IMPROVEMENT AND DESIGN OF 220 kV AUTOTRANSFORMER STANDBY PROTECTION

摘要

The construction of double-selectivity autotransformer remote protection is described. Its logical protection, which covers the whole autotransformer, acts without a time lag, which is particularly important when disconnecting short-circuits inside the autotransformer tank. The design of the operating arrangement of the standby protection from short circuits is described.