Online Virtual Electric Power System Laboratories

Web-based Transient Stability
Simulation LAB

This simulation solves n-nonlinear differential equations that model the dynamics of interconnected synchronous generators using the 'deSolve' R package. Its not just a simulation tool, its a virtual lab online with real-time synchronous collaboration, lab manuals and quizzes integrated with Moodle.
See video demo here

Web-based Power Flow
Simulation LAB

The Power Flow Lab is preloaded with 4 IEEE test systems that can be selected using a drop-down list. Once selected, the power flow for that test system is automatically run. This simulation solves a set of nonlinear algebraic equations that describe a power system using the Accelerated Gauss-Seidel, Newton-Raphson and Peturbation-theory iterative techniques. The perturbation theory technique requires further development for perfect results on ill-conditioned systems. Fast Decoupled and DC techniques are under development.
See app here

Web-based Fault Analysis
Simulation LAB

The simulation lab is depends on power flow simulation. It simulates a 3-phase bolted fault for an interconnected power system and also makes provision for complex fault impedance. The Zbus building algorithm was implemented to construct the impedance matrix.
See app here

Online Coherent Generators
Simulation LAB

Surprised to see this lab here? Yeah, you could hardly find a simulation tool that simulates fault-based coherent generators - there are some on slow coherency which are not fault based. The Equal Velocity and Acceleration technique is deployed to obtain coherency indices. The concepts of power deviation and electrical proximity have also been implemented. Interestingly, you could view all the necessary matrices and indices that make up a final solution. This version appears to be most valuable to students who should be able to interpret the required indices.
See app in action here

Web-based Load Freq.
Control Simulation LAB

This is a visual tool that is freely available for your academic exercises. It is preloaded with a case similar to one found in a lecture material on "Operation and Mgt of Power Systems". Sliding the bar automatically changes the load on the selected area, and load frequency control is automatically initiated based on the speed droop settings of the areas. The areas share the load by changing their generation levels based on their preset percentage contributions.
See app here

Web-based Transformer Circuits
Simulation LAB

The transformer equivalent circuit that is showing on your left is interestingly interactive. Whenever any parameter is updated, the values on the circuit are recomputed. When the turns ratio is reversed the colours on some circuit elements are changed to distinguish the HV and LV sides. There's actually no button to click here.
See app here

More Simulation Labs

We have created simulation labs for:

  • Economic Dispatch and Optimal Power Flow (by Lambda Iteration technique)
    *On-going experiments for Linear & Quadratic programming techniques using the 'Quadprog' and 'Rglpk' packages
  • Tranmission Line Calculations
  • Synchronous Machine Transient Analysis.
    See app here
  • N-1 Contingency Analysis
  • Time-domain Simulation and Equal Area Criterion for SMIB system. Watch video demo

Upcoming are:

  • Unit Committment
  • Symmetrical components and unbalanced faults
  • Unbalanced short circuits for Synchronous Machine transient analysis
  • Induction motor analysis
  • Equal Angular Deviation technique for Coherency Identification

Theoretical/Mathematical formulations behind the simulations are upcoming

RPowerLABS is used by:

Electrical Engineering Dept.,

Purpose: Virtual Laboratory Studies for Power Engineering

Flavio G. C, (PhD computer scientist)
Purpose: Doctoral Research on Computational Intelligence for Smart Grids
Read more here