Power plant circulating water pump predictive state evaluation method and system

Abstract

The invention discloses a power plant circulating water pump predictive state evaluation method and system, and the method comprises the steps: carrying out the outlier elimination and denoising of original operation data of a circulating water pump unit, carrying out the classification of the denoised original operation data, and carrying out the training optimization of a circulating water pumpoperation state prediction model based on the classified original operation data; performing predicting according to the optimized circulating pump operation state prediction model to obtain predictedoperation data of the circulating water pump unit in a future time period, and calculating expected data of the circulating water pump unit in the future time period according to the predicted operation data by adopting an online state monitoring method; and knowing the equipment state according to the residual error of the expected data and the predicted operation data, and achieving predictivestate evaluation. A data-driven empirical model is used for solving the problems that a traditional physical model is difficult to establish and insufficient in precision, state prediction of the circulating water pump is visually and effectively achieved, conversion from an after-event maintenance system of the circulating water pump of the nuclear power plant to a predictive maintenance system is achieved, and therefore the safety and economical efficiency of nuclear power equipment operation are improved.

Description

technical field [0001] The invention belongs to the field of power plant equipment state evaluation, in particular to a predictive state evaluation method and system for a circulating water pump in a power plant. Background technique [0002] As the last heat sink of a nuclear power plant, the circulating water system is called the blood of the nuclear power plant, and its equipment operation status directly affects whether the nuclear power plant unit can operate normally. The circulating water pump is the key equipment of the system. At present, the maintenance of the circulating water pump in domestic nuclear power plants is in the post-event maintenance and regular maintenance. There are problems such as long dismantling construction period, excessive maintenance, high cost-effectiveness ratio, and low intelligence level. Predictive maintenance is urgently needed. Institutional reform. However, the domestic nuclear power technology started late, and the existing online ...

AI Technical Summary

Problems solved by technology

The circulating water pump is the key equipment of the system. At present, the maintenance of the circulating water pump in domestic nuclear power plants is in post-event maintenance and regular maintenance. There are problems such as long dismantling period, excessive maintenance, high cost-effectiveness ratio, and low level of intelligence. It is urgent to complete predictive maintenance. system reform

However, domestic nuclear power technology started relatively late, and the existing online condition monitoring and evaluation technology (AAKR, etc.) has poor timeliness, which is far from meeting the needs of preventive maintenance of nuclear power plants.

At the same time, there is very little domestic research on predictive maintenance of nuclear power plant equipment, and it is urgent to study a scientific, effective, and high-precision predictive state assessment method

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