Post on 22-May-2019
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4 juillet 20111
Modeling the electrical behavior of the
TKJ on EMTP-RV
EL AKOUM Ali
ali.el-akoum@edf.fr
eDF R&D
Plan
4 juillet 20113
Plan
1 – Definition
2 – Modeling method on EMTP-RV
3 – Dynamic Link Library and EMTP-RV
4 – Dynamic Link Library and TKJ
5 – Validation of the model
6 – Conclusion
THEMIS R26 EL AKOUM Ali
1 –Definition
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1–Definition
TKJ :
Multiphase, inversed, rectified synchronous machine
TKJ Main generatorRotating part
Amrature stator
Fie
ld
circ
uit
Roto
r
Grid
THEMIS R26 EL AKOUM Ali
2 - Modeling method on EMTP-RV
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2 - Modeling method on EMTP-RV
TKJ on EMTP
THEMIS R26 EL AKOUM Ali
4 juillet 20118
2 - Modeling method on EMTP-RV
The electromagnetic field in the winding “j” of the machine is
given by this equation:
Where :
( )( ) . ( )
( )( ) . ( )
j
j s j
f
f f f
d te t R i t
dt
d tV t R i t
dt
1
( ) ( ). ( ) ( ). ( )
q
j fj f jk k
k
t M t i t M t i t
1
( ) . ( ) ( ). ( )
q
f ff f fk k
k
t M i t M t i t
THEMIS R26 EL AKOUM Ali
3 – Dynamic Link Library and
EMTP-RV
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What is the DLL?
• allow EMTP-RV users to develop advanced program
model modules and interface them directly with the
EMTP-RV engine.
How can the DLL interact with the engine of
EMTP-RV?
• by allowing the DLL function to access the main system
of equations in the same way as the developer of EMTP-
RV.
3 – Dynamic Link Library and EMTP-RV
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The main system of equations in EMTP-RV is given by:
Where :
Yn : nodal admittance matrix
Vc, Vr and Vd : used to include non-nodal type equations (voltage-defined
equations)
Vn : vector of unknown voltages
iV : vector of unknown currents
In : nodal current injections
Vb : for determined quantities related to voltage-defined equations
n c n n
r d V b
Y V V i
V V i V
3 – Dynamic Link Library and EMTP-RV
THEMIS R26 EL AKOUM Ali
4 – Dynamic Link Library and
TKJ
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4 – Dynamic Link Library and TKJ
The electromagnetic field equation :
Two integration methods on EMTP-RV:
• trapezoïdal ;
• Backward-Euler.
( )( ) . ( )
( )( ) . ( )
j
j s j
f
f f f
d te t R i t
dt
d tV t R i t
dt
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4 – Dynamic Link Library and TKJ
Norton equivalent model of the TKJ :
In this case, the main objective of the DLL is to make these
changes to the main system of equations in EMTP-RV :
• 45 lines and 45 columns are added to represent the machine
( ) ( ). ( ) ( )th thE R I Vt t t t
1,...,2. 2
( ) ( )
( ) ( ) ..
( )
..
B
B R I V
Y Vn qI
th th
t t
t t t
THEMIS R26 EL AKOUM Ali
5 – Validation of the model
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5 – Validation of the model
Validation by comparing the results with :
• The theoretical curve of the machine
• Another program named ESACAP.
In different cases:
• Load
• open circuit
• short circuit
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5 – Validation of the model
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6 – Conclusion and perspective
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6 – Conclusion and perspectives
Conclusion :
• DLL -> New models
• Precise model, more efficient than the models
presented by the stability-studies.
Perspectives :
• Model the mechanical behavior of the machine ;
• Model the thermal behavior of diodes
THEMIS R26 EL AKOUM Ali
Questions ?!
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Thank you for your attention!