Study on the Propagation Characteristics of Partial Discharge in Switchgear Based on Near-Field to Far-Field Transformation
Ultra-high frequency (UHF) electromagnetic (EM) signals generated by the partial discharge (PD) process of high-voltage equipment are now widely used in PD detection. The computation of EM propagation generated by a local discharge source using a uniformly hardwiring source can hardly reveal the dis...
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| Format: | Article |
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MDPI AG
2018-06-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/7/1619 |
| _version_ | 1798025482419044352 |
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| author | Yang Qi Yang Fan Bing Gao Yang Mengzhuo Ammad Jadoon Yu Peng Tian Jie |
| author_facet | Yang Qi Yang Fan Bing Gao Yang Mengzhuo Ammad Jadoon Yu Peng Tian Jie |
| author_sort | Yang Qi |
| collection | DOAJ |
| description | Ultra-high frequency (UHF) electromagnetic (EM) signals generated by the partial discharge (PD) process of high-voltage equipment are now widely used in PD detection. The computation of EM propagation generated by a local discharge source using a uniformly hardwiring source can hardly reveal the discharge characteristics. In this paper, a method of near-field to far-field transformation is proposed to realize the study of the propagation characteristics of the PD signal. A short gap discharge model is established to get the near-field electromagnetics and the proposed method is validated by comparing the directly calculated results with the results of the near-field source. In the end, a model of switchgear is employed to study the propagation characteristics of the EM signal based on the proposed method. Via numerical calculation, the influence of the equipment in the switchgear on the propagation of the discharge EM is studied. It is found that the direction of the discharge source has a significant effect on the distribution of the electric field, which indicates that the discharge source cannot be simplified to a uniformly hardwiring source. In addition, it is also obtained that the amplitude of the electric field shows the same trend with the growth of the discharge channel, which gives a method for evaluating the development of the PD. Particularly, the near-field to far-field transformation can provide an effective method for studying the propagation of discharge EM waves in large-scale equipment. |
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| format | Article |
| id | doaj.art-2ca8e4c41e604705ae87cc634c1a3269 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T18:20:42Z |
| publishDate | 2018-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-2ca8e4c41e604705ae87cc634c1a32692022-12-22T04:09:47ZengMDPI AGEnergies1996-10732018-06-01117161910.3390/en11071619en11071619Study on the Propagation Characteristics of Partial Discharge in Switchgear Based on Near-Field to Far-Field TransformationYang Qi0Yang Fan1Bing Gao2Yang Mengzhuo3Ammad Jadoon4Yu Peng5Tian Jie6State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, ChinaDepartment of Electrical and Computer Engineering, University of Connecticut, Storrs, CT 06269-4157, USAState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, ChinaShenzhen Power Supply Bureau Co., Ltd., Shenzhen 518000, ChinaShenzhen Power Supply Bureau Co., Ltd., Shenzhen 518000, ChinaUltra-high frequency (UHF) electromagnetic (EM) signals generated by the partial discharge (PD) process of high-voltage equipment are now widely used in PD detection. The computation of EM propagation generated by a local discharge source using a uniformly hardwiring source can hardly reveal the discharge characteristics. In this paper, a method of near-field to far-field transformation is proposed to realize the study of the propagation characteristics of the PD signal. A short gap discharge model is established to get the near-field electromagnetics and the proposed method is validated by comparing the directly calculated results with the results of the near-field source. In the end, a model of switchgear is employed to study the propagation characteristics of the EM signal based on the proposed method. Via numerical calculation, the influence of the equipment in the switchgear on the propagation of the discharge EM is studied. It is found that the direction of the discharge source has a significant effect on the distribution of the electric field, which indicates that the discharge source cannot be simplified to a uniformly hardwiring source. In addition, it is also obtained that the amplitude of the electric field shows the same trend with the growth of the discharge channel, which gives a method for evaluating the development of the PD. Particularly, the near-field to far-field transformation can provide an effective method for studying the propagation of discharge EM waves in large-scale equipment.http://www.mdpi.com/1996-1073/11/7/1619partial dischargenear-fieldfar-fieldHuygens’ surfacepropagation characteristics |
| spellingShingle | Yang Qi Yang Fan Bing Gao Yang Mengzhuo Ammad Jadoon Yu Peng Tian Jie Study on the Propagation Characteristics of Partial Discharge in Switchgear Based on Near-Field to Far-Field Transformation Energies partial discharge near-field far-field Huygens’ surface propagation characteristics |
| title | Study on the Propagation Characteristics of Partial Discharge in Switchgear Based on Near-Field to Far-Field Transformation |
| title_full | Study on the Propagation Characteristics of Partial Discharge in Switchgear Based on Near-Field to Far-Field Transformation |
| title_fullStr | Study on the Propagation Characteristics of Partial Discharge in Switchgear Based on Near-Field to Far-Field Transformation |
| title_full_unstemmed | Study on the Propagation Characteristics of Partial Discharge in Switchgear Based on Near-Field to Far-Field Transformation |
| title_short | Study on the Propagation Characteristics of Partial Discharge in Switchgear Based on Near-Field to Far-Field Transformation |
| title_sort | study on the propagation characteristics of partial discharge in switchgear based on near field to far field transformation |
| topic | partial discharge near-field far-field Huygens’ surface propagation characteristics |
| url | http://www.mdpi.com/1996-1073/11/7/1619 |
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