Rolling Blackout Detector (Experiment)

[Mzezman]

last 6 hours - PTA

 

[Jet-Fighter7700]

so is it accurate or not?

 

[wingnut771]

so is it accurate or not?

We need more than one graph of the same time span to test with.

 

[Jet-Fighter7700]

We need more than one graph of the same time span to test with.

I thought there were quite a few Charts already posted

 

[Mzezman]

We need more than one graph of the same time span to test with.

which time frame do we need?

 

[wingnut771]

I thought there were quite a few Charts already posted

Lets have 3 graphs from 3 areas that cover the same time, then we can see if the frequency is the same.

 

[wingnut771]

which time frame do we need?

I'll take anything.

 

[PsyWulf]

3am - 3pm Joburg Fourways
If you pick a specific reference point like 49.6 - 12times it was reached or breached

 

[wingnut771]

View attachment 1399965
3am - 3pm Joburg Fourways

Awesome thanks, now if we can have another 2 graphs from 3am-3pm from other areas.

 

[wingnut771]

View attachment 1399965
3am - 3pm Joburg Fourways
If you pick a specific reference point like 49.6 - 12times it was reached or breached

Just looking at the general trend on this graph, the grid looks like it's under load, more under 50Hz than over.

UK for example:

 

[PsyWulf]

Just looking at the general trend on this graph, the grid looks like it's under load, more under 50Hz than over.

UK for example:
View attachment 1399973

I did a quick peek and last 3 days has been sub 50 the majority of the time here

 

[Mzezman]

Awesome thanks, now if we can have another 2 graphs from 3am-3pm from other areas.

PTA East 3am-3pm

 

[wingnut771]

 

[Lupus]

View attachment 1399985
View attachment 1399987

Don't quite correlate close those

 

[PsyWulf]

View attachment 1399985
View attachment 1399987

Very loosely similar,but the peaks and dips are noticeably different

 

[Lupus]

Very loosely similar,but the peaks and dips are noticeably different

Yup, I did say this with Paul Murkin back in the day, I'm sure it's grid specific, if your local grid is used more then others it'll show lower frequency.

 

[PsyWulf]

Synchroscope syncing of Generator

 

[PsyWulf]

There we go
I've rescaled the images and aligned time indexes,you can see the correlations far better now

 

[fragtion]

So did anyone see anything on their frequency graphs which might somehow give some clues about these 5 generating units tripping in short time succession last night , resulting in a stage 4 ?

 

[AchmatK]

Grid voltage and frequency