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Triangular wiring structure for medium-voltage power distribution network

A wiring structure and distribution network technology, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of low reliability of distribution network wiring and power supply, and achieve improved line power supply reliability, rapid power supply recovery, and failure The effect of reducing the range of influence

Pending Publication Date: 2020-02-21
SHENZHEN POWER SUPPLY BUREAU
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a delta connection mode applied to the medium-voltage distribution network, which solves the problem of unreliable power supply of the distribution network connection in the existing open-loop operation mode without the need to replace a large number of load switches. high problem

Method used

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  • Triangular wiring structure for medium-voltage power distribution network

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In order to enable those of ordinary skill in the art to more clearly understand the purpose, technical solutions and advantages of the invention, the invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Such as figure 1 As shown, a schematic structural diagram of an embodiment of a delta connection structure for a medium voltage distribution network provided by the present invention is shown. In this embodiment, the delta connection structure for medium voltage distribution network includes:

[0023] Three 10K buses drawn from three substations (11, 12, 13): the first bus 21, t...

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Abstract

The invention provides a triangular wiring structure for a medium-voltage power distribution network, and the structure adopts the open-loop connection of three power distribution lines, wherein eachpower distribution line is divided into two branch lines by a switch room, and line loads are averagely distributed on the two branch lines. Six branches of a three-circuit line are connected throughan interconnection switch. According to the embodiment of the invention, after a single line fault occurs, only a user of a branch line where a fault point is located experiences the short-time powerfailure, and the fault influence range can be reduced by half; meanwhile, through the switching between the interconnection switch and a section switch, users in a non-fault area can be switched froman interconnection line to power supply, and rapid power supply recovery is realized, so the power supply reliability of the line is greatly improved.

Description

Technical field [0001] The invention belongs to the field of medium-voltage power distribution network, and more specifically relates to a triangular wiring structure applied to a medium-voltage power distribution network. Background technique [0002] The medium voltage distribution network in cities at home and abroad generally adopts a ring network structure, and its operation mode is divided into two types: open-loop operation and closed-loop operation. Among them, the open-loop operation mode, that is, the contact switch between the various distribution lines that communicate with each other during normal operation is normally open. After a single feedback feeder fails, the fault isolation is achieved by opening the section switches on both sides of the fault point, and then the tie switch is closed Power supply to the non-faulty segment. In order to save investment, in general, load switch equipment is used for section switches. Since the load switch equipment cannot inte...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02H7/26
CPCH02H7/262
Inventor 程卓曾伟东杨文锋舒舟廖威
Owner SHENZHEN POWER SUPPLY BUREAU
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