一款多功能在线式变电站直流母线防失压装置的研制

Development of A Multi-function Online Substation Dc Bus Anti-loss Device

变电站直流系统的直流母线在运行中因电源供给故障或者误操作等原因失压,会导致保护及自动化装置失电,断路器失去分合闸电源而拒动,无法及时切除故障.本文提出一款多功能在线式变电站直流母线防失压装置,在直流母线异常时,可以短时间内承担直流母线的应急供电,保证直流母线带载供电的连续性,避免直流母线的失压造成事件的升级,提高直流系统的可靠性,降低由于蓄电池问题带来的风险.

The DC bus of the substation DC system loses pressure during operation due to power supply failure or misoperation.It will cause the protection and automation equipment to lose power.The circuit breaker loses the switching power supply and refuses to move,and the fault cannot be removed in time.This paper proposes a multi-function online substation DC bus anti-loss device.When the DC bus is abnormal,it can bear the emergency power supply of the DC bus in a short time,ensure the continuity of the DC bus load power supply,and avoid the DC bus voltage loss.The upgrade of the event improves the reliability of the DC system and reduces the risk caused by the battery problem.