A control method for a new energy microgrid electric vehicle charging station

Abstract

The invention discloses a control method for a new energy micro-grid electric vehicle charging station. Active power control operation is performed in a networking mode: various operating parameters are detected; and whether the load power capacity detected in real time reaches the maximum allowable power capacity is judged. If reached, Then open the energy storage module, increase the discharge power of the energy storage module or reduce the load; judge whether the main voltage of the low-voltage main bus reaches the upper limit voltage value, if reached, if the energy storage module is discharging, then reduce the discharge power of the energy storage module; If the energy storage module is not in the discharge state, then suppress the distributed new energy generation unit; judge whether the main voltage of the low-voltage main bus reaches the lower limit voltage value, if so, turn on the energy storage module, increase the discharge power of the energy storage module or reduce load. It controls stable and efficient.

Description

Technical field: [0001] The invention relates to a control method for a new energy microgrid electric vehicle charging station. Background technique: [0002] As battery-powered electric vehicles continue to appear and quickly enter the market, whether the charging problem of the power batteries of these vehicles can be solved has become one of the keys to whether this type of new energy vehicles can be popularized and applied. [0003] The power of the conventional electric vehicle charging (replacing) station is taken from the public distribution network, and the power is provided to the electric vehicle charging pile (charger) after stepping down. At present, although some new energy microgrid electric vehicle charging stations have appeared, they have the following shortcomings: [0004] 1) The control and management functions are not perfect, the control is not stable, and there is a lack of medium and long-term stability control and energy management of the microgrid,...

AI Technical Summary

Problems solved by technology

[0004] 1) The control and management functions are not perfect, the control is not stable, the lack of medium and long-term stability control and energy management of the microgrid, and the lack of coordination command transformation and distribution modules, energy storage modules, distributed new energy generation units, loads, and reactive power compensation The work of the equipment is responsible for the transient stability control in the microgrid, so the control of the whole system is unstable and inefficient

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