Detail of GB/T 32077-2025

Introduction of GB/T 32077-2025

GB/T 32077-2025 Wind energy generation systems - Pitch system of wind turbines 1 Scope This document specifies the working conditions, technical requirements, test methods, inspection rules, delivery requirements, installation and maintenance of the pitch system of grid-connected wind turbines (hereafter referred to as pitch system). This document applies to the pitch system of grid-connected horizontal axis wind turbines, and the pitch drive is hydraulic or electric. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191 Packaging - Pictorial marking for handling of goods GB/T 1029 Test procedures for three-phase synchronous machines GB/T 1032 Test methods for three-phase asynchronous motors GB/T 1311 Test methods for direct current machines GB/T 2422 Environmental testing - Guide to drafting of test methods - Terms and definitions GB/T 2423.1-2008 Environmental testing - Part 2: Test methods - Tests A: Cold GB/T 2423.2-2008 Environmental testing for electric and electronic products - Part 2 : Test methods - Tests B : Dry heat GB/T 2423.3-2016 Environmental testing - Part 2 : Testing method - Test Cab : Damp heat, steady state GB/T 2423.4-2008 Environmental testing for electric and electronic products - Part 2: Test method - Test Db: Damp heat, cyclic (12h+12h cycle) GB/T 2900.1 Electrotechnical terminology - Fundamental terms GB/T 2900.53 Electrotechnical terminology - Wind turbine generator systems GB/T 3222.2 Acoustics - Description, measurement and assessment of environmental noise - Part 2 : Determination of sound pressure levels GB/T 3480 (all parts) Calculation of load capacity of spur and helical gears GB/T 3482-2008 Lightning test method for electronic equipments GB/T 3766 Hydraulic fluid power - General rules and safety requirements for systems and their components GB/T 4208 Degrees of protection provided by enclosure (IP code) GB/T 4365 Electrotechnical terminology - Electromagnetic compatibility GB/T 5226.1 Electrical safety of machinery - Electrical equipment of machines - Part 1 : General requirements GB/T 6388 Transport package shipping mark GB/T 7251.1-2023 Low-voltage switchgear and controlgear assemblies - Part 1: General rules GB/T 7935 Hydraulic fluid power - General requirements for hydraulic components GB/T 9969 General principles for preparation of instructions for use of industrial products GB/T 11287-2000 Electrical relays - Part 21 : Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section one : Vibration tests (sinusoidal) GB/T 12113 Methods of measurement of touch current and protective conductor current GB/T 13729-2019 Remote terminal unit equipment GB/T 14039 Hydraulic fluid power - Fluids--Method for coding the level of contamination by solid particles GB/T 14537-1993 Shock and bump tests on measuring relays and protection equipment GB/T 14598.27-2017 Measuring relays and protection equipment - Part 27 : Product safety requirements GB/T 15543-2008 Power quality - Three-phase voltage unbalance GB/T 16935.1-2023 Insulation coordination for equipment within low-voltage supply systems - Part 1 : Principles, requirements and tests GB/T 17626.2-2018 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test GB/T 17626.3-2023 Electromagnetic compatibility - Testing and measurement techniques - Part 3 : Radiated, radio-frequency, electromagnetic field immunity test GB/T 17626.4-2018 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient / burstimmunity test GB/T 17626.5-2019 Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test GB/T 17626.6-2017 Electromagnetic compatibility - Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields GB/T 18451.1-2022 Wind energy generation systems - Design requirements GB/T 19292.1-2018 Corrosion of metals and alloys - Corrosivity of atmospheres - Part 1 : Classification, determination and estimation GB/T 19568 Wind turbines - Assembling and installation regulation GB/T 19608.1 Classification of special environmental condition - Part 1 : Dry heat GB/T 19608.2 Classification of special environmental condition - Part 2 : Dry heat-desert GB/T 19608.3 Classification of special environmental condition - Part 3 : Plateau GB/T 19963.1-2021 Technical specification for connecting wind farm to power system -Part 1 : On shore wind power GB/T 20641 Empty enclosures for low-voltage switchgear and controlgear assemblies -General requirements GB/T 20663-2017 Accumulators GB/T 21714.4 Protection against lightning - Part 4 : Electrical and electronic systems within structures GB/T 22473.1-2021 Batteries used for energy storage - Part 1 : Photovoltaic off-grid application technical conditions GB/T 29717-2013 Rolling bearings - Wind power generators yaw and pitch bearings GB/T 30790.5 Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 5: Protective paint systems GB/T 30790.6-2014 Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 6: Laboratory performance test methods GB/T 33629-2024 Wind energy generation systems - Lightning protection JB/T 5558 Test method of reduction (increase) gear unites JB/T 5777.2-2002 General specification for control and protection panel (cabinet, desk)of secondary circuit of power system JB/T 5777.3-2002 Basic testing method for control and protection panel (cabinet, desk) of secondary circuit of power system JB/T 10427 General hydraulic system of wind turbine generator systems NB/T 10567 Code of pitch system maintenance for wind turbine generator system NB/T 10924-2022 Technical specification for pitch motor used in wind turbine generator system NB/T 31126-2017 Technical specification for pitch converter of wind turbine NB/T 31149-2018 Specification for ultracapacitors used in pitch system of wind turbine generator system 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 2422, GB/T 2900.1, GB/T 2900.53 and GB/T 4365 as well as the following apply. 3.1 pitch system equipment controlling and adjusting the blade pitch angle of wind turbines Note: It mainly includes pitch control device, pitch drive device, backup power source, pitch actuator, pitch lubrication device and pitch detection device. 3.2 electricpitch system equipment adjusting the blade pitch angle by driving the pitch gearbox with a pitch motor Note: It mainly includes pitch controller, pitch servo driver or frequency converter, backup power supply, pitch motor, pitch gearbox, pitch bearing, pitch lubrication system, pitch detector and other components. 3.3 hydraulicpitch system equipment adjusting the blade pitch angle by driving the linkage mechanism with hydraulic cylinder (or other hydraulic actuator) Note: It mainly includes pitch controller, hydraulic station, valve manifold, accumulator, hydraulic cylinder, linkage mechanism, pitch bearing, pitch lubrication system, pitch detector and other components. 3.4 multi-driver pitch system equipment adjusting the pitch angle of a blade by using two or more pitch drive equipment 3.5 pitch drive equipment equipment driving the pitch actuator to act Note: The pitch drive equipment in the electricpitch system includes pitch servo driver (or frequency converter) and motor; the pitch drive equipment in multi-driver pitch system includes hydraulic station and valve manifold. 3.6 pitch actuating equipment equipment driving the blades of wind turbine to rotate to adjust the pitch angle of the blades Note: In the electricpitch system, pitch actuating equipment includes pitch control gear box and pitch control bearing; in hydraulicpitch system, the pitch control actuator includes hydraulic cylinder (or other hydraulic actuators), linkage mechanism and pitch control bearing. 3.7 the maximum pitch rate maximum allowable pitch angle change rate 3.8 feathering change of the geometric angle of attack of the wind turbine blade to the state that the wind turbine blade approaches zero lift 3.9 fine change of the geometric angle of attack of the wind turbine blade to the state that the wind turbine blade approaches the maximum lift 3.10 safety position pitch angle position that the wind turbine can ensure safety of the whole turbine 3.11 pitch system target position error difference between the actual position and the target position of the blade pitch angle sensor after pitch action by the pitch control actuator upon receiving pitch instructions from wind turbine control system 3.12 pitch system following error difference between the actual position and the target position of the blade pitch angle sensor at a moment after the pitch system reaching a stable speed upon receiving continuous pitch control instructions from wind turbine control system

Contents of GB/T 32077-2025