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GB/T 25308-2022 English PDF

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Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 25308-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$1019.00 · In stock
Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 25308-2022: DC filters for high voltage direct current (HVDC) transmission system
Status: Valid

GB/T 25308: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 25308-2022	1019	Add to Cart	7 days	DC filters for high voltage direct current (HVDC) transmission system	Valid
GB/T 25308-2010	RFQ	ASK	7 days	D.C. - Filters for HVDC transmission system	Obsolete

Similar standards

GB/T 19212.5 GB/T 10228 GB/T 25095 GB/T 16896.3 GB/T 16896.1

Basic data

Standard ID: GB/T 25308-2022 (GB/T25308-2022)
Description (Translated English): DC filters for high voltage direct current (HVDC) transmission system
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K40
Classification of International Standard: 29.200
Word Count Estimation: 50,553
Date of Issue: 2022-12-30
Date of Implementation: 2023-07-01
Older Standard (superseded by this standard): GB/T 25308-2010
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 25308-2022: DC filters for high voltage direct current (HVDC) transmission system

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 29.200 CCSK46 National Standards of People's Republic of China Replacing GB/T 25308-2010 DC filter for HVDC transmission system Posted on 2022-12-30 2023-07-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Conditions of use 2 4.1 Normal use conditions 2 4.2 Special Conditions of Use 3 5 Parameter Design Requirements 3 5.1 Design content 3 5.2 Type and parameter determination 4 5.3 Performance and rating 4 6 Equipment Design Requirements 10 6.1 Capacitors 10 6.2 Reactor 12 6.3 Resistor 13 6.4 Lightning arresters 13 6.5 Current Transformers 13 6.6 Isolating switch 13 6.7 Earthing switch 13 7 Other requirements 13 7.1 Anti-corrosion layer 13 7.2 Busbars and connecting wires 13 7.3 Clearances and creepage distances 14 7.4 Seismic Requirements 14 8 trials 14 8.1 General 14 8.2 Routine test (factory test) 15 8.3 Type test 18 8.4 Field test 23 8.5 Special tests 25 9 signs 27 Appendix A (informative) Commonly used DC filter structures in HVDC transmission systems 28 Appendix B (informative) The position of the DC filter in the DC system 32 Appendix C (Normative) DC Filter Capacitor Specifications 33 Appendix D (Normative) DC Filter Reactor Specifications 37 Appendix E (Normative) DC Filter Resistor Specifications 41 Reference 44

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. This document replaces GB/T 25308-2010 "DC filter for HVDC transmission system". Compared with GB/T 25308-2010, except Apart from structural adjustments and editorial changes, the main technical changes are as follows. ---Changed the "scope" and "normative references" (see Chapter 1 and Chapter 2, Chapter 1 and Chapter 2 of the.2010 edition); --- Changed the definition of "DC filter" (see 3.1, 3.1 of the.2010 edition), and deleted the terms "characteristic harmonics" and "non-characteristic harmonics" and "auxiliary circuit" (see 3.3, 3.4 and 3.6 of the.2010 edition), adding the terms "[DC] neutral bus capacitor" and "[DC Flow] smoothing reactor" (see 3.5 and 3.6); --- Changed the "normal conditions of use" in the provisions of the temperature and altitude of the installation and operation place (see 4.1.1 and 4.1.3, the.2010 edition 4.1.1 and 4.1.3), the regulations on pollution level and creepage distance (see 4.1.2), the regulations on "seismic intensity" and "wind speed" (see 4.1.4 and 4.1.5); ---Changed the provisions of "high relative humidity", "mold growth" and "corrosive atmosphere" in "special conditions of use" (see 4.2.1~4.2.3, 4.2.1~4.2.3 of the.2010 edition); delete the provisions of "earthquake area" (see 4.2.4 of the.2010 edition); --- Increased DC filter parameter design including "calculation of harmonic voltage generated by the converter" (see 5.1), DC filter The description of "parallel circuit resonant frequency fp" in the type and the content of the three-tuned filter (see 5.2); --- Change the harmonic components contained in the equivalent interference current from "all harmonics" to "1~50 times" (see 5.3.1.1, 5.3.1.2, 5.3.1 of the.2010 edition); the equivalent interference current calculation formula is changed to make it suitable for multi-terminal systems and the calculation involves "Weighting Factor" and "Coupling Factor" were changed to "Weighting Factor" and "Coupling Factor" respectively, and the relevant "Typical Communication Clearance" was changed. Line Coupling Factor" (see 5.3.1.2, 5.3.1 of the.2010 edition), added the regulations on the limit value of the equivalent interference current (see 5.3.1.2); ---Deleted the content of longitudinal induced voltage and noise weighting factor frequency curve in "DC filter performance" (see the.2010 edition 5.3.1); --- When calculating the steady-state value of the DC filter, the factors that should be included in determining the steady-state stress and noise calculation current (see 5.3.2.1); ---Change the letter symbols "k", "UbN" and "Un" in the voltage calculation formula between the terminals of the high-voltage side capacitor bank to "km" respectively "UbNH" and "UnCH" are clearly defined, and the regulations on the uneven factor of DC voltage distribution are changed (see 5.3.2.2.1,.2010 edition 6.1.1); ---Changed the calculation of the voltage between the neutral bus capacitor voltage and the voltage between other equipment terminals (see 5.3.2.2.1,.2010 edition 6.1.1); --- Change the letter symbol "Un" in the voltage calculation formula for determining the creepage distance between the terminals of the high-voltage side capacitor to "UnCH", which The letter symbol "Un" in the voltage calculation formula for the creepage distance between the terminals of other equipment is changed to "Un, other", and the terminal-to-ground creepage The letter symbol "Un" in the distance voltage calculation formula is changed to "Un, ground", and the interpretation is clearly defined (see 5.3.2.2.2,.2010 edition 5.3.2.1.2); ---Change the letter symbols "MCOV" and "Un" in the calculation formula of the maximum continuous operating voltage of the arrester to "UMCOV" and "Unarr" respectively And clarify the interpretation (see 5.3.3.3.2, 5.3.2.1.3 of the.2010 edition), increase the SCCOV of the maximum continuous operating voltage of the arrester Calculation method (see 5.3.3.3.2); ---Change the letters "In" and "Ithc" in the formula for calculating the rated current of capacitors/capacitor banks to "InC" and "IthC" respectively, and specify Correct interpretation (see 5.3.2.3 and 6.1.3, 5.3.2.2 and 6.1.2 of the.2010 edition); ---Change the letter symbols "In" and "Ithl" in the calculation formula of the rated current of the reactor to "InL" and "IthL" respectively, which are used to calculate the noise The letter symbol "In" in the current calculation formula is changed to "Ian", and the interpretation is clear (see 5.3.2.3, 5.3.2.2 of the.2010 edition), delete The factors that should be included in determining the steady state stress (see 5.3.2.2 of the.2010 edition); --- Changed the regulations on restarting after DC line failure (see 5.3.3.2, 5.3.3.1 of the.2010 edition); ---Change the number of restarts after the DC line fault and the restart voltage requirements to be determined by the buyer and the seller through negotiation (see 5.3.3.2, 5.3.3.1 of the.2010 edition); ---Change the letter symbol "Un" in the calculation formula of the arrester's continuous operating voltage to "Unarr" and clearly explain it (see 5.3.3.3.2, 5.3.3.2.1 of the.2010 edition); --- Change the letter symbol "MCOVrms" in the calculation formula of the reference voltage of the arrester to "UMCOV" and clearly explain it (see 5.3.3.3.3, 5.3.3.2.1 of the.2010 edition); ---Changed the regulations for calculating the rated voltage of the capacitor bank on the low-voltage side (see 6.1.2, 6.1.1 of the.2010 edition); --- Changed the "General Requirements" and "Rated Values" of filter reactors (see 6.2.1 and 6.2.2, 6.2.1 and.2010 edition 6.2.2); ---Changed the "General Requirements" and "Current Rating" of resistors (see 6.3.1 and 6.3.2, 6.3.1 and.2010 edition 6.3.2); ---Changed the provisions of current transformers, isolating switches, and grounding switches (see 6.5~6.7, 6.5~6.7 of the.2010 edition); ---Changed the provisions on the mechanical strength and creepage distance of the bus post insulators (see 7.2.1, 8.2.1 of the.2010 edition); --- Added "Seismic Requirements" in "Structure and Conductor Requirements" (see 7.4); --- Changed the provisions of the "General Rules" of the test (see 8.1, 7.1.1 and 7.1.2 of the.2010 edition), and the reference temperature corrected for the ambient air temperature The temperature was changed from 20°C to 25°C (see 8.1, 7.1.2 of the.2010 edition); ---Changed the provisions for capacitor, reactor and resistor tests in "equipment" (see 8.2~8.4, 7.2 of the.2010 edition); ---Changed the provisions of capacitor, reactor and resistor test in "field test" (see 8.4.1~8.4.3,.2010 edition 7.3.1~7.3.3); ---Changed the "General Rules" of filter tuning test (see 8.4.4.1, 7.3.4 of the.2010 edition); --- Increased the provisions of special tests for capacitors, reactors and resistors (see 8.5); ---Changed the contents of Appendix A, Appendix C~Appendix E (see Appendix A, Appendix C~Appendix E, Appendix A, Appendix C of the.2010 edition Appendix C~Appendix E). Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Standardization Technical Committee for Power Electronic Systems and Equipment (SAC/TC60). This document is drafted by. Xi'an Xidian Power System Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Xi'an High Voltage Electrical Appliances Research Institute Co., Ltd., Zhejiang University, China Electric Power Research Institute Co., Ltd., State Grid Anhui Electric Power Co., Ltd. Electric Power Research Research Institute, West Andro Electric Equipment Co., Ltd., Xi'an Zhongyang Electric Co., Ltd. The main drafters of this document. Cao Yang, Li Yan, Xu Fan, Huang Ying, Li Yuan, Zhang Wanrong, Xin Qingming, Zhang Zheren, Yang Xiaohui, Wang Weihua, Huajuntuan, Wang Yaohui, Zhang Xuebing, Feng Yu, Chen Zhong, Qiu Wei, Huang Chao. This document was first published in.2010, and this is the first revision. DC filter for HVDC transmission system

1 Scope

This document specifies the use conditions, parameter design requirements, equipment design requirements, test, structure and conductor requirements, logo etc. This document applies to DC filters installed in high-voltage direct current (HVDC) transmission systems with voltage levels of ±1100kV and below.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 311.1-2012 Insulation coordination Part 1.Definitions, principles and rules GB/T 1094.1-2013 Power Transformers Part 1.General Rules GB/T 1094.2-2013 Power transformers Part 2.Temperature rise of liquid-immersed transformers GB/T 1094.6-2011 Power Transformers Part 6.Reactors GB/T 1985 High-voltage AC isolating switch and grounding switch GB/T 13498-2017 Terminology for HVDC Transmission GB/T 20840.1 Transformers Part 1.General technical requirements GB/T 20840.2 Transformers Part 2.Supplementary Technical Requirements for Current Transformers GB/T 20993-2012 DC filter capacitors and neutral bus impact capacitors for HVDC transmission systems GB/T 20994-2007 Shunt capacitors and AC filter capacitors for HVDC transmission systems GB/T 25091 High Voltage DC Isolating Switches and Earthing Switches GB/T 26216.1 DC current measuring device for HVDC transmission system Part 1.Electronic DC current measuring device GB/T 26216.2 DC current measuring device for HVDC transmission system Part 2.Electromagnetic DC current measuring device GB/T 26218.4-2019 Selection and dimensioning of high voltage insulators for use under polluted conditions Part 4.For DC systems insulator GB/T 28543-2021 Power capacitor noise measurement method GB/T 30547-2014 Resistors for filters in HVDC transmission systems GB/T 50260 Code for Seismic Design of Power Facilities

3 Terms and Definitions

The following terms and definitions defined in GB/T 13498-2017 apply to this document. 3.1 DC [harmonic] filter DC (harmonic) filter Cooperate with DC smoothing reactor and DC impact capacitor (if any), the main function is to reduce the filter for circuit current or voltage fluctuations. [Source. GB/T 13498-2017, 9.4] ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 25308-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 25308-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 7 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 25308-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 25308-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 25308-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 25308-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.