Reactor core neutron flux space-time evolution prediction method and device, medium and equipment

[0040] like figure 1 shown, figure 1 It is a flow chart of the method for predicting the spatiotemporal evolution of core neutron flux according to the present invention, including the following steps:

[0041] S1. Collect the calculated values ​​of neutron flux in different core states Φ(r, t n ), where r represents the spatial position, n=1,2,...,N, where N is the number of different core states; the core states refer to the average burnup, boron concentration, power level, control rod position of the core, corresponding to different time t n;

[0042] S2. Calculate the value Φ(r, t for the N neutron fluxes collected in step S1 n ) is composed of a matrix Orthogonal decomposition is carried out, R is the number of neutron flux space positions, and the orthogonal basis is obtained to obtain the expanded basis function n=1,2,...,N; expand the basis function Prepare and store in advance;

[0043] S3. Collect the measured value s (r) of the detector at the current moment

[0063] In order to realize the method for predicting the spatiotemporal evolution of core neutron flux in Embodiment 1, the present embodiment provides a device for predicting the spatiotemporal evolution of core neutron flux, including:

[0064] The data collection module collects the calculated values ​​of neutron flux in different core states Φ(r,t n ), n=1,2,...,N, where N is the number of different core states;

[0065] Expand the base preparation module and calculate the value Φ(r,t for N neutron fluxes n ) to perform orthogonal decomposition to obtain the orthonormal basis to obtain the expanded basis function n=1,2,...,N;

[0066] The real-time data acquisition module collects the measured value s(r) of the detector at the current moment of the core d ,t i ), d=1,2,...,D, D is the number of detectors, t i is the current moment when the core is in actual operation;

[0067] The processing module, according to the current moment of the core detector measurement value

[0070] This embodiment provides a storage medium, wherein the storage medium stores a computer program, and when executed by a processor, the computer program causes the processor to perform the prediction of the spatiotemporal evolution of the core neutron flux described in the first embodiment method.