Title:
COOPERATIVE CONTROL METHOD FOR DISTRIBUTED VOLTAGE SOURCE CONVERTER, AND ALTERNATING-CURRENT/DIRECT-CURRENT HYBRID MICROGRID
Document Type and Number:
WIPO Patent Application WO/2022/165914
Kind Code:
A1
Abstract:
Disclosed in the present invention are a cooperative control method for a distributed voltage source converter, and an alternating-current/direct-current hybrid microgrid. The method comprises: adjusting a power flow between an alternating-current sub-grid and a direct-current sub-grid by means of a bidirectional interlinking converter; when a load of the alternating-current sub-grid suddenly changes, calculating the total optimal power input of the alternating-current sub-grid, and determining whether the DER total power in the current alternating-current sub-grid reaches the total optimal power input of the alternating-current sub-grid; if so, calculating an input power contribution of each DER in the alternating-current sub-grid by means of a virtual inertia algorithm; and if the DER total power in the current alternating-current sub-grid does not reach the total optimal power input of the alternating-current sub-grid, and the DER in the direct-current sub-grid has redundant power, the direct-current sub-grid participating in cooperative control. The present invention remarkably improves the inertia of a microgrid, reduces a communication bandwidth, prolongs the service life of a storage device, and has the characteristics of fast and stable control.
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Inventors:
ZHANG ZHENBIN (CN)
BABAYOMI OLULEKE (CN)
LI ZHEN (CN)
WANG RUIQI (CN)
HU CUNGANG (CN)
BABAYOMI OLULEKE (CN)
LI ZHEN (CN)
WANG RUIQI (CN)
HU CUNGANG (CN)
Application Number:
PCT/CN2021/080170
Publication Date:
August 11, 2022
Filing Date:
March 11, 2021
Export Citation:
Assignee:
UNIV SHANDONG (CN)
International Classes:
H02J5/00; H02J1/10; H02J3/24; H02J7/34
Domestic Patent References:
| WO2018074651A1 | 2018-04-26 |
Foreign References:
| CN108199380A | 2018-06-22 | |||
| CN108964087A | 2018-12-07 | |||
| CN104917208A | 2015-09-16 | |||
| CN111431186A | 2020-07-17 | |||
| US20160099567A1 | 2016-04-07 |
Other References:
LIU ZHONG, YANG CHEN; JIANG WEI; LI PEIPEI; YANG BO; LIANG MING: "Consensus Algorithm Based Power Distribution Technology for Energy Storage System in DC Microgrid", AUTOMATION OF ELECTRIC POWER SYSTEMS, NANJING ZIDONGHUA YANJIUSUO, NANJING, CN, vol. 44, no. 7, 10 April 2020 (2020-04-10), CN , pages 61 - 69, XP055956834, ISSN: 1000-1026, DOI: 10. 7500/AEPS20190515005
Attorney, Agent or Firm:
JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO.,LTD. (CN)
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