What are the daily maintenance of cable lines

The basic task of daily maintenance of cable lines is to meet the needs of power grid and users for uninterrupted power supply, prevent various cable accidents, and ensure safe power supply of cable lines. The focus of daily maintenance work is to improve the reliability of line power supply, reduce the cable accident rate, shorten the outage maintenance time and reduce maintenance costs.

1. Patrol work of power cables. Patrol work can be divided into periodic patrol and state patrol. The daily inspection cycle is divided into different cycles based on the rating results of power cable equipment. (The rating of power cable equipment refers to the rating of cable lines and their auxiliary equipment. It is an important part of the safety inspection of power supply equipment and a basic work of power supply equipment management.) Normal daily periodic inspection is the basic guarantee for safe and reliable operation of power cables. The patrol period of power cable status is determined by the construction sections around the power cable route, and the patrol period varies from one day to one month. The state inspection cycle is a necessary guarantee to ensure the safe and reliable operation of power cables.

2. Insulation supervision of power cables. At present, the power cable insulation supervision is mainly based on the handover test, preventive test and comprehensive analysis of the operation of high-voltage electrical equipment. If insulation defects are found, first find out the insulation aging law and development trend to eliminate the existing defects in time and maintain a good insulation level of the equipment.

3. Load monitoring of power cables. The daily load monitoring of power cables is an effective monitoring means. For some cables with heavy current, it is necessary to carry out necessary auxiliary temperature measurement work to ensure that the operating indicators of operating cables are within the controllable range.