Cooperative control method for multi-energy storage direct current microgrid
A DC microgrid, collaborative control technology, applied in the direction of collectors, electric vehicles, electrical components, etc., can solve the problems of lack of coordinated control of energy storage units, energy storage units cannot effectively participate in microgrid voltage regulation, etc., and achieve reasonable and accurate output. effect of assignment
Inactive Publication Date: 2019-12-03
JIANGSU FRONTIER ELECTRIC TECH +1
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[0004] The purpose of the present invention is to provide a multi-energy storage direct current micro-grid collaborative control method to solve the technical problems in the prior art that energy storage units lack coordinated control and energy storage units cannot effectively participate in the voltage regulation of micro-grids
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[0023] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0024] The present invention proposes a distributed collaborative control method based on consistency for a DC microgrid multi-energy storage system, and the control strategy includes virtual inertia control and consistency control. Virtual inertial control can realize the power interaction between the energy storage device and the microgrid, and enable the energy storage unit to provide voltage inertial support for the grid. The consistency control module realizes information interaction between energy storage devices through low-bandwidth communication, and achieves the purpose of compensating the grid voltage and rationally allocating the reactive output of energy storage devices.
[0025] S...
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The invention discloses a cooperative control method for a multi-energy storage direct current microgrid in the technical field of microgrid demand response. The technical problem that energy storageunits cannot effectively participate in voltage regulation of a microgrid due to the lack of coordinated control between energy storage units in the prior art is solved. The cooperative control methodfor multi-energy storage direct current microgrid comprises virtual inertia control and consistency control. The virtual inertia control realizes power interaction between energy storage units and the microgrid. The consistency control realizes information interaction between energy storage units. According to the cooperative control method for multi-energy storage direct current microgrid, whichis provided by the invention, the virtual inertia control and the consistency control are combined; energy storage units can provide voltage inertia support for the microgrid when voltage fluctuations occur in the microgrid; and reactive power output of energy storage units is reasonably distributed, which ensures that the output of each energy storage unit is reasonably and accurately distributed.
Description
technical field [0001] The invention belongs to the technical field of micro-grid demand response, and in particular relates to a multi-energy storage DC micro-grid collaborative control method. Background technique [0002] In recent years, the development of renewable clean energy and power electronics technology has continuously promoted the advancement of distributed power generation, microgrid and other technologies. Due to the lack of frequency stability and reactive power loss, DC microgrid has received more attention. In order to balance the unbalanced power of the system caused by the intermittency, volatility and randomness of new energy sources such as wind power and photovoltaics, it is necessary to equip a corresponding energy storage system to ensure the stability of the system. [0003] The microgrid energy storage system control is very important to the stability and security of the microgrid. The energy storage system compensates the power difference betwee...
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IPC IPC(8): H02J7/35H02J13/00
CPCH02J7/35Y02E40/70Y04S10/123
Inventor 颜全椿朱小鹏卫志农顾文范立新李辰龙袁超孙国强臧海祥唐一铭单华梅睿
Owner JIANGSU FRONTIER ELECTRIC TECH