摘要
水轮机调速器比例积分微分(proportion-integration-differentiation,PID)参数优化是经久不衰的研究课题,目前研究较多的是基于最优化理论的参数设计。提出一种基于水轮机转速性能指标满意度参数优化的新方法,该方法直接计算系统响应的上升时间、超调量、调整时间、稳态误差和反调量等性能指标,籍此得到各性能指标的满意度函数,并以系统总体满意度作为适应度函数,利用遗传算法进行参数优化,得到总体满意度符合设计要求的PID参数。该方法设计目标更实际、具体,尽管参数不一定最优,但能满足系统响应要求,且代价较小,更具实用性。应用至刚性水击模型和弹性刚性水击模型水力系统的PID参数优化设计,仿真结果表明满意度控制方法在水轮机调速系统参数优化中的有效性和实用性。
Proportion-integration-differentiation (PID) parameters optimization of the hydro-turbine governor is an everlasting topic. Currently most studies focus on the parameter design based on optimal theories. A new method of parameters optimization was put forward according to the satisfactory degree of performance indices of hydro-turbine speed. Performance indices, such as rise time, overshoot, settling time and steady-state error of system response, were directly measured, so as to obtain satisfactory degree function of each index. Taking the total satisfactory degree value as fitness function to optimize parameters with genetic algorithm (GA), the PID parameters meeting design demands were obtained. The design aim of the proposed method is more practicable and workable. The parameters obtained, though not be optimal, can meet demands of system response and be more practical with lower cost. This method was applied to designing PID parameters of linear and nonlinear non-elastic water models of the hydraulic system, and simulation results proved the effectiveness and usefulness of satisfactory control in optimizing parameters of the hydro turbine governor.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2009年第20期99-105,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(50847043
90610024
50467002
50347026)
云南省科技攻关项目(2003GG10)
云南省自然科学基金项目(2005F0005Z
2004E0020M
2002E0025M)
云南省教育厅基金项目(08C0016)~~
关键词
水轮机
调速器
满意控制
比例积分微分调节器
遗传算法
hydraulic turbine
governor
satisfactory control
proportion-integration-differentiation
genetic algorithm
作者简介
刘志坚(1975-),男,博士研究生,主要从事电力系统稳定运行与控制、水力系统对电力系统的稳定影响等方面的研究工作,alzj0637@sina.com;
束洪春(1961-),男,博士,教授,博士生导师,主要研究方向为新型继电保护和故障测距、数字信号处理及DSP应用、电力系统CTI技术等;
于继来(1965-),男,博士,教授,博士生导师,主要从事电力系统模式分析、电力系统潮流控制与FACTS、电力系统优化调度与运营、电力系统稳定分析及仿真等方面的研究工作。