Off-grid type microgrid reliability evaluation method considering ordered charge and discharge of electric vehicles

A technology for electric vehicles and microgrids, applied in electrical components, circuit devices, AC network circuits, etc.

Inactive Publication Date: 2019-05-03
CHONGQING UNIV
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Problems solved by technology

[0003] For the impact of the access of electric vehicles on the reliability of the off-grid microgrid, there is no literature related to this aspect of the solution, so it is necessary to propose a solution to solve the problems caused by the access of electric vehicles

Method used

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  • Off-grid type microgrid reliability evaluation method considering ordered charge and discharge of electric vehicles
  • Off-grid type microgrid reliability evaluation method considering ordered charge and discharge of electric vehicles
  • Off-grid type microgrid reliability evaluation method considering ordered charge and discharge of electric vehicles

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Embodiment Construction

[0152] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0153] An off-grid microgrid reliability evaluation method considering the orderly charging and discharging of electric vehicles, combined with figure 1 As can be seen, the following steps are involved:

[0154] S1. Construct an off-grid micro-grid system including orderly charging and discharging of electric vehicles, combined with image 3 It can be seen that , and an electric load optimization model for orderly charging and discharging of electric vehicles in the off-grid microgrid system is established;

[0155] And obtain the electric load data of orderly charging and discharging of electric vehicles, the output data of new energy systems and the output data of diesel generator sets when all components in the off-grid micro-grid system are in a normal state;

[0156] The objective function of...

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Abstract

The invention discloses an off-grid type microgrid reliability evaluation method considering ordered charge and discharge of electric vehicles. The off-grid type microgrid reliability evaluation method comprises the steps of: S1, constructing an off-grid type microgrid containing ordered charge and discharge of the electric vehicles; S2, detecting transition conditions of all element states in a microgrid during the total simulation time to obtain a microgrid system state transition process; S3, performing optimization processing on an electrical load optimization model according to the microgrid system state transition condition in the Day-th day, solving the optimized electrical load optimization model, recording microgrid system state transition data in the Day-th day, and updating element states of the microgrid system in the next day; S4, and judging whether the total simulation time is reached, and if so, outputting a reliability index, otherwise, returning to the step S3. The off-grid type microgrid reliability evaluation method has the beneficial effect that the model is solved by calling GUROBI, is convenient for engineering personnel to learn and use, has good universality and can be widely applied.

Description

technical field [0001] The invention belongs to the technical field of power system reliability evaluation methods, and in particular relates to an off-grid micro-grid reliability evaluation method that takes into account the orderly charging and discharging of electric vehicles. Background technique [0002] my country's policy support in recent years has led to the rapid development of electric vehicles, and the impact of a large number of electric vehicles on the grid has begun to become prominent. At present, the research focus of scholars is to consider the influence of the access of distributed energy and electric vehicles on the reliability of distribution network, and there is not much research on the reliability of off-grid operation microgrid. With the increasing penetration of distributed energy and electric vehicles connected to microgrids, it is necessary to conduct research on the reliability of microgrids. Especially when the microgrid is running off-grid, ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/28H02J3/46H02J3/38
Inventor 胡博谢开贵郝钰周家浩伏坚曹茂森孔得壮
Owner CHONGQING UNIV
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