申論題

6.(20%) A single area consists of two generating units, rated at 500 and 800 MVA, with speed regulation of 6 percent and 5 percent on their respective ratings. The units are operating in parallel, sharing 900 MW. Unit 1 supplies 300 MW and unit 2 supplies 600 MW at 1.0 per unit (60 Hz) frequency. The load is increased by 100 MW.

(a) Assume there is no frequency-dependent load. Find the steady-state frequency deviation and the new generation on each unit. (10%)