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GB/T 36498-2018Guidelines for insulation co-ordination of flexible DC converter station (English PDF)

柔性直流换流站绝缘配合导则

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 17, 2018

Implementation date

April 1, 2019

Scope

GB/T 36498-2018 is the English-translated version of 柔性直流换流站绝缘配合导则.

GB/T 36498-2018 is a guide to insulation co-ordination for flexible DC converter stations that have no standard insulation levels.

It covers the typical arrester layout of a flexible DC converter station and its graphical symbols, the insulation co-ordination principles, operating voltages, arrester characteristics and stresses, the design procedure, air gaps in the station and creepage distances.

Informative annexes work through examples for the ±320 kV Xiamen symmetric bipolar station, a ±420 kV symmetric monopole station and the ±500 kV Zhangbei multi-terminal symmetric bipolar station.

It applies only to the flexible DC converter station part of a power system, not to industrial converter equipment or conventional HVDC converter stations, and deals with insulation co-ordination rather than personal safety.

It builds on GB/T 311.1-2012, GB/T 311.3-2017 and IEC 60099-9, was issued on 17 September 2018 and has applied since 1 April 2019.

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Document preview — GB/T 36498-2018

National Standard of the People's Republic of China

ICS: 29.240.01
Classification: K 40

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 symbols and abbreviations
5 Typical flexible DC converter station arrester layout and corresponding graphical symbol
6 Insulation coordination principle
7 operating voltage
8 Characteristics and stress of the arrester
9 Insulation coordination design procedure
10 converter station air gap
11 creepage distance

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard gives guidelines for the insulation coordination of flexible DC converter stations without standard insulation levels.

This standard applies only to the flexible DC converter station part of the power system.

This standard does not apply to industrial converter equipment and conventional DC transmission engineering converter stations.

The given principles and rules apply only to the purpose of insulation coordination and do not involve personal safety requirements.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 311.1-2012 Insulation coordination Part 1. Definitions, principles and rules

GB/T 311.2-2013 Insulation coordination Part 2. Guidelines for use

GB/T 311.3-2017 Insulation coordination Part 3. Insulation coordination procedures for HVDC converter stations

GB/T 2900.8-2009 Electrotechnical terminology insulator

GB/T 11032-2010 AC gapless metal oxide arrester

GB/T 13498-2017 HVDC transmission terminology

GB/T 16927.1-2011 High voltage test techniques - Part 1. General definitions and test requirements

Guide for GB/T 22389 high-voltage DC converter station without gap metal oxide arrester

GB/T 50064-2014 AC electrical equipment overvoltage protection and insulation coordination design specifications

Lightning arresters for IEC 60099-9 Part 9. Gap-free metal oxide surge arresters for high-voltage direct current (HVDC) converter stations (Surge arresters-Part 9. Metal-oxidesurgearresterswithoutgapsforHVDCconverterstations)

3 Terms and definitions

GB/T 311.1-2012, GB/T 311.3-2017, GB/T 22389, GB/T 2900.8-2009, GB/T 11032-2010, The following terms and definitions defined in GB/T 13498-2017 and IEC 60099-9 apply to this document. For ease of use, the following repetitions Some terms and definitions in GB/T 311.1-2012, GB/T 2900.8-2009 and GB/T 11032-2010 are listed.

3.1 Insulation co-ordination

After considering the overvoltage protection measures used, determine the possible operating voltage on the equipment, and depending on the insulation characteristics of the equipment and possible effects The factors of insulation properties determine the insulation strength of the equipment from the aspects of safe operation and technical economic rationality. [GB/T 311.1-2012, definition 4.1]

3.2 Nominal DC voltage

The average value of the DC voltage required to transmit the nominal power at nominal current.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 27 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 311.1-2012 · IEC 60099-9

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