Title:
DIRECT CURRENT DISTRIBUTION NETWORK PROTECTION METHOD AND SYSTEM, AND FAILURE RECOVERY METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/165859
Kind Code:
A1
Abstract:
Disclosed in the present invention are a direct current distribution network protection method and system, and a failure recovery method and system. According to the present invention, a failure position is determined on the basis of overcurrent directions and a failure is effectively isolated; after failure isolation, a failure recovery instruction is issued on the basis of a network topology matrix; each converter device is unlocked to restore power supply. The entire process lasts no more than 100 milliseconds, and safe and reliable operation of a direct current distribution network is effectively guaranteed.
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Inventors:
WANG CHENQING (CN)
GAO LEI (CN)
LUO FEI (CN)
LI PENG (CN)
KONG XIANGPING (CN)
YANG YI (CN)
ZHANG CHI (CN)
ZHENG JUNCHAO (CN)
LIN JINJIAO (CN)
GAO LEI (CN)
LUO FEI (CN)
LI PENG (CN)
KONG XIANGPING (CN)
YANG YI (CN)
ZHANG CHI (CN)
ZHENG JUNCHAO (CN)
LIN JINJIAO (CN)
Application Number:
PCT/CN2021/077003
Publication Date:
August 11, 2022
Filing Date:
February 20, 2021
Export Citation:
Assignee:
STATE GRID JIANGSU ELECTRIC POWER RES INSTITUTE (CN)
JIANGSU ELECTRIC POWER RES INST CO LTD (CN)
JIANGSU ELECTRIC POWER RES INST CO LTD (CN)
International Classes:
H02H7/26; H02J1/00
Foreign References:
| CN108988305A | 2018-12-11 | |||
| CN107872058A | 2018-04-03 | |||
| CN111969568A | 2020-11-20 | |||
| CN110224383A | 2019-09-10 | |||
| CN106026045A | 2016-10-12 | |||
| EP3696927A1 | 2020-08-19 |
Attorney, Agent or Firm:
NANJING ZONGHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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