Unlock instant, AI-driven research and patent intelligence for your innovation.

Voltage transformer state evaluation method and device based on multi-index fusion

A technology for voltage transformers and state assessment, which is used in measuring devices, instruments, measuring electrical variables, etc., to achieve the effect of reducing costs and improving the level of operation and maintenance

Active Publication Date: 2020-08-14
武汉格蓝若智能技术股份有限公司
View PDF7 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the present invention further determines the contribution rate of each state evaluation index in the state evaluation process and fuses them to solve the differences caused by each index, and finally realizes the voltage transformer error without relying on standard transformers and non-stop operation. On-line evaluation of status, real-time monitoring of transformer error status

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Voltage transformer state evaluation method and device based on multi-index fusion
  • Voltage transformer state evaluation method and device based on multi-index fusion
  • Voltage transformer state evaluation method and device based on multi-index fusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The embodiment of the present invention provides a method for evaluating the online operation error state of voltage transformers based on multi-indicator fusion, aiming to realize the effective and accurate online operation error state of voltage transformers without relying on standard transformers and running without power failure Evaluate. The present invention extracts the state evaluation index for measuring the error state of the voltage transformer from the real-time operation data of the voltage transformer to be verified, and analyzes and fuses various state evaluation indexes, thereby obtaining the online operation error state evaluation of the voltage transformer result.

[0032] Such as figure 1 As shown, the present invention evaluates the error state of the voltage transformer according to the following steps:

[0033] Step 1, according to the real-time operation data of the voltage transformer, extract and establish such as figure 2 The state evaluat...

Embodiment 2

[0085] An embodiment of the present invention provides a multi-indicator fusion-based online operation error status evaluation device for voltage transformers, including:

[0086] The index system building block is used to extract and establish the status evaluation index system of voltage transformers according to the real-time operation data of voltage transformers;

[0087] A model building module is used to establish a mathematical model of the voltage transformer according to the self-characteristics of the state evaluation index of the voltage transformer, and the mathematical model is used to calculate the scoring value of the state evaluation index;

[0088] The initial state evaluation matrix generation module is used to perform cluster analysis on the score values ​​of the state evaluation indicators, and obtain the evaluation vectors of each state evaluation index according to the membership degree of each state evaluation index score result belonging to each state c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a voltage transformer online operation error state evaluation method and device based on multi-index fusion. The method comprises the steps: extracting a state evaluation index according to real-time operation information of a voltage transformer, and building a state evaluation system; establishing a state evaluation index mathematical model, and acquiring the score of each index; then, performing clustering analysis on evaluation results of the state evaluation indexes to obtain evaluation vectors of the state evaluation indexes, and synthesizing an initial state evaluation matrix; determining the weight of each state evaluation index by adopting an analytic hierarchy process, and solving the difference between the indexes; and carrying out fusion calculation ofa comprehensive state evaluation matrix to obtain an evaluation result of the voltage transformer. On the premise of not depending on a standard transformer and operating without power failure, the online operation error state of the voltage transformer is effectively evaluated. The evaluation method is universal and easy to implement.

Description

technical field [0001] The invention relates to the field of state evaluation and fault diagnosis of power transmission and distribution equipment, in particular to a method and device for evaluating the state of an online operation error of a voltage transformer based on multi-indicator fusion. Background technique [0002] As the key equipment in the power system, the voltage transformer realizes the accurate measurement of the primary voltage under the premise of ensuring the safety of the secondary equipment and electricity, and provides a reliable basis for electric energy metering, status monitoring and relay protection. Ensuring that the voltage transformer is in a stable operating state can ensure the accuracy of the power system in terms of metering and measurement, and improve the reliability of automatic devices and relay protection actions, which is conducive to realizing the safe, stable and economical operation of the power system. [0003] In the actual operat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R35/02G06F17/16G06K9/62
CPCG01R35/02G06F17/16G06F18/23
Inventor 陈勉舟徐云武
Owner 武汉格蓝若智能技术股份有限公司