Question

^{The generators in power utility ABC can be grouped into three types based on their primary frequency duty. The first group has a droop setting of 4 % and the total rating is 2500 MW, the second group has a droop setting of 2% and the total rating is 500 MW, and the third group has their primary frequency disabled and the total rating is 1000 MW.}

^{use base MVA of 1000}

^{(a) Determine the equivalent R of the area.}

^{(b) If the load frequency sensitivity is 0.6 per unit determine the Area Frequency Response Characteristics parameter β.}

^{(c) What is the steady state frequency following a step load increase of 100 MW.}

Answer 1