Generating set is the product of industrial progress. It saves a lot of time cost for people to a certain extent, and also brings considerable benefits. It is in the continuous upgrading, the performance is constantly improved, but it is inevitable that there will be failures, today rikoda generator manufacturer on the generator remind abnormal operation of this fault to share with you.
1. One-point grounding and two-point grounding of generator rotor windings: although one-point grounding of rotor windings has no influence on the operation of generator, if another point grounding occurs, part of rotor windings will be short-connected to cause magnetic potential imbalance and cause severe vibration of the unit, resulting in serious consequences. Therefore, one point grounding protection and two points grounding protection of rotor winding should be installed at the same time.
2.Generator loss of magnetic field is divided into complete loss of magnetic field and partial loss of magnetic field, which is one of the common faults of the generator. Loss of magnetic field fault not only causes harm to the generator, but also has a serious impact on system safety, so it is necessary to install loss of magnetic field protection.
3.The abnormal running state of the generator is not as serious as the fault of the generator, but it endangers the normal operation of the generator, especially with the increase of time, it may develop into a fault. Therefore, it is necessary to install corresponding protection for prevention.
4. When the load of stator winding runs asymmetrical, negative sequence current may cause overheating of motor rotor surface layer. XU is equipped with asymmetric load protection of stator winding (overheating protection of rotor surface layer). Symmetrical overload of stator winding is installed with symmetrical overload protection (usually with inverse time limit characteristic). Rotor winding overload, installed rotor winding overload protection.