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首页> 外文期刊>Annals of nuclear energy >Pressurizer dynamic model and emulated programmable logic controllers for nuclear power plants cybersecurity investigations
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Pressurizer dynamic model and emulated programmable logic controllers for nuclear power plants cybersecurity investigations

机译:用于核电站网络安全调查的加压器动态模型和模拟可编程逻辑控制器

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This work demonstrates the functionality of the pressurizer using a fast-running three regions, non-equilibrium model and control programs of emulated PLCs. The state variables from an integrated model of primary loop in a representative PWR plant are communicated to the pressurizer's emulated PLCs using a synchronized data transfer function. In turn, the PLCs communicate back instructions to the pressurizer model to adjust the pressure and water level to remain within preprogramed setpoints. Pressurizer model simultaneously solves the coupled mass and energy conservation equations in the saturated vapor and saturated and subcooled liquid regions using fixed step solver. Results demonstrate the response of the pressurizer model linked to an emulated pressure and water level PLCs in a simulated transient involving surge-in and surge-out events. The 50 ms response delay time for the emulated PLCs insignificantly affects operation and predictions of the pressurizer model. (C) 2021 Elsevier Ltd. All rights reserved.
机译:这项工作使用快速运行的三个区域,非平衡模型和模拟PLC控制程序来演示加压器的功能。来自代表PWR工厂中的主循环集成模型的状态变量使用同步数据传输函数传送到加压器的模拟PLC。反过来,PLC将背部指令通信给加压模型,以调整压力和水位以保留在预编程的设定值内。加压器模型使用固定步骤求解器同时解决饱和蒸气和饱和和饱和液体区域中的耦合质量和节能方程。结果表明,在涉及浪涌和浪涌事件的模拟瞬态中,加压模型与仿真压力和水位PLC相关的响应。模拟PLC的50ms响应延迟时间不关紧地影响加压模型的操作和预测。 (c)2021 elestvier有限公司保留所有权利。

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