Performance improvement of pressed polymer insulators for low voltage overhead insulated conductors in low voltage overhead conductors
Publish Time: 2025-02-26
In modern power transmission, low voltage overhead conductors are a common transmission method and are widely used in urban and rural power grids, distribution systems and other scenarios. However, with the increase in power demand and the challenges brought by climate change, traditional insulated conductors are facing more and more safety and maintenance problems. In order to solve these problems, pressed polymer insulators for low voltage overhead insulated conductors, as a new type of material, have gradually become an important choice for improving the performance of low voltage overhead conductors.1. Basic characteristics of pressed polymer insulatorsPressed polymer insulators are made of high molecular polymer materials and are made through a special pressing process. Compared with traditional ceramic and glass insulators, polymer insulators have many advantages:Lightweight and high strength: polymer materials are lighter than traditional ceramic insulators, and have higher mechanical strength and tensile properties. They can withstand large external forces and ensure the stability of the power system.Strong weather resistance: polymer insulators can resist the erosion of harsh environmental factors such as ultraviolet rays, acid rain, and salt spray, have good durability, and are suitable for changing natural environments.Excellent electrical performance: polymer materials have excellent electrical insulation properties, which can effectively reduce current leakage and flashover phenomena, and ensure the safe operation of the power system.2. Improved performance of pressed polymer insulators in low-voltage overhead conductorsLow-voltage overhead conductors are often exposed to different environments and are affected by external factors such as wind, rain, lightning, and salt spray. Although traditional ceramic or glass insulators have good insulation properties, they are brittle and prone to breakage or damage in bad weather. In contrast, the application of pressed polymer insulators in low-voltage overhead conductors has significantly improved the reliability and performance of the power system.(1) Improve mechanical strength and enhance seismic resistanceThe installation environment of low-voltage overhead conductors often has external factors such as wind and vibration. Traditional insulators may crack or age in such an environment. Pressed polymer insulators, due to their good toughness and impact resistance, can effectively resist external impacts such as wind and vibration, and avoid conductor breakage or failure caused by insulator damage.(2) Enhance weather resistance and extend service lifeSince low-voltage overhead conductors are usually installed outdoors and exposed to environmental factors such as sunlight, rain, and pollutants for a long time, traditional insulators are easily corroded by ultraviolet rays, acid rain, salt spray, etc., resulting in performance degradation or even rupture. The polymer material used in pressed polymer insulators has strong resistance to ultraviolet rays, acids, alkalis, and salt spray, and can maintain stable insulation performance under extreme weather conditions, thus extending the service life of the power system.(3) Reduce power system failures and improve operational safetyThe safety of low-voltage overhead conductors is extremely important, especially during periods of high power load and peak power consumption. The stability of system operation is crucial to ensuring people's livelihood and economic activities. Pressed polymer insulators have excellent electrical insulation properties, which can effectively avoid current leakage and flashover caused by rain, moisture, pollutants, etc., reduce short-circuit failures in the power system, and improve operational safety.(4) Adapt to extreme climates and improve reliabilityUnder extreme weather conditions, such as typhoons and thunderstorms, traditional insulators are prone to failure or damage, resulting in shutdown of the power system. The pressed polymer insulator is designed to adapt to environments with large temperature changes and has strong adaptability to factors such as thermal expansion and cold contraction. Its superior weather resistance and high strength enable low-voltage overhead conductors to continue to work stably in bad weather, ensuring the long-term operation of the power system.3. Environmental friendliness of pressed polymer insulatorsIn addition to its performance advantages, pressed polymer insulators are also highly environmentally friendly. Because its materials can be recycled and environmentally friendly raw materials and technologies are used in the production process, polymer insulators are more in line with the requirements of modern sustainable development than traditional ceramic insulators.In summary, pressed polymer insulators for low voltage overhead insulated conductors have significantly improved the performance of low-voltage overhead conductors through their excellent mechanical strength, weather resistance, electrical properties and environmental adaptability. Whether in improving system safety, extending service life, or enhancing seismic resistance and adapting to extreme climates, polymer insulators have shown obvious advantages.
