1 Scope
This standard specifies the rated value, design and structure, tests, etc., of high-voltage direct current by-pass switches.
This standard is applicable to indoors/outdoors by-pass switches operating in HVDC transmission systems with voltage levels of ±800 kV and below.
This standard is also applicable to the operating mechanism and auxiliary equipment of by-pass switches.
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 1984-2003 High-voltage alternating-current circuit-breakers (IEC 62271-100:2001, MOD)
GB/T 2900.20-1994 Electrotechnical terminology - High-voltage switchgear (IEC 60050 (441), IEC 60056, etc., NEQ)
GB 3906-2006 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV (IEC 62271-200:2003, MOD)
GB/T 5273-1985 Terminals for transformers, high-voltage apparatus and bushings (IEC 60518:1975, NEQ)
GB/T 11022-1999 Common specifications for high-voltage switchgear and controlgear standards (IEC 60694:1996, EQV)
GB/T 12022-2006 Sulphur hexafluoride for industrial use (IEC 60376:1971, IEC 60376A:1973, IEC 60376B:1974, MOD)
GB/T 13498-2007 Terminology for high-voltage direct current (HVDC) transmission (IEC 60633:1998, IDT)
GB/T 13540 Seismic qualification for high-voltage switchgear and controlgear (GB/T 13540-2009, IEC 62271-2:2003, MOD)
GB/T 16927.1-1997 High-voltage test techniques - Part 1: General test requirements (IEC 60060-1:1989, EQV)
GB/T 20635-2006 Special environment condition - Technical requirements of high-voltage apparatuses for plateau
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 1984-2003, GB/T 2900.20-1994, GB/T 11022-1999 and the following apply.
3.1
switchgear and controlgear
[GB/T 11022-1999, definition 3.1.1]
3.2
high-voltage direct current (HVDC) by-pass switch
mechanical power switchgear bridged between one or more converter bridge DC terminals to short-circuit the converter bridge and to transfer the current to the converter valve once such bridge is quitting running and put into operation respectively
See BPS1~BPS8 in Figure 1 for the positions of HVDC by-pass switches in a DC system.
Note: It is revised from definition 6.20 in GB/T 13498-2007.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Normal and special service conditions
5 Rated values
6 Design and structure
7 Type tests
8 Routine tests
9 Field test
10 Data provided together with the inquiry sheet, bidding documents and order
11 Rules for transportation, storage, installation, operation and maintenance
12 Safety
Annex A (Informative) Overload current of DC system
Annex B (Informative) Guidelines for the selection of by-pass switch operation
