Zuoyun Hanjiawa Coal Industry Co., Ltd., Shanxi Coal Import and Export Group

为适应当前煤矿提升装置控制系统自动化及高性能运行需求,针对传统矿用提升装置控制方式调速不平滑、钢丝绳张力波动大、能源浪费严重等问题,对变频调速及控制技术进行研究,通过模糊PID调速及张力闭环控制理论提出了一种基于PLC控制的提升装置变频调速自动控制系统设计方案。系统对提升装置变频调速及钢丝绳张力控制模型及策略进行分析建立,通过双PLC冗余控制结构实现提升装置速度自适应调节控制及钢丝绳张力恒定控制,同时系统具备提升装置运行实时监控及综合保护功能,有效提升提升装置运行效率及安全可靠性。经实验测试,系统调速精度较高、速度响应较快,钢丝绳张力在负载变化情况下稳定度较高,达到预期设计目标,在煤矿安全、高效生产方面具有显著经济及社会效益。

In order to meet the automation and high-performance operation requirements of current coal mine lifting device control systems, and to address the problems of uneven speed regulation, large fluctuations in wire rope tension, and serious energy waste in traditional mining lifting device control methods, research has been conducted on frequency conversion speed regulation and control technology. A design scheme for a frequency conversion speed regulation automatic control system for lifting devices based on PLC control has been proposed through fuzzy PID speed regulation and tension closed-loop control theory. The system analyzes and establishes models and strategies for variable frequency speed regulation and steel wire rope tension control of the lifting device. Through a dual PLC redundant control structure, the system achieves adaptive speed regulation control and constant steel wire rope tension control of the lifting device. At the same time, the system has real-time monitoring and comprehensive protection functions for the operation of the lifting device, effectively improving its operational efficiency and safety reliability. Through experimental testing, the system has high speed regulation accuracy, fast speed response, and high stability of wire rope tension under load changes, achieving the expected design goals. It has significant economic and social benefits in coal mine safety and efficient production.