供电系统对继电保护的基本要求

电力系统发生故障或出现不正常运行状态时,为了在极短时间内切断故障电路,并维持非故障设备的继续工作,必须采用继电保护装置。为了使继电保护装置能较好地发挥作用,能及时、正确地完成它所担负的主要任务,供配电系统对继电保护提出了选择性、速动性、灵敏性和可靠性要求。

Basic Requirement for Relay Protection of Power Supply System

In order to cut off the fault circuit in a very short period of time and maintain the continued work of non-faulty equipment when power system failure or abnormal operating,protection devices must be used.In order to make protection device can play a better role,timely and correctly complete its main tasks,the distribution system proposed requirements of selectivity,speed and mobility,sensitivity and reliability of relay protection.