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otised makes a great point about decreasing steam temperature.

Stephen Roche, Based on the signal names (the 'L' suffix at then end of the signal names you quoted) I might suggest that your turbine's logic was modified. I'm going to presume the 'L' suffix stands for 'Lower', which would be the unloading rate. Without being able to see the...

vpsopm, Your question can only be answered by the people who are responsible for the operation of the plant at your site who should be experienced and capable of analyzing and understanding the events and how they believe the plant should be operated. If the plant doesn't have this kind of...

Have you looked at: http://pvbrowser.org Open Source and can do OPC XML-DA

Izhar, GE-design Frame 9E heavy duty gas turbines previously used hydrogen-cooled generators which were physically much smaller for the same rating. The rotors of hydrogen-cooled generators versus those of air-cooled generators for the same rating are much lighter and smaller, so the bearings...

Neo, Do you want to answer the question about servos, or do you wish to continue with the Protective Status trips? Maybe it would be best to open another thread for the servo question(s)?

vpsopm, This could be one of "those" conditions that was never envisioned by the plant designers that happens only when the planets are aligned in just the right way. (And, usually, if it happens once it seems to happen again. And again.) It's really difficult to say what should have...

SteveRoche, Unfortunately, GE uses the same Control Constant for unloading as for loading when in "Auto" mode--in almost every case. So, if you change the existing "Auto" loading/unloading rate to make the unloading rate faster for the shutdown, it's also going to be faster when loading...

Izhar, Thanks for the correction. And the feedback. 111 A on a 6.3 KV motor seems high, but with an air-cooled generator GE Belfort probably felt the extra HP/torque was warranted during breakaway and starting. It's very ..., interesting that the unit was starting fine before the...

Hi, This is such a great question!!! I think all of us when we were learning the basics in primary and secondary schools had this very same thought--how is this stuff actually used in the "real world?" The fact that you, RLovell, actually listen to the students and are trying to find examples...

Dear Izhar, It could also be that 20TU-1 (the torque converter "pressurizing" solenoid) is intermittently failing, though that wouldn't explain the tripping. The tripping could be that somehow the torque adjustor limit switch for max torque is out of adjustment (set too high) and it's...

Neo, I thought we'd covered the L14HSX before. So I'm kind of surprised about how it was misread. I'm getting more confused by the thread; this is getting quite disorganized--not at all what I'd envisioned when we started this journey of discovery. Anyone coming along later will surely...

Dear Izhar, I have re-read the original post and am curious about the starting means trip alarm being experienced. As noted previously, the current drawn by the starting motor is much higher than nameplate rating (and that is normal and expected--though anything above approximately 170% would...

RigMan, A generator is a device for converting torque into amperes. Torque is produced by the prime mover--the engine is this case. More fuel equals more torque. The generator just converts torque into amperes, so there must be something amiss with the engine governor or the fuel pressure...

> The MKV is capable of Manual FSR. CuriousOne, Manual FSR can be used to decrease FSR, but not to increase it. From the information provided, it would seem FSKSU_AR is limiting the fuel for some reason. Either there is a flow restriction in the fuel supply (plugged filter and/or...

saha, The first question to be asked is: What has changed? Why is the unit now experiencing this problem, because it's likely that it didn't have this problem in the past (a Mark V with an <I> is pretty "mature" (a polite way of saying it's getting older)). Has the fuel supply changed? Is...

Dear, Try searching control.com with the term: "+torque +converter" (with the double quotation marks) for more threads with similar issues. Note that if the Frame 9E at your site uses jacking oil (lift oil) for the generator bearing, be certain that it is working correctly...

Dear, Is the generator hydrogen-cooled or air-cooled? Does the unit have a hydraulic ratchet for Cooldown? (If not, what kind of Cooldown method is used: Slowroll, or Turning Gear or ???) Presuming someone can supply the required starting torque, how will you measure the actual starting...

Manoj Dubey, Hmmm..... Seems someone didn't like my response. Let's assume the turbine was operating by itself with no other generator-sets synchronized with it, the load on the generator is nearly purely resistive (it has very little, if any, resistive component) and that the prime mover's...

Sagar, All the generator prime movers do NOT need to be running in the fixed load setpoint. And, only those generator prime movers whose output is above zero and below rated AND are operating in Droop Speed Control mode will respond. Think about a very large grid, with hundreds of...