Robust Load Frequency Control with Dynamic Demand Response for Deregulated Power Systems Considering Communication Delays

Zhu, Qi, Jiang, Lin ORCID: 0000-0001-6531-2791, Yao, Wei, Zhang, Chuan-Ke and Luo, Cheng (2017) Robust Load Frequency Control with Dynamic Demand Response for Deregulated Power Systems Considering Communication Delays. ELECTRIC POWER COMPONENTS AND SYSTEMS, 45 (1). pp. 75-87.

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Abstract

Communication networks are used in load frequency control (LFC) for transmitting remote measurements and control commands, and in demand side response (DSR) for aggregating small-scale controllable loads. This paper investigates modeling and controller design for LFC together DSR in a deregulated environment, considering multiple time delays introduced by the usage of communication channels. Time delay model of the deregulated multi-area LFC with dynamic demand control (DDC) is obtained at first, in which a typical thermostatically controlled appliance, air conditioner, is used for DDC. A robust proportional integral derivative (PID) load frequency controller is designed, through the H∞ performance analysis and the particle swarm optimization (PSO) searching algorithm, to deal with the load disturbances and multiple delays in the LFC loop and the DDC loop. Case studies based on a three-area deregulated LFC system demonstrate the effectiveness of the proposed load frequency controller and the performance improvement from the DDC. Simulation results show that the DDC can increase the delay margin of the LFC scheme. Moreover, several delay stable regions are revealed via simulation method.

Item Type:	Article
Additional Information:	peerreview_statement: The publishing and review policy for this title is described in its Aims & Scope. aims_and_scope_url: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=uemp20
Uncontrolled Keywords:	load frequency control, demand side response, dynamic demand control, deregulated environment, communication delays
Depositing User:	Symplectic Admin
Date Deposited:	10 Feb 2017 15:31
Last Modified:	19 Jan 2023 07:19
DOI:	10.1080/15325008.2016.1233300
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3005736