CAJ | 학술논문

为了改善轴流转桨水轮机调速器的控制性能，在考虑调速系统非线性因素的基础上，提出了一种多指标非线性控制策略。通过分析轴流转桨水轮机机械特性，给出了水轮机调速系统各环节数学模型，在此基础上建立了轴流转桨水轮机调速系统的非线性模型。并基于多指标非线性控制理论，针对轴流转桨水轮机的刚性水锤效应，设计了非线性控制器。仿真结果表明，文中所建立的调速系统模型，能有效反映轴流转桨水轮机非线性特征；所提出的控制策略与工程实际中应用的 PID 策略相比，能更好地改善系统的稳定性和运行特性，控制目标品质更为优秀，使得系统具有很高的可靠性和抗干扰能力。
위료개선축류전장수륜궤조속기적공제성능，재고필조속계통비선성인소적기출상，제출료일충다지표비선성공제책략。통과분석축류전장수륜궤궤계특성，급출료수륜궤조속계통각배절수학모형，재차기출상건립료축류전장수륜궤조속계통적비선성모형。병기우다지표비선성공제이론，침대축류전장수륜궤적강성수추효응，설계료비선성공제기。방진결과표명，문중소건립적조속계통모형，능유효반영축류전장수륜궤비선성특정；소제출적공제책략여공정실제중응용적 PID 책략상비，능경호지개선계통적은정성화운행특성，공제목표품질경위우수，사득계통구유흔고적가고성화항간우능력。
To improve control performance of Kaplan turbine governor, on the basis of considering nonlinear factors in speed governing system a multi-index nonlinear control strategy is proposed. By means of analyzing mechanical characteristics of Kaplan turbine, mathematical models of all parts of hydraulic turbine governing system are given, and on this basis a nonlinear model of speed governing system for Kaplan turbine is established. Based on the theory of multi-index nonlinear control, in allusion to rigid water hammer effect a nonlinear controller is designed. Simulation results show that the established speed governing system can reflect nonlinear characteristics of Kaplan turbine effectively;comparing with PID control strategy applied in actual engineering, the proposed control strategy can improve the stability and operation performance of the control system effectively, and the character of control objective is outstanding, thus the control system possesses high reliability and anti-jamming capability.