IEEE 519 PME Reports shows Aggregates0% values Very Short Time Voltage Distortion Compliance - 99th Percentile

[Jagadish]

I have been looking for IEEE519 reports from PME for PM8000 device,report generated for Last 7 days.but not getting 0% aggregate value on Individual & THD. and V1,V2,V3 values are blank for Very Short Time Voltage Distortion Compliance - 99th Percentile for Non compliance days.

Similar results for veryshort time current harmonics 99th percentile too.

Isc/IL = 10 Individual Harmonic Order (Odd) TDD (%)
Ratio Window Limit (0 - 20) <11 11≤h<17 17≤h<23 23≤h<35 35≤h
IEEE 519 Limit (%) 8 4 3 1.2 0.6 10
Non-compliant 3-second Days 2 2
Total Days 7
Compliance FAIL FAIL
Very Short Time Current Distortion Compliance - Non Compliant Days
Individual Harmonics TDD Limit - 10
Date Aggregate I1 I2 I3 Aggregate I1 I2 I3
6/30/2024 0.00% 0.00%
7/1/2024 0.00% 0.00%

[Charles_Murison]

Hello @Jagadish ,

I am sorry I am having a little trouble understanding your post. Would be good to determine what is available where in your system. For the IEEE519 reports in PME. There are different reports for different versions of the IEEE519 standard. Different templates on the meter were designed for different versions of the standard. The meter has a number of onboard logs that are then feed into PME database for the report. The report is looking for very specific measurement names. Different versions of the report use different measurement names. 

I am going to assume you are using a meter with V2.1.0 or later version of firmware with the default template.
A) Is the IEEE519 enabled? and the correct settings applied to the meter?

B) Is the meter logging values for the desired measurements?

C) Does the logged values get into PME database?

D) Are you using the correct report?

First step for me would be to confirm that you are logging the desired values. Note that PM8000 Standard does not have enough data recorders to log all possible individual harmonic information (I1 H2, I1 H3 etc.) the report can use.

Regards,

Charles

[Jagadish]

Hello @Charles_Murison 

Thanks for the information shared. Now I am getting values for IEEE519 Compliance by simulating Harmonic injection using secondary injection kit.

But how do PME Calculates the aggregate % Non compliance to 99th percentile daily 3sec from Individual voltage /current components % Non compliance to 99th percentile.

Hi attaching both from device webpage & PME ResultsDevice webpage1

Device webpage2

PME Compliance

 Whats that "Invalid Interval". I have observed "Valid Intervals" are incrementing in each 3sec.

Thanks

Jagadish

[Charles_Murison · Accepted solution]

Hello @Jagadish ,

PME does not calculates the aggregate % Non compliance to 99th percentile daily 3sec from Individual voltage /current components % Non compliance to 99th percentile. 
In the meter there are many counts getting incremented and counted.
A) Valid intervals
B) Intervals on V1/V2/V3, I1/I2,I3 as well as a count if any V1/V2/V3 or I1,I2,I3 where individual Harmonics exceed limits (8 different counters).
C) Intervals on V1/V2/V3, I1/I2,I3 as well as a count if any V1/V2/V3 or I1,I2,I3 where THD exceed limits (8 different counters).

D) Invalid intervals

The only calculation that PME does is 1-(X/Y) where X and Y are different counts from Meter
ex 1-(5505/28224) = 0.80495 = 80.50%
You cannot calculate aggregate from individual phases. What you can get is the possible range.
100 - (100-V1) - (100-V2) - (100-V3) <= Aggregate <= min(V1,V2,V3)

An invalid interval is where where there is a PQ event, sag/swell or interruption.