Hello,
I am working on a wind farm project and I would like to hear your comments about system grounding in wind farms.
Different from the typical, generators are 600V Delta, with 0.6/34.5kV step up transformers with grounded wye at the 600V side (requirement of the generator).
The main...
I am looking for short circuit rating of steel wires (1 second), 5/16, 3/8, 7/16 and 1/2 Grade 220 steel wires. I would appreciate any input.
Thanks in advance,
Hi,
I am looking for a transformer remote monitoring system, which monitors H2 and CO gases, as well as humidity with communication via modem or GSM/GPRS.
I googled but not much success. Does anybody know a specific manufacturer who builds such products?
Regards
Saltan
Hello all,
If there is such a thing, can anybody give a manufacturer name for precast cable ductbanks (underground) for 15-kV cables?
Thanks in advance
I am trying to do a voltage dip study of a large synch. motor start using PSS/E. So far, all the documentation I have gone through is about induction motor starting. Any help will be highly appreciated.
Thanks in advance,
saltan
Hi,
Could a user of CYMGRD tell me what the "number of elements per conductor" is?
(I have modelled a ground grid of a substation using Autocad and imported into CYMGRD. All the conductors and rods are asymmetrical.)
Thanks in advance.
Hi all,
I need a 115/25kV trf, Dyn1. The loads on 25kV side are mixture of three phase and single phase. Is there a certain core type that I have to pick (shell, 5 limb core, etc)?
Thanks in advance,
saltan
Could anybody help me with the meaning and/or typical value of a "corona factor F" in the following equation for fair weather corona loss:
P=(0.000021xfxV^2xF) / ((log(2xs/d))^2
where;
P corona loss in kW/km
f frequency in Hz
V line to gnd voltage in kV
s spacing between conductors...
Could anybody help me with calculating the short circuit and lightning capacity of an overhead shield wire on a double circuit 230kV transmission line?
The OHSW material is 7 #8 alumoweld (7 strand).
I also need to learn the difference between thermal power rating and current carrying...
I need to define clearances and roadway/walkway dimensions in a few 230 kV (1050 BIL) and 115 kV (550 BIL) outdoor substations. Can anybody help me with basic dimensions or direct me to a source on the web (other than the RUS)?
Thanks in advance
Hi,
I have been trying to find a source of information for the use of surge arrestors at the line entries at substations, for 230kV lines and above.
All the information I have is regarding the use of SA for transformer protection. Could anybody suggest a source of information for this...
I would really appreciate any help regarding the limited time rating of a 250MVA, 230/115kV for overload periods of 15 minutes, 10 days and continuous. Any reference, link, suggestion would be extremely helpful.
I am also looking for info regarding the LTR of ACSR conductor. It seems like...
