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GB/T 25385-2019 English PDF (GBT25385-2019)

GB/T 25385-2019 English PDF (GBT25385-2019)

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GB/T 25385-2019: Wind turbines -- Operation and maintenance requirement

This Standard specifies the safety, personnel, equipment, environment and management requirements that are related to the operation and maintenance of onshore wind turbines. This Standard applies to the operation and maintenance of all grid-connected onshore units.
GB/T 25385-2019
ICS 27.180
F 11
Replacing GB/T 25385-2010
Wind turbines - Operation and maintenance
Issued by: State Administration for Market Regulation;
Standardization Administration of the PEOPLE Republic of
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Basic requirements ... 7
5 Operation requirements ... 11
6 Maintenance requirements ... 14
Appendix A (Informative) Lubrication cycle table ... 19
Appendix B (Informative) Maintenance work sheet ... 20
Appendix C (Informative) Regular maintenance items and requirements ... 21 Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 25385-2010, Operation and maintenance
requirement for wind turbines. Compared with GB/T 25385-2010, the main
technical changes, except editorial changes, are as follows:
-- Modify the contents of ?€?Scope?€? (see Chapter 1, Chapter 1 of version 2010); -- Remove ?€?Overview?€? of version 2010 (see Chapter 2 of version 2010);
-- Add ?€?Normative references?€? (see Chapter 2);
-- Add ?€?Terms and definitions?€? (see Chapter 3);
-- Add ?€?Basic requirements?€?, which makes basic requirements and
regulations for personnel, safety, operation and maintenance manuals
(see Chapter 4);
-- Remove ?€?Design requirements for safe operation, inspection and
maintenance?€? of version 2010 (see Chapter 3 of version 2010);
-- Remove ?€?Trial run instructions?€? of version 2010 (see Chapter 4 of version 2010);
-- Add ?€?Operation requirements?€? (see Chapter 5);
-- Add ?€?Maintenance requirements?€? (see Chapter 6);
-- Modify the nature of the appendixes (see Appendix A, Appendix C, and Appendix A, Appendix B of version 2010);
-- Add informative Appendix B ?€?Maintenance work sheet?€? (see Appendix B); -- Add ?€?First maintenance items and requirements?€? (see C.1);
-- Modify ?€?Semi-annual maintenance items and requirements?€? (see Table C.2, and Table B.1 of version 2010);
-- Modify ?€?Annual maintenance items and requirements?€? (see Table C.3, and Table B.2 of version 2010).
This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee for Standardization of Wind Machinery (SAC/TC 50).
The drafting organizations of this Standard: Beijing Goldwind Science and Creation Windpower Equipment Co., Ltd., Xinjiang Goldwind Sci and Tech Co., Ltd., Hohhot Branch of Chinese Academy of Agricultural Mechanization
Sciences Co., Ltd., Envision Energy (Jiangsu) Co., Ltd., Beijing Eulikind Technology Co., Ltd., Mingyang Smart Energy Group Limited, Jiangsu
Goldwind Science and Technology Co., Ltd., Guodian United Power Technology Co., Ltd., Gamesa Wind Turbine (Tianjin) Ltd., Vestas Wind Technology (China) Co., Ltd., Shanghai Electric Wind Power Group Co., Ltd., Zhejiang Windey Co., Ltd., Dongfang Electric Wind Power Co., Ltd., Three Gorges Electrical and Mechanical Engineering Technology Corporation, China General Certification Center, Beijing Tianrun New Energy Investment Co., Ltd., Longyuan (Beijing) Wind Power Engineering Technology Co., Ltd., CSIC (Chongqing) Haizhuang Windpower Equipment Co., Ltd., Xi'an Fengchuang Energy Technology Co.,
Ltd., Beijing Qianyuan Wind Power Technology Co., Ltd., CRRC Yongji Electric Co., Ltd., CRRC Zhuzhou Institute Co., Ltd., Sinoma Wind Power Blade Co., Ltd.
The drafters of this Standard: Feng Tao, Li Lishan, Ren Jun, Zhu Hongdong, Hu Bin, Huang Chen, Zhang Qingyun, Zhao Hui, Xue Zhenfeng, Ning Qiaozhen, Chu Jingchun, Wang Wenyue, Li Yue, Yan Changkuan, Bu Xiangyu, Zhu Bing, Sun Wenguang, Chen Kangsheng, Cai Jun, Gao Ruoyu, Yang Zhangbin, Yang
Hongyuan, Li Wenqian, Yao Wenjun, Wang Bo, Zhou Shidong, Qin Ling, Yao
Lin, Zhuang Yan, Duan Zhiqiang, Shang Gang, Li Chengliang, Duan Yanfang. The previous versions of the standards which are replaced by this Standard are: -- GB/T 25385-2010.
Wind turbines - Operation and maintenance
1 Scope
This Standard specifies the safety, personnel, equipment, environment and management requirements that are related to the operation and maintenance of onshore wind turbines (hereinafter referred to as "units").
This Standard applies to the operation and maintenance of all grid-connected onshore units.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 2900.1, Electrotechnical terminology - Fundamental terms
GB/T 2900.13, Electrotechnical terminology - Dependability and quality of service
GB/T 2900.53, Electrotechnical terminology - Wind turbine generator
GB/T 35204-2017, Wind turbines - Safety manuals
GBZ 188-2014, Technical specifications for occupational health surveillance DL/T 796, Wind farm safety procedures
DL/T 797, Code on maintenance of wind farm
3 Terms and definitions
Terms and definitions determined by GB/T 2900.1, GB/T 2900.13, GB/T
2900.53 and DL/T 797, and the following ones are applicable to this document. 3.1 Operation
The production activity that is operated on the unit to ensure the safe and reliable operation of the unit, according to the grid conditions, dispatch requirements, weather conditions, power transformer substation and unit conditions.
3.2 Maintenance
The maintenance activity to ensure the normal operation of the unit according to the design requirements, unit conditions, data analysis results, including regular maintenance, condition-based maintenance, fault handling, flaw
handling and so on.
3.3 First maintenance
The first regular maintenance after the unit is connected to the grid for the first time; the deployment time shall not exceed three months after the grid
connection of the unit.
3.4 Semi-annual maintenance
The maintenance work of the unit that is carried out the first half a year after the first grid connection of the unit and every subsequent semi-annual period of an odd number of times.
3.5 Annual maintenance
The maintenance work of the unit that is carried out one year after the first grid connection of the unit and every subsequent year of integral multiples. 3.6 Work sheet
The record file that is used to record process information and work result data during unit operation and maintenance.
3.7 Flaw
Occurred anomalies and hidden dangers during the unit operation.
3.8 Consumables
Materials that are preventively replaced according to the design requirements of the unit and the statistical laws of equipment wear and aging.
3.9 Spare parts
Electrical and mechanical parts that are required for fault handling during operation and maintenance of the unit.
4 Basic requirements
4.1 Personnel requirements
4.1.1 General requirements for personnel
All personnel involved in the unit work shall meet the following requirements: a) In health; have physical examination from enterprise-accepted hospitals with physical examination qualifications according to relevant standards; do not have symptoms that hinder the operation and maintenance of the
unit. Electrical workers and those who work high above the ground shall meet the requirements of Chapter 9 of GBZ 188-2014.
b) Have work license and certified qualification proof. For example, the worker who work high above the ground shall hold a high-altitude
operation permit; the personnel engaged in electrical work shall hold an electric operation permit.
c) Master first-aid on electric shock sites and high-altitude rescue methods; master the use methods of safety tools/appliances and fire-fighting
equipment, so as to cope with safety accidents during operation and
d) Master the operating conditions and performance parameters of the wind farm equipment; master the working principle, basic structure and
operation of the relevant units.
e) Master various of condition information, fault signals and fault types of the unit and emergency facilities; master the reasons and handling methods
for general faults.
f) Master the work ticket system; master the requirements for filling and using work tickets.
4.1.2 Requirements for operating personnel
Operating personnel shall meet the following requirements:
a) Master the use of wind farm data collection and monitoring, weather
forecasting, communication, scheduling and other systems;
b) Be able to strictly enforce the power grid and government-related
department instructions;
c) Be able to complete the statistics and calculation of various operational indicators of the wind farm;
d) Have the ability of data analysis; be able to carry out operational data and indicator analysis work on a regular basis.
4.1.3 Requirements for maintenance personnel
Maintenance personnel shall meet the following requirements:
a) Master the unit maintenance work manual. Carry out any inspection and maintenance work within the planned time; strictly enforce the operation requirements in accordance with the manual.
b) Master the maintenance process, procedures, commissioning methods
and quality standards of the unit.
c) For tools and instruments for maintenance use, train to master the use and maintenance methods of the equipment; master the judgment and
treatment of general faults.
d) Master the filling specifications and requirements for the work sheet or other specific documents; fill and report them in time according to
4.2 Safety requirements
4.2.1 Before the work, perform the safety disclosure and record; formulate corresponding safety plans according to the operational risks.
4.2.2 Strictly follow the road traffic safety regulations of the wind farm; equip appropriate vehicles, to ensure the safety of the wind farm. Emergency supplies such as first-aid kits and emergency lights shall be equipped on the vehicles and regularly inspected, supplemented or replaced.
4.2.3 Equip wireless communication equipment and backup power supply; keep the contact between each operation point and the monitoring center at any time. Personnel shall not work alone in the unit.
4.2.4 Properly select and use personal protective equipment; perform detection on personal protective equipment regularly as required.
4.2.5 Before the maintenance work, know the weather. Do not maintain the unit during thunderstorms; do not approach the unit within 1 hour after the end of thunderstorm weather.
4.2.6 Before the maintenance work, stop the unit and set to ?€?maintenance?€? status, and hang a warning sign; after the maintenance work is completed, adjust the unit to ?€?running?€? status and remove the warning sign.
4.2.7 During the towering and operation, personnel shall ensure adequate lighting.
4.2.8 When ladders are used, personnel shall wear seat belt, protective shoes, non-slip gloves, and use anti-falling protective clothing.
4.2.9 When the engine room hoist is used, pay attention to the wind speed, wind direction and engine room direction. If necessary, use a wind rope or manual yaw to keep the chain away from the high-voltage lines and
transformers. During the lifting, personnel on the bottom of the tower shall be away from the hanging objects. Prevent falling objects from causing personal injury. Ensure that the hanging objects are well tied, no obstacles or safety hazards on the hanging route. Take password-based operations.
4.2.10 When entering the hub or working on the impeller, reliably lock the impeller first. When the impeller is locked, the wind speed shall not be higher than the maximum allowable wind speed that is specified by the unit.
4.2.11 During operation and maintenance, tools and parts shall not be thrown in the air. Tools and parts shall be placed in an orderly manner. After the operation and maintenance work, tools and parts shall be inspected and shall not be left in the unit.
4.2.12 For electrical operation, implement the safety requirements of ?€?power off, hang the tag and lock, power inspection, grounding, and isolation?€?.
4.2.13 When personnel enter the confined space, take necessary measures to ensure that the location is well ventilated.
4.2.14 For work that requires fire, prepare all fire prevention measures in advance.
4.2.15 Regularly inspect fire-fighting equipment such as unit fire extinguishers. 4.2.16 For cleaning such as dust and toner, provide personal protective gear to prevent dust from inhaling.
4.2.17 When the converter is operated and maintained, cut off the power on the low-voltage side of the transformer on the grid side; perform the operation after the power is measured and confirmed to be cut off.
4.2.18 When the hydraulic system is maintained, relieve the pressure for the corresponding hydraulic circuit.
4.2.19 During the work outside the engine room, use seat belts; hang the double hooks on the safety anchor point; when railing on the top of the engine room is used as the hanging point, the hanging point shall meet the design
requirements of the safety anchor point.
4.2.20 Before the high-speed shaft guard is removed, brake the high-speed shaft.
4.2.21 When approaching the rotating parts such as the high-speed shaft and the fluted disc, pay attention to safety and prevent pinching.
4.2.22 When cleaning the unit, the cleaning agent and absolute ethanol shall comply with relevant environmental protection requirements. Pay attention to fire prevention and ventilation during operation.
4.2.23 When the blade is frozen (the risk of falling ice outside the unit), keep away from the rotating surface of the impeller, and strictly forbid to stay in the dangerous area.
4.2.24 In case of thundering during operation, evacuate in time; when there is no time to evacuate, stand on the tower platform with both feet together and do not touch any metal objects.
4.2.25 In response to an emergency, the passages that rescuers may use shall be kept open.
4.2.26 In the emergency that directly threatens personal safety, the person in charge of the site has the right to stop the operation and organize the evacuation of the site.
4.2.27 For requirements which are not mentioned here, comply with DL/T 796. 4.3 Operation and maintenance file requirements
Operation and maintenance files shall contain the following contents:
a) equipment ledger;
b) equipment safety operation range and system description;
c) unit start and stop operation procedures;
d) unit subsystem and its operational description;
e) required conditions of the unit before maintenance work;
f) Define clear cycles, working methods, requirements, protective equipment, procedures and risks, according to the specific maintenance works
(including lubrication and bolt inspection);
Note: Appendix A lists some of the lubrication items and cycles for
g) recommended lists of consumables, spare parts, and tools;
h) maintenance work sheet (see Appendix B).
4.4 Environmental protection requirements
During the operation and maintenance of the unit, follow the relevant national environmental protection regulations; make garbage classification and
treatment; protect the surrounding environment of the unit, including soil, water, forest land and grassland.
5 Operation requirements
5.1 General requirements
5.1.1 The operation of the unit mainly includes:
a) monitoring and adjustment of the unit operation conditions;
b) unit operation data backup, statistics, analysis and reporting;
c) implementation and supervision of work tickets, operating tickets, etc.; d) When flaws or faults are found during operation and maintenance of the unit, reasonably operate the unit's operation mode and organize the
personnel to carry out corresponding work, so as to ensure the safe
operation of the equipment. If it belongs to the power grid dispatching jurisdiction, the operating personnel shall immediately report the power grid dispatch;
e) supervision and inspection of the implementation of the unit maintenance standards;
f) Record the operating data of the unit, including fault record, flaw record, lost power, abandoned wind rate, etc.;
g) Perform unit file management, including hoisting records, commissioning records, maintenance records, consumables and spare parts records,
drawings, etc.
5.1.2 Conditions that the unit shall have before it is put into operation: a) For long-term power-off and out-of-operation and newly-introduced units, check various components and devices (power supply, control power
supply, safety device, control device, remote communication device, high- voltage system, yaw system) of the unit according to the technical
requirements of the unit before they are put into operation. If it is in a normal state, start after the generator stator and the rotor insulation are checked qualified;
b) Before the maintained unit is started, confirm that the safety measures during the operation have been canceled;
c) The external and internal environmental conditions are in accordance with the operating conditions of the unit; the temperature, humidity and wind speed are within the design parameters of the unit;
d) Before it is manually started, the surface of the impeller shall be free of ice;
e) The unit power supply and control power supply are in the on position; the power phase sequence is correct; the three-phase voltage is balanced;
the frequency is normal; the unit control system self-test has no fault information;
f) All safety devices are in normal position; there is no fault, short circuit or withdrawal;
g) The oil temperature, oil pressure and oil level of each sub-system of the unit are normal; the energy storage device and brake device in the system work normally;
h) The remote communication device is in a normal state;
i) If it is unauthorized, do not modify the unit equipment parameters and protection settings; do not modify, short-circuit, shield or remove the control of the equipment or the measurement circuit wiring.
5.1.3 For the unit which has been powered-off and out-of-operation for more than three months, it should be maintained according to different lengths of time, including but not limited to the following maintenance items:
a) Check the shroud, engine room and other spaces for leakage of rain;
ensure that there are no water erosion parts in the unit;
b) Check every bolted connection for abnormalities such as looseness and corrosion;
c) In areas of high humidity, for the electrical control cabinet of the unit which has been placed with simple dehumidification equipment or appliances,
perform maintenance or replacement;
d) Check the corrosion of the electric control cabinet, gear box and yaw ring gear in the unit, and carry out maintenance on equipment that may have
condensation and corrosion;
e) Regularly check the performance of the internal battery and
supercapacitor of the unit. If it does not meet the requirements, record it, and process or replace it before the unit is restarted.
5.2 Data acquisition and monitoring system
5.2.1 The main conten...

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