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1. (WO2018102744) WAVEFORM SEPARATOR APPARATUS AND METHOD FOR DETECTING LEAKAGE CURRENT IN HIGH VOLTAGE DIRECT CURRENT POWER SYSTEMS
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Pub. No.: WO/2018/102744 International Application No.: PCT/US2017/064304
Publication Date: 07.06.2018 International Filing Date: 01.12.2017
IPC:
G01R 31/02 (2006.01) ,G01R 19/00 (2006.01) ,G01R 31/00 (2006.01) ,G01R 31/28 (2006.01)
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
02
Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
19
Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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
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
28
Testing of electronic circuits, e.g. by signal tracer
Applicants:
QUANTA ASSOCIATES, L.P. [US/US]; 2800 Post Oak Blvd., Suite 2600 Houston, TX 77056, US
Inventors:
BILIC, Zoran; CM
BALL, David, James; US
Agent:
OATHOUT, Mark, A.; US
Priority Data:
295050602.12.2016CA
62/429,45902.12.2016US
Title (EN) WAVEFORM SEPARATOR APPARATUS AND METHOD FOR DETECTING LEAKAGE CURRENT IN HIGH VOLTAGE DIRECT CURRENT POWER SYSTEMS
(FR) APPAREIL DE SÉPARATEUR DE FORME D'ONDE ET PROCÉDÉ DE DÉTECTION DE COURANT DE FUITE DANS DES SYSTÈMES D'ALIMENTATION EN COURANT CONTINU À HAUTE TENSION
Abstract:
(EN) A waveform separator system for determining DC leakage current flowing through an insulating structure in a high voltage direct current power system, wherein the DC leakage current is a composite DC current comprising one or more high magnitude momentary spikes, and having a DC component and an AC component includes: (1 ) a waveform separator configured to receive the composite DC current flowing through the insulating structure and to separate the composite DC current into corresponding direct current (DC) and alternating current (AC) components wherein the AC component has a first rate of change, and wherein the DC component has a second rate of change, and wherein the first rate of change is greater than the second rate of change; (2) at least one comparator configured to receive the AC component and produce at least one corresponding digital signal; and (3) a processor configured to: (a) receive the at least one corresponding digital signal and the DC component, (b) analyze the at least one corresponding digital signal and the DC component, and; (c) determine a resultant leakage current flowing through the insulating structure.
(FR) L'invention concerne un système de séparateur de forme d'onde pour déterminer un courant de fuite continu (CC) circulant à travers une structure isolante dans un système d'alimentation en courant continu à haute tension, le courant de fuite CC étant un courant CC composite comprenant une ou plusieurs pointes momentanées de grande amplitude, et ayant une composante CC et une composante alternative (CA), le système de séparateur de forme d'onde comprenant : (1) un séparateur de forme d'onde configuré pour recevoir le courant CC composite circulant à travers la structure isolante et pour séparer le courant CC composite en composantes de courant continu (CC) et de courant alternatif (CA) correspondantes, la composante CA ayant un premier taux de variation, et la composante CC ayant un second taux de variation, et le premier taux de variation étant supérieur au second taux de variation ; (2) au moins un comparateur configuré pour recevoir la composante CA et produire au moins un signal numérique correspondant ; et (3) un processeur configuré pour : (a) recevoir l'au moins un signal numérique correspondant et la composante CC, (b) analyser l'au moins un signal numérique correspondant et la composante CC, et (c) déterminer un courant de fuite résultant circulant à travers la structure isolante.
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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)