Grounding grid soil risk assessment method considering moisture content
A grounding grid and risky technology, applied in soil material testing, material resistance, material inspection products, etc., can solve problems such as secondary equipment insulation damage, normal leakage of grounding grids, lack of risk assessment, etc.
Active Publication Date: 2022-03-08
SOUTHWEST JIAOTONG UNIV
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Grounding is inseparable from soil. At present, the research on the performance of grounding grid body is the focus of domestic and foreign scholars. There is a lack of research on the risk impact of grounding grid soil with different moisture content, and there is also a lack of related risk assessment techniques.
In nature, there are various geological environments, and the soil moisture content affects the normal discharge of the grounding grid, which may lead to an abnormal increase in the potential of the grounding grid, causing serious damage such as secondary equipment insulation damage
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0025] Depend on figure 1 It can be seen that the experimental platform and method provided by the present invention comprise the steps:
[0026] The first step is to build a grounding grid soil risk testing platform, which includes a DC generator (1), a DC generator controller (2), a DC generator grounding module (3), a first high-voltage cable (4), Current sensing device (5), grounding net external connection port (7), numerical value acquisition module (8), first moisture sensor (9), second moisture sensor (10), soil test box (11), grounding grid ( 12), core control device (13), test box grounding module (33);
[0027] The grounding module (3) of the said DC generating device and the grounding module (33) of the test box are all reliably grounded;
[0028] The upper end of the DC generating device (1) is electrically connected to the left end of the fir...
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
Login to View More Abstract
The invention discloses a grounding grid soil risk assessment method considering moisture content. A test platform in the grounding grid soil risk assessment method considering the moisture content mainly comprises a direct current generating device, a direct current generating device controller, a direct current generating device grounding module, a current sensing device, a grounding grid external leading-out port, a numerical value acquisition module, a moisture sensor, a soil test box, a core control device and the like. The comprehensive evaluation factor of the soil risk of the grounding grid is obtained by measuring the soil moisture content and the direct current response of each section of the grounding grid, so that the comprehensive evaluation factor of the soil risk of the grounding grid based on the moisture content can be effectively obtained, and the evaluation research of the grounding soil risk is carried out; and therefore, the grounding stability can be better improved, and the safe operation of secondary equipment can be ensured.
Description
technical field [0001] The invention belongs to the technical field of electric power system grounding, and in particular relates to a grounding grid soil risk assessment method considering moisture content. Background technique [0002] Power system grounding technology is an important effective measure to ensure the safety of electrical equipment and personal safety in large power grids. It provides a channel for fault current or lightning to flow through, mainly through grounding devices or grounding systems. The research on power system grounding technology is important for future new power The construction and operation of the system play an irreplaceable role. Grounding is inseparable from soil. At present, the research on the performance of grounding grid itself is the focus of domestic and foreign scholars. There is a lack of research on the risk impact of grounding grid soil with different moisture content, and there is also a lack of related risk assessment techniq...
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
Login to View More IPC IPC(8): G01N33/24G01N27/04
CPCG01N33/24G01N27/04
Inventor 张栋陈伟刘聪周利军
Owner SOUTHWEST JIAOTONG UNIV