Problems and Solutions Caused by Low voltage distribution system Replacement

2025-10-22 17:25:17

Low voltage distribution system use steel plates to make enclosed shells, and the electrical components of the incoming and outgoing circuits are installed in withdrawable drawers. In order to achieve centralized monitoring and control of the entire Drawer type distribution cabinet, various intelligent devices such as motor protection controllers and multifunctional digital meters need to be installed. The data is transmitted to the computer monitoring system through communication for centralized monitoring, and various operation reports are generated. During operation, replacing drawers may cause abnormal power consumption.

1. When replacing smart devices, maintenance personnel record the bottom value of the electricity meter of the smart device to be replaced and write it into the newly replaced smart device. After restoring communication, it does not affect the calculation of electricity measurement. But this method relies on smart devices supporting the function of changing the bottom value of the electricity meter, and requires maintenance personnel to master relevant skills, with cumbersome operation steps.

2. When replacing drawers, maintenance personnel should record the electrical circuit number of the drawer being replaced, record the bottom value of the electricity meter of the replaced smart device, and record the bottom value of the electricity meter of the newly replaced smart device, and provide it to the monitoring system duty personnel. Manually adjust the electricity measurement report of the power circuit where the replaced drawer is located by the on duty personnel of the monitoring system. But this method relies on the sense of responsibility and accuracy of data recording of maintenance personnel and monitoring system duty personnel.

3. Manually enter information such as the power circuit number, outage time, power transmission time, the bottom value of the replaced smart device's electricity meter, and the bottom value of the newly replaced smart device's electricity meter in the monitoring system software. The monitoring system software automatically corrects the electricity measurement report of the power circuit where the replaced power distribution system is located based on this information. But this method relies on the monitoring system software having relevant functions.