标题：Application of Load Optimization Control of Thermal Power Unit Based on the Characteristics of Regulating Valve (Open Access)
作者：Li, Jun ;Li, WeiWei
作者机构：[Li, Jun ] State Grid Shandong Electric Power Research Institute, Jinan, China;[Li, WeiWei ] Network Center, Shandong University of Arts, Jinan, China
会议名称：2019 2nd International Conference on Advanced Algorithms and Control Engineering, ICAACE 2019
会议日期：April 26, 2019 - April 28, 2019
来源：Journal of Physics: Conference Series
摘要：In the long-term operation of thermal power units, the nonlinear and more complex viscous faults often occur in the regulator valve, which have obvious adverse effects on the dynamic performance of the load control. By using two point line models and Presiach models that are switched to each other to describe the switch asymmetry of the regulating valve and the different viscosity characteristics, the viscous fault of the regulating valve is effectively diagnosed, and the statistical consistency of the estimated values of model parameters are proved. Several key control technologies of thermal unit are given, and the control method of compensating the viscous fault of the regulating valve is presented, which weakens the adverse effect of the non-linear characteristics of the control valve on the dynamic control performance, and makes the main variables such as main steam pressure of unit achieve good dynamic performance.
© 2019 Published under licence by IOP Publishing Ltd.