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 HV Electricity Overhead Distribution Line:Tension and Sag Calculations Were Made Depending On the Wind Speed (m/sec) Measured During Conductor Pulling in the Field and the Ambient Temperature.

(Coductor State Change Equation)

HV ELECTRICITY OVERHEAD DISTRIBUTION LINE

STATE CHANGE EQUATION

Fieldwork Conductor Sag Tension Calculation

Project Conductor Sag Table
 State Change Equation(Tn,ar,Pr,Pb,0C)

Calculation of ag, aw, ar angle Table

Up Lift Control

Section 4

BÖLÜM 2
Kısım 1
Kısım 2
Kısım 3
Kısım 4

BÖLÜM 3
Kısım 1
Kısım 2
Kısım 3
Kısım 4
Kısım 5

BÖLÜM 4
Kısım 1
Kısım 2
Kısım 3
Kısım 4
Kısım 5
Kısım 6

 

 Pole Type : Steel      Concrete    Measured Anemometer  Wind Speed (m/sn)   km/h 29,12 m/sn   m/sn  q=53 (kg/m2)
 Ice Load Zone    Pole Span Length (m)  
 t1Temparature (0C)    t2 Temparature (0C)  
 H1 Tension (kg)    H2 Tension (kg)  653,28
 A Cross-Section (mm2)    A Cross-Section(mm2)  
 S Span Length ar(m)    S Span Length (m)  
 W1 Conductor  Weight (kg/m)    W2 Conductor Weight (kg/m)  0,8186  
 E Final Modulus of Elasticity Es (kg/mm2)    (Initial-Final) Modulus of Elasticity Es (kg/mm2)  
 α Coefficient of Thermal Expansion  β (1/0C)    α Coefficient of Thermal Expansion  β (1/0C)  

* Here, the ACTUAL TENSION and SAG Calculations of the conductors are given by measuring and entering the Ambient Temperature (t2) and Wind Speed values (m/sec) during OHL conductor tension in the FIELD. (If the Wind Speed is entered as a km/h value in the km/h section, the m/sec value is automatically calculated. This value must be entered in the m/sec section.)

*After the project is selected as Iron or Concrete pole, the Ice Load Zone is selected.

*The ar value calculated between the poles for which tension will be calculated is entered in the 1st part of the table.

*Distance between two poles for which Sag calculation will be made must be enter table second section

*The ar calculation can be checked by entering the pole distances between the two stopper poles in Table 1

*Table 2 contains the ACTUAL tension (pulling power) and Sag values ​​calculated depending on the distance (m), temperature (0C) and wind speed (m/sec) between two poles.

                                                                                             Coductor State Change Equation

                                                             

                                                                                                  Ruling Span ar

                                                                                                                         

S1 S2 S3 S4 S5 S6 S7 S8

ar
                 236,55

                                                        Tablo 1

 

Ruling Span ar=350 m
Temparature 0C -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6
Tension (kg)  653,28  652,54  651,8  651,07  650,34  649,61  648,88  648,15  647,43  646,71  645,99  645,28
Pole Span= 350 m
Sag (m)   19,19  19,21  19,23  19,25  19,27  19,3  19,32  19,34  19,36  19,38  19,4  19,43

                                                         Tablo 2

Ruling Span ar=350 m
Temparature 0C +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18
Tension (kg)  644,56  643,85  643,14  642,44  641,73  641,03  640,33  639,63  638,93  638,24  637,55  636,86
Pole Span= 350 m
Sag (m)   19,45  19,47  19,49  19,51  19,53  19,55  19,58  19,6  19,62  19,64  19,66  19,68

 

 Ruling Span ar=350 m
Temparature 0C +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 +30
Tension (kg)  636,17  635,49  634,8  634,12  633,44  632,77  632,09  631,42  630,75  630,08  629,41  628,75
Pole Span= 350 m
Sag (m)   19,7  19,72  19,75  19,77  19,79  19,81  19,83  19,85  19,87  19,89  19,92  19,94

 

 aort=350 m
Temparature 0C +31 +32 +33 +34 +35 +36 +37 +38 +39 +40 +41 +42
Tension (kg)  628,09  627,43  626,77  626,11  625,46  624,8  624,15  623,5  622,86  622,21  621,57  620,93
Pole Span= 350 m
Sag (m)   19,96  19,98  20  20,02  20,04  20,06  20,08  20,1  20,12  20,15  20,17  20,19

 

 aort=350 m
Temparature 0C +43 +44 +45 +46 +47 +48 +49 +50 +51 +52 +53 +54
Tension (kg)  620,29  619,65  619,02  618,38  617,75  617,12  616,49  615,87  615,24  614,62  614  613,38
Pole Span= 350 m
Sag (m)   20,21  20,23  20,25  20,27  20,29  20,31  20,33  20,35  20,37  20,39  20,42  20,44