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高速率变负荷模式下火电机组协调控制系统参数优化 被引量:14

Parameter Optimization on Coordinated Control System of Thermal Power Units in High Rate Variable Load Operation Mode
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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。 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 600 MW unit shows that the control quality of generating load and throttle pressure were improved obviously.
出处 《系统仿真学报》 CAS CSCD 北大核心 2015年第7期1532-1540,共9页 Journal of System Simulation
基金 国家重点基础研究发展计划资助项目(973项目)(2012CB215203)
关键词 火电机组 协调控制 参数优化 试凑法 数学分析 thermal power unit coordinated control parameter optimization trial-and-error method mathematical analysis
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参考文献1

  • 1田亮.单元机组非线性动态模型的研究[D].华北电力大学(河北)2005

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