (ACs) systems. A high-fidelity model is first developed to mimic thermal behaviors of a residential AC system through a co-simulation between Modelica and EnergyPlus. A population of virtual residential AC systems is then generated by randomizing parameters of the high-fidelity model. Finally, an aggregate flexibility model is constructed for the residential AC population using the analytical method and validated using results from simulation of the high-fidelity model. It is found that the flexibility estimated using the analytical method is with reasonable accuracy, but can be improved by explicitly incorporating heat gains into the method.

Authors:
 [1]; ORCiD logo [1]
  1. BATTELLE (PACIFIC NW LAB)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1572704
Report Number(s):
PNNL-SA-141726
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Energy and Buildings
Additional Journal Information:
Journal Volume: 200
Country of Publication:
United States
Language:
English

Citation Formats

Huang, Sen, and Wu, Di. Validation on Aggregate Flexibility from Residential Air Conditioning Systems for Building-to-Grid Integration. United States: N. p., 2019. Web. doi:10.1016/j.enbuild.2019.07.043.
Huang, Sen, & Wu, Di. Validation on Aggregate Flexibility from Residential Air Conditioning Systems for Building-to-Grid Integration. United States. doi:10.1016/j.enbuild.2019.07.043.
Huang, Sen, and Wu, Di. Tue . "Validation on Aggregate Flexibility from Residential Air Conditioning Systems for Building-to-Grid Integration". United States. doi:10.1016/j.enbuild.2019.07.043.
@article{osti_1572704,
title = {Validation on Aggregate Flexibility from Residential Air Conditioning Systems for Building-to-Grid Integration},
author = {Huang, Sen and Wu, Di},
abstractNote = {To facilitate the integration of buildings to the power grid, battery-equivalent models have been proposed to characterize and quantify aggregate flexibility from building loads. An analytical method has been proposed to construct such a flexibility model for thermostatically controlled loads. Since this analytical method is derived from a simplified representation of building thermal dynamics, it is necessary to evaluate the resulting flexibility model in a more realistic context. This paper focuses on the validation of this analytical method for estimating aggregate flexibility from residential air conditioning (ACs) systems. A high-fidelity model is first developed to mimic thermal behaviors of a residential AC system through a co-simulation between Modelica and EnergyPlus. A population of virtual residential AC systems is then generated by randomizing parameters of the high-fidelity model. Finally, an aggregate flexibility model is constructed for the residential AC population using the analytical method and validated using results from simulation of the high-fidelity model. It is found that the flexibility estimated using the analytical method is with reasonable accuracy, but can be improved by explicitly incorporating heat gains into the method.},
doi = {10.1016/j.enbuild.2019.07.043},
journal = {Energy and Buildings},
number = ,
volume = 200,
place = {United States},
year = {2019},
month = {10}
}