A novel pilot protection method for UHVDC transmission lines based on U-I characteristics
As one of the principal protections of UHVDC transmission lines, pilot protection requires strict synchronization and small data flow by exchanging the current on both terminals under the limitation of DC protection action rapidity. To solve this problem, this paper finds that the DC voltage and cur...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484723005255 |
| _version_ | 1797692016678666240 |
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| author | Hong Tan Yuwei Wang Zhenxing Li Mohamed A. Mohamed Qiujie Wang |
| author_facet | Hong Tan Yuwei Wang Zhenxing Li Mohamed A. Mohamed Qiujie Wang |
| author_sort | Hong Tan |
| collection | DOAJ |
| description | As one of the principal protections of UHVDC transmission lines, pilot protection requires strict synchronization and small data flow by exchanging the current on both terminals under the limitation of DC protection action rapidity. To solve this problem, this paper finds that the DC voltage and current on both terminals of the line have different plane distribution characteristics when faults occur internally and externally in the system area, and then advances a novel pilot protection method for UHVDC transmission lines based on U-I characteristics. By setting up the U-I plane with DC voltage and current as variables, analyzing the dynamic trajectory of the real-time captured U-I plane, constructing protection criteria based on the U-I plane on the rectifier side and inverter side separately, and finally converting the judgment results into state information. Both terminals of the line identify the fault location by exchanging the longitudinal comparison of state information. This protection project only utilizes the instant tracks of voltage and current in the rectifier side and inverter side at the time of fault to judge. The principle is simple and can quickly locate faults. The state messages of the two terminals are not modified by the data asynchrony on both terminals. This protection method is convenient for setting, has high sensitivity, and can quickly identify interior and exterior faults. The results are testified by theoretical analysis and simulation verification. |
| first_indexed | 2024-03-12T02:21:34Z |
| format | Article |
| id | doaj.art-cc009174a58c452b8f24d05785a0f5fe |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-03-12T02:21:34Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-cc009174a58c452b8f24d05785a0f5fe2023-09-06T04:51:59ZengElsevierEnergy Reports2352-48472023-09-01918501860A novel pilot protection method for UHVDC transmission lines based on U-I characteristicsHong Tan0Yuwei Wang1Zhenxing Li2Mohamed A. Mohamed3Qiujie Wang4College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China; Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station, China Three Gorges University, Yichang 443002, ChinaCollege of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, ChinaCollege of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China; Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station, China Three Gorges University, Yichang 443002, China; Corresponding author at: College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China.Electrical Engineering Department, Faculty of Engineering, Minia University, Minia 61519, EgyptCollege of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China; Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station, China Three Gorges University, Yichang 443002, ChinaAs one of the principal protections of UHVDC transmission lines, pilot protection requires strict synchronization and small data flow by exchanging the current on both terminals under the limitation of DC protection action rapidity. To solve this problem, this paper finds that the DC voltage and current on both terminals of the line have different plane distribution characteristics when faults occur internally and externally in the system area, and then advances a novel pilot protection method for UHVDC transmission lines based on U-I characteristics. By setting up the U-I plane with DC voltage and current as variables, analyzing the dynamic trajectory of the real-time captured U-I plane, constructing protection criteria based on the U-I plane on the rectifier side and inverter side separately, and finally converting the judgment results into state information. Both terminals of the line identify the fault location by exchanging the longitudinal comparison of state information. This protection project only utilizes the instant tracks of voltage and current in the rectifier side and inverter side at the time of fault to judge. The principle is simple and can quickly locate faults. The state messages of the two terminals are not modified by the data asynchrony on both terminals. This protection method is convenient for setting, has high sensitivity, and can quickly identify interior and exterior faults. The results are testified by theoretical analysis and simulation verification.http://www.sciencedirect.com/science/article/pii/S2352484723005255UHVDC transmissionPilot protectionU-I characteristicsDirection comparison protection |
| spellingShingle | Hong Tan Yuwei Wang Zhenxing Li Mohamed A. Mohamed Qiujie Wang A novel pilot protection method for UHVDC transmission lines based on U-I characteristics Energy Reports UHVDC transmission Pilot protection U-I characteristics Direction comparison protection |
| title | A novel pilot protection method for UHVDC transmission lines based on U-I characteristics |
| title_full | A novel pilot protection method for UHVDC transmission lines based on U-I characteristics |
| title_fullStr | A novel pilot protection method for UHVDC transmission lines based on U-I characteristics |
| title_full_unstemmed | A novel pilot protection method for UHVDC transmission lines based on U-I characteristics |
| title_short | A novel pilot protection method for UHVDC transmission lines based on U-I characteristics |
| title_sort | novel pilot protection method for uhvdc transmission lines based on u i characteristics |
| topic | UHVDC transmission Pilot protection U-I characteristics Direction comparison protection |
| url | http://www.sciencedirect.com/science/article/pii/S2352484723005255 |
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