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Energy storage capacity configuration method, device and system of AC-DC hybrid power grid

A technology of AC-DC hybrid connection and energy storage capacity, which is applied in the direction of circuit devices, AC network circuits, AC network load balancing, etc. It can solve the situation that the AC-DC hybrid grid planning is not considered, and the unreasonable AC-DC hybrid grid cannot be solved. Problems such as the waste of energy storage resources are allocated to achieve the effect of improving the rationality of allocation

Pending Publication Date: 2022-01-04
GUANGDONG POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing technology still has the following defects: 1. The planning situation of the AC-DC hybrid grid is not considered, and it is impossible to solve the problem that the AC-DC hybrid grid is difficult to rationally allocate energy storage and cause waste of resources; 2. For the AC-DC hybrid grid According to the planning of different output and load conditions, energy storage capacity allocation is not carried out

Method used

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  • Energy storage capacity configuration method, device and system of AC-DC hybrid power grid
  • Energy storage capacity configuration method, device and system of AC-DC hybrid power grid
  • Energy storage capacity configuration method, device and system of AC-DC hybrid power grid

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specific Embodiment 1

[0025] The embodiment of the present invention first provides an embodiment of an energy storage capacity configuration method for an AC / DC hybrid power grid. figure 1 A flowchart of an embodiment of an energy storage capacity configuration method for an AC / DC hybrid grid according to the present invention is shown. like figure 1 As shown, the method includes the following steps:

[0026] S1: Obtain the construction parameter group, wind power output annual data group and load annual data group of the AC / DC hybrid power grid.

[0027] Among them, the construction parameter group of the AC / DC hybrid power grid is a preset parameter group, and the construction parameter group includes the preset number of representative scenarios. . In one embodiment, the construction parameter group also includes: system rated voltage, node voltage allowable fluctuation range, thermal power assembly capacity, coal consumption coefficient, minimum continuous running time T on , the minimum c...

specific Embodiment 2

[0103] In addition to the above method, the embodiment of the present invention also provides an embodiment of an energy storage capacity configuration device for an AC / DC hybrid grid. figure 2 A structural diagram of an embodiment of an energy storage capacity configuration device for an AC / DC hybrid grid according to the present invention is shown.

[0104] like figure 2 As shown, the energy storage capacity configuration device includes a data acquisition unit 11, a model building unit 12, a scenario reduction unit 13 and an optimization configuration unit 14.

[0105] The data acquisition unit 11 is used to acquire the construction parameter set of the AC / DC hybrid power grid, the annual wind power output data set and the annual load data set. Wherein, the construction parameter group includes a preset number of representative scenes.

[0106] The model building unit 12 is used to build an energy storage capacity optimization configuration model according to the constr...

specific Embodiment 3

[0112]In addition to the above method and device, an embodiment of the present invention also provides an embodiment of an energy storage capacity configuration system for an AC / DC hybrid power grid. image 3 A structural diagram of an embodiment of an energy storage capacity configuration system for an AC / DC hybrid grid according to the present invention is shown.

[0113] like image 3 As shown, the energy storage capacity configuration system includes an energy storage capacity configuration device 1 for an AC / DC hybrid grid, a historical database 2 and an AC / DC hybrid grid 3, the energy storage capacity configuration device 1, the historical database 2 and the The AC / DC hybrid power grids 3 are communicatively connected to each other.

[0114] The AC / DC hybrid power grid 3 includes thermal power units, wind power units, energy storage devices, AC lines, DC lines and VSC devices. Users can configure the energy storage capacity of the AC / DC hybrid grid according to thermal...

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Abstract

The invention discloses an energy storage capacity configuration method, device and system of an AC-DC hybrid power grid. The device comprises a data acquisition unit, a model establishment unit, a scene reduction unit and an optimal configuration unit. The system comprises an energy storage capacity configuration device of the AC-DC hybrid power grid, a historical database and the AC-DC hybrid power grid. A DC power grid constraint condition group and an AC power grid constraint condition group are used for constraining an established energy storage capacity optimal configuration model, and a plurality of representative day scenes are used for representing different wind power output and load conditions respectively, so that the lowest cost under different representative scenes is calculated; according to the energy storage capacity configuration method, device and system, the planning situation of the AC-DC hybrid power grid is considered, and energy storage capacity configuration is performed according to different output and load situations, so that the configuration reasonability of the energy storage capacity of theAC-DC hybrid power grid is improved.

Description

technical field [0001] The present invention relates to the field of energy storage capacity configuration of an AC / DC hybrid power grid, and relates to a method, device and system for configuring an energy storage capacity of an AC / DC hybrid power grid. Background technique [0002] With the development of grid-connected new energy power generation and related technologies, a new type of power system with new energy as the main body will gradually form in the future, and the intermittent and uncertain output of new energy will bring huge impacts on the safe and stable operation of the power system. challenge. The construction of energy storage power stations for the new power system with new energy as the main body can promote the consumption of new energy and improve the reliability of system operation. Therefore, it is of great significance to study the energy storage allocation method of the new power system with new energy as the main body, to rationally allocate energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J5/00H02J3/32H02J3/46H02J3/48H02J3/50
CPCH02J5/00H02J3/32H02J3/466H02J3/48H02J3/50H02J2203/20Y02E10/76Y02E70/30
Inventor 彭穗龚贤夫卢洵刘新苗彭虹桥陈鸿琳万昱娴李明杨吴云芸薛熙臻艾小猛
Owner GUANGDONG POWER GRID CO LTD
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