Control optimization of turbine oil motive with valve position feedback device under fault condition

WU Yi; LIN Lei; CHEN Xuelin; YIN Shaoyong

English

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Control optimization of turbine oil motive with valve position feedback device under fault condition

Thermal Power Generation Vol. 42, Issue 12, Pages: 115-117(2013)

更新时间：2025-09-28

- Control optimization of turbine oil motive with valve position feedback device under fault condition
- 作者机构：
  
  广东惠州平海发电厂有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK267
- Published：2013
- 稿件说明：
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WU Yi, LIN Lei, CHEN Xuelin, et al. Control optimization of turbine oil motive with valve position feedback device under fault condition[J]. Thermal Power Generation, 2013, 42(12): 115-117.
DOI：

WU Yi, LIN Lei, CHEN Xuelin, et al. Control optimization of turbine oil motive with valve position feedback device under fault condition[J]. Thermal Power Generation, 2013, 42(12): 115-117. DOI：

摘要

针对伺服阀阀位反馈装置的线性可变差动变送器(LVDT)在故障状态下汽轮机阀门油动机(简称油动机)控制存在的阀门PID控制器切至手动控制方式后无法将阀位稳定在某一位置等问题

根据油动机的控制原理

结合油动机伺服阀的控制特点

对广东惠州平海发电厂有限公司超超临界2×1 000MW机组的1号机组给水泵汽轮机阀门油动机控制逻辑进行了优化。优化后

油动机控制逻辑在伺服阀阀位反馈装置LVDT故障状态下

能够快速稳定阀位变化;在故障瞬间能够将转速变化控制在300r/min以内

且转速变化经过3个波形变化后

稳定在200r/min以内。

Abstract

In case of linear variable differential transducer(LVDT)of the servo valve position feedback device

the valve position is difficult to be fixed after the PID control is switched to manual control.According to control principle of the oil motive and combining with control characteristics of the oil motive servo valve

control model of the oil motive under fault condition of the valve position feedback device LVDT was established.Moreover

this control model was applied on ultra supercritical 1 000MW unit of Guangdong Huizhou Pinghai Power Plant to optimize its original oil motive control logic.The simulation results and actual experimental results indicate that

the optimized oil motive control logic can stabilize the valve position quickly under fault condition of the servo valve position feedback equipment LVDT.It can control the rotation speed within 300r/min once the fault occurred and 200r/min after the speed experienced three waveforms.

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