Direct current power supply system full loop resistance testing method for rail transit

A technology for DC resistance testing and power supply systems, applied in impedance measurement, measuring resistance/reactance/impedance, measuring devices, etc., can solve the problems of time-consuming consumables, incomplete measurement of detection methods, etc., achieve low cost, convenient and fast implementation, Reduces the effect of shorting wires

Active Publication Date: 2019-01-04
CHINA RAILWAY 12TH BUREAU GRP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention overcomes the deficiencies of the existing technology, based on solving the problems of incomplete measurement and time-consuming consumables of the existing detecti...

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  • Direct current power supply system full loop resistance testing method for rail transit
  • Direct current power supply system full loop resistance testing method for rail transit
  • Direct current power supply system full loop resistance testing method for rail transit

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Embodiment Construction

[0021] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not All the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Such as figure 2 Shown is a schematic diagram of the circuit connection of the rail transit traction DC power supply system, in which multiple traction station sections supply power to the catenary section sections, the upstream contact network is near the traction station, and the full line contact network is divided into multiple sections by a segment insulator. Power supply section. Among them, in each traction...

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Abstract

The invention belongs to the technical field of power equipment inspection and testing, and provides a direct current power supply system full loop resistance testing method for rail transit. The process includes the following steps: S1, performing preparation work; S2, measuring loop resistance of an uplink overhead contact line and a downlink overhead contact line, measuring the loop resistanceof the uplink overhead contact line and steel rails; and measuring the loop resistance of the uplink overhead contact line and the steel rails; and S3, obtaining loop resistance values measured by thestep S2, calculating the resistance R1 of the uplink overhead contact line, the resistance R2 of the downlink overhead contact line and the resistance R3 of the steel rails, and judging the major loop performance of a to-be-measured section according to calculation results. The method can measure the resistance of a complete circuit through the on and off of a switch in a to-be-measure loop, so that tests are simple and reliable, and the method can be widely applied to the field of rail transit direct current power supply system detection.

Description

Technical field [0001] The invention belongs to the technical field of power equipment inspection and detection, and specifically relates to a method for testing the DC resistance of a full loop of a rail transit DC power supply system. Background technique [0002] The resistance value of the full loop of the DC power supply system is an important data for the installation of rail transit power supply equipment, the electrical connection of the catenary (rail), and the quality and acceptance of the rail return electrical connection. Its function is to check the installation quality of electrical equipment and the integrity of the loop, and Discovery of defects such as poor contact due to poor installation, poor welding or mechanical looseness caused by vibration during operation, avoiding accidents caused by poor contact, and an important means to ensure the safe and stable operation of equipment. [0003] In the existing technology, such as figure 2 As shown, usually a short wire...

Claims

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Application Information

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IPC IPC(8): G01R27/08G01R27/16
CPCG01R27/08G01R27/16
Inventor 张国蓬马强路遥
Owner CHINA RAILWAY 12TH BUREAU GRP
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