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Related Concept Videos

Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
Multimachine Stability01:25

Multimachine Stability

Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

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:
Load-frequency control01:28

Load-frequency control

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...
Distributed Loads01:19

Distributed Loads

Distributed loads are a common type of load that engineers and scientists encounter in various practical situations. Distributed loads often refer to a type of load spread over a surface or a structure and can be modeled as continuous force per unit area.
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
Maximum Power Flow and Line Loadability01:23

Maximum Power Flow and Line Loadability

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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Related Experiment Video

Updated: May 26, 2026

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
06:04

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

A bankruptcy problem approach to load-shedding in multiagent-based microgrid operation.

Hak-Man Kim1, Tetsuo Kinoshita, Yujin Lim

  • 1Department of Electrical Engineering, University of Incheon / 12-1, Sondo-dong, Yeonsu-gu, Incheon, 406-840, Korea. hmkim@incheon.ac.kr

Sensors (Basel, Switzerland)
|December 14, 2011
PubMed
Summary

Load-shedding in islanded microgrids is framed as a bankruptcy problem. This study compares bankruptcy rules for effective resource allocation during power shortages, enhancing microgrid stability.

Keywords:
bankruptcy problemislanded operationload-sheddingmicrogridmultiagent system

Related Experiment Videos

Last Updated: May 26, 2026

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
06:04

Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator

Published on: February 14, 2025

Area of Science:

  • Electrical Engineering
  • Computer Science
  • Operations Research

Background:

  • Microgrids require stable frequency, especially in islanded mode, necessitating control of distributed generation (DGs) and energy storage (DSs).
  • Load-shedding, a critical aspect of islanded microgrid operation, involves intentionally reducing electricity consumption during supply shortages.
  • Multiagent systems are increasingly studied for autonomous microgrid management, highlighting the need for effective load-shedding strategies.

Purpose of the Study:

  • To address the critical challenge of load-shedding in multiagent-based islanded microgrids.
  • To conceptualize and evaluate load-shedding as a resource allocation problem analogous to the bankruptcy problem.
  • To compare the efficacy of established bankruptcy division rules for optimizing load-shedding outcomes in microgrids.

Main Methods:

  • Framing the microgrid load-shedding problem as a bankruptcy problem, where limited resources (power) must be allocated among agents (loads).
  • Implementing and comparing three bankruptcy division rules: constrained equal awards (CEA), constrained equal losses (CEL), and random arrival (RA).
  • Utilizing a wireless sensor network (WSN) to facilitate agent interactions and communication within the islanded microgrid environment.

Main Results:

  • The study provides a comparative analysis of load-shedding performance using different bankruptcy rules in an islanded microgrid.
  • Results demonstrate how various division rules impact resource allocation and stability during power deficit conditions.
  • The effectiveness of applying bankruptcy problem solutions to microgrid load-shedding scenarios is evaluated.

Conclusions:

  • Load-shedding in islanded microgrids can be effectively modeled and managed using bankruptcy problem principles.
  • The choice of bankruptcy division rule significantly influences the outcome of load-shedding strategies.
  • This research offers a novel approach to enhance the operational stability and reliability of autonomous microgrids.