【摘要】 传统的电流速断保护和现有的自适应电流速断保护不能保护线路全长,且其保护范围会随系统运行方式的变化而改变。在分析这两种保护的保护范围的基础上,给出了一种可保护线路全长的自适应电流速断保护原理:借助于通信手段发送相邻保护的短路功率方向信号以确保选择性的自适应电流速断保护,并将其性能与前两种电流速断保护的性能进行了比较。更多还原

【Abstract】 Conventional current instantaneous trip protection (CCITP) and developed adaptive current instantaneous trip protection (DACITP) cannot protect the whole range of the line and the protection ranges vary with the change of operational mode of power system. On analyzing protection range of the two types of relay protection, adaptive current instantaneous trip protection (ACITP), which can protect the whole range of the line is described. It can transfer orientation signals of short-circuit power in communication way to ensure protection favorable selectivity. Additionally a briefly comparison of performances is presented between ACITP with CCITP and DACITP.更多还原