REG670 ABB 发电机保护

REG670是一款发电机保护，主要包括以下方面：

纵差动保护：用于保护发电机定子线卷两侧的故障。

横差动保护：用于定子单相接地保护，可以在定子线卷发生单相接地故障时及时动作。

零序保护：基于发电机定子绕组单相接地时产生零序电流原理构成，当定子绕组发生单相接地故障时，零序保护装置可以快速切除故障。

过流保护：当发电机定子线卷的电流超过额定电流时，保护装置可以及时动作，防止发电机因过电流而受到损坏。

过负荷保护：当发电机承受超过额定负荷时，保护装置可以及时动作，防止发电机因过负荷而受到损坏。

过电压保护：当发电机的电压超过额定电压时，保护装置可以及时动作，防止发电机因过电压而受到损坏。

失磁保护：当发电机的磁场失去时，保护装置可以及时动作，防止发电机因失磁而受到损坏。

此外，发电机保护还包括过载保护、缺相保护、欠压保护、温度保护、超速控制、接地检测、频率失步及堵转保护、逆功率保护等。这些保护措施可以确保发电机的正常运行，防止因各种故障而导致的损坏。

请注意，具体的保护措施应根据发电机的类型、容量和运行环境等因素进行选择和设计。同时，定期的检查和维护也是确保发电机正常运行的重要措施。

REG670 is a generator protection, mainly includes the following aspects:

Longitudinal differential protection: used to protect the fault on both sides of the generator stator coil.

Transverse differential protection: Used for stator single-phase grounding protection, can be timely action when the stator coil single-phase grounding fault occurs.

Zero sequence protection: Based on the principle of zero sequence current generated when the generator stator winding is grounded, when the stator winding is grounded, zero sequence protection device can quickly remove the fault.

Overcurrent protection: When the current of the generator stator coil exceeds the rated current, the protection device can act in time to prevent the generator from being damaged due to overcurrent.

Overload protection: When the generator bears more than the rated load, the protection device can act in time to prevent the generator from being damaged due to overload.

Overvoltage protection: When the voltage of the generator exceeds the rated voltage, the protection device can act in time to prevent the generator from being damaged due to overvoltage.

Loss of magnetism protection: When the generator's magnetic field is lost, the protection device can act in time to prevent the generator from being damaged due to loss of magnetism.

In addition, generator protection also includes overload protection, phase loss protection, undervoltage protection, temperature protection, overspeed control, ground detection, frequency out-of-step and lock-rotor protection, reverse power protection, etc. These protective measures can ensure the normal operation of the generator and prevent damage caused by various failures.

Please note that specific protection measures should be selected and designed according to factors such as the type of generator, capacity and operating environment. At the same time, regular inspection and maintenance is also an important measure to ensure the normal operation of the generator.