| 引用本文: | 朱鸿章,吴传平,周 洋,等.多因素影响下动物体的直流触电电流响应特性分析[J].电力系统保护与控制,2025,53(12):33-44.[点击复制] |
| ZHU Hongzhang,WU Chuanping,ZHOU Yang,et al.Analysis of DC electric shock current response characteristics in animals under multiple influence factors[J].Power System Protection and Control,2025,53(12):33-44[点击复制] |
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| 多因素影响下动物体的直流触电电流响应特性分析 |
| 朱鸿章1,2,吴传平2,3,周洋2,廖秀晶4,周天念2,3,李健4,陈可4 |
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| (1.湖南防灾科技有限公司，湖南 长沙 410129;2.长沙理工大学电网防灾减灾全国重点实验室，
湖南 长沙 410129;3.国网湖南省电力有限公司防灾减灾中心，湖南 长沙 410129;
4.国网湖南省电力有限公司衡阳供电分公司，湖南 衡阳 421600) |
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| 摘要: |
| 针对直流触电电流响应特性尚不明晰的问题，剖析了多因素下动物体直流触电电流的幅值、峰值上升时间、滑动斜率的时域响应特性，同时提出了一种变分模态与奇异值分解(variational mode decomposition and singular value decomposition, VMD-SVD)的直流触电电流时频响应特性分析方法。首先通过对不同触电方式、触电电压、皮肤表面干湿度、触电路径和动物体质量工况下的活体猪直流触电电流幅值、滑动斜率、峰值上升时间时频响应特性进行分析，揭示了触电电流响应特征与多因素之间的变化规律。同时定量地分析了各因素对活体猪直流触电电流特性的影响，揭示了动物体质量和直流触电电压与电流幅值间的定量关系。最后采用VMD-SVD分析了多因素下触电前/后的活体猪直流触电电流时频响应特性，揭示了触电前/后最大奇异值和奇异熵特征量存在明显差异，且多因素影响下最大奇异值和奇异熵特征量差异＜10%。 |
| 关键词: 多因素 直流触电电流 响应特性 滑动斜率 变分模态与奇异值分解 |
| DOI：10.19783/j.cnki.pspc.241100 |
| 投稿时间：2024-08-19修订日期：2025-01-13 |
| 基金项目:国家自然科学基金项目资助(52404196) |
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| Analysis of DC electric shock current response characteristics in animals under multiple influence factors |
| ZHU Hongzhang1,2,WU Chuanping2,3,ZHOU Yang2,LIAO Xiujing4,ZHOU Tiannian2,3,LI Jian4,CHEN Ke4 |
| (1. Hunan Disaster Prevention Technology Co., Ltd., Changsha 410129, China; 2. State Key Laboratory of Disaster Prevention &
Reduction for Power Grid, Changsha University of Science and Technology, Changsha 410129, China; 3. Disaster Prevention
and Reduction Center of State Grid Hunan Electric Power Co., Ltd., Changsha 410129, China; 4. Hengyang
Power Supply Branch, State Grid Hunan Electric Power Co, Ltd., Hengyang 421600, China) |
| Abstract: |
| To address the unclear characteristics of current response under DC electric shock, this paper analyzes the time-domain response characteristics, including current amplitude, peak rise time, and sliding slope of DC electric shock current in animals under multiple factors. A time-frequency response characteristic analysis method based on variational mode decomposition and singular value decomposition (VMD-SVD) is also proposed. First, the DC electric shock current amplitude, sliding slope, and peak rise time in live pigs are analyzed under various conditions, including different electric shock methods, electric shock voltages, skin surface dryness and humidity, current paths, and animal body mass. This reveals the relationship between the electric shock current response characteristics and these multiple factors. At the same time, the influence of various factors on the DC electric shock current characteristics of live pigs is quantitatively analyzed, revealing the quantitative relationship between animal body mass, shock voltage, and current amplitude. Finally, the VMD-SVD method is used to analyze the time-frequency response characteristics of DC electric shock current in living pigs before and after electric shock under multiple factors. The results show significant differences in the maximum singular value and singular entropy characteristics before and after electric shock, although under the influence of multiple factors, these differences remain within 10%. |
| Key words: multiple factors DC electric shock current response characteristics sliding slope variational mode decomposition and singular value decomposition (VMD-SVD) |
