Standard No.:	NB/T 31018-2018
English Name:	Wind Turbine Generator System Technical Specification of Electrical Pitch System
Chinese Name:	风力发电机组电动变桨控制系统技术规范
Professional Classification:	NB    Professional Standard - Energy
Issued by:	NEA
Issued on:	2018-06-06
Implemented on:	2018-11-1
Status:	valid
Superseding:	NB/T 31018-2011 Wind turbine generator system technical specification of electric pitch system
Language:	English
File Format:	PDF
Word Count:	10000 words
Price(USD):	270.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the technical requirements, test methods, inspection rules as well as marking, operation instructions, packaging, transport and storage of electric pitch control system of variable-speed constant-frequency wind turbine generator system. This standard is applicable to the electric pitch control system of grid-connected onshore horizontal axis wind turbine generator system, serving as the basis for design, manufacturing, testing and certification. 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 755-2008 Rotating electrical machines - Rating and performance 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 - 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 Electro-technical terminology - Wind turbine generator systems GB/T 2900.57 Electrotechnical terminology - Generation, transmission and distribution of electricity - Operation GB/T 3797-2016 Electrical control assemblies GB/T 3859.1-2013 Semiconductor converters - General requirements and line commutated converters - Part 1-1: Specification of basic requirements GB/T 4208 Degrees of protection provided by enclosure (IP code) GB/T 4365 Electrotechnical terminology - Electromagnetic compatibility GB 5226.1-2008 Electrical safety of machinery - Electrical equipment of machines - Part 1: General requirements GB/T 7251.1-2013 Low-voltage switchgear and controlgear assemblies - Part 1: General rules 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 14537-1993 Shock and bump tests on measuring relays and protection equipment GB/T 15543-2008 Power quality - Three-phase voltage unbalance GB/T 15969.1 Programmable controllers - Part 1: General information GB/T 15969.2 Programmable controllers - Part 2: Equipment requirements and tests GB/T 17626.2-2018 Electromagnetic compatibility (EMC) - Testing and measurement techniques - Electrostatic discharge immunity test GB/T 17626.3-2016 Electromagnetic compatibility - Testing and measurement techniques - Radiated radio-frequency electromagnetic field immunity test GB/T 17626.4-2018 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test GB/T 17626.5-2008 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 18451.1-2012 Wind turbine generator systems - Design requirements 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 Technical rule for connecting wind farm to power system GB/T 20641 Empty enclosures for low-voltage switchgear and controlgear assemblies - General requirements GB/T 21714.4-2015 Protection against lightning - Part 4: Electrical and electronic systems within structures GB/T 20540 Digital data communication for measurement and control - Fieldbus for use in industrial systems - Type 3: PROFIBUS specification - Part 6: Application layer protocol specification

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 5 Test methods 6 Test rules 7 Marking and operation instructions 8 Packaging, transport and storage Annex A (Informative) Calculation of charge and discharge time of capacitor