核电站仪控系统数字化开发仿真测试技术研究

在核电站应用数字化仪表与控制 (I&C)取代模拟 I&C 系统,已成为必然的发展趋势。本文分析了核电站全范围模拟机的蒸汽发生器数学模型,研制开发独立的核电站蒸汽发生器实时仿真系统,并与控制系统形成能够相互作用的闭环系统,用于数字化仪控系统改造提供仿真对象及进一步控制方案研究。在仿真过程中,除了仿真模型之外,其他的硬件和软件由真实的控制系统构成。不但为核电站仪表与控制 (I&C)系统数字化开发提供理论分析,也为今后现场调试工作创造有利条件。

Research on real-time simulation test for upgrades of digital I&C system in nuclear power plant

The developing trend that digital instrument and control( I&C ) system will supplant traditional analog I&C system in nuclear power plant is emphasized. This paper introduces mathematical model of steam generator of full scope simulator for nuclear power plant. The independent real-time simulation system, which forms the interac- tive closed loop together with the steam generator control system, can be applied to provide a simulation target for upgrades of instrument & control system and the research of control schemes. At the same time, a simulation method for this purpose is presented in this paper. In this method all of the hardware and software are composed of real dis- tributed control system except the model of controlled object. This will not only create favorable conditions for com- missioning on site in the future, but also give a theoretical analysis for upgrades of digital I&C system in nuclear power plant.