Power transformers - Part 23: DC magnetic bias suppression devices

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

01-09-2018

Publisher

International Electrotechnical Committee

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Service conditions
5 Selection principle
6 DC current-limiting device
7 DC current-blocking device
8 Tests
9 Packing, transportation and storage requirements
10 Nameplate specification
11 Technical documentation requirements
Annex A (informative) - Generation mechanism of DC
        bias current of power transformers caused by
        HVDC system
Annex B (informative) - Examples of harmful effects
        of DC bias current
Annex C (informative) - DC current-limiting device
Annex D (informative) - DC current-blocking device
Annex E (informative) - Information needed to calculate
        the DC bias current of transformers
Annex F (informative) - Methods of calculation of DC
        bias current voltage sources
Annex G (informative) - Application examples

IEC TS 60076-23:2018(E) specifies requirements for devices for the suppression of DC magnetic bias of power transformers and convertor transformers. It includes requirements for service conditions, structures, testing, packing, transport and storage.
The devices are connected to neutral points of power transformers and converter transformers to suppress DC bias current in the case an HVDC system is operated in monopole ground return mode or bipolar unbalanced mode. In the case of dedicated metallic return HVDC system, the devices are useful to mitigate DC stray current flowing through power transformers and converter transformers during transient conditions such as DC line fault.
This document applies to DC magnetic bias suppression devices for operation at frequencies of 50 Hz and 60 Hz on power systems having voltages above 110 kV.

DevelopmentNote	Stability Date: 2020. (01/2018)
DocumentType	Technical Specification
Pages	31
PublisherName	International Electrotechnical Committee
Status	Current

Standards	Relationship
VDE V 0532-76-23 : 2019	Identical
DIN IEC/TS 60076-23 : 2019	Identical
PD IEC/TS 60076-23:2018	Identical

IEC 60076-5:2006	Power transformers - Part 5: Ability to withstand short circuit
IEC 60068-3-3:1991	Environmental testing - Part 3-3: Guidance - Seismic test methods for equipments
IEC 60076-3:2013	Power transformers - Part 3: Insulation levels, dielectric tests and external clearances in air
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV	Degrees of protection provided by enclosures (IP Code)
IEC 60137:2017	Insulated bushings for alternating voltages above 1000 V
IEC 61071:2017	Capacitors for power electronics
IEC 62271-1:2017	High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear
IEC 60060-1:2010	High-voltage test techniques - Part 1: General definitions and test requirements
IEC 60168:1994+AMD1:1997+AMD2:2000 CSV	Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1000 V

View more information

US$273.00

Excluding Tax where applicable

Product format

I agree to the DRM document license rules apply against the PDF selection made.

Please confirm that you agree to the document license rules for this document.

I agree to the document license rules .

Please confirm that you agree to the document license rules for this document.

Access your standards online with a subscription

Features

Simple online access to standards, technical information and regulations.
Critical updates of standards and customisable alerts and notifications.
Multi-user online standards collection: secure, flexible and cost effective.

Learn more on subscription solutions

Get in touch with us

IEC TS 60076-23:2018

Power transformers - Part 23: DC magnetic bias suppression devices

Table of Contents

Abstract

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory