NDLI: Coordinated state-estimation method for air-conditioning loads to provide primary frequency regulation service

Content Provider	IET Digital Library
Author	Li, Zihao Wu, Wenchuan Zhang, Boming
Abstract	The penetration of large-scale renewable generation leads to a shortage of primary frequency regulation resources as well as increasing regulation demand. By exploiting the thermal capacity of buildings, the authors achieve linear power–frequency characteristics comparable to turbine droop control via clustering a number of air-conditioning units (ACs) to participate in primary frequency regulation without affecting indoor comfort. Due to the bandwidth limitations and latency in communication, the real-time centralised control method face great challenges. This study proposes a two-level coordinated state-estimation method to reduce the coordination burden, in which a central coordinator and local controller for each AC are involved. The central coordinator periodically gathers the working state of every AC and estimated thermal parameters individually, then broadcasts this identified model parameters – the coordination information – to each local controller. Resorting to a state-estimation method considering the coordinated information and local measurements, local controller determines whether to toggle the state of local AC to realise a fast frequency response. Simulation results show that the approach can effectively manage a large number of ACs with heterogeneous parameters to provide a primary frequency regulation service without inducing a rebound effect.
Starting Page	3381
Ending Page	3388
Page Count	8
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 13, Sep (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2017.0176
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-06-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	AC Air Conditioning Air Conditioning Loads Bandwidth Limitation Building Management System Building Thermal Capacity Buildings (energy Utilisation) Central Coordinator Centralised Control Control of Electric Power System Control of Heat System Control System Analysis Coordinated State-estimation Method Coordination Burden Reduction Frequency Control Frequency Response Heterogeneous Parameter Large-scale Renewable Generation Penetration Linear Power– Frequency Characteristics Local Controller Power System State Estimation Primary Frequency Regulation Service Real-time Centralised Control Method Rebound Effect Refrigeration And Cooling (energy Utilisation) Renewable Energy Source Synthesis Method Thermal Parameter Two-level Coordinated State-estimation Method
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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