GB/T 33348-2024Voltage sourced converter valves for high-voltage direct current power transmission - Electrical testing (English PDF)

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 33348-2016 "Electrical test of voltage source converter valves for high voltage direct current transmission" and GB/T 33348-Compared with:2016, in addition to structural adjustments and editorial changes, the main technical changes are as follows:

--- Changed the scope (see Chapter 1, Chapter 1 of the:2016 edition);

--- Changed the definition of the term "dynamic brake valve" (see 3.4:12, 3:4:12 of the:2016 edition);

--- Deleted the term "valve base electronic equipment" (see 3.5:5 of the:2016 edition);

--- When expressing the minimum number of valve stages for type testing, "type test" is subdivided into "operation type test" and "insulation type test":

"Testing", and corresponding provisions are given [see 4.1:2b), 4:1:2b of the:2016 edition)];

--- Deleted the note on "test frequency" (see 4.1:5, 4:1:5 of the:2016 edition);

--- Deleted the provisions of the test product: "The arrester should be proportional to the number of series-connected valves under test and provide at least the same lightning protection as the actual application "For valves with valve arresters, proportionally sized valve arresters are required" is included" (see 6.2, 6:2 of the:2016 edition);

--- Added "The test current should include harmonic currents and other currents flowing through the valve" (see 6.4);

--- Added "maximum transient overvoltage continuous operation test" (see 6.7);

--- Changed the value of the test safety factor "k3" in the DC voltage test of the valve bracket (see 7.3:1, 7:3:1 of the:2016 edition);

--- Changed the calculation formula and description of the valve bracket AC voltage test (see 7.3:2, 7:3:2 of the:2016 edition);

--- Added "steep wavefront impact test of valve bracket" (see 7.3:5);

--- Changed the value of the test safety factor "k5" and the calculation formula and description of the AC voltage test of the multiple valve unit (see 8.3:1 and 8:3:2, 8:3:1 and 8:3:2 of the:2016 edition);

--- Added "test method" (see 9.4);

--- Deleted "Current is not applied test safety factor" (see 11.3 of the:2016 edition);

--- Added the provisions for test equivalent waveform and recovery voltage (see 11.3);

--- Added "If the valve impact test is implemented in accordance with 9:4, the test results shall not be used as the basis for the valve's resistance to electromagnetic interference:" (see 12.1);

--- Added a chapter on "Special Tests" (see Chapter 13);

--- Added pressure test parameter requirements (see 14.5:8);

--- Added "Dynamic brake valve test" (see Chapter 16):

This document is modified to adopt IEC 62501:2017 "Electrical tests on valves of voltage source converters for high voltage direct current transmission":

This document has many technical differences compared to IEC 62501:2017:

The single line (|) indicates these technical differences and their reasons as follows:

--- The normative reference GB/T 16927.1 replaces IEC 60060-1, which may affect 7:3:4 "Lightning impulse test of valve bracket the selection of voltage waveforms in 8:3:4 "Lightning impulse test for multiple valve units" and 9:3:4 "Lightning impulse test for valves" may affect this affects the selection of test procedures and instruments in 13:2 "Valve AC-DC voltage wet test";

--- The normative reference GB/T 16927.2 replaces IEC 60060-2, which may affect Chapter 15 "Table of type test results Calculation of uncertainty of high voltage measurement system in "

--- The normative reference GB/T 16927.3 replaces IEC 60060-3, which may affect Chapter 7 "Insulation test of valve bracket" Test equipment parameters in Chapter 8 "Insulation test for multiple valve units" and Chapter 9 "Insulation test between terminals" Selection;

--- The use of the current measurement specified in GB/T 16927.4, which is a normative reference, may affect the "Type Test Results" in Chapter 15:

Calculation of uncertainty of large current measurement system in "expression";

--- Added "maximum transient overvoltage continuous operation test" (see Table 3 and 6:7);

--- Added "The atmospheric correction for the test level shall be as specified in 4:2:" (see 7.3:3 and 7:3:4);

--- Added "steep wavefront impact test of valve bracket" (see Table 3 and 7:3:5);

--- Added "Special Tests" (see Chapter 13), and the original chapter numbers of Chapters 13 to 15 are postponed:

The following editorial changes were made to this document:

--- Move the suspended paragraphs under the title of Article 7:3 to 7:3:1, 7:3:2, 7:3:3, and 7:3:4 respectively, as 7:3:1, 7:3:2, 7:3:3, and 7:3:4 the first paragraph (see 7.3:1, 7:3:2, 7:3:3 and 7:3:4);

--- Move the suspended paragraph under the chapter title of Chapter 8 to 8:1 as the first paragraph in 8:1 (see 8.1);

---Change the text symbol "SIPLm" of the multiple valve unit operation impulse protection level to "USIPLm", multiple valve unit lightning impulse the text symbol of the protection level "LIPLm" is changed to "ULIPLm", and the text symbol of the valve arrester operating impulse protection level "SIPLv" is changed to "USIPLV", and the text symbol of the lightning impulse protection level of the valve arrester "LIPLv" is changed to "ULIPLV":

Comply with the writing rules for quantity symbols (see 8.3:3, 8:3:4, 9:3:3 and 9:3:4);

--- Translate "the last minute" of AC partial discharge measurement in 3h valve AC-DC voltage test into "the last minute" 1min"(see 9.3:1);

---Correct "Uac1" and "Udc1" in the explanation of variables in the expression of 10s valve AC-DC voltage test Utv1 to "Utac1" respectively and "Utdc1" (see 9.3:1);

--- Change the suspended paragraph under the chapter title of Chapter 14 to "14:1 Overview" and the numbering of the subsequent clauses shall be continued (see Chapter 14):

1 Scope

This document specifies electrical type tests, product tests and special requirements for dynamic brake valves for high voltage direct current (HVDC) overvoltage limitation applications:

Special test:

This document applies to self-commutated converter valves for three-phase bridge voltage source converters (VSC) in HVDC transmission systems or back-to-back systems:

This document is limited to electrical type tests, product tests and special tests:

The tests specified in this document are based on air-insulated valves: For other types of valves, the test requirements and acceptance criteria are determined by the purchaser and the seller:

The parties agreed:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document:

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document:

GB/T 16927.1 High Voltage Test Technology Part 1: General Definitions and Test Requirements (GB/T 16927.1-2011, IEC 60060-1:2010,MOD) GB/T 16927.2 High Voltage Test Technology Part 2: Measurement System (GB/T 16927.2-2013, IEC 60060-2:

2010,MOD)

GB/T 16927.3 High Voltage Test Technology Part 3: Definition and Requirements for Field Test (GB/T 16927.3-2010, IEC 60060-3:2006, MOD) GB/T 16927.4 High voltage and high current test technology Part 4: Definition and requirements of test current and measurement system (GB/T 16927.4-2014, IEC 62475:2010, MOD) GB/T 20990.1-2020 High voltage direct current transmission thyristor valves Part 1: Electrical tests (IEC 60700-1:2015, MOD) Note: There is no technical difference between the referenced content of GB/T 20990.1-2020 and the referenced content of IEC 60700-1:2015:

GB/T 34118 Terminology for voltage source converters for high voltage direct current systems (GB/T 34118-2017, IEC 62747:2014, IDT) IEC 60071 (all parts) Insulation coordination Note: GB/T 311.1-2012 Insulation coordination Part 1: Definitions, principles and rules (IEC 60071-1:2006, MOD);

GB/T 311.2-2013 Insulation coordination Part 2: Guidelines for use (IEC 60071-2:1996, MOD);

GB/T 311.3-2017 Insulation coordination Part 3: Insulation coordination procedure for high-voltage DC converter stations (IEC 60071-5:2014, MOD);

GB/T 311.4-2010 Insulation coordination Part 4: Calculation guide for insulation coordination and simulation of power networks (IEC 60071-4:2004, MOD):

urements

Note: GB/T 7354-2018 High voltage test technology Partial discharge measurement (IEC 60270:2000, MOD) Note: GB/T 27025-2019 General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:2017, IDT)