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Title:
FREQUENCY MODULATION METHOD FOR ISOLATED ISLAND VIRTUAL SYNCHRONOUS MICRO-GRID
Document Type and Number:
WIPO Patent Application WO/2019/205869
Kind Code:
A1
Abstract:
The present invention provides a frequency modulation method and system for an isolated island virtual synchronous micro-grid, and a storage medium. The method comprises: performing frequency modulation on inverters in a micro-grid in a cycle mode until each inverter reaches a rated frequency, wherein each cycle process comprises: S101, determining the inverter having relatively highest active power output in the micro-grid as a reference unit by using a differential delay method, taking a local output factor of the reference unit as the maximum output factor of the cycle process and transmitting said factor to other inverters in the micro-grid by means of a communication line; S102, determining an active power adjusting amount of the inverter; and S103, performing frequency modulation on the inverter according to the active power adjusting amount. The present invention can implement frequency adjustment and active power proportion equipartition on the premise of reducing the communication complexity as much as possible.

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Inventors:
SHUAI, Zhikang (HUANG, WenLushan South Road Lushan Gate, Yuelu Distric, Changsha Hunan 2, 410082, CN)
HUANG, Wen (Lushan South Road Lushan Gate, Yuelu DistrictChangsha, Hunan 2, 410082, CN)
TU, Chunming (HUANG, WenLushan South Road Lushan Gate, Yuelu Distric, Changsha Hunan 2, 410082, CN)
LUO, An (HUANG, WenLushan South Road Lushan Gate, Yuelu Distric, Changsha Hunan 2, 410082, CN)
SHEN, Zheng (HUANG, WenLushan South Road Lushan Gate, Yuelu Distric, Changsha Hunan 2, 410082, CN)
LIU, Xuan (HUANG, WenLushan South Road Lushan Gate, Yuelu Distric, Changsha Hunan 2, 410082, CN)
Application Number:
CN2019/079791
Publication Date:
October 31, 2019
Filing Date:
March 27, 2019
Export Citation:
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Assignee:
HUNAN UNIVERSITY (HUANG, WenLushan South Road Lushan Gate, Yuelu Distric, Changsha Hunan 2, 410082, CN)
International Classes:
H02J3/02
Foreign References:
CN108565861A2018-09-21
CN106684921A2017-05-17
CN105281350A2016-01-27
CN106684910A2017-05-17
CN103580915A2014-02-12
Attorney, Agent or Firm:
BEIJING JIUCHENG INTELLECTUAL PROPERTY AGENCY (SPECIAL ORDINARY PARTNERSHIP) (YU Gang, Block 222 West B, Songlanbao Village, Baisha Road, Shahe Town, Changping District, Beijing 6, 102206, CN)
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