We have a problem with relays tripping at our power plant.
We believe it may be due to transients but need to make accurate measurements to be sure.
Our current SCADA software (Siemens WinCC) measures 16 points at our power plant, every 500 milliseconds.
I asked the SCADA "expert" why we cant speed-up the measuring intervals to 1 wave for example (20 milliseconds at Hz=50).
He said that impossible because:
"There is not any defined time duration. System reads the data sequentially. It reads the first point,
then reads the second point, etc. it returns to the start point after last point read.
It looks, this sequence takes approx. 500 milliseconds and you cannot change it."
Im not sure if this is software limitation (Siemens WinCC) or of our sensors?
But I believe we can't measure and track down transients accurately with a 500 milliseconds measuring interval.
Agreed?
And what can we do about?
Do we need to change the sensors and/or the software?
We believe it may be due to transients but need to make accurate measurements to be sure.
Our current SCADA software (Siemens WinCC) measures 16 points at our power plant, every 500 milliseconds.
I asked the SCADA "expert" why we cant speed-up the measuring intervals to 1 wave for example (20 milliseconds at Hz=50).
He said that impossible because:
"There is not any defined time duration. System reads the data sequentially. It reads the first point,
then reads the second point, etc. it returns to the start point after last point read.
It looks, this sequence takes approx. 500 milliseconds and you cannot change it."
Im not sure if this is software limitation (Siemens WinCC) or of our sensors?
But I believe we can't measure and track down transients accurately with a 500 milliseconds measuring interval.
Agreed?
And what can we do about?
Do we need to change the sensors and/or the software?
