reactive power relay

例句：

1. 1.The reactive power relay is used to protect the electrical system from overloads.
   反应功率继电器用于保护电力系统免受过载。
2. 2.In this system, the reactive power relay is responsible for monitoring and controlling the power flow.
   在这个系统中，反应功率继电器负责监控和控制电能流动。
3. 3. The reactive power relay is crucial in maintaining the stability of the power grid.
   反应功率继电器在维护电网稳定性方面至关重要。