A REPLACING METHOD OF TRANSFORMER FOR AN ELECTRIC CONSUMPTION FACILITY OF HIGH VOLTAGE WITHOUT INTERRUPTING POWER SUPPLY

摘要

An uninterruptible replacing method of a transformer for high voltage consumer is provided to prevent discomfort or economic losses of low voltage consumers by rapidly replacing a transformer for high voltage consumer in non-power failure condition of the low voltage consumer. A transforming train(70) moves to a building for high voltage consumers. A by-pass cable(71) connected to the secondary side of the transforming train is installed at a switchgear. The transforming train is connected to a primary side(high voltage side) of a peripheral transformer(80). First and second switches of the transforming train are successively turned on. Therefore, the power source is supplied to the transforming train. The secondary side(low voltage side) of a transformer(20) for replacement and the by-pass cable are looped together. A breaker(30) of the switchgear is turned off. The primary side terminal of the transformer for replacement is separated. The new transformer is installed.