Developed by: Project RPA
Last updated: 30.04.2024
e-mail: proRpaLab@gmail.com
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GRID MODEL 110/20 kV

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SC HV-1 no
АВС
АВС0
AB
BC
CA
AB0
BC0
CA0
A0
B0
C0
OPC HV-1 no
АВС
AB
BC
CA
A
B
C
RSC, ROPC
SC MV-1 no
АВС
АВС0
AB
BC
CA
AB0
BC0
CA0
A0
B0
C0
OPC MV-1 no
АВС
AB
BC
CA
A
B
C
RSC, ROPC
SC MV bar-1 no
АВС
АВС0
AB
BC
CA
AB0
BC0
CA0
A0
B0
C0
RSC, ROPC
SC HV-2 no
АВС
АВС0
AB
BC
CA
AB0
BC0
CA0
A0
B0
C0
OPC HV-2 no
АВС
AB
BC
CA
A
B
C
RSC, ROPC
SC MV-2 no
АВС
АВС0
AB
BC
CA
AB0
BC0
CA0
A0
B0
C0
OPC MV-2 no
АВС
AB
BC
CA
A
B
C
RSC, ROPC
SC MV bar-2 no
АВС
АВС0
AB
BC
CA
AB0
BC0
CA0
A0
B0
C0
RSC, ROPC
Currents [1]
IA
IB
IC
I1
I2
I0
IN
IAB+
IBC+
ICA+
IAB
IBC
ICA
Voltages [1]
UA
UB
UC
U1
U2
U0
3U0
UAB+
UBC+
UCA+
UAB
UBC
UCA
Phasor notation remove numbers
Currents [2]
IA
IB
IC
I1
I2
I0
IN
IAB+
IBC+
ICA+
IAB
IBC
ICA
Voltages [2]
UA
UB
UC
U1
U2
U0
3U0
UAB+
UBC+
UCA+
UAB
UBC
UCA
Phasor notation remove numbers
Currents [3]
IA
IB
IC
I1
I2
I0
IN
IAB+
IBC+
ICA+
IAB
IBC
ICA
Voltages [3]
UA
UB
UC
U1
U2
U0
3U0
UAB+
UBC+
UCA+
UAB
UBC
UCA
Phasor notation remove numbers
Currents [4]
IA
IB
IC
I1
I2
I0
IN
IAB+
IBC+
ICA+
IAB
IBC
ICA
Voltages [4]
UA
UB
UC
U1
U2
U0
3U0
UAB+
UBC+
UCA+
UAB
UBC
UCA
Phasor notation remove numbers
110 kV, T, Ubase, coupling (A)
Power system
U= kV ψ1= ° Ubase= kV
through Z through Ik through Sk
I know X0 I know Ik1" I know Sk1"
X1(2)= Ω Ik3"= kA Sk3"= MVA
X0= Ω Ik1"= kA 3Sk1"= MVA
Load on the 110 kV busbar
through Z through S (Z0=Z1(2))
I know Z0
Z1(2)= + j Ω P= MW
Z0= + j Ω Q= Mvar
power line 110 kV
I know Z0
Z1(2)= + j Ω/km l= km
Z0= + j Ω/km
Transformer 110 kV
V group S= MVA
ukr= % V ratio =
X0/X1= as seen from the grounded wye-winding
Coupling between the power systems on the 110 kV side
I know X0
X1(2)= Ω
X0= Ω
20 kV (А)
Power grid 20 kV
ZN= + j Ω Ubase= kV
C∑= µF
Load on the 20 kV busbar
through Z through S (Z0=inf.)
Z1(2)= + j Ω P= MW
Q= Mvar
power line 20 kV
I know Z0
Z1(2)= + j Ω/km l= km
Z0= + j Ω/km C= µF/km
Load on the 20 kV power line
through Z through S (Z0=inf.)
Z1(2)= + j Ω P= MW
Q= Mvar
110 kV, T (B)
Power system
U= kV ψ2= °
through Z through Ik through Sk
I know X0 I know Ik1" I know Sk1"
X1(2)= Ω Ik3"= kA Sk3"= MVA
X0= Ω Ik1"= kA 3Sk1"= MVA
Load on the 110 kV busbar
through Z through S (Z0=Z1(2))
I know Z0
Z1(2)= + j Ω P= MW
Z0= + j Ω Q= Mvar
Power line 110 kV
I know Z0
Z1(2)= + j Ω/km l= km
Z0= + j Ω/km
Transformer 110 kV
V group S= MVA
ukr= % V ratio=
X0/X1= as seen from the grounded wye-winding
20 kV (B)
Power grid 20 kV
ZN= + j Ω
C∑= µF
Load on the 20 kV busbar
through Z through S (Z0=inf)
Z1(2)= + j Ω P= MW
Q= Mvar
power line 20 kV
I know Z0
Z1(2)= + j Ω/km l= km
Z0= + j Ω/km C= µF/km
Load on the 20 kV power line
through Z through S (Z0=inf.)
Z1(2)= + j Ω P= MW
Q= Mvar
CT, VT 1
kr_ct =
Uprimary =
CT, VT 2
kr_ct =
Uprimary =
CT, VT 3
kr_ct =
Uprimary =
CT, VT 4
kr_ct =
Uprimary =