(19)
(11) EP 4 332 821 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
08.05.2024 Bulletin 2024/19

(43) Date of publication:
06.03.2024 Bulletin 2024/10

(21) Application number: 21941589.0

(22) Date of filing: 13.09.2021
(51) International Patent Classification (IPC): 
G06F 30/3947(2020.01)
G06N 3/00(2006.01)
 G06F 30/398(2020.01)
(52) Cooperative Patent Classification (CPC):
Y02E 60/60
(86) International application number:
PCT/CN2021/117926
(87) International publication number:
WO 2022/237022 (17.11.2022 Gazette 2022/46)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 12.05.2021 CN 202110517868

(71) Applicants:
  • Electric Power Research Institute. China Southern Power Grid
    Guangzhou, Guangdong 510663 (CN)
  • China Southern Power Grid
    Guangzhou, Guangdong 510663 (CN)

(72) Inventors:
  • LI, Huan
    Guangzhou, Guangdong 510663 (CN)
  • FU, Chuang
    Guangzhou, Guangdong 510663 (CN)
  • XU, Shukai
    Guangzhou, Guangdong 510663 (CN)
  • ZHAO, Xiaobin
    Guangzhou, Guangdong 510663 (CN)
  • XIN, Qingming
    Guangzhou, Guangdong 510663 (CN)

(74) Representative: von Hirschhausen, Helge 
Grosse - Schumacher - Knauer - von Hirschhausen Patent- und Rechtsanwälte Nymphenburger Straße 14
80335 München
80335 München (DE)

   


(54) DESIGN METHOD AND SYSTEM FOR DIRECT-CURRENT LOOP IMPEDANCE


(57) Provided are a design method and system for a direct-current loop impedance. An optimal direct-current loop impedance is obtained by means of direct calculation by a mathematical model, such that tedious modeling and simulation time in electromagnetic transient software is reduced, thereby improving the calculation efficiency; by means of the design method, global solving is performed in a feasible region of system parameters, and the obtained optimal system parameter and direct-current loop impedance are results which most meet an optimization goal when the system is stable, such that a situation of there possibly being inconsideration or unthorough optimization in manual iterative design, etc., is avoided, and therefore the precision of direct-current loop impedance design is higher; and furthermore, parameterized parsing and optimization design can be performed on a direct-current loop impedance according to different optimization design goals, such that there is no need to perform repeat targeted adjustment and iteration on the system parameters by a professional designer, thereby reducing manpower and time, and solving the technical problems of existing design methods for a direct-current loop impedance having relatively low efficiency and relatively poor precision.