Soil multi-impact discharge characteristic parameter analysis method and system

A technology of impulse discharge and characteristic parameters, which is applied in the direction of material analysis, material analysis, and material breakdown voltage through electromagnetic means, can solve the problems of detection accuracy of lightning strike electrical parameters that affect grounding environment soil, and improve detection accuracy and reliability High performance, wide application range, easy to achieve effect

Pending Publication Date: 2021-03-12
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the limitations of the existing soil impact discharge characteristic parameter numerical simulation method and the problem of affecting the detection accuracy of t

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
  • Soil multi-impact discharge characteristic parameter analysis method and system
  • Soil multi-impact discharge characteristic parameter analysis method and system
  • Soil multi-impact discharge characteristic parameter analysis method and system

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Example 1

[0049]Compared to the existing numerical simulation analysis method, this embodiment proposes a method of analyzing the parameter analysis of soil multiple impact discharge characteristics.

[0050] Specific figure 1 As shown, the method of this embodiment mainly includes the steps of:

[0051] Step 1, collect the basic data, and construct a three-dimensional spatial structure based on the basic data.

[0052] The basic data collected by the step of the present embodiment includes electrical parameters and structural parameters, and the electrical parameters include the voltage, current waveform parameters, and electrical parameters of soil medium during continuous impact discharge, such as soil resistivity; structural parameters The actual spatial structure of the discharge channel and the physical structural parameters of the soil discharge environment.

[0053] The electrical parameters of the present embodiment can be obtained based on the grounding system ...

Example Embodiment

[0069] Example 2

[0070] Based on the above-described embodiments, the present embodiment also proposes a multi-sub-impact discharge feature parameter analysis system, figure 2 As shown, the system of the present embodiment includes a data acquisition module, a three-dimensional module, a first parameter analysis module, a constraint condition module, and a subsequent parameter analysis module.

[0071] The data acquisition module of this embodiment is used to collect basic data;

[0072] The three-dimensional module of the present embodiment constructs a three-dimensional spatial structure of the discharge channel based on the basic data;

[0073] The first parameter analysis module of the present embodiment is based on the three-dimensional spatial structure of the discharge channel, and the first numerical calculation model is constructed. The first impact discharge feature parameter inversion calculation is performed by the first numerical calculation model, and the residual...

Example Embodiment

[0077] Example 3

[0078] In this embodiment, the method and system proposed by the above embodiments and systems are applied to specific soil multiplex discharge feature parameters analysis, and the specific process is as follows:

[0079] 1. First determine the object that needs to be calculated, and perform basic data acquisition.

[0080] First, the basic parameters of the discharge environment are collected before the impact current discharge. The size of the discharge sandbox in this case is a side length 20 * 20 * 20cm. The vertical electrode 1 is 10 cm long 10 cm, a metal cylinder having a diameter of 6 mm, and the initial soil resistivity of the soil medium ρ 0 It is 213 Ω · m.

[0081] The electric parameters were collected, and the peak of the soil was injected into the soil of 2 ka, the waveform parameter was 8 / 20μs, the first impact voltage of the collected result was 21.1 kV, and the peak voltage peak was 6.4 kV.

[0082] The discharge channel structure parameters ...

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
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a soil multi-impact discharge characteristic parameter analysis method and system. The method comprises the following steps: collecting basic data, and constructing a dischargechannel three-dimensional space structure based on the basic data; performing first impact discharge characteristic parameter inversion calculation through the first numerical calculation model to obtain soil dielectric impact discharge residual resistivity and equivalent critical breakdown electric field intensity under the action of first impact; judging a multi-impact discharge channel structure and constraint conditions according to the discharge channel three-dimensional space structure; and performing inversion calculation on the post-impact discharge characteristic parameters through the initialized and set post-impact numerical calculation model to obtain the residual resistivity and the equivalent critical breakdown electric field intensity when the soil medium is subjected to secondary breakdown. By considering the actual lightning multi-impact discharge channel structure, the discharge characteristic parameter numerical simulation calculation is performed to obtain the discharge characteristic parameter more consistent with the actual situation, and the lightning electrical parameter detection precision and reliability of the soil are improved.

Description

technical field [0001] The invention belongs to the technical field of detection of grounding characteristics of electric power systems, and in particular relates to a method and system for analyzing characteristic parameters of soil multiple impact discharges. Background technique [0002] The soil medium is the main dispersion medium of the grounding system, and the accuracy of its impulse discharge characteristic parameters directly determines whether the calculation results of the lightning transient model of the grounding system are correct or not. The calculation method of the soil lightning discharge parameters has always been the field of grounding. One of the key research contents. [0003] The characteristic parameters of soil impact discharge mainly include the soil critical breakdown field strength E c and the residual resistivity ρ of the discharge area res . Since the transient parameters in the discharge process are difficult to measure directly, most of th...

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): G01N27/04G01N27/92
CPCG01N27/041G01N27/92Y02A90/30
Inventor 罗东辉曹永兴袁涛司马文霞谢施君张榆张晨萌张波谭波李伟
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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