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Micro-grid reliability evaluation method containing electric vehicle charging station

A technology for electric vehicles and micro-grids, which is applied in the fields of electrical digital data processing, single-grid parallel feeding arrangement, special data processing applications, etc., and can solve the problems of complex grid structure and operation mode.

Active Publication Date: 2019-09-17
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the large-scale connection of electric vehicles to the power grid, the structure and operation of the power grid become more and more complex
There are currently no assessment methods for evaluating the operational reliability of microgrids that include EV charging stations

Method used

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  • Micro-grid reliability evaluation method containing electric vehicle charging station
  • Micro-grid reliability evaluation method containing electric vehicle charging station
  • Micro-grid reliability evaluation method containing electric vehicle charging station

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Embodiment

[0071] like figure 1 As shown, the present invention provides a method for evaluating the operation reliability of a microgrid containing an electric vehicle charging station, comprising the following steps:

[0072] S1 calculates the state of charge of the power battery of the electric vehicle at each time point according to the operating characteristics of the electric vehicle in the microgrid;

[0073] S2 establishes an interactive response power calculation model according to the internal power interaction strategy of the microgrid;

[0074] S3 divides the microgrid according to the position of the network switch and the breaking characteristics of different types of switches;

[0075] S4 adopts different switching action strategies to isolate faults according to the different areas where the internal fault points are located when the microgrid is operating in an isolated island;

[0076] S5 uses a sequential Monte Carlo simulation algorithm to evaluate the operational r...

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Abstract

The invention relates to a micro-grid reliability evaluation method containing an electric vehicle charging station, which comprises the following steps of: 1) obtaining the state of charge of an electric vehicle power battery at each time point according to the operation characteristics of an electric vehicle in a micro-grid; 2) establishing an interactive response power calculation model according to an internal power interactive strategy of the microgrid; 3) carrying out regional division on the microgrid according to the positions of the network switches and the on-off characteristics of different types of switches; 4) performing fault isolation by adopting different switch action modes according to different areas where internal fault points are located during isolated island operation of the micro-grid; and 5) adopting a sequential Monte Carlo simulation method to evaluate the operation reliability of the microgrid containing the electric vehicle charging station. Compared with the prior art, the micro-grid reliability evaluation method conforms to the development trend that the electric vehicle charging station is connected into a power grid at the present stage and in the future, and is comprehensive in consideration and wide in application.

Description

technical field [0001] The invention relates to the field of distribution network planning, in particular to a method for evaluating the reliability of a micro-grid with electric vehicle charging stations. Background technique [0002] With the rapid development of the economy and society, in recent years, electric vehicles have replaced petroleum with electricity as their main power source, and have been vigorously developed due to the characteristics of no carbon emissions and environmental friendliness. As a new type of electric load, electric vehicles will definitely have a huge impact on the safety, stability and economy of the power distribution system if they are charged out of order on a large scale. Especially charging during the peak load period of the grid will cause the peak of the power load to increase, which increases the power supply burden and operation risk of the system. [0003] Therefore, it is necessary to conduct analysis and research on different typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F17/50H02J3/38
CPCG06Q10/0639G06Q50/06H02J3/38G06F30/20H02J3/388
Inventor 范宏陈龙超袁宏道郭翔
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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