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Integrated grounding system applied to urban rail transit adopting alternate current traction power supply system

A technology of urban rail transit and grounding system, which is applied in the field of urban rail transit to reduce grounding resistance and ensure the safety of equipment and personnel

Active Publication Date: 2018-11-13
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an integrated grounding system for urban rail transit that is applied to the AC traction power supply system, effectively solves the grounding problem of urban rail transit in the AC traction power supply system, and ensures the safety of equipment and personnel

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  • Integrated grounding system applied to urban rail transit adopting alternate current traction power supply system
  • Integrated grounding system applied to urban rail transit adopting alternate current traction power supply system
  • Integrated grounding system applied to urban rail transit adopting alternate current traction power supply system

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] refer to Figure 1 to Figure 4 , a comprehensive grounding system for urban rail transit that is applied to the AC traction power supply system according to the present invention. The uplink rail 4 and the downlink rail 5 that pass through along the line are used as the main grounding carrier, and the uplink traction network return line 2 and the downlink traction network erected along the line are used as the main grounding carrier. The grid return flow line 3 is an auxiliary grounding carrier to build a comprehensive grounding equipotential platform, including the grounding system of traction power supply facilities, the grounding system of shield tunnel section and station, the grounding system of viaduct section and the grounding system of subgrade section.

[0026] Its main features are as follows:

[0027] refer to figure 1 The traction p...

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Abstract

The invention provides an integrated grounding system applied to urban rail transit adopting an alternate current traction power supply system. The grounding problem of the urban rail transit adoptingthe alternate current traction power supply system is solved, and the safety of equipment and personnel is ensured. The traction power supply system working ground (current returning access) is constituted by an upward steel rail, a downward steel rail, a catenary current returning line and the ground, and an upward steel rail conductor and a downward steel rail conductor are completely and transversely connected at the 500-600 m interval. The working ground (current returning access) is in single-point reliable connection with grounding devices of an integrated ground network of stations along a line, an interval air shaft ground network, a contact transverse channel ground network, a traction substation ground network, a tunnel, a bridge and the like, an equipotential platform is constructed while the grounding resistance of the system is reduced, and meanwhile, the situation that all systems are connected with the strong electricity working ground to become the strong electricity system current returning access is avoided.

Description

technical field [0001] The invention relates to an urban rail transit of an AC traction power supply system, in particular to an integrated grounding system for an urban rail transit applied to an AC traction power supply system. Background technique [0002] Urban rail transit usually adopts DC traction power supply system, but with the expansion of city scale and scope, the line length has been greatly increased compared with traditional projects, and the demand for operating speed has also increased significantly. AC traction power supply system. [0003] For urban rail transit projects using AC traction power supply system, in addition to the traction power supply system, communications, signals, tunnels, bridges, tracks, etc. basically follow the DC system scheme, so that the grounding of various systems cannot follow the AC traction system railway scheme. It is impossible to adopt the urban rail transit scheme of the traditional DC traction system. [0004] There are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60M5/02
CPCB60M5/02Y02E40/40
Inventor 邓云川文菓徐剑李良威刘梅许晓蓉李剑严希李强
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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