[Digestion] biogas electricity generation

Tue May 10 08:58:22 CDT 2011

Odd enough, I work for the electricity company!!  And the interconnection is just what we are promoting.  Perhaps its easier because we are vertically integrated and state-owned.  Take a look at our program (sorry, Spanish only):

http://www.grupoice.com/esp/temas/so_plan_piloto/so_plan_piloto_generacion_distribuida.html

I understand you can go two ways for the interconection:  through an inverter or through synchronizing equipment.  But we've had trouble finding integrators providing the necessary engineering, and both the genset and the synchronization/security equipment here in Costa Rica.

I will look into inverter makers.

Thank you.

Jorge.

De: digestion-bounces at lists.bioenergylists.org [mailto:digestion-bounces at lists.bioenergylists.org] En nombre de Alexander Eaton
Enviado el: lunes, 09 de mayo de 2011 10:03 p.m.
Para: For Discussion of Anaerobic Digestion
Asunto: Re: [Digestion] biogas electricity generation

Dear Jorge,

Almost any equipment that produces electricity can be connected to the grid with the proper equipment, however the grid managers are concerned that you have the right voltage, frequency, sine wave and that you have an automatic transfer switch so that you will not continue to put power into the grid when it goes down.  For this, you can get grid interconnect synchroscope that "cleans-up" the power that comes out of your device, and that will automatically shut down if the grid goes (the scenario in which someone working on a line thinking that the grid is down and then gets shocked by the power you continue to put in is what utilities want to avoid).  Try Lactronics, SMA, or Xantrex or anyone that makes inverters or rectifiers.  Also, without this device, as long as the generator you are using is decent and producing the same voltage as is delivered to you, it is probably producing better power quality than the Costa Rican grid.  In theory, you can just hook your generator into existing lines, and if you have an analouge power meter, and you are producing more power than you are using, you will make the meter spin back.  Not suggesting this, just illustrating that connecting to the grid is really not too hard.

The other hurdle more challenging than the technical part is likely going to be getting the power company to sign on...

Best,

A
On Mon, May 9, 2011 at 7:32 PM, Charlie Ramos <cramos at biogreenengineering.com<mailto:cramos at biogreenengineering.com>> wrote:
Dear Jorge Montero,

Check out the Mopesa-60 KW.  It is built in Mexico - http://www.mopesa.com.mx/Biogas.html.  We designed, built, and operated over 300 anaerobic digesters in Mexico and several of them used the Mopesa-60 KW.  We also used the Caterpillar-85 KW that was imported from USA.  I do not remember if either of my suggestions meets the IEEE 1547 (distributed energy) compliance, but you can probably find out very quick by making a phone call to both companies.

Good luck!

Charlie Ramos
Managing Director/Principal Engineer
BioGreen Engineering LLC
cramos at biogreenengineering.com
+1-407-459-7806<tel:%2B1-407-459-7806> (office)
+1-407-437-6194<tel:%2B1-407-437-6194> (cell)

From: digestion-bounces at lists.bioenergylists.org<mailto:digestion-bounces at lists.bioenergylists.org> [mailto:digestion-bounces at lists.bioenergylists.org<mailto:digestion-bounces at lists.bioenergylists.org>] On Behalf Of Montero Arguedas Jorge Mario
Sent: Monday, May 09, 2011 3:41 PM
To: digestion at lists.bioenergylists.org<mailto:digestion at lists.bioenergylists.org>
Subject: [Digestion] biogas electricity generation

Dear listers

We run a quite successful (I think!) biogas program here in Costa Rica, which is growing in the size of the participating farms.  By this time we are trying to produce electricity with the biogas and connecting the generators (with potential for producing some 60-150kW) to the electricity grid within our distributed energy program.  However, we haven´t found equipment for generating and safely interconnecting to the grid (safe from the super expensive Capstone turbines).

Can anyone suggest some other equipment maker ?  Other avenues?   We do require IEEE 1547 (distributed energy) compliance.

Regards,

Jorge Montero
Costa Rica.

Ing. Jorge Mario Montero. MSc
Oficina (506) 2220 7835  /  Fax (506) 2220 8206  /
E-mail jmonteroa at ice.go.cr<mailto:jmonteroa at ice.go.cr>  /  www.grupoice.com<http://www.grupoice.com/>
Centro Nacional de Planificación Eléctrica CENPE
Instituto Costarricense de Electricidad ICE

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Alexander Eaton
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