GB/T 40823-2021Compact equipment assembly for distribution substation(CEADS) (English PDF)

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).

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,