FEM Analysis and Sensor-Based Measurement Scheme of Current Distribution for Grounding Electrode
The current distribution of the grounding electrode in a high-voltage direct current (HVDC) transmission system affects the state of power equipment in its vicinity, which depends on the soil resistivity and shape of the grounding electrode. In this paper, current distribution in the vicinity of an...
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| Format: | Article |
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MDPI AG
2020-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/22/8151 |
| _version_ | 1797547630510735360 |
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| author | Li Zhu Hui Jiang Fan Yang Hanwu Luo Wenzhen Li Jianjun Han |
| author_facet | Li Zhu Hui Jiang Fan Yang Hanwu Luo Wenzhen Li Jianjun Han |
| author_sort | Li Zhu |
| collection | DOAJ |
| description | The current distribution of the grounding electrode in a high-voltage direct current (HVDC) transmission system affects the state of power equipment in its vicinity, which depends on the soil resistivity and shape of the grounding electrode. In this paper, current distribution in the vicinity of an ±800 kV grounding electrode is investigated by simulation and experiments. Firstly, the model to calculate the current distribution with two typical frozen soils is set up, and simulation models and experimental platforms are established; meanwhile, the finite element method (FEM) is used to calculate the current and potential dispersion of linear, cross-shaped, and ring-shaped grounding electrodes in the simulation models. After obtaining the lab current data from the simulation, an innovative method based on a “drainage wire” with a Hall sensor is proposed to measure the current in an experimental setup. The results show that current and potential distribution characteristics are related to the shape of the grounding electrode and soil resistivity. Meanwhile, the current measurement scheme can measure the current in soil with a lower error. This article concludes that these two typical models can reduce the complexity of frozen soil analysis, and the measurement scheme can accurately monitor the current to reduce the damage to the surrounding power equipment. |
| first_indexed | 2024-03-10T14:46:48Z |
| format | Article |
| id | doaj.art-75bdde20e26b46a19de00855e92e5308 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T14:46:48Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-75bdde20e26b46a19de00855e92e53082023-11-20T21:19:59ZengMDPI AGApplied Sciences2076-34172020-11-011022815110.3390/app10228151FEM Analysis and Sensor-Based Measurement Scheme of Current Distribution for Grounding ElectrodeLi Zhu0Hui Jiang1Fan Yang2Hanwu Luo3Wenzhen Li4Jianjun Han5State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Grid East Inner Mongolia Electric Power Maintenance Company, Tongliao 028000, ChinaState Grid East Inner Mongolia Electric Power Maintenance Company, Tongliao 028000, ChinaState Grid East Inner Mongolia Electric Power Maintenance Company, Tongliao 028000, ChinaThe current distribution of the grounding electrode in a high-voltage direct current (HVDC) transmission system affects the state of power equipment in its vicinity, which depends on the soil resistivity and shape of the grounding electrode. In this paper, current distribution in the vicinity of an ±800 kV grounding electrode is investigated by simulation and experiments. Firstly, the model to calculate the current distribution with two typical frozen soils is set up, and simulation models and experimental platforms are established; meanwhile, the finite element method (FEM) is used to calculate the current and potential dispersion of linear, cross-shaped, and ring-shaped grounding electrodes in the simulation models. After obtaining the lab current data from the simulation, an innovative method based on a “drainage wire” with a Hall sensor is proposed to measure the current in an experimental setup. The results show that current and potential distribution characteristics are related to the shape of the grounding electrode and soil resistivity. Meanwhile, the current measurement scheme can measure the current in soil with a lower error. This article concludes that these two typical models can reduce the complexity of frozen soil analysis, and the measurement scheme can accurately monitor the current to reduce the damage to the surrounding power equipment.https://www.mdpi.com/2076-3417/10/22/8151HVDC transmissioncurrent dispersiongrounding electrodecurrent measurement |
| spellingShingle | Li Zhu Hui Jiang Fan Yang Hanwu Luo Wenzhen Li Jianjun Han FEM Analysis and Sensor-Based Measurement Scheme of Current Distribution for Grounding Electrode Applied Sciences HVDC transmission current dispersion grounding electrode current measurement |
| title | FEM Analysis and Sensor-Based Measurement Scheme of Current Distribution for Grounding Electrode |
| title_full | FEM Analysis and Sensor-Based Measurement Scheme of Current Distribution for Grounding Electrode |
| title_fullStr | FEM Analysis and Sensor-Based Measurement Scheme of Current Distribution for Grounding Electrode |
| title_full_unstemmed | FEM Analysis and Sensor-Based Measurement Scheme of Current Distribution for Grounding Electrode |
| title_short | FEM Analysis and Sensor-Based Measurement Scheme of Current Distribution for Grounding Electrode |
| title_sort | fem analysis and sensor based measurement scheme of current distribution for grounding electrode |
| topic | HVDC transmission current dispersion grounding electrode current measurement |
| url | https://www.mdpi.com/2076-3417/10/22/8151 |
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