79851 20200716101512.0 doi 10.3390/en12173293 sideral 112736 ART-2019-112736 eng (orcid)0000-0002-7008-7610 Martín Arroyo, Susana Universidad de Zaragoza The half-sine method: a new accurate location method based on wavelet transform for transmission-line protection from single-ended measurements 2019 Access copy available to the general public Unrestricted In this work, a new and accurate method based on the wavelet transform is proposed for fault location in transmission-line systems. The proposed wavelet method consists of the analysis of the transient signal measured at a single end of the transmission line. Aerial current modes are used, and zero modes are included in the fault-detection scheme for low fault-inception angles. The fault distance is evaluated using the wavelet modulus maxima technique and a method based on the response to a half-sine voltage is proposed to overcome drawbacks arising from the limited sampling frequency and low fault-inception angle. The fault distance is calculated using the difference between the time when a 100 kHz half-sine signal is sent and the time when the derivative signal is received. The proposed algorithm is tested considering harmonic distortion and varying fault resistance, ground resistivity, location and inception angle. The high accuracy of the proposed algorithm is obtained even for faults close to the bus and low inception angles info:eu-repo/grantAgreement/ES/MINECO/RTC-2016-5234-3 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.702 2019 ENERGY & FUELS 63 / 112 = 0.562 2019 Q3 T2 0.635 2019 Control and Optimization 2019 Q2 Electrical and Electronic Engineering 2019 Q2 Renewable Energy, Sustainability and the Environment 2019 Q2 Energy Engineering and Power Technology 2019 Q2 Fuel Technology 2019 Q2 Energy (miscellaneous) 2019 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0002-5727-5705 García-Gracia, Miguel Universidad de Zaragoza (orcid)0000-0001-5957-7013 Montañés, Antonio Universidad de Zaragoza 5009 535 Universidad de Zaragoza Dpto. Ingeniería Eléctrica Área Ingeniería Eléctrica 12, 17 (2019), 12173293 [15 p] ENERGIES Energies 1996-1073 5288564 http://zaguan.unizar.es/record/79851/files/texto_completo.pdf Versión publicada 100940 http://zaguan.unizar.es/record/79851/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:79851 articulos driver 2020-07-16-09:19:58 ARTICLE