openECA not aligning timetags

GPA Products openECA
1

Hello Sir,

I am using the openECA to perform the angular difference of phase A between two devices using the C#. (I know that such function it already implemented in the actions adapters of the manager, but I need to perform this in C# because other functions will be implemented).

At first, I use the TESTDEVICE from openECA manager as example computing the difference between TESTDEVICE-PA1 (PPA:6) and TESTDEVICE-PA1 (PPA:8). The function worked as a charm, and I observed the time-tags were aligned.

However, when I used the PMUs devices (PMU27 and PMU-M2) from Brazil. The operation used the PPA:98, PPA:152. I observed in this case that time-tags are different from PPA:98 (22:45:13.600), PPA:152 (22:45:13.866).

pmus
pmus2536×1289 573 KB

The project in C# was not able to compute the angular difference receiving the angles in a alternating form, ie, not receiving the two measurements at the same time, making the other measurement zero.

So my theory is that the input mapping is not aligning the time-tags to perform the operation.

How do you propose to solve the problem? The input mapping was supposed to handle alignment of the time-tags right?

Best regards, Orlem Santos

2

What is your frame rate setting for the calculator as compared to the incoming PMUs? Could be that it doesn’t match that of incoming PMU data and the data is being sorted into different sized buckets.

Ritchie

3

fig1
fig12410×1380 295 KB

As presented, the incoming frame rate (60frames/second) is equal to the frame rate settings (60).

But one thing that I find very strange was that the Estimated mean frame rate is 0.00 frame/sec in the concentrator. However, this also happened to my previously described example using TESTDEVICE and the c# project is receiving the data and computing the angular difference with no problem.

Thanks for the reply, Orlem