Load frequency control using Bat inspired algorithm based dual mode gain scheduling of PI controllers for interconnected power system

•In an interconnected power system LFC has a role to maintain the frequency and tie-line flows.•Conventional PI controllers designed by ISE technique results in relatively large over shoots.•New design approach of LFC controller using Bat inspired algorithm is proposed in this paper.•Dual mode conce...

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Bibliographic Details
Published in:International journal of electrical power & energy systems 2015-01, Vol.64, p.365-374
Main Authors: Sathya, M.R., Mohamed Thameem Ansari, M.
Format: Article
Language:English
Subjects:
Algorithms
Bat inspired algorithm based dual mode gain scheduling of PI controllers
Controllers
Electric power generation
Frequency control
Fuzzy gain scheduling of PI controllers
Fuzzy logic
Gain scheduling
Load frequency control
Performance index
PI controllers
Steady state
Thermoelectricity
Two area power system
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Summary:•In an interconnected power system LFC has a role to maintain the frequency and tie-line flows.•Conventional PI controllers designed by ISE technique results in relatively large over shoots.•New design approach of LFC controller using Bat inspired algorithm is proposed in this paper.•Dual mode concept is also incorporated in this controller which improves the system performance.•Simulation results show the effectiveness of the proposed control strategy. This paper highlights the load frequency control using dual mode Bat algorithm based scheduling of PI controllers for interconnected power systems. The bat inspired algorithm based on the echolocation of bats has been developed in 2010. In this study, the bat inspired algorithm based dual mode PI controller is applied to the multi-area interconnected thermal power system in order to tune the parameter PI controllers. The proposed controller is simple in structure and easy for implementation. The proposed controller was compared with those from conventional the PI controllers and Fuzzy gain scheduling of PI controllers. The simulation results show the point that the proposed bat inspired algorithm, based dual mode gain scheduling of PI controllers (BIDPI), provides better transient as well as steady state of response. It is also found that the proposed controller is less sensitive to the changes in system parameters.
ISSN:0142-0615
1879-3517
DOI:10.1016/j.ijepes.2014.07.042