定子繞組短路,在短路電壓的作用下產生回路電流,使匝間短路發展為單相接地短路和中間短路。當定子繞組多相短路對機組有害時,短路電流會導致機組燒毀。
Short circuit of stator winding generates circuit current under the action of short circuit voltage, causing inter turn short circuit to develop into single-phase ground short circuit and intermediate short circuit. When the multiphase short circuit of the stator winding is harmful to the unit, the short-circuit current can cause the unit to burn out.
勵磁電流會急劇下降或消失,機組從系統中吸收大量功率,柴油發電機組由同步運行變為異步運行,導致系統電壓下降,嚴重時系統崩潰。
The excitation current will drop or disappear sharply, the unit will absorb a large amount of power from the system, and the diesel generator set will change from synchronous operation to asynchronous operation, which will cause the system voltage to drop, and in serious cases, the system will collapse.
勵磁電路將接地。發電機勵磁回路有兩種接地情況:一點接地和兩點接地。一般來說,當勵磁回路發生少量接地時,發電機不會受到嚴重危害。但如果發電機維護不及時,可能導致兩點接地,破壞轉子磁通平衡,引起發電機強烈振動,燒毀轉子繞組。
The excitation circuit will be grounded. There are two grounding conditions for the generator excitation circuit: one point grounding and two point grounding. Generally speaking, when a small amount of grounding occurs in the excitation circuit, the generator will not be seriously endangered. But if the generator is not maintained in a timely manner, it may lead to two point grounding, damage the rotor magnetic flux balance, cause strong vibration of the generator, and burn out the rotor winding.

該裝置將產生過電壓。當發電機在運行中突然空載時,如果柴油發電機組不及時修復,可能會因調速系統慣性大而產生過電壓,導致發電機組絕緣層損壞。
This device will generate overvoltage. When the generator is suddenly unloaded during operation, if the diesel generator set is not repaired in time, it may generate overvoltage due to the large inertia of the speed governing system, resulting in damage to the insulation layer of the generator set.
該單元將過載。柴油發電機組過載是指發電機運行超過額定容量。如果發電機維護不及時,短時超負荷運行會造成發電機定子繞組溫度升高,加速絕緣部分老化,縮短發電機使用壽命。如果運行時間過長,可能會導致發電機定子繞組燒毀,從而導致發電機無法發電。
The unit will be overloaded. Overload of diesel generator set means that the generator operates beyond the rated capacity. If the generator is not maintained in a timely manner, short-term overload operation will cause the temperature of the generator stator winding to rise, accelerate the aging of the insulation part, and shorten the service life of the generator. If the operating time is too long, it may cause the generator stator winding to burn out, resulting in the generator being unable to generate electricity.
如果柴油發電機組維護不及時,定子會過流。定子過電流通常由外部短路或系統振蕩引起。如果發電機沒有及時維護,當發電機定子溫度升高時,會加速繞組絕緣部分的老化;嚴重的話會導致其他故障。
If the diesel generator set is not maintained in time, the stator will overflow. Stator overcurrent is usually caused by external short circuits or system oscillations. If the generator is not maintained in a timely manner, when the temperature of the generator stator increases, it will accelerate the aging of the insulation part of the winding; In severe cases, it can lead to other malfunctions.
本文由生物質氣發電機組整理發布,您是不是對這些內容有所了解了呢?更多的內容請點擊:
http://www.50gaoxiao.com我們會有更多精彩內容等你查看。
This article is organized and published by biomass gas power generation units. Do you have any understanding of these contents? For more information, please click on:
http://www.50gaoxiao.com We will have more exciting content waiting for you to check out.