| 引用本文: | 侯树文,段爱霞,黄伟锋,黄永志.火电厂主汽温PID控制器参数带宽分析及应用[J].电力自动化设备,2005,(5):77-81 |
| .Bandwidth analysis of main-steam temperature PID controller parameters in fossil-fired power station[J].Electric Power Automation Equipment,2005,(5):77-81 |
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| 摘要: |
| PID控制器广泛应用于火电厂主汽温控制。PID参数变化影响串级主汽温控制系统频率特性。分别分析了比例、积分、微分参数增大时的系统阶跃响应图和波德图，总结了各参数变化对系统响应速度、超调量、稳定性的影响，对高、中、低三种频段幅值和相位的影响，以及模值稳定裕度、相位稳定裕度、穿越频率、剪切频率的变化趋势。采用频率带宽分析方法，综合各参数变化对波德图的影响，设计出一组合适的PID控制参数，改善了主汽温调节品质。 |
| 关键词: 火电厂主汽温 PID控制器 频率特性 带宽分析 |
| DOI： |
| 分类号:TP214 TM621.4 |
| 基金项目: |
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| Bandwidth analysis of main-steam temperature PID controller parameters in fossil-fired power station |
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HOU Shu-wen DUAN Ai-xia HUANG Wei-feng HUANG Yong-zhi
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| Abstract: |
| The PID controller is widely used in the main steam temperature control in the fossil-fired power station, and its parameter variations affect the frequency characteristics of the cascade control system. For the increases of proportional, integral and derivative coefficients, the system step response diagrams and bode diagrams are analyzed respectively. Its influences on response speed, overshoot, stability, amplitudes and phases of three frequency bands are studied, and the change tendencies of amplitude steady margin,phase steady margin,through frequency and shearing frequency are summarized. Based on which, a set of PID parameters is designed by using frequency bandwidth analysis to improve the performance of main steam temperature controller. |
| Key words: main-steam temperature,PID controller,frequency characteristics,bandwidth analysis |
