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Safety and stability analysis method for power grid

A stable analysis and power grid security technology, applied in data processing applications, system integration technology, instruments, etc., can solve problems such as inaccurate risk analysis and evaluation, unfavorable operation and maintenance, etc., to achieve good analysis and evaluation, improve safe operation, analysis good effect

Active Publication Date: 2015-04-29
STATE GRID CORP OF CHINA +5
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for analyzing the safety and stability of the power grid, which can solve the defects caused by the inaccurate risk analysis and evaluation of the existing power grid, which is not conducive to operation and maintenance, etc.

Method used

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  • Safety and stability analysis method for power grid
  • Safety and stability analysis method for power grid
  • Safety and stability analysis method for power grid

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Embodiment Construction

[0017] A method for analyzing power grid security and stability, comprising the following steps in sequence:

[0018] a) Calculation of sensitivity: use the sensitivity calculation method to display the power flow change in the power grid;

[0019] b) Analysis of risk results: According to the sensitivity and risk results calculated in step a), the topology and power flow calculations of the power grid are carried out, and the exchange power of each supply area is taken as the research object, combined with the hot reserve capacity of the power grid in the area, and steady-state cascading failures are considered , study the potential hidden dangers of the power grid, combine the failure probability of a single device given by the accident probability analysis, screen out the fault sets under each accident level, study the causes of the power grid accidents, find out the risk sources of the power grid, and calculate each risk source value at risk;

[0020] c) Risk prevention a...

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Abstract

The invention relates to a safety and stability analysis method for a power grid. The method comprises steps as follows: sensitivity calculation, risk result analysis, risk prevention and control and risk rating. The safety and stability analysis method has the advantages as follows: with adoption of the analysis method, all sets of failure equipment are sequenced through sensitivity calculation, a risk value of each risk source is given out, risk prevention and control are performed, the risk grade is given out according to regulations, and an important basis is provided for safety and stability analysis of the regional power grid; compared with a conventional analysis method, the analysis result is good, risks of the power grid can be well analyzed and assessed, risk rating by an operator and operation overhaul by the operator are facilitated, and the safety operation of the power grid is improved.

Description

technical field [0001] The invention relates to a method for analyzing the safety and stability of a power grid. Background technique [0002] In some areas, there are many hydropower points in the power grid and the quality of power equipment is uneven, which puts forward great requirements for the safe and stable operation of the power grid. Therefore, it is necessary to analyze the safety and stability of the regional power grid and carry out risk prevention and control. Analysis by simple analysis methods is poor, and the risks of the power grid cannot be analyzed and evaluated well. It is not conducive to the operators to rate the risks, and it is not conducive to the operators to perform operation and maintenance, and the safety performance is low. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for analyzing the safety and stability of the power grid, which can solve the defects caused by inaccura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06Y02E40/70Y04S10/50
Inventor 孙维真岳平王超张静张周麟朱培红张磊胡洪涛周苗菲杨承河蔡轼孙景钌任娴婷吴昌王栋刘明康
Owner STATE GRID CORP OF CHINA
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