Search results

You haven't provided enough information. When a turbine is new and being commissioned, the manufacturer/packager have the right to determine during commissioning what final parameters will be used for control and protection of the unit. And, this only makes sense--they own the warranty and...

Small detail, but, does this happen on only one of the four units, or all of them? Also, when the units transitions to Lean-Lean Positive, what happens to the load when the secondary flame intensity is very low? Does it decrease, or stay the same? Because when fuel is split between the...

Kevin, Please don't be in such a rush to start changing things; it could be a relatively simple fix. First, I'm confused because your original post seemed (to me) to indicate that the instability lasted for ten seconds--but the unit remained synchronized after the instability. Now you say...

To ignite flame in the combustors of a GE-design heavy duty gas turbine the following three things are necessary: 1) Fuel 2) Air a) Combustion Air (from the axial compressor discharge) b) Atomizing Air (from the Booster AA Compressor) 3) Spark That's it. Of course they...

Greetings, When you post here at control.com for information such as this (to understand difference between to machines) it's most helpful--and expedient--if you will include as much information like you have below in your original post so that we can provide the most concise and appropriate...

Phil Corso, What basics of synchronization would you think it would be be helpful for Kevin to understand or review to help him with this problem? Where can one find the formula for calculating this, or can you post it here, or give Kevin your email address and requirements for taking this...

Hi, First, I am asking if the wild load swings have always occurred when the unit was re-synchronized to the grid or if this is a relatively new problem. Second, I'm asking if synchronization occurs with the governor in Isochronous or Droop Speed Control--and when and how the governor is...

karthikprabu, White vapours coming from the exhaust stack would indicate that fuel is flowing to the combusors but there is no ignition. White smoke (thicker and heavier than white vapours) would indicate incomplete combustion in one or more combusors--but should be accompanied by a rise in...

2 kg/cm^2 equals 28.45 psig, which is a large difference in liquid fuel supply pressure. Both machines should have the same liquid fuel supply pressure. Please adjust the the liquid fuel supply pressures to be approximately equal and you should find the flow divider feedback will be more nearly...

How about the most basic question: Does this happen every time the gen-set is synchronized to the grid? What mode is the governor in during synchronizing; Isoch or Droop? If the unit is in Isoch at the time of breaker closure when--and now--does it get switched to Droop (manually or...

fresher, Your question really isn't clear. There are lots of World Wide Web articles and explanations about power factor and reactive current. Have you tried researching using your preferred Internet search engine? A grid can be considered like one big generator supplying on big load...

AMS, Analog control systems are not nearly as reliable as their digital counterparts have proven to be. And, <b>based on the information provided,</b> it now seems as if Isoch control was working before the "calibrations" were performed. And, calibrating analog control systems is much more...

bkarim55, SOOO MANY questions. I've been to sites where the filters had to be replaced every six months, and others where they lasted for a decade or longer. It's <b>NOT</b> about time---it's about site conditions (how the turbine is operated; how much humidity is present; what the nature...

GASCO, Toolbox and CIMPLICITY are applications which use files which are stored on F: drive. They don't install any files on F: drive when they are installed. Installing Toolbox or CIMPLICITY doesn't create F: drive or populate F: drive. That's done by GE or the packager of the equipment...

Neo, I've not forgotten about this thread. I'm traveling (outage season--so long hours and lots of schedule over-runs) and I'm trying to "draw" and it's time-consuming. Bear with me. I think it will be worth the wait.

Green_Man's comments are excellent. As for WinSys, I can only surmise that it's some kind of MS-Windows service that's required for communication between the HMI and a Mark LM panel. The Mark V LM panels use a Real-Time OS (RTOS) which is not MS-Windows (it's some flavor of QNIX, I...

AMS, The thing all of the issues you describe have in common is: the hydraulic system. Not the servos, the hydraulic system (except for the inlet air filter problem). And, speed sensing. All of the loops--including the liquid fuel system--use speed sensing. It's not clear what data you...

Jeffchye, Just out of curiosity, why was the decision made to replace the CPU in the first place?

A. Saad, I sincerely hope no one responds with the signal names you are requesting Forcing logic to prevent a turbine trip can cause serious damage, personnel injury--and even death(s). Please reconsider your plans and take safe actions to resolve the issue(s) without forcing logic to...

AMS, If the P2 pressure transducer was not indicating the proper pressure before it was replaced (if the actual pressure was higher than indicated) then the VCE would have been lower. P2 pressure has an effect on Gas Contro Valve position and reference (VCE). It was not necessary to...