Protective Elements
Measuring Principle of Vector Surge Supervision
Equivalent circuit at synchronous generator in parallel with the mains.
Voltage vectors at mains parallel operation.
The rotor displacement angle between stator and rotor is dependent on the mechanical moving torque of the
generator. The mechanical shaft power is balanced with the electrical fed mains power and, therefore the
synchronous speed keeps constant.
412
MRU4
DOK-HB-MRU4-2E
Grid
V = I
1
* j Xd
V
P
V
1
I
1
I
2
Grid/Load
Generator
V
P
V
1
V = I
1
* j Xd
