Talk about the rotor of the diesel generating set

Author：gdlhwt Time：2014-08-25  

As the rotor excitation circuit over-current or overload protection over load protection in excitation circuit of diesel generating set, is connected into a three-phase, consists of two parts: the fixed time limit and inverse time. Time limit part of the action current on the normal operation of the maximum rated current can reliably return condition setting, the time limit of the T1 (5S) action in the signal and decrease the field excitation (decrease the field excitation function is not used); some of the motion characteristics of inverse time limit according to the generator excitation winding overload capacity determination, protection action in solution column demagnetization, inverse time limit of 10 seconds.

The diesel generator rotor one point grounding fault protection for generator rotor one point grounding reaction loop, protected by a ping-pong type switch principle, take turns back to the road, negative sampling rotor to ground voltage, by solving two different grounding loop equation, real-time calculation of rotor grounding resistance and grounding position. Protection after 2 second delay acting on signal.