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Wave recording triggering method and system used in relay protection device test based on analog quantity

A relay protection device and analog quantity technology, applied in the direction of measuring device, measuring electricity, measuring electrical variables, etc., can solve problems such as analysis and protection

Active Publication Date: 2020-12-29
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The protection device generally does not trigger the wave recording, so it is impossible to analyze why the protection refuses to move through the wave recording data

Method used

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  • Wave recording triggering method and system used in relay protection device test based on analog quantity
  • Wave recording triggering method and system used in relay protection device test based on analog quantity
  • Wave recording triggering method and system used in relay protection device test based on analog quantity

Examples

Experimental program
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Effect test

Embodiment 1

[0044]This embodiment provides a recording trigger method used in the test of an analog-based relay protection device, such asfigure 1 , Including the following steps:

[0045]S1: Set the analog channel number, the pre-cycle number of the test analog and the effective value of the test analog in the relay protection device;

[0046]S2: Set the allowable trigger recording flag, and initialize the allowable trigger recording flag;

[0047]S3: In each sampling interruption, determine whether to trigger the recording according to the current sampling point and the judgment flag in the relay protection device;

[0048]S4: If it is determined that the wave recording is triggered, the relay protection device will record the wave.

[0049]In step S1, the analog channel number nChn, the test analog pre-cycle number nWavePre, and the test analog effective value value are all fixed values.

[0050]In step S2, the setting value of the allowable trigger recording flag includes 0 and 1, where 0 means that the trig...

Embodiment 2

[0062]This embodiment provides a recording trigger system used in the test of an analog-based relay protection device, such asimage 3,include:

[0063]A setting module, which sets the analog channel number, the test analog pre-cycle number, and the effective value of the test analog in the relay protection device;

[0064]An initialization module, the initialization module sets a trigger recording permission flag, and initializes the trigger recording permission flag;

[0065]A judging module, which determines whether to trigger the wave recording according to the current sampling point and the judgment flag in the relay protection device in each sampling interrupt;

[0066]The wave recording module, the wave recording module performs wave recording when the judgment module determines that the wave recording is triggered.

[0067]The same or similar reference numbers correspond to the same or similar parts;

[0068]The terms describing the positional relationship in the drawings are only used for exe...

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PUM

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Abstract

The invention discloses a wave recording triggering method used in a relay protection device test based on analog quantity. The wave recording triggering method comprises the following steps of S1, setting an analog quantity channel number, a test analog quantity preposed cycle number and a test analog quantity effective value in the relay protection device; S2, setting an allowable trigger recording mark, and initializing the allowable trigger recording mark; S3, in each sampling interruption, judging whether to trigger wave recording or not according to a current sampling point and a judgment mark in the relay protection device; and S4, if it is judged that wave recording is triggered, performing wave recording by the relay protection device. By means of the method, no extra hardware needs to be added, the relay protection device only needs to detect the analog quantity with the channel number being nChn when a relay protection test is carried out, wave recording of the device is triggered by nWavePre cyclic waves after the analog quantity with the effective value being value is detected, and therefore when the analog quantity needing to be tested is loaded, no matter whether protection is started or acts or not, the device can trigger wave recording.

Description

Technical field[0001]The present invention relates to the technical field of relay protection devices, and more specifically, to a recording trigger method and system used in the test of a relay protection device based on analog quantities.Background technique[0002]The relay protection devices operating in the existing power plants and substations are all microprocessor-based relay protection devices. After studying the related algorithms of relay protection, it is generally embodied in the microprocessor-based relay protection device in the form of codes. In order to check whether the related algorithms of relay protection and the relay protection devices meet the requirements, the relay protection devices developed need to go through strict testing before they can be applied.[0003]There are dynamic simulation tests, static simulation tests and other methods for testing relay protection devices. Their common feature is to output the relevant analog quantity and switch quantity thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 武利会陈道品倪伟东罗春风何子兰吴海江王跃强刘益军范心明范伟成罗志文胡敏习伟李鹏李肖博姚浩于杨蔡田田
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID