华电技术 ›› 2008, Vol. 30 ›› Issue (3): 33-36.

• 技术开发 • 上一篇    下一篇

基于PLC备用电源自动投入装置的实现

王宁   

  1. 燕山大学电气工程学院 河北 秦皇岛 066004
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-03-25 发布日期:2008-03-25

Realizing of the automatic switching devices for standby power supply based on PLC

WANG Ning   

  1. Institute of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-03-25 Published:2008-03-25

摘要: 备用电源自动投入装置在电力系统中应用广泛,应用可编程逻辑控制器(PLC)可实现备用电源自动投入。对内桥主接线的四种备自投情况进行了分析,因其充放电条件各不相同,故4种备自投情况可以通过软件编程集中实现,与传统的继电器组成的备用电源自动投入装置相比,该装置具有可靠性高、灵活性好、接线简单、调试方便和投资小等优点。

关键词: 电力系统, 内桥接线, 备用电源自动投入, 可编程控制器

Abstract: Automatic standby power supply switching device is applied in power system widely. The device can be realized by using PLC. The four cases of automatic standby power supply switching of internal bridge main connection were analyzed. Because of the difference between charge and discharge condition of the four cases, they can be realized by means of software programming of PLC. The device has merits of high reliability, flexible controlling, simple connection mode, convenient debugging and economical investment compared with the same conventional device constructed by using relays.

Key words: power system, internal bridge connection, automatic switching of standby power supply, programmable controller(PLC)