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Control method of new energy micro-grid electric automobile charging station

A technology of electric vehicles and control methods, applied in the direction of electric vehicle charging technology, power network operating system integration, electrical components, etc., can solve problems such as unstable system control, imperfect control management functions, and unstable control, etc., to achieve control Stable and efficient, easy to control, efficient and stable, scientific and reasonable control effect

Active Publication Date: 2017-03-29
ZHONGSHAN BROAD OCEAN +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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, and there is also a 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

Method used

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  • Control method of new energy micro-grid electric automobile charging station
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  • Control method of new energy micro-grid electric automobile charging station

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Experimental program
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Embodiment 1

[0043] Such as Figure 1 to Figure 3 As shown, this embodiment provides a new energy microgrid electric vehicle charging station, including a new energy microgrid electric vehicle charging station unit module, and the new energy microgrid electric vehicle charging station unit module includes a distribution Electric module, energy storage module, distributed new energy generation unit, load, distributed new energy generation unit and micro-grid control management system, the load is an electric vehicle charging pile or an electric vehicle charger, wherein: the variable The power distribution module includes a high-voltage power distribution device, a distribution transformer, and a low-voltage power distribution device. The input end of the high-voltage power distribution device is connected to an external high-voltage power grid, and the primary side of the distribution transformer is connected to the output end of the high-voltage power distribution device. The secondary sid...

Embodiment 2

[0066] Such as Figure 7 , Figure 8 As shown, this embodiment provided by this embodiment provides a new energy microgrid electric vehicle charging station, including two new energy microgrid electric vehicle charging station unit modules, which are respectively a first-class new energy microgrid electric vehicle The charging station unit module and the second-level new energy microgrid electric vehicle charging station unit module, the first-level new energy microgrid electric vehicle charging station unit module and the second-level new energy microgrid electric vehicle charging station unit module are described in the first embodiment The unit modules of the new energy microgrid electric vehicle charging station are the same. Figure 8 Due to the length of the picture, the structures of the first-level new energy micro-grid electric vehicle charging station unit module and the second-level new energy micro-grid electric vehicle charging station unit module are not drawn, ...

Embodiment 3

[0070] Figure 10 As shown, what this embodiment provides is a new energy microgrid electric vehicle charging station, including four new energy microgrid electric vehicle charging station unit modules, which are respectively a first-level new energy microgrid electric vehicle charging station unit module, Second-level new energy microgrid electric vehicle charging station unit module, third-level new energy microgrid electric vehicle charging station unit module and fourth-level new energy microgrid electric vehicle charging station unit module; first-level new energy microgrid electric vehicle charging station unit The input end of the high-voltage grid access switch of the module is connected to the external high-voltage grid, and the module cascade switch of the first-level new energy microgrid electric vehicle charging station unit module is connected with the high voltage of the second-level new energy microgrid electric vehicle charging station unit module. The power gr...

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Abstract

The invention discloses a control method of a new energy micro-grid electric automobile charging station. The control method comprises the following steps: performing active power control operation under a grid-connected mode: detecting all operation parameters, judging whether the load power capacity detected in real time reaches the maximum allowable power capacity, and starting an energy storage module to increase the discharge power or reduce a load of the energy storage module if the load power capacity reaches the maximum allowable power capacity; judging whether main voltage of a low-voltage main bus reaches an upper limit voltage value, and reducing the discharge power of the energy storage module if the main voltage of the low-voltage main bus reaches the upper limit voltage value and if the energy storage module discharges electricity; if the energy storage module is not in a discharge state, suppressing a distributed new energy power generation unit; and judging whether the main voltage of the low-voltage main bus reaches a lower limit voltage value, and starting the energy storage module to increase the discharge power or reduce a load of the energy storage module if the main voltage of the low-voltage main bus reaches the lower limit voltage value. The control method is stable and efficient in control.

Description

[0001] Technical field: [0002] The invention relates to a control method for a new energy microgrid electric vehicle charging station. [0003] Background technique: [0004] 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. [0005] 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: [0006] 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...

Claims

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Application Information

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IPC IPC(8): H02J3/32H02J3/14H02J3/16
CPCH02J3/14H02J3/16H02J2310/60H02J3/322Y04S20/222Y04S30/12Y02B70/3225Y02T90/167
Inventor 朱毅彭勇梁峰曹亮张轶龚铖朱焰
Owner ZHONGSHAN BROAD OCEAN