Application of comprehensive back up protection device of hoist 浅谈提升机综合后备保护装置
B dep - 535 backup protection for transformers 2dep 535变压器后备保护
Circuit local backup protection 自端入力后备保护
Dep - 535 is used as backup protection for transformers of 110kv or below voltage levels Dep 535微机主变后备保护装置适用于110kv及以下电压等级变压器的后备保护。
But the backup protection is still made up of simple protections based on the traditional principle 而对于后备保护,基本上仍然是由一些基于传统原理的较为简单的保护所构成。
Agent protection can prevent the maloperation and accelerate the backup protection . the maloperation of this protection is not a common phenomenon 大型电站agent保护对于保护整体性能的提高主要体现在防止保护的不正确动作和加快后备保护的动作速度。
Backup protection backup protection consists of protective devices , which are intended to operate only after other protective devices have failed to operate or detect a fault 后备保护装置后备保护装置是在其他保护装置动作失败或发生故障时动作的保护装置。
Mode , e . g . , it can be used for high voltage side , medium voltage side , or low voltage side , the corresponding protection function can be selected by different control word 即高中低三侧后备保护通用,在分别作为高中低压侧的后备保护时可通过控制字投退相应的保护。
The method can guarantee distance protection will not have a wrong operation and enlarge the fault ' s range when the power flow of electricity grid diverts in a wide scope 该方法能够可靠保证在电网潮流发生大范围转移时后备保护不误动作,避免引发连锁反应,扩大电网事故。
This paper brings forward the cooperation scheme of the line backup protection and differential protection of main transformer ; this scheme can improve the performance of the protection 本文提出了对线路后备保护以及对主变差动保护的协调方案,该方案能够在特定情形下改善保护的性能。