Analysis of grid dispatching on 10 kV busbar voltage transformer PT high voltage fuse melting processing method_English versionThe Analysis on the power grid dispatching on the handling of the high vo

high voltage fuse fusing of PT was the main cause accounted for 37.5% of the total malfunction times of transformators.

To ensure the safe and stable operation of the power grid, it is necessary to handle the high voltage fuse fusing of bus-bar PT in a timely and effective manner. Based on the analysis of the operation mode, load, protection and automatic devices, three methods are proposed for handling the high voltage fuse fusing of bus-bar PT:

1. Changeover bus-bars to stop PT: When the high voltage fuse fusing of bus-bar PT occurs, the load can be switched to another bus-bar to stop the PT. This method is easy to operate and can effectively reduce the impact on the power grid. However, it may cause overload on the other bus-bar and affect the reliability of the power supply.

2. Directly stop PT: When the high voltage fuse fusing of bus-bar PT occurs, the PT can be directly stopped to avoid the impact on the power grid. This method is simple and reliable, but it may cause a sudden power outage and affect the stability of the power grid.

3. Cut power to stop PT: When the high voltage fuse fusing of bus-bar PT occurs, the power supply to the PT can be cut off to stop the PT. This method can effectively avoid the impact on the power grid and ensure the safety of the operation. However, it may cause a longer power outage and affect the user's power consumption.

In summary, the handling method of the high voltage fuse fusing of bus-bar PT should be selected according to the specific conditions of the power grid operation. The power dispatching personnel should conduct a comprehensive analysis and judgment based on the actual situation, and take measures to minimize the impact on the power grid and ensure its safe and stable operation