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Patent Searching and Data


Title:
VOLTAGE COORDINATION CONTROL METHOD FOR AC/DC POWER DISTRIBUTION SYSTEM AND AC/DC POWER DISTRIBUTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/056747
Kind Code:
A1
Abstract:
A voltage coordination control method for an AC/DC power distribution system for energy storage and access comprising: using a voltage-current droop control model to generate a current reference current signal for a converter according to a first DC voltage and a first DC current, and generate a first control signal according to the current reference current signal, so as to control an output status of the converter; acquiring a DC side actual voltage of an energy storage adapter in the AC/DC power distribution system, obtaining a second DC voltage, and using the voltage-current droop control model to generate a current reference power signal for the energy storage adapter according to the second DC voltage, and generate a second control signal on the basis of the current reference power signal, so as to control an output status of the energy storage adapter. The method coordinates, according to voltage-current droop control characteristics, flexible apparatuses to operate in a balanced manner, thereby leveraging voltage regulation capabilities thereof, and improving controllability of DC voltage. In addition, the method reduces the burden from voltage regulation on a battery-based energy storage device, suppressing frequent charging and discharging of the battery-based energy storage device, and extending a service life of the battery-based energy storage device.

Inventors:
ZHANG XINHUI (CN)
PENG KE (CN)
ZHAO XUESHEN (CN)
CHEN JIAJIA (CN)
XU BINGYIN (CN)
Application Number:
PCT/CN2019/118104
Publication Date:
April 01, 2021
Filing Date:
November 13, 2019
Export Citation:
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Assignee:
UNIV SHANDONG TECHNOLOGY (CN)
International Classes:
H02J3/32
Foreign References:
CN110649642A2020-01-03
CN103944182A2014-07-23
US20160094037A12016-03-31
Other References:
ZHAO, XUESHEN ET AL.: "Droop Control Method for Flexible DC Distribution System Based on Feedforward Compensation", AUTOMATION OF ELECTRIC POWER SYSTEMS, vol. 42, no. 15, 10 August 2018 (2018-08-10), pages 94 - 101, XP055795511, ISSN: 1000-1026
MENG MING: "Research on Hierarchical Control in AC / DC Distribution Network on the Basis of Optimal Power Flow", ELECTRIC POWER CONSTRUCTION, vol. 39, 31 August 2018 (2018-08-31), pages 94 - 101, XP055795517
Attorney, Agent or Firm:
YUHUA UNITED INTELLECTUAL PROPERTY LAW FIRM (CN)
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