基于前馈-反馈控制的天然气分输站场控制及前馈控制率自适应方法  

Feedforward-backward Control based Natural Gas Distribution Site Control and Feedforward Control Law Updating Method

作　　者：王树祺 姜念琛 闫峰[1] 赵晓鹰[2] 王健[3] 张舒[3] 高小永 殷卫兵 Wang Shuqi;Jiang Nianchen;Yan Feng;Zhao Xiaoying;Wang Jian;Zhang Shu;Gao Xiaoyong;Yin Weibing(Beijing Oil and Gas Pipeline Control Center,PetroChina,Beijing 100007,China;China Petroleum Pipeline Engineering Corporation,Langfang 065000,China;Pipeline Technology and Service Center,PetroChina Pipeline Branch Company,Langfang 065000,China;College of Automation,China University of Petroleum,Beijing 102249,China;Beijing Anwenyou Automation Technology Company,Beijing 102249,China)

机构地区：[1]中国石油天然气股份有限公司北京油气调控中心,北京100007 [2]中国石油天然气管道工程有限公司,河北廊坊065000 [3]中国石油天然气股份有限公司管道分公司技术服务中心,河北廊坊065000 [4]中国石油大学(北京)自动化系,北京102249 [5]北京安稳优自动化技术有限公司,北京102249

出　　处：《计算机测量与控制》2020年第6期66-69,75,共5页Computer Measurement &Control

摘　　要：天然气分输站场控制系统直接影响天然气配输质量及系统的安全可靠运行,站控系统调节阀控制是关键;目前我国天然气分输站场调节阀采用的国内厂家配置的PLC控制系统大多采用三选一式的PID控制策略,在峰谷分输、大范围调节以及上游流量压力存在较大波动的情况下普遍存在控制稳定性欠佳、调节周期长的弊端;为了改进控制效果,在深入分析造成控制效果欠佳原因的基础上,提出了基于前馈-反馈控制的控制策略,并基于此前馈-反馈控制策略提出了前馈控制率自适应调整方法以适应实际过程中调节阀动态特性变化额情况;基于Stoner Pipeline Simulator软件的仿真对象进行了初步验证,仿真结果表明施加了前馈控制作用后控制稳定性和调节时间有显著优化,调节时间缩短为原来的50%以上,该方法具备在现场推广应用的前景。Due the control system for the natural gas distribution site has a direct impact on the system safety and normal operation,the valve control method is of vital importance.For now,the common control strategy widely used in current field sites is the PID based control strategy using PLC controllers.For this control strategy,the low control precision and long tuning period is the major drawback,especially in the case of peak time and large disturbance in upstream and downstream flowrate and pressure.To improve the control effect,the root cause of the poor control performance is analyzed and a feedforward and backward based control strategy is proposed.Moreover,to improve the robustness of the control strategy,an updating strategy for the feedforward control law is proposed to disperse the influence by the dynamic variation in control valve.Finally,a case study and simulation comparison is given based on the Stoner Pipeline Simulator platform.The simulation result shows that the proposed control strategy outperforms the traditional strategy in both control stability and stabilizing time.The stabilization time is shorten to the half of the previous one.The proposed control strategy has a promising field application future.

关 键 词：天然气分输站 前馈-反馈控制 快速稳定 SPS 

分 类 号：TQ015.9[化学工程] TP391.9[自动化与计算机技术—计算机应用技术]