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GB/T 311.2-2013: Insulation co-ordination -- Part 2: Application guide
Status: Valid GB/T 311.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 311.2-2013 | English | 1979 |
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Insulation co-ordination -- Part 2: Application guide
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GB/T 311.2-2013
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| GB/T 311.2-2002 | English | RFQ |
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11 days [Need to translate]
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Insulation coordination -- Part 2: insulation of high voltage transmission and distribution equipment used in conjunction with the guidance
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GB/T 311.2-2002
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| GB/T 311.2-1983 | English | RFQ |
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High voltage test techniques--Part 1: General test condition and requirements
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GB/T 311.2-1983
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PDF similar to GB/T 311.2-2013
Basic data | Standard ID | GB/T 311.2-2013 (GB/T311.2-2013) | | Description (Translated English) | Insulation co-ordination -- Part 2: Application guide | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K40 | | Classification of International Standard | 29.080.30 | | Word Count Estimation | 90,940 | | Older Standard (superseded by this standard) | GB/T 311.2-2002 | | Quoted Standard | GB 311.1-2012; GB/T 772; GB/T 7327; GB 11032; GB/T 16927.1-2011; GB/T 26218.1; GB/T 28182 | | Adopted Standard | IEC 60071-2-1996, MOD | | Regulation (derived from) | National Standards Bulletin 2013 No. 2 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard applies to a nominal voltage above 1kV three-phase AC system, given or recommended values ??generally apply only to these systems. However, the provision of the basic principles of the two -phase and single-phase power system is also suitabl | GB/T 311.2-2013: Insulation co-ordination -- Part 2: Application guide---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.
Insulation co-ordination Part 2. Application guide
ICS 29.080.30
K40
National Standards of People's Republic of China
Replacing GB/T 311.2-2002
Insulation coordination - Part 2. Guide to the use
(IEC 60071-2.1996, MOD)
Issued on. 2013-02-07
2013-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅴ
1 Scope 1
2 Normative references 1
3 Symbols and Definitions 2
4 Run a representative role voltage 5
4.1 Origin and classification applied voltage 5
4.2 Characteristics of the overvoltage protection device 5
4.2.1 General Description 5
4.2.2 gapless metal oxide surge arresters 5
4.2.3 series gap arrester 6
4.2.4 spark gap 6
4.3 Representative and overvoltage 6
4.3.1 Length (frequency) voltage 6
4.3.2 temporary overvoltage 6
4.3.3 Slow wave front overvoltage 9
4.3.4 fast overvoltage wave front 13
Before 4.3.5 Express overvoltage 16
5 with the withstand voltage 17
5.1 dielectric strength characteristic 17
5.1.1 Overview 17
5.1.2 Effect of polarity and over-voltage waveform 18
5.1.3 phase insulation and longitudinal insulation 18
5.1.4 Effect of weather conditions outside insulation 18
5.1.5 insulation disruptive discharge probability 19
5.2 Performance Indicators 20
5.3 insulation coordination program 21
5.3.1 Overview 21
5.3.2 Length (frequency) voltage and temporary overvoltage insulation coordination 22
Over-voltage insulation before 5.3.3 slow wave complex 23
5.3.4 Before too fast wave voltage insulation coordination 25
6 requires withstand voltage 26
6.1 Overview 26
6.2 Atmospheric Correction 26
6.2.1 Overview 26
6.2.2 altitude correction 26
6.3 safety factor of 26
6.3.1 Overview 26
6.3.2 Aging 27
6.3.3 production and assembly dispersion 27
6.3.4 withstand voltage deviation 27
6.3.5 Recommended safety factor (Ks) 27
7 standard (rated) and withstand voltage test procedures 27
7.1 standard withstand voltage 27
7.1.1 Overview 27
7.1.2 standard switching impulse withstand voltage 28
7.1.3 Standard lightning impulse withstand voltage 28
7.2 Test conversion factor Kt 29
7.3 with type testing to determine the tolerance of the insulation 29
7.3.1 Type of insulation and Test Method 29
7.3.2 non-self-restoring insulation 30
7.3.3 Self-restoring insulation 30
7.3.4 composite insulation 30
Limit of 31 7.3.5 Test Procedure
31 7.3.6 Select the type of test procedures
7.3.7 Type test voltage selection 32
Eight pairs of special consideration substation 32
8.1 Overview 32
8.1.1 Typical substation 32
8.1.2 operating voltage 33
8.1.3 temporary overvoltage 33
8.1.4 before slow overvoltage 33
8.1.5 fast front overvoltage 33
8.2 over-voltage insulation coordination 34
8.2.1 Ⅰ Um range of 40.5kV and below the power distribution system substation 34
8.2.2 Ⅰ Um substation within the range of between 252kV and 72.5kV system 34
8.2.3 within the scope Ⅱ system substation 34
Appendix A (informative) ground fault caused by temporary overvoltage 36
Annex B (informative) Weibull (Weibul) probability distribution 39
B.1 General Description 39
B.2 external insulation disruptive discharge probability 39
B.3 overvoltage cumulative frequency distribution 41
Annex C (informative) closing line and representation slow waves generated before reclosing overvoltage determined 43
C.1 General Description 43
Probability C.2 expected relatively representative overvoltage amplitude distribution 43
Probability C.3 expected phase overvoltage representative amplitude distribution 43
C.4 insulating properties 44
C.5 numerical example 46
Transfer Appendix D (informative) over-voltage transformer 50
D.1 General Description 50
D.2 passed temporary overvoltage 50
D.3 capacitive passing shock wave 51
D.4 emotional shock wave passed 52
Appendix E (Informative Appendix) lightning over-voltage 55
E.1 General Description 55
E.2 determine the critical distance (Xp) 55
E.3 representative lightning over-voltage amplitude estimated 56
E.4 simplified method 58
E.5 representative lightning overvoltage setting the maximum 59
E.6 representative lightning overvoltage EMTP traveling wave method to calculate the value of 60
Annex F (informative) calculated from the experimental data breakdown strength of the air gap 61
F.1 General Description 61
F.2 for frequency response characteristic voltage insulation 61
F.3 former slow overvoltage insulation response 62
Overvoltage before insulating F.4 fast wave response 62
Examples Appendix G (informative) Insulation Coordination Program 65
G.1 General Description 65
Numerical Example G.2 range Ⅰ system (nominal voltage 220kV) 65
Numerical computing device G.3 range Ⅱ 70 cases
Numerical G.4 1100kV computing device Example 75
Numerical G.5 range Ⅰ Um = 12kV power distribution system substation computing device 79
References 83
Foreword
GB 311 "insulation coordination" has or plans to release the following sections.
--- Part 1. Definitions, principles and rules;
--- Part 2. Guidelines for the use;
--- Part 3. HVDC converter station insulation coordination procedures;
--- Part 4. Insulation Coordination of grid computing and simulation Guide.
This is Part 2 GB 311's.
This section drafted in accordance with the rules of GB/T 1.1-2009 and GB/T 20000.2-2009 given.
This Part replaces GB/T 311.2-2002 "Insulation coordination - Part 2. insulated high voltage transmission and distribution equipment use guidelines."
This section combined with the latest revision of GB 311.1-2012 60071-2 and IEC on the main technical content.1996 equivalent, combined with our
State actual supplement and modify.
This section compared with the GB/T 311.2-2002, in addition to editorial changes outside the main technical changes are as follows.
--- The "voltage correction factor Kvc" to "uncertainty factor with Kcd", and change the content of the insulation coordination procedure (see 5.3);
--- Delete the words "In order to ensure the entire impact device satisfies a predetermined withstand voltage air gap" Appendix;
--- Insulation coordination calculation example of the program increases the insulation coordination procedures and equipment insulation level 1100kV example (see Appendix G).
The partial modification using IEC 60071-2.1996 "Insulation coordination - Part 2. Guidelines", and IEC 60071-2.1996 standard
Technical differences and their reasons are as follows.
--- According to the actual situation in our country "before the slow wave overvoltage" increase "over-voltage arc grounding" (see 4.3.3);
--- In order to facilitate the application of the guidance in the "insulation coordination procedures" in the inclusion of the "method of selection of insulation coordination," the description (see 5.3);
--- Because of the altitude correction we have made provisions in GB 311.1-2012, and therefore not be described in this section;
--- Give our substation actual wiring diagram (see Figure 8.1 10);
--- Take our typical maximum voltage 550kV equipment as "front line closing and reclosing representative slow waves generated overvoltage indeed
Fixed "and" Numerical examples "(see C.5);
--- Take our four typical equipment highest voltage. 12kV, 252kV, 550kV and 1100kV as insulation coordination program calculates
Example (see Appendix G);
--- GB 311.1 merely because power transmission equipment, insulation coordination and overhead lines insulated with existing standards, it is not considered in this section
Insulated overhead lines with which 311.1-2012 consistent with GB .
The main difference between the single vertical above terms relate to 1996 has passed an empty space at its outer margin. This part of IEC 60071-2
Line (|) were marked.
This part is proposed by the China Electrical Equipment Industrial Association.
This part of the National high-voltage test technique and insulation with Standardization Technical Committee (SAC/TC163) centralized.
This section is responsible for drafting unit. Xi'an High Voltage Apparatus Research Institute Co., Ltd., State Grid Electric Power Research Institute.
Participated in the drafting of this section. National Insulator arrester Quality Supervision and Inspection Center, the State Power Capacitor of Quality Supervision and Inspection Center,
Xi'an Jiaotong University, China Electric Power Research Institute, Kunming Electric Apparatus Research Institute, State Grid DC Project Construction Company Limited, China Southern Power Grid Technology
Research centers, high-voltage electrical machinery industry product quality inspection center (Shenyang), Shaanxi Electric Power Research Institute, Hubei Electric Power Research Institute,
Xi'an Electric Switch Electric Co., Ltd., New Northeast Electric (Shenyang) High Voltage Switchgear Co., Ltd., Henan high level of electrical Co., Ltd., Xi'an
Minute. For undated references, the latest edition (including any amendments) apply to this section.
GB 311.1-2012 insulation coordination - Part 1. Definitions, principles and rules (IEC 60071-1.2006 and IEC 60071-1
Amendment No. 1.2010, MOD)
GB/T 772 high-voltage porcelain insulators technical conditions
GB/T 7327 AC systems with silicon carbide surge arresters
GB 11032 metal oxide surge arresters without gaps (GB 11032-2010, IEC 60099-4.2006, MOD)
GB/T 16927.1-2011 high voltage test techniques - Part 1. General definitions and test requirements (IEC 60060-1.2010,
MOD)
GB/T 26218.1 under filthy conditions Insulators selection and sizing - Part 1. Definitions, information and general
Principles (GB/T 26218.1-2010, IEC /T S60815-1.2008, MOD)
GB/T 28182 rated voltage of 52kV and below, with series gap arrester (GB/T 28182-2011, IEC 60099-6.
2002, MOD)
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