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

Parameter Calculation Method, Device and Terminal Equipment in Current Transformer Verification

A current transformer and parameter calculation technology, which is applied in the field of parameter calculation in the verification of current transformers, can solve problems such as the inability to estimate the technical parameters of the main equipment, and achieve the effect of improving reliability

Active Publication Date: 2021-03-16
STATE GRID HEBEI ELECTRIC POWER RES INST +3
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a parameter calculation method, device and terminal equipment in the verification of current transformers to solve the problem in the prior art that it is impossible to estimate the technical parameters of the main equipment during the verification of UHV current transformers

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
  • Parameter Calculation Method, Device and Terminal Equipment in Current Transformer Verification
  • Parameter Calculation Method, Device and Terminal Equipment in Current Transformer Verification
  • Parameter Calculation Method, Device and Terminal Equipment in Current Transformer Verification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] figure 1 It shows a schematic diagram of the implementation flow chart of the parameter calculation method in the verification of current transformers, and the details are as follows:

[0048] Step S101: Set the primary side wire as the first ring, set the second ring inside the first ring, measure the magnetic induction intensity of the primary side wire to any point on the second ring; the first ring and The second rings are concentric circles.

[0049] It is easy to understand that for the primary wire with the same perimeter, the inductance is the largest when it is set as a circular model. Therefore, for a certain length of the primary wire, the inductance value under the circular model is calculated, and the circular model is set as The inductance value is used as the upper limit of the inductance value in the actual loop, and then according to the calculated parameter value, that is, the upper limit of the inductance value, the technical parameters of the main e...

Embodiment 2

[0101] image 3 It is a schematic diagram of a parameter calculation device 100 in the verification of a current transformer provided by an embodiment of the present invention. Such as image 3 As shown, the parameter calculation device 100 in the current transformer verification of this embodiment includes: a processor 110, a memory 120, and a computer program 121 stored in the memory 120 and operable on the processor 110, for example, determined from Sensitive scoring program. When the processor 110 executes the computer program 121, it realizes the steps in the above embodiments of the parameter calculation method in the verification of each current transformer, for example figure 1 Steps 101 to 106 are shown.

[0102]The parameter calculation device 100 in the verification of the current transformer may be a computing device such as a desktop computer, a notebook, a palmtop computer, or a cloud server. The parameter calculation device in the verification of the current...

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 is suitable for the technical field of electricity metering, and provides a parameter calculating method and device in verification of a current transformer and a terminal device. The method includes the steps of arranging a first ring on a primary side wire, arranging a second ring in the first ring, measuring the magnetic induction intensity of the primary side wire at any point onthe second ring, determining an outer magnetic chain generated by the primary side wire according to the magnetic induction strength, determining outer self inductance of the primary side wire, determining circuit self inductance of the first ring in combination with inner self inductance of the primary side wire, conducting linear fitting on the circuit self inductance of the first ring, and determining the parameter calculation in error measurement of the current transformer on a testing site according to the fitting self inductance value. By means of the parameter calculating method and device in verification of the current transformer and the terminal device, by calculating the inductance value corresponding to a wire circular model, parameters of the testing site are determined, andthe parameter setting reliability during error measurement of the current transformer is improved.

Description

technical field [0001] The invention belongs to the technical field of electric energy measurement, and in particular relates to a parameter calculation method, device and terminal equipment in the verification of current transformers. Background technique [0002] The current transformer is one of the main components in the power system, and it is an indispensable element in the metering and measurement work. According to the provisions of the verification regulations, the current transformer should be verified every two years. According to the requirements of the measurement law, the technical parameters of the main equipment must be reliable and stable. However, for UHV current transformers, due to the large exchange power in the line, the current ratio of current transformers reaches up to 6000A / 1A, and the test current reaches 7200A according to the requirements of the verification regulations in the field test. In the field inspection test of large current transforme...

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 Patents(China)
IPC IPC(8): G06F17/11
CPCG06F17/11
Inventor 曹晓波马红明孙冲李传阎超孔伟忠
Owner STATE GRID HEBEI ELECTRIC POWER RES INST