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Draught fan inhaul cable tension measuring method and system, storage medium and computing equipment

A tension measurement and cable tension technology, applied in the direction of measuring the frequency change force by measuring the stress of the vibration element, can solve the problems of complex installation, poor tooling versatility, damage to the integrity of the cable, and low accuracy requirements. , The effect of simple installation and cost reduction

Pending Publication Date: 2021-09-07
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method to measure the force of the floating fan cable, the device needs to be installed in the middle of the cable, that is, the structure of the cable needs to be adjusted, such as cutting the cable into two sections, which changes the cable to a certain extent. The original structure destroys the integrity of the cables. At the same time, it is necessary to customize special tooling for different cables. The universality of the tooling is poor, and the installation is more complicated, which is not conducive to the monitoring of the cable force on the floating wind turbine.

Method used

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  • Draught fan inhaul cable tension measuring method and system, storage medium and computing equipment
  • Draught fan inhaul cable tension measuring method and system, storage medium and computing equipment
  • Draught fan inhaul cable tension measuring method and system, storage medium and computing equipment

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Effect test

Embodiment 1

[0051] This embodiment discloses a method for measuring the tension force of a fan cable. The method is based on the principle of string vibration as the basis for force measurement of the cable, regards the cable to be tested as a string, and installs a The acceleration sensor and an acceleration collector are installed at the preset position of the fan, and the acceleration collector is connected to the two acceleration sensor signals, and the vibration natural frequency of the cable to be tested is measured through the acceleration sensor and the acceleration collector, and then according to the string vibration The fundamental frequency expression formula calculates the pulling force of the cable to be tested, and finally corrects the pulling force for the influence of gravity to obtain the final cable pulling force. It includes the following steps:

[0052] 1) Signal acquisition: The acceleration response of the tested cable in two orthogonal directions is sensed by the t...

Embodiment 2

[0067] This embodiment discloses a virtual inertia control system for wind turbines, including a signal acquisition module, a signal filtering module, a frequency spectrum calculation module, a frequency extraction module, a tension calculation module and a gravity influence correction module;

[0068] The signal acquisition module adopts two acceleration sensors and an acceleration collector, and the two acceleration sensors are installed at the two ends of the cable to be measured respectively, and the acceleration collector is installed at the preset position of the blower fan, and is connected with the two acceleration sensors. Sensor signal connection; the acceleration response of the measured cable in two orthogonal directions is sensed by the two acceleration sensors on the measured cable, and output in the form of a signal, and then the output of the two acceleration sensors is collected by the acceleration collector Signals are saved as a data file at regular intervals...

Embodiment 3

[0082] This embodiment discloses a storage medium, which stores a program. When the program is executed by a processor, the method for measuring the pulling force of the fan cable described in Embodiment 1 is realized.

[0083] The storage medium in this embodiment may be a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a U disk, a mobile hard disk, and the like.

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Abstract

The invention discloses a draught fan inhaul cable tension measuring method and system, a storage medium and computing equipment. The draught fan inhaul cable tension measuring method comprises the steps of taking a string vibration principle as the basis of inhaul cable force measurement, taking a to-be-measured inhaul cable as a string, installing an acceleration sensor at each of the two ends of the to-be-measured inhaul cable, installing an acceleration collector at a preset position of a draught fan, enabling the acceleration collector to be in signal connection with two acceleration sensors, measuring the vibration inherent frequency of a to-be-measured inhaul cable by the acceleration sensor and the acceleration collector, then calculating a pulling force of the to-be-measured inhaul cable according to a fundamental frequency expression formula of string vibration, and finally subjecting the pulling force to gravity influence correction to obtain the final pulling force of the inhaul cable. By the adoption of the draught fan inhaul cable tension measuring method and the system, an inhaul cable tool does not need to be additionally customized, the original structure of the inhaul cable is maintained, operation is easy, universality is good, and cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of safety monitoring of floating fan cables, in particular to a method, system, storage medium and computing equipment for measuring the tension of a fan cable. Background technique [0002] With the rapid development of offshore wind power, offshore wind turbines are constantly moving from offshore and shallow seas to far seas and deep seas. According to research, floating offshore wind turbines will be more economical than fixed offshore wind turbines when the water depth reaches 60m, and they are more feasible in deep seas. Therefore, floating wind turbines have greatly expanded the application range of offshore wind power. Floating wind turbines are in the hot research stage. Europe took the lead in building floating wind farms, which have already been connected to the grid. As far as the current situation is concerned, the structure of floating wind turbines is diverse, and this diversity is not only r...

Claims

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Application Information

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IPC IPC(8): G01L1/10
CPCG01L1/10Y02E10/72
Inventor 文智胜魏煜锋梁天
Owner GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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