Method and system for calibrating absolute delay time

An absolute delay and time technology, applied in the field of calibration of absolute delay time, can solve problems such as inaccurate detection and calibration methods

Pending Publication Date: 2018-04-20
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
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Problems solved by technology

[0003] The invention provides a method and system for calibrating the absolute delay time to solve the inaccurate problem of the existing detection and calibration methods

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  • Method and system for calibrating absolute delay time
  • Method and system for calibrating absolute delay time
  • Method and system for calibrating absolute delay time

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[0043] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0044] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that the terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or ...

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Abstract

The invention discloses a method for calibrating the absolute delay time. The method comprises the following steps of generating a standard sine wave table by using a data processing platform; using asignal processing module to process the standard sine wave table; obtaining the standard voltage current signals and sending the standard current signals to equipment to be tested; when the preset time delay threshold value is reached, using the data processing platform to process the standard sine wave table; obtaining a sampling value SV message; sending the sampling value SV message to the equipment to be tested; performing analog quantity collection by the equipment to be tested while receiving the sampling value SV; obtaining a first sapling value of the quantity threshold value of a preset collecting point; respectively performing fast Fourier transform on a second sampling value corresponding to the first sampling value and the sampling value SV message; obtaining the phase time difference value of the first sampling value and the second sampling vale, i.e., the absolute delay time; determining the absolute delay time of the equipment to be tested according to the absolute delay time and the preset time delay threshold value.

Description

technical field [0001] The present invention relates to the technical field of electronic transformer calibration, and more specifically, to a method and system for calibrating absolute delay time. Background technique [0002] Smart substation is one of the core platforms to realize energy conversion and control in the construction of smart grid, and is an important part of smart grid. With the gradual advancement of my country's smart grid construction work, a large number of new-generation smart substations or smart transformation substations have been put into operation. In these smart substations, electronic transformers as "power sensors" have been widely used. Under the current technical conditions, the accuracy detection system of the electronic transformer and the merging unit mainly adopts the synchronization method, and the angle difference and the ratio difference of the electronic transformer and the merging unit are obtained by comparing the data of the standa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 杨春燕熊前柱胡浩亮雷民周峰李鹤李登云徐子立聂琪万鹏黄俊昌潘瑞赵双双
Owner CHINA ELECTRIC POWER RES INST
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