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Double-terminal DC asynchronous interconnection grid frequency coordination control method and device

A DC asynchronous, interconnected power grid technology, applied in the direction of DC network circuit devices, circuit devices, electrical components, etc., can solve the problems of losing the advantages of grid interconnection, and the power grid cannot exert power mutual support.

Active Publication Date: 2020-12-18
CHINA SOUTHERN POWER GRID COMPANY
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Problems solved by technology

One of the advantages of DC asynchronous interconnection is that it can isolate disturbances, but the disadvantage is that if no appropriate control strategy is adopted, the power grids will not be able to support each other, and the advantages of grid interconnection will be lost.

Method used

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  • Double-terminal DC asynchronous interconnection grid frequency coordination control method and device
  • Double-terminal DC asynchronous interconnection grid frequency coordination control method and device
  • Double-terminal DC asynchronous interconnection grid frequency coordination control method and device

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] The embodiment of the present invention proposes a double-terminal DC asynchronous interconnection grid frequency coordination control method, see figure 1 , the method includes: 101. For any grid, according to the additional power and the DC power set value of the normal dispatch plan, determine the DC power set value from any grid to othe...

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Abstract

Embodiments of the present invention provide a double-terminal DC asynchronous interconnection grid frequency coordination control method and device, which belong to the technical field of power system analysis. Including: For any grid, according to the additional power and the DC power set value of the normal dispatch plan, determine the DC power set value from any grid to other grids, and perform DC additional frequency control; according to the frequency difference integration of any grid , determine any automatic power generation control mode of the power grid and calculate the regional control deviation of the power grid, and execute the automatic power generation control of the power grid. Since the DC additional frequency control can be used first to provide mutual power support in emergency situations, and then through the automatic power generation control of each grid, the frequency and DC power of each grid can be automatically restored under normal circumstances, so that through DC additional frequency control and grid automatic generation control In order to realize the coordinated control of the frequency of each power grid.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of power system analysis, and in particular to a frequency coordination control method and device for a double-terminal DC asynchronous interconnection grid. Background technique [0002] Asynchronous interconnection between multiple power grids through multiple double-ended DC (that is, point-to-point DC) is an important form of power grid. One of the advantages of DC asynchronous interconnection is that it can isolate disturbances, but the disadvantage is that if no appropriate control strategy is adopted, the power grids will not be able to support each other, and the advantages of grid interconnection will be lost. Therefore, the frequency coordinated control of the DC asynchronous interconnected grid should be independent during normal operation and support each other in emergency situations. In order to achieve mutual support, it is necessary to add frequency coordination control...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J1/00
CPCH02J1/00H02J1/082
Inventor 陈磊陈亦平曹其鹏张勇陈锦洲刘映尚闵勇唐卓尧徐飞吴问足胡伟高琴杨荣照李慧勇
Owner CHINA SOUTHERN POWER GRID COMPANY
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