Multi-source compound superconductive micro electrical network system and energy management method thereof

Abstract

The invention discloses a multi-source compound superconductive micro electrical network system and an energy management method thereof. The multi-source compound superconductive micro electrical network system comprises a public electrical network subsystem, a renewable energy generation subsystem, a DC bus, a liquid hydrogen main pipe, a liquid oxygen main pipe, an electrical energy storage and utilization subsystem, a composite energy source transmission and utilization subsystem, an energy state monitor and an energy management controller, wherein the energy state monitor is used for monitoring electrical energy state information of the DC bus and energy storage state information of the electrical energy storage and utilization subsystem, the energy management controller is used for controlling the electrical energy storage and utilization subsystem for storing excessive electrical energy on the DC bus, excessive liquid hydrogen in the liquid hydrogen main pipe and excessive liquid oxygen in the liquid oxygen main pipe or compensating insufficient electrical energy in the DC bus, insufficient liquid hydrogen in the liquid hydrogen main pipe and insufficient liquid oxygen in the liquid oxygen main pipe. Through the multi-source compound superconductive micro electrical network system, problems of renewable energy generation intermittence and instability are effectively solved, and high-quality electrical energy use can be realized for user terminals.

Description

technical field [0001] The invention relates to the technical field of superconducting microgrids, in particular to a multi-source composite superconducting microgrid system and an energy management method thereof. Background technique [0002] In recent years, a variety of natural energy sources including wind energy and solar energy have been directly used for large-capacity grid-connected power generation. Directly build large-capacity natural energy power stations in regions rich in natural energy, connect them to external public power grids, and then transmit them to power user groups distributed in different regions through traditional high-voltage transmission lines. Traditional high-voltage transmission lines use copper or aluminum wires to transmit electric energy, which inevitably produces a large amount of electric energy loss. The superconducting DC and AC cables made of high-temperature superconducting wires have the technical advantage of approximately zero lo...

AI Technical Summary

Problems solved by technology

Existing electric energy storage devices are mainly batteries, fuel cells, etc., but their dynamic response speed is slow, and fast electric energy absorption or compensation cannot be realized, and their power density is low, and there is a technical defect of insufficient maximum input / output power

Superconducting magnetic energy storage magnets with the technical advantages of fast dynamic response and large input / output power can make up for the technical defects of electric energy storage devices such as batteries and fuel cells, but their energy density is low and the development cost is expensive.

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