Piconet system for constructing efficient micro grid

Abstract

The invention belongs to the technical field of new energy electric power, and specifically relates to a piconet system for constructing an efficient micro grid. According to the technical scheme provided by the invention, a plurality of electric power control and conversion systems, power generation units, electric power storage units and power utilization loads are combined, each power control and conversion system is connected with the power generation unit, the electric power storage unit and the power utilization load at the same stage, and then the plurality of electric power control and conversion systems are connected stage by stage to form the piconet system which can run independently and can be shared under control. The piconet system is accessed into a micro grid or a large grid as a node system integrating functions of power generation, power supply and electric power storage for the micro grid or the large grid, a plurality of power generation units can be self-sufficient to achieve full autonomy of power generation and power supply, and can be networked through interconnection and can be grid-connected and shared under control. Reasonable overall electric power control on power generation and utilization is realized, adjustment and allocation on various electric power are optimized, and controlled grid connection and resource sharing among subsystems are realized while new energy electric power is utilized preferentially. As distributed power generation and power supply is truly realized and system risks are defused effectively, reliability and safety of a micro grid system are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of new energy electric power, and in particular relates to a piconet system for constructing an efficient microgrid. Background technique [0002] In recent years, new energy power has been valued and supported by governments of various countries, and its application has become more and more extensive. After years of research and application practice, the industry has unanimously confirmed that new energy power systems such as photovoltaics and wind power are gradually becoming mature and widely known, and gradually forming emerging energy and power markets; Electricity belongs to distributed renewable energy, which spreads all over nature and is easy to adopt, but its energy density is relatively low. High-power electric power generation requires a suitable site, and the electric power is unstable, which is an intermittent power source. Distributed microgrid mode is the technical direction, and its details...

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Problems solved by technology

[0007] However, the new energy distributed micro-grid currently on the market, its existing technology and system implementation methods are mainly distributed power generation and centralized power supply, which is the miniaturization of the large power grid. The advantages cannot be fully utilized, and there are obvious defects; such as: relying on the support of the power grid, increasing the investment in high-voltage power transformation, transmission power and secondary power transformation; increasing the consumption from power generation to power consumption; regulation, which increases the difficulty of regulation and storage management; and the system risk cannot be resolved due to concentration

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