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Parameter determination method, parameter determination device and direct-current parallel cable

A parameter determination, cable technology, applied in the field of DC parallel cables, can solve problems such as cable breakdown

Active Publication Date: 2020-10-27
SICHUAN ENERGY INTERNET RES INST TSINGHUA UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the purpose of this application is to provide a parameter determination method, a parameter determination device and a DC parallel cable to improve the problem that the cable is prone to breakdown in the existing tributary parallel power transmission and distribution technology

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  • Parameter determination method, parameter determination device and direct-current parallel cable
  • Parameter determination method, parameter determination device and direct-current parallel cable
  • Parameter determination method, parameter determination device and direct-current parallel cable

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Embodiment Construction

[0068] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0069] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ord...

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Abstract

The invention provides a parameter determination method, a parameter determination device and a direct-current parallel cable, and relates to the technical field of direct-current power transmission and distribution. According to the method, firstly, the number of to-be-arranged direct-current parallel cables is obtained, the direct-current parallel cables at least comprise two branch cables, andeach branch cable comprises a positive cable and a negative cable; secondly, the voltage drop relation of loops between different cables and the ground is determined based on the number of the cables,and the voltage drop relation comprises a voltage drop matrix, an impedance matrix and a current matrix; then, the mutual impedance relation between loops between different cables and the ground is obtained based on preset conditions and the voltage drop relation, and the preset conditions include that currents between branch cables are the same, currents between the positive electrode cable andthe negative electrode cable are the same in magnitude, and the directions are opposite; and finally, arrangement parameters among different cables are determined based on the mutual impedance relationship. Based on the method, a problem that the cable is easily broken down in the existing branch parallel power transmission and distribution technology can be improved.

Description

technical field [0001] The present application relates to the technical field of DC power transmission and distribution, in particular, to a parameter determination method, a parameter determination device and a DC parallel cable. Background technique [0002] In the DC power transmission and distribution technology, as the power load continues to rise, in order to meet the transmission capacity requirements of low-voltage DC lines, in actual engineering design, multiple single-core cables can be operated in parallel for unipolar lines. However, research by the inventors has found that when a plurality of single-core cables are connected in parallel for tributary power transmission and distribution, the problem of cable breakdown is likely to occur. Contents of the invention [0003] In view of this, the purpose of this application is to provide a parameter determination method, a parameter determination device and a DC parallel cable, so as to improve the problem that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/18G01R27/08H02J1/00H02G1/06
CPCG01R27/18G01R27/08H02J1/00H02G1/06
Inventor 周特姚大伟杨超包维瀚李伟起
Owner SICHUAN ENERGY INTERNET RES INST TSINGHUA UNIV
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