AC/DC smart home micro-grid cooperative system and operation method thereof

Abstract

The embodiment of the invention discloses an AC / DC smart home micro-grid cooperative system, comprising an AC power quality screening modulator, a DC power quality screening modulator and a power cooperative module. The AC / DC smart home micro-grid cooperative system can receive each bus parameter detected by the power quality screening modulator and carry out optimizing calculation, and then controlling the power quality screening modulator to regulate the current, power and voltage of the bus so as to balance the random fluctuation of the generated power of new energy and realize the stable operation of DC / AC home micro-grid. The impact technical problem of power grid caused by intermittent feature of new energy in the existing technology has been solved; so that new energy is in 100% of parallel network and AC / DC smart home micro-grid cooperative system can present pure resistive and time sharing constant power to the electric supply.

Description

technical field [0001] The invention relates to the field of microgrids, in particular to an AC / DC smart home microgrid coordination system and an operating method thereof. Background technique [0002] Micro-grid (Micro-Grid), also translated as micro-grid, refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices, etc. Microgrid is an autonomous system capable of self-control, protection and management, which can be connected to the external grid or run in isolation. The proposal of microgrid aims to realize the flexible and efficient application of distributed power, and solve the problem of grid connection of distributed power with a large number and various forms. The "Opinions of the State Council on Strengthening Urban Infrastructure Construction" pointed out that it is necessary to "promote the intelligentization of urban power grids to...

AI Technical Summary

Problems solved by technology

[0006] The existing power grid takes "lines" as the basic scheduling unit, lacks the ability to schedule specific electrical equipment, and cannot actively play the role of precious "resources" such as "power quality non-sensitive loads" in regulating the balance of power supply and demand. When supply and demand are out of balance, all loads on a certain line can only be cut off passively, causing losses to users who are passively powered off

Under this scheduling method, if a large number of new energy sources with random power generation are forcibly connected, the reliability of the power grid will be further reduced

At the same time, the intermittent characteristics of conventional new energy have caused a great impact on the stability of the power grid

[0007] Therefore, it is necessary to establish a new type of AC-DC hybrid smart home micro-grid to solve the technical problem that the intermittent characteristics of the conventional new energy in the prior art have caused a great impact on the stability of the power grid.

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