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

配电变电站用紧凑型成套设备（CEADS）

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 40823-2021 is the English-translated version of 配电变电站用紧凑型成套设备（CEADS）.

GB/T 40823-2021 is the Chinese standard "Compact equipment assembly for distribution substation(CEADS)". Its scope clause reads: 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.

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Document preview — GB/T 40823-2021

National Standard of the People's Republic of China

Classification: K 43

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Normal and special conditions of use
4.1 Normal use conditions
4.2 Special conditions of use
5 Rating
5.1 Overview
5.2 Rated voltage
5.3 Rated insulation level
5.4 Rated frequency (fr)
5.5 Rated continuous current (Ir, InA)
5.6 Rated short-time withstand current (Ik, Ike, Icw)
5.7 Rated peak withstand current (Ip, Ipe, Ipk)
5.8 Rated short-circuit duration (tk, tke, tcw)
5.9 Rated power supply voltage of closing and opening devices and auxiliary and control circuits
5.10 Rated power frequency of closing and opening devices and auxiliary circuits
5.11 Rated pressure of compressed air source for controllable pressure system
5.12 Rated charging level for insulation and/or operation
5.101 Rated capacity and total loss of CEADS
6 Design and structure
6.1 Overview
6.2 Requirements for liquids in CEADS
6.3 Requirements for gases in CEADS
6.4 Grounding of CEADS
6.5 Auxiliary and control equipment
6.6 Power operation
6.7 Energy storage operation
6.8 Operations that do not rely on manpower or power (non-locking operations)
6.9 Manually operated drives
6.10 Operation of the trip unit
6.11 Low pressure and high pressure blocking and monitoring devices
6.12 Nameplate
6.13 Interlocking device
6.14 Position indication
6.15 Degree of protection provided by the enclosure
6.16 Creepage distance of outdoor insulator
6.17 Gas and vacuum sealing
6.18 Liquid sealing
6.19 Fire hazard (flammability)
6.20 Electromagnetic compatibility (EMC)
6.21 X-ray emission
6.22 Corrosion
6.101 Protection against mechanical stress
6.102 Environmental protection against internal defects
6.103 Internal arc fault
6.104 Housing
6.105 Acoustic emission
6.106 Electromagnetic Field
7 Type test
7.1 General
7.2 Insulation test
7.3 Radio interference voltage test
7.4 Measurement of loop resistance
7.5 Continuous current test
7.6 Short-time withstand current and peak withstand current test
7.7 Verification of protection level
7.8 Seal test
7.9 Electromagnetic compatibility test (EMC)
7.10 Additional tests for auxiliary and control circuits
7.11 X-ray test of vacuum interrupter
7.101 Internal arc test and arc fault test
7.102 Verification of closing and breaking capacity
7.103 Mechanical operation test
7.104 Mechanical stability test
7.105 Pressure tolerance test of inflatable compartment
7.106 Measurement of leakage current of non-metallic enclosure
7.107 Climate protection test
7.108 Measurement or calculation of electromagnetic fields
8 Factory test
8.1 Overview
8.2 Main circuit insulation test
8.3 Auxiliary and control circuit test
8.4 Main circuit resistance measurement
8.5 Seal test
8.6 Design and visual inspection
8.101 Mechanical operation test of high-voltage functional unit
8.102 Pressure test of inflatable compartment
8.103 Test after field assembly
8.104 Fluid state measurement after filling fluid on site
9 Guidelines for the selection of CEADS
9.1 Overview
9.2 Selection of ratings
9.3 Continuous or transient overload caused by changes in operating conditions
9.101 Selection of internal arc level

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.

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,

GB/T 11022 | GB/T 38328 | GB/T 30092 | GB/Z 15166.8 | GB/T 45932 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 121 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 1094 · IEC 60076 · GB/T 1094.2 · GB/T 1094.2-2013 · GB/T 1094.5-2008

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