The power-distribution tag has no wiki summary.
3
votes
2answers
107 views
Why are the power transmission/distribution systems AC and not DC?
Is there a good reason why we are not in the process of completely converting our electrical transmission system to DC? The main reason for using AC on the grid (no offense Tesla, I love you man) was ...
3
votes
4answers
240 views
Is it practically possible to transfer electrical power around the World by wires?
Assume that we installed plenty of solar cells in all continents; mainly in Asia, Africa and America. Can we transfer the electrical power harvested from them around the World through wires? So that ...
2
votes
1answer
187 views
Why the delay between transformer failure and power outage?
A friend witnessed the explosion of the 14th street substation. I believe these transformers, about 1 city block in extent, delivered power to most of lower Manhattan. I am guessing the flood water ...
-1
votes
1answer
125 views
Power Grid in depth explanation [closed]
I am looking for links, books, papers, documents or any other reference type that allows me to get a very in depth overview of the power transmission and distribution network (preferably of the UK). ...
27
votes
8answers
2k views
Why do utility companies supply at a frequency of either 50/60 Hz?
It just struck me that Utility Companies world-wide supply domestic users at either 50/60Hz. It could have been selected to be 10 Hz, or 100 Hz ... whatever
Was 50/60 chosen at random? Is there some ...
1
vote
1answer
258 views
IEC 60320 power cord rating
I am trying to determine what power cords I need to get to connect computer servers to 208v PDUs.
I know the PDU has C13 receptacles I need a C14 to C13 power cord. However, I noticed there are ...
2
votes
3answers
333 views
How do utility companies treat voltage deviations in distribution networks?
I live in a region where nominal mains voltage is 220 volts and state standards permit deviations within 5 percent continuously and within 10 percent for short periods. So if I measure the voltage in ...
0
votes
1answer
161 views
Localized Star Network From Bulk Cap?
I was reading the Power Integrity article on Altera's website and came across the recommendation for the Bulk Capacitor (47uF to 100uF). I'm supposed to have one 47uF-100uF capacitor for every two ...
4
votes
5answers
268 views
Is direct current really better for pumped-storage hydroelectricity facilities?
Currently the article equivalent to War of the Currents in Russian Wikipedia section says that direct current is beneficial to pumped-storage hydroelectricity plants and provides no reference to that ...
1
vote
1answer
151 views
What could be this “transient electric deviation”?
On August 7th, 2011 a lightning hit a transformer powering one of Amazon EC2 facilities in Dublin. The status report said
Normally, upon dropping the utility power provided by the transformer, ...
4
votes
4answers
201 views
Why are power distribution systems so prone to massive faults?
Many region-wide blackouts (like this one or this one) are described as follows: some high-voltage equipment (like a generator or a transformer) fails and the grid gets overloaded and then protective ...
8
votes
4answers
1k views
How does earthing work when earth is dry?
Earthing is meant to provide reliable contact of an electric appliance to earth so that if there's an insulation fault current goes into earth instead of through a person's body. This requires ...
2
votes
2answers
438 views
max amperage of WAGO 222-415 connector?
Here's a really nice multi-wire splicing connector:
http://www.wago.us/news/5019.htm
I'm using it for power distribution for a quadcopter:
...
