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Load-frequency control01:28

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Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
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The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
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The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
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The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
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Power system distribution involves delivering electrical energy from power plants to consumers through a network of transmission and distribution systems. The process begins at power plants, where energy from coal, gas, nuclear, water, and wind is converted into electrical energy. These plants use three-phase generators, typically rated between 50 to 1300 MVA, with terminal voltages ranging from a few kV to 20 kV, depending on the size and age of the units.
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Enhancing load frequency control and automatic voltage regulation in Interconnected power systems using the Walrus

Ark Dev1, Kunalkumar Bhatt1, Bappa Mondal2

  • 1Department of Electrical Engineering, Parul Institute of Engineering and Technology, Parul University, Vadodara, Gujarat, India.

Scientific Reports
|November 13, 2024
PubMed
Summary
This summary is machine-generated.

The Walrus Optimization Algorithm (WaOA) enhances power system stability by optimizing fractional order Proportional-Integral-Derivative (FO-PID) controllers for load frequency control and automatic voltage regulation. This novel approach ensures improved power quality and faster system response.

Keywords:
Automatic voltage regulationFO-PID controllerFrequency regulationLoad frequency controlMetaheuristic optimizationPower system stabilityVoltage stabilityWalrus optimization algorithm

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Area of Science:

  • Electrical Engineering
  • Control Systems
  • Optimization Algorithms

Background:

  • Load frequency control and automatic voltage regulation are crucial for maintaining power quality in interconnected power systems.
  • Existing optimization algorithms face challenges in achieving optimal controller performance for these critical functions.

Purpose of the Study:

  • To introduce the Walrus Optimization Algorithm (WaOA) for optimizing fractional order Proportional-Integral-Derivative (FO-PID) controllers.
  • To enhance load frequency control and automatic voltage regulation in a two-area interconnected power system.

Main Methods:

  • The Walrus Optimization Algorithm (WaOA), inspired by walrus behavior, is employed to tune FO-PID controller parameters.
  • MATLAB simulations are utilized to validate the performance of the WaOA-tuned FO-PID controller.

Main Results:

  • The WaOA-tuned FO-PID controller achieved approximately 25% improvement in frequency regulation and faster settling times.
  • Bode plot analyses confirmed system stability with significant gain and phase margins.
  • The proposed method demonstrated superior performance compared to several other contemporary optimization algorithms.

Conclusions:

  • The Walrus Optimization Algorithm offers a robust and efficient method for tuning FO-PID controllers in power systems.
  • The WaOA-tuned FO-PID controller significantly enhances power system stability, reliability, and power quality under various disturbances and parameter variations.