Power level control is one of the critical functions in the instrument and control system of nuclear power plants (NPPs). In most power level control systems of NPPs, the power level or average neutron flux in reactor cores provided by out-of-core neutron sensors are usually measured as feedback of power control systems, while, as critical measuring devices, there is a risk of damage to out-of-core neutron sensors. For improving the operation reliability of NPPs under the neutron sensors’ failure, a power control system based on power observer is developed in this work. The simulation based on NPP simulator shows the power control system based on the observer is effective when neutron sensors fail.

中文翻译：

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中子传感器故障下基于无状态状态观测器的核电厂功率水平控制

功率水平控制是核电厂（NPP）的仪器和控制系统中的关键功能之一。在大多数核电厂的功率水平控制系统中，通常将核外中子传感器提供的反应堆堆芯中的功率水平或平均中子通量作为功率控制系统的反馈进行测量，而作为关键测量装置，则存在以下风险：损坏核外中子传感器。为了提高中子传感器失效时核电厂的运行可靠性，本文开发了一种基于功率观测器的功率控制系统。基于NPP模拟器的仿真表明，在中子传感器失效时，基于观测器的电力控制系统是有效的。