IEC 60909-3 Indice PDF
IEC 60909-3 Indice PDF
IEC 60909-3 Indice PDF
INTERNATIONALE IEC
INTERNATIONAL 60909-3
STANDARD Deuxième édition
Second edition
2003-09
Part 3:
Currents during two separate simultaneous
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line-to-earth short circuits and partial short-
circuit currents flowing through earth
Numéro de référence
Reference number
CEI/IEC 60909-3:2003
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NORME CEI
INTERNATIONALE IEC
INTERNATIONAL 60909-3
STANDARD Deuxième édition
Second edition
2003-09
Part 3:
Currents during two separate simultaneous
line-to-earth short circuits and partial short-
circuit currents flowing through earth
--``,,,,,``,````,``,,,,`,```,``-`-`,,`,,`,`,,`---
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SOMMAIRE
AVANT-PROPOS ................................................................................................................... 6
1 Domaine d'application.....................................................................................................10
2 Références normatives ...................................................................................................12
3 Termes et définitions ......................................................................................................12
4 Symboles........................................................................................................................16
5 Courants durant deux courts-circuits monophasés simultanés séparés à la terre ...........18
5.1 Méthode de calcul .................................................................................................18
5.1.1 Courant de court-circuit symétrique initial ..................................................18
5.1.2 Valeur de crête du courant de court-circuit, courant de court-circuit
symétrique coupé et courant de court-circuit permanent ............................22
5.1.3 Répartition des courants de courts-circuits à la terre pendant deux
courants de courts-circuits monophasés simultanés séparés à la
terre...........................................................................................................22
6 Courants de court-circuit partiels s'écoulant à travers la terre dans le cas d'un
court-circuit déséquilibré.................................................................................................24
6.1 Méthode de calcul .................................................................................................24
6.1.1 Généralités ................................................................................................24
6.1.2 Court-circuit monophasé à la terre dans un poste ......................................24
6.1.3 Court-circuit monophasé à la terre en dehors du poste ..............................28
6.1.4 Court-circuit monophasé au voisinage d'un poste ......................................32
6.1.5 Facteur de réduction des lignes aériennes et des câbles ...........................34
à la terre sur un pylône n d'une ligne aérienne au voisinage d'un poste B .............................32
Figure 8 – Valeur absolue r du facteur de réduction pour les câbles de garde non
magnétiques en fonction de la résistivité ρ du sol ................................................................38
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60909-3 IEC:2003 –3–
CONTENTS
FOREWORD .......................................................................................................................... 7
1 Scope .............................................................................................................................11
2 Normative reference .......................................................................................................13
3 Terms and definitions .....................................................................................................13
4 Symbols..........................................................................................................................17
5 Currents during two separate simultaneous line-to-earth short circuits ............................19
5.1 Calculation method ................................................................................................19
5.1.1 Initial symmetrical short-circuit current .......................................................19
5.1.2 Peak short-circuit current, symmetrical short-circuit breaking current
and steady-state short-circuit current ........................................................23
5.1.3 Distribution of line-to-earth short-circuit currents during two separate
simultaneous line-to-earth short circuits .....................................................23
6 Partial short-circuit currents flowing through earth in the case of an unbalanced
short circuit .....................................................................................................................25
6.1 Calculation method ................................................................................................25
6.1.1 General......................................................................................................25
6.1.2 Line-to-earth short circuit in a station .........................................................25
6.1.3 Line-to-earth short circuit far outside a station ...........................................29
6.1.4 Line-to-earth short circuit in the vicinity of a station ...................................33
6.1.5 Reduction factor for overhead lines and cables ..........................................35
Annex A (informative) Example for the calculation of two separate simultaneous line-
to-earth short-circuit currents ................................................................................................41
Annex B (informative) Examples for the calculation of partial short-circuit currents
through earth ........................................................................................................................45
Figure 4 – Partial short-circuit currents in the case of a line-to-earth short circuit inside
the station B..........................................................................................................................27
Figure 5 – Partial short-circuit currents in the case of a line-to-earth short circuit at
tower T of an overhead line ...................................................................................................29
Figure 6 – Distribution of the total earth current I Etot ............................................................31
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Figure A.1 – Deux courts-circuits monophasés simultanés séparés à la terre sur une
ligne alimentée en antenne, voir Tableau 1 ...........................................................................40
Figure B.1 – Court-circuit monophasé à la terre dans le poste B – Schéma du réseau
avec les postes A, B et C ......................................................................................................46
Figure B.2 – Court-circuit monophasé à la terre dans le poste B – Systèmes direct,
inverse et homopolaire avec les connexions à l'emplacement F du court-circuit à
l'intérieur du poste B .............................................................................................................46
Figure B.3 – Court-circuit monophasé à la terre en dehors des postes A, B et C, sur le
pylône T d'une ligne aérienne – Schéma du réseau pour les postes A, B et C .......................50
Figure B.4 – Court-circuit monophasé à la terre en dehors des postes A, B et C sur le
pylône T d'une ligne aérienne – Systèmes directs, inverse et homopolaire avec les
connexions à l'emplacement F du court-circuit ......................................................................52
Figure B.5 – Potentiel de terre u ETn = U ETn /U ET avec U ET = 1,912 kV et u EBn =
U EBn / U EB avec U EB = 0,972 kV, si le court-circuit monophasé à la terre se produit sur
les pylônes n = 0, 1, 2, 3, au voisinage du poste B conformément à 6.1.4 (voir
l'exemple pour n = 10 à l’Article B.4) .....................................................................................62
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60909-3 IEC:2003 –5–
Figure B.1 – Line-to-earth short circuit inside station B – System diagram for stations
A, B and C ............................................................................................................................47
Figure B.2 – Line-to-earth short circuit inside station B – Positive-, negative- and zero-
sequence systems with connections at the short-circuit location F within station B ................47
Figure B.3 – Line-to-earth short circuit outside stations A, B and C at tower T of an
overhead line – System diagram for stations A, B and C. ......................................................51
Figure B.4 – Line-to-earth short circuit outside the stations A, B and C at tower T of an
overhead line – Positive- negative- and zero-sequence systems with connections
at the short-circuit location F .................................................................................................53
Figure B.5 – Earth potentials u ETn = U ETn / U ET with U ET = 1,912 kV and u EBn =
U EBn / U EB with U EB = 0,972 kV, if the line-to-earth short circuit occurs at the towers n
= 0, 1, 2, 3, in the vicinity of station B according to 6.1.4 (see the example for n = 10 in
Clause B.4). ..........................................................................................................................63
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