Lightweight suspension string for extra-high voltage ac transmission line

By improving the structural design of the suspension string, including the connection method of the suspension clamp and the counterweight, the problem of insufficient connection stability of the suspension string in UHV AC transmission lines was solved, achieving both lightweighting and improved stability.

CN224480843UActive Publication Date: 2026-07-10JIANGSU SHUANGHUI POWER DEV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU SHUANGHUI POWER DEV
Filing Date
2025-07-30
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The structural components of the suspension strings in existing ultra-high voltage AC transmission lines have deficiencies in terms of connection stability and reliability, which affects the stability of power transmission.

Method used

The suspension string structure, which adopts a lightweight design, consists of suspension clamps, trunnion plates, right-angle plates, connecting plates, parallel plates, composite insulators, and equalizing rings. By improving the connection structure of the suspension connecting plates and counterweight plates, the connection stability and the spatial distribution stability of the conductors are enhanced.

Benefits of technology

The design achieves a lightweight suspension string while ensuring the stability of the UHV transmission line and the stable spatial distribution of the conductors, thus improving the stability and reliability of the connectors.

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Abstract

The application discloses a lightweight suspension string for extra-high voltage AC transmission lines, belongs to the field of electric power fittings, and is used for electric power transmission. The suspension string comprises a suspension clamp, a conductor cover is located at the connection position of a conductor and the suspension clamp and extends along the conductor for a certain distance, the suspension clamp is arranged on a suspension link plate, the suspension link plate is arranged at the two ends of a link plate C, the link plate C is connected with a voltage grading ring through a bowl head hanging plate, the voltage grading ring is connected with a ball head hanging plate through a composite insulator, the ball head hanging plate is connected with a right-angle hanging plate B through a link plate B, the link plate B is connected with the bottom two ends of a link plate A through a parallel hanging plate, the top two ends of the link plate A are respectively connected with right-angle hanging plates A, and the right-angle hanging plates A are connected with trunnion hanging plates. The suspension link plate is further provided with a weight piece at the position close to the bottom. The application realizes lightweight design of the suspension string, so that the stability and reliability of the connecting piece are improved while the stability of the extra-high voltage transmission is ensured.
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