Switching method and device for self-electricity-rotating function of 10 kV power distribution network line

A technology of electrical function and distribution network, applied in the field of distribution network, can solve problems such as line overload, achieve the effect of accurate judgment and avoid data distortion

Active Publication Date: 2021-08-13
ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, this application aims to solve the problem that the existing self-rotating power function determines the input of the self-rotating power function based on the historical load current and the load of all lines, and the problem of line overload may occur

Method used

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  • Switching method and device for self-electricity-rotating function of 10 kV power distribution network line
  • Switching method and device for self-electricity-rotating function of 10 kV power distribution network line
  • Switching method and device for self-electricity-rotating function of 10 kV power distribution network line

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Embodiment Construction

[0047] In order to make the purpose, features, and advantages of the application more obvious and understandable, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the application. Obviously, the following description The embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0048] see figure 2 and image 3 , figure 2 Shown is the wiring method when two 10kV lines are in normal operation. Among them, the 10kV bus of substation A supplies power to line A, and the 10kV bus of substation B supplies power to line B. There are several switches on the two lines. Electrical function input. S1 and S7 ...

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Abstract

The invention belongs to the technical field of power distribution networks. The invention provides a switching method and device for a self-electricity-rotating function of a 10 kV power distribution network line. The method comprises the steps: related information of the line is acquired; according to the related information of the line, historical maximum load currents of two switches located at the two ends of a fault section on the line in a preset time period and real-time load currents of the two switches at the moment before the fault occurs are obtained; if the sum of the historical maximum load currents and the sum of the real-time load currents of the two switches are not greater than the maximum current-carrying capacity of the preset line, an interconnection switch carries out action judgment on the self-electricity-rotating function; otherwise, the interconnection switch quits the action judgment of the self-electricity-rotating function; and if the self-electricity-rotating function action condition is met, a corresponding self-electricity-rotating function action instruction is generated. According to the method, the historical maximum load currents and the real-time load currents are taken as the criterion, the self-electricity-rotating function is intelligently input or quitted according to the specific line condition, and the problem of data distortion is avoided.

Description

technical field [0001] The application belongs to the technical field of distribution network, and in particular relates to a method and device for turning on and off the circuit of a 10kV distribution network. Background technique [0002] Feeder automation refers to the function of automatically isolating the faulty section of the line and automatically restoring the power supply of the non-faulty section of the line when a fault occurs in the 10kV distribution network line. The 10kV distribution network line autorotation function refers to the function that when the 10kV line as the main power supply fails for some reason, it can automatically switch the power grid users to the 10kV line as the backup power supply for power supply, so as not to cause power failure for users, referred to as the autorotation function , which is one of the functions of feeder automation. The self-rotation power function is an important function to quickly restore the power supply of the non...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02H7/26H02H3/06H02J13/00G01R31/08
CPCG01R31/086H02H3/066H02H7/262H02J3/001H02J3/0073H02J13/00001H02J13/00002H02J13/0004Y02E60/00Y04S10/20
Inventor 戴晓聪郭倍源
Owner ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID
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