Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Live verification method of current transformer

A technology of current transformer and calibration method, which is applied in the direction of instruments, measuring electric variables, measuring devices, etc., can solve problems such as inability to calibrate current transformers, inability to detect live current transformers, etc., and achieve the effect of improving reliability

Active Publication Date: 2016-10-26
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only be carried out in a power failure or offline state, and it cannot perform live detection on the current transformer, especially the verification of the current transformer after live replacement.

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
  • Live verification method of current transformer
  • Live verification method of current transformer
  • Live verification method of current transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] A live calibration method for a current transformer provided by an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0037] figure 1 It is a schematic diagram of the implementation process of a charging verification method for a current transformer in an embodime...

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 provides a live verification method of a current transformer. The method comprises a step of shielding the magnetic field generated by the current which goes through a primary side conductor in a current transformer to be detected, a step of introducing current into the current transformer to be detected, a step of detecting the real value of verification current, and a step of calculating the measurement error of the current transformer to be detected. Compared with the prior art, the live verification method and system of a current transformer provided by the invention have the advantages that the interference of a verification result by the current in the primary side conductor is eliminated by the shielding layer, the reliability of verification is improved, and the live detection of the current transformer to be detected is realized at the same time.

Description

technical field [0001] The invention relates to the technical field of current transformer calibration, in particular to a live calibration method of a current transformer. Background technique [0002] In the lines of power generation, power transformation, power transmission, power distribution and power consumption, the current size varies greatly, ranging from a few amps to tens of thousands of amps. In order to facilitate measurement, protection and control, it needs to be converted into a relatively uniform current. In addition, the voltage on the line is generally relatively high, such as direct measurement is very dangerous. The current transformer plays the role of current conversion and electrical isolation. It is a sensor for secondary equipment such as measuring instruments and relay protection in the power system to obtain electrical primary circuit current information. The current transformer converts high current into low current in proportion. The primary si...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 邓占锋陈硕牛晓晨刘占元侯继彪郑天祥李璐孙海江李春城
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com