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Control.com topic...
Power Generation
Topic: Power generation equipment control.
from the Power generation department...
Generator and Capacitor Bank
Originally posted by fluidflow on 22 July, 2014 - 1:04 am
Totally stumped by the recent brawl over utility of capacitor bank in power generation.
New Replies:
Some useful information. Take care G.Rajesh...
FF... Please play particular attention to Candl_Pete's excellent post. He was able to illustrate...
FF, further to my earlier post, see the following Control.Com thread: ...
FF, problem is clearer. Following is a summary, based on information provided to date: A)...
FluidFlow... Do you want me to answer you directly, via control.com, or both? Phil...
Dear Phil On the undermentioned thread, discussion had taken place earlier but no conclusion...
Dear Phil, I have send you the single line diagram via email. Subject: Fluidflow sending...
FluidFlow... can you send me a simple Single-Line-Diagram (or hand-drawn sketch) that relates how...
Hello Phil, The problem or dilemma is still persisting. Senior Manager is telling that...
Topic: Power generation equipment control.
from the Operations department...
Steam turbine shutdown
Originally posted by C. Reihl on 25 October, 2014 - 7:52 pm
What is the proper sequence for shutting down a combined cycle plant? Gas turbine or Steam Turbine first?
New Replies:
Hey! At our 2x1 plant we have 2 GE MS7001FA's exhausting to HRSGs that provide steam to an...
this makes no sense to me! How do they maintain enough steam to operate the turbine? Do they close...
I'm an combined cycle operator and We shutdown the steam turbine before the Gas turbine. the reason...
Topic: Engineering and workplace issues.
from the Forum department...
Grounding Current Transformers
Originally posted by gautam on 29 October, 2014 - 1:17 am
Need for grounding of secondary terminal of current transformer.
New Replies:
Gautam... Q1: The ground-terminal protects endangerment of human life if there is a...
Topic: PLCs and related questions.
from the Maintenance department...
Issue with a Siemens 331 AI card
Originally posted by Chris on 28 October, 2014 - 8:31 pm
Experiencing an issue with an output on an AI card. Have a valid analog signal from the field device to the remote I/O PLC, but nothing from there to the control PLC.
New Replies:
Hello David, Thank you very much for the response and I apologize for the lack of information...
You haven't told us what kind of signal is coming from the level transmitter (presumably 4-20mA),...
Topic: Communications systems and equipment.
from the Solar department...
Modbus Training Courses
Originally posted by Kyle on 19 December, 2013 - 9:37 pm
Looking for Modbus training courses
New Replies:
I created a course on uDemy called Mastering Modbus RS485 Network Communication for persons wanting...
Topic: Power generation equipment control.
from the Thermal Engineering department...
Thermal Efficiency Improvement of a Combined Cycle Power Plant
Posted by Sreesankar J on 29 October, 2014 - 3:18 am
Thermal Efficiency Improvement of a Combined cycle power plant by absorbing excess Flue gas temperature without altering any design parameters.
Topic: Power generation equipment control.
from the Forum department...
Changing SRV Valve setting
Originally posted by 8784597 on 16 October, 2014 - 4:28 pm
I need help to change the set point for SRV open position.
New Replies:
rwailikhalid, FPRG is a control signal database signal name for P2 Pressure Reference (Fuel...
where i can find FPRG?...
Topic: Power generation equipment control.
from the Power Generation department...
Gas Turbine control - Hardware Part Trip of L4
Originally posted by Neo on 19 October, 2014 - 8:02 am
When Hardware causes the trip of L4
New Replies:
Neo, I'll try to answer your questions, but I'm not clear on at least one of them. Yes; you...
Very happy to see the detailed discussion. Go ahead for great success. Take care G. Rajesh ...
CSA: I read and reread your response,and it really helps! And thanks for your drawings. ...
Okay, Neo, It's important to note that the fuel stop solenoids of GE-design heavy duty gas...
CSA: > So, I'm taking it that you're satisfied with the L4 rung (<Q>...
Originally posted by mohanad on 26 October, 2014 - 1:48 am
I want to send a signal via MODBUS to Emerson DCS
New Replies:
CuriousOne, If I only had a nickel for every time I have heard that refrain I would be a very,...
It is a simple as changing a couple of text files and restarting interfaces....
It's not really clear what mohanad is asking. It could be that he wants to establish an entirely...
We recently converted from Mark5 to Mark6e. We had an existing link to Ovation already. Previous...
The Mark VIe is a control system that uses I/O, so I'm assuming that you don't need data...
Topic: Power generation equipment control.
from the Instrumentation department...
Mark V A6 state
Originally posted by G.Rajesh on 22 October, 2014 - 12:33 pm
Mark V <C> at A6 state after modify and download IO.ASS and IOCFG
New Replies:
Thanks Bob for your feedback. No we couldn't locate the card as when it was at A6 and found...
Did you find out which card in <C> core was not reaching A6? It is possible that a field...
Additional to the above, ribbon cables between CTBA and TCCA has been removed, cleaned and fixed...
Yes, for us to it's strange behavior but no other clue, how it resolved. Take care G.Rajesh...
G.Rajesh, Hmmm.... I have never encountered a field wiring problem that caused a processor not...
Topic: Engineering and workplace issues.
from the INSTRUMENT department...
Grounding Problem in Siemens DCS
Originally posted by RAJESH on 26 October, 2014 - 4:50 pm
In DCS panel the resistance measured between power earth and signal earth vary from 24 ohm to 160 ohm in different panels.
New Replies:
My apologies, I see now that I misread your post. You should not have that much resistance...
You need to be specific not only with the resistance magnitudes you describe but also how you are...
> resistance between power earth and signal earth is varying from 40 ohm to 120 ohm. It...
Resistance from cabinet instrument ground to ground connection in earthing pit 100-200 milliohms. ...
Topic: Power generation equipment control.
from the DLN combustor department...
Humming in DLN combustor V94.3A
Originally posted by GTEGAT on 3 June, 2009 - 2:14 am
How to fix the humming in combustion chamber when Gas turbine is loading or unloading.
New Replies:
Your GT should have low frequency humming (10-30Hz). If it is the case you should check if the...
Topic: Power generation equipment control.
from the Protective Relaying department...
Transformer Differential Relay Protection during Open-Phase
Originally posted by Amrit Pandey on 17 October, 2014 - 4:55 pm
Transformer Differential Relay Protection during Open-Phase. Possibility of the relay to trip during line to ground fault or open conductor outside the zone of the differential scheme?
New Replies:
Phil, I am emailing you my excel sheet and wiring diagrams. -Amrit...
Amrit... Would you mind sending me a copy of your calcs? Phil...
Phil, Thanks a lot for your help. I agree with you. I was initially not able to evaluate the...
Amrit... OK! Then to summarize, neither phase or ground-fault differential protection can...
Phil, Not completely certain however, I would believe you would want to detect an open-phase...
Posted by Controm on 24 October, 2014 - 7:23 pm
At CRM1/2_SVR we read DCS data in Toolbox ST but not in Cimplicity. What can be the cause?
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