Question on PSSE terminology

asked 2020-07-30 15:45:23 -0600

Jbaker
1 ●2 ●2 ●2

Can someone explain the term ZSORCE, XTRAN, GENTAP please?

edit retag flag offensive close merge delete

add a comment

0

answered 2020-07-31 03:07:29 -0600

perolofl

3332 ●1 ●8 ●19

For a synchronous generator XSORCE is the subtransient reactance, Xd”.

XTRAN and GENTAP are only used if the step-up transformer is not modelled in load flow, i.e. the generator is connected directly at the high tension side.

edit flag offensive delete link

Comments

Thank you. Do you mean XTRAN and GENTAP are only used if the step-up transformer is modeled in load flow? Above you said is not

Jbaker ( 2020-08-04 13:17:06 -0600 )edit

No, I mean what I wrote. You can ignore XTRAN and GENTAP if the step-up transformer is modelled in the saved case. If so, the transformer is already modelled and there is no need to enter the data in the machine record.

perolofl ( 2020-08-07 04:17:49 -0600 )edit

add a comment

0

answered 2020-08-05 04:44:34 -0600

lmcqueen
66 ●32 ●35 ●37

Using XTRAN and GENTAP means you are modeling the generator step-up transformer implicitly (i.e. unit-connected). See the Program Operation Manual for more information.

edit flag offensive delete link

add a comment

0

answered 2020-07-30 18:17:39 -0600

JbFord
1 ●1 ●2 ●1

p.u Generator Dynamic Impedance, ZSORCE p.u. impedance XTRAN = RT, XT on machine MVA base p.u. off-nominal turns ratio (GENTAP) entered in the machine impedance