A small modular reactor (SMR) offers a promising means to produce carbon-free power. Many SMR designs are intended for multiple module operation, whereby several units are operated as a single plant. As such, the output from the plant can be increased or decreased via regulating the individual units. In order to benefit from such operational flexibility, individual units must be properly controlled, as there are direct and indirect couplings among their dynamics. This research examines such a situation and analyzes the dynamic behavior of a group of pressurized water reactor-type SMRs in an islanded power system under the load-frequency control framework. The detailed models of the SMRs and the associated components and subsystems are developed, and effective control systems are designed to investigate the performance of this multimodule topology in supplying uninterrupted power to the loads under different operating scenarios. The performance of the system is evaluated through simulations in PSCAD/EMTDC using a benchmark 9-bus power system.

中文翻译：

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多模块小型模块化反应器配置的负载频率控制：建模和动态分析


小型模块化反应堆（SMR）提供了一种有前景的无碳发电方法。许多 SMR 设计旨在用于多模块运行，即多个单元作为单个设备运行。因此，可以通过调节各个单元来增加或减少工厂的产量。为了受益于这种操作灵活性，必须对各个单元进行适当的控制，因为它们的动态之间存在直接和间接的耦合。本研究研究了这种情况，并分析了负载频率控制框架下孤岛电力系统中一组压水堆型 SMR 的动态行为。开发了 SMR 以及相关组件和子系统的详细模型，并设计了有效的控制系统，以研究这种多模块拓扑在不同操作场景下向负载提供不间断电源的性能。系统性能通过使用基准 9 总线电源系统在 PSCAD/EMTDC 中进行仿真来评估。