存在GDB和GRC的负荷频率控制系统的分析与设计  

Analysis and Design of Load Frequency Control System with GDB and GRC

作　　者：常帅兵 赵斌 齐山成 CHANG Shuai-bing;ZHAO Bin;QI Shan-cheng(School of Electrical Engineering and Automation,Henan Institute of Technology,Xinxiang 453003,China)

机构地区：[1]河南工学院电气工程与自动化学院,河南新乡453003

出　　处：《河南工学院学报》2020年第4期8-11,68,共5页Journal of Henan Institute of Technology

基　　金：河南工学院高层次人才科研启动基金(KQ1854);河南省高等学校青年骨干教师培养计划(2017GGJS170)。

摘　　要：在实际工业系统中,GDB和GRC是经常存在的,它们会影响系统的控制性能,甚至导致系统不稳定。针对存在调速器侧隙非线性和汽轮机GRC的LFC系统,采用了LADRC方法,将GDB非线性转化成传递函数形式,进而降低参数整定的难度。接着,提出了一种误差补偿策略,这个策略在保持LADRC自身特性的同时,可以很好地消除GDB非线性和汽轮机GRC的影响。仿真结果显示,提出的误差补偿策略能很好地恢复和改善系统的控制性能。In the actual industrial systems,the governor dead-band and the steam turbine generation rate constraint(GRC)are ubiquitous,the control performance of the system can be affected,and even unstable because of the nonlinearities.Therefore,a design of load frequency control(LFC)of power systems with governor dead-band nonlinearity and steam turbine GRC via linear active disturbance rejection control(LADRC)is presented.And then,a method of GDB converted into the transfer function form is also propos ed,the purpose of the method is to reduce the difficulty of parameter tuning.Further,an error compensation scheme is proposed,while maintaining the own characteristics of LADRC,the scheme can eliminate the effect of GDB nonlinearity and steam turbine GRC effectively.Simulation results show that the error compensation scheme can recover and improve the performance of the controlled system effectively,the method is feasible and effective.

关 键 词：负荷频率控制 调速器侧隙非线性 误差补偿策略 发电速率约束 线性自抗扰控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]