Household energy integration system

Abstract

The invention discloses a household energy integration system. The system comprises an alternating power grid used for providing alternating current for household electrical appliances, a direct current power grid used for providing direct current for the household electrical appliances and a bidirectional inverter. The bidirectional inverter is connected between the alternating current power gridand the direct current power grid, and used for converting the alternating current provided by the alternating current power grid into direct current under the triggering of an alternating-direct triggering signal and merging the direct current into the direct current power grid, and converting the direct current provided by the direct current power grid into alternating current under the triggering of a direct-alternating triggering signal and merging the alternating current into the alternating current power grid. According to the invention, by effectively fusing the alternating current micro-grid and the direct-current micro-grid, stability and safety of an alternating-direct current network system are improved.

Description

technical field [0001] The present invention relates to the technical field of power systems, in particular to a household energy integration system. Background technique [0002] With the advancement of technology, especially the development of energy-saving technology in recent years, a variety of energy acquisition devices and conversion devices have entered the family, such as solar photovoltaic power generation, solar thermal utilization, wind power generation, large-capacity batteries, etc. The rational configuration and effective use of these devices Management has a decisive influence on the energy saving effect. [0003] The use of DC power supply in residential buildings is an inevitable trend in the development of residential energy-saving technology in recent years. Relevant organizations have calculated that if the DC power supply is fully implemented in residential buildings, the energy saved only in the process of electric energy conversion is about 10-20% of...

AI Technical Summary

Problems solved by technology

AC microgrid is the main form of microgrid at present. Its structure is conducive to combining with distribution network and drawing on the control ideas of traditional power grid. However, the main problems existing in traditional power grid such as frequency, reactive power, phase and harmonic are still the current AC Microgrid research urgently needs to be solved; DC microgrid, as a more efficient access form of distributed power supply and DC load, has high efficiency, large power supply capacity, good anti-interference performance, high reliability, relatively simple control, and low power consumption. Low advantages, however, protection technology is still the application bottleneck of DC microgrid

Images