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2 Computer Applications in Electrical Engineering

2 Fajfer M.

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The real-time simulation of an electric systems – the simulation stability

Fajfer M.

Computer Applications in Electrical Engineering

2015

Vol. 13

65--76

The paper presents the results of a research of the impact of numerical integration algorithm and the method of solving the system of linear equations for the stability of the simulation of electric circuit in steady states and transient states. Stability criteria was explained. Mathematical modeling algorithm of the electric power line (steady states and transient states) was presented with elements of concurrent computing. The goal is to create a mathematical model of the electric circuit that will meet the requirements of the models used in simulators working in real time.

Medium voltage electrical system research using DSP-based real-time simulator

Fajfer M.

Computer Applications in Electrical Engineering

2014

Vol. 12

334--352

The paper presents the results of a simulation of operating conditions of a two-sectioned medium-voltage power line, with the use of a simulator based on a multi-core signal processor. It is a kind of type of a real-time digital simulator of electrical system. Steady states and transients were analyzed, as well as the switching operation of the load with zero initial conditions. The transient states of this electrical system was also analyzed during one and multi phase short-circuit. The oscillograms of steady and transient node system voltages and currents registered during simulator work were presented. The obtained results were compared to the ones received via Matlab simulation package. The estimated maximum errors of the simulator in steady and transition states were presented. The method of simulation, which is used in the implementation of discreet mathematical models of the complex electrical systems in real-time simulators, was applied. The main advantage of the simulator is the ability of its cooperation with real devices (e.g. regulators).