Economic Load Dispatch with Transmission Loss Using Lambda.

Solves Economic Load Dispatch with transmission losses using Lambda Iteration Method for optimal generator power allocation in a 3-unit.
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Updated 21 Apr 2025

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Economic Load Dispatch Considering Transmission Loss Using Lambda Iteration Method.
This submission provides a MATLAB implementation of the Economic Load Dispatch (ELD) problem considering transmission losses using the Lambda Iteration Method.
The key features of this code include:
  • Input-based demand and initial lambda value.
  • Cost function coefficients (constant, beta, and gamma) for three generators.
  • Incorporates individual transmission loss coefficients for each generator.
  • Iterative solution until power mismatch is minimized.
  • Plots of lambda convergence and generator output per iteration.
💡 Highlights:
  • Converges to an optimal lambda value.
  • Ensures generation meets the demand including losses.
  • Generator outputs remain within specified limits.
  • Helpful for power systems and energy optimization learners.
🧮 Input Parameters:
  • Initial lambda (Lagrange multiplier).
  • System load demand (in MW).
📈 Output:
  • Power output of each generator.
  • Number of iterations to convergence.
  • Final lambda value.
  • Lambda convergence plot.
  • Generator power allocation per iteration.

Cite As

Prem Manoj Mule (2025). Economic Load Dispatch with Transmission Loss Using Lambda. (https://se.mathworks.com/matlabcentral/fileexchange/180841-economic-load-dispatch-with-transmission-loss-using-lambda), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2024b
Compatible with R2020a and later releases
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes
1.0.0