Multi-direct-current feed-in power grid partition recovery method and system based on integer linear programming

An integer linear programming and multi-DC feed-in technology is applied to AC network circuits, power transmission AC networks, and information technology support systems. The effect of establishing difficulty and reducing the difficulty of solving

Active Publication Date: 2020-11-20
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the analytical relationship between short-circuit capacity and zoning decision variables such as lines and buses is highly nonlinear, and modeling is very difficult. Therefore, it is not easy to take the start-up conditions of the DC system into consideration when modeling zoning strategies

Method used

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  • Multi-direct-current feed-in power grid partition recovery method and system based on integer linear programming
  • Multi-direct-current feed-in power grid partition recovery method and system based on integer linear programming
  • Multi-direct-current feed-in power grid partition recovery method and system based on integer linear programming

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Embodiment 1

[0031] In the technical solutions disclosed in one or more embodiments, such as figure 1 As shown, the multi-DC infeed power grid restoration partition method based on integer linear programming includes the following steps:

[0032] S1: Obtain the power grid data of the power outage grid;

[0033] S2: The grid data is transmitted to the integer linear programming model of multiple DC feed grid partitions, and the planning solution is performed to obtain preliminary partition results; the constraints of the integer linear programming model do not consider the short-circuit capacity constraints of DC startup;

[0034] S3: check the short-circuit capacity of the partition containing the DC drop point in the partition result, and judge whether the short-circuit capacity of the partition meets the DC start-up condition;

[0035] S4: For the partition that meets the starting condition, start the partition directly; for the partition that does not meet the starting condition, merge...

Embodiment 2

[0097] This embodiment provides an integer linear programming-based multi-DC feeding power grid recovery partition system, including:

[0098] Preliminary zoning module: configured to transmit the obtained power outage grid data to an integer linear programming model of multi-DC feeding grid zoning, and perform planning solution to obtain preliminary zoning results; the constraints of the integer linear programming model do not consider the DC start short-circuit capacity constraints;

[0099] Judgment module: configured to verify the short-circuit capacity of the partition containing the DC drop point in the partition result, and judge whether the short-circuit capacity of the partition meets the DC start-up condition;

[0100] The control startup module is configured to directly start the partition for the partition that meets the startup condition; for the partition that does not meet the startup condition, merge the partition with the adjacent partition until the DC startu...

Embodiment 3

[0102] This embodiment provides an electronic device, including a memory, a processor, and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, the steps described in the method in Embodiment 1 are completed.

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Abstract

The invention provides a multi-direct-current feed-in power grid partition recovery method and system based on integer linear programming. Firstly, the short-circuit capacity condition of direct-current starting is ignored, a preliminary partition result is obtained, then partitions containing direct-current falling points are searched for and combined with other partitions to meet the direct-current starting condition, and the parallel sequence of the partitions in the recovery process is provided. Meanwhile, on the premise of ensuring the calculation time, a plurality of suboptimal solutionsare obtained by adding cut constraints, so that more choices are provided for partition decision making. The model and the algorithm provided by the embodiment of the invention have the advantages ofshort calculation time, capability of quickly recovering power supply, higher advantages, capability of reflecting community structure characteristics of a power network and capability of realizing integral control of divided regions.

Description

technical field [0001] The present disclosure relates to the related technical field of direct current transmission control, and in particular relates to a method and system for recovering partitions of multi-direct current feed-in grids based on integer linear programming. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] At present, the power grid generally leaves the DC system to start after the restoration of the main grid frame of the system is completed when formulating the recovery plan, which makes the recovery process after the blackout slow and cannot meet the power supply demand. The DC system has the advantage of fast power increase, which can provide strong power support for load recovery in the power grid after a major blackout. [0004] At present, the following problems exist in the recovery of multiple DC feed-in receivin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36H02J3/00
CPCH02J3/36H02J3/001H02J2203/20Y04S10/52Y02E60/60
Inventor 王洪涛梁坤杰李常刚杨冬马欢赵康
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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