Voltage Stability Study

[bettoni]

I´m working on a Voltage Stability Study of the Costa Rica´s Electrical System. The study is about developing a methodology for calculating the expected and actual MVAR margins for voltage stability. Also the study implies founding critical contingencies for voltage instability, V-q curve generation, interface stressing, etc.
We´re using EPRI´s VSTAB program. This program uses the fast decoupled powerflow method BX. Our power system is longitudinal -I mean not fully meshed-.
There are three basic regions: North -generation region-, Central -load region- and East -generation Region-.

I´m experiemnting a problem when stressing the interfaces between regions because the bus voltages drop a little portion and then resitute after every chance I redispath power and stress the interfaces, and I can´t develop any PV curve analysis.

I wonder if there´s someone who has some experience in using EPRI´s VSTAB program and can give me some tips. Please answer and I can give more details.

 

[Dopler]

Try this people, they have worked with stability studys.

Dr. Ernesto Vazquez Martinez
Professor
Electrical Engineering Graduate Program
Universidad Autonoma de Nuevo Leon
P.O. Box 89F, San Nicolas de los Garza
66450, Nuevo Leon, Mexico
Phone: (52)(81) 1052-3317
Fax: (52)(81) 1052-3550
evazquez@gama.fime.uanl.mx

 

[luis2107]

Hello,

I recommended you two things:

a) Contact the software developer, they are usually very nice people, who know very well their product and when you buy a software some technical support is always included.

b) Another option is to contact a person who uses the software, his data are:

Dr. Daniel Ruiz Vega
CFE-UIE
Mexico
email:drv_liege@yahoo.com

He has worked with this software tool in several projects recently.

I hope this helps you!

Regards