Transient Harmonic Voltage based Protection Scheme for Multi-terminal HVDC Transmission Networks
| Autor: | Mazhar Hussain Baloch, Muhammad Haroon Nadeem, Yangyang He, Moduo Yu, Xiaodong Zheng, Nengling Tai |
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| Rok vydání: | 2019 |
| Předmět: |
Computer science
020206 networking & telecommunications High voltage Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Fault (power engineering) Fault detection and isolation Discrete Fourier transform Harmonics 0202 electrical engineering electronic engineering information engineering Harmonic Electronic engineering 020201 artificial intelligence & image processing Transient (oscillation) Voltage |
| Zdroj: | ICIT |
| Popis: | DC faults originate uncertainty in the progression of multi-terminal high voltage dc (MTDC). The fault current makes a rapid, sharp peak, but isolation of the entire network is not a viable solution under a specific fault circumstance. Rapid detection of a fault with high accuracy is essential for the reliability of the entire network. This paper proposes a fault detection scheme to sieve voltage harmonics from system voltage by using Discrete Fourier transform (DFT). Voltage harmonics rapidly employed the fault detection at the converter stations for MTDC networks without communication. The proposed scheme is also capable of classifying internal and external fault by counting the 12th harmonic pulse count. The simulations are executed in PSCAD for four terminal MTDC transmission network to vindicate the performance of the proposed scheme. Comprehensive analysis of test results verified that the proposed scheme, in addition to rapid and precise fault detection, can also efficiently classify the nature of faults. Moreover, consequences proved its promising performance for numerous MTDC faults. |
| Databáze: | OpenAIRE |
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