Electric power engineering - Modal components in three-phase a.c. systems - Quantities and transformations

IEC 62428:2008 deals with transformations from original quantities into modal quantities for the widely used three-phase a.c. systems in the field of electric power engineering. The examination of operating conditions and transient phenomena in three-phase a.c. systems becomes more difficult by the resistive, inductive or capacitive coupling between the phase elements and line conductors. Calculation and description of these phenomena in three-phase a.c. systems are easier if the quantities of the coupled phase elements and line conductors are transformed into modal quantities. The calculation becomes very easy if the transformation leads to decoupled modal systems. The original impedance and admittance matrices are transformed to modal impedance and admittance matrices. In the case of decoupling of the modal quantities, the modal impedance and admittance matrices become diagonal matrices.

Elektrische Energietechnik - Modale Komponenten in Drehstromsystemen - Größen und Transformationen

Energie électrique - Composantes modales dans les systèmes a.c. triphasés - Grandeurs et transformations

La CEI 62428:2008 traite des transformations des grandeurs originales en grandeurs modales pour les systèmes a.c. triphasés qui sont largement utilisés dans le domaine de l'énergie électrique. L'étude des conditions de fonctionnement et des régimes transitoires dans les systèmes a.c. triphasés est rendue difficile du fait des couplages résistifs, inductifs ou capacitifs entre les éléments de phase et entre les conducteurs de ligne. Le calcul et la description de ces phénomènes dans les systèmes a.c. triphasés est plus facile si les grandeurs concernant les éléments de phase et les conducteurs de ligne sont transformées en grandeurs modales. Le calcul devient très facile si la transformation conduit à des systèmes modaux découplés. Les matrices d'impédances et d'admittances originales sont transformées en matrices d'impédances et d'admittances modales. Dans le cas où les grandeurs modales sont découplées, les matrices d'impédances et d'admittances deviennent diagonales.

Elektroenergetsko inženirstvo - Modalne komponente v trifaznih izmeničnih sistemih - Veličine in transformacije (IEC 62428:2008)

General Information

Status
Published
Publication Date
24-Sep-2008
Withdrawal Date
31-Jul-2011
Current Stage
6060 - Document made available - Publishing
Completion Date
25-Sep-2008

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SLOVENSKI STANDARD
SIST EN 62428:2009
01-januar-2009
(OHNWURHQHUJHWVNRLQåHQLUVWYR0RGDOQHNRPSRQHQWHYWULID]QLKL]PHQLþQLK
VLVWHPLK9HOLþLQHLQWUDQVIRUPDFLMH ,(&
Electric power engineering - Modal components in three-phase a.c. systems - Quantities
and transformations (IEC 62428:2008)
Elektrische Energietechnik - Modale Komponenten in Drehstromsystemen - Größen und
Transformationen (IEC 62428:2008)
Energie électrique - Composantes modales dans les systèmes a.c. triphasés -
Grandeurs et transformations (CEI 62428:2008)
Ta slovenski standard je istoveten z: EN 62428:2008
ICS:
01.060 9HOLþLQHLQHQRWH Quantities and units
29.020 Elektrotehnika na splošno Electrical engineering in
general
SIST EN 62428:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62428:2009

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SIST EN 62428:2009

EUROPEAN STANDARD
EN 62428

NORME EUROPÉENNE
September 2008
EUROPÄISCHE NORM

ICS 01.060; 29.020


English version


Electric power engineering -
Modal components in three-phase a.c. systems -
Quantities and transformations
(IEC 62428:2008)


Energie électrique -  Elektrische Energietechnik -
Composantes modales Modale Komponenten
dans les systèmes a.c. triphasés - in Drehstromsystemen -
Grandeurs et transformations Größen und Transformationen
(CEI 62428:2008) (IEC 62428:2008)




This European Standard was approved by CENELEC on 2008-08-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62428:2008 E

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SIST EN 62428:2009
EN 62428:2008 - 2 -
Foreword
The text of document 25/382/FDIS, future edition 1 of IEC 62428, prepared by IEC TC 25, Quantities and
units, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62428 on
2008-08-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-08-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62428:2008 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60909-0 NOTE  Harmonized as EN 60909-0:2001 (not modified).
IEC 61660 NOTE  Harmonized in EN 61660 series (not modified).
__________

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SIST EN 62428:2009
- 3 - EN 62428:2008
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

1)
IEC 60050-141 - International Electrotechnical Vocabulary - -
(IEV) -
Part 141: Polyphase systems and circuits




1)
Undated reference.

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