Introduction of Composite Insulator and Its Model Advantages
2024-01-30
Composite insulator is a kind of special insulator, which is mainly used in the mortgage overhead distribution line, made of special raw materials, and plays an important role in the use. In the use of plastic composite insulators should pay attention to some of the use of methods and matters, to prevent the aging of the insulator, have a certain impact on the equipment, damage the effectiveness of the equipment, not the effect of insulation. Low-voltage overhead distribution lines with plastic composite insulators, the general use of high-density polyethylene as the main material, plus anti-aging agent once extrusion molding, according to the different uses of insulators made of various types of low-voltage insulators.
Compared with the traditional porcelain insulator, this kind of insulator can reduce the cost, facilitate the construction, improve the work efficiency, and its damage rate is almost zero, good performance, strong applicability, safe and reliable, is also a kind of ideal low voltage overhead distribution line with insulator.
Plastic composite insulators have relatively good advantages, can show good use value in use, improve the efficiency of the project, ensure the normal construction and implementation, reduce the cost and cost of the project.
Composite insulators installed on transmission lines may suffer from reduced insulation resistance and cracking due to long-term exposure to electromechanical loads, sun and rain, and changes in heat and cold during operation.
breakdown and other faults, bring potential threat to the reliability of power supply, therefore, the composite insulator on-line detection is of great significance.
In high-voltage transmission lines, the aging of composite insulators directly threatens the safe operation of the power system and directly affects the safety of the power system. Aging insulators, especially absolute zero-value insulators, are not only prone to overheating and expansion, resulting in dry cracking of the insulator head, resulting in disconnection accidents, but also have low flashover voltage, reducing the insulation level of high-voltage lines.
Composite insulator zero value insulator refers to the insulator in the operation of the potential distribution at both ends of the insulator is close to zero or equal to zero. The influence of zero-value or low-value insulators (the insulation resistance of low-value and insulator zero-value insulators is generally 0 MΩ ~ 300MΩ): the insulation of line conductors depends on insulator strings. due to manufacturing defects or external effects, the insulation performance of insulators will continue to deteriorate. when the insulation resistance decreases or is zero, it is called low-value or insulator'> zero-value insulator. They have a great influence on the operation of the line. According to incomplete statistics, the proportion of zero-value or low-value insulators in the suspension porcelain insulators of the line operation is about 0.3%.
Key words:
Power fittings
Power equipment
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