Resistance of Diesel Generator Set Magnetic Field Rheostat

Reduce the opening of the guide wing of the diesel generator set and the speed of the water turbine, parallel the reactor core air gap of the diesel generator set, change the thickness of the core gasket of the diesel generator set, and adjust the air gap of the diesel generator set. The magnetic rheostat of Shangchai diesel generator set is short circuited, and the voltage regulation of Shangchai diesel generator set fails. Find out the short circuit point of Shangchai diesel generating set and eliminate it. The diesel generator set of Shanghai Diesel Engine Co., Ltd. flew in an accident, and the emergency shutdown was conducted for accident treatment. The prime mover speed of the diesel generator set of Shanghai Diesel Engine Co., Ltd. was low, so the prime mover speed of the diesel generator set of Shanghai Diesel Engine Co., Ltd. was adjusted to the rated value.

If the resistance of excitation circuit is too large, reduce the resistance of the magnetic field rheostat of Shangchai diesel genset and increase the excitation current of Shangchai diesel generator set. For semiconductor excitation diesel generator set, check whether the additional winding connector of diesel generator set is disconnected or connected incorrectly. The exciter brush of Shangchai diesel generator set is not on the neutral line, or the spring pressure is too low. Adjust the brush of Shangchai diesel generator set to the correct position, replace the brush of Shangchai diesel generator set, and adjust the spring pressure of Shangchai diesel generator set.

Check and replace the damaged diode of Shangchai diesel generator set. There is short circuit or grounding fault in the stator winding or excitation winding of Shangchai diesel generator set. Check and remove the fault of Shangchai diesel generator set. The brush contact surface is too small, the pressure is insufficient, and the Shangchai diesel generator set has poor contact. If there is a reason for the commutator surface of the Shangchai diesel generator set, it can be polished with abrasive cloth at low speed, or the spring pressure of the Shangchai diesel generator set can be adjusted. The instability of voltage may lead to the failure of Shangchai diesel generator set. It is necessary to conduct in-depth research on this common failure, accumulate experience, and provide more support for the normal operation of Shangchai diesel generator set.

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