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GB/T 20990.1-2020 English PDF

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US$739.00 · In stock
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GB/T 20990.1-2020: Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing
Status: Valid

GB/T 20990.1: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20990.1-2020	739	Add to Cart	6 days	Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing	Valid
GB/T 20990.1-2007	RFQ	ASK	4 days	Thyristor valves for high voltage direct current (HVDC) power transmission -- Part 1: Electrical testing	Obsolete

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Basic data

Standard ID: GB/T 20990.1-2020 (GB/T20990.1-2020)
Description (Translated English): Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K46
Classification of International Standard: 29.200
Word Count Estimation: 40,471
Date of Issue: 2020-12-14
Date of Implementation: 2021-07-01
Older Standard (superseded by this standard): GB/T 28563-2012; GB/T 20990.1-2007
Quoted Standard: GB/T 311.1; GB/T 7354; GB/T 11032; GB/T 13498-2017; GB/T 16927.1; GB/T 16927.2; GB/T 16927.3; GB/T 16927.4; GB/T 20989-2017; GB/T 27025
Adopted Standard: IEC 60700-1-2015, MOD
Regulation (derived from): National Standard Announcement No. 28 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the items, requirements and criteria for valve type tests and product tests. This standard is applicable to the thyristor valve in the power grid commutating converter used for high-voltage direct current transmission or as part of the back-to-back system, and metal oxide arresters are directly connected at both ends of the valve. This standard is limited to electrical type tests and product tests. The tests specified in this standard are based on air-insulated valves. Other types of valves can also refer to the requirements and acceptance criteria of this standard.

GB/T 20990.1-2020: Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testing

---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.
(HVDC Thyristor Valve Part 1: Electrical Test) ICS 29:200 K46 National Standards of People's Republic of China Replace GB/T 20990:1-2007, GB/T 28563-2012 HVDC thyristor valve Part 1: Electrical test (IEC 60700-1:2015, MOD) 2020-12-14 release 2021-07-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 3:1 Terminology for insulation coordination 1 3:2 Terminology of valve structure 2 3:3 Type test terms 2 3:4 Product test term 3 4 General requirements 3 4:1 Type test guidelines 3 4:2 Atmospheric correction 4 4:3 Redundant processing 4 4:4 Criteria for successful type test 4 5 Type test list 5 6 Valve support insulation test 7 6:1 Test purpose 7 6:2 Sample 7 6:3 Test requirements 7 7 Multiple valve unit (MVU) insulation test 8 7:1 Test purpose 8 7:2 Test sample 8 7:3 Test requirements 9 8 Insulation test between valve terminals 11 8:1 Test purpose 11 8:2 Sample 11 8:3 Test requirements 11 8:4 Valve acyclic trigger test 15 9 Periodic trigger and shutdown test 16 9:1 Test purpose 16 9:2 Sample 16 9:3 Test requirements 16 10 Transient forward voltage test during recovery period 20 10:1 Test purpose 20 10:2 Sample 20 10:3 Test requirements 20 11 Valve fault current test 21 11:1 Test purpose 21 11:2 Sample 21 11:3 Test requirements 22 12 Valve anti-electromagnetic interference test 23 12:1 Test purpose 23 12:2 Sample 24 12:3 Test requirements 24 13 Special function test and fault tolerance test 24 13:1 Test purpose 24 13:2 Sample 25 13:3 Test requirements 25 14 Product test 25 14:1 Overview 25 14:2 Test purpose 25 14:3 Sample 26 14:4 Test requirements 26 14:5 Routine testing --- minimum requirements 26 15 Method of determining loss 27 16 Description of type test results 27 Appendix A (Normative Appendix) Test safety factor 28 Appendix B (Normative Appendix) Partial Discharge Measurement 32

Foreword

GB/T 20990 "HVDC Thyristor Valves" plans to publish the following parts: ---Part 1: Electrical test; ---Part 2: Terminology; ---Part 3: Basic ratings (limits) and characteristics: This part is Part 1 of GB/T 20990: This section was drafted in accordance with the rules given in GB/T 1:1-2009: This part replaces GB/T 20990:1-2007 "HVDC Thyristor Valve Part 1: Electrical Test" and GB/T 28563-2012 "Electrical Test of Thyristor Valves for ±800kV UHV DC Transmission": Compared with GB/T 20990:1-2007, the main technical changes in this part are as follows: ---Modified the normative reference documents (see Chapter 2, Chapter 2 of the:2007 edition); --- Deleted the terms "internal and external insulation", "valve support", "valve structure" and "redundant thyristor level" (see Chapter 3 of the:2007 edition); --- Amend "dielectric test" to "insulation test" (see 3:3:1, 4:3:1, Chapter 6, Chapter 7, Chapter 8,:2007 edition 3:3:1, 4:3:1, Chapter 6, Chapter 7, Chapter 8); --- Modify the "test object" to "test product" (see 4:1:2, 6:2, 8:2, 8:4:2, 9:2, 10:2, 11:2, 12:2, 13:2, 14:3,:2007 Version 4:1:2, 6:2, 8:2, 8:4:2, 9:2, 10:2, 11:2, 12:2, 13:2, 14:2); ---The content of the item "pressure" in the "atmospheric correction" has been revised (see 4:2, 4:2 of the:2007 edition); --- Change the suspension paragraphs in Chapters 4:4, 9:3:1, 9:3:3, 12:3, and Chapter 14 of the:2007 edition to 4:4:1, 9:3:2:1, 9:3:4:1, respectively 12:3:1, 14:1 "General", the number of the following clauses is extended (see 4:4, 9:3:2, 9:3:4, 12:3, Chapter 14,:2007 edition 4:4, 9:3:1, 9:3:3, 12:3, Chapter 14); ---Modified the number of faulty thyristor levels allowed during the type test (see Table 1, Table 1 of the:2007 edition); ---Modified the type test item table (see Table 2, Table 2 of the:2007 edition); --- Deleted the "Valve support AC current test" in "Before the test, the valve support should be short-circuited to ground for at least 2h" requirements (see:2007 Version 6:3:2); ---Added a "steep wave front impact test of valve bracket" (see 6:3:6); ---Modified the AC voltage test requirements for multiple valve units (see 7:3:2, 7:3:2 of the:2007 edition); ---Added "Multiple Valve (MVU) Steep Wave Front Impact Test" (see 7:3:5); ---Added a "valve wet DC voltage test" (see 8:3:2); ---Modified the valve AC voltage test requirements (see 8:3:3, 8:3:2 of the:2007 edition); --- Modify "VDSM---rated thyristor forward surge voltage non-repetitive peak value" to "VDSM---rated thyristor off-state not Repetitive peak voltage" (see 8:3:4, 8:3:3 of the:2007 edition); ---Added "valve wet operation impact test" (see 8:3:6); ---Modified the expression of withstand voltage in "valve steep wave front impact test" (see 8:3:8, 8:3:6 in:2007 edition); --- Modify "Uv0max---the highest steady state no-load phase-to-phase voltage on the transformer valve side" to "Uv0max---the highest steady state no-load voltage on the transformer valve side" Load line voltage" (see 9:3:2:1, 9:3:1 in:2007 edition); --- Change "αmax" in the relevant expressions of "Maximum Continuous Trigger Voltage Test", "Maximum Continuous Recovery Voltage Test" and "Hot Running Test" "Μmax" and "γmax" are respectively modified to "α", "μ" and "γ" (see 9:3:2:2~9:3:2:4, 9:3:1:1~9:3:1:3 of the:2007 edition); ---Modified the expression of the recovery step voltage in the "Maximum Recovery Voltage Test" (see 9:3:2:3, 9:3:1:2 of the:2007 edition); ---Modified the expression of the recovery step voltage in the "Minimum Turn-Off Angle Test" (see 9:3:4:3, 9:3:3:2 of the:2007 edition); --- Modify "Uv0max---the highest steady-state no-load phase-to-phase voltage on the transformer valve side" to "Uv0max---the highest stable voltage on the transformer valve side" State no-load line voltage", modify the "delay angle" to "trigger angle" (see 9:3:3,:2007 edition 9:3:2); ---Respectively modify "nt" and "nv" in the voltage expression of "Minimum AC Voltage Test" to "Ntut", "Nt", "Uv0min---Transformer The lowest steady-state no-load phase-to-phase voltage on the valve side” is revised to “Uv0min---the lowest steady-state no-load line voltage on the valve side of the transformer” (see 9:3:4: 1, 9:3:3 of the:2007 edition); --- Modify the "αmin" in the relevant expressions of the "minimum firing angle test" to "α" (see 9:3:4:2, 9:3:3:1 of the:2007 edition); ---Modified the minimum shut-off angle test requirements (see 9:3:4:3, 9:3:3:2 of the:2007 edition); ---Modified the requirements of transient undervoltage test (see 9:3:5, 9:3:4 in:2007 edition); ---Modified the requirements for intermittent DC current test (see 9:3:6, 9:3:5 in:2007 edition); --- Added "protective trigger continuous operation test" (see 9:3:7); ---Added "Valve loss verification" (see 9:3:8); ---Modified the test purpose of the transient forward voltage test during the recovery period (see 10:1, 10:1 of the:2007 edition); ---Modified the transient forward voltage test requirements during the recovery period (see 10:3, 10:3 of the:2007 edition); ---Modified the test purpose of the valve fault current test (see 11:1, 11:1 in the:2007 edition); ---Modified the single-wave fault current test requirements plus forward voltage (see 11:3:2, 11:3:1 of the:2007 edition); ---Modified the test purpose of the valve anti-electromagnetic interference test (see 12:1, 12:1 of the:2007 edition); ---Modified the test purpose of special function test and fault tolerance test (see 13:1,:2007 edition of 13:1); ---Modified the value of the operating test safety factor (see A:3,:2007 edition of A:5); ---Modified the partial discharge measurement requirements (see B:1,:2007 edition of B:1); --- Deleted Appendix C (see Appendix C of the:2007 edition): Compared with GB/T 28563-2012, the main technical changes in this part are as follows: --- The terms "internal insulation and external insulation", "valve support", "valve structure", "redundant thyristor level", "thyristor level", "valve assembly", and "multiple "Valve unit" "High (pressure) end 12-pulse converter bridge" and "Low (pressure) end 12-pulse converter bridge" (see Chapter 3 of the:2012 edition); ---The content of the item "pressure" in the "atmospheric correction" has been revised (see 4:2, 4:2 of the:2012 edition); ---Modified the number of thyristor levels allowed to be damaged in the type test (see Table 1, Table 1 of the:2012 edition); --- Modified the "test product" in "Multiple Valve Unit (MVU) Insulation Test" (see 7:2,:2012 edition of 7:2); --- Modify "SIPLm" in the voltage expression of "Multiple Valve Unit Operation Impact Test" to "USIPLm" (see 7:3:3,:2012 edition 7:3:3); --- Modify "LIPLm" in the voltage expression of "Multiple Valve Unit Lightning Impulse Test" to "ULIPLm" (see 7:3:4,:2012 edition 7:3:4); ---Modified the valve AC voltage test requirements (see 8:3:3, 8:3:3 of the:2012 edition); --- Modify "VDSM---rated thyristor forward surge voltage non-repetitive peak value" to "VDSM---rated thyristor off-state not Repetitive peak voltage" (see 8:3:4, 8:3:4 of the:2012 edition); --- Deleted item f) in "Valve Impact Test" (see 8:3:4 in:2012 edition); ---Modified the "test product" in "periodical trigger and shutdown test" (see 9:2,:2012 edition of 9:2); ---Modified the "general rules" for periodic triggering and shutdown tests (see 9:3:1, 9:3:1 of the:2012 edition); --- Modify the "delay angle" to "trigger angle" (see 9:3:2:2,:2012 edition of 9:3:2:2); ---Modified the requirements for the intermittent DC current test (see 9:3:6, 9:3:6 of the:2012 edition); ---Modified the purpose of the transient forward voltage test during the recovery period (see 10:1, 10:1 in the:2012 edition); ---The purpose of the valve fault current test is modified (see 11:1, 11:1 in the:2012 edition); ---Modified the "general requirements" of "valve fault current test" (see 11:3:1,:2012 edition 11:3:1); --- In the "Valve Electromagnetic Compatibility Test", the end of paragraph 2 of "Test Purpose" is added "This is because, when the converter station is in normal operation, this Conditions equivalent to these tests may appear, and these conditions will not cause the converter station to trip: "(See 12:1); ---Modified the "Overview" of "Product Testing" (see 14:1, 14:1 of the:2012 edition); --- The title of the article "Purpose of Routine Test" is amended to "Routine Test-Minimum Requirements" (see 14:5,:2012 edition of 14:5); --- Amend "Appendix A" to "Appendix B" (see Appendix B, Appendix A of the:2012 edition); --- Amend "Appendix B" to "Appendix A" (see Appendix A, Appendix B of the:2012 edition): This part uses the redrafting method to modify and adopt IEC 60700-1:2015 "HVDC Thyristor Valve Part 1: Electrical Test Experience: Compared with IEC 60700-1:2015, this part adds 6:3:6, 7:3:5, 8:3:2, 8:3:6, 9:3:7, 9:3:8 in structure, and changes the original 8:3:2~8:3:4, 8:3:5, 8:3:6 are adjusted to 8:3:3~8:3:5, 8:3:7, 8:3:8 respectively: Technical differences between this part and IEC 60700-1:2015 (the clauses involved in these differences have been The vertical single line (|) is marked) and the reasons are as follows: ---Regarding normative reference documents, this part has made adjustments with technical differences to adapt to my country's technical conditions and adjustments It is concentratedly reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows: ● Replace IEC 60071-1 with GB/T 311:1 which is modified to adopt international standards; ● Replace IEC 60270 with GB/T 7354 which is modified to adopt international standards; ● Replace IEC 60099-4 with GB/T 11032 modified to adopt international standards; ● Replace IEC 60060 (all parts) with GB/T 16927 (all parts) which is modified to adopt international standards; ● Replace IEC 60060-1 with GB/T 16927:1 which is modified to adopt international standards; ● Replace IEC 61803 with GB/T 20989-2017 which is equivalent to adopting international standards; ● Replace IEC 17025 with GB/T 27025 which is equivalent to adopting international standards; ● Added reference to GB/T 13498-2017; --- Deleted the terms "internal and external insulation", "valve support", "valve structure", "redundant thyristor level", "thyristor level", "valve assembly" and "multiple Heavy valve unit" (see 3:1 and 3:2 of IEC 60700-1:2015); --- Deleted the "Note" in "Type Test Terms" and "Product Test Terms" (see IEC 60700-1:2015 3:3 and 3:4); --- Deleted part of the content in the "Summary" of "Type Test Success Criterion" (see 4:4:1 of IEC 60700-1:2015); ---Added footnotes to Table 2 to distinguish between optional items (see Table 2); --- Modify "50% of the highest test voltage" to "50% of the 1min test voltage" (see 6:3:2, 6:3:3, 7:3:1 and 8:3:1, IEC 60700-1:2015 6:3:2, 6:3:3, 7:3:1 and 8:3:1); --- Modify "50% of the highest test voltage" to "50% of the 15s test voltage" (see 8:3:3, IEC 60700-1:2015 8:3:2); ---Correct the valve DC voltage test voltage expression "Utdv=±Udn±k7" to "Utdv=±Udn×k7" (see 8:3:1, IEC 60700-1:2015 8:3:1); --- Correct "VDSM---Thyristor non-repetitive forward surge peak voltage rating" to "VDSM---Thyristor off-state non-repetitive peak Value voltage rating" (see 8:3:4, 8:3:4 of IEC 60700-1:2015); --- Added requirements for coolant: "The coolant should reflect the actual operating conditions: Especially the flow rate and temperature should be set as the test station The most unfavorable value considered: "(See 9:2); This section has made the following editorial changes: --- Correct the "see 9:3:4:1" in the "intermittent DC current test" column item b) to "see 9:3:4:2" (see 9:3:6, IEC 60700-1: 9:3:6 in:2015): ---Incorporated the content of IEC 60700-1:2015/Cor1:2017 errata: This part was proposed by China Electrical Equipment Industry Association: This part is under the jurisdiction of the National Power Electronic System and Equipment Standardization Technical Committee (SAC/TC60): Drafting organizations of this section: China Electric Power Research Institute Co:, Ltd:, Xi'an High Voltage Apparatus Research Institute Co:, Ltd:, Xi'an Xidian Power Power Systems Co:, Ltd:, State Grid Sichuan Electric Power Research Institute, Global Energy Internet Research Institute Co:, Ltd:, State Grid Shanghai Electric Power Research Institute, Xi'an Power Electronics Technology Research Institute, Nanjing Nanrui Relay Electric Co:, Ltd:, China Southern Power Grid Research Institute Co:, Ltd:, China Southern Power Grid Co:, Ltd: EHV Transmission Company, Xu Ji Electric Co:, Ltd:, State Grid Economic Technology Research Institute Co:, Ltd:, State Grid Anhui Electric Power Co:, Ltd: Electric Power Research Institute: The main drafters of this section: Zhang Jinhua, Zhou Huigao, Wei Hongqi, Ma Weimin, Yang Xiaohui, Ma Yuanshe, Liu Longchen, Zhou Jianhui, Sun Jian, Gao Kai, Li Xiaopeng, Dong Tianhua, Tang Jinkun, Hu Zhilong, Liang Jiahao, Fu Chuang, Lin Zhiguang, Li Qiang, Sun Mei, Xu Zimeng, Chen Zhong, Wang Mingxin, Lou Yantao, Li Lingfei, Fan Caiyun, Feng Yu, Hou Ting, Chang Zhongting, Huang Yongrui, Zhang Teng, Li Yuan, Wei Wei, Wang Gaoyong: The previous versions of the standards replaced by this part are as follows: ---GB/T 20990:1-2007; ---GB/T 28563-2012: HVDC thyristor valve Part 1: Electrical test

1 Scope

This part of GB/T 20990 specifies the items, requirements and criteria for valve type tests and product tests: This part is applicable to thyristor valves used in HVDC transmission or as part of a back-to-back system commutated converter in the power grid: Metal oxide arresters are directly connected to both ends of the valve: This section is limited to electrical type tests and product tests: The tests specified in this section are based on air-insulated valves: Other types of valves can also refer to the requirements and acceptance criteria of this section:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article Pieces: For undated references, the latest version (including all amendments) applies to this document: GB/T 311:1 Insulation coordination Part 1: Definitions, principles and rules (GB/T 311:1-2012, IEC 60071-1:2006, MOD) GB/T 7354 High Voltage Test Technology Partial Discharge Measurement (GB/T 7354-2018, IEC 60270:2000, MOD) GB/T 11032 AC gapless metal oxide arrester (GB/T 11032-2010, IEC 60099-4::2006, MOD) GB/T 13498-2017 Terminology for HVDC Transmission (IEC 60633:2015, MOD) GB/T 16927 (all parts) High voltage test technology (IEC 60060) GB/T 16927:1 High Voltage Test Technology Part 1: General Definition and Test Requirements (GB/T 16927:1-2011, IEC 60060-1:2010, MOD) GB/T 20989-2017 Determination of losses in HVDC converter stations (IEC 61803:2011, IDT) GB/T 27025 General requirements for the competence of testing and calibration laboratories (GB/T 27025-2019, ISO /IEC 17025:2017, IDT)

3 Terms and definitions

The following terms and definitions defined in GB/T 13498-2017 apply to this document: 3:1 Terminology for insulation coordination 3:1:1 Test withstand voltage Standard waveform test voltage: An undamaged, complete new valve under specified conditions, with specified number of applications or specified duration When subjected to the test voltage, no breakdown discharge occurs, and all other acceptance criteria for the specific test requirements are met: 3:1:2 Steep frontimpulse The peak time is shorter than the standard lightning impulse, but not shorter than the extremely fast wavefront voltage defined in GB/T 311:1: Shock: ......

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Question 1: How long will the true-PDF of GB/T 20990.1-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 20990.1-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 20990.1-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 20990.1-2020_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 20990.1-2020?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20990.1-2020 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.