Method and system for monitoring reactor core power
A technology for core power and core power distribution, which is applied in the field of reactor core power monitoring methods and systems, and can solve the problems that the monitoring results cannot be proved, the monitoring accuracy cannot be guaranteed, and the expansion order cannot be infinite.
Active Publication Date: 2015-08-19
STATE POWER INVESTMENT CORP RES INST
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Problems solved by technology
However, once the simulation calculation has a large deviation, it cannot prove that the monitoring results of this method are credible
In the harmonic expansion method, due to the theoretical completeness of the harmonics, it is suitable for expanding the power distribution of the core, so that the monitoring accuracy can be guaranteed as a whole. However, limited by the limited available information, the expansion order cannot be infinite. Therefore, local monitoring accuracy cannot be guaranteed
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[0039]Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order to avoid obscuring the present invention.
[0040] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the ph...
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The invention discloses a method and a system for monitoring the power of a reactor core. The method comprises the following steps: acquiring current state information of a reactor in the operation process; establishing a three-dimensional diffusion calculation model of the reactor core based on the acquired current state information of the reactor and calculating harmonic waves of a three-dimensional neutron diffusion equation of the steady-state reactor core; and fitting power distribution of the reactor core according to the calculated harmonic waves and readings of a neutron detector in the reactor core. With the adoption of the scheme, the precision of monitoring on the power of the reactor can be guaranteed on the whole and locally.
Description
technical field [0001] The present application relates to the field of reactor monitoring, in particular to a reactor core power monitoring method and system. Background technique [0002] In the 1980s, reactor core power monitoring technology has received international attention. Up to now, major nuclear power developers have developed several sets of online reactor monitoring systems, such as BEACON developed by Westinghouse in the United States and Areva in France. MAGLAN, GARDEL of Studisvik in the United States, POWERPLEX of Siemens, SCORPIPO of Russia, etc. [0003] Most of the currently developed on-line monitoring systems for major reactors use the flux map surveying and mapping methods of various companies. For example, the surveying and mapping of Westinghouse's flux map adopts the spline function fitting method, while BEACON uses the spline function fitting method; the flux map surveying and mapping of Areva Company adopts the detector calibration method, and MAG...
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IPC IPC(8): G21C17/00G21C17/10
CPCY02E30/30
Inventor 王常辉陈义学余慧刘占权王苏胡也
Owner STATE POWER INVESTMENT CORP RES INST