基于组态与PLC的模块化低压电器试验系统

Design of Modular Low Voltage Electrical Apparatus Test System Based on Configuration and PLC

针对目前低压电器试验中测试项目在系统设计完成后难以更改的问题,提出以PLC、上位机、组态软件集成低压电器试验系统架构,实现低压电器试验的模块化试验设计。首先,设计模块化低压电器试验系统架构,由组态软件实现人机交互,按照协议,经由专家系统,将测试流程转换为PLC程序代码;然后,分别设计单回路控制、CC-Link主从站控制程序结构;最后,在低压开关设备试验中分别实现。试验结果表明:本文提出的架构实现了低压电器的模块化试验设计、精确控制试验流程、实时监控试验状态、同步触发数据采集,提高工作效率。

As the current low-voltage electrical testsaredifficult to change after the system design completed,a low-voltage electrical test system architectureintegrated with PLC, upper computer and configuration software was put forward to designmodular experiment for low voltage electrical apparatus tests. Firstly, modular low-voltage electrical test system architecture was designed,using the configuration software to achieve human-computer interaction and through the expert system, converting the test process to PLC program code. Then, a single-loop control and CC-Link master-slave control program structure were designed Finally, the control programs were realized in the low-voltage switchgear test.The results show that the proposed architecture can realize the modular test design of the low-voltage electrical apparatus test, control the test flow accurately, monitor the test status in real time, and trigger the data acquisition synchronously to improve the work efficiency.