基于PID自整定的调门流量曲线失配非线性补偿  

Nonlinear Compensation Method for Mismatch of Flow Curve of Steam Turbine Governor Valve Based on PID Parameters Self-Tuning

作　　者：有志伟 徐芹丽 胡立生[1] 夏心磊 YOU Zhiwei;XU Qinli;HU Lisheng;XIA Xinlei(School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Electric Power Generation Equipment Co.,Ltd.Turbine Plant,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240 [2]上海电气电站设备有限公司汽轮机厂,上海200240

出　　处：《热力透平》2020年第3期234-238,共5页Thermal Turbine

摘　　要：汽轮机调门流量曲线会不可避免地出现与实际调门流量特性曲线失配的现象,流量曲线失配主要表现为控制回路出现非线性,影响机组的负荷控制甚至安全稳定运行。从汽轮机控制原理出发,研究汽轮机控制器自校正方案,在原有PID控制器结构的基础上,利用增益规划设计非线性控制器,采用基于对象模型的PID参数自整定方法达到对流量曲线失配非线性进行补偿的目的,仿真结果验证了该方法的可行性。The flow curve of steam turbine governor valve will be inevitably mismatched with the actual flow characteristic curve,if the flow curve mismatches,the control loop will be nonlinear to affect the load control or even safe and stable operation of the unit.Based on the principle of steam turbine control,the self-correction scheme of steam turbine controller is studied,and on the basis of the original PID controller structure,the nonlinear controller is designed by Gain-Scheduled,and the nonlinear compensation of flow curve mismatch is achieved by using the PID parameter self-tuning method according to the object model,the simulation results verify the feasibility of this method.

关 键 词：汽轮机 调门流量曲线失配 非线性补偿 增益规划 PID参数自整定 

分 类 号：TK264.2[动力工程及工程热物理—动力机械及工程]