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Method and system for sharing power supply transformer load for electric vehicle charging device

A technology for charging equipment and electric vehicles, applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., can solve problems such as safety problems in power distribution systems, and achieve the effect of ensuring safe and reliable operation and reducing peak loads

Inactive Publication Date: 2017-08-11
JIANGSU ELECTRIC POWER CO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the power distribution facilities cannot meet the charging load demand of electric vehicles, it is easy to cause problems in the safety of the power distribution system

Method used

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  • Method and system for sharing power supply transformer load for electric vehicle charging device
  • Method and system for sharing power supply transformer load for electric vehicle charging device
  • Method and system for sharing power supply transformer load for electric vehicle charging device

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Embodiment Construction

[0031] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0032] As the first aspect of the present invention, such as figure 1 As shown, a transformer load sharing method for electric vehicle charging equipment power supply is provided, wherein the electric vehicle charging equipment power supply transformer load sharing method includes:

[0033] S110. Real-time monitoring of the current output of the transformer and the current charging load of each electric vehicle charging device charged through the transformer;

[0034] Specifically, the transformer can supply power and charge multiple charging devices. Therefore, the current output of the transformer includes charging loads of all charging devices for electric v...

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Abstract

The invention discloses a method for sharing a power supply transformer load for an electric vehicle charging device. The method comprises: a current output of a transformer and a current charging load of each electric vehicle charging device are monitored in real time; a non-charging load is calculated by deducting the current charging loads of all electric vehicle charging devices from the current output of the transformer; an available charging load is calculated by deducting the non-charging load from a rated load of the transformer; a shared charging load is calculated by dividing the available charging load by the number of all the electric vehicle charging devices; and the electric vehicle charging device is controlled to be charged normally when the shared charging load is not less than the rated charging power of the electric vehicle charging device. The invention also discloses a system for sharing a power supply transformer load for an electric vehicle charging device. The method can ensure reliable running of the transformer and reduce the peak load.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a load sharing method for a transformer for power supply of electric vehicle charging equipment and a load sharing system for a transformer for power supply of electric vehicle charging equipment. Background technique [0002] Nowadays, due to its important role in alleviating energy crisis and environmental pollution, electric vehicles have been vigorously developed in many countries in the world. Since 2015, in order to alleviate the "mileage anxiety" of electric vehicle owners and promote the widespread popularization of electric vehicles, China has begun to accelerate the pace of local electric vehicle charging facilities construction. China plans to build 4.8 million chargers by 2020, and China also plans to increase the number of electric vehicles in the country to 5 million by 2020, which means that by 2020, the ratio of China's electric vehicles to charging faci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00B60L11/18
CPCB60L53/63H02J3/00Y02T10/70Y02T10/7072Y02T90/12
Inventor 吴骏刘军成诸军陈黎军沈海平冯远勇晔陈铭
Owner JIANGSU ELECTRIC POWER CO
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