Capacitive voltage transformer performance detection method and system

A technology of voltage transformer and detection method, which is applied in capacitance measurement, voltage divider, measurement of resistance/reactance/impedance, etc., can solve problems such as poor accuracy, insulation performance of capacitive voltage transformer, voltage distribution ratio error, etc. achieve the effect of efficient calculation

Active Publication Date: 2020-09-01
STATE GRID SHANDONG ELECTRIC POWER +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When testing the performance of capacitive voltage transformers in the prior art, it often only considers the capacitance test value and the factory initial value or rated value of the capacitive voltage transformer, ignoring the internal relationship between the capacitance values ​​of the capacitive voltage transformer , and this internal relationship determines the overall insulation performance, voltage distribution, and transformation ratio error of the capacitor voltage transformer; thus resulting in poor accuracy of the existing performance detection methods of the capacitor voltage transformer

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
  • Capacitive voltage transformer performance detection method and system
  • Capacitive voltage transformer performance detection method and system
  • Capacitive voltage transformer performance detection method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In one or more embodiments, a performance detection method of a capacitive voltage transformer is disclosed, referring to figure 2 , including the following steps:

[0032] (1) Obtain the initial vector of the capacitance value of the capacitive voltage transformer;

[0033] Specifically, refer to figure 1 Given the capacitive voltage transformer capacitive voltage divider schematic diagram, the capacitance value C of the upper section can be obtained through the famous brand data of the capacitive voltage transformer 11 And the voltage division ratio k, the capacitance value in the next section is determined by the capacitance C 12 and the divider capacitor C 2 obtained in series. In order to make the voltage distribution of the capacitive voltage transformer uniform, the capacitance value of the upper section and the capacitance value of the lower section are equal, that is:

[0034]

[0035] The main capacitance of the capacitive voltage divider C 1 by capa...

Embodiment 2

[0067] In one or more embodiments, a capacitive voltage transformer performance detection system is disclosed, including:

[0068] A device for obtaining an initial vector of a capacitance value of a capacitive voltage transformer;

[0069] The device used to obtain the test vector of the capacitance value of the voltage transformer through the high-voltage electrical test;

[0070] A device for calculating the linear correlation coefficient between the initial capacitance value vector and the capacitance value test vector, as a performance detection index of the capacitive voltage transformer;

[0071] A device for detecting the performance of the capacitive voltage transformer based on the index.

[0072] The specific working mode of the above-mentioned device is the same as the implementation process of the method in the first embodiment, and will not be repeated here.

Embodiment 3

[0074] In one or more embodiments, a terminal device is disclosed, including a server, the server includes a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor executes the The program realizes the performance detection method of the capacitive voltage transformer in the first embodiment. For the sake of brevity, details are not repeated here.

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 discloses a capacitive voltage transformer performance detection method and system. The method comprises the following steps: obtaining an initial vector of a capacitance value of the capacitor voltage transformer; obtaining a capacitance test vector of the voltage transformer through a high-voltage electrical test; calculating a linear correlation coefficient of the capacitance initial vector and the capacitance test vector as a capacitance voltage transformer performance detection index; and detecting the performance of the capacitor voltage transformer based on the indexes. The invention discloses the capacitor voltage transformer performance detection method. The method not only considers the deviation between each capacitance value of the capacitor voltage transformer and the delivery initial value, but also considers the inherent law between each capacitance value of the capacitor voltage transformer, so that the capacitance value test result of the capacitor voltage transformer can be calculated more accurately, comprehensively and effectively, and the more accurate performance detection method of the capacitor voltage transformer can be obtained.

Description

technical field [0001] The invention relates to the technical field of power equipment performance detection, in particular to a performance detection method and system for a capacitive voltage transformer. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] As an important electrical equipment, voltage transformer plays an important role in connecting primary equipment and secondary equipment. It is widely used in electric energy metering, relay protection, automatic control and other fields. Its working status is of great significance to ensure the safe operation of the entire power system. . Capacitive voltage transformers have been widely used in voltage levels of 110kV and above due to the advantages of reasonable insulation structure, high insulation strength, significant economy, and full use of coupling capacitors required for carrier...

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): G01R35/02G01R15/06G01R27/26
CPCG01R35/02G01R15/06G01R27/2605
Inventor 陈伟坤吴寿山白志轩雷敏刘鹏孙昭昌葛惠阳张倩
Owner STATE GRID SHANDONG ELECTRIC POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap