Question

The grid is operating under balanced conditions at its nominal value of 60 HZ. Describe qualitatively what will happen to the frequency under the following scenarios: (a) A large coal-fired steam power plant experiences a fault and suddenly trips off-line, i.e., disconnects from the grid. (b) A large industrial load experiences a fault and trips off-line. (c) A large sports stadium turns on all of its lights.

Answer 1

Please leave a like,Thanks!

a) The frequency change when the fault occurs and suddenly trips off (disconnect from the grid) is a The frequency of the system decreases as the power from the Grid stops and which will result in several synchronous machine to run in their Maximum level and entire System will slow down, b) Due to large Industrial load, The frequency of the entire System will increase since the Kinetic energy of the system will derease (synchronous machine will move faster). c) As The Sports Stadium turns on all of its lights, sports stadium has so many lights of ligh voltage, so this Change in (turn on) will lead to Increased loading which in turn will result in decrease of frequency.