High-Speed Protection Scheme Based on Initial Current Traveling Wave for Transmission Lines Employing Mathematical Morphology

2017 ◽  
Vol 32 (1) ◽  
pp. 246-253 ◽  
Author(s):  
F. Namdari ◽  
M. Salehi
Keyword(s):  
Mathematical Morphology ◽  
Transmission Lines ◽  
Traveling Wave ◽  
High Speed ◽  
Initial Current ◽  
Protection Scheme

Traveling Wave Current Polarity Comparison Protection Using Wavelet Modulus Maxima for HVDC Transmission Lines

2011 ◽  
Vol 383-390 ◽  
pp. 5327-5333
Author(s):  
Jian Dong Duan ◽  
Wen Lu ◽  
Lin An
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
Electromagnetic Coupling ◽  
Hvdc Transmission ◽  
Protection Scheme ◽  
High Impedance ◽  
Hvdc Transmission Lines ◽  
High Impedance Faults ◽  
Current Polarity ◽  
Modulus Maxima

ABB and SIEMENS schemes based on the voltage change rate are the existing main protection for HVDC transmission lines. But the analysis and simulation tests show that these protection schemes may be unreliable as high impedance faults or as disturbances of above 2% noisy. The paper presents a new protection scheme of traveling wave current polarity comparison for a bipolar HVDC transmission line. The traveling wave current polarity is represented by the wavelet modulus maxima (WMM) of the fault current traveling wave. The traveling wave current polarity comparison protection scheme is evaluated by PSCAD. The extensive simulation studies show that the proposed scheme is reliable to distinguish internal faults from external faults of HVDC transmission lines. And the protection scheme is immune to high impedance faults and able to accurately detect the fault line under the electromagnetic coupling circumstance.

A Novel Design of Traveling Wave Protection Device in EHV Transmission Lines Based-On ARM and FPGA

2013 ◽  
Vol 313-314 ◽  
pp. 291-295
Author(s):  
Hui Zhong Wang ◽  
Chen Yu Sun
Keyword(s):  
Wavelet Analysis ◽  
Real Time ◽  
Transmission Lines ◽  
Traveling Wave ◽  
High Speed ◽  
Travelling Wave ◽  
Protection Device ◽  
Machine Interface ◽  
Novel Design ◽  
Microcomputer Protection

As it is difficult to realize the traveling wave protection principle based on wavelet analysis in microcomputer protection device, a new microcomputer protection architecture based on FPGA+ARM is put forward in this paper This architecture make full use of ARM to complete relay protection principle, communication and the realization of the man-machine interface for the powerful transaction processing ability, and make use of FPGA to complete complex real-time wavelet analysis by a logic circuit for the characteristics of FPGA in high speed real-time parallel computation. It proves in experiment that this scheme is a good solution for the realization of travelling wave protection.

Ultra-high-speed protection of transmission lines using traveling wave theory

2016 ◽  
Vol 132 ◽  
pp. 94-103 ◽  
Author(s):  
Saeid Hasheminejad ◽  
Seyed Ghodratollah Seifossadat ◽  
Morteza Razaz ◽  
Mahmood Joorabian
Keyword(s):  
Transmission Lines ◽  
Traveling Wave ◽  
High Speed ◽  
Wave Theory ◽  
Ultra High Speed
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