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

EasyChair Preprint no. 9990

Abstract

Alternative solutions to the problem of inrush currents when the power circuit breaker 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 seconds (s) respectively of two scenarios; high and low hydrology of the 138 and 230 kV patios, giving more impact to the high hydrology scenarios for the patios, giving as results for the energization of the capacitor bank for phase B in the time of 0.038 s an inrush current of; 3.452 in per unit (PU) at the generator terminals, and 3.833e-16 ≈ 0 in PU in the capacitor bank without the CSD. After obtaining these results, the CSD was applied, resulting in; -6.263e-09 ≈ 0 in PU at the generator terminals, and -3.089e-25 ≈ 0 in PU in the capacitor bank within the opening and closing range of the CB. In the energization of the power transformer for phase B in a time of 0.0055 s, inrush currents of -5.643 were obtained in PU at 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 as a result -1.108e-09 ≈ 0 in 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 CELEC EP TRANSELECTRIC.

Keyphrases: capacitor bank, Controlled Switching Device, inrush currents, power transformer

@Booklet{EasyChair:9990,
  author = {Kevin J. Negrete Durazno and Ben Cevallos Mieles},
  title = {Simulation Of Synchronized Controls in Circuit Breakers of Power Transformers and Operation of Reactive Compensation Banks},
  howpublished = {EasyChair Preprint no. 9990},

  year = {EasyChair, 2023}}