二次放电在线检测蓄电池内阻  

On-line Detection of Battery Internal Resistance Using Twi-discharge

作　　者：黄海宏[1] 王海欣[1] 吴黎丽[1] 唐海源[1] 

机构地区：[1]合肥工业大学电气学院,安徽省合肥市230009

出　　处：《电力系统自动化》2007年第15期89-93,共5页Automation of Electric Power Systems

摘　　要：蓄电池组是变电站直流操作电源系统的重要组成设备,在交流停电时为负载提供不间断电源。重要的变电站要求配置蓄电池监测装置实时监测蓄电池的状态。介绍了一种基于RS-485总线结构的分布式蓄电池监测装置,该装置由若干测试单元和一台监测单元组成。每节蓄电池配备一台测试单元,测试单元内置自带A/D转换器的单片机,实时检测匹配的蓄电池端电压。监测单元带站号召唤测试单元获取数据,并下发内阻检测命令,测试单元采用二次瞬间大电流放电的方法实现在线检测对应的蓄电池内阻。The battery bank is an important device in a substation DC operation system, which supplies uninterrupted power for loads when the AC power is off. It is required to install real time battery status monitoring devices in all important substations. A RS-485 bus based distributed monitor device, comprising several measuring units and an inspector, is presented. Each battery is equipped with a measuring unit and each unit contains a single chip microcomputer with AD function to monitor the battery terminal voltage. The monitor unit calls up to get real time data from the measuring unit, and sends internal resistance detection commands to it. The measuring unit detects corresponding battery internal resistance on-line using twi-discharge method.

关 键 词：蓄电池内阻 二次放电 RS-485总线 测试单元 通信站号 

分 类 号：TM912[电气工程—电力电子与电力传动]