Recording power (kW)
Recording power (kW)
(OP)
Hello all. I am presenting to you what may seem to be a fairly simple question but poses more difficulty than first thought.
I am in the process of commisioning a Cogeneration plant and have recently performed a series of load simulations using load banks for the purpose of determining the great load step the plant is capable of handling within a +/- 1HZ restriction. Now I need to understand the production facility loads in terms of load steps that would exceed this know acceptance criteria. I currently have a summit meter in place recording power but the resolution is at such that I am only able record at 30 sec. intervals. My original intent was to have this meter in place for a 30 day period capturing events that were just lower than the cogeneration allowable load limit.
I now plan on looking for routiness of load changes throughout a daily window and then focusing in on those areas where loads appear to be at the area of capture intent. Then I would set the meter to record over a shorter duration and increase my resolution.
I am hoping to get the most out of this data so I am asking for input as to suggestion that may lead to an optimal solution.
Let me know what other information may be of importance.
x2 2.1 mW natural gas lean burn Waukesha's
4160 VAC
building average loads are 3.1 mW daily.
a single engine can take up to 150 kW one step load application and maintian +/- 1 HZ.
The load step criteria is only important when the cogen plant is in an island condition (utility loss).
I am in the process of commisioning a Cogeneration plant and have recently performed a series of load simulations using load banks for the purpose of determining the great load step the plant is capable of handling within a +/- 1HZ restriction. Now I need to understand the production facility loads in terms of load steps that would exceed this know acceptance criteria. I currently have a summit meter in place recording power but the resolution is at such that I am only able record at 30 sec. intervals. My original intent was to have this meter in place for a 30 day period capturing events that were just lower than the cogeneration allowable load limit.
I now plan on looking for routiness of load changes throughout a daily window and then focusing in on those areas where loads appear to be at the area of capture intent. Then I would set the meter to record over a shorter duration and increase my resolution.
I am hoping to get the most out of this data so I am asking for input as to suggestion that may lead to an optimal solution.
Let me know what other information may be of importance.
x2 2.1 mW natural gas lean burn Waukesha's
4160 VAC
building average loads are 3.1 mW daily.
a single engine can take up to 150 kW one step load application and maintian +/- 1 HZ.
The load step criteria is only important when the cogen plant is in an island condition (utility loss).






RE: Recording power (kW)
They have signal transducers, signal conditioners, transmitters, PC input cards, software.
I am sure you will be able to find a package that will fulfill your requirements.
Once you have identified the components you require, you may look for more economical second sources of supply.
You can select sigal conditioners and a/d boards for any sampling rate you need and input your data to a PC. You can get a lot of data on even a small hard drive. The last time I looked, they were offering more and more internet ready devices.
respectfully
RE: Recording power (kW)
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Sometimes I only open my mouth to swap feet...
RE: Recording power (kW)
What ever report I generate from collected data at this point will be torn apart by others I'm certain. Which is the real reason I'm asking for help here.
RE: Recording power (kW)
RE: Recording power (kW)
that is exactely the delima. Being able to capture a load step and have the lowest "monitoring interval" possible over a 30 day period. None the meters including the reliable power meter (RPM) can. One, capture the event, and two record for an extended period of time without missing possible occurances. The odd thing is the RPM has a higher storage capacity but the lowest resolution potential. Capturing a load step with a duration of say 5 msec. Does me know good. But since the meter is in place I need to make the best out of the information that I gather. So, I will begin to look at this as an approach to understanding building load.
RE: Recording power (kW)
When you say 'load step', are you referring to the exact instantaneous change from no load to full load? What is it that you need, the actual instantaneous load changes?
RE: Recording power (kW)
yes, instantaneous load changes occuring any time that fall within the >120 kW and last for a period greater than 1 sec.