as a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. under the background of carbon peaking and carbon neutrality, the development prospect of china's wind power industry is very broad. china is rich in wind resources, especially in the northwest, northeast, and coastal areas. vigorously developing wind power has long-term significance for the adjustment of china's power structure. at present, there are many types and numbers of wind turbines installed in china. how to ensure the normal and stable operation of the power station and ensure the power generation has become the focus of major enterprises.
as an inspection, testing and certification group that has been established for many years, noa has provided professional wind turbine inspection and testing services for many owners, power plant purchasers, investors, insurers, etc., and has won the recognition and trust of customers. in the current rapid development of the wind power industry, noa adheres to high-standard technical requirements and high-level technical services. by dispatching professional engineers, it can conduct a comprehensive inspection, inspection and acceptance of the entire wind farm. the company has professional and technical personnel in many fields. it can analyze, evaluate and identify technical problems, asset problems, design problems and document consistency problems of the entire wind power plant, and provide professional third-party services for our customers. as a professional and authoritative comprehensive third-party inspection, testing and certification organization, noa has conducted inspection and testing services for more than 1gw wind farms, and has accumulated valuable practical experience in the wind power market. in the future, we will uphold noa's high standards and high standards. requirements, in accordance with national standards and industry requirements, to give back to the enterprise with a higher level of service, to escort various wind power enterprises.
1. 240-hour trial operation acceptance
240-hour trial operation acceptance refers to the acceptance of the wind turbine after it is installed and debugged on site to generate electricity normally. each unit shall operate continuously, stably and without failure for 240 hours. during this period, if the unit reaches the rated output when the rated wind speed occurs, it will be deemed as qualified for trial operation. if the rated wind speed does not occur during the 240-hour trial operation, the trial operation will be postponed for 120 hours. the rated wind speed has not yet appeared within the above-mentioned extension time, but the unit is operating normally, and it is also regarded as qualified for trial operation.
the benefits of 240-hour trial operation acceptance:
（1）. ensure that the safety, power characteristics, power quality, availability and noise level of wind turbines meet the design requirements;
（2）. help the fan to form a stable production capacity, thereby promoting the maximization of enterprise benefits.
2. the quality assurance acceptance
1. fan inspection
in the entire life cycle of wind power, the inspection of wind power equipment is the top priority.
the inspection of the fan mainly includes the inspection of the blade part, the inspection of the pitch system, the inspection of the braking system, the inspection of the generator system, the inspection of the transformer, the yaw system, the inspection of the hydraulic system, the inspection of the meteorological equipment, the fire protection device, the main control cabinet of the engine room, the frequency conversion cabinets, tower base control cabinets, tower parts, switch station inspections, etc.
2. fan testing
fan testing can be divided into non-destructive testing, bearing testing, endoscope testing, lightning protection testing, output voltage testing, oil sample analysis, etc.
3. other wind power station inspection and test content
other wind power station inspection and test contents include lightning protection inspection, blade internal and external inspection, generator insulation inspection, gearbox endoscopy inspection, foundation settlement, tower non-destructive testing, hub non-destructive testing, spindle non-destructive testing, blade phased array testing, blade robot inspection, routine inspection, foundation levelness inspection, tower levelness inspection, foundation stress wave non-destructive testing, tower bolt preload, foundation crack detection, oil detection, electrical control system function test, yaw and pitch gear wear detection.
taking the vibration of the bearing seat as an example, the reasons for the vibration are mainly divided into five reasons:
(1) vibration caused by unbalanced rotor mass; (2) vibration caused by friction between dynamic and static parts; (3) vibration caused by abnormal rolling bearing; (4) vibration caused by insufficient foundation rigidity of bearing seat; (5) coupling vibration caused by abnormal device
the acceptance content includes document acceptance, single unit acceptance and other acceptance items.
tel： 86-400 821 5138
fax： 86-21 3327 5843
email：noa@noagroup.com
