Grounding line state perception positioning method based on multi-source sensing and GNSS

By combining multi-source sensing with GNSS, candidate connection schemes are generated and coded detection signals are matched, solving the problem of misjudgment of grounding wire location in existing technologies. This enables accurate and stable grounding wire status perception in complex environments and improves the safety of maintenance operations.

CN122307593APending Publication Date: 2026-06-30TONGHUA POWER SUPPLY COMPANY STATE GRID JILIN ELECTRIC POWER +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TONGHUA POWER SUPPLY COMPANY STATE GRID JILIN ELECTRIC POWER
Filing Date
2026-06-01
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing GNSS-based grounding wire positioning methods struggle to accurately determine the actual connection location, connection direction, and grounding wire status in complex environments, which can easily lead to misjudgments and reduce the accuracy of positioning results.

Method used

A multi-source sensing and GNSS combination method is adopted. Candidate splicing schemes are generated by acquiring GNSS coordinates, positioning quality, attitude data and line GIS topology. The actual splicing scheme is determined by matching the response data of the coded detection signal with the preset response characteristics. The grounding wire status is confirmed by combining clamping status and grounding status data.

Benefits of technology

It improves the accuracy and stability of grounding wire status sensing and positioning results in complex environments, and can identify loose connections on the conductor side, unreliable grounding side contacts, and abnormal grounding wire connections, ensuring the safety of maintenance operations.

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Abstract

This invention relates to the fields of radio navigation, positioning, and presence detection technology, and discloses a grounding wire status perception and positioning method based on multi-source sensing and GNSS. By acquiring maintenance work orders, line GIS topology, and grounding wire layout information, operational constraint information is generated. GNSS coordinates, positioning quality, and attitude data of the conductor end and grounding end of the grounding wire are collected to generate multiple candidate connection schemes. After initial grounding wire connection, an coded detection signal is applied, response data is collected, and matched with preset response characteristics corresponding to each candidate connection scheme to determine the actual connection scheme, actual connection position, connection direction, and grounding wire status. This reduces GNSS errors and misjudgments caused by single-state detection, improving the reliability of grounding wire connection positioning and status confirmation.
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