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samson16, You haven't told us where you obtained this "simulator" and what it is comprised of. But, unless the software running in the "Mark VI" portion of the simulator has been configured to simulate hydraulic actuators and LVDT feedback during calibration (which most of the simulators...

Is this something which has worked previously in the past, but recently stopped working? If so, what was done to the HMI just prior to the point at which it stopped working? If this is something you are trying to implement for the first time on this unit, you'll need to provide all the...

Until the OEM or packager provides proper documentation of how wheelspace temperatures are measured, and what affects wheelspace temperatures, and people actually read and comprehend the documentation--people will still be asking the same questions and people will still be answering the same...

Dear Sir, Is it needed? No. Would it be helpful? Probably. I've never seen a GE-design Frame 7EA heavy duty gas turbine with torque converter guide vane position feedback, so any animation would only be an indication that the turbine control system was commanding the torque converter...

niazbibiyana, What is the differential at lower loads, before the unit transfers into Premix? Is it very near the high differential limit? Has the differential been increasing over the last few days/weeks/months? Whenever a problem like this comes up, it's always best to understand what...

Just because one is using a Mark VI "simulator" (there are several versions of the "simulator) doesn't mean any of the usual processes and procedures are different (other than the difference between a TMR and a SIMPLEX Mark VI). The Alarm Display function on a Mark VI "simulator" is still a...

Just because one is using a Mark VI "simulator" (there are several versions of the "simulator) doesn't mean any of the usual processes and procedures are different (other than the difference between a TMR and a SIMPLEX Mark VI). To perform an LVDT calibration on most--but not all--Mark VI...

grajesh, If you're using OEM switches, or the exact same switches as provided by the OEM, it's pretty unusual for them to fail due to high temperature--UNLESS the temperature in the turbine compartment is abnormally high. That could be because of leaks of hot air/combustion gases into the...

niazbibiyana, You're welcome; I hope everything is clear(er) now!

niazbibiyana, When a GE-design heavy duty gas turbine with a Speedtronic turbine control system is operating anywhere between zero load and Base Load (CPR-biased exhaust temperature control) it is operating on Droop Speed Control ("straight" droop speed control, or Constant Settable Droop)...

Hello, I don't know if there's a way to visually test for this phenomenon--I've never seen one performed, and have only read about the phenomenon in trade journals and literature. Varnishing is not usually the result of a single condition; it's usually a combination of things. Was the...

bulldog1, The basic formula for electrical power is:<pre>P = Vt * Ia</pre>where P = Power (watts; kW; MW) Vt = Generator Terminal Voltage Ia = Generator Armature (Stator) Amperes For three-phase AC (Alternating Current) power, the formula is:<pre>P = Vt * Ia * 3^0.5 *...

kwaku, Thanks very much for the kind words. Certainly, load swings are not good for the turbine. They result in thermal stresses on the hot has path components, as well as physical stresses on the compressor and load couplings, as well as on the Accessory Gear and components. But...

niazbibiyana, So, I can hear the wheels of thought grinding away. "If we can't use Pre-Selected Load Control (or External Load Control, or Remote Load Control), how are we to operate the turbine and change load and maintain load?" Droop speed control uses the error between the Droop Speed...

When did this problem start? It's likely if the units were running without problems for some time, and then after some repair or modification or maintenance work the problem started, then something was disturbed in the wiring between the generator excitation (AVR) control systems. The area...

isulamu, The new terms are those of the original poster; they're nothing I've ever seen before in more than 30 years in the business. Nothing like an automatic gain change. What part of the magnitude of current affecting the servo valve position which in turns controls the flow-rate of...

Mund123, The three values you listed were Control Constants. The fields you are looking for are not Control Constants, rather, they are commonly referred to as I/O Configuration Constants. Control Constants are used in application code (sequencing; logic; programming); I/O Configuration...

And, it was W. Edwards Deming, who gave that perfect bit of wisdom. Sorry, Mr. Deming! Unless that unit is "special" the IGV angle when it's shut down should be approximately 32-34 DGA, if the mechanical stops are set correctly AND the LGV LVDTs are calibrated correctly. 0.8 barg (7.15...

Mund123, None of those are related to the self-adapt correction feature. As I said, one usually has to do a lot of digging in ToolboxST to find the settings. You might try looking where the generator breaker close output is defined. I don't have a copy of ToolboxST--and a UPD (a USB...

asarhan and kwaku, Thanks for the feedback--it's always appreciated! And, glad to have been of help!