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Optimization method of AC/DC hybrid power system

A technology of AC-DC hybrid and optimization method, which is applied in the direction of AC-DC network circuit layout, AC network circuit, AC network load balancing, etc., and can solve problems such as the inability to meet the development needs of AC-DC hybrid power distribution system

Active Publication Date: 2019-08-02
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing planning and design methods cannot meet the development needs of AC-DC hybrid power distribution systems based on power electronic transformers

Method used

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  • Optimization method of AC/DC hybrid power system
  • Optimization method of AC/DC hybrid power system
  • Optimization method of AC/DC hybrid power system

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Embodiment Construction

[0073] Embodiments of the design method of the AC / DC hybrid power distribution system according to the present invention will be described below with reference to the accompanying drawings. Those skilled in the art would recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Also, in this specification, the drawings are not drawn to scale, and like reference numerals denote like parts.

[0074] Source load storage: the meaning of power supply, load, and energy storage. Correspondingly, the equipment includes power supply equipment, energy storage equipment, and load equipment.

[0075] figure 1 It is a schematic flowchart of the design method of the AC / DC hybrid power distribution system according to the embodiment of the present invention. Such as fig...

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Abstract

The invention relates to an optimization method of an AC / DC hybrid power system. The method comprises steps that a system is divided into an AC power supply region and a DC power supply region, according to access requirements, a power supply voltage level, power supply quality requirements, the reliability level and power supply power requirements of power supply regions are determined; the number of power electronic transformers required is determined based on the system regions and the number of system power sources, a system region power supply network structure is established, and preliminary design of the capacity of ports of the power electronic transformers is performed; a three-layer optimization model is established to optimize the system, the first layer is for optimization of the capacity of the ports of the power electronic transformers, the second layer is for optimization of network power supply paths, and the third layer is for optimization of power source-load-energy storage regions; iterative solution of the three-layer model is performed till iteration is over. The method is advantaged in that the method realizes coordinated planning of various sources, loads andstorage resources and the distribution network in the AC / DC hybrid power distribution system, and satisfies the system's multiple types of distributed power source and energy storage accesses, and application requirements of the power electronic transformers.

Description

technical field [0001] The invention relates to distribution network planning technology, in particular to an optimization method for an AC / DC hybrid power distribution system. Background technique [0002] Compared with traditional distribution transformers, power electronic transformers have power flow control capabilities and can customize the output voltage. Its application can have a profound impact on the shape and operation mode of the current distribution network. In the future, there will be a large number of distributed power sources, energy storage devices, and AC and DC loads in the distribution network, with different access requirements, and the uncertainty of the power flow in the distribution network will be greatly enhanced. The power electronic transformer will become the energy router of the future distribution network, which can provide customized access services for sources, loads, and storages, and at the same time improve the operation and control capa...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/46H02J3/32H02J3/06H02J4/00
CPCH02J3/382H02J3/46H02J3/32H02J3/06H02J4/00H02J2203/20
Inventor 程林田立亭江轶万宇翔齐宁黄强袁晓冬张宸宇
Owner TSINGHUA UNIV
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