Overhead Transmission Line Supervision with Centralized Geodetic Checks
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Solution Overview
Problem
Existing in-place supervision methods for overhead transmission line maintenance operations face challenges due to high network communication and energy consumption, making it difficult to intelligently judge whether the operation site is out of supervision.
Innovation Solution
An in-place supervision method and apparatus that utilizes geographic and geodetic coordinate information, combined with algorithms like elliptic spherical arc length and vector triangle area calculations, to determine the distance and active area of supervisors relative to the operation site, using a scene recorder with a UM220-III chip for positioning, to judge if supervision is within threshold limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If positioning calculation is realized on the scene recorder, then the in-place job-performing conditions of supervisors can be known, but the network information communication traffic and energy consumption of nodes increase significantly
Solution Approach 1:
The patent extracts the positioning calculation function from the scene recorder (edge device) and relocates it to the risk management and control master station system (central server). Only the raw geodetic coordinate data is transmitted over the network, while the computationally intensive distance and area calculations are performed centrally, reducing network traffic and energy consumption at distributed nodes.
Solution Approach 2:
The patent introduces an intermediary calculation approach where the scene recorder acts as a data collection intermediary rather than a computation node. It collects geodetic coordinates from supervisors and transmits them to the central system, which then performs the supervision judgment calculations, thereby mediating between data collection and central processing.
2Reliability
If positioning calculation is realized on the scene recorder, then the in-place job-performing conditions of supervisors can be known, but the solution is not suitable for large-scale popularization
Solution Approach 1:
By extracting the heavy computation from individual scene recorders and centralizing it in the risk management and control master station system, the patent makes the solution scalable. The central system can handle multiple supervisors and operation sites simultaneously without overloading individual devices, enabling large-scale deployment.
Solution Approach 2:
The risk management and control master station system serves as a universal computing platform that can handle positioning calculations for multiple supervisors, operation sites, and different types of maintenance operations simultaneously, making the solution adaptable to large-scale popularization across the power grid enterprise.
3Measurement precision
If the distance and active area calculations are performed continuously, then the supervision status can be accurately judged, but the network communication overhead and calculation amount increase
Solution Approach 1:
The patent implements periodic supervision judgment based on triggering conditions rather than continuous calculation. The system calculates distance and active area only when supervisors arrive at or depart from operation sites, as indicated by changes in geodetic coordinates, thereby reducing unnecessary network communication and computation while maintaining accurate supervision status tracking.
Data Source
AI summary
Disclosed are an in-place supervision method and apparatus suitable for overhead transmission line maintenance operation, the method includes: geographic coordinate information of an overhead transmission line is, written into a risk management and control master station system of the whole electric power operation process, and an in-place supervision algorithm is written into the risk management and control master station system of the whole electric power operation process; geodetic coordinates A of a maintenance operation site and geodetic coordinates B of a supervisor are read; a distance is solved based on an elliptic spherical arc length approximate chord length algorithm; whether the distance S exceeds a threshold value of out of supervision or not is judged. In implementation of the invention, the execution level of in-place supervision of the overhead transmission line operation is improved, and the personal risk of the site of supervision operation is effectively controlled.