矿井低压电网选择性漏电保护系统总体设计与实现

设计了一款以dsPIC30F4012为主控制器、PIC16F877A为从处理器的新型主从式选择性漏电保护系统。该系统在总开关处采用附加直流源检测原理检测是否发生漏电,在分支开关处使用零序功率方向检测原理判断发生漏电故障线路,给出了保护系统的硬件框图和软件流程图,并且采用速度更快的RS—485总线及光纤传输技术,实现了矿井低压电网漏电保护的瞬动性。实验结果验证了该保护系统的优越性能。...

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Bibliographic Details
Published in中国工程科学 Vol. 14; no. 7; pp. 93 - 97
Main Author 孙玉坤 朱志莹 黄振跃 唐平
Format Journal Article
LanguageChinese
Published 南京工程学院,南京211167 2012
江苏大学,江苏镇江212013%江苏大学,江苏镇江,212013
Subjects
dsPIC30F4012
PIC16F877A
RS—485总线
光纤通信
漏电保护
选择性
PIC16F877A
光纤通信
漏电保护
RS-485总线
dsPIC30F4012
选择性
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Summary:设计了一款以dsPIC30F4012为主控制器、PIC16F877A为从处理器的新型主从式选择性漏电保护系统。该系统在总开关处采用附加直流源检测原理检测是否发生漏电,在分支开关处使用零序功率方向检测原理判断发生漏电故障线路,给出了保护系统的硬件框图和软件流程图,并且采用速度更快的RS—485总线及光纤传输技术,实现了矿井低压电网漏电保护的瞬动性。实验结果验证了该保护系统的优越性能。
Bibliography:Sun Yukun , Zhu Zhiying , Huang Zhenyue , Tang Ping （ 1. Nanjing Institute of Technology, Nanjing 211167, China; 2. Jiangsu University, Zhenjiang, Jiangsu 212013, China）
leakage protection ; selectivity ; dsPIC30F4012 ; PIC 16F877A ; RS-485 bus ; optical fiber com-munication
11-4421/G3
A novel selective leakage protective device in master-slave structure was proposed where dsPIC30F4012 was the master controller and PIC16F877A was the slave .processor. The device used the principle of additional DC power supply in main feeding switch to examine the occurrence of the leakage and used the principle of direction of zero sequence power in branch feeding switch to judge the faulty line. The hardware diagram and the software flow chart of protective system were given and RS-485 bus and optical fiber communication technology were adopted. It could improve the action capability and anti-interference capability of the leakage power supply system in underground, and the experimental results confirmed the protection good pe
ISSN:1009-1742
2096-0034
DOI:10.3969/j.issn.1009-1742.2012.07.014