Physical Modeling of Power Unit in Power Plant with Auxiliary Transformer

: pp. 15 – 22
Received: March 22, 2019
Revised: April 03, 2019
Accepted: May 23, 2019
Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University

The article shows the option of the first degree transformation scheme in auxiliary power supply systems of the power unit (PU). The power supply to the auxiliary receivers is carried out from the generator through the working and additional working auxiliary transformers (AAT). The method of switching on the latter one provides its operation in the source mode set by the PU current load. Experiments were carried out on a static physical model of the scheme fragment of the auxiliary power supply system with an AAT. It is confirmed that its natural properties, in contrast to the traditional schemes, provide during the normal modes, modes of external short circuits the level of voltage on the busbars, sufficient for the reliable operation of their electrical receivers. The possibility of effective research with the use of appropriate mathematical and digital models has been proved. The high adequacy of the results has been confirmed.

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H. Lysiak, O. Pastukh, B. Kharchyshyn. Physical modeling of power unit in power plant with an auxiliary transformer. Energy Engineering and Control Systems, 2019, Vol. 5, No. 1, pp. 15 – 22.