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

Line impedance stabilization network structure suitable for pulse current injection

A technology of line impedance and network structure, applied in the field of electromagnetic pulse conduction effect experiments, can solve the problems of inability to guarantee electromagnetic pulse protection capability, inability to guarantee insulation breakdown, and high voltage peaks, so as to improve the electromagnetic pulse protection performance, protect the external power grid, The effect of reducing the impact

Active Publication Date: 2021-12-03
XI AN JIAOTONG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the electromagnetic pulse injected by the pulse current has a fast rise time (rise time <20ns), high amplitude (thousands of amps) and high peak voltage (hundreds of kilovolts), the conventional LISN cannot guarantee that it will withstand the impact of the electromagnetic pulse Insulation breakdown does not occur sometimes, and the existing LISN filter structure is not designed to suppress electromagnetic pulses, and its circuit structure cannot guarantee good electromagnetic pulse protection capabilities

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
  • Line impedance stabilization network structure suitable for pulse current injection
  • Line impedance stabilization network structure suitable for pulse current injection
  • Line impedance stabilization network structure suitable for pulse current injection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention is described in further detail below:

[0030] A line impedance stabilization network (LISN) structure suitable for pulse current injection, the LISN structure is designed as a three-phase four-wire structure, composed of four branches with the same circuit structure.

[0031] In terms of circuit structure design, on the basis of the conventional 5μH type LISN circuit structure in GJB 151B-2013, the capacitance value of the ground capacitance and the first-level inductance are increased, so the circuit structure of each branch of the LISN is an L-C-L T A type low-pass filter is connected in parallel with a capacitor-resistance branch. This structure has the impedance stability curve of the 5μH type LISN in GJB 151B-2013 and good pulse current protection performance.

[0032]The physical structure of the LISN structure includes a stainless steel shell 1, a 5μH air core inductor with enhanced inter-turn pressure resistance 2, a 30μF polypropylene fil...

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

PropertyMeasurementUnit
Cross-sectional areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a line impedance stabilization network structure suitable for pulse current injection, which takes a pulse current injection experiment as an application background, and on the basis of a 5 mu H-type LISN circuit structure in the existing GJB 151B-2013, by increasing ground capacitance and adding a primary inductor, a line impedance stabilization network with good impedance stabilization performance and electromagnetic pulse protection performance is designed. In actual device selection and physical layout design, the turn-to-turn insulation reinforced air core inductor is designed by oneself according to the characteristics of short rising time and high voltage peak value of electromagnetic pulse, a measurement loop is removed in a targeted manner, and a high-voltage metal oxide film resistor is selected. Finally, the impedance stability curve of the 5 [mu] H-type LISN in GJB 151B-2013 (the deviation from the impedance curve of the 5 [mu] H-type LISN in GJB 151B-2013 is smaller than 5%) and the good pulse current protection performance (under the output of a pulse generator specified in the GJB 8848-2016 and MIL-STD-188-125-2 standards, the attenuation of the pulse current can reach 60 times) are achieved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic pulse conduction effect experiments, and in particular relates to a line impedance stabilization network (LISN) structure suitable for pulse current injection. Background technique [0002] With the rapid development of power systems and electrical and electronic equipment in recent decades, the influence of electromagnetic environment and electromagnetic pulses on power equipment and electrical and electronic equipment has attracted more and more attention from various scholars. Among them, strong electromagnetic environments such as high-altitude electromagnetic pulse (HEMP) have the characteristics of high field strength, wide spectrum and wide coverage area, which is a huge threat to power equipment and electrical and electronic equipment. Existing research results have shown that strong electromagnetic environments such as high-altitude nuclear electromagnetic pulses enter power equip...

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): G01R31/00G01R1/04G01R1/02
CPCG01R31/001G01R1/0416G01R1/04G01R1/02
Inventor 谢彦召王禹博葛延鹏吴钰颖李泽同
Owner XI AN JIAOTONG UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More