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System Parameters Topographica
System Voltage 2.20E+02 kV Basic wind sp
System Frequency f 5.00E+01 Hz Terrain categ
Symmetrical Short Circuit Fault Current Ik 5.00E+04 A Reliability Lev
Three Phase automatic reclosing "FALSE" Equipment u
System x/r ratio x/r 3.00E+01 Equipment D
Phase to Phase Spacing am 4.00E+00 m Cantilever str
Size of Rigid Bus 4.00E+00 inch Equipment HDropper Conductor type "ACSR BER" Equipment Di
Height of equipment bus above ground Heqpt 5.90E+00 m
Equipment connection details Left Connection Right Connec
Connected Equipment Iso
Span Lenth L 7 m
Connection on main equipment E
Connection on other end equip. R
No. of spans 1.00E+00
Dropper Lenth (l) 0.00E+00
No. of subconductor in Dropper (Ns) 1.00E+00
Calculation Constants
Stress corresponding to the Yield point Rp0.2 1.70E+08 n/m2
Gravitational Constant g 9.81E+00 m/s2
Young's Modulus of Elasticity for Tube (E) E 6.89E+10
Rigid Bus Parameters Dropper Para
Outer Diameter of tube Do 1.14E-01 mm Conductor di
Inner Diameter of tube Di 9.69E-02 mm
Mass per unit lenth M 7.70E+00 kg/m
Wall thickness of the tube Sthk 1.00E-02 m
Wind force constants
Factor for ref. wind speed (Ko) Ko 1.38E+00
Risk Co-eff (K1) Ki 1.00E+00
Terrain roughness co-eff K2 1.00E+00
Drag Co-eff (Cond.) Cdc 1.00E+00
Drag Co-eff (Insu.) Cdi 1.20E+00
Gust response factor for conductor Gc 1.83E+00
Gust response factor for Insulator Gi 1.92E+00
Calculation of Peak value of SC Current
-1.00E-01
1.91E+00 Ip =
Calculation of rigid bus parameters
8/13/2019 SCF and Cantiliver Strenth Analysis
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Moment of inertia of Tube (j) = 4.05E-06
Section modulus of tube(z) = 7.09E-05 m3
Permissible stress in rigid Bus(.max)
for normal conditions = 1.70E+08
for SC conditions = 2.36E+08
Factor for plasticity(q)
= 1.39E+00
Actual Deflection
Left Deflection Right Deflection
= 3.51E-03 m =
Calculation of design wind pressure(Pd)
Design wind pressure (Pd) N/m2 = 7.01E+02 N/m2
Design wind speed Vd = K1.K2.Vr = 3.42E+01 m/s
Vr = Vb/Ko = 3.42E+01
Calculation of wind load on equipment housing (Fw2)
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= 3.71E+02 N
Determination of load factors , , & based on support types
These factors take into consideration the effect of type of busbar support on
equipment in transmitting the dynamic forces onto supports.
Load factors for left span Load factors for right span
0.375 0.73 2.45 0.375 0.73
Determination of natural frequency
Left span Right span
fcleft = 9.52E+00 fcright =
Ratio of natural frequency & system frequency leftratio = 1.90E-01 rightratio =
Calculation of stress factors V , Vr & Vf in the rigid conductors
Vleft1 =
Vleft2 =
Vleft3 =
Vrleft1 =
Vrleft2 =
Vrleft3 =
Vfleft1 =
Vfleft2 =
Vfleft3 =
Vfleft4 =
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Vfleft5 =
Vfleft6 =
Vfleft7 =
Vfleft8 =
Vfleft9 =
Stress factors for left span Stress factors
V Vr Vf V
0.672 1 0.753 0.707
Calculation of SCF & Total deflection force
SCF between rigid bus (Fm3)
SCF between droppers
F1_left =
Gravitational load of rigid bus conductor (Fc)
Fc=m.g.l Fc_left =
Wind load on rigid bus (Fw)
Fw = Pd.Gc.Cdc.Do.L Fw_left =
Wind load on droppers (Fw1)
Fw1 = Pd.Gc.Cdc.Do.L.ns Fw1_left =
Total Effective force (F Vector sum of forces due to SCF, Wind & Dead Load.
Total Force Fm_left =
Calculation of stresses in rigid conductor (m)
m_left =
IN Limit (m < max) Leftcheck
Calculation of deflection forces on equipment top due to LEFT/RIGHT connection
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Fd = Vf.Vr..Fl Fd_left
FSCF = Vf.Vr..(Fscf-tube + Fscf-dropper) Fscf_left =
(please add al
Cantilever strength analysis for equipment supports
Wind force on equipment insulator acting on insulator midpoint Fw"
Equivalent wind force on equipment top Fw"/2
Deflection force due to left connection Fd(left)
Deflection force due to right connection Fd(right)
Total deflection force on top Fd = FW/2 + F
Fd =
Acceptance Fd < Fcant
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l Inputs
eed Vb 47 m/s
ry Ter 2
el RL 1
der analysis
scription BPI
enth Fcant 8000 N
ight Hi 2.3 m ameter D 0.2 m
ion
ISO
6.5 m
E
R
1
0
1
meters
meter Dc 0.03504 m
Uo = 1.256E-06
1.35E+05
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m4
N/m2
N/m2
2.61E-03 m
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2.45
1.10E+01 Hz
2.21E-01
0 Vright1 = 0
0.67239 Vright2 = 0.707149
0 Vright3 = 0
1 Vrright1 = 1
1 Vrright2 = 1
1 Vrright3 = 1
0 Vfright1 = 0
0.752694 Vfright2 = 0.791316
0 Vfright3 = 0
0 Vfright4 = 0
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0 Vfright5 = 0
0 Vfright6 = 0
0 Vfright7 = 0
0 Vfright8 = 0
0 Vfright9 = 0
for right span
Vr Vf
1 0.791
5.51E+03 5.11E+03 N
0.00E+00 F1_right = 0.00E+00
5.29E+02 Fc_right = 4.91E+02 N
1.03E+03 Fw_right = 9.53E+02 N
0.00E+00 Fw1_right = 0.00E+00 N
6555.02 Fm_right = 6086.804 N
3.97E+07 m_right = 3.60E+07 N/m2
YES Rightcheck YES
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1.84E+03 Fd_right 1.80E+03
1.56E+03 Fscf_right = 1.52E+03
so dropper SCF force if value is defined)
FW2 = 3.71E+02
FW2/2 = 1.86E+02
Fd_left = 1.84E+03
Fd_right = 1.80E+03
d_left + Fd_right
3.83E+03 N
check2= OK
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System Parameters Topographica
System Voltage 2.20E+02 kV Basic wind sp
System Frequency f 5.00E+01 Hz Terrain categ
Symmetrical Short Circuit Fault Current Ik 5.00E+04 A Reliability Lev
Three Phase automatic reclosing "FALSE" Equipment u
System x/r ratio x/r 3.00E+01 Equipment D
Phase to Phase Spacing am 4.00E+00 m Cantilever str
Size of Rigid Bus 4.00E+00 inch Equipment HDropper Conductor type "ACSR BER" Equipment Di
Height of equipment bus above ground Heqpt 5.90E+00 m
Equipment connection details Left Connection Right Connec
Connected Equipment Iso
Span Lenth L 6.7 m
Connection on main equipment E
Connection on other end equip. R
No. of spans 1.00E+00
Dropper Lenth (l) 0.00E+00
No. of subconductor in Dropper (Ns) 1.00E+00
Calculation Constants
Stress corresponding to the Yield point Rp0.2 1.70E+08 n/m2
Gravitational Constant g 9.81E+00 m/s2
Young's Modulus of Elasticity for Tube (E) E 6.89E+10 N/m2
Rigid Bus Parameters Dropper Para
Outer Diameter of tube Do 1.14E-01 m Conductor di
Inner Diameter of tube Di 9.69E-02 m
Mass per unit lenth M 7.70E+00 kg/m
Wall thickness of the tube Sthk 1.00E-02 m
Wind force constants
Factor for ref. wind speed (Ko) Ko 1.38E+00
Risk Co-eff (K1) Ki 1.00E+00
Terrain roughness co-eff K2 1.00E+00
Drag Co-eff (Cond.) Cdc 1.00E+00
Drag Co-eff (Insu.) Cdi 1.20E+00
Gust response factor for conductor Gc 1.83E+00
Gust response factor for Insulator Gi 1.92E+00
Calculation of Peak value of SC Current
-1.00E-01
1.91E+00 Ip =
Calculation of rigid bus parameters
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Moment of inertia of Tube (j) = 4.05E-06
Section modulus of tube(z) = 7.09E-05 m3
Permissible stress in rigid Bus(.max)
for normal conditions = 1.70E+08
for SC conditions = 2.36E+08
Factor for plasticity(q)
= 1.39E+00
Actual Deflection
Left Deflection Right Deflection
= 2.95E-03 m =
Calculation of design wind pressure(Pd)
Design wind pressure (Pd) N/m2 = 7.01E+02 N/m2
Design wind speed Vd = K1.K2.Vr = 3.42E+01 m/s
Vr = Vb/Ko = 3.42E+01
Calculation of wind load on equipment housing (Fw2)
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= 1.05E+03 N
Determination of load factors , , & based on support types
These factors take into consideration the effect of type of busbar support on
equipment in transmitting the dynamic forces onto supports.
Load factors for left span Load factors for right span
0.375 0.73 2.45 0.375 0.73
Determination of natural frequency
Left span Right span
fcleft = 1.04E+01 fcright =
Ratio of natural frequency & system frequency leftratio = 2.08E-01 rightratio =
Calculation of stress factors V , Vr & Vf in the rigid conductors
Vleft1 =
Vleft2 =
Vleft3 =
Vrleft1 =
Vrleft2 =
Vrleft3 =
Vfleft1 =
Vfleft2 =
Vfleft3 =
Vfleft4 =
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Vfleft5 =
Vfleft6 =
Vfleft7 =
Vfleft8 =
Vfleft9 =
Stress factors for left span Stress factors
V Vr Vf V
0.692935 1 0.775522 0.64632527
Calculation of SCF & Total deflection force
SCF between rigid bus (Fm3)
SCF between droppers
F1_left =
Gravitational load of rigid bus conductor (Fc)
Fc=m.g.l Fc_left =
Wind load on rigid bus (Fw)
Fw = Pd.Gc.Cdc.Do.L Fw_left =
Wind load on droppers (Fw1)
Fw1 = Pd.Gc.Cdc.Do.L.ns Fw1_left =
Total Effective force (F Vector sum of forces due to SCF, Wind & Dead Load.
Total Force Fm_left =
Calculation of stresses in rigid conductor (m)
m_left =
IN Limit (m < max) Leftcheck
Calculation of deflection forces on equipment top due to LEFT/RIGHT connection
8/13/2019 SCF and Cantiliver Strenth Analysis
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Fd = Vf.Vr..Fl Fd_left
FSCF = Vf.Vr..(Fscf-tube + Fscf-dropper) Fscf_left =
(please add al
Cantilever strength analysis for equipment supports
Wind force on equipment insulator acting on insulator midpoint Fw"
Equivalent wind force on equipment top Fw"/2
Deflection force due to left connection Fd(left)
Deflection force due to right connection Fd(right)
Total deflection force on top Fd = FW/2 + F
Fd =
Acceptance Fd < Fcant
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l Inputs
eed Vb 47 m/s
ry Ter 2
el RL 1
der analysis
scription CB
enth Fcant 10000 N
ight Hi 4.2 m ameter D 0.31 m
ion
ISO
7.4 m
E
R
1
0
1
meters
meter Dc 0.03504 m
Uo = 1.256E-06
1.35E+05 kA
8/13/2019 SCF and Cantiliver Strenth Analysis
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m4
N/m2
N/m2
4.39E-03 m
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2.45
8.52E+00 Hz
1.70E-01
0 Vright1 = 0
0.692935 Vright2 = 0.646325
0 Vright3 = 0
1 Vrright1 = 1
1 Vrright2 = 1
1 Vrright3 = 1
0 Vfright1 = 0
0.775522 Vfright2 = 0.723734
0 Vfright3 = 0
0 Vfright4 = 0
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0 Vfright5 = 0
0 Vfright6 = 0
0 Vfright7 = 0
0 Vfright8 = 0
0 Vfright9 = 0
for right span
Vr Vf
1 0.7237338
5.27E+03 5.82E+03 N
0.00E+00 F1_right = 0.00E+00
5.06E+02 Fc_right = 5.59E+02 N
9.82E+02 Fw_right = 1.09E+03 N
0.00E+00 Fw1_right = 0.00E+00 N
6274.09 Fm_right = 6929.592 N
3.75E+07 m_right = 4.27E+07 N/m2
YES Rightcheck YES
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1.82E+03 Fd_right 1.87E+03
1.53E+03 Fscf_right = 1.58E+03
so dropper SCF force if value is defined) 1.56E+02
FW2 = 1.05E+03
FW2/2 = 5.26E+02
Fd_left = 1.82E+03
Fd_right = 1.87E+03
d_left + Fd_right
4.22E+03 N
check2= OK
8/13/2019 SCF and Cantiliver Strenth Analysis
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System Parameters Topographica
System Voltage 2.20E+02 kV Basic wind sp
System Frequency f 5.00E+01 Hz Terrain categ
Symmetrical Short Circuit Fault Current Ik 5.00E+04 A Reliability Lev
Three Phase automatic reclosing "FALSE" Equipment u
System x/r ratio x/r 3.00E+01 Equipment D
Phase to Phase Spacing am 4.00E+00 m Cantilever str
Size of Rigid Bus 4.00E+00 inch Equipment HDropper Conductor type "ACSR BER" Equipment Di
Height of equipment bus above ground Heqpt 5.90E+00 m
Equipment connection details Left Connection Right Connec
Connected Equipment BPI
Span Lenth L 1.85 m
Connection on main equipment E
Connection on other end equip. R
No. of spans 1.00E+00
Dropper Lenth (l) 0.00E+00
No. of subconductor in Dropper (Ns) 1.00E+00
Calculation Constants
Stress corresponding to the Yield point Rp0.2 1.70E+08 n/m2
Gravitational Constant g 9.81E+00 m/s2
Young's Modulus of Elasticity for Tube (E) E 6.89E+10 N/m2
Rigid Bus Parameters Dropper Para
Outer Diameter of tube Do 1.14E-01 m Conductor di
Inner Diameter of tube Di 9.69E-02 m
Mass per unit lenth M 7.70E+00 kg/m
Wall thickness of the tube Sthk 1.00E-02 m
Wind force constants
Factor for ref. wind speed (Ko) Ko 1.38E+00
Risk Co-eff (K1) Ki 1.00E+00
Terrain roughness co-eff K2 1.00E+00
Drag Co-eff (Cond.) Cdc 1.00E+00
Drag Co-eff (Insu.) Cdi 1.20E+00
Gust response factor for conductor Gc 1.83E+00
Gust response factor for Insulator Gi 1.92E+00
Calculation of Peak value of SC Current
-1.00E-01
1.91E+00 Ip =
Calculation of rigid bus parameters
8/13/2019 SCF and Cantiliver Strenth Analysis
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Moment of inertia of Tube (j) = 4.05E-06
Section modulus of tube(z) = 7.09E-05 m3
Permissible stress in rigid Bus(.max)
for normal conditions = 1.70E+08
for SC conditions = 2.36E+08
Factor for plasticity(q)
= 1.39E+00
Actual Deflection
Left Deflection Right Deflection
= 1.71E-05 m =
Calculation of design wind pressure(Pd)
Design wind pressure (Pd) N/m2 = 7.01E+02 N/m2
Design wind speed Vd = K1.K2.Vr = 3.42E+01 m/s
Vr = Vb/Ko = 3.42E+01
Calculation of wind load on equipment housing (Fw2)
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= 6.50E+02 N
Determination of load factors , , & based on support types
These factors take into consideration the effect of type of busbar support on
equipment in transmitting the dynamic forces onto supports.
Load factors for left span Load factors for right span
0.375 0.73 2.45 0.375 0.73
Determination of natural frequency
Left span Right span
fcleft = 1.36E+02 fcright =
Ratio of natural frequency & system frequency leftratio = 2.73E+00 rightratio =
Calculation of stress factors V , Vr & Vf in the rigid conductors
Vleft1 =
Vleft2 =
Vleft3 =
Vrleft1 =
Vrleft2 =
Vrleft3 =
Vfleft1 =
Vfleft2 =
Vfleft3 =
Vfleft4 =
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Vfleft5 =
Vfleft6 =
Vfleft7 =
Vfleft8 =
Vfleft9 =
Stress factors for left span Stress factors
V Vr Vf V
1 1 1.840196 1
Calculation of SCF & Total deflection force
SCF between rigid bus (Fm3)
SCF between droppers
F1_left =
Gravitational load of rigid bus conductor (Fc)
Fc=m.g.l Fc_left =
Wind load on rigid bus (Fw)
Fw = Pd.Gc.Cdc.Do.L Fw_left =
Wind load on droppers (Fw1)
Fw1 = Pd.Gc.Cdc.Do.L.ns Fw1_left =
Total Effective force (F Vector sum of forces due to SCF, Wind & Dead Load.
Total Force Fm_left =
Calculation of stresses in rigid conductor (m)
m_left =
IN Limit (m < max) Leftcheck
Calculation of deflection forces on equipment top due to LEFT/RIGHT connection
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Fd = Vf.Vr..Fl Fd_left
FSCF = Vf.Vr..(Fscf-tube + Fscf-dropper) Fscf_left =
(please add al
Cantilever strength analysis for equipment supports
Wind force on equipment insulator acting on insulator midpoint Fw"
Equivalent wind force on equipment top Fw"/2
Deflection force due to left connection Fd(left)
Deflection force due to right connection Fd(right)
Total deflection force on top Fd = FW/2 + F
Fd =
Acceptance Fd < Fcant
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l Inputs
eed Vb 47 m/s
ry Ter 2
el RL 1
der analysis
scription CB
enth Fcant 3434 N
ight Hi 3.5 m ameter D 0.23 m
ion
ISO
1.98 m
E
R
1
0
1
meters
meter Dc 0.03504 m
Uo = 1.256E-06
1.35E+05 kA
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m4
N/m2
N/m2
2.25E-05 m
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2.45
1.19E+02 Hz
2.38E+00
0 Vright1 = 0
0 Vright2 = 0
1 Vright3 = 1
1 Vrright1 = 1
1 Vrright2 = 1
1 Vrright3 = 1
0 Vfright1 = 0
0 Vfright2 = 0
0 Vfright3 = 0
0 Vfright4 = 0
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0 Vfright5 = 2.7
1.840196 Vfright6 = 0
0 Vfright7 = 0
0 Vfright8 = 0
0 Vfright9 = 0
for right span
Vr Vf
1 2.7
1.46E+03 1.56E+03 N
0.00E+00 F1_right = 0.00E+00
1.40E+02 Fc_right = 1.50E+02 N
2.71E+02 Fw_right = 2.90E+02 N
0.00E+00 Fw1_right = 0.00E+00 N
1732.398 Fm_right = 1854.134 N
4.13E+06 m_right = 4.73E+06 N/m2
YES Rightcheck YES
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1.19E+03 Fd_right 1.87E+03 \
1.00E+03 Fscf_right = 1.58E+03
so dropper SCF force if value is defined) 1.02E+02
FW2 = 6.50E+02
FW2/2 = 3.25E+02
Fd_left = 1.19E+03
Fd_right = 1.87E+03
d_left + Fd_right
3.39E+03 N
check2= OK
8/13/2019 SCF and Cantiliver Strenth Analysis
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System Parameters Topographica
System Voltage 2.20E+02 kV Basic wind sp
System Frequency f 5.00E+01 Hz Terrain categ
Symmetrical Short Circuit Fault Current Ik 5.00E+04 A Reliability Lev
Three Phase automatic reclosing "FALSE" Equipment u
System x/r ratio x/r 3.00E+01 Equipment D
Phase to Phase Spacing am 4.00E+00 m Cantilever str
Size of Rigid Bus 4.00E+00 inch Equipment HDropper Conductor type "ACSR BER" Equipment Di
Height of equipment bus above ground Heqpt 5.90E+00 m
Equipment connection details Left Connection Right Connec
Connected Equipment NA
Span Lenth L 0 m
Connection on main equipment E
Connection on other end equip. R
No. of spans 1.00E+00
Dropper Lenth (l) 1.11E+01
No. of subconductor in Dropper (Ns) 1.00E+00
Calculation Constants
Stress corresponding to the Yield point Rp0.2 1.70E+08 n/m2
Gravitational Constant g 9.81E+00 m/s2
Young's Modulus of Elasticity for Tube (E) E 6.89E+10 N/m2
Rigid Bus Parameters Dropper Para
Outer Diameter of tube Do 1.14E-01 m Conductor di
Inner Diameter of tube Di 9.69E-02 m
Mass per unit lenth M 7.70E+00 kg/m
Wall thickness of the tube Sthk 1.00E-02 m
Wind force constants
Factor for ref. wind speed (Ko) Ko 1.38E+00
Risk Co-eff (K1) Ki 1.00E+00
Terrain roughness co-eff K2 1.00E+00
Drag Co-eff (Cond.) Cdc 1.00E+00
Drag Co-eff (Insu.) Cdi 1.20E+00
Gust response factor for conductor Gc 1.83E+00
Gust response factor for Insulator Gi 1.92E+00
Calculation of Peak value of SC Current
-1.00E-01
1.91E+00 Ip =
Calculation of rigid bus parameters
8/13/2019 SCF and Cantiliver Strenth Analysis
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Moment of inertia of Tube (j) = 4.05E-06
Section modulus of tube(z) = 7.09E-05 m3
Permissible stress in rigid Bus(.max)
for normal conditions = 1.70E+08
for SC conditions = 2.36E+08
Factor for plasticity(q)
= 1.39E+00
Actual Deflection
Left Deflection Right Deflection
= 0.00E+00 m =
Calculation of design wind pressure(Pd)
Design wind pressure (Pd) N/m2 = 7.01E+02 N/m2
Design wind speed Vd = K1.K2.Vr = 3.42E+01 m/s
Vr = Vb/Ko = 3.42E+01
Calculation of wind load on equipment housing (Fw2)
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= 8.11E+02 N
Determination of load factors , , & based on support types
These factors take into consideration the effect of type of busbar support on
equipment in transmitting the dynamic forces onto supports.
Load factors for left span Load factors for right span
0.375 0.73 2.45 0.375 0.73
Determination of natural frequency
Left span Right span
fcleft = #DIV/0! fcright =
Ratio of natural frequency & system frequency leftratio = #DIV/0! rightratio =
Calculation of stress factors V , Vr & Vf in the rigid conductors
Vleft1 =
Vleft2 =
Vleft3 =
Vrleft1 =
Vrleft2 =
Vrleft3 =
Vfleft1 =
Vfleft2 =
Vfleft3 =
Vfleft4 =
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Vfleft5 =
Vfleft6 =
Vfleft7 =
Vfleft8 =
Vfleft9 =
Stress factors for left span Stress factors
V Vr Vf V
#DIV/0! 1 #DIV/0! #DIV/0!
Calculation of SCF & Total deflection force
SCF between rigid bus (Fm3)
SCF between droppers
F1_left =
Gravitational load of rigid bus conductor (Fc)
Fc=m.g.l Fc_left =
Wind load on rigid bus (Fw)
Fw = Pd.Gc.Cdc.Do.L Fw_left =
Wind load on droppers (Fw1)
Fw1 = Pd.Gc.Cdc.Do.L.ns Fw1_left =
Total Effective force (F Vector sum of forces due to SCF, Wind & Dead Load.
Total Force Fm_left =
Calculation of stresses in rigid conductor (m)
m_left =
IN Limit (m < max) Leftcheck
Calculation of deflection forces on equipment top due to LEFT/RIGHT connection
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Fd = Vf.Vr..Fl Fd_left
FSCF = Vf.Vr..(Fscf-tube + Fscf-dropper) Fscf_left =
(please add al
Cantilever strength analysis for equipment supports
Wind force on equipment insulator acting on insulator midpoint Fw"
Equivalent wind force on equipment top Fw"/2
Deflection force due to left connection Fd(left)
Deflection force due to right connection Fd(right)
Total deflection force on top Fd = FW/2 + F
Fd =
Acceptance Fd < Fcant
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l Inputs
eed Vb 47 m/s
ry Ter 2
el RL 1
der analysis
scription LA
enth Fcant 3434 N
ight Hi 2.87 m ameter D 0.35 m
ion
NA
0 m
E
R
1
0
1
meters
meter Dc 0.03504 m
Uo = 1.256E-06
1.35E+05 kA
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m4
N/m2
N/m2
0.00E+00 m
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2.45
#DIV/0! Hz
#DIV/0!
#DIV/0! Vright1 = #DIV/0!
#DIV/0! Vright2 = #DIV/0!
#DIV/0! Vright3 = #DIV/0!
1 Vrright1 = 1
1 Vrright2 = 1
1 Vrright3 = 1
#DIV/0! Vfright1 = #DIV/0!
#DIV/0! Vfright2 = #DIV/0!
#DIV/0! Vfright3 = #DIV/0!
#DIV/0! Vfright4 = #DIV/0!
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#DIV/0! Vfright5 = #DIV/0!
#DIV/0! Vfright6 = #DIV/0!
#DIV/0! Vfright7 = #DIV/0!
#DIV/0! Vfright8 = #DIV/0!
#DIV/0! Vfright9 = #DIV/0!
for right span
Vr Vf
1 #DIV/0!
0.00E+00 0.00E+00 N
1.04E+03 F1_right = 0.00E+00
0.00E+00 Fc_right = 0.00E+00 N
0.00E+00 Fw_right = 0.00E+00 N
4.99E+02 Fw1_right = 0.00E+00 N
1.54E+03 Fm_right = 0.00E+00 N
#DIV/0! m_right = #DIV/0! N/m2
#DIV/0! Rightcheck #DIV/0!
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1.54E+03 Fd_right 0.00E+00 \
1.04E+03 Fscf_right = #DIV/0!
so dropper SCF force if value is defined) 1.06E+02
FW2 = 8.11E+02
FW2/2 = 4.06E+02
Fd_left = 1.54E+03
Fd_right = 0.00E+00
d_left + Fd_right
1.94E+03 N
check2= OK
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System Parameters Topographica
System Voltage 2.20E+02 kV Basic wind sp
System Frequency f 5.00E+01 Hz Terrain categ
Symmetrical Short Circuit Fault Current Ik 5.00E+04 A Reliability Lev
Three Phase automatic reclosing "FALSE" Equipment u
System x/r ratio x/r 3.00E+01 Equipment D
Phase to Phase Spacing am 4.00E+00 m Cantilever str
Size of Rigid Bus 4.00E+00 inch Equipment HDropper Conductor type "ACSR BER" Equipment Di
Height of equipment bus above ground Heqpt 5.90E+00 m
Equipment connection details Left Connection Right Connec
Connected Equipment CB
Span Lenth L 7.4 m
Connection on main equipment R
Connection on other end equip. E
No. of spans 1.00E+00
Dropper Lenth (l) 0.00E+00
No. of subconductor in Dropper (Ns) 1.00E+00
Calculation Constants
Stress corresponding to the Yield point Rp0.2 1.70E+08 n/m2
Gravitational Constant g 9.81E+00 m/s2
Young's Modulus of Elasticity for Tube (E) E 6.89E+10 N/m2
Rigid Bus Parameters Dropper Para
Outer Diameter of tube Do 1.14E-01 m Conductor di
Inner Diameter of tube Di 9.69E-02 m
Mass per unit lenth M 7.70E+00 kg/m
Wall thickness of the tube Sthk 1.00E-02 m
Wind force constants
Factor for ref. wind speed (Ko) Ko 1.38E+00
Risk Co-eff (K1) Ki 1.00E+00
Terrain roughness co-eff K2 1.00E+00
Drag Co-eff (Cond.) Cdc 1.00E+00
Drag Co-eff (Insu.) Cdi 1.20E+00
Gust response factor for conductor Gc 1.83E+00
Gust response factor for Insulator Gi 1.92E+00
Calculation of Peak value of SC Current
-1.00E-01
1.91E+00 Ip =
Calculation of rigid bus parameters
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Moment of inertia of Tube (j) = 4.05E-06
Section modulus of tube(z) = 7.09E-05 m3
Permissible stress in rigid Bus(.max)
for normal conditions = 1.70E+08
for SC conditions = 2.36E+08
Factor for plasticity(q)
= 1.39E+00
Actual Deflection
Left Deflection Right Deflection
= 4.39E-03 m =
Calculation of design wind pressure(Pd)
Design wind pressure (Pd) N/m2 = 7.01E+02 N/m2
Design wind speed Vd = K1.K2.Vr = 3.42E+01 m/s
Vr = Vb/Ko = 3.42E+01
Calculation of wind load on equipment housing (Fw2)
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= 7.24E+02 N
Determination of load factors , , & based on support types
These factors take into consideration the effect of type of busbar support on
equipment in transmitting the dynamic forces onto supports.
Load factors for left span Load factors for right span
0.625 0.73 2.45 0.375 0.73
Determination of natural frequency
Left span Right span
fcleft = 8.52E+00 fcright =
Ratio of natural frequency & system frequency leftratio = 1.70E-01 rightratio =
Calculation of stress factors V , Vr & Vf in the rigid conductors
Vleft1 =
Vleft2 =
Vleft3 =
Vrleft1 =
Vrleft2 =
Vrleft3 =
Vfleft1 =
Vfleft2 =
Vfleft3 =
Vfleft4 =
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Vfleft5 =
Vfleft6 =
Vfleft7 =
Vfleft8 =
Vfleft9 =
Stress factors for left span Stress factors
V Vr Vf V
0.646325 1 0.723734 0.52915403
Calculation of SCF & Total deflection force
SCF between rigid bus (Fm3)
SCF between droppers
F1_left =
Gravitational load of rigid bus conductor (Fc)
Fc=m.g.l Fc_left =
Wind load on rigid bus (Fw)
Fw = Pd.Gc.Cdc.Do.L Fw_left =
Wind load on droppers (Fw1)
Fw1 = Pd.Gc.Cdc.Do.L.ns Fw1_left =
Total Effective force (F Vector sum of forces due to SCF, Wind & Dead Load.
Total Force Fm_left =
Calculation of stresses in rigid conductor (m)
m_left =
IN Limit (m < max) Leftcheck
Calculation of deflection forces on equipment top due to LEFT/RIGHT connection
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Fd = Vf.Vr..Fl Fd_left
FSCF = Vf.Vr..(Fscf-tube + Fscf-dropper) Fscf_left =
(please add al
Cantilever strength analysis for equipment supports
Wind force on equipment insulator acting on insulator midpoint Fw"
Equivalent wind force on equipment top Fw"/2
Deflection force due to left connection Fd(left)
Deflection force due to right connection Fd(right)
Total deflection force on top Fd = FW/2 + F
Fd =
Acceptance Fd < Fcant
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l Inputs
eed Vb 47 m/s
ry Ter 2
el RL 1
der analysis
scription CB
enth Fcant 10000 N
ight Hi 2.56 m ameter D 0.35 m
ion
ISO
9.5 m
E
R
1
0
1
meters
meter Dc 0.03504 m
Uo = 1.256E-06
1.35E+05 kA
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m4
N/m2
N/m2
1.19E-02 m
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2.45
5.17E+00 Hz
1.03E-01
0 Vright1 = 0
0.646325 Vright2 = 0.529154
0 Vright3 = 0
1 Vrright1 = 1
1 Vrright2 = 1
1 Vrright3 = 1
0 Vfright1 = 0
0.723734 Vfright2 = 0.593544
0 Vfright3 = 0
0 Vfright4 = 0
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0 Vfright5 = 0
0 Vfright6 = 0
0 Vfright7 = 0
0 Vfright8 = 0
0 Vfright9 = 0
for right span
Vr Vf
1 0.5935435
5.82E+03 7.47E+03 N
0.00E+00 F1_right = 0.00E+00
5.59E+02 Fc_right = 7.18E+02 N
1.09E+03 Fw_right = 1.39E+03 N
0.00E+00 Fw1_right = 0.00E+00 N
6929.592 Fm_right = 8896.098 N
4.27E+07 m_right = 5.76E+07 N/m2
YES Rightcheck YES
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3.12E+03 Fd_right 1.97E+03 \
2.63E+03 Fscf_right = 1.66E+03
so dropper SCF force if value is defined) 2.69E+02
FW2 = 7.24E+02
FW2/2 = 3.62E+02
Fd_left = 3.12E+03
Fd_right = 1.97E+03
d_left + Fd_right
5.46E+03 N
check2= OK
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System Parameters Topographica
System Voltage 2.20E+02 kV Basic wind sp
System Frequency f 5.00E+01 Hz Terrain categ
Symmetrical Short Circuit Fault Current Ik 5.00E+04 A Reliability Lev
Three Phase automatic reclosing "FALSE" Equipment u
System x/r ratio x/r 3.00E+01 Equipment D
Phase to Phase Spacing am 4.00E+00 m Cantilever str
Size of Rigid Bus 4.00E+00 inch Equipment HDropper Conductor type "ACSR BER" Equipment Di
Height of equipment bus above ground Heqpt 5.90E+00 m
Equipment connection details Left Connection Right Connec
Connected Equipment NA
Span Lenth L 0 m
Connection on main equipment R
Connection on other end equip. E
No. of spans 1.00E+00
Dropper Lenth (l) 1.11E+01
No. of subconductor in Dropper (Ns) 1.00E+00
Calculation Constants
Stress corresponding to the Yield point Rp0.2 1.70E+08 n/m2
Gravitational Constant g 9.81E+00 m/s2
Young's Modulus of Elasticity for Tube (E) E 6.89E+10 N/m2
Rigid Bus Parameters Dropper Para
Outer Diameter of tube Do 1.14E-01 m Conductor di
Inner Diameter of tube Di 9.69E-02 m
Mass per unit lenth M 7.70E+00 kg/m
Wall thickness of the tube Sthk 1.00E-02 m
Wind force constants
Factor for ref. wind speed (Ko) Ko 1.38E+00
Risk Co-eff (K1) Ki 1.00E+00
Terrain roughness co-eff K2 1.00E+00
Drag Co-eff (Cond.) Cdc 1.00E+00
Drag Co-eff (Insu.) Cdi 1.20E+00
Gust response factor for conductor Gc 1.83E+00
Gust response factor for Insulator Gi 1.92E+00
Calculation of Peak value of SC Current
-1.00E-01
1.91E+00 Ip =
Calculation of rigid bus parameters
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Moment of inertia of Tube (j) = 4.05E-06
Section modulus of tube(z) = 7.09E-05 m3
Permissible stress in rigid Bus(.max)
for normal conditions = 1.70E+08
for SC conditions = 2.36E+08
Factor for plasticity(q)
= 1.39E+00
Actual Deflection
Left Deflection Right Deflection
= 0.00E+00 m =
Calculation of design wind pressure(Pd)
Design wind pressure (Pd) N/m2 = 7.01E+02 N/m2
Design wind speed Vd = K1.K2.Vr = 3.42E+01 m/s
Vr = Vb/Ko = 3.42E+01
Calculation of wind load on equipment housing (Fw2)
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= 6.41E+02 N
Determination of load factors , , & based on support types
These factors take into consideration the effect of type of busbar support on
equipment in transmitting the dynamic forces onto supports.
Load factors for left span Load factors for right span
0.625 0.73 2.45 0.375 0.73
Determination of natural frequency
Left span Right span
fcleft = #DIV/0! fcright =
Ratio of natural frequency & system frequency leftratio = #DIV/0! rightratio =
Calculation of stress factors V , Vr & Vf in the rigid conductors
Vleft1 =
Vleft2 =
Vleft3 =
Vrleft1 =
Vrleft2 =
Vrleft3 =
Vfleft1 =
Vfleft2 =
Vfleft3 =
Vfleft4 =
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Vfleft5 =
Vfleft6 =
Vfleft7 =
Vfleft8 =
Vfleft9 =
Stress factors for left span Stress factors
V Vr Vf V
#DIV/0! 1 #DIV/0! #DIV/0!
Calculation of SCF & Total deflection force
SCF between rigid bus (Fm3)
SCF between droppers
F1_left =
Gravitational load of rigid bus conductor (Fc)
Fc=m.g.l Fc_left =
Wind load on rigid bus (Fw)
Fw = Pd.Gc.Cdc.Do.L Fw_left =
Wind load on droppers (Fw1)
Fw1 = Pd.Gc.Cdc.Do.L.ns Fw1_left =
Total Effective force (F Vector sum of forces due to SCF, Wind & Dead Load.
Total Force Fm_left =
Calculation of stresses in rigid conductor (m)
m_left =
IN Limit (m < max) Leftcheck
Calculation of deflection forces on equipment top due to LEFT/RIGHT connection
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Fd = Vf.Vr..Fl Fd_left
FSCF = Vf.Vr..(Fscf-tube + Fscf-dropper) Fscf_left =
(please add al
Cantilever strength analysis for equipment supports
Wind force on equipment insulator acting on insulator midpoint Fw"
Equivalent wind force on equipment top Fw"/2
Deflection force due to left connection Fd(left)
Deflection force due to right connection Fd(right)
Total deflection force on top Fd = FW/2 + F
Fd =
Acceptance Fd < Fcant
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l Inputs
eed Vb 47 m/s
ry Ter 2
el RL 1
der analysis
scription LA
enth Fcant 10000 N
ight Hi 2.94 m ameter D 0.27 m
ion
NA
0 m
E
R
1
0
1
meters
meter Dc 0.03504 m
Uo = 1.256E-06
1.35E+05 kA
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m4
N/m2
N/m2
0.00E+00 m
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2.45
#DIV/0! Hz
#DIV/0!
#DIV/0! Vright1 = #DIV/0!
#DIV/0! Vright2 = #DIV/0!
#DIV/0! Vright3 = #DIV/0!
1 Vrright1 = 1
1 Vrright2 = 1
1 Vrright3 = 1
#DIV/0! Vfright1 = #DIV/0!
#DIV/0! Vfright2 = #DIV/0!
#DIV/0! Vfright3 = #DIV/0!
#DIV/0! Vfright4 = #DIV/0!
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#DIV/0! Vfright5 = #DIV/0!
#DIV/0! Vfright6 = #DIV/0!
#DIV/0! Vfright7 = #DIV/0!
#DIV/0! Vfright8 = #DIV/0!
#DIV/0! Vfright9 = #DIV/0!
for right span
Vr Vf
1 #DIV/0!
0.00E+00 0.00E+00 N
1.04E+03 F1_right = 0.00E+00
0.00E+00 Fc_right = 0.00E+00 N
0.00E+00 Fw_right = 0.00E+00 N
4.99E+02 Fw1_right = 0.00E+00 N
1.54E+03 Fm_right = 0 N
#DIV/0! m_right = #DIV/0! N/m2
#DIV/0! Rightcheck #DIV/0!
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1.54E+03 Fd_right #DIV/0! \
1.04E+03 Fscf_right = #DIV/0!
so dropper SCF force if value is defined) 1.06E+02
FW2 = 6.41E+02
FW2/2 = 3.21E+02
Fd_left = 1.54E+03
Fd_right = #DIV/0!
d_left + Fd_right
1.86E+03 N
check2= OK
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Varriables Value(Alstom)
lc 3.8
ns 1
Fst 843.5419
F' 93.61594
Mc' 2.384368
r 2.0017521 63.45501
Fes 0.1
T 0.567381
Tres 0.410754
Eeff 1.94E+10
N 2.67E-06
8.22E-01
Tk1 0.226952
end 126.91
-1.00175
m 180
x== 3.712906
Ftd1 2271.73
ela 0.003809
th 3.3E-05
Cd 1.755157
Cf 1.15
fed 0.201843
180
Ftd2 2271.73
Ftd 2271.73
Ftdkg 231.6437
Ffd 2786.15
Ffdkg 284.0981
bh 0.180566 0.201843
v1 1.643041
v2 2.702
V3 0.292
Fv 11575.99
st 0.456471pi 36.4265 Ve1 calculationj 5.00101 2.476833
3.166 1.187069
V41 6.134703 0.479269
Ve1 1.098 37.1111 19.32491 0.520731
Fpi.d1 7267.554 19.07491
1 4.367483
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V42 6.134703 4.867483
Ve2 4.864
Fpi.d2 9832.03
Fpi.d 9832.03
Fpi.d.kg 741.5871
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E 6.20E+10
S 100000
L 3.8
As 0.000724
2.196
0.456Cth 2.7E-19
Ik 50000
Uo 1.26E-06 1.570796
Ls 2.5
as 0.25 1
ds 0.03504
Li 0
Dg 0
Ls 2.5 end 123.5216
Fst.kg 86.0757 21 126.91
mc 2.187 (1-r) -1.00175
ms 1.5
nc 2
Tk1 1
.4T 0.226952
Tk1/Tres 0.552526
aph 4
amin 3.388869
md 0
Ve2 Calculation
2.476833
1.187069
0.479269
0.520731
19.32491
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19.07491
4.367483
4.867483
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Varriables Value(Alstom)
lc 3.8
ns 1
Fst 843.5419
F' 93.61594
Mc' 2.384368
r 2.0017521 63.45501
Fes 0.1
T 0.567381
Tres 0.410754
Eeff 1.94E+10
N 2.67E-06
8.22E-01
Tk1 0.226952
end 126.91
-1.00175
m 180
x== 3.712906
Ftd1 2271.73
ela 0.003809
th 3.3E-05
Cd 1.755157
Cf 1.15
fed 0.201843
180
Ftd2 2271.73
Ftd 2271.73
Ftdkg 231.6437
Ffd 2786.15
Ffdkg 284.0981
bh 0.180566 0.201843
v1 1.643041
v2 2.702
V3 0.292
Fv 11575.99
st 0.456471pi 36.4265 Ve1 calculationj 5.00101 2.476833
3.166 1.187069
V41 6.134703 0.479269
Ve1 1.098 37.1111 19.32491 0.520731
Fpi.d1 7267.554 19.07491
1 4.367483
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V42 6.134703 4.867483
Ve2 4.864
Fpi.d2 9832.03
Fpi.d 9832.03
Fpi.d.kg 741.5871
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E 6.20E+10
S 100000
L 3.8
As 0.000724
2.196
0.456Cth 2.7E-19
Ik 50000
Uo 1.26E-06 1.570796
Ls 2.5
as 0.25 1
ds 0.03504
Li 0
Dg 0
Ls 2.5 end 123.5216
Fst.kg 86.0757 21 126.91
mc 2.187 (1-r) -1.00175
ms 1.5
nc 2
Tk1 1
.4T 0.226952
Tk1/Tres 0.552526
aph 4
amin 3.388869
md 0
Ve2 Calculation
2.476833
1.187069
0.479269
0.520731
19.32491
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19.07491
4.367483
4.867483
