数据中心冗余电气架构下的继电保护整定

Relay Protection Setting Under the Redundant Electrical Architecture of the Data Center

数据中心电气架构多为冗余配置,通过自动逻辑实现高压母联、低压母联、柴发电源等备用电源的自动投入,从而实现供电系统冗余可用。开关设备、柴发侧开关设备继电保护整定在满足规范标准整定原则的前提下,结合备自投判据及故障闭锁需求,合理设置保护级差。同时,结合市电带载与柴发带载在不同运行模式下的状态,合理设定保护定值,实现市电侧带载与柴发侧带载运行状态保护定值的有效配合。

The electrical architecture of the data center is mostly redundant,and the standby power sources such as high-voltage bus,low-voltage bus and diesel power are automatically put into use through automatic logic,thus realizing the redundant availability of the power supply system.On the premise of meeting the setting principles of specifications and standards,the relay protection setting of switchgear and diesel-generator side switchgear,combined with the criteria of standby automatic switching and the requirements of fault locking,should set the protection level difference reasonably.At the same time,the protection setting value is set reasonably by combining the states of the mains load and the diesel-generator load in different operation modes,so as to realize the effective cooperation of the protection setting values of the mains load and the diesel-generator load.