基于物联网技术的低产井间歇抽油自寻优控制系统设计

Design of self-optimizing control system for intermittent pumping of low-production wells based on Internet of Things technology

摘要:

针对当前低产井间歇抽油自寻优控制系统频率差保护能力较差，导致无功补偿误差较大，控制时间较长的问题，设计了基于物联网技术的低产井间歇抽油自寻优控制系统。根据气体分离路径，构建控制硬件元件操作路径，采用DCZL23-WFET600S-I型采集器采集内部信息，利用RS-485的串口连接方式，构建信息串口连接模式，利用数据控制器标准化处理控制数据，完成控制系统硬件设计。匹配控制准则与控制平台程序，查询匹配最佳数值信息，完成平台初始化处理，设计软件控制背板，连接控制前端和控制信道，构建数据传输联络通道，采用光电转换隔离技术，交换原油数据传感信息，调整算法的录入模式，连接系统软件平台中心控制网络，执行网络连接指令，实现控制系统软件操作。实验结果表明，本文研究系统的频率差保护整体值为7.0Hz，动作值为50.05Hz，控制时间仅为7.6s，频率差保护能力较好，能够有效减小无功补偿误差，缩短控制时间。

Abstract:

Aiming at the problem that the frequency difference protection ability of the current intermittent pumping self optimization control system for low production wells is poor, which leads to large reactive power compensation error and long control time, a low production well intermittent pumping self optimization control system based on Internet of things technology is designed. According to the gas separation path, the control hardware component operation path is constructed. The dczl23-wfet600s-i collector is used to collect the internal information. The serial port connection mode of RS-485 is used to construct the information serial port connection mode. The data controller is used to standardize the control data to complete the control system hardware design. Match the control criteria and control platform program, query the best matching value information, complete the platform initialization processing, design the software control backplane, connect the control front end and control channel, construct the data transmission contact channel, use the photoelectric conversion isolation technology, exchange the sensing information of crude oil data, adjust the algorithm input mode, connect the central control network of the system software platform, and execute network connection command, control system software operation. The experimental results show that the overall value of the frequency difference protection is 7.0hz, the action value is 50.05hz, and the control time is only 7.6s. The frequency difference protection ability is good, which can effectively reduce the reactive power compensation error and shorten the control time.