Off-line Wind Turbine Condition Monitoring and Fault Diagnosis System

This is why Beijing Hanergy Hua Technology Co., Ltd. focuses on wind turbines.

Obstacle monitoring and diagnosis needs, combined with Xi Jiaotong University School of Mechanical Engineering (machine

Location of the State Key Laboratory of Mechanical Manufacturing System Engineering) * * * With the development.

High-tech products. The system fully considers the transmission chain of the wind turbine.

According to the component structure, variable speed operation conditions and special use environment, the most advanced data acquisition system and vibration analysis are adopted.

This analysis technology can realize the monitoring and fault diagnosis of generator sets, and accurately locate the specific parts of machine faults.

In order to carry out early prevention and maintenance, make maintenance change from passive to active, and predict the service life of equipment for customer maintenance.

This strategy provides a scientific basis and greatly reduces the maintenance cost of equipment.

Monitoring object

system composition

Data collector: collecting vibration data, USB transmission, external power supply.

Acceleration sensors: 8, with magnetic seats, attached to the equipment to measure the acceleration value of the equipment.

Speed sensor: 1, which measures the speed of high-speed shaft.

Notebook computer: Set sampling parameters, check sampling status, save sampling data, and make analysis and diagnosis.

System characteristics

Start-stop full state detection

USB is used for high-speed acquisition, and the upper computer stores the data in real time, so that the collected data is recorded without omission.

The whole process of the machine from startup, operation to shutdown ensures the accuracy of data analysis and diagnosis.

Completely targeted at wind turbines.

Synchronous acquisition of instantaneous velocity, using unique second-generation wavelet and multiwavelet analysis, is not only suitable for

Fixed propeller and fixed speed fan is especially suitable for the operation characteristics of variable speed wind turbine.

Multi-channel synchronous acquisition

Multi-channel synchronous data acquisition can be used for deceleration main bearing, gearbox, generator and yaw.

The machine and other components are monitored at the same time, which greatly shortens the data acquisition time.

Accurate and reliable data analysis

Adopt a variety of advanced fault diagnosis technologies at home and abroad, analyze fault types, judge fault sources,

Accurately identify fan faults.

Simple and convenient operation

Friendly man-machine interface, rich data charts, the operator only needs simple operation to complete.

The whole process of data collection, analysis and diagnosis.

System function

Data acquisition function

The system can be extended to 32 channels at most, realizing synchronous quasi-online acquisition and storage of multi-channel fans.

Vibration and speed and other related parameters.

Data analysis function

Mainly for waveform characteristic analysis, correlation analysis, power spectrum, * * * vibration demodulation, cepstrum,

Calculus, precise spectrum, axis trajectory, holographic spectrum, full spectrum analysis, etc.

Expert fault diagnosis function

Fatigue damage, fracture, imbalance and dislocation of fan shafting, bearings, gears and other transmission parts.

Accurate diagnosis of loose fault.

Unique function

Classical wavelet packet decomposition, second generation wavelet packet decomposition and multiwavelet analysis are adopted, which are suitable for composition.

Primary fault separation and decoupling can effectively extract nonlinear and nonlinear faults under strong noise background.

The stable weak vibration signal can effectively diagnose the vibration of wind turbine, and it can be diagnosed quickly and accurately.

Composite fault characteristics of fan gearbox.

Database function

A vibration database can be established for a wind farm or a single wind turbine to predict the life of components.

Measurement provides a technical basis.

Maintenance record storage function

The diagnosis conclusion and maintenance history of all test equipment are saved and can be queried at any time, which is realized.

Informatization and modernization of enterprise equipment management.

The report function can generate vibration report interactively, support report printing and support vibration data import and export.

Support and service

Specialized technical training

Provide users with technical training in system installation, software use and sensor installation and distribution to ensure operation.

Personnel can operate the system independently.

technical support

Provide users with professional technical advice on complex vibration spectrum and waveform information during use.

Query and analyze diagnosis.

technical service

Provide on-site monitoring, analysis, diagnosis and other technical services for customer-specified components, and issue professional skills.

Surgical report.

Warranty period refers to the state inspection of the operation of the fan when the warranty period expires, and the inspection report is issued.

Provide a basis for acceptance.

technical parameter

The input channels are sampled synchronously, and the standard is 8 channels, which can be extended to 32 channels at most.

Signal types can measure acceleration, velocity and displacement.

Interface mode BNC

The sampling method is free single point, synchronous whole period and full recording sampling.

The sampling frequency is 51.2khz.

Resolution 24-bit precision anti-aliasing filter

Dynamic range 102dB

Voltage range -5.0 ~ 5.0 volts

Working temperature -40 ~ 70℃

Overall dimensions: 365mmx280mmx 185mm.

The whole machine weighs 6kg.

System application

HET-P wind turbine off-line condition monitoring and fault diagnosis system has been widely used by many large domestic wind power companies.

Generators provide monitoring services, including Vestas, GE, Nordex, Huarui, Goldwind and other models, and their fault analysis and diagnosis results are as follows.

It has been recognized and praised by customers, which provides a reliable reference for customer maintenance strategies.

Equipment sampling configuration fan start-stop analysis envelope spectrum analysis bearing fault cepstrum analysis gearbox signal _ _

Beijing Hanergy Hua Technology Co., Ltd. Address: Room 6025, Innovation Building, Fengtai Science Park,No. West Fourth Ring South Road 10 1, Fengtai District, Beijing.