Wind, diesel and storage independent power supply switching system and power supply switching method for communication base station

Abstract

The invention relates to a wind, light and diesel storage independent power supply switching system for a communication base station. The system comprises a wind power generator, a photovoltaic power generation array, a storage battery set, a diesel generator set, a communication base station load, a micro-network monitoring system, a digital signal processor, an alternating current load, DC / AC converters and a controllable load, wherein, an electric energy output end of the wind power generator is connected with an alternating current power supply input end of a first AC / DC converter, a direct current power output end of the first AC / DC converter is connected with an input end of a first DC / DC converter, an electric energy output end of the photovoltaic power generation array is connected with an input of a second DC / DC converter, an electric energy output end of the storage battery set is connected with an input end of a third DC / DC converter, and an electric energy output end of the diesel generator set is connected with an alternating current power supply input of a second AC / DC converter. According to the wind, light, diesel storage independent power supply switching system for the communication base station, and when a diesel engine accesses or exits from the system, the voltage of a direct current bus keeps stable all the time.

Description

technical field [0001] The invention relates to the technical field of DC micro-grid systems, in particular to a wind-solar-diesel-storage independent power supply switching system and a power supply switching method for a communication base station. Background technique [0002] With the popularization of mobile phones, the coverage requirements for mobile signals are becoming more and more extensive, and the construction of communication base stations has gradually spread from urban centers to remote areas. In some remote areas, it is difficult to connect to mains power due to geographical restrictions. Usually, we choose to use the abundant local resources such as wind and solar to generate complementary power. Since the power generation of natural resources such as scenery is greatly affected by climate and seasons, it is necessary to add an energy storage device battery to stabilize the entire system. When the battery fails or encounters continuous cloudy and rainy day...

AI Technical Summary

Problems solved by technology

However, every time the diesel engine is connected to or withdrawn from the power generation system, the DC bus voltage will be fluctuated

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