Wavelet-based analysis and detection of traveling waves due to DC faults in LCC HVDC systems. (January 2019)

• Record Type: Journal Article
• Authors: Marques da Silva, Daniel; Costa, Flavio B.; Miranda, Vladimiro; Leite, Helder
• Is Part Of: International journal of electrical power & energy systems. Volume 104(2019)
• Page Start: 291
• Page End: 300
• Publication Date: 2019-01
• Subjects: DC fault-induced transients -- Traveling waves -- Wavelet transform -- Fault detection and location -- HVDC systems; Electrical engineering -- Periodicals; Electric power systems -- Periodicals; Électrotechnique -- Périodiques; Réseaux électriques (Énergie) -- Périodiques; Electric power systems; Electrical engineering; Periodicals; 621.3
• DOI: 10.1016/j.ijepes.2018.07.011
• Languages: English
• ISSNs: 0142-0615

Abstract

Highlights: Analysis of the main parameters that affect the DC fault-induced traveling waves. Employment of the boundary wavelet coefficients for the first time at HVDC systems. Algorithm designed to run in real-time and able to deal with factors that affect TWP methods. The proposed method using db(4) boundary wavelet coefficients presented the best performance. Abstract: This paper presents qualitative and quantitative analysis of the traveling waves induced by faults on direct current (DC) transmission lines of line-commutated converter high-voltage direct current (LCC HVDC) systems for detecting the wavefront arrival times using the boundary wavelet coefficients from real-time stationary wavelet transform (RT-SWT). The qualitative analysis takes into account the steady-state operation and the detection of the inception times of both first and second wavefronts at the converter stations. The behavior of the boundary wavelet coefficients in DC transmission lines is examined considering the effects of the main parameters that influence the detection of the traveling waves, such as mother wavelets, sampling frequency, DC transmission line terminations, electrical noises, as well as fault resistance and distance. An algorithm designed to run in real-time and able to minimize the factors that hamper the performance of traveling wave-based protection (TWP) methods is proposed to detect the first and second surge arrival times. Quantitative results are achieved based on the accuracy of one- and two-terminal fault location estimation methods, and indicate the proper operation of the presented algorithm.