The Mudcat Café TM
Thread #160532 Message #3810163
Posted By: GUEST
16-Sep-16 - 11:11 AM
Thread Name: Tech: Power breakers/voltage-affecting instruments
Subject: RE: Tech: Power breakers/voltage-affecting instruments
(http://www2.nationalgrid.com/uk/services/balancing-services/frequency-response/)
"System frequency is a continuously changing variable that is determined and controlled by the second-by-second (real time) balance between system demand and total generation. If demand is greater than generation, the frequency falls while if generation is greater than demand, the frequency rises."
However, it has to be within "±1% of nominal system frequency (50.00Hz) save in abnormal or exceptional circumstances."