Circulation power theory-based distributed parallel control method applied to miniature power grid system island mode
A micro-grid and control method technology, which is applied in many fields, can solve the problems such as the inability to completely eliminate the circulating reactive power of the inverter, suppress the decline of the circulating current performance, and the amplitude error, achieve high redundancy and reliability, eliminate the Steady-state deviation, the effect of eliminating circulating active power and circulating reactive power
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[0063] The schematic diagram of the application of the distributed parallel control method based on the circulation power theory in the island mode of the micro-grid system according to the present invention is as follows image 3 shown. The a-th inverter in the figure can represent any inverter unit (including the first inverter unit). In the control method proposed by the present invention, the parallel control strategy of each inverter in the island mode of the micro-grid system is exactly the same, and all adopt the following image 3 A schematic diagram of the control structure is shown.
[0064] Such as image 3 As shown, the method of the present invention adopts the control structure of distributed parallel operation, and the distributed power sources in the microgrid system are connected to the AC bus through the inverter unit, and run in parallel mode in the island mode. At the same time, the method is based on the communication network, and the controllers of eac...
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