Nuclear turbine system fault early warning method and system

Abstract

The invention relates to a nuclear turbine system fault early warning method and system, and the method comprises the steps: obtaining the signal data, collected in real time, of a plurality of monitoring parameters of a turbine, and processing the signal data of each monitoring parameter, generating multi-dimensional matrix data according to the processed signal data of the plurality of monitoring parameters; sending the multi-dimensional matrix data into a pre-established state prediction model, and obtaining parameter prediction information of the steam turbine at the next moment accordingto the output of the state prediction model; outputting a state prediction result in real time according to the parameter prediction information; and judging whether the steam turbine is abnormal or not according to the state prediction result, and generating fault early warning information when the steam turbine is abnormal. By implementing the technical scheme of the invention, early warning canbe performed on the degradation state of the steam turbine system in advance, the prediction precision is high, and the reliability is high.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a failure warning method and system for a steam turbine system of a nuclear power plant. Background technique [0002] The steam turbine is a worm gear machine that converts the heat energy of steam into mechanical energy. It is one of the important equipment in nuclear power plants. Its operating status directly affects the economy and safety of the power plant. The status monitoring and fault warning of the steam turbine system have always been highly concerned. How to improve the stability and safety of steam turbine operation and improve the level of fault prediction is an urgent problem to be solved and studied. [0003] The steam turbine is a high-speed rotating equipment, and its rotor and stator gap is very small, which is both huge and precise equipment. In order to ensure the safe operation of the steam turbine, the steam turbine system of the nuclear power plant is equipp...

AI Technical Summary

Problems solved by technology

[0006] 1) A simple online over-threshold fault alarm based on real-time data is adopted, and an alarm is issued when or after a fault occurs, which cannot realize early warning of equipment deterioration status, resulting in only the combination of post-event maintenance and planned maintenance, which is low in efficiency and High cost and relatively passive

[0007] 2) The structure of the steam turbine is complex, which is a multi-parameter coupling complex system. Most of the existing monitoring systems are based on a single vibration signal for fault monitoring and diagnosis, which cannot well cover many types of non-vibration faults in equipment operation, and the model structure established is relatively simple. , the prediction reliability and accuracy are poor, and it is difficult to reflect the real operating status of the equipment

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