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1. (WO2019025840) METHOD AND DEVICE FOR FAULT SECTION IDENTIFICATION IN MULTI-TERMINAL MIXED LINES
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Pub. No.: WO/2019/025840 International Application No.: PCT/IB2017/055831
Publication Date: 07.02.2019 International Filing Date: 26.09.2017
IPC:
H02H 3/04 (2006.01) ,G01R 31/08 (2006.01) ,H02H 3/06 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3
Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
02
Details
04
with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31
Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
08
Locating faults in cables, transmission lines, or networks
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3
Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
02
Details
06
with automatic reconnection
Applicants:
ABB SCHWEIZ AG [CH/CH]; Brown Boveri Strasse 6 5400 Baden, CH
Inventors:
NAIDU, Obbalareddi Demudu; IN
GEORGE, Neethu; IN
SRIVASTAVA, Sachin; IN
GAJARE, Swaroop; IN
Priority Data:
20174102782204.08.2017IN
Title (EN) METHOD AND DEVICE FOR FAULT SECTION IDENTIFICATION IN MULTI-TERMINAL MIXED LINES
(FR) PROCÉDÉ ET DISPOSITIF D'IDENTIFICATION DE SECTION DE DÉFAUT DANS DES LIGNES MIXTES À BORNES MULTIPLES
Abstract:
(EN) The invention provides a method and device for fault section identification in a multi-terminal mixed line. The method comprises obtaining positive sequence voltage and current phasors from measurements of voltages and currents at each terminal of the mixed line. The method further comprises calculating a voltage phasor for each terminal, wherein the calculation of the voltage phasor for a first terminal is performed using at least the voltage and current phasors obtained for one of a second terminal and a third terminal, and the current phasor obtained for the first terminal. Thereafter, the method comprises determining a section of the mixed line having the fault, based on comparison of the calculated and obtained voltage phasors for each terminal. In addition, the method comprises controlling a switching device with a re-trip signal generated based on the determination of the section with the fault.
(FR) L'invention concerne un procédé et un dispositif d'identification de section de défaut dans une ligne mixte à bornes multiples. Le procédé consiste à obtenir une tension de séquence positive et des phaseurs de courant à partir de mesures de tensions et de courants au niveau de chaque borne de la ligne mixte. Le procédé consiste en outre à calculer un phaseur de tension pour chaque borne, le calcul du phaseur de tension pour une première borne étant effectué à l'aide au moins des phaseurs de tension et de courant obtenus pour une deuxième borne ou une troisième borne, et du phaseur de courant obtenu pour la première borne. Ensuite, le procédé consiste à déterminer une section de la ligne mixte ayant le défaut, sur la base de la comparaison des phaseurs de tension calculés et obtenus pour chaque borne. De plus, le procédé consiste à commander un dispositif de commutation avec un signal de redéclenchement généré sur la base de la détermination de la section ayant le défaut.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)