Differential current protection for active distribution networks with dual proportional compensation coefficients
The increasing penetration of distributed generation （DG） in distribution networks has exposed poor adaptation of conventional differential current protection schemes. To address this issue， an analysis of the positive-sequence current components output by various types of DGs during faults is condu...
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| Format: | Article |
| Language: | zho |
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zhejiang electric power
2024-12-01
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| Series: | Zhejiang dianli |
| Subjects: | |
| Online Access: | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=f6f7ce3a-19d8-4d89-9847-c5c078ab3a72 |
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| _version_ | 1846099879782252544 |
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| author | WU Zhenjie HU Chen CHEN Haiyan JIN Kai TANG Aihong WANG Qian MA Wei |
| author_facet | WU Zhenjie HU Chen CHEN Haiyan JIN Kai TANG Aihong WANG Qian MA Wei |
| author_sort | WU Zhenjie |
| collection | DOAJ |
| description | The increasing penetration of distributed generation （DG） in distribution networks has exposed poor adaptation of conventional differential current protection schemes. To address this issue， an analysis of the positive-sequence current components output by various types of DGs during faults is conducted. A differential current protection scheme for active distribution networks with dual proportional compensation coefficients is proposed. The scheme constructs braking coefficients and compensation coefficients for fault current phasors， adjusting the phase and magnitude of the positive-sequence current fault components on both sides. This adjustment helps the positive-sequence current components move more easily into the action region of the amplitude-phase plane during internal faults， while ensuring reliable non-operation during external faults. Finally， the proposed protection scheme’s effectiveness under different fault conditions is tested using a model of an active distribution network established in PSCAD/EMTDC. The simulation results demonstrate that the proposed scheme improves both the sensitivity and reliability of differential current protection. |
| format | Article |
| id | doaj-art-3ef6400a76244536a217ad071f05a5dd |
| institution | Kabale University |
| issn | 1007-1881 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | zhejiang electric power |
| record_format | Article |
| series | Zhejiang dianli |
| spelling | doaj-art-3ef6400a76244536a217ad071f05a5dd2024-12-31T01:11:09Zzhozhejiang electric powerZhejiang dianli1007-18812024-12-01431210411310.19585/j.zjdl.2024120111007-1881（2024）12-0104-10Differential current protection for active distribution networks with dual proportional compensation coefficientsWU Zhenjie0HU Chen1CHEN Haiyan2JIN Kai3TANG Aihong4WANG Qian5MA Wei6State Grid Hangzhou Power Supply Company， Hangzhou 310016， ChinaState Grid Hangzhou Power Supply Company， Hangzhou 310016， ChinaState Grid Hangzhou Power Supply Company， Hangzhou 310016， ChinaState Grid Hangzhou Power Supply Company， Hangzhou 310016， ChinaSchool of Automation， Wuhan University of Technology， Wuhan 430070， ChinaSchool of Automation， Wuhan University of Technology， Wuhan 430070， ChinaState Grid Hangzhou Power Supply Company， Hangzhou 310016， ChinaThe increasing penetration of distributed generation （DG） in distribution networks has exposed poor adaptation of conventional differential current protection schemes. To address this issue， an analysis of the positive-sequence current components output by various types of DGs during faults is conducted. A differential current protection scheme for active distribution networks with dual proportional compensation coefficients is proposed. The scheme constructs braking coefficients and compensation coefficients for fault current phasors， adjusting the phase and magnitude of the positive-sequence current fault components on both sides. This adjustment helps the positive-sequence current components move more easily into the action region of the amplitude-phase plane during internal faults， while ensuring reliable non-operation during external faults. Finally， the proposed protection scheme’s effectiveness under different fault conditions is tested using a model of an active distribution network established in PSCAD/EMTDC. The simulation results demonstrate that the proposed scheme improves both the sensitivity and reliability of differential current protection.https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=f6f7ce3a-19d8-4d89-9847-c5c078ab3a72active distribution networkdgdifferential protectionamplitude-phase relationshipcurrent amplitude ratiocurrent phase differencedual proportional compensation coefficients |
| spellingShingle | WU Zhenjie HU Chen CHEN Haiyan JIN Kai TANG Aihong WANG Qian MA Wei Differential current protection for active distribution networks with dual proportional compensation coefficients Zhejiang dianli active distribution network dg differential protection amplitude-phase relationship current amplitude ratio current phase difference dual proportional compensation coefficients |
| title | Differential current protection for active distribution networks with dual proportional compensation coefficients |
| title_full | Differential current protection for active distribution networks with dual proportional compensation coefficients |
| title_fullStr | Differential current protection for active distribution networks with dual proportional compensation coefficients |
| title_full_unstemmed | Differential current protection for active distribution networks with dual proportional compensation coefficients |
| title_short | Differential current protection for active distribution networks with dual proportional compensation coefficients |
| title_sort | differential current protection for active distribution networks with dual proportional compensation coefficients |
| topic | active distribution network dg differential protection amplitude-phase relationship current amplitude ratio current phase difference dual proportional compensation coefficients |
| url | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=f6f7ce3a-19d8-4d89-9847-c5c078ab3a72 |
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