合金尾氣發(fā)電機保護包括縱差動保護、橫差動保護、零序保護、過流保護、過負荷保護、過電壓保護、失磁保護、失步保護、低頻保護、逆功率保護、接地保護等。

　　Generator protection includes longitudinal differential protection, transverse differential protection, zero sequence protection, overcurrent protection, overload protection, overvoltage protection, demagnetization protection, step loss protection, low-frequency protection, reverse power protection, grounding protection, etc.

　　1. 縱差動保護：縱差動保護是發(fā)電機內部故障的主保護，用于快速切除發(fā)電機定子線卷兩側的故障。

　　1. Longitudinal differential protection: Longitudinal differential protection is the main protection for internal faults in the generator, used to quickly cut off faults on both sides of the generator stator winding.

　　2. 橫差動保護：橫差動保護用于定子單相接地保護，可以在定子線卷發(fā)生單相接地故障時及時動作。

　　2. Horizontal differential protection: Horizontal differential protection is used for stator single-phase grounding protection, which can act in a timely manner when a single-phase grounding fault occurs in the stator winding.

　　3. 零序保護：零序保護是基于發(fā)電機定子繞組單相接地時產(chǎn)生零序電流原理構成的，當定子繞組發(fā)生單相接地故障時，零序保護裝置可以快速切除故障。

　　3. Zero sequence protection: Zero sequence protection is based on the principle of generating zero sequence current when the stator winding of the generator is single-phase grounded. When a single-phase grounding fault occurs in the stator winding, the zero sequence protection device can quickly cut off the fault.

　　4. 過流保護：過流保護是當定子線卷的電流超過額定電流時，保護裝置可以及時動作，防止發(fā)電機因過電流而受到損壞。

　　4. Overcurrent protection: Overcurrent protection is when the current of the stator winding exceeds the rated current, the protection device can act in a timely manner to prevent the generator from being damaged due to overcurrent.

　　5. 過負荷保護：過負荷保護是當發(fā)電機承受超過額定負荷時，保護裝置可以及時動作，防止發(fā)電機因過負荷而受到損壞。

　　5. Overload protection: Overload protection is a protective device that can act in a timely manner when the generator is subjected to a load exceeding its rated capacity, preventing damage to the generator due to overload.

　　6. 過電壓保護：過電壓保護是當發(fā)電機的電壓超過額定電壓時，保護裝置可以及時動作，防止發(fā)電機因過電壓而受到損壞。

　　6. Overvoltage protection: Overvoltage protection is when the voltage of the generator exceeds the rated voltage, the protective device can act in a timely manner to prevent the generator from being damaged due to overvoltage.

　　7. 失磁保護：失磁保護是當發(fā)電機的磁場失去時，保護裝置可以及時動作，防止發(fā)電機因失磁而受到損壞。

　　7. demagnetization protection: demagnetization protection is a protective device that can act in a timely manner when the magnetic field of the generator is lost, preventing the generator from being damaged due to demagnetization.

　　8. 失步保護：失步保護是當發(fā)電機與系統(tǒng)失去同步時，保護裝置可以及時動作，防止發(fā)電機因失步而受到損壞。

　　8. Out of step protection: Out of step protection is a protective device that can act in a timely manner when the generator loses synchronization with the system, preventing damage to the generator due to out of step.

　　9. 低頻保護：低頻保護是當系統(tǒng)頻率低于額定頻率時，保護裝置可以及時動作，防止發(fā)電機因低頻而受到損壞。

　　9. Low frequency protection: Low frequency protection is a protective device that can act in a timely manner when the system frequency is lower than the rated frequency, preventing the generator from being damaged due to low frequency.

　　10. 逆功率保護：逆功率保護是當發(fā)電機進入逆功率狀態(tài)時，保護裝置可以及時動作，防止發(fā)電機因逆功率而受到損壞。

　　10. Reverse power protection: Reverse power protection is a protective device that can act in a timely manner when the generator enters a reverse power state to prevent damage to the generator due to reverse power.

　　11. 接地保護：接地保護是當發(fā)電機定子接地時候，保護裝置發(fā)出跳閘或者告警信號（V:weijicekong）。

　　11. Grounding protection: Grounding protection is when the generator stator is grounded, the protection device sends a trip or alarm signal (V: weijicekong).