Energy management system of micro-grid

Abstract

The invention relates to an energy management system of a micro-grid. The energy management system of the micro-grid comprises inverters, electric energy meters, an electric energy quality monitoring terminal, measurement and control protective devices, a micro-grid coordination controller, at least one energy management subsystem, an energy integrated management system and a communication network, wherein the inverters, the electric energy meters and the measurement and control protective devices are in communication connection with the micro-grid coordination controller through the communication network, the electric energy quality monitoring terminal is in communication connection with the energy management subsystem through the communication network, the micro-grid coordination controller is in communication connection with the energy management subsystem, and the energy management subsystem is in communication connection with the energy integrated management system. The energy management system of the micro-grid achieves the function of optimal control over a distributed power source, the function of energy economic dispatch of the distributed power source, the function of reactive power optimization of the distributed power source, the function of electric energy quality monitoring of the distributed power source and the like, and is used for solving the problem that an existing micro-grid control technology is low in economic benefit and environmental benefit.

Description

Technical field [0001] The invention relates to the technical field of microgrids, and in particular to a microgrid energy management system. Background technique [0002] Distributed power generation technology has received extensive attention from the whole society due to its advantages such as improving system power supply reliability, reducing end user costs, reducing line losses, and improving power quality. Distributed power generation mainly includes various types of renewable energy power generation (wind energy, solar energy, biomass energy, etc.), and its clean and environmentally friendly characteristics meet the requirements of low-carbon economic development. However, due to its own intermittent, volatility, randomness and other characteristics, the individual distributed generation connected to the grid has brought certain impacts on the grid, which not only leads to more complex power flow and fault mechanism characteristics of the grid, but also due to its resista...

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Problems solved by technology

[0004] The current micro-grid management technology does not realize the functions of distributed power optimal control, energy economic dispatch, renewable energy output forecast, demand-side response and plug-and-play, which seriously weakens the environmental and economic benefits brought by the micro-grid system.

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