Error detection method and system for hydraulic unit vibration sensor, terminal equipment and readable storage medium

Abstract

The invention discloses an error detection method and system for a hydraulic unit vibration sensor, terminal equipment and a readable storage medium. A mechanical vibration generating device close tothe extremely low frequency characteristic of a hydraulic unit is selected; the vibration of the mechanical vibration generating device is measured by using a calibrated displacement sensor and a vibration sensor to be calibrated at the same time, and time domain waveform data of the vibration are collected; vibration time domain waveform data measured by the displacement sensor and the vibrationsensor are used for respectively calculating respective vibration amplitude and phase value; and finally, according to the vibration amplitude and the phase value of the calibrated displacement sensor, the measurement error of the vibration amplitude and the phase value of the to-be-calibrated vibration sensor at the extremely low frequency are calcualted. Compared with the prior art, the error detection accuracy and detection efficiency can be greatly improved, so that the measurement accuracy of the vibration sensor in the hydraulic unit is improved, and a guarantee is provided for safe andstable operation of the hydraulic unit.

Description

technical field [0001] The invention relates to the field of vibration measurement of a hydraulic unit, in particular to a method, a system, a terminal device and a readable storage medium for error detection of a vibration sensor of a hydraulic unit. Background technique [0002] With the increase of society's demand for electricity and the improvement of people's awareness of environmental protection, the importance of hydropower has gradually increased. The hydropower reserves of my country's rivers reach 680 million kilowatts. At present, 340 million kilowatts of developed installed capacity have been developed, and the annual power generation capacity is 1.2 trillion kilowatt-hours. [0003] At present, my country has built more than 47,000 small hydropower stations with an installed capacity of less than 50,000 kilowatts, with a total installed capacity of about 79.27 million kilowatts; 479 medium-sized hydropower stations with an installed capacity of 50,000 to 300,00...

AI Technical Summary

Problems solved by technology

However, in the existing technology, on the one hand, when testing the vibration of the hydraulic unit, the accuracy of the detection of low-frequency or even extremely low-frequency vibration signals is not satisfactory; on the other hand, each vibration sensor has different measurement errors , in the actual vibration measurement, the operating state of the hydraulic unit cannot be effectively monitored, which has a great adverse effect on the stability of the hydroelectric power generation and the operation of the hydraulic unit

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