Distributed energy management method and distributed energy management device composed of ground layer, intermediate layer and energy management layer

Abstract

The invention relates to a distributed energy management method and device. The distributed energy management device is composed of a ground layer, an intermediate layer and an energy management layer. The ground layer comprises a distributed power controller, an energy storage controller, a load controller, an invertor, a converter and a breaker. The intermediate layer comprises a data communication module, an operation control module, an energy storage management module and a load management module. The energy management layer comprises a data communication and monitoring module, an economic dispatch and optimal operation module, a load prediction module and a power generation prediction module. The ground layer and the intermediate layer coordinate and control short-term power in a local micro-grid system to be stable; the energy management layer coordinates and controls long-term power in the micro-grid system where the energy management layer belongs to be stable, and economization of micro-grid operation is achieved; meanwhile, the distributed energy management device is clear in structure, functions are specific, and system upgrade and function extension are facilitated.

Description

technical field [0001] The invention relates to a distributed energy management device and method, in particular to a distributed energy management device and method which are divided into an in-situ layer, an intermediate layer and an energy management layer. Background technique [0002] The distributed energy management system is the control core of distributed energy. The distributed micro-grid itself has a small capacity. Coupled with changes in photovoltaics, wind power, and loads, distributed energy itself is volatile and intermittent, so an energy storage system is needed to solve the problem. . Distributed energy is generally connected through the interface of power electronic equipment. Power electronic equipment has the characteristics of fast response speed, small output impedance, and low overload capacity, so it increases the difficulty of microgrid control, and the voltage and frequency of microgrid vary greatly. The control system needs to coordinate various...

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Problems solved by technology

[0004] The existing energy management system has problems such as large changes in micro-grid voltage and frequency, poor stability, low economic efficiency of power grid operation, insufficient openness and scalability of the system, unclear structure, and inconvenient system upgrades and function expansions.

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