The simulation of transient processes in the complex load node with powerful induction motors at the moment of power loss is carried out. For the modeling the method of synthetic schemes (Dommel's algorithm) was used. Calculations are carried out within the dynamic model of motors in phase coordinates. The results of simulation and analysis modes of the load node with two induction motors connected to the electric buses of 10 kV and fed through a step-down transformer with 16 MVA capacity are presented. The applied model of power transformer consists of inductively coupled branches. The features of single and joint run-out of motors with different torque of mechanical loads are analyzed. Estimates of the parameters and time intervals at which the run-out of the motors is close to synchronous are obtained, the features of energy recuperation and the interaction of the motors in the load node are analyzed.
Industrial automation networks based on the EIB / KNX protocol are very popular among European companies in the construction of intelligent buildings, but they are of little interest in high school education and currently professional specialists are not trained to use them. Developing the KNX‐based automation system simulator for the training of engineering students is required. We have designed and installed a KNX simulator for engineering students training on smart systems. The presented stand was developed on Siemens LOGO! Basic with CM KNX communication modules. The modules of simulator and KNX software programming tool ETS are explained. Besides, sample scenarios for engineering students to enhance and implement their projects are given.
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