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GB/T 24836-2018 English PDF

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GB/T 24836-2018: 1 100 kV gas-insulated metal-enclosed switchgear
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GB/T 24836-20181439 Add to Cart 10 days 1 100 kV gas-insulated metal-enclosed switchgear Valid

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Basic data

Standard ID: GB/T 24836-2018 (GB/T24836-2018)
Description (Translated English): 1 100 kV gas-insulated metal-enclosed switchgear
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K43
Classification of International Standard: 29.240.10
Word Count Estimation: 72,725
Date of Issue: 2018-07-13
Date of Implementation: 2019-02-01
Older Standard (superseded by this standard): GB/Z 24836-2009
Regulation (derived from): National Standard Announcement No. 10 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 24836-2018: 1 100 kV gas-insulated metal-enclosed switchgear

---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.
1 100 kV gas-insulated metal-enclosed switchgear ICS 29.240.10 K43 National Standards of People's Republic of China Replace GB /Z 24836-2009 1100kV gas insulated metal-enclosed switchgear Published on.2018-07-13 Implementation of.2019-02-01 State market supervision and administration China National Standardization Administration issued

Content

Foreword V 1 Overview 1 1.1 Scope 1 1.2 Normative references 1 2 normal and special conditions of use 2 2.1 Overview 2 2.2 Normal use conditions 2 2.3 Special conditions of use 2 3 Terms and Definitions 3 4 rating 5 4.1 Overview 5 4.2 Rated voltage of the device (Ur) 5 4.3 rated insulation level 5 4.4 Rated frequency (fr) 6 4.5 Rated current and temperature rise 6 4.6 Rated short-time withstand current (Ik) 6 4.7 Rated peak withstand current (Ip) 6 4.8 Rated short circuit duration (tk) 6 4.9 Combined power supply voltage (Ua) for the opening and closing device and auxiliary and control circuits 6 4.10 Shunting device and rated power frequency of auxiliary and control circuits 7 4.11 Pressure rating of compressed air supply for controlled pressure system 7 4.12 rated filling level of gas or liquid for insulation and/or opening and closing 7 5 Design and Structure 7 5.1 Overview 7 5.2 Requirements for liquids in switchgear and control equipment 7 5.3 Requirements for gases in switchgear and control equipment7 5.4 Grounding of switchgear and control equipment 7 5.5 Auxiliary and control equipment 8 5.6 Power operation 8 5.7 Energy storage operation 8 5.8 Operation that does not rely on manpower or power (non-locking operation) 8 5.9 Operation of the trip unit 9 5.10 Low pressure and high pressure lockout and monitoring device 9 5.11 Nameplate 9 5.12 Interlocking device 9 5.13 Position indication and action count 10 5.14 Protection rating of the enclosure 10 5.15 Creepage distance 10 5.16 Gas and vacuum tightness 10 5.17 Liquid tightness 11 5.18 Fire hazard (flammability) 11 5.19 Electromagnetic Compatibility (EMC) 11 5.20 X-ray emission 11 5.21 Corrosion 11 5.101 Pressure fit and monitoring 11 5.102 Internal fault 12 5.103 Shell 13 5.104 partition 13 5.105 Pressure release 15 5.106 Noise 15 5.107 Interface 15 5.108 busbar 16 5.109 expansion joint 16 5.110 Observation window 16 5.111 Maintenance platform 16 6 type test 16 6.1 General 16 6.2 Insulation test 18 6.3 Radio interference voltage (riv) test 21 6.4 Loop resistance measurement 21 6.5 Temperature rise test 22 6.6 Short-time withstand current and peak withstand current test 22 6.7 Verification of the degree of protection 23 6.8 Gas tightness test and gas state measurement 23 6.9 Electromagnetic Compatibility Test (EMC) 24 6.10 Additional tests for auxiliary and control loops 24 6.11 X-ray test procedure for vacuum interrupters 24 6.101 Verification of closing and breaking capacity 24 6.102 Mechanical and environmental tests 24 6.103 Shell verification test 25 6.104 Test of partitions 26 6.105 Test under internal fault arc conditions 26 6.106 Thermal performance test for supporting insulators 26 6.107 Corrosion test for ground connections 26 6.108 Corrosion test of the outer casing 27 6.109 Test of insulating tie rods 27 7 Factory test 27 7.1 Overview 27 7.2 Main circuit insulation test 27 7.3 Test of auxiliary and control loops 28 7.4 Measurement of main loop resistance 28 7.5 Sealing test and gas humidity measurement 28 7.6 Design and visual inspection 29 7.101 Pressure test of the outer casing 29 7.102 Mechanical operation and mechanical properties test 29 7.103 Tests for auxiliary circuits, equipment and interlocks in control units 29 7.104 Test of partitions 29 7.105 Insulation test of insulating parts 30 7.106 Mechanical strength test of insulating parts 30 8 Switching equipment and control equipment selection guide 30 8.1 Overview 30 8.2 Selection of rating 30 8.3 Continuous and temporary overload caused by changes in operating conditions 30 9 Information provided with inquiry, tender and order 30 9.1 Overview 30 9.2 Information on Inquiry Orders and Orders 30 9.3 Information on tenders 30 10 Transportation, storage, installation, operation and maintenance 30 10.1 Overview 30 10.2 Conditions for transport, storage and installation 30 10.3 Installation 31 10.4 Run 35 10.5 Repair 35 11 Safety 35 12 Product impact on the environment 35 Appendix A (Normative) Test methods for gas-insulated metal-enclosed switchgear under internal arc fault conditions 36 Appendix B (Normative Appendix) Field Test Techniques and Practical Considerations 39 Appendix C (informative) Internal fault related calculations 43 Appendix D (informative) Information required for inquiries, tenders and orders 44 Appendix E (Normative Appendix) Technical Specification for Basin Insulators for 1100kV Gas Insulated Metal-Enclosed Switchgear Reference 67

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB /Z 24836-2009 "1100kV gas insulated metal-enclosed switchgear technical specification". The main differences between this standard and GB /Z 24836-2009 are. --- Modify the "pressure fit" diagram in the design and structure to increase the blocking pressure (see 5.101.1). --- Type test and factory test modify the power frequency voltage test procedure and use a ladder diagram (see 6.2.8.2 and 7.2.1,.2009) Versions 7.2.7.1 and 8.1.1). --- The current used for main loop resistance measurement in type test and factory test is modified to 300A (see 6.4 and 7.4,.2009 edition) 7.4.1 and 8.3). --- Type test "the pressure test of the partition" was changed to "the test of the partition" and combined with the test of the insulator (see 6.104 and 6.106, 7.14 and 7.16 of the.2009 edition). --- Requirements for the addition of temporary workshops during installation (see 10.3). --- Added "Technical Specification for Basin Insulators for 1100kV Gas Insulated Metal-Enclosed Switchgear" (see Appendix E). This standard shall be used in conjunction with GB/T 11022-2011. Unless otherwise specified in this standard, this standard implements GB/T 11022- The provisions of.2011. In order to simplify the repeated expression of the relevant requirements, the chapter number of this standard is the same as GB/T 11022. For these chapters Supplements are given under the same reference heading, and additional terms are numbered starting from 101. This standard was proposed by the China Electricity Council. This standard is under the jurisdiction of the National UHV AC Transmission Standardization Technical Committee (SAC/TC569). This standard is drafted by. State Grid Corporation, China Electric Power Research Institute Co., Ltd., Xi'an High Voltage Electric Apparatus Research Institute Any company. Participated in the drafting of this standard. State Grid Corporation East China Branch, State Grid Jiangsu Electric Power Company Electric Power Research Institute, State Grid Anhui Province Electric Power Company Electric Power Research Institute, Tsinghua University, Pinggao Group Co., Ltd., Henan Pinggao Electric Co., Ltd., Xi'an Xidian Switching Co., Ltd. Gas Co., Ltd., New Northeast Electric Group High Voltage Switchgear Co., Ltd., Shanghai Xidian High Voltage Switch Co., Ltd., New Northeast Electric Group Super High Pressure Co., Ltd. The main drafters of this standard. Shu Yin, Cui Jingchun, Han Xiancai, Sun Gang, Wang Chengyu, Wang Ninghua, Peng Jiang, Xu Lingling, Tian Enwen, and Yan Yan. Participated in the drafting of this standard. Li Peng, Cui Boyuan, Gu Nihong, Yuan Continental, Liu Zhaolin, Xu Guozheng, Zhang Pengfei, Han Shuzhen, Zhang Meng, Yu Liangqing, Zhao Bonan, Li Xinyi, Ye Jiantao, Tao Fengbo, Fang Wei, Sun Eternity, Chen Yun. The previous versions of the standards replaced by this standard are. ---GB /Z 24836-2009. 1100kV gas insulated metal-enclosed switchgear

1 Overview

1.1 Scope This standard specifies the use conditions, rating, design and structure, test, and communication of AC 1100kV gas insulated metal-enclosed switchgear. Use guidelines, transportation, storage, installation, operation and maintenance. This standard applies to 1100kV indoor and outdoor installation, frequency 50Hz single-pole closed SF6 gas insulated metal-enclosed switch The insulation is obtained at least partially through the insulating gas rather than the air at atmospheric pressure. For the convenience of the use of this standard, the terms "GIS" and "switching device" are used to describe "gas-insulated metal-enclosed switchgear". The gas-insulated metal-enclosed switchgear covered by this standard is composed of individual components that can be directly connected together, and these Components can only be operated this way. According to the requirements, this standard has improved and supplemented the relevant standards that constitute the individual components of GIS. 1.2 Normative references The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 1040.1-2006 Determination of tensile properties - Part 1. General GB/T 1408.1-2006 Test methods for electrical strength of insulating materials - Part 1 GB/T 1409-2006 Measuring the permittivity and dielectric loss of electrical insulating materials at power frequency, audio, high frequency (including the wavelength of meter wave) Recommended method of consumption factor GB/T 1410-2006 Test method for volume resistivity and surface resistivity of solid insulating materials GB/T 1411-2002 Dry solid insulation material resistance to high voltage, low current arc discharge test GB/T 1984-2014 high voltage AC circuit breaker GB/T 1985-2014 high voltage AC disconnector and earthing switch GB/T 2035 plastic terminology and its definition GB/T 2423.17 Environmental testing of electric and electronic products - Part 2. Test method test Ka. salt spray GB/T 2567-2008 resin casting body performance test method GB/T 2900.8 Electrotechnical terminology insulator GB/T 2900.19 Electrotechnical terminology high voltage test technology and insulation coordination GB/T 3785 (all parts) Electroacoustic sound level meter GB/T 4109 insulating sleeve with AC voltage higher than 1000V GB/T 4472-2011 Determination of density and relative density of chemical products GB/T 7354 partial discharge measurement GB/T 8905 SF6 electrical equipment in gas management and testing guidelines GB/T 9341-2008 Determination of bending properties of plastics GB/T 9789-2008 Metal and other inorganic coatings, sulfur dioxide corrosion test under normal condensation conditions GB/T 11022-2011 Common technical requirements for high voltage switchgear and control equipment standards GB/T 11023 high-voltage switchgear sulphur hexafluoride gas seal test method GB/T 12022 industrial sulfur hexafluoride GB/T 13540 high-voltage switchgear and control equipment for seismic requirements GB/T 16927.1 High Voltage Test Technique Part 1. General Definitions and Test Requirements GB/T 21429 Definition of hollow composite insulators for outdoor and indoor electrical equipment, test methods, acceptance criteria and design recommendations GB/T 22381 Gas insulated metal-enclosed switchgear with rated voltage of 72.5kV and above and fluid-filled and extruded insulated electric power Cable connection fluid filled and dry cable termination GB/T 22382-2017 Gas-insulated metal-enclosed switchgear with rated voltage 72.5kV and above and power transformer direct connection GB/T 22567-2008 Test method for determining glass transition temperature of electrical insulating materials GB/T 23752 Pressure-bearing and non-pressure-bearing hollow porcelain and glass insulators for electrical equipment with rated voltages above 1000V GB/T 26218 (all parts) Selection and sizing of high-voltage insulators used under dirty conditions GB/T 27761-2011 Test method for weight loss and residual amount of thermogravimetric analyzer GB/T 28537 Use and treatment of sulphur hexafluoride (SF6) in high voltage switchgear and control equipment

2 normal and special conditions of use

2.1 Overview According to the provisions of Chapter 2 of GB/T 11022-2011, and supplemented as follows. Certain components of the GIS, such as pressure relief devices and pressure and density monitoring devices, may be affected by altitude. Manufacture if needed The factory should take appropriate measures. 2.2 Normal use conditions According to the provisions of 2.2 of GB/T 11022-2011, the specific requirements are shown in Table 101. 2.3 Special conditions of use According to the provisions of 2.3 of GB/T 11022-2011, the specific requirements are shown in Table 101. If there is a case where the use is greater than ( >) in the table, the specific value shall be determined by the user in accordance with the provisions of GB/T 11022-2011. Table 101 Reference table for GIS use conditions project Normal special Outdoor indoor and outdoor indoors Ambient air temperature Minimum/°C -10, -25, -30, -40 -5, -15, -25 -50 -25 Highest/°C 40 40 40 55 Solar radiation/(W/m2) 1000 > 1000 Elevation/m 1000 1000 >1000 Pollution level de Ice/mm 10 or 20 >20 Wind speed/(m/s) 34 > 34 Table 101 (continued) project Normal special Outdoor indoor and outdoor indoors Condensation or condensation exists in existence The vibration level is not applicable. It is not applicable to the seismic rating of the equipment according to the provisions of GB/T 13540. Note 1. The user's technical specifications can be any combination of the above normal and special conditions of use. Note 2. The pollution levels d and e are in accordance with 8.3 of GB/T 26218.1-2010. Note 3. When the temperature is low, pay attention to the effect of liquefaction of SF6 gas on the normal use of the product.

3 Terms and definitions

The following terms and definitions as defined in GB/T 11022 apply to this document. 3.101 Metal-enclosed switchgear and control equipment metal-enclosedswitchgearandcontrolgear In addition to the access line, the switchgear and control equipment are completely enclosed by the grounded metal casing. [GB/T 2900.20-2016, definition 4.4] 3.102 Gas insulated metal-enclosed switchgear gas-insulatedmetal-enclosedswitchgear At least a portion of a metal-enclosed switchgear that uses a gas above atmospheric pressure as an insulating medium. Note 1. Three-pole closed gas-insulated switchgear is suitable for switchgear with three poles enclosed in a common enclosure. Note 2. Unipolar enclosed gas insulated switchgear is suitable for switchgear enclosed in a separate enclosure. [GB/T 2900.20-2016, definition 4.5] 3.103 Gas-insulated switchgearenclosure for gas insulated switchgear A gas-insulated metal-enclosed switchgear component that safely maintains the insulating gas under specified conditions At the edge level, and protect the inside of the device from external influences and provide security for personnel. 3.104 Removable connection removablelink The components of the conductor can easily isolate and remove the two parts of the GIS from each other. 3.105 Compartment compartment A part of the gas-insulated metal-enclosed switchgear is completely enclosed except that it is connected and controlled to be opened. Note 1. Rewrite GB/T 2900.20-2016, definition 5.6. Note 2. The compartments can be named according to the main components inside them, such as the circuit breaker compartment and the busbar compartment. 3.106 Component Main components of the main circuit and grounding circuit of a gas-insulated metal-enclosed switchgear that achieves specific functions (eg circuit breakers, isolation) Off, load switch, transformer, bushing, busbar, etc.). 3.107 Support insulator supportinsulator Supporting one or more pole conductors or internal insulators that support and secure the arc chute, which may be basin insulators or insulated tables, Columns, tubes, etc. 3.108 Partition partition A support insulator that separates a compartment from other compartments, which is a non-ventilated basin insulator. Note. Rewrite GB/T 2900.20-2016, definition 5.7. 3.109 Bushing A structural member that can carry and insulate one or more pole conductors at the end of the casing, including the manner in which it is connected. 3.110 Main circuit maincircuit The gas-insulated metal contained in the circuit for delivering electrical energy encloses all of the conductive components of the switchgear. Note. Rewrite GB/T 2900.20-2016, definition 7.2. 3.111 Auxiliary circuit auxiliarycircuit All of the gas-insulated metal-enclosed switchgear included in the circuit for control, measurement, signal and regulation (unlike the main circuit) Conductive parts. Note 1. Rewrite GB/T 2900.20-2016, definition 7.4. Note 2. The auxiliary circuit of the gas insulated metal-enclosed switchgear includes the control and auxiliary circuits of the switchgear. 3.112 Shell design temperature designtemperatureofenclosures The maximum temperature that the enclosure can achieve under the most severe conditions of use specified. 3.113 Shell design pressure designpressureofenclosures Used to determine the relative pressure of the housing design. Note 1. It is at least equal to the highest pressure inside the casing when the maximum temperature at which the insulating gas can be reached under the most severe conditions of use specified. Note 2. The design pressure is determined without regard to the transient pressure during or after the breaking operation (eg circuit breaker). 3.114 The design pressure of the partition designpressureofpartition Relative pressure on both sides of the partition. 3.115 Pressure relief device operating pressure operatingpressureofpressurereliefdevice The relative pressure at which the pressure relief device is released. 3.116 Routine test pressures for outer casings and baffles routinetestpressureofenclosuresandpartition All separators and enclosures should be subjected to relative pressure after manufacture. 3.117 Type test pressure of the outer casing and partition typetestpressureofenclosuresandpartition The relative pressure that all separators and casings should withstand during type testing. 3.118 Rupture fragmentation Damage to the casing due to increased pressure, accompanied by solid material thrown. Note. The term “no crack in the casing” is explained as follows. ---The compartment has no blasting; --- No solid parts fly out of the compartment. The exceptions are. ---The components of the pressure relief device if they are directly projected in the specified direction; --- The burning particles and molten material produced by the shell burning. 3.119 Destructive discharge In the case of electrical stress, the phenomenon related to insulation failure, the discharge completely bridges the tested insulation, and the voltage drop between the electrodes is zero or almost It is zero. 3.120 Use cycle serviceperiod Until the time required for repair, including opening the inflatable compartment. 3.121 Transport unit transportunit A component of a gas-insulated metal-enclosed switchgear that can be shipped without disassembly.

4 rating

4.1 Overview The rating of 1100kV gas insulated metal-enclosed switchgear and its operating m......
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