In order to prevent the unbalanced voltage of the neutral point of the grid system from increasing due to the input and measurement of the arc suppression coil when the arc suppression coil of the pre-adjustment compensation mode is working under the normal state of the power grid, it is researched and designed. When the power grid is running normally, adjust the inductance of the arc suppression coil to an appropriate position in advance, but at this time the inductance and capacitive reactance are approximately equal, which will make the power grid in a state close to resonance, causing the neutral point voltage to rise. In order to prevent this If the phenomenon occurs, a damping resistor device is added to the arc suppression coil compensation device in the pre-adjustment mode, so as to suppress the displacement voltage of the neutral point to the required proper position and ensure the normal operation of the power supply network.
More
