Affiliation:
1. School of Electrical Engineering, KIIT deemed to be University, Bhubaneswar, India
Abstract
Background:
An investigation of Automatic Generation Control (AGC) for a two-area,
multi-source, interconnected power system under deregulation is presented in this article. For a
more realistic approach, physical constraints namely Generation Rate Constraints (GRC) and Time
Delay (TD) are incorporated into the system.
Objective:
This article proposed a novel hybrid Improved Gravitational Search Algorithm – Binary
Particle Search Optimization (IGSA-BPSO) optimized Fractional Order Proportional-Integral-
Derivative (FOPID) controller to regulate the frequency of a multi-area multi-source (thermalhydro-
gas) interconnected power system in a deregulated environment.
Methods:
Integral Time Multiplied by Absolute Error (ITAE) is used as the objective function to be
minimized by optimization techniques for getting optimum parameters of FOPID controllers installed
in each area.
Results:
To inspect the efficacy of the suggested method, the dynamics of the system are investigated
for poolco, bilateral and contract violation cases and the comparative results are also presented
and analyzed. The supremacy of the recommended technique is studied by comparing with other
well-known techniques namely GSA and PSO.
Conclusion:
The robustness of the proposed system is examined by sensitivity analysis after variations
in different system parameters. In this paper, the AC-DC tie-line model is incorporated for the
AGC mechanism. Dynamic load changes condition is also tested and verified. The study found that
the proposed controller provides improved system dynamics in all competitive electricity market
contract situations under varied system uncertainties.
Publisher
Bentham Science Publishers Ltd.
Subject
Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials