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access icon free Integration of electric vehicles for load frequency output feedback H ∞ control of smart grids

  • Author(s): Thanh Ngoc Pham 1 ; Hieu Trinh 2 ; Le Van Hien 2, 3 ; Kit Po Wong 4
    • View affiliations
    • Affiliations: 1: Institute for Intelligent Systems Research and Innovation, Deakin University, Geelong, Australia ;
      2: School of Engineering, Deakin University, Geelong, Australia ;
      3: Department of Mathematics, Hanoi National University of Education, Hanoi, Vietnam ;
      4: School of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, Australia
  • Source: Volume 10, Issue 13, 06 October 2016, p. 3341 – 3352
    DOI:  10.1049/iet-gtd.2016.0375 , Print ISSN 1751-8687, Online ISSN 1751-8695
© The Institution of Engineering and Technology
Received 13/03/2016, Accepted 20/04/2016, Revised 07/04/2016, Published 06/10/2016

This study considers a novel application of electric vehicles (EVs) to quickly help reheated thermal turbine units to provide the stability fluctuated by load demands. A mathematical model of a power system with EVs is first derived. This model contains the dynamic interactions of EVs and multiple network-induced time delays. Then, a dynamic output feedback H ∞ controller for load frequency control of power systems with multiple time delays in the control input is proposed. To address the multiple time delays issue, a refined Jensen-based inequality, which encompasses the Jensen inequality, is used to derive less conservative synthesis conditions in terms of tractable linear matrix inequalities. A procedure is given to parameterise an output feedback controller to guarantee stability and H ∞ performance of the closed-loop system. Extensive simulations are conducted to validate the proposed control method.

Inspec keywords: linear matrix inequalities; turbines; electric vehicles; H∞ control; power system stability; power generation control; smart power grids; closed loop systems; load regulation; thermal power stations

Other keywords: tractable linear matrix inequalities; smart grids; dynamic output feedback H∞ controller; closed-loop system; power system stability; multiple-network-induced time delays; refined Jensen-based inequality; load frequency output feedback H∞ control; electric vehicles; power system mathematical model; EV dynamic interaction; thermal turbine units

Subjects: Algebra; Transportation; Thermal power stations and plants; Control of electric power systems; Algebra; Optimal control

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