变电站直流系统蓄电池组自动投入装置的研发与应用

Development and Application of Battery Automatic Switching Device in Substation DC System

设计了基于蓄电池组充电机电压比较法的变电站直流系统蓄电池组自动投入装置,该装置可对蓄电池组与充电机的电压进行同时监测、实时比较,一旦蓄电池组电压低于充电机电压一定值时就立即动作,可靠连接蓄电池组与直流母线,既能实时监测蓄电池组与直流母线的连接状态,又能保证在蓄电池组不正确脱离直流母线后迅速、安全、正确、可靠地投入直流系统,确保二次设备的工作电源可靠供应。实际应用证明该装置安全、有效。

In this paper,a battery automatic switching device for the DC system of the substation based on the voltage comparison method of the battery pack charger is designed.The device can simultaneously monitor and compare the voltage of the battery pack and the charger in real time.Once the voltage of the battery pack is lower than a certain value of the charger voltage,it will operate immediately.The device can reliably connect the storage battery and DC bus.It can not only monitor the connection state of the storage battery and DC bus in real time,but also ensure that the storage battery can switch into the DC system quickly,safely,correctly and reliably after it is not separated from the DC bus correctly,which ensure the reliable supply of working power for the secondary equipment.Practical application proves that the device is safe and effective.