舰船大容量变压器励磁涌流的故障识别

舰船电力系统已经逐步由传统的低压电力系统过渡到中压电力系统,变压器在舰船电力系统中地位和作用也日益凸现,对变压器的保护也日益重要,尤其是在发生短路故障时,迅速可靠的跳闸,是保证变压器安全的重要手段。大容量变压器的内部短路故障主要依靠差动保护,而励磁涌流往往会引起差动保护误动作,因此如何快速识别励磁涌流是确保变压器安全可靠的前提条件。

The Identification of Excitation Surge of Large Capability Transformer for a Ship

With the development of ship power system from traditional low voltage power system to medium voltage power system, the effect of transformer is becoming more and more important, and transformer protection is becoming more and more important too. When short circuit happened, cutting off the circuit is the most effective measure to deal with the fault for transformer protection. Excitation surge always bring the mistake of breaker, so how to identify the excitation surge is the precondition of reliable action of transformer current different protection.