Contribution Of Pressed Polymer Insulators For Low Voltage Overhead Insulated Conductors In Low Voltage Overhead Lines
Publish Time: 2025-05-27
With the continuous advancement of urban and rural power grid transformation in my country and the growing demand for electricity, the safety, stability and economy of low voltage distribution networks have received more and more attention. In low voltage overhead lines, insulators, as one of the key electrical equipment, bear the important functions of supporting conductors, isolating live bodies from the ground, and preventing leakage and short circuits. In recent years, pressed polymer insulators for low voltage overhead insulated conductors have gradually replaced traditional porcelain insulators and glass insulators due to their excellent performance, becoming the preferred material for the construction and transformation of low voltage overhead lines.1. Superior material properties bring higher reliabilitypressed polymer insulators for low voltage overhead insulated conductors are mainly made of high-performance engineering plastics (such as polypropylene, epoxy resin, etc.) through high temperature and high pressure molding. Compared with traditional ceramic or glass materials, polymer materials have good impact resistance, corrosion resistance and excellent hydrophobicity. Especially in harsh environments such as humidity, acid rain, and salt spray, polymer insulators are not easy to age or accumulate dirt, which effectively reduces flashover accidents caused by surface dirt. In addition, its light weight and high strength also make installation more convenient and reduce the labor intensity of construction workers.2. Structural optimization improves operation safetyModern pressed polymer insulators for low voltage overhead insulated conductors fully consider the actual operation needs of low-voltage overhead lines in structural design. Its umbrella skirt structure is designed based on the bionics principle, with a large creepage distance and good self-cleaning ability, which can effectively prevent rainwater bridging and dirt deposition, thereby improving the insulation level. At the same time, its internal inserts are made of hot-dip galvanized steel core or stainless steel to ensure that the mechanical connection is firm and reliable, and can still maintain stable mechanical properties under long-term wind and sun. This structural optimization greatly improves the operation safety factor of the line and reduces power outages caused by insulator damage.3. Adapt to complex environment and enhance system stabilityLow-voltage overhead lines are often laid in complex terrain areas such as urban edges, rural fields, mountainous forests, etc., facing multiple challenges such as large temperature differences, high humidity, and wind and sand erosion. Pressed polymer insulators for low voltage overhead insulated conductors have good weather resistance and UV resistance, can work stably in the temperature range of -40℃ to +80℃, and are not prone to brittle cracks, discoloration and other problems. This feature makes it particularly suitable for power grid construction in cold areas in northern my country and hot and humid areas in southern China, providing a solid guarantee for building a strong and intelligent distribution network.4. Environmental protection and energy saving, in line with sustainable development requirementsWith the advancement of the "dual carbon" goals, green and low-carbon has become the main theme of the development of the power industry. Pressed polymer insulators for low voltage overhead insulated conductors have low energy consumption and low pollution during the production process, and can be recycled and reused after being discarded, which is in line with the national energy conservation and emission reduction policy. In contrast, traditional porcelain insulators have high energy consumption and large carbon emissions during the firing process, and are difficult to recycle after being damaged. Therefore, promoting the use of pressed polymer insulators for low voltage overhead insulated conductors will not only help reduce the cost of power grid construction, but also help promote the green development of the power industry.5. Outstanding economic performance, helping rural power grid upgradeIn rural power grid transformation projects, capital investment is limited, but the cost-effectiveness of equipment is high. Pressed polymer insulators for low voltage overhead insulated conductors are moderately priced, have a long service life, low maintenance frequency, and the overall operating cost is significantly lower than that of traditional insulators. According to statistics, its average service life can reach more than 30 years, which is much higher than the 15-20 years of porcelain insulators. This not only reduces the replacement frequency and operation and maintenance costs, but also improves the continuity of power supply and service quality, making it an ideal choice for rural power grid upgrades.Pressed polymer insulators for low voltage overhead insulated conductors play an irreplaceable role in low-voltage overhead lines with their excellent electrical performance, reliable mechanical strength, excellent environmental adaptability and significant economic and environmental advantages. It not only improves the safety and stability of power grid operation, but also injects new vitality into the modernization of urban and rural power grids.
