主给水流量测量精度及核电站功率提升研究  

Research on Accuracy for Main Feedwater Flow Measurement and Power Upgrade for Nuclear Power Plant

作　　者：郭林 魏华彤 黄树亮 尚雪莲 GUO Lin;WEI Huatong;HUANG Shuliang;SHANG Xuelian(China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China)

机构地区：[1]中国核电工程有限公司,北京100840

出　　处：《自动化仪表》2021年第2期28-32,共5页Process Automation Instrumentation

摘　　要：许多国家或地区的核电站都已进行过不同幅度的功率提升研究和实践。功率提升改造能为核电站取得了显著的经济效益。同时,也有新建的核电站在建设之初把小幅功率提升融合到设计中,比如三门AP1000核电。这能够避免后期改造的各种现场条件制约。以华龙一号核电堆型为例,对华龙一号主给水流量测量精度提升与反应堆功率小幅提升理论关系与可行性方法进行了研究和分析,详细阐述了功率提升基础、华龙一号主给水流量不确定度与对应堆芯热平衡不确定度计算关系、华龙一号实施原则。所得结论为核电厂改造、功率提升的进一步研究和实施提供了参考。Research and practice of power upgrade for nuclear power plants in many countries or regions have been conducted in varying degrees.The reforms of power upgrade have been achieving significant economic benefits for nuclear power plants.At the same time,modest power upgrade is incorporated in the design phase of newly built nuclear power plants at the beginning of construction to avoid hinder adjustment in various field conditions.The Sanmen AP1000 nuclear power plant is a case in point.Taking HPR1000 nuclear power plant as an example,the theoretical relationship and feasibility method of HPR1000 main feedwater flow rate measurement accuracy improvement and reactor power small upgrade are studied.The calculation correspondences between the measurement uncertainty of HPR1000 main feedwater flow rate and the measurement uncertainty of core thermal balance are analyzed.The basis of power increase and the implementation principle of HPR1000 are elaborated in detail.The references for further research and implementation of nuclear power plant renovation and power upgrade are provided.

关 键 词：超声波流量计 小幅功率提升 不确定度 核电站 华龙一号 堆芯功率 安全裕量 热平衡 

分 类 号：TH814[机械工程—仪器科学与技术]