A system and method for multi-directional monitoring of impingement dispersion
A monitoring system, multi-directional technology, applied in the direction of using digital measurement technology for measurement, etc., can solve the problems of casualties, complicated operation process, low measurement efficiency, etc., and achieve the effect of convenient layout and convenient operation
Active Publication Date: 2019-05-03
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
If there is physical contact with the object being hit, there will also be a potential difference between the contact point and the standing point, which may also cause casualties
[0003] At present, in the research on the characteristics of the grounding device impact dissipation, usually only the ground dissipation in one direction can be measured, and the measurement of the current in other directions needs to change the position of the sensor, the operation process is complicated, and the measurement efficiency is low. inconvenient
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[0025] The purpose of the present invention is to provide a multi-directional monitoring system for shock and scattered flow, which includes a power frequency power supply module, a surge current generation module, copper rod electrodes, grounding grids, flat copper ground wires, insulated overhead wires, a host computer, high-speed data Acquisition module, switchable current sensing unit, and three-way current acquisition module are a complete experimental system, which is convenient and efficient, and can be used for experimental analysis. At the same time, the present invention provides a calculation method of subterranean impact dispersion attached to the developed system.
[0026] In order to enable those who use the device to better understand the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] Please refer to figure 1 , figure 2 and image 3 , figure 1 It is a circuit diagram of an e...
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The invention discloses a multi-direction monitoring system and method of impact current dispersal. The output end of an impact current generation module is connected to the ground network, the backflow end is connected with a flat copper ground wire and a copper rod electrode, and the flat copper ground wire is welded and fixed to the copper rod electrode; the ground network, the copper rod electrode and the flat copper ground wire are buried to the ground; a tri-directional current collection module is buried to the ground, and is connected to the input end of a high-speed data collection module via an opening / closing current induction unit; and the high-speed data collection module is connected with a host computer via a signal cable. The complete monitoring system is composed of power-frequency power supply module, the impact current generation module and a measuring module; the tri-directional current collection module has no requirements for disposing position and direction and is convenient to arrange, currents in three direction in the ground are monitored at the same time, and the accuracy is higher.
Description
technical field [0001] The invention relates to a multi-directional monitoring system for ground impact and dispersion when a power transmission tower is struck by lightning. The invention also relates to a calculation method for subterranean dispersion applied to the device. Background technique [0002] When the lightning current enters the ground, because the ground has a certain resistivity, a certain potential will appear at the place where the current enters and where the current flows. The ground surface near the lightning strike point will show a certain potential distribution. If there is a person or animal near the lightning strike point at this time, the potential difference between the two points will act on the human or animal due to standing or walking at two different points on the ground surface. , may cause injury or death. If there is physical contact with the object being hit, there will also be a potential difference between the contact point and the st...
Claims
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IPC IPC(8): G01R19/25
CPCG01R19/25
Inventor 蔡君懿周利军唐浩龙何健王朋成郭蕾梅诚徐晗王路伽
Owner SOUTHWEST JIAOTONG UNIV