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Manufacturing supervision
Non-Destructive Testing
Grid connection test
Quality assurance and acceptance
Operation and maintenance

Manufacturing supervision

In combination with the requirements of the procurement contract, technical standards and technical conditions of the order, the important parts of the wind turbine host, blades, generators, tower tubes, box transformers and other important parts shall be supervised in the factory to help customers strictly control the quality.

Dene the scope and period of supervision Establish a manufacturing supervision team and carry out relevant training Preparation of supervision work plan and implementation rules Supervise the assembly process of key parts and complete machine Prepare the manufacturing supervision log and other documents and timely feed back the manufacturing supervision progress Provide wind power equipment manufacturing supervision report

Non-Destructive Testing

Blade Mainly use PAUT to perform NDT on the bonding width of wind turbine blade web
Nacelle and tower tube It mainly applies PAUT to perform NDT on connecting bolts of nacelle and tower tube,and UT&MT&RT is mainly used to perform NDT on welds of tower
Hub Mainly apply UT&MT to NDT of turbine hub
Principal axis It mainly applies PAUT to NDT of the main shaft of the wind turbine
Pitch system UT is mainly used for NDT of pitch tooth surface
Yaw System UT is mainly used for NDT of yaw tooth surface

Grid connection test

1.Wind farm power quality test 2.Test of active power control capability of wind farm 3.Test of reactive power control capability of wind farm
1.Wind farm power quality test
[1] Test conditions During the test, the actual operating capacity of the wind power plant shall be greater than 95% of the rated capacity of the wind power plant, and the actual grid connection of the wind power plant shall not change
[2] Test items Flash, harmonic and inter-harmonic
[3] Test equipment Voltage transformer, current transformer and data acquisition system
[4] Test result Flash, harmonic and inter-harmonic, wind farm operating frequency
2. Test of active power control capability of wind farm
[1] Normal operation active power change of wind farm
[2] Wind farm gridconnected active power change
[3] Normal shutdown active power of wind farm
3.Test of reactive power control capability of wind farm
[1] Reactive power capacity validate
Operating condition adjustment: （1） SVG reactive adjustment capacity test （2）Reactive adjustment capacity test of single wind turbine generator set Reactive capacity verication test under 60% active power condition: （1）SVG reactive regulation capacity test （2）Reactive adjustment capacity test of single wind turbine generator set
[2] Reactive power regulation
Test of inductive and reactive power regulation capacity of wind farm:： （1）adjustment of operating condition （2）inductive and reactive regulation capacity test under 20% active working condition （3）inductive and reactive regulation capacity test under 60% active working condition （4）inductive and reactive regulation capacity test under 80% active working condition Wind farm reactive regulation capacity test:： （1）operation condition adjustment （2）reactive regulation capacity test under 20% active condition （3）reactive regulation capacity test under 60% active condition （4）reactive regulation capacity test under 80% active condition

Quality assurance and acceptance

The acceptance of WTGS exiting the warranty period refers to the systematic inspection and evaluation of WTGS before the warranty period specied in the contract.

Inspection of handover of unit data, operation and maintenance archives, materials, etc Operation data analysis of unit state, availability, power curve, etc Inspection of conformity, sub-system, large parts and auxiliary equipment of single unit Performance test of power curve, power quality, noise, etc Rectication suggestions and review after rectication

Operation and maintenance

Wind power operation and maintenance is a series of comprehensive production management work carried out for the wind power plant/project, aiming at ensuring the safe, standard, ecient and high-quality development of the production work of the wind power plant station, ensuring the smooth progress of the production work of the wind power project, and completing the production plan/task/target.

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