Protection of transmission lines in multi-terminal HVDC grids using travelling waves morphological gradient
| Autor: | Seyed Sattar Mirhosseini, Sadegh Jamali |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
business.industry
Computer science 020209 energy 020208 electrical & electronic engineering Electrical engineering Energy Engineering and Power Technology Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Fault (power engineering) Inductor Electric power transmission 0202 electrical engineering electronic engineering information engineering Waveform Voltage source Electrical and Electronic Engineering business Circuit breaker Voltage drop Voltage |
| Zdroj: | International Journal of Electrical Power & Energy Systems. 108:125-134 |
| ISSN: | 0142-0615 |
| Popis: | This paper presents a new method for the protection of transmission lines in voltage source converter based multi-terminal HVDC grids. The fault generated travelling waves at the faulted line ends are filtered by series inductors. The filtered voltage waveform processed by morphological gradient accompanied by fault voltage drop is employed for fast single-end protection of HVDC lines. The proposed method is stable against external DC and AC faults, as well as faults at opposite pole and the breaker opening transients from the adjacent lines. Moreover, it does not require communications between the line ends, it is capable to detect and discriminate relatively high resistance faults, and uses relatively low sampling rate. The effectiveness of the proposed protection method is validated by simulation study on a four-terminal HVDC grid including modular multilevel voltage source converters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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