Off-grid and grid-connected integrated power supply control method and system

Abstract

The invention belongs to the technical field of power control and discloses an off-grid and grid-connected integrated power supply control method and system. The off-grid and grid-connected integratedpower supply control system comprises an electric energy acquisition module, a diesel power generation acquisition module, a wind power generation acquisition module, a photovoltaic power generationacquisition module, an electromagnetic switch control module, a central processing module, a wireless communication module, a remote terminal, a power generation module, a signal conversion module, anenergy management module and an electric quantity data analysis module. According to the invention, the integrated operation of the internal power supply and the load can be realized, and the requirements of users on distributed power supply access, electric energy quality, power supply reliability and safety are met. According to the invention, efficient conversion of each input energy source can be carried out on the premise of keeping the stability of the power grid, the intelligent distributed control management system can also ensure that renewable energy sources are used preferentiallyand efficiently, the consumption of fuel is reduced to the greatest extent, and stable, safe and reliable operation and energy supply of the whole system are ensured.

Description

technical field [0001] The invention belongs to the technical field of electric power control, and in particular relates to an off-grid integrated power control method and system. Background technique [0002] At present, the electricity used by residents is basically supplied by the mains power grid. In remote areas, such as mountainous areas, once the power grid system is damaged or natural disasters cause damage to the power grid system, the electricity consumption of residents will be disturbed. In milder cases, the power supply may be restored the next day, and in severe cases, there will be power outages for several days, which will cause great inconvenience to the lives of residents. [0003] Market survey analysis shows that the power supply system used by communication base stations is mostly the mains power provided by the grid, which supplies power to communication modules after rectification and DC / DC conversion. But in the long run, there are problems with such...

AI Technical Summary

Problems solved by technology

This type of power supply system requires high equipment costs. At the same time, due to the large difference in the use time of the off-grid inverter and the grid-connected inverter, the service life of the two inverters is also quite different, and the replacement cycle is different. Inconvenience to maintenance

[0005] Through the above analysis, the problems and defects of the existing technology are: the existing power supply system cannot realize the integrated operation of the internal power supply and the load, and the existing energy supply can only rely on one type, and the diversified supply of energy cannot be realized. And the system is unstable and not easy to maintain

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