( ) adjusts the exciting current only according to load current; ( ) adjusts the exciting current only according to the load current pahse.
A. compound compensation/ phase compensation
B. compound compensation/phase compound compensation
C. phase compensation/compound compensation
D. phase compound compensation/phase compensation
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In general, for the automatic frequency adjustment and load control device, cannot realize ( ).
A. let active power sharing even for two generators with different speed characteristic
B. keep network frequency fixed
C. receive disconnecting order,shifting load automatically
D. adjust the number of parallel running generators according to load
The active power distribution between two generator sets running in parallel is ( ) the speed droop coefficient.
A. proportional to
B. reciprocal to
C. irrelevant with
D. times square to
For two generators running in paralel, the 1# generator shares much less active power than 2# generaor. We should ( ) to make the active power is distributed evenly.
A. decrease the prime mover oil throttle of # 1 generator and increase the prime mover oil throttle of # 2 generator
B. increase the prime mover oil throttle of # 1 generator and decrease the prime mover oil throttle of # 2 generator
C. decrease the excitation current of # 1 generator and increase the excitation current of # 2 generator
D. Increasing the excitation current of # 1 generator and decreasing the excitation current of # 2 generator.
To keep network frequency and voltage fixed basically, the correct disconnecting operation is ( ) for two generators with same capacity .
A. first increase oil throttle of remaining generator, then decrease oil throttle of disconnecting generator
B. first decrease oil throttle of disconnecting generator, then increase oil throttle of remaining generator
C. decrease oil throttle of two generators at the same time
D. decrease oil throttle of disconnecting generator, increase oil throttle of remaining generator, at the same time
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