Distance protection method applicable to renewable energy grid-connected systems
To further improve the performance of distance protection in renewable energy systems, a distance protection method is proposed, which considers the effects of control system and the distributed capacitance effect of the line. When an asymmetric fault occurs in the system, combined with the control...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Power Engineering Technology
2023-05-01
|
| Series: | 电力工程技术 |
| Subjects: | |
| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/220513683 |
| _version_ | 1797820038343819264 |
|---|---|
| author | GUI Xiaozhi SONG Guobing CHANG Peng CHANG Zhongxue |
| author_facet | GUI Xiaozhi SONG Guobing CHANG Peng CHANG Zhongxue |
| author_sort | GUI Xiaozhi |
| collection | DOAJ |
| description | To further improve the performance of distance protection in renewable energy systems, a distance protection method is proposed, which considers the effects of control system and the distributed capacitance effect of the line. When an asymmetric fault occurs in the system, combined with the control characteristics of the converter, the sequence impedance characteristics of the grid and the pure resistive feature of the fault resistance, three unknowns in the fault loop equation can be eliminated, and the solution of the fault distance can be solved in the R-L model. Then, the setting point is set based on the calculation results in the R-L model, and the real electrical quantity at the setting point can be deduced by the calculation formula in Bergeron model. Finally, the equation from the setting point to the fault point is simultaneously solved to reduce the distributed capacitance effect on the distance protection. The simulation results testify that the method is less influenced by the fault features of the converter and fault resistance. It still has good performance in long line. |
| first_indexed | 2024-03-13T09:31:31Z |
| format | Article |
| id | doaj.art-7c71a50c8a264573b883a0c6fff7bd1d |
| institution | Directory Open Access Journal |
| issn | 2096-3203 |
| language | zho |
| last_indexed | 2024-03-13T09:31:31Z |
| publishDate | 2023-05-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj.art-7c71a50c8a264573b883a0c6fff7bd1d2023-05-26T00:26:41ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032023-05-0142325025710.12158/j.2096-3203.2023.03.028220513683Distance protection method applicable to renewable energy grid-connected systemsGUI Xiaozhi0SONG Guobing1CHANG Peng2CHANG Zhongxue3Research Institute of State Grid Jiangxi Electric Power Co., Ltd., Nanchang 330096, ChinaState Key Laboratory of Electrical Insulation of Power Equipment (Xi′an Jiaotong University), Xi′an 710049, ChinaState Key Laboratory of Electrical Insulation of Power Equipment (Xi′an Jiaotong University), Xi′an 710049, ChinaState Key Laboratory of Electrical Insulation of Power Equipment (Xi′an Jiaotong University), Xi′an 710049, ChinaTo further improve the performance of distance protection in renewable energy systems, a distance protection method is proposed, which considers the effects of control system and the distributed capacitance effect of the line. When an asymmetric fault occurs in the system, combined with the control characteristics of the converter, the sequence impedance characteristics of the grid and the pure resistive feature of the fault resistance, three unknowns in the fault loop equation can be eliminated, and the solution of the fault distance can be solved in the R-L model. Then, the setting point is set based on the calculation results in the R-L model, and the real electrical quantity at the setting point can be deduced by the calculation formula in Bergeron model. Finally, the equation from the setting point to the fault point is simultaneously solved to reduce the distributed capacitance effect on the distance protection. The simulation results testify that the method is less influenced by the fault features of the converter and fault resistance. It still has good performance in long line.https://www.epet-info.com/dlgcjsen/article/abstract/220513683renewable energy grid-connected systemdistance protectionadaptive settingcurrent balanced controldistributed parameter modelfault ride through |
| spellingShingle | GUI Xiaozhi SONG Guobing CHANG Peng CHANG Zhongxue Distance protection method applicable to renewable energy grid-connected systems 电力工程技术 renewable energy grid-connected system distance protection adaptive setting current balanced control distributed parameter model fault ride through |
| title | Distance protection method applicable to renewable energy grid-connected systems |
| title_full | Distance protection method applicable to renewable energy grid-connected systems |
| title_fullStr | Distance protection method applicable to renewable energy grid-connected systems |
| title_full_unstemmed | Distance protection method applicable to renewable energy grid-connected systems |
| title_short | Distance protection method applicable to renewable energy grid-connected systems |
| title_sort | distance protection method applicable to renewable energy grid connected systems |
| topic | renewable energy grid-connected system distance protection adaptive setting current balanced control distributed parameter model fault ride through |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/220513683 |
| work_keys_str_mv | AT guixiaozhi distanceprotectionmethodapplicabletorenewableenergygridconnectedsystems AT songguobing distanceprotectionmethodapplicabletorenewableenergygridconnectedsystems AT changpeng distanceprotectionmethodapplicabletorenewableenergygridconnectedsystems AT changzhongxue distanceprotectionmethodapplicabletorenewableenergygridconnectedsystems |