TAP CHANGING FOR A POWER TRANSFORMER OF A WIND TURBINE ELECTRICAL POWER SYSTEM
- Inventors:
- Manex Barrenetxea Iñarra
- Jose Maria Canales Segade
- PRZYBILLA JENS
- SCHIELE JUERGEN
- RODRIGUEZ VAZQUEZ MIGUEL
- SANTODOMINGO LLAMAS FERNANDO
- SIEMENS GAMESA RENEWABLE ENERGY INNOVATION & TECHNOLOGY SL
- INFINEON TECH BIPOLAR GMBH & CO KG
WO2022229065A1 (03-11-2022)
EP4083744A1 (02-11-2022)
EP4309020A1 (24-01-2024)
AU2022264819B2 (26-09-2024)
AU2022264819A1 (09-11-2023)
BR112023022539A2 (02-01-2024)
WO2022229065A1 (03-11-2022)
WO2022229065A1 (30-04-2021)
Abstract
A control system configured to control the switching of taps (25-27) of an on-load tap changer (30) provided on an electric power transformer (20) is provided. The on-load tap changer (30) comprises switches (32) that are controllable to switch between transformer taps. The control system (10) comprises a detector (12) configured to detect an indication of a zero crossing of a transformer voltage of the transformer (20) and a control signal generator (13) configured to generate a control signal that controls a switching of the switches (32) for performing a tap change to a new transformer tap. The control signal generator (13) is configured to determine the timing of the control signal for changing the transformer tap (25-27) based on the detected indication of the zero crossing of the transformer voltage such that the switching of at least one of said switches (32) for performing the tap change occurs a predetermined time (71) prior to a zero crossing of a tap voltage at the new transformer tap, the predetermined time (71) being less than 40% of the duration of an electrical period of the tap voltage.