Multi-period optimization reconstruction method of active power distribution network comprising electric automobiles

An active distribution network and electric vehicle technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., to achieve the effect of strengthening global optimization capabilities, improving operating performance, and avoiding troubles

Active Publication Date: 2017-04-26
宜昌特锐德电气有限公司
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Problems solved by technology

[0004] In order to improve the impact of disorderly charging of electric vehicles connected to the distribution network, some scholars have proposed a smart charging method. Although the smart charging method has improved the stable operation of the distribution network, it requires a large number of electric vehicle owners to participate in the power grid company. The unified dispatching of the distribution network has certain difficulties in practice, and the distribution network reconfiguration is to reduce the network loss, improve the voltage quality, balance the load, etc. by switching the switch state, so as to realize the stable operation of the distribution system. Improve system operation status through network reconfiguration when electric vehicles are charged out of order

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  • Multi-period optimization reconstruction method of active power distribution network comprising electric automobiles
  • Multi-period optimization reconstruction method of active power distribution network comprising electric automobiles
  • Multi-period optimization reconstruction method of active power distribution network comprising electric automobiles

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Embodiment Construction

[0043] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0044] A method for multi-period optimization and reconstruction of an active distribution network including electric vehicles, comprising the following steps:

[0045] (1): Determine the objective function of the multi-objective optimization and reconstruction of the active distribution network, including the minimum active network loss, the minimum voltage offset and the minimum number of switching times, specifically:

[0046]

[0047]

[0048]

[0049] Among them: N is the total number of branches of the system; k i is the switch switching state of branch i, which takes the value of 0 or 1 (open or closed); P i , Q i Represent the active power and reactive power of the branch respectively; U i is the head-end bus voltage of branch i; ΔT and Δt respectively represent the EV charging time period and the standard time period fo...

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Abstract

The invention discloses a multi-period optimization reconstruction method of an active power distribution network comprising electric automobiles. Particle positions are updated by use of a binary-system particle swarm algorithm, a global optimal solution is selected through a small niche technology, and an optimal comprise solution is selected by use of a fuzzy grade of membership decision-making method. The method has the following advantages: access of a distributed power source is taken into consideration, installation positions and capacities are determined according to network loss sensitivity, an electric automobile disordered charging mode and an intelligent charging mode are taken into consideration, after reconstruction, the network loss of the power distribution network is reduced, the voltage quality is improved, at the same time, distributed power output and power distribution of the electric automobiles during charging along with time are simulated, and the method is more suited to actual conditions.

Description

technical field [0001] The invention relates to the field of active distribution networks, in particular to a multi-period optimization and reconstruction method for an active distribution network including electric vehicles. Background technique [0002] In recent years, traditional energy sources have been increasingly depleted, and the increase in power demand is driving the power grid to develop in a sustainable manner, making the country gradually promote the construction of smart grids. On the side of the distribution network, the access of distributed power sources and electric vehicles The traditional distribution network has been difficult to cope with the increasing load. Therefore, the concept of active distribution network emerges spontaneously. The purpose is to reduce network loss and realize Reliable operation of the grid, etc. [0003] In order to meet the power demand of a large number of power loads, it is an indispensable link for distributed power genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F17/50
CPCG06F30/367H02J3/00H02J2203/20Y02E40/70
Inventor 张涛张东方徐雪琴
Owner 宜昌特锐德电气有限公司
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