AP1000汽轮机主阀门LVDT不线性问题分析和修正  

Non-Linearity Problem of LVDT Analysis and Solution in AP1000 Nuclear Power Plant

作　　者：郑健 Zheng Jian(Sanmen Nuclear Power Company,Zhejiang,Taizhou,317112,China)

机构地区：[1]三门核电有限公司,浙江台州317112

出　　处：《仪器仪表用户》2019年第1期86-89,共4页Instrumentation

摘　　要：LVDT(Linear Variable Differential Transformer)是汽轮机控制系统中反馈汽轮机调节汽门开度的测量元件,其测量反馈的准确度对整个汽轮机控制起着决定性作用。本文结合三门核电汽轮机控制系统调试过程中发现的LVDT反馈的阀位不线性问题,分析了该问题的原因。针对该问题,分别从逻辑算法、硬件电路上提出了参考的解决方案,以及三门核电最终采取的解决方案,并为后续项目的建设和维护提供参考。LVDT(Linear Variable Differential Transformer)is the valve position measure element of mail valve in turbine control system,accuracy of its feedback is important to the turbine control system.This paper analyzed the reason that Non-linearity of the LVDT in site test.And this problem may cause turbine power fluctuate.This paper introduced 3 solutions based on logic and hardware circuit,and analyzed the feasibility of these solutions.The final proposed solution could provide experience in commissioning and maintenance stage of the plant as such problems.

关 键 词：LVDT 反馈电压 不线性 修正方法 

分 类 号：TH[机械工程]