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Method for calculating grid reconfiguration efficiency in power system restoration process

A power system restoration and grid reconfiguration technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as the lack of a grid reconfiguration evaluation method and a single optimization object.

Inactive Publication Date: 2017-12-15
国网(天津)综合能源服务有限公司 +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing research on grid reconfiguration focuses on a single optimization object, and there is no evaluation method for the whole process of grid reconfiguration

Method used

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  • Method for calculating grid reconfiguration efficiency in power system restoration process
  • Method for calculating grid reconfiguration efficiency in power system restoration process
  • Method for calculating grid reconfiguration efficiency in power system restoration process

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Embodiment Construction

[0033] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] A grid reconfiguration method efficiency calculation in the restoration process of a power system includes the following steps:

[0035] Step 1. Read the power system data after the blackout, including the status information of generator sets, routes, and loads.

[0036] Step 2. According to the reconfiguration scheme of the power system grid, calculate the cumulative generating capacity of the generating set side, which is used to evaluate the recovery efficiency of the generating set.

[0037] The generator output characteristics in the process of power system recovery is a time-varying process, and the generator output curve in the process of system recovery is as follows: figure 1 shown. According to the output characteristic curve of the generator, the present invention calculates the accumulative generating capacity of the genera...

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Abstract

The present invention relates to a method for calculating the grid reconfiguration efficiency in a power system restoration process. The technical features of the grid system include: reading the data of the power system after a large power outage; calculating the accumulated generation capacity of the generator set so that the capacity is used to evaluate a unit recovery efficiency; calculating the cumulative economic loss on the load side to evaluate the load recovery efficiency; normalizing and processing the cumulative generation capacity on the generating unit side and cumulative economic loss on the load side; using the linear summation method to process the normalized cumulative generation capacity and cumulative economy loss as the grid reconstruction efficiency; and according to the efficiency of different power system grid reconstruction schemes, selecting the appropriate grid reconstruction scheme. The method of the invention is reasonably designed and can make comprehensive and reasonable evaluations on different grid reconstruction schemes to provide a decision basis for power system recovery so as to be able to better guide the power system recovery process.

Description

technical field [0001] The invention belongs to the technical field of power system operation and control, in particular to a grid reconstruction efficiency calculation method in the power system recovery process. Background technique [0002] Restoration of the power system after a blackout is a long and complicated process. According to the different main optimization objects in different periods, the system recovery process is usually divided into three stages: black start, network structure reconstruction and load recovery. Among them, grid reconfiguration plays a connecting role in the restoration process of the power system. On the one hand, it is necessary to reasonably arrange the start-up mode of the unit, and on the other hand, it is also necessary to reasonably arrange the restoration sequence of the load nodes. [0003] For the research on network structure reconfiguration, the method of local object optimization is usually used, and the problem of network struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00
Inventor 陈彬王浩卢欣石枫吴明雷张超孙学文张凡郭晓丹隋淑慧杨延春刘裕德韩慎朝于波吴亮
Owner 国网(天津)综合能源服务有限公司
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