Hi stevenal,
The 20 kV cables with the shield included are passing through the CT window, so that's the problem. I have seen that the IEEE suggest to route back the shield connection through the CT window. The only thing that just bothers me a little bit is the fact that the window is not very...
Hi everyone,
Recent and probably last update.
We were in the installation to do some tests in the 20 kV cable shields. It turned out that they were grounded at two positions:
1) In the Switchgear Centre, they were grounded.
2) In the HV side of the 20 kV/X transformers, they were also...
Hi everyone,
After being in the installation, I have seen several things I would like to share:
1) The +19 kVAr we were seeing in the 140 kW PCS inverter comes from a filter installed after the inverter, so we have solved that issue.
2) As for the circulating currents, we have seen the 20...
RRaghunath: I will go to the installation in the next weeks so I will be able to check it myself.
argotier: Hi argotier, there is one thing that I did not say about the 1250 kVA transformer. The no-load current is I0=0.175%, so I think those values of 20 kVAr may be too high.
Hi everyone,
I apologize for the delay but I have had a really busy week.
RRaghunath: As argotier is saying, the length of the cable needed so that they were responsible for the Q injected should be around 2.5 km, but there are no more than 10 meters so I am discarding that option...
Hi!
Thank you so much for you replies!
argotier: As far as the 20 kVAr is concerned, the problem is that it appears that the transformer is generating those 20 kVar, i.e., the measurement equipmente is displaying that the grid is absorbing 20 kVAr from the transformer. I have even thought...
Dear all,
I am new to the forum and I would like to say thanks in advance for wahtever insight you may give me about a recent issue I have found.
We have a 20 kV switchgear center and in one of the switchgears, which allow the injection of energy generated by an inverter, there are two 75/1...
