Operación del sistema de potencia a escala del laboratorio físico de Sistemas Eléctricos de Potencia : operación de los sistemas trifásicos de transmisión eléctrica: transformador LTC en serie con línea sin transposición y transformador PST en serie con línea con transposición.

Abstract

The present work contains the results of the tests carried out on the equipment available in the Physical Laboratory of Electrical Power Systems. The voltage ratio for each of the taps in the following equipment is checked: transformer with voltage control, transformer with angle control, autotransformer, single-phase transformers in open delta connection. In transformers with voltage control and angle control, the correct operation of the OLTCs is checked. To carry out the test, the transformer is connected to a load and the tap change is made for each of its positions. It is verified that when the tap change is made there is no power cut at the time of making the change. A procedure is elaborated for the individual operation of the transformers and when they are in conjunction with the transmission lines. The correct operation of the scale models of the 500 kV transmission lines is verified and they are operated, each one of them, separately and the two lines in parallel. A procedure is developed for the operation of the two corridors individually and in parallel. Through these transmission lines, the loads available in the laboratory are fed through the single-phase transformers in open delta connection and then replaced by the autotransformer. To carry out measurements of current, voltage, power, voltage shifts, harmonics and circulating currents. The correct operation of the autotransformer is checked, the voltage relationship between its windings is checked, this test is performed for each of the available taps.