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Load recovery two-stage optimization method considering wind power connection

A load restoration and optimization method technology, applied in wind power generation, electrical components, circuit devices, etc., can solve problems such as large scale, orderly access of wind power and shortened load restoration time

Inactive Publication Date: 2018-09-04
JIANGSU ELECTRIC POWER CO +2
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Problems solved by technology

[0004] The purpose of the present invention is to obtain an effective decision-making scheme for load restoration, and proposes a two-stage optimization method for load restoration considering wind power access, which realizes the orderly access of wind power and shortens the load restoration time, and solves the problem of large-scale system Technical issues of load restoration decision-making under the condition of wind power system participating in load restoration

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  • Load recovery two-stage optimization method considering wind power connection
  • Load recovery two-stage optimization method considering wind power connection
  • Load recovery two-stage optimization method considering wind power connection

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Embodiment Construction

[0059] The technical solutions of the present invention will be further elaborated below according to the drawings and in conjunction with the embodiments.

[0060] figure 1 is a decoupling schematic diagram of the load restoration problem; figure 2 Calculation flow chart of the two-stage optimization method for load restoration considering wind power access; a two-stage load restoration optimization method considering wind power access, based on the time-step decision-making idea, the load restoration problem involving wind power is solved in two stages coupling, including the following steps:

[0061] Step 1: Preselect the load nodes to be restored according to the system frequency security constraints, and determine the weight of the load nodes to be restored;

[0062] Step 101: Pre-select a set of load nodes to be restored according to the system frequency security constraints, and when pre-selecting the load nodes to be restored, satisfy:

[0063]

[0064] Among th...

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Abstract

The invention discloses a load recovery two-stage optimization method considering wind power connection and used for researching a load recovery decision problem with wind power participation. Firstly, a single time-stepping load recovery problem is subjected to two-stage decoupling, wherein in the first stage, by taking the sum of a weighting load and a wind power output recovery value as the maximum target, a load recovery 0-1 planning model is established; next, in the second stage, by taking the shortest recovery time consumption as the target and by taking the decision variable obtained from the first stage as the initial condition, an alternating current power flow-based nonlinear planning model is established; and finally, each time stepping is solved in sequence to obtain a recovery decision scheme in the full process. By virtue of different time stepping decision idea, an effective recovery decision scheme can be obtained, wind power sequential access is realized and load recovery time consumption is shortened, so that the technical problems in load recovery decision in conditions of relatively large system scale and wind power system participation can be solved.

Description

technical field [0001] The invention belongs to the technical field of power system restoration, and relates to a two-stage optimization method for load restoration considering wind power access. Background technique [0002] After a large-scale blackout occurs in the power system, taking appropriate power grid recovery control will help reduce the economic loss and social impact caused by large-scale blackouts. In recent years, large-scale grid integration of renewable energy such as wind power has had a certain impact on the orderly restoration of the power grid. On the one hand, randomness, intermittent characteristics and disorderly access will increase the difficulty and risk of system restoration; On the one hand, an appropriate proportion of wind power access can help shorten the overall system recovery time and speed up the system recovery process. Therefore, it is of great significance to study how to restore the system quickly, safely and effectively when wind pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/48
CPCH02J3/00H02J3/386H02J3/48H02J2203/20Y02E10/76
Inventor 仇晨光程锦闽柳志航卫志农臧海祥李新家李平王成亮
Owner JIANGSU ELECTRIC POWER CO
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