Curved Parallel Overhead Line Layout for Electrified Roadway Bends
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Solution Overview
Problem
Existing overhead line systems face challenges in adapting to non-track-bound vehicles, requiring stricter positioning specifications and difficulty in electrifying curved roadways, which poses operational and safety risks.
Innovation Solution
The overhead line system employs multiple catenary systems with contact wires and carrying cables arranged in parallel zones, featuring curved profiles and skewed spacings to follow traffic lane curves, preventing collisions and ensuring operational safety, while allowing for two-pole electrification without reverse current transmission across traffic lanes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contact wires are arranged in parallel zones to form a continuously accessible overhead line, then operational safety is improved through safe changeover, but positioning precision requirements become excessively strict when adapting to existing roadways
Solution Approach 1:
The patent applies curvature by arranging contact wires in arc-shaped parallel zones that follow the curvature of existing roadways. Instead of straight parallel lines, the contact wires are positioned along curved paths with calculated radii, allowing the overhead line system to adapt to curved road sections while maintaining safe changeover operations and reducing positioning precision requirements.
2Adaptability or versatility
If overhead line systems are adapted to existing roadways for non-track-bound vehicles, then adaptability is improved, but collision risk increases due to stricter positioning specifications
Solution Approach 1:
The patent reduces collision risk by using curved parallel zones where contact wires follow arc paths. This curvature provides natural spacing and separation between contact wires and the roadway, creating safety margins that prevent collisions while maintaining adaptability to existing curved roadways.
Solution Approach 2:
The patent transitions from two-dimensional straight parallel positioning to three-dimensional curved spatial arrangement. By introducing vertical and horizontal curvature components, the system gains additional spatial dimensions for safety separation while maintaining adaptability to roadway geometry.
3Ease of manufacture
If contact wires are arranged in straight parallel zones, then ease of installation is improved, but inability to electrify curved roadways limits versatility
Solution Approach 1:
The patent enables electrification of curved roadways by replacing straight parallel zone arrangements with curved parallel zones. The contact wires are positioned along arc-shaped paths that match the roadway curvature, allowing the system to follow and electrify curved road sections while maintaining parallel zone functionality for safe operations.
Data Source
AI summary
An overhead line system provides electrical energy for an electrically driven vehicle by use of an overhead line. The overhead line system has a plurality of catenary systems which each have a contact wire connected to a carrying cable by a plurality of connecting devices and which are arranged, on the basis of parallel zones, to form a continuously accessible overhead line. The overhead line system further has an overhead line which is arranged in a curvature section in such a way that the vertical projection of the overhead line has a curved profile in a horizontal plane. The overhead line system also has a curved parallel zone which is arranged in the curvature section in such a way that the vertical projection of the parallel zone into the horizontal plane follows the curved profile of the projection of the at least one overhead line in the curvature section.