变电站直流应急电源开发与设计

Development and Design of DC Emergency Power Supply for a Substation

直流电源系统是变电站二次核心设备,是进行控制与保护的基础,为变电站中的控制装置、保护装置等提供工作电源。当变电站的交流电源失效后,作为应急电源,直流电源系统能够对变电站的安全性、稳定性、可靠性产生关键性影响。本文设计了一种直流应急电源,能够在紧急情况下为变电站的二次设备提供电能,保证二次设备工作的连续性。该直流应急电源采用了高频开关技术,具有体积小、功耗低、可靠性高的特点,能够在变电站的日常运行中发挥重要作用,宜进行大规模推广应用。

A DC power system is the secondary core equipment of a substation, which is the basis for control and protection, providing working power for control devices and protection devices in the substation.When the AC power supply of the substation fails, as an emergency power supply, the DC power system can have a critical impact on the safety, stability and reliability of the substation.In this paper, a DC emergency power supply is designed to provide power to the secondary equipment of the substation in case of emergency and to ensure the continuity of the secondary equipment.The DC emergency power supply adopts high-frequency switching technology, with the characteristics of small size, low power consumption and high reliability, which can play an important role in the daily operation of substations and is suitable for large-scale application.