LAPSE:2018.0543
Published Article
LAPSE:2018.0543
Pilot Protection Based on Amplitude of Directional Travelling Wave for Voltage Source Converter-High Voltage Direct Current (VSC-HVDC) Transmission Lines
Lingtong Jiang, Qing Chen, Wudi Huang, Lei Wang, Yu Zeng, Pu Zhao
September 21, 2018
This paper presents a novel pilot protection scheme of DC cable line in voltage-source-converter (VSC) based multi-terminal DC (MTDC) grids, which utilizes a novel phase-mode transformation to decouple the bipolar DC cable current into six mode and it uses the stationary wavelet transform to extract the modulus maxima of fault initial traveling waves current (FITWC). With accurate amplitude and polarities of the FITWC being collected from the fault-detection devices located at each terminal, the proposed scheme can correctly determine the faulty segment and the faulty pole. In this paper, the ratio of amplitudes between sixth mode forward and backward travelling wave currents is used to judge the faulty segment and the polarity of fifth mode forward travelling wave current is used to identify the faulty pole. A four-terminal VSC-based MTDC grid was built in PSCAD/EMTDC to evaluate the performance of the fault-protection scheme. Simulation results for different cases demonstrate that the proposed protection scheme is robust against noise, and has been tested successfully for fault resistance of up to 400 Ω. Since the scheme merely needs the characteristics of FITWCs, the practical difficulties of detecting subsequent travelling waves are avoided. Moreover, only the state signal is needed to send to the other side in proposed scheme, so low communication speed can satisfy the requirement of relay protection and it does not need the data synchronization seriously.
Keywords
directional pilot protection, phase-mode transformation, stationary wavelet transform, time difference, VSC-MTDC
Suggested Citation
Jiang L, Chen Q, Huang W, Wang L, Zeng Y, Zhao P. Pilot Protection Based on Amplitude of Directional Travelling Wave for Voltage Source Converter-High Voltage Direct Current (VSC-HVDC) Transmission Lines. (2018). LAPSE:2018.0543
Author Affiliations
Jiang L: Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, Shandong, China
Chen Q: Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, Shandong, China
Huang W: Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, Shandong, China
Wang L: Weifang Electric Power Company, Weifang 261000, Shandong, China
Zeng Y: Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan 250061, Shandong, China
Zhao P: Jinan Electric Power Company, Jinan 250061, Shandong, China [ORCID]
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Journal Name
Energies
Volume
11
Issue
8
Article Number
E2021
Year
2018
Publication Date
2018-08-03
Published Version
ISSN
1996-1073
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PII: en11082021, Publication Type: Journal Article
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LAPSE:2018.0543
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doi:10.3390/en11082021
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Sep 21, 2018
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Sep 21, 2018
 
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Original Submitter
Calvin Tsay
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