Repozytorium publikacji - Politechnika Gdańska

The article presents two new algorithms of controlled switching the power transformer. The main aim of the paper is to obtain formulas that determine the moments of closing of the circuit breaker poles. The study contains projects of control systems for both algorithms. Mathematical formulas for the time instants of the breaker poles closing were developed on the basis of electric circuit theory and magnetic circuit theory. The presented systems were simulated using a model created in the ATP/EMTP software. Numerical simulations have proved that the shown systems properly perform the controlled switching carried out in accordance with the proposed algorithms. The times of the poles closing were correctly determined and the inrush currents were reduced to a level of the current of unloaded transformer., while the solutions presented in the literature provide a reduction of inrush current to a value comparable to the rated current of the transformer, which is tens times greater than the no-load current. Additional achievement of the work is the development of analytical formulas that determine the times of the breaker poles closing.

Autorzy

• dr hab. inż. Jacek Horiszny link otwiera się w nowej karcie