Adaptive adjusting system applied to electric vehicle and distributed photovoltaic power generation system

Abstract

The invention discloses an adaptive adjusting system applied to an electric vehicle and a distributed photovoltaic power generation system, and relates to the power grid load intelligent regulation and control field; the adaptive adjusting system comprises the distributed photovoltaic power generation system, the electric vehicle and a power distribution network; the distributed photovoltaic power generation system and the electric vehicle are connected with the power distribution network; the adjusting system also comprises a converter device; the distributed photovoltaic power generation system is connected with the electric vehicle and the power distribution network through the converter device. The system uses the electric vehicle charging adjustable characteristics to assist and solve the renewable energy intermittence problems, thus reducing the energy storage system cost; only the primary voltage converter device is needed between the distributed photovoltaic power generation system and a DC bus, thus realizing economical construction cost and higher power transmission efficiency; synchronization problems between various renewable energy forms and the circulation inhibition problem can be better solved; the DC-link essence has no harmonic wave factor interference, thus providing better electric energy quality.

Description

technical field [0001] The invention relates to the field of intelligent regulation and control of grid loads, in particular to an adaptive regulation system for electric vehicles and distributed photovoltaic power generation systems. Background technique [0002] With the rapid development of the power grid, distributed photovoltaic power generation systems and / or electric vehicles are more and more widely used. Due to the large load fluctuations of distributed photovoltaic power generation systems and / or electric vehicles, distributed photovoltaic power generation systems When a large number of single-phase systems and / or electric vehicle power supplies are connected to the low-voltage distribution network, it will cause serious three-phase imbalance problems in the distribution network, which will seriously reduce the power quality of the distribution line. [0003] According to the symmetrical component method, when the three-phase current or voltage is asymmetrical, the...

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Problems solved by technology

[0004] Aiming at the defects existing in the prior art, the object of the present invention is to provide an adaptive adjustment system for electric vehicles and distributed photovoltaic power generation systems, which can avoid the single-phase large-scale connection of distributed photovoltaic power generation systems and / or electric vehicle power supplies. When entering the low-voltage distribution network, it will cause the problem of three-phase imbalance in the distribution network, which can improve the power quality of the distribution line

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