In a national power system otherwise called grid, there are a number of components/materials used to produce & interconnect electricity from one point to the other for everyone one to be served.
The whole system is connected for the main objective of using one to complement/compensate the order.
Unfortunately, if a couple of failures occur dramatically from some units, the whole grid will fail or collapse & so be unable to supply electricity. We then say we have Total system collapse.
We have had about 17 system failures this year.
For your information, total system collapses are usually caused from generation stations, transmission stations, control centers and the connection devices.
At a later date, we shall go into the details of the above gradually.
© Tunde Y. Salihu, 2016