DOUBLE DEAD BAND TAB SWITCH FOR TRANSFORMER AND CONTROL METHOD

摘要

The present invention relates to a tap switch control method, which comprises the steps of: measuring data of a distribution system; calculating a second dead band and a reference voltage using the measured data; comparing the difference between the measured actual voltage and the reference voltage with a first dead band; comparing the difference between the actual voltage and the reference voltage with the second dead band, when the difference between the actual voltage and the reference voltage is outside the first dead band as a result of the comparison with the first dead band; and controlling the tap of the transformer, when the difference between the actual voltage and the reference voltage is outside the second dead band as a result of the comparison with the second dead band. Accordingly, it is possible to suppress a frequent operation of tap switching due to the fluctuations of the system and distributed power supply by applying the double dead band and to ensure the transformer's lifespan.

主权项

1. A tap switch control method, comprising:
measuring data of a distribution system; calculating a second dead band and a reference voltage using the measured data; comparing the difference between the measured actual voltage and the reference voltage with a first dead band; comparing the difference between the actual voltage and the reference voltage with the second dead band, when the difference between the actual voltage and the reference voltage is outside the first dead band as a result of the comparison with the first dead band; and controlling the tap of the transformer, when the difference between the actual voltage and the reference voltage is outside the second dead band as a result of the comparison with the second dead band.