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1. (WO2018122631) A METHOD FOR LOAD SHEDDING DURING BUS TRANSFER AND AN INTELIGENT ELECTRONIC DEVICE THEROF
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Pub. No.: WO/2018/122631 International Application No.: PCT/IB2017/054657
Publication Date: 05.07.2018 International Filing Date: 31.07.2017
IPC:
H02J 3/14 (2006.01) ,H02J 3/42 (2006.01) ,H02J 9/06 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3
Circuit arrangements for ac mains or ac distribution networks
12
for adjusting voltage in ac networks by changing a characteristic of the network load
14
by switching loads on to, or off from, network, e.g. progressively balanced loading
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3
Circuit arrangements for ac mains or ac distribution networks
38
Arrangements for parallelly feeding a single network by two or more generators, converters, or transformers
40
Synchronising a generator for connection to a network or to another generator
42
with automatic parallel connection when synchronism is achieved
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
9
Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
04
in which the distribution system is disconnected from the normal source and connected to a standby source
06
with automatic change-over
Applicants:
ABB SCHWEIZ AG [CH/CH]; Brown Boveri Strasse 6 5400 Baden, CH
Inventors:
GUPTA, Arinjai; IN
M, Ahmed; IN
MAHAMMADPURKAR, Shivangi; IN
Priority Data:
20164104455728.12.2016IN
Title (EN) A METHOD FOR LOAD SHEDDING DURING BUS TRANSFER AND AN INTELIGENT ELECTRONIC DEVICE THEROF
(FR) PROCÉDÉ DE DÉLESTAGE DE CHARGE PENDANT UN TRANSFERT DE BUS ET DISPOSITIF ÉLECTRONIQUE INTELLIGENT ASSOCIÉ
Abstract:
(EN) The present invention relates to a method for load shedding during a bus transfer from a first feeder to a second feeder for powering a load bus connecting a plurality of loads and an Intelligent Electronic Device (IED) thereof. The IED: measures a first voltage magnitude in a first voltage cycle from a load bus; measures a second voltage magnitude in a second voltage cycle from the load bus; determines rate of decay of voltage based on measured first voltage magnitude and second voltage magnitude; predicts a decay in voltage of the load bus based on determined rate of decay of voltage; and operates a switching device for load shedding of a load from the plurality of loads connected in the load bus based on the predicted decay in voltage of the load bus during the bus transfer from a first feeder to a second feeder.
(FR) La présente invention concerne un procédé de délestage de charge pendant un transfert de bus d'un premier dispositif d'alimentation à un second dispositif d'alimentation pour alimenter un bus de charge qui connecte une pluralité de charges et un dispositif électronique intelligent (IED) associé. L'IED : mesure une première amplitude de tension dans un premier cycle de tension à partir d'un bus de charge ; mesure une seconde amplitude de tension dans un second cycle de tension à partir du bus de charge ; détermine un taux de déclin de tension sur la base de la première amplitude de tension et de la seconde amplitude de tension mesurées ; prédit un déclin de tension du bus de charge sur la base d'un taux déterminé de déclin de tension ; et actionne un dispositif de commutation pour le délestage de charge d'une charge à partir de la pluralité de charges connectées dans le bus de charge sur la base du déclin prédit de la tension du bus de charge pendant le transfert de bus d'un premier dispositif d'alimentation à un second dispositif d'alimentation.
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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)