Method for restoring sequence and path of unit and simultaneously performing optimization

A technology for restoring paths and units, which is applied in the directions of instruments, calculations, electrical digital data processing, etc., and can solve problems such as inability to obtain restoration solutions

Active Publication Date: 2013-09-04
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Decoupling the two and optimizing them separately cannot obtain a globally optimal recovery solution

Method used

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  • Method for restoring sequence and path of unit and simultaneously performing optimization
  • Method for restoring sequence and path of unit and simultaneously performing optimization
  • Method for restoring sequence and path of unit and simultaneously performing optimization

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Embodiment Construction

[0072] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0073] This paper simulates the actual system of the power grid in the west of Shandong Province, and illustrates the method flow for simultaneously optimizing the unit recovery sequence and unit recovery path. The structure diagram of the power grid in the western part of Shandong is as follows Figure 5 shown. Assuming that a major power outage occurs in Shandong Power Grid, according to the method of simultaneously optimizing the unit recovery sequence and unit recovery path, the specific steps are as follows:

[0074] S1: Obtain the data used for optimization calculation. Determine the power outage range of the system and identify the state of the system. Judging the availability of various equipment in the system, obtaining the start-up characteristics of the unit, and establishing the topological relationship matrix of the system.

[0075]The ...

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Abstract

The invention discloses a method for restoring sequence and path of a unit and simultaneously performing optimization. The method includes: 1) obtaining data required by optimization calculation; 2) confirming a black-start power source which is safe and reliable to operate, selecting a unit with proper capacity and around an important load to serve as a set of units to be restored; 3) building a multi-objective optimization mathematical model for optimizing unit restoring sequence and unit restoring path simultaneously by considering mutual influence of unit restoring sequence optimization and unit restoring path optimization, leading in DE-EDA for solving, and giving a plurality of Pareto optimized unit restoring sequences and unit restoring paths and putting sequence of lines in the path; 4) performing various safety verifications on obtained Pareto optimized restoring schemes by adopting a numerical simulation technology; 5) enabling decision makers to choose one scheme as a main restoring scheme from the verified Pareto optimized schemes, and using other schemes as backup restoring schemes.

Description

technical field [0001] The invention relates to a method for optimizing unit restoration, in particular to a method for simultaneously optimizing unit restoration sequence and path. Background technique [0002] Due to the rapid economic development, the social power consumption has increased sharply, the load and installed capacity of the power grid have continued to increase, and environmental issues and economic factors must be considered during the operation of the power grid, so that the operating point of the power grid is getting closer and closer to its safety limit point, which greatly Increased the complexity of grid operation and maintenance. Therefore, if the local failure of the system is not handled properly, it is very likely to cause a large-scale power outage in the system. For example, on August 14, 2003, a 345kV transmission line in Ohio, the United States, had a short-circuit fault. Due to improper handling of the fault, it caused a large-scale shift of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 刘玉田朱海南
Owner SHANDONG UNIV
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