Intelligent micro-grid system based on distributed power generation

Abstract

The invention discloses an intelligent micro-grid system based on distributed power generation. The system comprises a power generation and energy storage module composed of a wind power generation subsystem, a photovoltaic power generation subsystem and an accumulator energy storage subsystem, a basic parameter collection module, an environment parameter collection module, a power generation system working condition access module, an information base module, a power condition prediction sub-module, a scheduling decision module, an expert decision analysis module and a man-machine interactionmodule. Cooperative optimization, regulation and control in the whole micro-grid can be performed according to the working conditions, basic parameter data and ambient environment parameter data of each power generation subsystem, so that micro-grid scheduling processes which are optimized as much as possible can be provided, the validity and safety of regulation and control on the whole micro-grid system can be improved, and the operating stability and efficiency of the micro-grid can be improved.

Description

technical field [0001] The field of the micro-grid system of the present invention particularly refers to a smart micro-grid system based on distributed power generation. Background technique [0002] Smart microgrid is a new type of power grid that highly integrates renewable energy power generation technology, energy management system and power transmission and distribution infrastructure. effect. For a long time, my country's new energy development has followed the route of combining centralized development and decentralized utilization: on the transmission grid side, new energy access is mainly based on large-scale centralized grid-connection, and is realized through a strong grid with UHV as the core. Cross-regional clean energy transmission; on the side of the distribution network, new energy is connected to the grid in a decentralized manner with a small capacity, and local consumption is realized through the smart micro-grid. In our country, the development and util...

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Problems solved by technology

At the same time, the wind power generation sub-system and the photovoltaic power generation sub-system are two geographically separated subsystems, but most of the control methods of conventional wind-solar hybrid power generation systems are based on centralized control, which obviously makes the wind-solar hybrid system still have deficiencies; while independent The power generation of new energy such as wind energy or solar energy will lead to large fluctuations in output power, and there are problems such as obvious peak and valley phenomena, mismatch between output power and external loads, sudden changes in the current of wind and solar hybrid power generation, and frequent charging and discharging of batteries.

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