The dangers of not maintaining power line equipment

Power equipment serves as the hub and channel in the power transmission and distribution network. During operation, equipment may experience aging, disrepair, and potential hazards. However, these issues cannot all be identified solely through visual inspection or the experience of personnel; specialized power equipment testing is necessary to detect these power safety hazards and organize personnel to address them promptly. In power operations, power safety is always a top priority for power professionals. Power equipment testing essentially plays a preventive and hazard-detection role. Therefore, power equipment testing (i.e., preventive testing of power equipment) is crucial.

Hazards of not maintaining power line equipment:

Failure to conduct regular inspections can lead to serious consequences such as protection refusal, malfunction, switch explosions, and equipment burnout!

Inspection items for routine power outage testing: Depending on the classification criteria, the scope of items varies. There are classifications based on the harm to the insulation of power equipment, classifications based on the measured information, etc. However, regardless of the classification method, the test items and main test methods and means are consistent. Based on the harm to the insulation of power equipment, it can be divided into two types: non-destructive testing and destructive testing. Non-destructive testing refers to tests conducted at a lower voltage (below or close to the rated voltage). This mainly includes measuring insulation resistance, measuring leakage current, measuring the dielectric loss factor, and measuring charge distribution, etc. Destructive testing refers to tests conducted at voltages higher than the operating voltage. During the test, a specified test voltage is applied to the insulation of the power equipment to test its withstand capability under this voltage, so it is also called a withstand voltage test. It mainly refers to AC withstand voltage tests and DC withstand voltage tests. Because the voltage applied in these tests is relatively high, the test on the sample is more direct and stringent, and it may also cause some damage to the insulation of the sample during the test, hence the name. These two types of tests have a certain order; non-destructive tests should be performed first, followed by destructive tests, to avoid unnecessary breakdown accidents.

Power workers deal with electricity daily, which inherently involves risks. However, by performing proper equipment maintenance, regular preventive testing, identifying problems, and promptly addressing faults, accidents can be avoided, ensuring maximum safety for power workers. Maintaining power equipment is equivalent to maintaining the entire power system, making a significant contribution to overall societal safety!