Search results

Bill, This may help you with your understanding of IBH and IGV interaction. IBH is a VERY poor name for the function that it provides--as MIKEVI says, it's purpose is to reduce air flow through the compressor when the IGVs are closed below 57 DGA when the axial compressor is at rated...

demigrog, Thanks very much! I'll start looking around for ActivePoint documents, but if you find the GE brochure or something else you can share, can you post it to a web sharing site or DropBox or OneDrive or similar and share the link, please! Again, thanks!!!

So, I've seen some amazing things done with off-the-shelf and inexpensive components, even in redundant configurations--but the key was NOT the hardware or even the software. It was in the experience and expertise of the people designing the system who understood the process(es). These people...

davidmcc, There's really not a lot of information here. How was the panel powered down; that is, was each processor powered down from the <PD> core before 125 VDC was removed from the entire panel? How was the panel powered-up after 125 VDC was restored to the entire panel? Was any worked...

Bill, When you enable Pre-Selected Load Control the Mark V WILL NOT jump the fuel to immediately make the actual load equal to set point, so if the unit is operating at 85 MW at Base Load and you want to lower the load to 80 MW just change the Pre-Selected Load Control setpoint to 80 MW (from...

demigrog, Is all of this holistically developed methodology documented in a GE publication? Thanks!!!

Bill, Yes; GER-3620R is pretty chock full of egg-head, ivory tower stuff--and it's a "one size fits all" document, meaning that it's written to cover most GE-design heavy duty gas turbines, from Frame 5s to Frame 7 FAs and maybe even the H-class stuff by now. It can take some time to sift...

Bill, I don't have access to any drawings or manuals at this writing, but there are combustion mode reference temperatures (TTRF1, usually) that are used as switches for changing combustion modes--usually. You need to find out what the values of the Control Constants are that TTRF1 is...

iqbal5903, I'm not familiar with the H25 machines and precisely what might be the reason for the loading rate restriction(s). Most of the GE-design B/E heavy duty gas turbines (so not F-class machines or H-class machines) could be loaded from zero load to Base Load in as little as 30...

jorgen, The most likely problem--given the information provided--is in the metering CT circuit for the newest generator control system. There is something amiss with the polarity of the signals being provided to the new excitation control system. The "excitation droop compensation" circuit...

>https://www.scribd.com/document/36801384/Governing This site (scribd.com) wants personal information and eventually money to view documents. Is this document available somewhere else for free and without giving personal information,such as a web-hosting site (like tinypic.com) or Google...

The most likely problem--given the information provided--is in the metering CT circuit for the newest generator control system. There is something amiss with the polarity of the signals being provided to the new excitation control system. The "excitation droop compensation" circuit is...

Isulamu, GE (or rather their lawyers) believes as the OEM/designer they are obligated by law to"provide" you with the all the"latest and greatest" software and hardware required by technical regulations and laws--even if they aren't sure what those are in your country. $IL-instrumented...

Hey guy, >Here is my problem. So in an islanded power system running >with one generator (300 MW with 5% droop, setpoint at 150 MW >@ 60 Hz), an added load cause grid frequency to drop. >Governor arrest frequency decline by ramping up steam flow >to generator according to droop setting...

briq, > So what should we do in cable that has daisy chain to <R> > <S> <T> ,such as VARC? I believe VARC is the DENET. > And also JL cable that connect from <X><Y><Z>? Not familiar with that one, and I don't have access to my Mark V manuals at this writing. > Are there any GE...

>Why??? Because there would be limited spare parts in <S>, <T> and <QD1>, AND if they can't get a READY TO START because of a problem with one of the TMR components they could start as a SIMPLEX. I'm not going to go into the details of every step, but here's the outline of what has to...

Dfoster, Thanks very much for the feedback!!! If you haven't already done so, now would be an excellent time to make an Acronis image of the entire hard drive for future reference/restoration. I also create back-ups of unit-specific directories and files on another area of the hard...

bil07, >88QV-1 &-2 shut down? because of some problem like thermal >overload, A thermal overload of an electric motor is caused when the mechanical load the motor is requiring more amps than the thermal overload is designed for. So the question is: Why does the mechanical load for the...

bil07, I'm sorry, but you are not clear with your problem statement. And, what is 88QB? Is it a second AC motor-drive L.O. Pump that only operates when the unit is on Cooldown? I am familiar with 88QA--the Auxiliary L.O. Pump, and some machines without an accessory gear have an 88QA-2, or...

I'm sorry, AAKhan. I can't help you with your issues.