Intelligent household microgrid system based on technology of internet of things

Abstract

The invention relates to an intelligent household microgrid system based on a technology of internet of things. The intelligent household microgrid system includes an energy system and a control platform thereof. The energy system includes a photovoltaic cell, a chopper module, an energy storage device, a rectifying module and a PCC (point of common connection) switch. The control platform includes a CPU, a storage module, a ZigBee wireless networking device (full-function ZigBee (FFD) main coordinator, a local ZigBee universal remote controller, and a reduced-function (RFD) ZigBee terminal node) and a peripheral interface. The control platform of the intelligent household microgrid system also includes a cloud computation background service system in the broad sense. The intelligent household microgrid combines intelligent grid, microgrid and internet of things technologies and one of great characteristics of the intelligent household microgrid is that a ZigBee wireless technology is introduced to the household microgrid so that the system is capable of networking flexibly. The intelligent household microgrid system is combined with a peak-valley electrovalency system to realize functions such as reliable power supplying through combination of self generation and grid power, intelligent scheduling of distributed photovoltaic power generation, intelligent charging and discharging of the storage device under different states, power bidirectional flowing between the system and the grid, real-time visualization of electricity quantity information and automatic switching of grid connection and grid isolation and the like.

Description

technical field [0001] The invention relates to a smart household microgrid system based on Internet of Things technology, in particular to a smart household microgrid system based on smart grid, microgrid and Internet of Things technology. Background technique [0002] Due to its huge reserves, wide distribution, cleanness, and safety, distributed photovoltaic power generation is gradually considered to be an effective way to meet the growing demand for electricity, reduce greenhouse gas emissions, and improve comprehensive energy utilization. Although photovoltaic power generation has outstanding advantages, it is a typical intermittent energy source with the characteristics of large energy fluctuations. In order to fully tap the value and benefits brought by distributed energy to the power grid and users, scholars have proposed the concept of Microgrid. [0003] The micro-grid combines a group of energy sources, energy storage devices and loads in a similar area for coor...

AI Technical Summary

Problems solved by technology

[0006] The traditional household photovoltaic power generation system lacks friendly interaction with smart home systems, power companies, and users, cannot provide high-standard real-time electricity consumption information, cannot adapt to the peak-valley electricity price system, and cannot realize two-way flow of electric energy with the grid , the lack of the necessary technical basis for users to access the power grid, resulting in waste of resources; in addition, the traditional micro-grid uses wired communication, which has poor flexibility; there is no friendly user interface; the degree of automation is low; it cannot adapt to interactive communication in the context of smart grids, Requirements for demand side management and real-time electricity pricing

At present, the self-generation system in the smart home also lacks practical research results. It cannot guarantee the normal operation of the smart home system in the event of a power outage or failure. The reliability is poor, and there is no practical charging and discharging strategy for energy storage devices.

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