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Related Concept Videos

Load-frequency control01:28

Load-frequency control

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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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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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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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Maximum Power Flow and Line Loadability

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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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Fast Decoupled and DC Powerflow01:24

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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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An Interoperable Communication Framework for Grid Frequency Regulation Support from Microgrids.

Lilia Tightiz1, Hyosik Yang1, Hassan Bevrani2

  • 1Department of Computer Engineering, Sejong University, 209, Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea.

Sensors (Basel, Switzerland)
|July 20, 2021
PubMed
Summary

This study presents a communication framework enabling microgrids to support power grid frequency regulation. It ensures reliable, secure, and low-latency interactions using IEC 61850 and IoT protocols for enhanced grid stability.

Keywords:
IEC 61850data distribution servicesfrequency regulationmicrogridvariable of interests

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Area of Science:

  • Electrical Engineering
  • Computer Science
  • Power Systems

Background:

  • Renewable energy integration requires robust communication for grid stability.
  • Microgrids can provide frequency regulation services to the main power grid.
  • Existing communication architectures often lack the necessary specifications for frequency regulation.

Purpose of the Study:

  • To propose a communication framework for integrating microgrids into power grid frequency regulation.
  • To ensure reliable, secure, and low-latency communication between microgrid controllers and the main grid management system.
  • To establish an interoperable information model based on IEC 61850 standards.

Main Methods:

  • Developed a communication framework emulating IEC 61850 information models.
  • Utilized IoT's Data Distribution Service (DDS) for wide-area network communication.
  • Implemented and tested the framework on a real communication testbed.

Main Results:

  • The proposed framework facilitates microgrid participation in frequency regulation.
  • Evaluated communication performance, measuring latency, reliability, and security.
  • Demonstrated the framework's ability to meet stringent communication requirements.

Conclusions:

  • The developed communication framework enables effective microgrid support for power system frequency regulation.
  • The IEC 61850-based information model ensures interoperability between microgrids and utility grids.
  • The use of IoT DDS satisfies critical communication needs for wide-area grid management.