系统仿真学报 ›› 2015, Vol. 27 ›› Issue (7): 1532-1540.

• 信息、控制、决策与仿真 • 上一篇    下一篇

高速率变负荷模式下火电机组协调控制系统参数优化

田亮1, 刘芳2, 刘鑫屏1, 刘吉臻1   

  1. 1.华北电力大学 新能源电力系统国家重点实验室,北京 102206;
    2.鄂尔多斯电业局修试管理处,鄂尔多斯 017010
  • 收稿日期:2014-07-17 修回日期:2014-12-18 出版日期:2015-07-08 发布日期:2020-07-31
  • 作者简介:田亮(1976-),男,内蒙人,博士,副教授,研究方向为火电机组建模及控制系统优化;刘芳(1990-),女,山西人,硕士生,研究方向为大机组智能优化控制;刘鑫屏(1975-),女,河北人,博士,副教授,研究方向为大机组智能优化控制。
  • 基金资助:
    国家重点基础研究发展计划资助项目(973项目)(2012CB215203)

Parameter Optimization on Coordinated Control System of Thermal Power Units in High Rate Variable Load Operation Mode

Tian Liang1, Liu Fang2, Liu Xinping1, Liu Jizhen1   

  1. 1. North China Electric Power University, Changping District, State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, Beijing 102206, China,
    2. Repair and Test Department of Ordos Electric Power Bureau, Ordos 017010, China
  • Received:2014-07-17 Revised:2014-12-18 Online:2015-07-08 Published:2020-07-31

摘要: 针对电网发电负荷指令快速频繁变化导致火电机组发电负荷及蒸汽压力控制品质变差的问题,提出一种参数调整幅度可量化的试凑法。基于被控制对象模型保守设置控制器参数初值,依据负荷变化速率目标值与当前值之差确定优化次数,研究了协调控制系统PID控制器参数的优化方法,并从理论上证明了方法的有效性。在一600 MW机组上实施优化,通过扰动实验证明机组发电负荷及蒸汽压力控制品质获得明显改善。

关键词: 火电机组, 协调控制, 参数优化, 试凑法, 数学分析

Abstract: The frequent fluctuations and rapid change of power grid generating load instruction cause the deterioration of control quality of generating load and throttle pressure in thermal power units. To solve this problem, a trial and error method, the parameters adjustment range of which could be quantified, was proposed. Based on the model of controlled object, the initial value of controller parameters were set conservatively. By calculating the difference between current value and the target value of load change rate, the optimization times were determined, the PID controller parameters optimization method of coordinated control system was studied, and the effectiveness of this method has been proved in theory. The application in a 600MW unit shows that the control quality of generating load and throttle pressure were improved obviously.

Key words: thermal power unit, coordinated control, parameter optimization, trial-and-error method, mathematical analysis

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