th.2023.05.006]
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基于小型PLC的多模式火电DCS控制模块设计

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

Title:: Design of multimode thermal power DCS control module based on small PLC

Author(s):: WANG Jin; WANG Xiao; WANG Jing; Shenmu Vocational and Technical College, Shaanxi Shenmu 719300, China

Keywords:: small PLC; thermal power unit; DCS control module; predictive control algorithm; nonlinear model

摘要:: 火电DCS控制模块可以对火电厂各项参数进行实时监测，实现对发电过程的控制，但其组态特性和传统PLC面临的接线逻辑都较为复杂，大大增加了控制的复杂性。对此，提出基于小型PLC的多模式火电DCS控制模块设计。通过分析其能量平衡特性构建了火电单元机组动态约束模型，基于动态约束模型设计基于小型PLC的火电DCS控制模块；根据设计的DCS控制模块，利用阶跃响应模型分析火电机组运行状态，根据运行状态结果实现火电机组的控制。经实验表明：小型PLC下的DCS控制模型对指令响应时间短，且整体抗干扰能力较强。

Abstract:: The DCS control module of thermal power plants can monitor various parameters in real time and control the power generation process. However, its configuration characteristics and the wiring logic faced by traditional PLCs are relatively complex, greatly increasing the complexity of control. In response, a multi-mode thermal power DCS control module design based on a small PLC is proposed. A dynamic constraint model for thermal power unit units was constructed by analyzing their energy balance characteristics, and a small PLC based thermal power DCS control module was designed based on the dynamic constraint model. According to the designed DCS control module, the Step response model is used to analyze the operation status of the thermal power unit, and the control of the thermal power unit is realized according to the operation status results. Experiments have shown that the DCS control model under a small PLC has a short response time to instructions and strong overall anti-interference ability.

[1]邱若菡,席涵,吴啸.带吸收剂存储的火电机组碳捕集系统预测控制[J].动力工程学报,2022,42(11):1123-1130.

[2]郑亮,曹越,司风琪.一种火电机组智能软件设计及开发[J].工业控制计算机,2021,34(12):49-50+53.

[3]王国涛,杜鸣,张庭,等.火电机组湿态运行下的协调系统模型和控制策略研究[J].热能动力工程,2022,37(08):25-32.

[4]朱颖,黄嘉诚,陈祎婷,等.相速度近似匹配情况下的Lamb波非线性特征研究[J].仪器仪表学报,2022,43(04):263-270.

[5]张思松,张明.基于模糊聚类算法的高维大数据增量处理方法[J].蚌埠学院学报,2022,11(02):55-59.

[6]曾卫东,任国俊,卢海松,等.火电厂分散控制系统域间通信分析研究[J].热力发电,2021,50(12):1-5.

[7]曹鹏飞,禹静,尹健龙,等.多微通道式气体静压节流器阶跃响应特性的测试研究[J].中国测试,2021,47(02):156-163.

[8]周雪松,李康,马幼捷.DC-DC变换器滑模变结构控制研究[J].电力系统及其自动化学报,2021,33(03):11-17.

[9]王永智,景云,王丹.基于在线参数辨识的PWM整流器功率预测控制[J].控制工程,2022,29(05):796-803.

备注/Memo:: 收稿日期：2023-06-16
基金项目：陕西省职业技术教育学会2022年项目,提升我校机电一体化专业技能大赛参赛水平的实践研究——以“现代电气控制安装与调试”赛项为例（编号:2022SZX131）
第一作者：
王进（1983—），男（汉族），陕西神木人，工学硕士，副教授，研究方向为从事电气自动控制、网络通信等研究。

更新日期/Last Update: 1900-01-01