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The Online Simulation System Research Of Reactor Physics In Nuclear Power Plant

Posted on:2007-10-30Degree:DoctorType:Dissertation
Country:ChinaCandidate:Q ZhaoFull Text:PDF
GTID:1102360185466771Subject:Nuclear science and engineering
Abstract/Summary:PDF Full Text Request
The three-dimensional power distribution in core is one of the most important status variables of nuclear reactor in nuclear power plant (NPP). In order to monitor the 3-D incore power distribution timely and accurately, the online simulation system of core physics was designed in the paper. This system combines core physics simulation with the data, which is from the plant and reactor instrumentation.In the paper, Unit One in Qinshan Phase NPP II Project is as the study object. The design of the system consists of the hardware part and the software part. The online simulation system consists of a main simulation computer, a simulation operation station and network equipment. The online simulation system software includes of the real-time simulation support software, the system communication software, the simulation program and the simulation interface software.The work model of online simuluation system includes online track model and diagnosis forecast model. In the online track model, the 3-D incore power distribution is provided by the online simulation system,which and local unit are in synchronized operation. The diagnosis forecast model, a kind of offline work model, can calvulate and forecast the core status in future quickly, using the core status base.Using the fuel assembly burnup calculation program, TPFAP and FITLINK, Cross section of fuel assembly is calculated, in which the coolant water density, fuel burnup, coolant boron concentration, power desity and control rods are consided.Two-group and three-dimensional neutron kinetics model with six groups delayed neutrons was used in the real-time simulation of nuclear reactor core physics. According to the characteristics of the nuclear reactor, the core was divided into many nodes. Resolving the neutron equation, the separate...
Keywords/Search Tags:nuclear power plant, reactor physics, online simulation incore measurement, power distribution
PDF Full Text Request
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