Application of Anti-Wind-Deviation Insulator Technology in Transmission Lines
In the continuous development of China's power industry, the power system is constantly advancing into new fields. Although significant achievements have been made in power research, new challenges continue to emerge with industry growth, requiring new technologies for improvement. In the field of transmission lines, the application of anti-wind-deviation insulator technology is one such example. Therefore, this paper analyzes the application of anti-wind-deviation insulator technology from the perspective of transmission lines.
1. Anti-Wind-Deviation Measures
In the current era, wind deviation issues in transmission lines occur frequently, becoming a key concern in the power industry. Effective measures are urgently needed to address and prevent these problems. This paper discusses several feasible countermeasures.
Installing Counterweights: Adding counterweights is an effective method for addressing wind deviation in jumper strings. However, this method has limitations and limited effectiveness. To fundamentally solve jumper string issues, other methods are required.
Installing Wind-Resistant Guy Wires: This method effectively suppresses line wind deviation and ensures the safe and stable operation of transmission lines.
Optimizing Insulator Design: Reasonable optimization of insulators offers unique advantages in wind deviation prevention:
Significantly reduces wind deviation amplitude, increasing the electrical clearance between conductors and towers;
Simple installation and improved operational reliability;
Fully considers tower connection hardware design, facilitating future maintenance and upgrades.
Compared to other measures, anti-wind-deviation insulator technology demonstrates clear advantages. Additionally, relevant modules can be adaptively improved based on the specific grid structure.
2. Specific Application of Anti-Wind-Deviation Insulators in Power Grids
Overall, anti-wind-deviation insulator technology has distinct advantages over other methods and has become the most commonly used solution for wind deviation issues in power grids. This paper takes the Lanzhou region as an example to discuss its application in the local power grid.
Determining Insulator Length: The length of anti-wind-deviation insulators must be determined based on the terrain and grid conditions of Lanzhou. For example, in areas below 1000 meters in altitude, different voltage levels require corresponding numbers of insulators. For 110kV lines, the number of discs in suspension insulator strings for switching and lightning overvoltage should be no less than seven, with each disc's height meeting standards and the dry arcing distance not exceeding specified limits.
Determining Insulator Diameter: Anti-wind-deviation insulators must be securely mounted on transmission towers to enhance overall stability. This effectively controls insulator string swing in high winds, preventing wind deviation, and ensures adequate electrical clearance between live parts and the tower. The insulator diameter can be accurately calculated using specific formulas.
Optimizing Shed Structure: When applying anti-wind-deviation insulator technology, the shed structure must be reasonably designed. Alternating shed designs with good self-cleaning properties are recommended, offering the following advantages:
Increases creepage distance per unit length. The shed ratio must be carefully designed based on specific shed characteristics to avoid increased pollution due to improper design;
Reduces insulator diameter under specified shed spacing, thereby increasing pollution flashover voltage and helping mitigate environmental pollution in the Lanzhou region.
3. Conclusion
In summary, anti-wind-deviation insulators play an irreplaceable and crucial role in power grids. Their application not only ensures the safe and stable operation of power grids and reduces accidents but also significantly advances the practical significance of power technology research in China.
