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We come to Control.com for answers to questions like this for the simple reason that GE didn't document things properly, not in the beginning, not when they changed, basically, just never. And the fact that adding the signal to Workbench was forgotten in the original write-up is proof of how...

I was wondering how WorkstationST Alarm Viewer played into this.... ToolboxST is the "origin" of Process Alarms. WorkstationST Alarm Viewer is how they get displayed--and announced???--on the GE Mark* HMI. And, doesn't that (WorkstationST Alarm Viewer) control the HMI CPU and sounds when alarms...

You should also be checking and verifying things like IGV LVDT calibration (very important at Base Load), compressor bleed valve integrity, and IGV and axial compressor cleanliness. AND exhaust back pressure--if the HRSG and/or stack are limiting exhaust gas flow the turbine isn't going to be...

Tresa Aglis Salawasna, Even if you have a Turboline turbine control system on your GE-design Frame 6B heavy duty gas turbine it most likely was configured and programmed to control and protect the unit in accordance with standard GE practices. That's a guess, but a reasonable one. Be that as...

Atteya, We would have to know a great deal more about the steam turbine control system, number of controlled extractions, and type of actuators, AND about the excitation system (brushless; brushed; static; etc.). We would also need to know the nature of the load(s)--inductive, resistive...

This should be interesting!

I agree with glenmorangie; you need to do some studying. The exhaust temperature control ”curve” has a negative slope--and is the opposite of what happens to exhaust temperature as the machine is loaded up to Base Load (at Part Load, exhaust temperature increases as load increased). When the...

Cheedee, To change a value on a CIMPLICITY display one uses a program called CIMVIEW.EXE. But, editing CIMPLICITY displays is not easy or straightforward, nor is it well documented. GE has used many different schemes over decades for creating CIMPLICITY displays, and didn't properly document ANY...

engimad, The subject of how AutoCalibrate works and procedures for using it have been covered MANY times in MANY previous threads on Control.com. For AutoCalibrate to work properly one must know what the position of the IGVs is at BOTH the mechanical stops (closed and open) and those positions...

Usually the differences in GE LVDT part numbers are related to things like effective stroke (length of linear output), size, lead length, bolt pattern, etc. To answer your implied question, you probably can't interchange the two LVDTs simply and easily. Only you can see and know what the two...

ControlsGuy25, yes the omniscient telepath comment was my feeble attempt at humor. I'm frustrated and annoyed at this thread and the original poster. He's in over his head, and he's listening to people who don't know and can't explain what they are talking about. Never mind their use of terms...

glenmorangie, Your comment is missing.... All I'm seeing is that you quoted ratm. ratm, This is the last time. Let's say a machine has 4% Droop (typical of GE-design heavy duty gas turbines as supplied from the "factory"). TNR is the turbine speed reference--this is the command that the...

ratm, Good on you for reading other threads on Control.com! However, this particular thread is not a good one to be trying to learn from.

ratm, If the people at the site where you collect your pay want to call something by whatever name(s) they choose--you should adopt their terminology. Many other sites around the world use different terminology, and ControlsGuy25 (being the omniscient telepath he is) and I were simply trying to...

AAkhan, Many thanks for the feedback! We are very happy to hear you have involved the OEM in the troubleshooting and problem resolution, and that you have a work-around for the time until the repairs/modifications can be completed. We wish you continued good luck with safe operations until the...

If the unit is not under manufacturer's warranty, you are free to make whatever changes you are comfortable making--as long as you fully understand the risks and accept them. Speaking of the manufacturer/supplier of the pumps, have you discussed this issue with them to get their input and...

If the unit is dual fuel, there is usually a solenoid-operated valve which can control the amount of air that is directed to the Main Atomizing Air compressor (more air when running on liquid fuel; less air when running on gas fuel). This would be clearly shown on the Atomizing Air P&ID (Piping...

AAkhan, When did this vibration problem start? In other words, how long has the turbine been commissioned and running without this vibration problem, and how long ago did this vibration problem start? What happened, operationally or mechanically or maintenance-wise (maintenance outage; pump...

ratm, When you read and study the Droop Speed Control threads you will discover that turbine-generator speed (and frequency) when synchronized to a grid with many other generators and their prime movers is controlled by the grid frequency--because generators synchronized to a grid MUST all run...

ratm, I think you have some concepts a little mixed up. But, let's try to get at what appears to be your main question--based on the subject of this thread you started. If your plant is connected to a grid utility with a load larger than the capacity of your plant then the plant can produce...