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K
Main Steam Flow Measurement Using Turbine 1st Stage Pressure Measurement
Check your O&M manual for the turbine. They often have flow curves in them that correspond steam flow to various stage pressures.
krush
Post #3
Feb 10, 2015
Forum:
Instrumentation & Measurement
K
Droop control
This is the best "simple" source I found that explains droop and governing/power system fundamentals. Woodward Reference Manual Governing Fundamentals and Power Management: Manual 26260 http://www.otherpower.com/images/scimages/3409/Governing_Fundamentals_and_Power_Management.pdf
krush
Post #6
Feb 9, 2015
Forum:
Power Generation
K
Turbine Stress Evaluator
This is what the original company that makes the turbine spends lots of time figuring out! If it were very simple, everybody would do it. The basis of loading and temperature change rates is nothing more than good old machine design. As the metal temperature changes, it's size changes...
krush
Post #2
May 6, 2013
Forum:
Power Generation
K
To remove the steam turbine tripping from Trip Oil
We need to know what type of control system your steam turbine has. Also, if you could state the manufacturer that would help. Different OEM's use slightly different control strategies. The responses here look to be mostly for GE units. ALSO: We need to know if you unit is (MHC) mechanical...
krush
Post #9
May 4, 2013
Forum:
Power Generation
K
Steam Turbine Control Valves- GE D11
The wobulator I've dealt with is in place to to make the RPM "wobble" when running the unit at an RPM other than designed RPM (design usually being 3600 or 3000). For example when starting and warming up a 3600rpm steam unit, it is common for the startup instructions to have a hold point at...
krush
Post #6
Jan 16, 2013
Forum:
Control Valves
K
Boiler control
Your desire to learn about supercritical operations is a very large undertaking for this forum. Many of the plant operations are the same, but as you know a supercritical boiler is going to be a once-through. Water chemistry is important. Pressure control is different...usually done with...
krush
Post #4
Dec 30, 2012
Forum:
Power Generation
K
Getting IO into/out of a PC
There are lots of inexpensive USB Data Acquisition solutions (DAQ)...google USB DAQ. I got one back in 2008 for $50 to make a simple little project in college. For example, this company has quite a few options: http://www.audon.co.uk/ However, I reply with a question asking WHY? Modern...
krush
Post #6
Dec 13, 2012
Forum:
Computing
K
Steam turbine extraction valve
>What type of valve is a "steam turbine extraction valve"? Which make actuators are generally used? How does it function?< It depends on the valve design the manufacturer used. I've seen spool valves and grid valves used for extraction valves (GE terms and design). Extraction valves are...
krush
Post #2
Sep 5, 2012
Forum:
Power Generation
K
MODBUS control of power sources and loads
Fair enough. Then sounds like you want a PLC or something of that like. For another example see this link. Obviously other manufactuers may have similar products. Look at the DirectLogic 05 and the ethernet/modbus module...
krush
Post #5
Jul 27, 2012
Forum:
Modbus
K
MODBUS control of power sources and loads
If I understand your problem correctly, it is easily solved by off the shelf components. I know it isn't as sexy as making your own, but it's much less expensive. See links below for some (but definitely not all) solutions. http://www.woodward.com/easygen3000series.aspx...
krush
Post #3
Jul 26, 2012
Forum:
Modbus
K
HP bypass flow in power plant
>I have a question about thermal power >plant. Is HP bypass flow necessary to >control in power plant? If we don't use >it, how do we measure the flow? Your question is not specific enough to give a useful answer. HP bypass is usually found on combined cycle plants. I have yet to see a...
krush
Post #2
Jul 25, 2012
Forum:
Power Generation
K
Gas turbine control system upgrade
The OEM will almost always say that "your system is obsolete and must be upgraded". And the beauty of the world is that there are often independent third party outfits that will still support the old control systems. http://www.gasturbinecontrols.com/ is one that I know of (no affiliation)...
krush
Post #5
Jul 17, 2012
Forum:
Power Generation
K
FSSS CONTROL OF BOILER
I agree with above. He used the term "flame safety". I grew up with it being called "burner management system". Same components, just called by different names. The makeup of the system is usually specified by local or national code. For instance, in the USA a few codes including NFPA...
krush
Post #3
Jul 17, 2012
Forum:
Power Generation
K
Steam turbine overspeed
I do not see the reasoning for 2 to 3 days of operation required before doing an overspeed test. However, I have not seen ever steam turbine in the world and there may be some special reason that the manufacturer stated. Your unit should have a startup curve that has instruction and...
krush
Post #4
Jun 28, 2012
Forum:
Power Generation
K
Steam turbine overspeed
The short answer is YES!
krush
Post #2
Jun 21, 2012
Forum:
Power Generation
K
Opening Vacuum Breaker during Turbine Trip
It's tough to give a solid explanation without understanding what type of equipment the original poster has. Unlike gas turbines, steam turbines are often customized to each plant. Regardless, most turbines usually have some "blow off" valves that open when the unit trips. There is often a...
krush
Post #4
Jun 8, 2012
Forum:
Power Generation
K
Opening Vacuum Breaker during Turbine Trip
In the plants I've been in, a trip did not cause any time of "vacuum breaker" to open. In fact it would be the other way...loss of vacuum (or low vacuum) would trip the turbine.
krush
Post #3
Jun 8, 2012
Forum:
Power Generation
K
sudden axial shift
We need more information. Axial position is controlled by the thrust bearing. If things are moving axially, then it would make sense to start there. However, what makes you say that you had an "axial shift"? Does instrumentation say so? Has anybody physically measured this with instruments...
krush
Post #3
Jun 8, 2012
Forum:
Power Generation
K
Speed of Synchronous Generator
I second....
krush
Post #100
Jun 2, 2012
Forum:
Power Generation
K
GE LM6000 PC Sprint Exhaust Temp
You are welcome. I remember seeing the control philosophy (or limitations) presented in temp/pressure charts, but I can't pinpoint the document. Sometimes having too much information is just as useful as having no information (aka, not useful at all). I keenly remember that LM6000 output is...
krush
Post #5
Jun 2, 2012
Forum:
Power Generation
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