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Power factor in electrical generation systems
How to detect & handling Thermocouple failed ckt in Mark V.
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Thank you very much for your responses.
I thought scaledata.dat is for HMI, I could be wrong.
...
By NVK on 3 May, 2013 - 8:20 am -
generally if TC cable opens or tc broke u can get minimum temp as a reading (in 9FA machine our...
If T/C fails (open Circuit), it will read the minimum value in the scale code for the...
Relationship of Power Factor Improvement of Gas Turbine Generators and its Fuel Comsumption
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By Rahul on 3 May, 2013 - 10:00 am -
Yes of course, when u decrease the reactive power, there will be decrease in torque needed by...
which factors effect the reading of compressor inlet pressure
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By SB on 3 May, 2013 - 7:00 am -
Dear Ashiq
If Compressor inlet pressure is raised as per transmitter reading, what is its impact...
I think the gas turbine Ashiq is referring to is Siemens V94.2.
I knew that from the KKS of the...
Synchronisation criterion
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By Neil Rivalland on 3 May, 2013 - 6:03 am -
Although the voltage remains the same when the generators are synchronized because they have to be...
how to calculate the power in MW that drives the compressor...
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hi dear "Process Value"..
how u got these values?
>Enthalpy of VHP steam = 785...
Mk6b control status. status is showing minor difference.
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Dear CSA,
For the servo suicide in distillate fuel mode, we have noticed that the servo coil...
ESKAY,
This is information which was not provided in the original post.
If you changed the...
By ESKAY on 30 April, 2013 - 1:23 pm -
Dear CSA,
Controller showing "minor difference" in m6b file. During our turbine...
About signal conditioning of Velocity Sensor 5485C
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By waltz on 2 May, 2013 - 9:29 am -
Gents, correct me if I am wrong please!
I have always had the understanding that sensors,...
We are commissioning GE Frame 9Es with Mark VI controls. We are the EPC that provide the...
Why tripping given for steam turbine for trip oil
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GM,
If the unit is not under some kind of warranty, you are free to do whatever you want to...
By GM on 1 May, 2013 - 5:57 am -
Thanks CSA for the reply,
what u have mentioned is the oil scheme at my unit. plz suggest can I...
This thread is getting off track. Trip Oil is used on STOP valves, not generally on control...
If the trip oil pressure is not used by the control/governor valves, then the trip oil pressure...
By GM on 29 April, 2013 - 6:19 am -
Thanks for your reply as u have mentioned the same oil is used to lift the control valve. but in...
You really need to KNOW the details of how your system works, electronics as well as the...
Most of the time, same oil is used for actuating governing valves also. Operating with low control...
What is the difference between trip and shutdown in Mark VI
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> Are you sure your set point is 1 in/s and 1.1?
> Our is 0.5 in/s for alarm and 1 in/s...
By Hasan on 29 April, 2013 - 5:51 am -
i think you will find more detail about the answer in both document if you have access to them
...
Air inlet greater than the alarm limit (180 mmH2O)
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You didn't mention what type of air filtration system you are using. Self cleaning (Pulse jet) type...
The Filter Dp is generally being measured using Impulse tubes. LP tapping on Cleanside of the...
Rain louvers are certainly an option, but one has to ask: How long has the site been having this...
By SB on 29 April, 2013 - 11:17 am -
Dear G. Rajesh
Usually Rain louvers are installed at filters house of gas turbine, which do...
Thank you CSA as usual valuable feedback!!
Well, the DP is fluctuating from 110 to 230 mmH2O....
G.Rajesh.
There should be an alarm switch and at least one shutdown switch (which are set...
waiting for your feedback!!
Thank you
G.Rajesh...
Looking for information on Siemens V94.2 Gas Turbine Exhaust Temperature Measurement
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2 Groups of thermocouples represent the combustion in 2 combustion chambers. The difference should...
Frequency hunting in Ishoo Mode
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It is pretty clear that there is some problem with the governor/fuel control on the Iso machine...
excitation control
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By Anil K Panjani on 28 April, 2013 - 2:54 am -
Quite interesting explanation CSA.
I would like to know if there is any possibility of exciter...
We have in our gas turbine frame 7E a problem of failure to start due to starting clutch disengage.
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is this type of clutches recommended from GE?
does it need to configure with MRK V and VI?
i...
I have assisted with installations of the SSS clutch on some older Frame 5 units replacing the...
Communication problem with Mark V and EX2000
Need some info on modeling AC generation.
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Dave,
Yes; this has been dealt with before on this site, though there hasn't always been...
Thanks again, this helps explain how we should model the behavior of our machine when connected to...
Dave,
Here's how I would explain your scenario, from a slightly different perspective. When a...
Thanks CSA for your quick and detailed response.
I'm glad that my understanding of it is at...
Hello, Dave,
(Wow--that was a deja vu moment! Like something out of '2001: A Space Odyssey.')
...
Would you say that testing of interposing relays is important outside of the nuclear industry?
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By Sam on 26 April, 2013 - 3:35 am -
Interposing relays are used all over the world in all industries but I have never felt the need to...
How to determine the current and voltage asymmetry settings for a generator protective relay.
When we try to put the machine to turning we get the following trip "Starting means turbine shaft fail to break turbine away"
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By suhail on 24 April, 2013 - 12:15 pm -
Dear all
We have experienced the same problem with G.E ms9001 E (frame 9) turbine where the...
Why does a core (say for ex of a transformer/or an alternator) saturate?
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By d- on 24 April, 2013 - 9:05 am -
It can occur on secondary short circuits (arcing), or on no load conditions if power factor...
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