Background

A 500 kV ultra‑high‑voltage line in a northern high‑latitude cold region experienced frequent conductor galloping and ice‑load abrasion. Low temperatures, freeze–thaw cycles, and wind‑induced vibration caused inter‑strand wear, steel‑core fatigue, and micro‑crack corrosion initiation.

Solution

A low‑temperature‑resistant anti‑corrosion and anti‑abrasion grease was used. Key properties included wide temperature range (−40 °C to +180 °C), high adhesion, and lubricating function. The application covered:

• Internal strand lubrication to reduce fretting wear
• Protective barrier against moisture and ice‑melt water
• Enhanced fatigue resistance under dynamic loading

Outcomes

• Inter‑strand wear and broken‑strand risk reduced by 70%
• Conductor fatigue life extended by 15–20 years
• Galloping amplitude decreased by about 40%
• Stable performance under long‑term low‑temperature exposure
• Inspection and repair costs reduced by 60%

Conclusion

Specialized anti‑corrosion grease delivers combined anti‑corrosion, anti‑abrasion, and anti‑galloping benefits, greatly improving reliability and durability for overhead lines in cold regions.