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
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
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
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
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
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
We have created simulation labs for:
Upcoming are:
Theoretical/Mathematical formulations behind the simulations are upcoming
Electrical Engineering Dept.,
Purpose: Virtual Laboratory Studies for Power Engineering
Flavio G. C, (PhD computer scientist)
UFBA/UNIFACS, Brasil
Purpose: Doctoral Research on Computational Intelligence for Smart Grids
Read more here
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