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GB/T 40823-2021: Compact equipment assembly for distribution substation(CEADS)
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Compact equipment assembly for distribution substation(CEADS)
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Basic data | Standard ID | GB/T 40823-2021 (GB/T40823-2021) | | Description (Translated English) | Compact equipment assembly for distribution substation(CEADS) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K43 | | Word Count Estimation | 72,762 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 40823-2021: Compact equipment assembly for distribution substation(CEADS)---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.
Compact equipment assembly for distribution substation(CEADS)
ICS 29.130.10
CCSK43
National Standards of People's Republic of China
Compact Packaged Equipment for Power Distribution Substation (CEADS)
[IEC 62271-212.2016,High-voltageswitchgearandcontrolgear-
Released on 2021-10-11
2022-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅴ
IntroductionⅩ
1 Scope 1
2 Normative references 1
3 Terms and definitions 3
4 Normal and special conditions of use 4
4.1 Normal use conditions 4
4.2 Special conditions of use 4
5 Rating 4
5.1 Overview 4
5.2 Rated voltage 5
5.3 Rated insulation level 5
5.4 Rated frequency (fr) 5
5.5 Rated continuous current (Ir, InA) 5
5.6 Rated short-time withstand current (Ik, Ike, Icw) 6
5.7 Rated peak withstand current (Ip, Ipe, Ipk) 6
5.8 Rated short-circuit duration (tk, tke, tcw) 6
5.9 Rated power supply voltage of closing and opening devices and auxiliary and control circuits 7
5.10 Rated power frequency of closing and opening devices and auxiliary circuits 7
5.11 Rated pressure of compressed air source for controllable pressure system 7
5.12 Rated charging level for insulation and/or operation 7
5.101 Rated capacity and total loss of CEADS 7
5.102 The rating of the internal arc class (IAC) and the rating of the protection class in the case of an arc 7
6 Design and structure 9
6.1 Overview 9
6.2 Requirements for liquids in CEADS 10
6.3 Requirements for gases in CEADS 10
6.4 Grounding of CEADS 10
6.5 Auxiliary and control equipment 10
6.6 Power operation 11
6.7 Energy storage operation 11
6.8 Operations that do not rely on manpower or power (non-locking operations) 11
6.9 Manually operated drives 11
6.10 Operation of the trip unit 11
6.11 Low pressure and high pressure blocking and monitoring devices 11
6.12 Nameplate 11
6.13 Interlocking device 11
6.14 Position indication 11
6.15 Degree of protection provided by the enclosure 12
6.16 Creepage distance of outdoor insulator 12
6.17 Gas and vacuum sealing 12
6.18 Liquid sealing 12
6.19 Fire hazard (flammability) 12
6.20 Electromagnetic compatibility (EMC) 12
6.21 X-ray emission 12
6.22 Corrosion 12
6.101 Protection against mechanical stress 12
6.102 Environmental protection against internal defects 13
6.103 Internal arc fault 13
6.104 Housing 13
6.105 Acoustic emission 13
6.106 Electromagnetic Field 13
7 Type test 14
7.1 General 14
7.2 Insulation test 15
7.3 Radio interference voltage test 17
7.4 Measurement of loop resistance 17
7.5 Continuous current test 17
7.6 Short-time withstand current and peak withstand current test 22
7.7 Verification of protection level 23
7.8 Seal test 23
7.9 Electromagnetic compatibility test (EMC) 23
7.10 Additional tests for auxiliary and control circuits 24
7.11 X-ray test of vacuum interrupter 24
7.101 Internal arc test and arc fault test 24
7.102 Verification of closing and breaking capacity 28
7.103 Mechanical operation test 28
7.104 Mechanical stability test 28
7.105 Pressure tolerance test of inflatable compartment 28
7.106 Measurement of leakage current of non-metallic enclosure 28
7.107 Climate protection test 28
7.108 Measurement or calculation of electromagnetic fields 28
8 Factory test 29
8.1 Overview 29
8.2 Main circuit insulation test 29
8.3 Auxiliary and control circuit test 30
8.4 Main circuit resistance measurement 30
8.5 Seal test 30
8.6 Design and visual inspection 30
8.101 Mechanical operation test of high-voltage functional unit 30
8.102 Pressure test of inflatable compartment 30
8.103 Test after field assembly 30
8.104 Fluid state measurement after filling fluid on site 30
9 Guidelines for the selection of CEADS 31
9.1 Overview 31
9.2 Selection of ratings 31
9.3 Continuous or transient overload caused by changes in operating conditions 31
9.101 Selection of internal arc level 31
9.102 Information 33
10 Information provided with inquiry sheets, bids and orders 36
10.1 Overview 36
10.2 Attached with inquiry and order information 36
10.3 Information accompanying the tender 37
11 Transportation, installation, operation and maintenance rules 38
11.1 Overview 38
11.2 Transportation and storage 38
11.3 Installation 38
11.4 Operation 39
11.5 Maintenance 39
11.6 Disassembly, recycling and disposal at the end of service life 39
12 Security 39
12.1 Overview 39
12.101 Electrical aspects 40
12.102 Mechanical aspects 40
12.103 Aspects of heat 40
12.104 Internal arc aspect 40
12.105 Other aspects 40
13 The impact of the product on the environment 40
Appendix A (informative) Structural changes of this document compared with IEC 62271-212.2016 41
Appendix B (informative) Types and applications of CEADS 47
Appendix C (Normative) CEADS test method under internal arc fault conditions 50
Appendix D (Normative) Test to verify CEADS sound level 60
Reference 61
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 of Standardization Documents"
Drafting.
This document uses the redrafting method to modify and adopt IEC 62271-212.2016 "High-voltage switchgear and control equipment Part 212.Configuration
Compact Packaged Equipment for Electric Substations (CEADS)".
Compared with IEC 62271-212.2016, this document has more structural adjustments. The structure number changes between the two documents are compared.
See Appendix A for the list.
The technical differences between this document and IEC 62271-212.2016 and the reasons are as follows.
---Regarding normative reference documents, this document has made adjustments with technical differences to adapt to my country's technical conditions and adjustments.
The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows.
● Use GB/T 1094 (all parts) instead of IEC 60076 (all parts) (see 6.1, 6.18, 6.104, 7.2.5, 7.2.7,
9.102, D.1);
● Replace IEC 60076-1.2011 (see 4.1, 5.2, 7.8,
8.2.3, 8.5, 9.102, 10.2);
● Replace IEC 60076-2.2011 (see 7.5.5.2, 7.5.5.6,
9.102);
● Replace IEC 60076-3.2013 (see 8.2.3, 9.102) with GB/T 1094.3-2017 modified to adopt international standards;
● Replace IEC 60076-5.2006 (see 5.6.103,
5.7.103, 5.8.103, 7.6.5, 9.102);
● Replace IEC 60076-7 (see 9.3) with GB/T 1094.7 modified to adopt international standards;
● Replace IEC 60076-10.2016 (see 6.105, 9.102,
D.3, D.4, D.5);
● Replace IEC 60076-11.2004 (see 4.1,
7.5.3.2.3, 7.5.4, 7.5.5.2, 7.5.5.6, 9.102);
● Replace IEC 60076-12.2008 (see 9.3) with GB/T 1094.12 modified to adopt international standards;
● Replace IEC 60076-15.2015 (see 5.12, 6.17,
7.8, 8.5, 8.102);
● Replace IEC 60050-441.1984 (see Chapter 3) with GB/T 2900.20-2016 modified to adopt international standards;
● Replace IEC 62271-200.2011 (see 6.1, 6.104,
7.2.2.6, 7.2.4, 7.2.7, 7.4, 7.5.2, 7.5.5.4, 7.6.2, 7.6.3, 7.101.1, 7.101.2.1, 7.101.5.1, 7.102,
7.103, 7.105, 8.4, 8.101, 8.102, 9.102, C.2, C.3, C.5, C.6);
● Replace IEC 60529.1989 (see 6.15, 6.103, 7.7.1, 9.102) with GB/T 4208 which is equivalent to adopting international standards;
● Replace IEC 60721-1.1990 (see 9.102) with GB/T 4796 which is equivalent to adopting international standards;
● Replace IEC 60721-2-4.1987 (see 9.102) with GB/T 4797.4 which is equivalent to adopting international standards;
● Replace IEC 60721-2-2.2012 (see 9.102) with GB/T 4797.5 which is equivalent to adopting international standards;
● Replace IEC 61439 (all parts) with GB/T 7251 (all parts) (see 6.1);
● Replace IEC 62271-1.2007/AMD1.2011 (see
4.1, 4.2, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6.101, 5.7.101, 5.8.101, 5.9, 5.10, 5.11, 5.12, 6.2, 6.3, 6.4,
6.5, 6.6, 6.7, 6.8, 6.9, 6.10, 6.11, 6.12, 6.13, 6.14, 6.15, 6.16, 6.17, 6.18, 6.19, 6.20, 6.21
6.22, 6.101, 7.1.1, 7.1.2, 7.1.3, 7.2.2.2, 7.2.2.3.2, 7.2.2.4, 7.2.2.5, 7.2.2.6, 7.3, 7.4, 7.5.5.6,
7.6.4, 7.8, 7.9, 7.10.1, 7.10.3, 7.10.4, 7.10.5, 7.11, 7.107, 8.2.2, 8.3, 8.5, 8.6, 9.3, 9.102,
12.1, Chapter 13);
● Replace IEC 60947-1.2007 (see 5.2, 5.3, 6.14,
9.102);
● Replace IEC 62271-202.2014 (see 5.102.2.3,
6.1, 7.2.2.6, 9.102);
● Replace ISO /IEC Guide51.2014 (see 9.101) with GB/T 20002.4-2015 which is modified to adopt international standards;
● Replace IEC /T S60815 (all parts) with GB/T 26218 (all parts) (see 9.102);
● Added GB/T 762 (see 5.102.2.3);
● Added GB/T 2423.10 (see 9.102);
● Added GB 2536 (see 6.2);
● Added GB/T 7251.12 (see 5.102.3.2, 6.103);
● Added GB/T 13540 (see 6.101, 9.102);
● Added GB/T 18859-2016 (see 5.102.3.1, 5.102.3.3, 6.103, 7.101.2.2, 7.101.4, 7.101.5.2,
7.101.6, 9.101);
● Added GB/T 33977 (see 6.106, 7.108);
● Added GB/T 36271.1-2018 (see 6.1);
● Added IEC 60076-13 (see 6.1, 6.18, 6.104, 7.2.5, 7.2.7, 9.102, D.1);
● Deleted IEC 62271-201.2014 (see IEC 62271-214.2016 5.1, 5.104, 6.2.2.6, 6.2.4, 6.2.7,
6.4, 6.5.2, 6.5.5.4, 6.6.2, 6.6.3, 6.101.1, 6.101.2, 6.101.5, 6.102, 6.103, 6.105, 7.4, 7.101,
7.102, 8.102, AA.2, AA.3, AA.5, AA.6).
---Added the terms and definitions of "CEADS with protection level under arc conditions" (see 3.105) to explain the additions in subsequent texts
The content related to the internal arc of the added low-voltage functional unit.
---Deleted the rated value of temperature rise (see 4.5.2 of IEC 62271-212.2016), which is consistent with the structure of GB/T 11022-2020
The content is moved to the experimental part.
---Increase the rated pressure of the compressed air source for the controllable pressure system (see 5.11), which is consistent with the structure of GB/T 11022-2020
To improve the requirements for pneumatic operating mechanism.
---Increase the rated charging level for insulation and/or opening and closing (see 5.12), which is consistent with the structure of GB/T 11022-2020,
Improve the requirements for gas-filled switchgear and transformers.
---Changed the method of determining the total loss of CEADS, changed it to the sum of the losses of all functional units, and changed it to only the transformer functional unit
The loss is determined, while ignoring the loss of other functional units and internal connection lines (see 5.101). This is because compared to the transformer function
The loss of the unit and the loss of other functional units are very low, and there is no measurement requirement in the relevant standards.
---Added if the "manufacturer specifies CEADS with a protection level under arc conditions; or CEADS is installed in general public
For areas that are accessible to the public (such as residential areas, etc.), the requirements for certain rated values should be specified (see 5.102.1).
---Added "corresponding to the protection level of the low-voltage functional unit in the case of arc" related rating requirements (see 5.102.3) to standardize
The protection level of the low-voltage functional unit in the case of an arc.
---Change the note in IEC 62271-212.2016 as the main text, requiring "If certain parts of the CEADS shell will become substation
Part of the station housing, which should meet the relevant requirements of GB/T 17467-2020 or GB/T 36271.1-2018 (if applicable)
“Requirement” and add “The final assembly of the complete CEADS shall meet the requirements of this document” (see 6.1). If the shell of CEADS will become
It is necessary to design and test a part of the substation shell in accordance with the relevant standards of the substation, and this document is aimed at
The fully assembled CEADS is specified here.
---Added that for the transformer functional unit, the insulating liquid should meet the requirements of GB 2536 or the agreement (see 6.2), the insulation of the transformer
Liquid has its own special standard requirements, which are different from high-voltage switchgear, which is clarified here.
---Added the test requirements (see 6.4) when the continuity of the connecting wire between the metal cover or the door and the main ground conductor is suspected to better ensure its connection
Ground continuity to protect the lives of people around the equipment.
---Added the rating requirements of the "manually operated drive" (see 6.9), which is consistent with the structure of GB/T 11022-2020,
Improve the requirements for this type of drive.
---Added the requirements for the identification information of the mass (kg) and the protection level in the case of arcing in the nameplate (see 6.12), CEADS may
Equipped with transformer function unit, with great transportation quality, the quality is marked on the nameplate, which is more convenient for transportation and hoisting. Increase arc
Under the circumstances, the protection level information is convenient for users to apply CEADS safely.
---Changed the requirements of the mechanical impact energy rating, moved from 6.101 (IEC 62271-214.2016 5.101) to the enclosure to provide
In the protection level (see 6.14), the protection level provided by the shell includes IP and IK. This movement is more standardized and convenient
understand.
---Added the rated value requirements of the arc ignition protection area of the low-voltage functional unit (see 6.103) to correspond to the added low-voltage functional unit
Relevant requirements for the level of protection in the event of an arc.
---Changed the content of the test items, adjusted the EMC test to a special type test item, and will verify the CEADS sound level test
Adjusted to mandatory type test items when applicable (see 7.1.1) to adapt to my country's technical conditions and increase operability.
--- Delete the test grouping (see 6.1.1 of IEC 62271-212.2016), and keep the same structure as GB/T 11022-2020
Because of this, the grouping requirement is no longer mandatory.
---Changed the power frequency withstand voltage test time requirement for the low-voltage internal connection line in the dry state, from 1min to 5s (see
7.2.3.3), in order to be consistent with the requirements in GB/T 7251.1-2013, to avoid requirement conflicts and repeated tests.
---Added the requirement of "Partial discharge measurement of transformer functional unit see GB/T 1094 (all parts)" (see 7.2.7) to supplement
Partial discharge measurement requirements for transformer functional units.
---Added "If the high-voltage functional unit has passed the type test, only the resistance of the high-voltage internal connection line needs to be measured" (see 7.4), to
Avoid repeating the test.
--- Increased the short-term withstand current and peak withstand current test summary requirements (see 7.6.1) to better standardize the implementation of the test.
--- Added "If the high-voltage/low-voltage transformer functional unit has been tested in accordance with relevant standards, it is not necessary to repeat this test"
Description (see 7.6.5) to avoid repeated tests.
--- Increased the sealing test requirements for the functional unit of the transformer (see 7.8) to improve the content of the standard specification.
---Deleted the electrical continuity test of grounded metal parts (see 6.10.3 of IEC 62271-212.2016) to avoid comparison with the previous test
The content of the test is duplicated.
---Added the arc fault test test conditions, test procedures, test criteria and result extension requirements (see 7.101) to correspond to the
Increased the test requirements for the protection level of the low-voltage functional unit in the case of arcing.
--- Deleted the content of the sealing and mechanical strength of the liquid-filled compartment (see 6.108 of IEC 62271-212.2016) to avoid
The sequence test content is repeated.
---Added that if the functional unit has been tested in accordance with relevant standards and the test conditions are consistent, it is not required to repeat
In the description, the test items for the complete CEADS factory test (see 8.1) have been changed to avoid repeated tests.
---Change the auxiliary and control loop test, and change to GB/T 11022-2020 8.3 not applicable (see 8.3), each functional unit should
The test is carried out in accordance with the respective standards, and it is not applicable to CEADS as a whole.
---Added "If the manufacturer and the user agree to transport the disassembled unit, the test can be carried out after on-site assembly, and the test does not need to be repeated.
"Re-run" (see 8.4) to solve the problem of repeated assembly and testing of large products.
---Delete the test of auxiliary electrical, pneumatic and hydraulic devices (see 7.103 of IEC 62271-212.2016) to avoid out of contact with components
The factory test is repeated.
--- Deleted the winding resistance measurement test (see 7.104 of IEC 62271-212.2016) to avoid duplication with the component factory test.
--- Deleted the voltage transformation ratio measurement test (see 7.105 of IEC 62271-212.2016) to avoid duplication with the component factory test.
--- Deleted the short-circuit impedance and load loss measurement test (see 7.106 of IEC 62271-212.2016) to avoid leaving the factory with components
The test is repeated.
--- Deleted no-load loss and current measurement test (see 7.107 of IEC 62271-212.2016) to avoid factory test of components
repeat.
--- Deleted the low-voltage functional unit inspection test (see 7.108 of IEC 62271-212.2016) to avoid the factory test of components
repeat.
--- Deleted the protection measures and electrical continuity inspection test of the protection circuit of the low-voltage functional unit (see IEC 62271-212.2016
7.109) to avoid repetition with the component factory test.
---Added the fluid state measurement test (see 8.104) after filling the fluid on site to verify the key points such as the amount of micro water filled in the fluid on site
parameter.
--- Added "User guidance for arc fault suppression in low-voltage functional units, see Appendix A of GB/T 18859-2016" (see
9.101), in order to correspond to the selection method of the protection level in the case of the increased low-voltage functional unit arc.
---Added the requirements for the relative humidity of the air (see 9.102) to supplement the issues that need to be considered when choosing CEADS.
---Added "Additional information that may be proposed for transformer functional units during inquiry, see GB/T 1094.1-2013, 5.7" (see
10.2) to supplement the additional requirements for transformer functional units.
---Added "For functional units with a transport mass of more than 5t, a permanent mark of the center of gravity during transport should be made on at least two adjacent surfaces.
“Zhi” (see 11.3.2) to facilitate CEADS transportation, dispatch and installation, and improve safety.
---Added requirements on other aspects of safety (see 12.105) to supplement the safety tips for operation and maintenance and the use of CEADS.
---The height of CEADS has been changed from 2m to 1.9m (see C.3.2) to be consistent with the requirements of other standards in the system.
The following editorial changes have been made to this document.
---In order to be consistent with my country's technical standard system, the standard name is changed to "Compact Complete Equipment for Power Distribution Substation (CEADS)".
--- In accordance with the requirements of GB/T 1.1-2020, the "Scope" chapter was standardized, and the "High-voltage side AC rated voltage is higher than
40.5kV compact complete equipment can refer to this document" (see Chapter 1);
--- Deleted the note based on the selection of low-voltage insulation levels in different countries (see 4.3 of IEC 62271-212.2016).
--- The explanatory note on the internal arc fault of the low-voltage complete functional unit is deleted (see 5.103 of IEC 62271-212.2016).
---Added more CEADS combination modes (see B.2).
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed by the China Electrical Equipment Industry Association.
This document is under the jurisdiction of the National High Voltage Switchgear Standardization Technical Committee (SAC/TC65).
Drafting organizations of this document. Xi'an High Voltage Apparatus Research Institute Co., Ltd., Shanghai Jinyou Jinhong Intelligent Electric Co., Ltd., Shanghai
Pinggao Tianling Switch Co., Ltd., Cooper (Ningbo) Electric Co., Ltd., Jiangsu Huaguan Electric Group Co., Ltd., ABB (China) Co., Ltd.
Company, Shanghai Electric Transmission and Distribution Test Center Co., Ltd., Beijing ABB High Voltage Switchgear Co., Ltd., Qingdao Terad Electric Co., Ltd.
Company, China Quality Certification Center, Xidian Baoji Electric Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Xi’an Xidian High Voltage Switch
Co., Ltd., Beijing Cree Distribution Automation Co., Ltd., Shaanxi Leban Power Technology Co., Ltd., Chint Electric Co., Ltd.
Company, Shandong Taikai Complete Electrical Appliance Co., Ltd., Xu Ji Group Co., Ltd., State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute, Zhejiang Eight
Da Electronic Instrument Co., Ltd. Shitong Electric Branch, Eaton Power Equipment Co., Ltd., Suzhou Keludongzi Electric Co., Ltd., Eaton Electric
Co., Ltd., Gansu Great Wall Electrical Engineering Research Institute Co., Ltd., Xi'an Xidian Switching Electric Co., Ltd., Xijing College, Guangdong Zhengchaodian
Gas Co., Ltd., Hunan Changgao Complete Electric Co., Ltd., Jiangsu Rugao High Voltage Electric Co., Ltd., Huayi Electric Co., Ltd., Jiangsu
Nanrui Taishida Electric Co., Ltd., Ningbo Aokes High-Tech Co., Ltd., Xinjiang TBEA Automatic Control Equipment Co., Ltd., Henan Senyuan Electric Co., Ltd.
Gas Co., Ltd., Beijing Beikai Electric Co., Ltd., Changde Tianma Electric Co., Ltd., Shanghai Huayin Switch Factory Co., Ltd.,
Fujian Yuneng Electric Power Complete Equipment Co., Ltd., Guangdong Power Grid Co., Ltd. Foshan Power Supply Bureau, State Grid Shanxi Electric Power Company Electric Power Research Institute
Research Institute, Foshan Electric Power Design Institute Co., Ltd., Guangdong Power Grid Co., Ltd., Guizhou Power Grid Co., Ltd. Electric Power Research Institute, Shi Nai
German Electric (China) Co., Ltd.
The main drafters of this document. Zhang Zixiao, Tian Enwen, Feng Wujun, Jiang Ziyuan, Chang Yong, Tan Yan, Shen Zhongwei, Sun Mei, Li Qingping, Liu Haojun,
Zhang Xiangao, Liu Chengxue, Hao Yuliang, Hu Jing, Wu Jiangang, Li Ling, Wang Liang, Huang Hui, Qi Junchen, Qu Dongming, Cao Weizheng, Yin Rongming, Fan Xueming, Gao Jing,
Kou Zhengli, Cai Hansheng, Hou Yanjie, Lei Peng, Wang Yan, Dong Wei, Li Yuanbo, Zhong Zhaolong, Ren Fengfeng, Zheng Weixia, Wang Bangtian, Gaoshan, Ye Shuxin,
Wang Lahong, Zhou Meixing, Wang Pengcheng, Chen Hongfei, Liu Aihua, Yang Weigang, Ye Rui, Wu Hanrong, Luo Manqin, Wang Chengquan, Hou Yinshun, Dai Yongzheng,
Tian Xiaoyue, Wang Cunfu, Wei Kai, Jin Xianghong, Feng Jiaxiang, Jin Xinglong, Wu Weiguo, Jin Ting, Sun Guanghui, Zhang Wei, Liu Chunfang, Fang Jian, Huang Junkai,
Zhu Zhicai, Zhou Xiaohui.
Introduction
Traditional high-voltage/low-voltage distribution substations consist of main electrical components (high-voltage switchgear, distribution transformer
And the corresponding low-voltage power distribution device). This area can be a building used for other functions (non-electrical purposes).
Room, or an independent house (pre-installed or non-pre-installed) specially designed to place the electrical equipment of the substation, or open with fences
area.
A few years ago, in order to seek more compact and standardized substations, the concept of prefabricated substations appeared. GB/T 17467 covers
According to this standard, the main electrical components (high-voltage switchgear, transformer, and low-voltage switchgear) fully comply with their respective products.
According to product standards, the entire substation (including internal connecting wires and housing) is manufactured and tested in the factory after design and type testing. Mutually
Yes, the quality of the substation is guaranteed by the manufacturer.
In addition, other types of complete sets of equipment have also been produced on the market, which include main electrical components and their
The internal connection line is designed, tested and delivered as an independent product as a whole. Therefore, the product can be type tested, in the factory
After being manufactured, tested in the factory, and transported, it is installed in a closed electrical operation area.
This document covers this kind of factory assembly and type-tested products, named as compact complete sets of equipment for power distribution substations
(CEADS). There are many possibilities for its arrangement, this document gives the foreseeable basic set of guidelines.
CEADS is not covered by GB/T 36271.1, but will become a part of the distribution substation.
Considering that adjacent parts can even share certain parts (shell, solid or fluid insulation, etc.), it is necessary to pay attention to the potential between them.
Interaction, so the relevant product standards are neither sufficient nor always applicable to CEADS. This document contains some additional designs and structures
Requirements and test methods are applicable to different types of CEADS. In addition to the specified characteristics, it is also necessary to pay attention to the protection of operators and the general public.
specification.
Compact Packaged Equipment for Power Distribution Substation (CEADS)
1 Scope
This document specifies the operating conditions, ratings, design and structure, testing and selection guidelines of compact complete sets of equipment for power distribution substations, etc.
content.
This document is applicable to the rated frequency of 50 Hz, the high-voltage side AC rated voltage of 3.6kV ~ 40.5kV, and the high voltage/
A complete set of equipment composed of the main electrical function units of a low-voltage power distribution substation. The complete set of equipment can be connected to the grid through a cable, and can be installed in
Indoor or outdoor enclosed electrical operation area.
Refer to this document for compact complete sets of equipment with AC rated voltage higher than 40.5kV on the high-voltage side.
The compact package equipment for distribution substations (CEADS) defined in this document is designed and tested as an independent product, with
Independent serial number and related supporting documents.
The functions of CEADS are.
---Open, close and control the operation of the high-voltage loop;
---Protection of high-voltage/low-voltage transformer functional units;
---High pressure/low pressure conversion;
---Open, close and control the operation and protection of the low-voltage feeder circuit.
The relevant provisions in this document also apply to designs that do not have all of the above functions, but at least have the above two functions, for example.
A device consisting of only the high-voltage/low-voltage conversion function and the switching and control functions for the operation and protection of the low-voltage feeder circuit.
Note. For the use of this document, it is considered that the self-protected transformer is not CEADS but its functional unit, which is carried out in accordance with its own product standard IEC 60076-13
Design and experiment.
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 762 standard current rating (GB/T 762-2002, eqvIEC 60059.1999)
GB/T 1094 (all parts) power transformer [IEC 60076 (all parts)]
GB/T 1094.1-2013 Power Transformer Part 1.General (IEC 60076-1.2011, MOD)
GB/T 1094.2 Power Transformer Part 2.Temperature rise of liquid immersed transformers (GB/T 1094.2-2013, IEC 60076-2.
2011, MOD)
GB/T 1094.3-2017 Power Transformer Part 3.Insulation Level, Insulation Test and External Insulation Air Gap
(IEC 60076-3.2000, MOD)
GB/T 1094.5-2008 Power Transformer Part 5.Ability to withstand short circuit (IEC 60076-5.2006, MOD)
GB/T 1094.7 Power Transformer Part 7.Load Guidelines for Oil-immersed Power Transformers (GB/T 1094.7-2008,
IEC 60076-7.2005, MOD)
GB/T 1094.10-2003 Power Transformer Part 10.Determination of Sound Level (IEC 60076-10.2001, MOD)
GB/T 1094.11-2007 Power Transformer Part 11.Dry-type Transformer (IEC 60076-11.2004, MOD)
GB/T 1094.12 Power Transformer Part 12.Dry-type Power Transformer Load Guide (GB/T 1094.12-2013,
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