Continuous pump storage unit axis measuring and adjusting method

Abstract

A continuous pump storage unit axis measuring and adjusting method includes the steps of: S1. sensor calibration: calibrating a sensor of each channel before barring; S2. data sampling: sampling in an independent parallel mode of multiple channels; S3. data filtering: using FIR Chebyshev type-I low-pass digital filtering; S4: phase recognition: using phase recognition technology to recognize and mark an initial phase and a phase of a sampling point; and S5. sine fitting: adopting particle swarm optimization to obtain a throw initial phase, a throw amplitude value and a throw DC component of a throw sine curve. The continuous pump storage unit axis measuring and adjusting method provided by the invention can realize data sampling of any rotation angle and any point number, filters higher interference harmonics, and solves the problem of nonuniform rotation speed of a large shaft through phase recognition technology; the method also improves axis inspection precision of a unit, shortens barring time, reduces manpower required by barring, and brings huge economic benefits; and a system interface that is adopted is concise, the method is easy to operate and implement, and the method has general popularization value for unit axis inspection and adjustment.

Description

technical field [0001] The invention relates to a method for measuring and adjusting the axis of a continuous pumped storage unit. Background technique [0002] The axis measurement, analysis and adjustment of large vertical hydro-generator units (including pumped storage units) are the most critical procedures in the maintenance of the unit, occupying most of the maintenance period of the unit, and the success or failure of the axis adjustment work will directly affect the maintenance of the unit The success or failure of the work, this is because the condition of the axis of the unit will directly affect the stability of the unit operation and the normal operation of the guide bearing. Fast and accurate axis adjustment technology will greatly improve the efficiency of maintenance work and bring huge economic benefits, which is of great significance to the improvement of power plant benefits. [0003] At present, the axis adjustment and processing technology of my country'...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for measuring and adjusting the axis of a continuous pumped storage unit, which can realize data sampling at any rotation angle and any number of points, filter out high-order interference harmonics, and solve the problem by phase recognition technology For the problem of uneven rotation speed of the large shaft, the system can not only reduce the working time of cranking to a large extent, but also greatly improve the accuracy because the system adopts data sampling at any point; because the system adds phase recognition Technology and artificial intelligence algorithm data fitting data processing methods make the turning results more in line with engineering reality and further improve accuracy, providing reliable data for unit maintenance work

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