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Computer Science > Systems and Control

arXiv:1803.02883 (cs)
[Submitted on 7 Mar 2018 (v1), last revised 5 Nov 2018 (this version, v3)]

Title:On the round-trip efficiency of an HVAC-based virtual battery

Authors:Naren Srivaths Raman, Prabir Barooah
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Abstract:Flexible loads, especially heating, ventilation, and air-conditioning (HVAC) systems can be used to provide a battery-like service to the power grid by varying their demand up and down over a baseline. Recent work has reported that providing virtual energy storage with HVAC systems lead to a net loss of energy, akin to a low round-trip efficiency (RTE) of a battery. In this work we rigorously analyze the RTE of a virtual battery through a simplified physics-based model. We show that the low RTEs reported in recent experimental and simulation work are an artifact of the experimental/simulation setup. When the HVAC system is repeatedly used as a virtual battery, the asymptotic RTE is 1. Robustness of the result to assumptions made in the analysis is illustrated through a simulation case study.
Comments: Added a new simulation case study
Subjects: Systems and Control (eess.SY); Dynamical Systems (math.DS)
Cite as: arXiv:1803.02883 [cs.SY]
  (or arXiv:1803.02883v3 [cs.SY] for this version)
  https://doi.org/10.48550/arXiv.1803.02883

Submission history

From: Naren Srivaths Raman [view email]
[v1] Wed, 7 Mar 2018 21:40:09 UTC (359 KB)
[v2] Tue, 13 Mar 2018 14:49:02 UTC (359 KB)
[v3] Mon, 5 Nov 2018 18:38:36 UTC (342 KB)
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