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Integer linear programming based method and system for restoration and partition of multi-DC feed-in power grid

An integer linear programming and multi-DC feed-in technology is applied in the direction of AC network circuits, power transmission AC networks, information technology support systems, etc. It can solve the problems of DC system start-up conditions considerations and modeling difficulties, so as to reduce the difficulty of establishment, The effect of simplifying the solution and improving the calculation speed

Active Publication Date: 2022-02-11
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Integer linear programming based method and system for restoration and partition of multi-DC feed-in power grid
  • Integer linear programming based method and system for restoration and partition of multi-DC feed-in power grid
  • Integer linear programming based method and system for restoration and partition of multi-DC feed-in power grid

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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

This disclosure proposes a method and system for recovering partitions of multiple DC feed-in grids based on integer linear programming. First, the short-circuit capacity condition of DC startup is ignored, and the preliminary partition results are obtained. Then, the partitions containing DC drop points are searched and merged with other partitions to achieve DC start condition and provides a parallel order of partitions during recovery. At the same time, under the premise of ensuring the calculation time, multiple suboptimal solutions are obtained by adding cut constraints to provide more choices for partition decision-making. The model and algorithm provided by this embodiment have a relatively high advantage in short calculation time, can quickly restore power supply, and can reflect the characteristics of the community structure of the power network, and can realize the overall control of the divided area.

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 Patents(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