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Related Concept Videos

Load-frequency control01:28

Load-frequency control

143
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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Turbine-Governor Control01:17

Turbine-Governor Control

187
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
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Generator Voltage Control01:21

Generator Voltage Control

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Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand,...
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Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

180
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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Control of Power Flow01:30

Control of Power Flow

257
There are several methods to control power flow in power systems:
257
Wind Turbine Machine Models01:24

Wind Turbine Machine Models

117
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
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Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
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A SSA-based CFFOPID drop deloaded tidal turbine controller using HVDC-link.

Yogendra Arya1, Kavita Singh2

  • 1J.C. Bose University of Science and Technology, YMCA, Haryana 121006, India.

ISA Transactions
|August 7, 2024
PubMed
Summary

Integrating tidal power plants with diesel engine generators improves micro-grid stability. A novel fuzzy fractional order PID controller and high voltage direct current link enhance frequency regulation, reducing undershoot and settling time.

Keywords:
Cascade controllerFrequency regulationHVDC linkSalps swarm algorithmTidal power plant

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Area of Science:

  • Electrical Engineering
  • Renewable Energy Systems
  • Control Theory

Background:

  • Increasing integration of tidal power plants (TPPs) in power systems presents frequency stability challenges due to low rotor mass.
  • Conventional diesel engine generators (DEGs) offer frequency support but require integration strategies with TPPs in micro-grids.

Purpose of the Study:

  • To enhance system frequency regulation in multi-area micro-grids with TPPs and DEGs.
  • To propose an advanced control strategy for improved dynamic response and stability.

Main Methods:

  • Implementation of a cascade fuzzy fractional order PID-ID with derivative filter (CFFOPID-IDF) droop controller for TPPs in the deloaded region.
  • Optimization of controller gains using the Salp Swarm Algorithm.
  • Adoption of a precise high voltage direct current (AHVDC) link with inertia emulation-based control (INEC) for enhanced frequency regulation.

Main Results:

  • The proposed CFFOPID-IDF controller and AHVDC-INEC scheme significantly reduced undershoot (34%/20.63%/43.75%) and settling time (20.45%/59.09%/16.83%) for frequency and tie-line power variations.
  • Demonstrated superior performance compared to conventional AC tie-line interfaces and other existing control techniques.
  • Achieved the least cost function among compared control methods.

Conclusions:

  • The novel control scheme effectively improves frequency stability in hybrid micro-grids integrating tidal and conventional power sources.
  • The AHVDC link with INEC provides a robust solution for dynamic response enhancement and energy utilization for frequency regulation.
  • The proposed approach offers a highly stable and cost-effective solution for modern power system challenges.