摘要
根据我国核安全法规要求,压水堆核电机组一回路边界在水压试验期间承受的最大压力约为功率运行工况下的1.33倍。为控制压水堆核电机组一回路水压试验过程中的系统超压风险,必须由超压保护装置提供相应的保护功能,以确保试验期间压力可控。传统方案多采用外置的控制系统来实现,在实际应用中存在增加仪控设备接口、维护工作量大等缺点。随着数字化技术在核电领域的广泛应用,传统方案已不适用于新建核电机组。为此,提出了一套基于核电机组数字化仪控系统平台的一回路超压保护系统。该系统有效结合了数字化仪控平台的特点,具有人机界面丰富、可实现多重冗余保护等优点。该系统已在某核电机组首次大修中得到了应用,应用结果表明,该系统避免了传统方案的缺点,可操作性强且可靠性高,具有很高的推广价值。
In accordance with the nuclear safety regulations of our country, during hydrostatic test, the maximum bearable pressure of the primary loop of the pressurized water reactor（PWR） unit shall be about 1. 33 times of that of under normal operation. In order to control the overpressure risk of the system in hydrostatic test, relevant protection function shall be provided by certain overpressure protection device to guarantee the pressure in test period controllable. In traditional scheme, mostly the external control system is used, while I＆C interfaces have to be added to bring more maintenance efforts. With the development of the digitized technology and applied in nuclear power field, traditional scheme is no longer suitable for new built units, thus the primary loop overpressure protection system based on a platform of digital I＆C technology is proposed. The system integrates the characteristics of digital I＆C platform, and has the advantages of rich man - machine interface and multiple redundant protection. The system has been applied in the first overhaul of a certain nuclear power plant. Practice shows that the system avoids the shortcomings of the traditional scheme,features high operability, reliability, and high promotional value.
作者
胡文正
张益林
郭伟
HU Wenzheng ZHANG Yilin GU(China Nuclear Power Technology Research Institute Co. ,Ltd. , Shenzhen 518116,China)
出处
《自动化仪表》
CAS
2017年第6期96-99,共4页
Process Automation Instrumentation
关键词
新能源
核电站
压水堆
CPR1000
数字化仪控平台
水压试验
超压保护
New energy
Nuclear power plant
Pressurized water reactor
CPR1000
Digital I＆C platform
Hydrostatic test
Overpressure protection
