×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Cogeneration

Cogeneration

Cogeneration

(OP)
Can anybody provide any useful link on operation of STGs or CGTGs in parallel with a Utility Source? I am trying to get information on how the generators are being controlled in parallel with the Grid and what basic control and monitoring parameters required.

GO PLACIDLY, AMIDST THE NOISE AND HASTE-Desiderata

RE: Cogeneration

Engines in parallel with the utility will not vary in speed, so you need a loading control to monitor power output to bias the speed controller up or down to maintain a specified power output.

Woodward is the leader in this area (at least for smaller generators).

Connecting to a utility has quite a few headaches and load control is one of the least problematic.

jtkirb

RE: Cogeneration

Different utilities require different protective relaying packages so it would behoove you to check with the utility in question.  Many utilities really, really, do not like to parallel.  We have a 12 Mw co-gen plant that has been operating for almost 15 years now at a local hospital and the local utility hates us.  They are under a grandfathered contract that sells power back to the utility when the loads are less than the generated power and the utility has to buy it back at a "deferred facilities" rate which saves the hospital a ton of money on their annual energy costs.

It is also helpfull for the system payback if you have a good use for the heat energy developed by the co-gen plant.  Much of the hospital's steam load, and chilled water load is fed from the co-gen plant in our case.

I don't know your location, but in our area, (Southern California) , an extremely knowledgeable source for the switchgear and controls is Russelectric.

RE: Cogeneration

Most genset manufacturers can do this very effectively. Some things to consider are do you want base load or peak lopping, do you want it to run island mode when grid fail, do you want auto re-sync on grid returns. Do you need non critical loads to be removed during grid outage. Do you want to export or prevent export. All these things are standard (although costly) in all industrial genset providers. i.e cummins, cat , jenbacher.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources