Simulation of Synchronized Controls in Circuit Breakers of Power Transformers and Operation of Reactive Compensation Banks

Alternative solutions to the problem of inrush currents, when the power circuit breaker (CBs) actuates were evaluated using SIMULINK with the VIZIMAX SynchroTeq Plus controlled switching device (CSD) with an opening and closing range of 0 to 0.038 s (s) respectively of two scenarios; high and low hydrology of the 138 and 230 kilovolts (kV) patios, giving more impact the high hydrology scenarios in general, giving as results for the energization of the capacitor bank for phase B at the time of 0.038 s an inrush current of; 3.452 per unit (PU) at the generator terminals, and 3.833e−16 ≈ 0 PU in the capacitor bank without the CSD. After obtaining these results, the CSD was applied, resulting in; −6.263e−09 ≈ 0 PU at the generator terminals, and −3.089e−25 ≈ 0 PU in the capacitor bank within the opening and closing range of the CBs. In the energization of the power transformer for phase B in a time of 0.0055 s, inrush currents of −5.643 PU were in the generator terminals corresponding to the primary side of the power transformer without the CSD. After obtaining these results, it was applied the CSD between the generator and the transformer giving a result −1.108e−09 ≈ 0 PU in the terminals of the generator corresponding to the primary side of the transformer, it is possible to identify that the use of the CSD in an electrical substation would be a great contribution for Electric Corporation of Ecuador Public Company (CELEC EP) TRANSELECTRIC.