Steam turbine with MkV HMI WinNT on an island grid that has frequency fluctuations.

We have a historian to analyze power system disturbances, but the resolution is 1sec which is too slow.

I'm familiar with View2.exe and can use it to catch the information I need, but I do not know when the system disturbances will occur and somebody will have to continuously "re-start" the program.

In the MkV manual I see a description of View2t.exe which is supposed to run a circular memory buffer continuously and then write the data to a file when a trigger occurs. I remember the GE TA talking about this on his last visit.

From the manual it appears that I need a logic trigger to initiate the "write" of the recorded data. Does this sound correct?

I'm asking for suggestions or input on how to get the data I need for a few seconds surrounding an fast transient during system disturbances.

I know the points I need (RPM, V1, TPWR, etc), but how would I create a "trigger"? I guess I could create my own logic block that monitors system frequency and if it deviates quickly, do a "trigger".

The idea would be to leave the view2t.exe run in the background continuously and catch events. Am I on the correct path?

 

Type

VIEW2T /

at a command prompt to get a "Help" screen. Should be pretty self-explanatory.

 

View2T is pretty self explanatory in the documentation. I understand that. I was looking more for information regarding setting up a logic point to trigger the view2t.

Regardless, I got some input from the GE TA that visited our site. He said I will probably have to add a comparator in the sequence to create a logic for the View2t to trigger against.

Just following up for others to see.

 

That should be:

VIEW2T /?

 

If there is no existing logic that changes state at about the time your event occurs, then, yes; you'll need to create one to use as a trigger.