IEEE Guide for Service to Equipment Sensitive to Momentary Voltage DisturbancesDescripción completa
Descripción: norma ieee
Cambios en la norma
Rotor testing
Switchgear StandardFull description
IEEE Std 1312-1993
:D
IEEE std 81 Slope Method Tables
Criterios para Evaluación de Sistemas Eléctricos de Potencia para Centrales Nucleares de Potencia
ieee stdFull description
:D
Estandard IEEE c57.152Descripción completa
Switchgear Standard
Descripción: estadar de documentación
asfsfFull description
Estandard IEEE c57.152
arc flash hazardFull description
Full description
Descripción: IEEE Std 81 Tutorial Handouts
Desi gnCal cul at i on ForSag& Tensi on cal cul at i o NTRODUCTI ON 1. 0I Thepur pos eoft hi scal cul at i oni st ofindoutt hesag& t ensi onof-kVo -Sqmm mm underv ar i oust emp mput ur e& f ul lwi ndcondi t i onf ort hel i nehasbeenconsi der edt ocheckt hema mandat orycl ear ance& t ensi onval ueat1 ( unl aode dl i ne ). 1. 1STANDARD & REFERANCE Aspe rI EEE6052008 Si t eCondi c t i on Pr oj e c tT e c hni c als pe c i fic at i o n Layout& Sec t i ondrawi ng Conduct orGTP
CULARS 1. 2SYSTEM PARTI Sys t e m nomi nalv ol t age Sys t e m Hi ghes tv ol t age Sys t e m Fr equency Ther malshor tc ktcur r ent atr a t e dv o l t ag e
= = = =
115 126 50 40
= = = = = =
45 0 30 100 40 800
a
= = = = = = =
1 0. 0265 0. 000415 1. 1145 66. 43 0. 0000231
Ec Hi
= =
57000000000 10
RVI CE CON ONDI TI ON 1. 3SERV Maxi mum Ambi entt emp. Mi nAmbi entt emp. Av eg.Ambi entt emp. Maxi mum r el at i v ehumi di t y Maxi mum Wi ndv el oci t y Al t i t udeofsi t eabov ese al e v el DUCTOR DATA 1. 4CONDU Typeofconduct or Nosofconduct or Di ame t er Ar e aofconduct or Equi v l entwei ght Ul t i mat es t r engt h Coffici entofl i near expansi on Modul usofel asi ci t y I ni t i alTensi on
n D Ac W
nf or220kV Subst ai on
e r he a dc o nduc t o rACSR-a r e ao fc o nduc t o r -s ubs t ai o ns agatdai l yt e mput ur eo nunl ao de d de g r e ec e nt g r a de( l o ade dl i ne)& 75de g r e ec e nt g r a de
kV kV Hz kA
⁰
C ⁰ C ⁰ C % m/s m
Nos m m2 kg/m kN 1/⁰ C N/m2 kN
Case-1SagTensi on Cal cul at i on -St r ai nBusConduct or-I EEE TowerSpanLent h Wi ndspeed I cel oadi ng I ni t i alt emp. Maxi mum ambi entt emp. Fi nalconduct ort emp. Dai l yTemp. Hei ghtoft al l ert ower Hei ghtofshor t ert ower Di ffer nce
L Pw Wi ce Ti Tm Tf Td h2 h1 h
= = = = = = = = = =
26. 5 40 0 30 45 85 30 10 10 0
m m/s kg/m ⁰ C ⁰ C ⁰ C ⁰ C m m m
2 Fi nalTensi on( Hf )
AsperI EEE Wher e Ec Ac a Tf Ti Hi Hf mi ‾ mf ‾ g L
Youngmodul us Ar eaofconduct or Coffici entofl i ne ar e xpansi on Fi nalTemp. I ni t i alt emp. I nt i alTensi on Fi nalTemp. I ni t i almas sbyuni t l e ng t h Fi nalmassbyuni t l e ng t hma yi nc l udei c el o adi ng Gr avi t at i oncons t ant Consuct orspanl engt h
Fi nalt ensi on ( Hf )atfinalt emp. bysol vi ngt heeqn-69
= =
57000000000 N/m2 0. 000415 m2
= = = = = =
0. 0000231 1/⁰ C ⁰ C 85 ⁰ C 30 10000 N 85 N 1. 145 kg/m
=
1. 145
kg/m
= =
9. 82 26. 5
m/s2 m
=
Wher e
K1
=
ThenVal ueof
K1
=
Y
=
Hf ³ +Hf ² P=K1mf ²
66746182890
Y
=
546. 4
P
=
Y( Tf Ti )+( (K1Mi ^2) /Hi
P
=
20928. 736644
Now putt hes ev al uei nequat i on1& findoutt hev al ueofHf
R. H. S
K1mf ²
=
87505914423
L. H. S
Hf ³ +Hf ² P
=
87500000000
L. H. Sshoul dbeequalt oR. H. Sbychangi ngt heval ueofHf
Hf HenceFi nalt ensi on ( Hf )
=
1955. 404964 N
=
1955. 404964
N
3 Conduct orMaxi mum sagatfinalt ensi on@ 85 ⁰ C
AsperI EEE Wher e Ds m ‾ g L H
= = = = =
Conduct orsag Massbyuni tl engt h Gr avi t at i oncons t ant Consuct orspanl engt h i st het ensi oni nt he conduct orundera gi ve nt emp.@ 85⁰ C
HenceMaxsagatfinalt ensi on( Ds)
1. 145 9. 82 26. 5 1955. 4
0. 50
kg/m m/s2 m N
m
4 Conduct orMi n.sagati ni t i alt ensi on@ 30 ⁰ C
AsperI EEE Wher e Ds m ‾ g L
= = = =
Conduct orsag Massbyuni tl engt h Gr avi t at i oncons t ant Consuct orspanl engt h
1. 145 9. 82 26. 5
kg/m m/s2 m
H
=
i st het ensi oni nt he conduct orundera gi ve nt emp mp.@ 30⁰ C
