发电机中性点接地电阻柜的工作原理‌是通过在发电机中性点处安装一个电阻箱，当发电机中性点出现故障或接地时，电阻箱将限制电流的流动，以维持中性点对地的电压在一个安全范围内，从而防止电压过高或过低引起的事故‌。
The working principle of the generator neutral point grounding resistor cabinet is to install a resistor box at the generator neutral point. When the generator neutral point fails or is grounded, the resistor box will limit the flow of current to maintain the neutral point to ground voltage within a safe range, thereby preventing accidents caused by high or low voltage.
工作流程
workflow
‌故障检测‌：当发电机中性点出现故障或接地时，发电机中性点接地电阻柜开始工作。
Fault detection: When the neutral point of the generator malfunctions or is grounded, the neutral point grounding resistor cabinet of the generator starts working.
‌电流限制‌：电阻箱中的电阻限制电流的流动，使故障电流限制到适当值，从而维持中性点对地的电压在一个安全范围内。
Current limitation: The resistors in the resistance box limit the flow of current, limiting the fault current to an appropriate value, thereby maintaining the neutral point to ground voltage within a safe range.
‌告警信号‌：一旦出现中性点接地的情况，发电机接地电阻柜会发出告警信号，提醒操作员检查发电机，及时排除故障。
Alarm signal: Once the neutral point is grounded, the generator grounding resistance cabinet will issue an alarm signal to remind the operator to check the generator and promptly troubleshoot the problem.
‌故障排除‌：一旦故障排除，电阻柜将自动恢复工作状态‌。
Troubleshooting: Once the fault is resolved, the resistor cabinet will automatically resume operation.
电阻的选择非常重要，应根据发电机的额定容量、运行工况和规范要求合理选取。同时，为了保证电阻的可靠性和耐久性，电阻箱中的电阻应该是高品质、长寿命的组件，并采取合理的防腐措施‌。
The selection of resistors is very important and should be reasonably chosen based on the rated capacity, operating conditions, and regulatory requirements of the generator. At the same time, in order to ensure the reliability and durability of the resistors, the resistors in the resistor box should be high-quality and long-lasting components, and reasonable anti-corrosion measures should be taken.
发电机中性点接地电阻柜广泛应用于小型发电机组中，特别是在电力系统的建设中，应充分考虑到电阻柜的应用。它对于提高电力系统的安全性、可靠性具有重要意义。
The neutral point grounding resistor cabinet of generators is widely used in small generator sets, especially in the construction of power systems, and the application of resistor cabinets should be fully considered. It is of great significance for improving the safety and reliability of the power system.