NDLI: Load frequency control of a hydro-thermal system under deregulated environment using biogeography-based optimised three-degree-of-freedom integral-derivative controller

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Load frequency control of a hydro-thermal system under deregulated environment using biogeography-based optimised three-degree-of-freedom integral-derivative controller

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Load frequency control of a hydro-thermal system under deregulated environment using biogeography-based optimised three-degree-of-freedom integral-derivative controller

Content Provider	IET Digital Library
Author	Rahman, Asadur Saikia, Lalit Chandra Sinha, Nidul
Abstract	This study presents the load frequency control of an interconnected two-area power system under deregulated environment with area1 as a thermal system having two generating companies and area2 as hydro-thermal system. Appropriate generation rate constraint, and governor dead band are provided in the areas. Three-degree-of-freedom integral-derivative (3DOF-ID) controllers are used as secondary controllers in the areas whose performance is compared with that of two-degree-of-freedom integral-derivative (2DOF-ID) and single-degree-of-freedom controllers such as integral (I), integral-derivative (ID). Biogeography-based optimisation (BBO) technique is used for simultaneous optimisation of controller gains and electric governor parameters. Analysis of the dynamic responses reveal the superiority of 3DOF-ID controller over I, ID, and 2DOF-ID controllers, in terms of settling time, peak deviation and magnitude of oscillation. Sensitivity analysis proved that, BBO optimised parameters obtained at nominal conditions are robust. 3DOF-ID controller parameters obtained at nominal distribution companies participation matrix (DPM) are healthy enough and not necessary to optimise for change in DPMs. Variation in frequency bias coefficient (B) concludes that the best selection for B is equal to area frequency response characteristics. Similarly, selection of governor speed regulation parameter (R) infers higher value for thermal-system, while hydro-system should be kept comparatively low.
Starting Page	2284
Ending Page	2293
Page Count	10
ISSN	17518687
Volume Number	9
e-ISSN	17518695
Issue Number	Issue 15, Nov (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/9/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2015.0317
Journal	IET Generation, Transmission & Distribution
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	3DOF-ID Controllers Acceleration Algebra Area Frequency Response Characteristic BBO Technique Biogeography-based Optimisation Technique Control of Electric Power System Control System Analysis Controller Gain Deregulated Environment DPM Dynamic Response Dynamic Response Analysis Electric Governor Parameter Electricity Supply Industry Deregulation Frequency Bias Coefficient Variation Frequency Control Generation Rate Constraint Governor Dead Band Governor Speed Regulation Parameter Selection Hydro-thermal System Hydroelectric Power Stations And Plant Hydrothermal Power System Interconnected Two-area Power System Load Frequency Control Load Regulation Matrix Algebra Nominal Distribution Companies Participation Matrix Optimisation Optimisation Technique Power System Economics Power System Interconnection Power System Managemen Power System Operation Rotation Control Synthesis Method Thermal Power Stations And Plant Three-degree-of-freedom Integral-derivative Controller Velocity Velocity Control
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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