变电站蓄电池组开路保护方法研究

Research of Protection Method for Substation Battery Open Circuit

蓄电池是变电站直流系统的重要应急电源,一旦开路将对整个变电站的电源安全构成严重威胁。针对变电站蓄电池存在开路问题,提出一种蓄电池开路自动保护方法,通过分析蓄电池组开路时蓄电池内阻、端电压、充放电电流、续流二极管导通情况等,判断该蓄电池是否存在开路,若存在开路情况通过保护装置闭合继电器短接该开路蓄电池,从而保证整个蓄电池组正常运行。蓄电池开路保护为解决变电站蓄电池发生开路提供了一种快速、自动的处理方法,对于变电站直流蓄电池电源安全具有重要意义。

Battery is an important emergency power in substation DC system. Once battery open circuit, it is a threaten for substation power safe. In order to solve this problem, an automatic protection method for substation battery open circuit is proposed. By analyzing battery internal resistance, voltage, charge current, discharge current and diode to make sure whether the battery is open circuit. If there is an battery open circuit, the protection shorted it, and the other batteries can be working. The protection method for substation battery open circuit gives a quick automatic approach to solve battery open circuit, which is very important for the safety of substation DC system.