SG11201903258WA - A dc power system segregated into different protection zones - Google Patents

Abstract

b10 1 , 0 A C/a 5 \ 5 \ 1 1 \- Z2 13 F 15 Fig. 1 SC+ 00 O 00 O N (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 17 May 2018 (17.05.2018) WIPO I PCT Iiiimmomiolollmonolooluoionoiliommovom (10) International Publication Number WO 2018/086927 Al (51) International Patent Classification: HO2H 3/05 (2006.01) HO2H 7/26 (2006.01) B63H 23/24 (2006.01) H02H 9/02 (2006.01) (21) International Application Number: PCT/EP2017/077724 (22) International Filing Date: 30 October 2017 (30.10.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16198226.9 10 November 2016 (10.11.2016) EP (71) Applicant: ABB SCHWEIZ AG [CH/CH]; Brown Boveri Strasse 6, 5400 Baden (CH). (72) Inventor: LINDTJORN, John Olav; Hans Nielsen Hauges Gate 10, 0481 Oslo (NO). (74) Agent: HELIN, William; ABB AB, Intellectual Property, Forskargrand 7, 721 78 Vasteras (SE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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. (54) Title: A DC POWER SYSTEM SEGREGATED INTO DIFFERENT PROTECTION ZONES (57) : The present disclosure relates to a DC power system (1), comprising: a main bus (3), a plurality of power delivery devices (G1-G8, 11-15) configured to be connected to the main bus (3), a first zone partitioning device (7a), and a control system (9), wherein the first zone partitioning device (7a) is configured to segregate the main bus(3) into a first protection zone (Z2) which is a section of the main bus (3) to which power delivery devices (11-15) with a fault clearance requirement in a first time range are configured to be connected, and a second protection zone(Z1) which is a section of the main bus (3) with a fault clearance requirement in a second time range, which includes times that are higher than any time included in the first time range, and to which no power delivery device (G5-G8, 11-15) with a fault clearance requirement in the first time range is configured to be connected, wherein the control system (9) is configured to control the first zone partitioning device (7a) to allow load current to flow from the first protection zone (Z2) to the [Continued on next page] WO 2018/086927 Al MIDEDIMOMOIDEIREIDIONIMEIHEIMERVOIMIE (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: as to the identity of the inventor (Rule 4.17(0) of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3)) second protection zone (Z1) and to limit fault current flow from the first protection zone (Z2) to the second protection zone (Z1).