Abstract: A method and a system for evaluating and simulating a nuclear power plant based on a model are provided, which includes a plant top-level demand module, a function realization module, a logical architecture construction module, an evaluation and simulation configuration module, a function evaluation module, an overall performance evaluation module, a data information communication module and a model base module.

Abstract: A method and a system for evaluating and simulating a nuclear power plant based on a model are provided, which includes a plant top-level demand module, a function realization module, a logical architecture construction module, an evaluation and simulation configuration module, a function evaluation module, an overall performance evaluation module, a data information communication module and a model base module.

Abstract: A dynamic characteristic analysis method of DET and RELAP5 coupling based on a universal instrumental variable method includes steps of: constructing a DET simulation model of a discrete dynamic event tree and modifying TRIP cards of an input file by adding universal instrumental TRIP variables according to state transition types of DET simulation objects, the universal instrumental TRIP variable being variable type or logical type; setting a simulation time of the RELAP5, controlling a simulation step, and analyzing an output result file of each simulation step of the RELAP5; backtracking the RELAP5 according to state transition types of DET simulation objects. The dynamic characteristic analysis method has advantages of simplifying TRIP setting process and method of DET state transition objects in an input file of the RELAP5 required for the coupling of DET and RELAP5, reducing a modeling complexity and improving a modeling efficiency.

Abstract: Disclosed is a reactor operation optimization method based on an improved multi-population genetic algorithm. The reactor operation optimization method includes the following steps: defining an operating condition, and designing an operating scheme according to the operating condition; obtaining operating data of the reactor system of the operating scheme through numerical simulation research, and obtaining operation indexes by calculating the operating data; optimizing the operation indexes based on an improved multi-population genetic algorithm to obtain an optimization result; obtaining an optimal operating parameter setting under the operating condition according to the optimization result. The application solves the problem that the design scheme of reactor operation control hardly meets actual operation requirements, and therefore improves operation characteristics of the reactor system.

Abstract: An ERVC for floating nuclear power plants includes a containment, a reactor vessel, a liquid gallium collection tank, a heat pipe, a cooling cabin and a gallium storage tank. The containment is arranged in a sea environment, and the containment is provided with a containing cavity; the reactor vessel and the liquid gallium collection tank are arranged up and down and located in the containing cavity. An end of the heat pipe is inserted into the liquid gallium collection tank, and another end thereof is arranged outside the liquid gallium collection tank; the gallium storage tank is located in the containing cavity; the gallium storage tank is connected to the liquid gallium collection tank through a liquid gallium release valve; and the cooling cabin is located under the containment and under a sea level of the sea environment.

Abstract: A dynamic characteristic analysis method of DET and RELAP5 coupling based on a universal instrumental variable method includes steps of: constructing a DET simulation model of a discrete dynamic event tree and modifying TRIP cards of an input file by adding universal instrumental TRIP variables according to state transition types of DET simulation objects, the universal instrumental TRIP variable being variable type or logical type; setting a simulation time of the RELAP5, controlling a simulation step, and analyzing an output result file of each simulation step of the RELAP5; backtracking the RELAP5 according to state transition types of DET simulation objects. The dynamic characteristic analysis method has advantages of simplifying TRIP setting process and method of DET state transition objects in an input file of the RELAP5 required for the coupling of DET and RELAP5, reducing a modeling complexity and improving a modeling efficiency.