Experimental Study on the Transient Electric Shock Characteristics Between Metal Sheds and the Human Body Near Ultrahigh Voltage Alternating Current Transmission Lines

He, Wangling; Zhang, Yinlu; Liu, Yunpeng; Chen, Qiyu; Xiao, Han; Zhou, Dasen; Wei, Hongyu; Wan, Baoquan

doi:10.1109/temc.2023.3243181

Cited by 8 publications

(3 citation statements)

References 13 publications

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“…Compared with relevant literature on human body model research, there are certain differences in the capacitance values proposed by different researchers, but these variances are approximately concentrated in the range of 100-500 pF [23][24][25]. In this article, referring to the experimental conclusions and recommended values of the MIL-STD-1512 standard human body model [26], the capacitance for human insulation and grounding was selected to be 200 pF and 500 pF, respectively.…”

Section: Human Body Equivalent Circuit Modelmentioning

confidence: 99%

Research on Induced Electrical Characteristics of Agricultural Machinery Operating under Ultra High Voltage AC Transmission Lines in Agricultural Area

Hu,

Zhang,

Zhao

et al. 2024

PIER C

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In plain areas, the majority of the ultra-high voltage (UHV) transmission corridors are located in farmland. The induced voltage is generated on the metal casing of the machinery when agricultural machines are working on the ground near the transmission line. If the human body touches, transient electric shock (TES) may occur, causing displeasure and alarm to workers. Therefore, it is crucial to study the induced electrical characteristics in such scenarios. In this article, the finite element method (FEM) was employed to establish a model integrating a 1000 kV transmission line, tractor, and human body, and the induced voltage of the tractor and human body under the transmission line was calculated. Subsequently, a TES model was developed to calculate the current when an electric shock occurs. Finally, an experimental system was constructed in the area beneath the 1000 kV UHV AC line to measure the current characteristics of the human body during the TES. The results demonstrate that the induced voltage is contingent upon the position of research object and whether it is insulated from the ground. Additionally, ground conditions significantly influence the TES current induced by the voltage. Due to the electromagnetic shielding effect of the tractor's metal casing, the TES current experienced by the driver inside the machine is minimized. For ground staff, when the human body is insulated from the ground, the transient electric shock current they bear is smaller than that of the human body grounded.

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Section: Human Body Equivalent Circuit Modelmentioning

confidence: 99%

Research on Induced Electrical Characteristics of Agricultural Machinery Operating under Ultra High Voltage AC Transmission Lines in Agricultural Area

Hu,

Zhang,

Zhao

et al. 2024

PIER C

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“…Small transient impulses occur as arcs develop over very short distances between the structure and the point of contact on the worker. The amplitude of these impulse currents can be orders of magnitude higher that the steady-state currents, but the duration of the current pulses tend to be less than one microsecond [6][7][8]. The transient currents are concentrated on a small area of the skin due to the small diameter of the arc channel between the skin and the tower.…”

Section: Worker State Descriptionmentioning

confidence: 99%

“…Here, the potential of the high-voltage conductor is set to zero and the potential of the worker is set to an arbitrary voltage V. The worker's charge in this problem can be solved directly using Laplace's equation. Again, insight can be gained by applying (8) to the result. More specifically:…”

Section: Application Of Thevenin's Theorem To the Case Of High-voltag...mentioning

confidence: 99%

Calculation of Transmission Line Worker Electric Field Induced Current Using Fourier-Enhanced Charge Simulation

Leman,

Olsen,

Renew

2023

Energies

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Exposure to quasi-electrostatic field induced currents is a hazard of live-line transmission work. These steady-state induced currents are typically less than 1 mA, and their sensory effects range from imperceptible to painful depending on the person and conditions such as contact area and duration. Permanent injury from these currents is unlikely but they can distract workers, increasing the risk of injury from falls or other dangers. Identifying contact current severity and training workers can help reduce the risk of accidents. Measuring induced currents along a climbing route is time-consuming and simulation is challenging because of the geometric complexity of the worker, the transmission structure, conductor bundles, and electric fields in the climbing space. This research explores the suitability of a recently published adaptation of the charge simulation method for calculating worker-induced currents. The method uses Fourier principles to improve computational efficiency while explicitly modeling all bundle subconductors. The research also examines simplifications for modeling lattice structures and human geometry. Calculated currents compare well to measurements for a worker climbing a 400 kV lattice structure. This indicates the method is a practical option for calculating steady-state contact current severity. A simple calculation is suggested for estimating these currents.

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Research on the Current Distribution of Transient Electric Shock Based on Numerical Bionic Model

Yang,

Xu,

Wang

et al. 2024

Lecture Notes in Electrical Engineering

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Experimental Study on the Transient Electric Shock Characteristics Between Metal Sheds and the Human Body Near Ultrahigh Voltage Alternating Current Transmission Lines

Cited by 8 publications

References 13 publications

Research on Induced Electrical Characteristics of Agricultural Machinery Operating under Ultra High Voltage AC Transmission Lines in Agricultural Area

Research on Induced Electrical Characteristics of Agricultural Machinery Operating under Ultra High Voltage AC Transmission Lines in Agricultural Area

Calculation of Transmission Line Worker Electric Field Induced Current Using Fourier-Enhanced Charge Simulation

Research on the Current Distribution of Transient Electric Shock Based on Numerical Bionic Model

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