Simulation of power supply systems with external faults and methods for increase of residual voltage at terminals of power receivers

The article discusses the effect of the remoteness of the place of a three-phase short circuit on the depth of the voltage dip depending on the load on the synchronous generators and synchronous motors. A series of experiments was carried out where the length of the 110 kV overhead power line varies...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-05, Vol.860 (1), p.12007
Main Authors: Bakhteev, K R, Fedotov, A I, Sh Misbakhov, R
Format: Article
Language:English
Subjects:
Eddy currents
Electric potential
Electric power supplies
Environment models
Load distribution (forces)
Power lines
Programming environments
Rotors
Short circuits
Simulation
Stress concentration
Synchronous machines
Synchronous motors
Voltage
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Summary:The article discusses the effect of the remoteness of the place of a three-phase short circuit on the depth of the voltage dip depending on the load on the synchronous generators and synchronous motors. A series of experiments was carried out where the length of the 110 kV overhead power line varies, at the end of which a short circuit occurs, as well as the load distribution coefficient of a synchronous machine with higher than normal field-forcing ratio and the influence of these parameters on the level of residual voltage among large industrial consumers. The efficiency of using synchronous machines with a higher than normal field-forcing ratio of the excitation is estimated, and their stability under a sharp increase in loads, which cause voltage changes during the transition process and cause rotor vibrations, accompanied by magnetic losses due to the occurrence of eddy currents in the rotor core, is considered. The results of simulation presented in the Simulink are a MATLAB-based graphical programming environment for modeling, simulating and analyzing multi-domain dynamical systems.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/860/1/012007