Sweeden_technical Guide Lines _design of 400 OHTL

8/13/2019 Sweeden_technical Guide Lines _design of 400 OHTL

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TECHNICAL GUIDELINESFOR 400 kV AND 220 kV OH-LINES

SvK TR 5:104 CONDUCTORS14 September, 2000

4 CONDUCTORS


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Contents Page

4.1 REFERENCES ................................................................................................................. 5

4.2 SCOPE............................................................................................................................. 7

4.3 DEFINITIONS................................................................................................................... 7Creep................................................................................................................................ 7

4.4 DESCRIPTION................................................................................................................. 74.4.1 Steel wire conductors .................................................................................................... 7

4.4.2 Aluminium conductors .................................................................................................. 7

4.4.3 Aluminium conductors steel reinforced ...................................................................... 7

4.4.4 Conductors made from aluminium alloy...................................................................... 74.4.2.1 AlMgSi conductors............................................................................................................ 74.4.2.2 Al 59 conductors............................................................................................................... 7

4.5 REQUIREMENTS ............................................................................................................ 8

4.5.1 Steel wire conductors .................................................................................................... 8

4.5.1.1 Wire .................................................................................................................................. 84.5.1.2 Dimensions....................................................................................................................... 84.5.1.3 Design .............................................................................................................................. 84.5.1.4 Breaking load.................................................................................................................... 84.5.1.5 Resistance........................................................................................................................ 8

4.5.2 Aluminium conductor .................................................................................................... 84.5.2.1 Wire .................................................................................................................................. 84.5.2.2 Dimensions....................................................................................................................... 84.5.2.3 Design .............................................................................................................................. 84.5.2.4 Breaking load.................................................................................................................... 84.5.2.5 Resistance........................................................................................................................ 84.5.2.6 Greasing........................................................................................................................... 8

4.5.3 Aluminium conductors steel reinforced ...................................................................... 94.5.3.1 Wire .................................................................................................................................. 94.5.3.2 Dimensions....................................................................................................................... 94.5.3.3 Design .............................................................................................................................. 94.5.3.4 Breaking load.................................................................................................................... 94.5.3.5 Resistance........................................................................................................................ 94.5.3.6 Greasing........................................................................................................................... 9

4.5.4 AlMgSi conductor........................................................................................................... 94.5.4.1 Wire .................................................................................................................................. 94.5.4.2 Dimensions....................................................................................................................... 94.5.4.3 Design .............................................................................................................................. 94.5.4.4 Breaking load.................................................................................................................. 104.5.4.5 Resistance...................................................................................................................... 104.5.4.6 Greasing......................................................................................................................... 10

4.5.5 Al 59 conductor ............................................................................................................ 104.5.5.1 Wire ................................................................................................................................ 10


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4.5.5.2 Dimensions..................................................................................................................... 104.5.5.3 Design ............................................................................................................................ 104.5.5.4 Breaking load.................................................................................................................. 104.5.5.5 Resistance...................................................................................................................... 104.5.5.6 Greasing......................................................................................................................... 10

4.6 TYPE TEST.................................................................................................................... 10

4.6.1 General .......................................................................................................................... 10

4.6.2 Joints in wires before stranding ................................................................................. 11

4.6.3 Stress strain curve .................................................................................................... 114.6.4 Breaking load................................................................................................................ 11

4.6.5 Creep ............................................................................................................................. 11

4.7 SAMPLE TEST .............................................................................................................. 11

4.7.1 General .......................................................................................................................... 11

4.7.2 Tests on wires before stranding................................................................................. 12

4.7.3 Cross-sectional area .................................................................................................... 12

4.7.4 Conductor diameter ..................................................................................................... 12

4.7.5 Mass per unit length .................................................................................................... 124.7.6 Breaking load of wires obtained from conductors ................................................... 12

4.7.7 Surface condition ......................................................................................................... 12

4.7.8 Lay ratio and direction of lay ...................................................................................... 12

4.7.9 Grease content ............................................................................................................. 12

4.8 CERTIFICATE OF DELIVERY....................................................................................... 12

4.8.1 General .......................................................................................................................... 12

4.8.2 Documentation ............................................................................................................. 134.8.2.1 Assembly drawing .......................................................................................................... 134.8.2.2 List of material ................................................................................................................ 134.8.2.3 Manufacturing process................................................................................................... 134.8.2.4 Quality system ................................................................................................................ 134.8.2.5 Type test report .............................................................................................................. 13

4.9 INSTALLATION ............................................................................................................. 13

TABLES 15

Table 1 Steel wire conductors .................................................................................................. 15

Table 2 Aluminium conductors ................................................................................................ 16

Table 3 Aluminium conductors steel reinforced (A1/S1A)..................................................... 17

Table 4 AlMgSi conductors....................................................................................................... 18

Table 5 Al 59-Conductors.......................................................................................................... 19

FIGURES ........................................................................................................................................ 20


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Figure 1 Steel wire conductors .................................................................................................. 20Figure 1a Phase conductors........................................................................................................... 20Figure 1b Shield wires .................................................................................................................... 20

Figure 2 Aluminium, aluminium alloy conductors ................................................................... 20

Figure 3 Aluminium conductors steel reinforced .................................................................... 21Figure 3a Phase conductors........................................................................................................... 21Figure 3b Shield wires .................................................................................................................... 21

Figure 4 Greased Conductors.................................................................................................... 22


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4.1 REFERENCES- Note that standards, regulations etc. which are referred to in these guidelines

are subject to continuous change and can be withdrawn, revised or replaced.The contractor shall immediately inform the client of such changes.

IEC 1089 Round wire concentric lay overhead electrical strandedconductors

SS IEC 888 Frzinkad stltrd fr linor fr friledningar

SS IEC 889 Hrddragen aluminiumtrd fr linor fr friledningar

SS ISO 5455 Ritningsregler - Skalor

SS ISO 9002 Kvalitetssystem - Krav vid produktion och installation

SS 11 23 18 Aluminium och stl - Linor fr friledning - Kontinuerligkrypprovning

SS 424 01 65 Berkning av kortslutningsstrmmars mekaniska och termiskaverkningar

SS 424 08 02 Aluminiumlinor fr friledningar

SS 424 08 06 Linor av hrd frzinkad stltrd fr luftledningar - Fe140-linor

SS 424 08 07 Stlaluminiumlinor fr friledningar - FeAl-linor

SS 424 08 11 Trd av aluminiumlegering fr linor fr friledningar -AlMgSi-trd

SS 424 08 12 Linor av aluminiumlegering fr friledningar - AlMgSi-linor

SS 424 08 13 Trd av aluminiumlegering fr linor fr friledningar - Al 59-trd

SS 424 08 14 Linor av aluminiumlegering fr friledningar - Al 59-linor

SS 424 08 50 Infettningsmedel fr linor av aluminium och stl fr friledningar


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SvK TR 5:107 Tekniska bestmmelser - Skarvar

SvK TR 5:109 Tekniska bestmmelser - Vibrationsdmpare

SvK TR 5:113 Teknisk bestmmelse - Jordningar


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4.2 SCOPEThese guidelines are applicable to steel, aluminium, steel reinforced aluminiumand aluminium alloy conductors for overhead lines and comprise design andtesting.

The intention of the specification is to guarantee satisfactory performance of theconductors during the calculated technical lifetime of the overhead line.

For conductors to be buried underground refer to SvK TR 5:113.

4.3 DEFINITIONSTechnical terms and definitions used in these guidelines:

CreepPermanent elongation under constant stress over a period of time.

4.4 DESCRIPTION

4.4.1 STEEL WIRE CONDUCTORS

Conductors consisting of several layers of wires made from hot-dip galvanisedsteel. See figures 1a and 1b.

4.4.2 ALUMINIUM CONDUCTORS

Conductors consisting of several layers of wires made from aluminium. See figure2.

4.4.3 ALUMINIUM CONDUCTORS STEEL REINFORCEDConductors having a core consisting of a wire, or several layers of wires, madefrom hot-dip galvanised steel and with one or several outer layers of wires madefrom aluminium. See figures 3a and 3b.

4.4.4 CONDUCTORS MADE FROM ALUMINIUM ALLOY

4.4.2.1 AlMgSi conductorsConductors consisting of several layers of wires made from AlMgSi. See figure 2.

4.4.2.2 Al 59 conductorsConductors consisting of several layers of wires made from Al 59. See figure 2.


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4.5 REQUIREMENTS

4.5.1 STEEL WIRE CONDUCTORS

4.5.1.1 WireWires shall be manufactured from high strength steel in accordance with SwedishStandard SS IEC 888, and hot-dip galvanised to Class 1.

4.5.1.2 DimensionsConductors shall have measurements in accordance with Swedish Standard SS424 08 06, see table 1.

4.5.1.3 DesignConductors shall comply with the requirements of IEC 1089.

4.5.1.4 Breaking loadConductors shall comply with the breaking load requirements of table 1.

4.5.1.5 ResistanceConductors shall comply with the resistance requirements of table 1.

4.5.2 ALUMINIUM CONDUCTOR

4.5.2.1 WireWires shall be manufactured in accordance with Swedish Standard SS IEC 889.





4.5.2.6 GreasingWhen greasing of conductors is requested they shall be greased in accordance withIEC 1089 Annexure C, Case 4, see figure 4.


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Grease shall comply with the requirements of Swedish Standard SS 424 08 50.

4.5.3 ALUMINIUM CONDUCTORS STEEL REINFORCED

4.5.3.1 WireSteel wires shall be manufactured from regular steel in accordance with SwedishStandard SS IEC 888, and hot-dip galvanised to Class 1.

Aluminium wires shall be manufactured in accordance with Swedish Standard SSIEC 889.


4.5.3.3 DesignConductors shall comply with the requirements of IEC 1089. A core consisting of only one steel wire shall have no joints.



4.5.3.6 GreasingWhen greasing of the steel core of conductors is requested it shall be greased inaccordance with IEC 1089 Annexure C, Case 4, see figure 4.


4.5.4 ALMGSI CONDUCTOR

4.5.4.1 WireWires shall be manufactured in accordance with Swedish Standard SS 424 08 11




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4.5.4.6 GreasingWhen greasing of conductors is requested they shall be greased in accordance with

IEC 1089 Annexure C, Case 4, see figure 4.Grease shall comply with the requirements of Swedish Standard SS 424 08 50.

4.5.5 AL 59 CONDUCTOR

4.5.5.1 WireWires shall be manufactured in accordance with Swedish Standard SS 424 08 13.




4.5.5.5 Resistance

Conductors shall comply with the resistance requirements of table 5.

4.5.5.6 GreasingWhen greasing of conductors is requested they shall be greased in accordance withIEC 1089 Annexure C, Case 4, see figure 4.


4.6 TYPE TEST

4.6.1 GENERALType tests are to be performed in accordance with IEC 1089 as stated in clauses4.6.2 4.6.4 below. In addition for conductors made from Al 59 tests inaccordance with clause 4.6.5 shall be performed.


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4.6.2 JOINTS IN WIRES BEFORE STRANDING

This test is to be performed in accordance with IEC 1089 clause 6.5.4

4.6.3 STRESS STRAIN CURVE

This test is to be performed in accordance with IEC 1089 Annexure B. Allmeasurements taken shall be recorded and submitted to the client. The stress-strain curves stipulated in IEC 1089 Annexure B and their formulae shall beincluded. The stress-strain curve shall be obtained by drawing a third degree curvethrough the points of reading. This is an additional requirement to IEC 1089.

4.6.4 BREAKING LOAD

This test is to be performed in accordance with IEC 1089 clause 6.5.3.

4.6.5 CREEP

This test is to be performed in accordance with Swedish Standard SS 11 23 18 the parameters being in accordance with Swedish Standard SS 424 08 14 clause 6.The creep is to be measured at intervals of time evenly logarithmically distributedover the entire testing time. All readings of temperature, strain and time are to beshown in tabular form. The linear regression is to be calculated for all themeasured strain readings. It shall also be calculated for the measured strainreadings from 50 hours after start to the end of the test.

When calculating the linear regression, the value z shall be added to every readingsuch that, at the time t= 87600 hours (10 years), the creep will be equal for thetwo regression curves. Calculated values for k and b , in addition to the calculatedcreep from fifty hour to ten years, are to be presented to the client.

The creep shall be calculated according to the formula:bk t *10

where = conductor creep during time t k = point of intersection between the line and the y-axisb = line slopet = time for which creep is to be calculated

4.7 SAMPLE TEST

4.7.1 GENERAL

The sample test is to be performed in accordance with IEC 1089 clause 6.2.2.


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4.7.2 TESTS ON WIRES BEFORE STRANDING

The tests shall show that wires comply with the requirements of clauses 4.5.1.1,4.5.2.1, 4.5.3.1, 4.5.4.1 and 4.5.5.1.

4.7.3 CROSS-SECTIONAL AREA


4.7.4 CONDUCTOR DIAMETER


4.7.5 MASS PER UNIT LENGTH


4.7.6 BREAKING LOAD OF WIRES OBTAINED FROM CONDUCTORS


4.7.7 SURFACE CONDITIONThe test is to be performed in accordance with IEC 1089 clause 6.6.5.

4.7.8 LAY RATIO AND DIRECTION OF LAY


4.7.9 GREASE CONTENT


4.8 CERTIFICATE OF DELIVERY

4.8.1 GENERAL

The client shall, according to these guidelines, approve the conductor beforedelivery. For approval the manufacturer shall show that the conductor conformswith the guidelines.

The manufacturer shall provide documentation in accordance with clauses 4.8.2.1-4.8.2.5 for approval.

The approval of drawings by the client does not release the manufacturer from hisobligation regarding the conductor complying with the guidelines.


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All documentation shall be written in Swedish or English.

4.8.2 DOCUMENTATION

A summary of documentation requirements is contained in chapter 14.

4.8.2.1 Assembly drawing

The assembly drawing is to have an appropriate scale in accordance with SwedishStandard SS ISO 5455. On the drawing shall be given:

Type

Cross-sectional area and stranding

Mass per km

Resistance

Conductor length per drum

4.8.2.2 List of materialDescription of material for included parts.

4.8.2.3 Manufacturing processDescription of the manufacturing process

4.8.2.4 Quality systemQuality system in accordance with ISO 9002.

4.8.2.5 Type test reportType test report in accordance with clause 4.6

4.9 INSTALLATIONConductors shall be run-out under tension using pilot wires.

The conductor shall be clamped-in within 48 hours after it has been sagged.Vibration dampers in accordance with SvK TR 5:109 Vibration dampers, shall beinstalled if this cannot be done

Sheaves of running out blocks for the conductor shall be rubber lined with adiameter at least 15 times the conductor diameter.


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Joints for conductors shall be installed in accordance with SvK TR 5:107. Theconductor ends shall be free from dirt and undamaged when the joint is installed.Conductor adjacent to the joint shall not have protruding strands.


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TABLES

TABLE 1 STEEL WIRE CONDUCTORS

Diameter Calculated

Designationand Number of Wire Con-

ductorMass

Breakingload

Direct currentresistance 1)

Faultcurrent 2)

Cross-sectional area

wires mm mm kg/km kN /km kA

52 7 3,08 9,24 408 73,54 2,503 3,568 7 3,52 10,6 532 94,01 1,917 4,689 7 4,02 12,1 694 122,6 1,469 6,0

105 7 4,36 13,1 817 144,2 1,249 7,0142 19 3,08 15,4 1110 199,6 0,9254 9,5185 19 3,52 17,6 1450 255,2 0,7085 12,5

241 19 4,02 20,1 1890 332,8 0,5432 16,3

284 19 4,36 21,8 2220 391,5 0,4618 19,1

1) The direct current resistance is calculated from the mean value 130.0 n m(13,3% IACS) of the individual wires

2) The fault current is the calculated effective value with a duration of onesecond at an initial conductor temperature of +30 C and a final temperature of +300 C.


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TABLE 2 ALUMINIUM CONDUCTORS

Diameter Calculated Continuous Fault-

Designation and Number

of Wire Con-

ductorMass

Breakingload

Direct currentresistance2 )

Load

Current3 )

Current4 )

Cross-sectional

area

Wires mm mm kg/km kN /km A kA

454 61 3,08 27,7 1250 74,99 0,06304 406 44,2593 61 3,52 31,7 1640 94,98 0,04826 433 57,8

774 61 4,02 36,2 2140 123,9 0,03700 483 75,4910 61 4,36 39,2 2510 145,7 0,03146 519 88,6

2) The direct current resistance is calculated from the mean value 28.035 n m(61.5 % IACS) of the individual wires

3) The continuous load current is calculated with a conductor temperature of +50C, an ambient temperature of +30 C, 50 Hz frequency, 0.00403 resistivity

temperature coefficient, 0.7 emission factor, 0.9 absorption factor, 0.6 m/swind velocity and at a latitude of 60 (N).



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TABLE 3 ALUMINIUM CONDUCTORS STEEL REINFORCED (A1/S1A)

Diameter Calculated DirectCon-

tinuous Fault

Designation and

Number of wires Wire Core Con-

ductorMass

Breakingload

currentresistance 1)

loadcurr-ent 2)

Current 3)

Al Fe

Cross-sectional

area

Al Fe mm mm Mm mm kg/km kN /km A kA

Phase conductors

454 54 7 3,08 3,08 9,24 27,7 1520 123,8 0,07130 381 39,0 3)593 54 7 3,52 3,52 10,6 31,7 1980 159,0 0,05459 407 51,1 3)

774 54 7 4,02 4,02 12,1 36,2 2590 207,4 0,04186 460 66,7 3)910 54 19 4,36 2,62 13,1 39,3 3030 245,8 0,03558 493 78,2 3)

Shieldwire

142 12 7 3,08 3,08 9,24 15,4 654 72,12 0,3205 9,4 4)

241 12 7 4,02 4,02 12,1 20,1 1115 122,1 0,1881 16,0 4)

319 32 7 3,16 3,52 10,6 23,2 1225 116,3 0,1143 26,4 4)

1) The direct current resistance is calculated from the mean value 28.035 n m(61.5 % IACS) of the individual wires

2) The continuous load current is calculated with a conductor temperature of +50C , an ambient temperature of +30 C, 50 Hz frequency, 0.00403 resistivity

temperature coefficient, 0.7 emission factor, 0.9 absorption factor, 0.6 m/swind velocity and at a latitude of 60 (N).


4) The fault current is the calculated effective value with a duration of onesecond at an initial shield wire temperature of +30 C and a final temperatureof +200 C.


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TABLE 4 ALMGSI CONDUCTORS

Diameter Calculated Continuous Fault

Designation and

Cross-

sectional

Number

Of

Wire Con-ductor

Mass Breaking

load

Directcurrent

resistance 1)

load current 2) current 3)

Area Wires mm mm kg/km kN /km

A KA

454 61 3,08 27,7 1250 125,0 0,06745 393 43,8593 61 3,52 31,7 1640 157,3 0,05164 419 57,1

774 61 4,02 36,2 2140 197,4 0,03960 471 74,5910 61 4,36 39,2 2510 232,2 0,03366 503 87,7

1) The direct current resistance is calculated from the mean value 30.000 n m(57.5 % IACS) of the individual wires.

2)The continuous load current is calculated with a conductor temperature of +50C, an ambient temperature of +30 C, 50 Hz frequency, 0.0038 resistivitytemperature coefficient, 0.7 emission factor, 0.9 absorption factor, 0.6 m/swind velocity and at a latitude of 60 (N) .



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TABLE 5 AL 59-CONDUCTORS

Diameter Calculated Continuous Fault

Desig-nation

andCross-

sectional

Number

of

Wire Con-ductor

Mass Breaking

load

Directcurrent

resistance 1)

load current 2) Current 3)

area wires mm mm kg/km kN /km A KA

454 61 3,08 27,7 1250 113,6 0,06532 399 44,1593 61 3,52 31,7 1640 142,5 0,05001 426 57,6

774 61 4,02 36,2 2140 178,1 0,03834 478 75,1910 61 4,36 39,2 2510 209,5 0,03260 511 88,3

1) The direct current resistance is calculated from the mean value 29.050 n m(59.4 % IACS) of the individual wires.

2) The continuous load current is calculated with a conductor temperature of +50

C, an ambient temperature of +30 C, 50 Hz frequency, 0.0039 resistivitytemperature coefficient, 0.7 emission factor, 0.9 absorption factor, 0.6 m/swind velocity and at a latitude of 60 (N).

The fault current is the calculated effective value with a duration of one second atan initial conductor temperature of +50 C and a final temperature of +200 C.


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FIGURES

FIGURE 1 STEEL WIRE CONDUCTORS

7 wires 19 wires

Figure 1a Phase conductors

7 wires 19 wires

Figure 1b Shieldwires

FIGURE 2 ALUMINIUM, ALUMINIUM ALLOY CONDUCTORS

61 wires


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FIGURE 3 ALUMINIUM CONDUCTORS STEEL REINFORCED

54/7 wires 54/19 wires

Figure 3a Phase conductors

12/7 wires 32/7 wires

Figure 3b Shieldwires


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FIGURE 4 GREASED CONDUCTORS

Case 1 Case 4


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Sweeden_technical Guide Lines _design of 400 OHTL

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