Reduce corona losses and extend the service life of insulators
Tempered glass insulators have zero self-destruction characteristics. As long as it is observed on the ground or by helicopter, there is no need to climb the pole and detect it piece by piece, which reduces the labor intensity of workers.
The introduction of production line products, the annual self-destruction rate of 0.02-0.04 percent, can save line maintenance costs. Good arc resistance and vibration resistance.The new surface of the glass insulator, which has been subjected to lightning burns during operation, is still a smooth glass body and has a tempered inner stress protection layer, so it still maintains sufficient insulation energy and mechanical strength.
On the 500 kV line, the ice walking of the wire caused by the repeated dance accident was tested, the glass insulator was tested after the wire dance, and the electromechanical performance was not weakened.
Self-cleaning performance is good and not easy to age
According to the energy sector, the glass insulator does not accumulate dirt well and is easy to clean, and the glass insulator running along the southern line is washed cleaner after rain.The electromechanical properties of glass insulators on typical regional lines are regularly sampled to determine the electromechanical properties after service, and thousands of data are accumulated to show that the electromechanical properties of glass insulators after 35 years of service are basically consistent with those of the factory, and there is no aging phenomenon.
The main capacity is large, the voltage distribution on the string is uniform, the permittivity of glass is 7-8, so that the tempered glass insulator has a large main capacity, and the voltage distribution on the string is uniform, which is conducive to reducing the voltage carried by the insulator near the wire side and the ground side, so as to reduce radio interference, reduce corona loss and prolong the service life of the glass insulator, which has been proven by operating practice.
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