Method for determining distribution point of newly-added black-start unit

A technology of black start and unit, applied in the field of power system, can solve the problem of lack of means and methods of quantitative analysis, and achieve the effect of scientific and reasonable selection of distribution points and reasonable calculation results

Active Publication Date: 2020-01-10
STATE GRID SHANDONG ELECTRIC POWER COMPANY WEIFANG POWER SUPPLY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the recovery speed of the system after a power outage, it is necessary to add black start units to the system, but the research on the placement of new black start units is still in its infancy, and most of them rely on operating experience to determine the placement of new black start units. Analytical means and methods

Method used

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  • Method for determining distribution point of newly-added black-start unit
  • Method for determining distribution point of newly-added black-start unit
  • Method for determining distribution point of newly-added black-start unit

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Embodiment Construction

[0019] Attached below figure 1 , attached figure 2 The present invention will be further described.

[0020] A method for determining the layout of newly added black-start units, comprising the following steps:

[0021] a) Analyze the network structure of the power grid, obtain all power plants with available black-start units in the system, and the number and capacity of available black-start units contained in the power plant and the start-up sequence of each black-start unit, and establish the system based on the obtained data. The corresponding weighted network connection matrix M, where

[0022] The weighted network matrix M is a square matrix, and the number of rows and columns is equal to the number of power plant nodes in the system with available black-start units. When there is an available connection line l between node i and node j in the system ij , and line l ij The per-unit value of the line reactance of x ij , then connect the elements M in the matrix M...

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Abstract

The invention discloses a method for determining the distribution point of a newly-added black-start unit, which provides a quantitative calculation means for determining the distribution points of the black-start unit and enables the distribution point selection to be more scientific and reasonable. Indexes of the power grid strength are provided to evaluate the influence of the black-start unitand the grid structure on the capability of recovering to the original state after the power grid is greatly disturbed, and a means is provided for quantitatively analyzing the benefits of the newly added black-start unit. According to the method provided by the invention for determining the distribution point of the newly-added black-start unit, the economic factor is considered, that is, the factor that the investment required by the newly-added black-start units at different stations is different is considered, so that the calculation result is more reasonable.

Description

technical field [0001] The invention relates to the field of electric power systems, in particular to a method for determining the layout of newly added black-start units. Background technique [0002] With the rapid development of economy and society, the installed capacity and load of the power system are constantly reaching new highs; and the rapid development of UHV AC and DC transmission, large-scale wind power generation, photovoltaic power generation and a large number of microgrids are connected to the grid, the dynamic characteristics of the entire power system are Great changes have taken place, and the operating point of the power system is getting closer and closer to its stability limit. In this case, there is an increasing risk of a system blackout due to power failure or improper operation. For example, on August 14, 2003, the most serious blackout accident in the history of North America occurred. The blackout accident affected many areas in the United State...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38
CPCH02J3/38
Inventor 朱海南王娟娟于振江王涛王琰胡丽卢晓惠王雪松张帆周玉刘明刘堃陈兵兵李宗璇宋静薛云霞房巍隋敏
Owner STATE GRID SHANDONG ELECTRIC POWER COMPANY WEIFANG POWER SUPPLY
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