直流系统直流多支路快速接入箱的研究应用

Research and Application of DC Multi Branch Fast Access Box in DC System

变电站作为电网重要汇流节点和能源传输分配中转站,其安全稳定运行关系到供电可靠性和电网安全性。变电站直流电源系统是变电站继电保护等二次设备的重要电源提供者,其运行可靠与否直接关系到变电站的安全稳定运行。应急抢修工作和更换站内直流电源系统由于没有专门的应急转接箱,导致工作开展较为困难。在以往的工作实践中,配电柜本身存在体积大、携带困难以及安全性差等问题。因此,设计了一种多支路快速接入箱,具有体积小、重量轻以及保护能力强等诸多优点。

As an important power grid convergence node and energy transmission and distribution transfer station,the safe and stable operation of substation is related to power supply reliability and grid security,involving the interests of thousands of households.Substation DC power supply system is an important power supply provider for substation relay protection and other secondary equipment.Its operation reliability is directly related to the safe and stable operation of substation.It is difficult to carry out the emergency repair work and replace the DC power supply system in the station because there is no special emergency transfer box.In the past work practice,the distribution cabinet itself has the problems of large volume,difficult to carry and poor security.Therefore,a multi branch fast access box is designed,which has the advantages of small volume,light weight and strong protection ability,and is worthy of promotion and popularization.