A method and device for switching on and off the autorotation function of a 10kv 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 accurate judgment and avoid data distortion

Active Publication Date: 2021-09-24
ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID
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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

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  • A method and device for switching on and off the autorotation function of a 10kv distribution network line
  • A method and device for switching on and off the autorotation function of a 10kv distribution network line
  • A method and device for switching on and off the autorotation function of a 10kv 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 with 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 network. The present invention provides a method and device for switching on and off the autorotation power function of a 10kV distribution network line. The method includes: obtaining relevant information of the line; The historical highest load current in the time period and the real-time load current at the moment before the fault occurs; if the sum of the historical highest load current and the real-time load current of the two switches is not greater than the preset maximum carrying capacity of the line, the contact switch Carry out the action judgment of the autorotation function; otherwise, the contact switch exits the action judgment of the autorotation function; if the action condition of the autorotation function is met, generate the corresponding autorotation function action instruction. The present invention takes the highest load current in history and the real-time load current as the criterion, realizes the intelligent input or withdrawal of the autorotation power function according to the specific line conditions, and avoids the problem of data distortion.

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 Patents(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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