Nuclear power plant water intake marine biomass change prediction method

Abstract

The invention relates to a nuclear power plant water intake marine biomass change prediction method, which is based on a soft measurement technology, and mainly comprises two aspects of modeling (training) and prediction (testing), and the modeling is a variable utilizing nuclear power plant water intake marine biomass influence factors, such as temperature, salinity, dissolved oxygen, turbidity,flow velocity and x-flow direction, Y-flow direction, Z-flow direction and other data, learning and training data such as a flow direction and the like by adopting different algorithms through data feature extraction so as to obtain an appropriate mathematical model. The marine organism change of the water intake is speculated mainly through the obtained model according to the actual variable of the site, so that the marine organism invasion degree and the possibility of water intake blockage are determined, and support is provided for comprehensively improving the cold source reliability of the nuclear power plant.

Description

technical field [0001] The invention relates to the safety field of nuclear power plants, in particular to a method for predicting changes in marine biomass at water intakes of nuclear power plants. Background technique [0002] Soft measurement technology is a combination of automatic control technology, computer technology, and sensor technology. It uses easy-to-measure auxiliary variables and applies computer technology to select other easy-to-measure auxiliary variables for leading variables that are difficult to measure or cannot be measured temporarily. Model to infer or estimate is to replace hardware measurement with software to realize the technology of leading variable measurement; when establishing a soft sensor model for marine biomass at the water inlet of a nuclear power plant, it can predict the marine biomass at the water inlet and intuitively reflect changes in marine biomass , It has great guiding significance for managers to make decisions and the timing o...

AI Technical Summary

Problems solved by technology

[0003] At present, the analysis of the degree of marine organism invasion and the occurrence of blockage of water intakes is basically based on sonar detection technology, mainly after analyzing the trend of the number of specific marine organisms within a certain period of time and within a certain range, and then analyzing the subsequent outbreaks of marine organisms per unit time. However, due to the extremely short time for the outbreak of marine organisms and the large impact of ocean hydrology and ocean currents, there is a certain lag in the use of this detection method, and there is often very little time left for preventive measures such as salvage, and it cannot be fully utilized in advance. warning target

Most of the research at home and abroad is focused on data analysis, detection optimization, and improvement of detection efficiency, but there are still relatively few studies on the establishment of marine biological trend models based on ocean characteristics.

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