申論題

2.A Y-connected load bank with a three-phase rating of 1000 kVA and 1150 V consists of three identical resistors of 1.3225 ohms. The load bank has the following applied voltages: =920∠2.8° , =1380∠-41.4° , and =11502180 V. Determine (15%)

(a) the zero-, positive- and negative-sequence line-to-neutral voltages ； (5%)