Dslp Calculation by Vikas

DOCUMENT COVER SHEET

Direct Stroke Lightning Protection Calculation 400 / 0 / !!kV "n#ra$ura% Su&'tation

0 Re()

27.11.12 Date

De'cri$tion

PREP*RED +,

Checke# +-

Western Uttar Pradesh Power Transission Cor!oration "iited (e)ha -n)ineerin) and Inrastructure "iited

*$$ro(e# +#$%& 2nd Floor& Adit'a (e)a (all& Indira!ura& *ha+ia,ad 201010& 7th loor Tower c Buildin) /o. 10 "F C',er cit' !hase$II *ur)aon India

PRO.ECT 

35/400 kV "ntra 6 State Tran'%i''ion Tran'%i''ion Pro7ect)

PREP*RED +, CHEC8ED +, *PPROVED +,

N*ME

D*TE

VIK

27.11.12

DOCUMENT ST*TUS For A!!roal

DOCUMENT T"TLE

SHEET S"E

irect #troe "i)htnin) Protection Calculation

*4

DOCUMENT NO)

NO) O1 SHEETS

For Construction

As Built

COVER 2 03

400/0/!!kV "n#ra$ura% Su&'tation

Direct 'troke lightning $rotection Calculation'

Su&'tation Na%e

Docu%ent Na%e

Docu%ent No)

T*+LE O1 CONTENTS

CLAUSE NO.

DESCRIPTION

SHEET NO.

1.0

PU3P4#-

2

2.0

C4-# 5 #TA/A3#

2

%.0

#I6I/* C3IT-3IA

2

.0

F43(U"A- U#- F43 CA"CU"ATI4/#

%

8.0

CALCULATION

4

9.0

CONCLUSION

6

Sheet No. 1 of 6

1.0

400/0/!! 8V "n#ra$ura% Su&'tation


Su&'tation Na%e

Docu%ent Na%e

Docu%ent No)

PURPOSE: The 'r'o%e of thi% +al+lation i% to &eter*ine the height of Lightning $a%t% for 4../00./11 -V In&ra'ra* Sb%tation

2.0

CODES & STANDARDS: a)

High Voltage Engineering by " Prof!ae#ig"

3.0

SIZING CRITERIA:

3.1

The height of Lightning $a%t% &e'en& on the

3.2 a) b)

a)

Height of the e(i'*ent to be 'rote+te&

b)

Area to be 'rote+te&

Data fo !00"# S$%th'a(: Height of Lightning *a%t Height of the li#e'art to be 'rote+te&,

h

!0 )

h*

10 )

h

!0 )

h*

6)

h

!0 )

h*

!)

All the height% ha% ta-en fro* the 'linth le#el 3.2 a) b)

Data fo 220"# S$%th'a(: Height of Lightning *a%t Height of the li#e'art to be 'rote+te&,

All the height% ha% ta-en fro* the 'linth le#el 3.2 a) b)

Data fo 33"# S$%th'a(: Height of Lightning *a%t Height of the li#e'art to be 'rote+te&,

All the height% ha% ta-en fro* the 'linth le#el SHEET NO. 2 O+ 6



Su&'tation Na%e

Docu%ent Na%e

!.0

+o),-ae Ue(:

A

Prote+ti#e ra&i% 2r3) , 1

If  h3 5 20/1)h an& h 7 1.*,8

2

If  h3 5 20/1)h an& h 5 1.*,8

3

Co8effi+ient for the Lightning $a%t Height

(

r x=1 . 5 h× 1−

h x 0.8h

(

r x=1 . 5 h× 1−

P

)

× P

h x 0.8h

5. 5/

)

m

m

)

√ h

!

Allo9able &i%tan+e bet9een t9o L

%$S

: 3 ha 3 P *

)

/

Allo9able &iagonal &i%tan+e bet9een t9o L

%$D

; 3 ha 3 P *

)



Docu%ent No)

ha h 8 h3 *

$i&9ay 'oint 'rote+ti#e Height 2ho) an& $i&9ay Point Prote+ti#e =i%tan+e 2b3)



   7 P  

h0  h  

1

2

3

!

If h3 5 20/1)ho an& ho 7 1. * ,8

If h3 5 20/1)ho an& ho 5 1. * ,8

If h3 7 20/1)ho an& ho 5 1. * ,8

(

b x =1 . 5 ho × 1−

(

b x =1. 5 ho × 1−

S

h x 0 . 8 ho

h x 0 . 8 ho

( )

b x =0 . 7 5 h o × 1 −

) )

)

× P

)

)

h x ho

)



Su&'tation Na%e

Docu%ent Na%e

SHEET NO. 3 O+ 6

Docu%ent No)

/.0 a



Su&'tation Na%e

Docu%ent Na%e

Docu%ent No)

Ca-,-at%o +o L1 Height of the L$

h

4.

*

Height to be 'rote+te&

h3

>.

*

Prote+ti#e ra&i%

P

(

r x =1 . 5 h× 1−



h x 0.8h

)

× P

m

5.5 / Öh

5.5/ Ö40

0.870

(

r x= 1 . 5 h× 1−

Prote+ti#e ra&i%



h x 0.8h

)

× P

m

>? @ 4.22>82>./.; 3 4.))3.;:. 1?;;:?

*

Hen+e 'rote+tion area of L$> +o#er% the 4.. -V Sb%tation area 9hi+h ha#e to be 'rote+te&

4

L2 & L3 Height of the L$

h

4.

*


h3

6

*

Prote+ti#e ra&i%

P

(

r x =1 . 5 h× 1−



5.5 / Öh

5.5/ Ö40

0.870

h x 0.8h

)

× P

m



Su&'tation Na%e

Docu%ent Na%e

SHEET NO. ! O+ 6

Docu%ent No)



Su&'tation Na%e

Docu%ent Na%e

(

r x= 1 . 5 h× 1−

Prote+ti#e ra&i%



Docu%ent No)

h x 0.8h

)

× P

m

>? @ 4.22>826/.; 3 4.))3.;:. 404>0?

*

Hen+e 'rote+tion area of L$>  L$0 +o#er% the 00 . -V Sb%tation area 9hi+h ha#e to be 'rote+te&



+o L! Height of the L$

h

4.

*


h3

?

*

Prote+ti#e ra&i%

P

(

r x =1 . 5 h× 1−



h x 0.8h

)

× P

m

5.5 / Öh

5.5/ Ö40

0.870

(

r x= 1 . 5 h× 1−

Prote+ti#e ra&i%



h x 0.8h

)

× P

m

>? @ 4.22>82?/.; 3 4.))3.;:. 44.41:?

*

Hen+e 'rote+tion area of L$4 +o#er% the 11 -V Sb%tation area 9hi+h ha#e to be 'rote+te&



Su&'tation Na%e

Docu%ent Na%e

SHEET NO. / O+ 6

Docu%ent No)



Su&'tation Na%e

Docu%ent Na%e

Docu%ent No)

Ta4-e S)No)

LM

Height o: LM ;%<

Height o: the e=ui$%ent to &e $rotecte#);%<

Ra#iu' o: LM ;%<

9

"(1 "(2 L$1 L$4

0 0 4. 4.

>. 6

1?;;:? 404>0?

6 ?

404>0? 44.41:?



3 !

Protection area

4.. -V S9it+hyar& area 00. -V S9it+hyar& area 00. -V S9it+hyar& area 11 -V S9it+hyar& area

Co-,%o Hen+e fro* the abo#e +al+late& 'rote+tion area of L$>L$0L$1 an& L$4 9e +an 'rote+t the in&ra'ra* %9it+h yar& area fro* the &ire+t lightning

SHEET NO. 6 O+ 6

Dslp Calculation by Vikas

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