دورة عن تصميم الخطوط الهوائية جهد 11 ك ف

KHALDA PETROLEUM COMPANY 11 KV OHTL AT KAHRAMAN OIL FACILITY

KHALDA CONCESSION MAP Jf 31 30’

M E D I T E R R A N E A N

Development Lease Additions

Je

S E A

MATRUH

Khalda Offset New Concession Apache New Concession

Jd

Oil Pipline Gas Pipline Cond. Pipline GAS OIL FIELDS FIELDS GAS

Jb

Ja

RAS KANAYES

RAS EL HEKMA

OBAIYED

50 Km/32” MATRUH ALEXANDRITE UMBARKA

Ij

SHUSHAN-C

MATRUH MIHOS

KHALDA OFFSET

REH

TAREK

IMHOTEP

WEST KALABSHA

UMBARKA

KAHRAMAN

ATOUN

KAHRAMAN S

Ih

FALAK

QASR

WAHA-1

30 30’

MUNTAG A

SAFIR N.

SHROUK

SAFIR NADER

SHROUK E.

KHALDA

ANDALUS-1 FAGHOUR-5

BUCHIS

Ie

KHALDA OFFSET

FAGHOUR

Id

WEST KANAYES

NEITH HEQET

KHALDA OFFSET

Ic

QA

Ib 26 00’

7

8

9

N. ALAMEIN

EL-AMERYA

HAYAT-YASSER

OZORIS

SHUSHAN-A KALABSHA

If

AKIK TANZANITE

232K m/34 ”

KENZ

KHALDA OFFSET

KHNUM-1

A

KHALDA OFFSET

SALAM N SALAM

SYRAH

SELKI T

Ig

EL HAMR 6” 166 Km/1

MELEIHA

TUT

60 Km/12”

WEST MEDITERRANEAN

KHALDA

HATHOR SHUSHAN-B KHEPRI - SETHOS RENPET

6”

Ii

IMHOTEP

SHAMS

Daba a

NORTH TAREK

/ Km 17

37 K m/2 2”

PLANT

31 00’

RAS KANAYES

1.6K m/1 2”

Jc

10

11

A TT

RA

DE

E PR

13

14

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N IO

0

27 00’

12

SS

Km 50

28 00’

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OHTL HESTORY IN KPC WOODEN POLES WOODEN CROSS ARMS WOODEN TRANSFORMER BANK NORMAL PIN INSULATORS

WOODEN POLES & CROSS ARM

SCOPE AND GENERAL REQUIREMENTS The purpose of this project is to provide the required electrical power to the oil wells at Kahrman field of Khalda Petroleum Co. O.H.T.Line will be fed from one or two gas turbines each 5.5 MW , 11 kV , 50 Hz The design and engineering of the O.H.T.L shall satisfy all requirements of the local and national authorities Codes & Standers.

Main Hardware OHTL Materials Steel Poles Hot Dip Galvanized Cross Arms Insulators ACSR Wire Conductors Stay Guys Cut Out Fuses Surge Arrestors Transformer Banks Accessories

Steel Poles Hot Dip Galvanized Type A (Normal Type) Type B (Tr. Bank) Type C (Road Crossing) Type D (H-Pole) T - Poles Type

Steel Pole Type A & B

Steel Poles Type C & D

T - Pole

FABRECATION DETAIL

TRANSFORMER BANK

STEEL CROSS ARM

HOT DIP GALVANIZED STEEL CROSS ARM BOX SECTION TYPE

PIN TYPE INSULATOR The insulation system for the transmission line shall be of aero-form type antipollution insulators and shall have values in excess of the leakage distance, 50 Hz wet, and Critical Impulse flashover specified in insulators specifications.

PIN TYPE INSULATORS

STEEL PIN

ACSR CONDUCTORS Conductors are selected to be ACSR DOG type(118.5 mm2) ( BS 215 part 2 code word ), with span (75 m), wind velocity (120 km/h) for the main 3 – Phase Line Conductor is Selected to be ACSR RABBIT type for the 4th wire to be used as a Ground (61.7 mm2) ( BS 215 part 2 code word )

Conductor specifications Type

ACSR

Code Word

DOG

Nominal Cross Section ,mm2

118.5

Nominal aluminium area, mm2

105

Nominal steel area, mm2

13.5

Number of aluminium wires

6

Number of steel wires

7

Diameter of aluminium wires , mm

4.72

Diameter of steel wires, mm

1.57

Overall Diameter, mm

14.15

Weight of Conductor , kg/km

394

Ultimate tensile strength , kN

32.7

Modules of elasticity , N/ mm2 Coefficient of thermal expansion ,per oC

75511 0.0000198

Wind pressure on conductor, N/ m2

775

Maximum conductor temperature , oC

75

Span , m

100

STAY GUYS Guys are installed to balance line tensions and are therefore appropriate where lines begin, end, or where lines change direction.

Most installations utilize down guys, wherein the guy wire is led away from the pole at a 45 degree angle down to an anchor. Head guys will be provided at heavily loaded corners to reduce tension in a corner span and strain on the corner pole. Dead-end guys will be provided in long straight lines

CUTOUT FUSE & SWITCH Medium-voltage fuses and cutouts shall comply with NEMA SG 2 and shall be of the open type construction rated 15 kV and of the ultra-heavy duty type

CUTOUT FUSE

FUSE LINK & KNIF SWITCH

Lightning Performance and Grounding All transmission structures will be individually grounded through a dedicated earth driven grounding system composed of ground rods and / or buried counterpoise.

The maximum acceptable resistance measurement of this grounding system is 25 Ohms. These resistance requirements are to assure acceptable lightning performance on the line as well as provide for the safe grounding of the line by construction and maintenance forces.

To assure acceptable lightning performance, a limited application of transmission lines arresters will be utilized.

SURG ARRESTERS

ACCESSORIES & TOOLS TOP TIE HIGH VOLTAGE SPECIAL TOOLS

SPECIAL TOOLS

ACSR CONDUCTOR W/ARMOR ROD

TOP TIE

ACCESSORIES

HARD WARE MATERIALS