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Power distribution network protection signal on-line regular checking method and system

A technology for protecting signals and distribution networks, applied in the field of electric power, can solve problems such as low detection efficiency and affect normal power supply, and achieve the effect of reducing the intensity and risk of on-site operations

Active Publication Date: 2022-07-08
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This application provides an online fixed detection method and system for distribution network protection signals, which are used to solve the existing technology that requires the equipment to be powered off or the secondary circuit is off the grid to detect the protection signal, which affects the normal power supply and has low detection efficiency. question

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  • Power distribution network protection signal on-line regular checking method and system
  • Power distribution network protection signal on-line regular checking method and system

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Embodiment Construction

[0034] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0035] Terminology Explanation:

[0036] Online regular inspection of distribution network protection signals: On the premise that the distribution network lines do not stop power supply, through effective technical measures, the protection function and the protection signal are regularly inspected.

[0037] Protectio...

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Abstract

The invention discloses a power distribution network protection signal on-line regular checking method and system, and the method comprises the steps: obtaining a list of a power distribution network automation switch, and setting a plurality of test items of a switch protection function; reading protection constant value information of a protection device of the i-th automatic switch in sequence according to the list, and obtaining secondary values of real-time voltage and current collected by the automatic switches; setting a test constant value and a test action time limit of the automatic switch according to the secondary value, and generating a constant value modification instruction; issuing a constant value modification instruction to the protection device, so that the protection device changes the state of the functional pressing plate in response to the constant value modification instruction, and modifies the protection constant value information according to the constant value modification instruction based on one of the plurality of test items; receiving a test protection signal sent by the protection device, and according to the test protection signal; the problems that in the prior art, protection signals can be detected only after equipment is powered off or a secondary circuit is offline, normal power supply is affected, and the detection efficiency is low are solved.

Description

technical field [0001] The present application relates to the field of electric power technology, and in particular, to a method and system for on-line regular inspection of a protection signal of a distribution network. Background technique [0002] Modern society has higher and higher requirements on the reliability of power supply of power grid, especially the reliability of power supply of distribution network. In order to ensure the reliability of the power supply of the distribution network, the distribution network protection device is often used to quickly isolate the faulty area and ensure the normal power supply of the non-faulty area. Therefore, it is necessary to periodically check the operation status and protection action logic of the distribution network switch protection device. The distribution network protection device does not generate any alarms during normal operation. In order to ensure that it can normally send out alarm signals or actions when the pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/327
CPCG01R31/00G01R31/327Y04S10/20
Inventor 欧阳卫年李响倪伟东区伟潮陈锦荣周荣斌周俊宇卢颖李高明谭振鹏黄红远彭飞进朱延廷姚若昊
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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