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cable system

A cable system and cable technology, applied in electrical components and other directions, can solve the problems of large circulating current loss in the cable system, and achieve the effect of solving the large circulating current loss, reducing the circulating current loss and realizing economic benefits.

Active Publication Date: 2017-10-27
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a cable system to solve the problem of large circulation loss of the cable system in the prior art

Method used

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] The embodiment of the present invention provides a cable system, and the cable system provided in the embodiment of the present invention is introduced in detail below:

[0028] The cable system provided by the embodiment of the present invention mainly includes a cable support frame, a three-phase cable 10 and a return line, and the three-phase cable 10 includes A-phase cables, B-phase cables and C-phase cables all arranged on the cable support frame, The return line includes a first section and a second section connected by the first transposition point C1, the first section is laid on the first return line position 14, and the second section is laid on the second return line position ...

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Abstract

The invention discloses a cable system. Including: cable support frame; three-phase cables, including A-phase cable, B-phase cable and C-phase cable, all arranged on the cable support frame; and return line, including the first section connected through the first transposition point and The second section, the first section is laid on the position of the first return line, and the second section is laid on the position of the second return line, wherein the position of the first return line is set on one side of the A-phase cable, and the second section is laid on the position of the second return line. The position of the flow line is set on one side of the B-phase cable and / or one side of the C-phase cable, and the first return line position and the second return line position are different return line positions. The present invention solves the problem of large circulation loss of the cable system in the prior art, further reduces the circulation loss of the cable system during normal operation, and realizes saving of economic benefits.

Description

technical field [0001] The invention relates to a cable system. Background technique [0002] In order to ensure the safety and stability of the cable system in the power grid, when the metal sheath of a high-voltage single-core cable is grounded at one end, an insulated conductor with low impedance is often laid along the line and grounded at both ends as a return line. When a short-circuit fault occurs in the system, the existence of the return line can greatly reduce the induced voltage on the metal sheath, and offset or reduce the impact on adjacent communication and control lines. [0003] However, under normal operating conditions, the return line itself will generate a circulating current with the earth as the loop, resulting in loss and affecting the economical operation of the system. [0004] In order to reduce the circulating current and loss on the return line, for the horizontally arranged three-phase cables 10, they are usually arranged according to the princi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G9/00
Inventor 张晓颖卞斌吴迪仇天骄马学良秦强王军
Owner STATE GRID CORP OF CHINA