Power system transient risk evaluation method taking natural disasters into consideration

A natural disaster and power system technology, applied in the field of evaluation, can solve problems such as component damage, a large number of transmission lines, and time-consuming stabilization calculations

Inactive Publication Date: 2016-07-13
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

In addition, most risk assessments use non-sequential Monte Carlo simulation method, that is, the use of uniformly distributed random numbers on [0, 1] and the comparison of damage probability to determine the damage state of components; while the risk assessment of the actual power grid mostly uses analytical How

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  • Power system transient risk evaluation method taking natural disasters into consideration
  • Power system transient risk evaluation method taking natural disasters into consideration
  • Power system transient risk evaluation method taking natural disasters into consideration

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[0060] The present invention will be further described in detail below in conjunction with the drawings.

[0061] The present invention provides a power system transient risk assessment method considering natural disasters, (such as figure 1 ) The method includes the following steps:

[0062] Step 1: Determine the probability of component damage considering natural disasters;

[0063] Step 2: Determine the preliminary fault set and classify it;

[0064] Step 3: Conduct transient risk assessment of the power system.

[0065] The step 1 specifically includes the following steps:

[0066] Step 1-1: Divide natural disasters into Type I natural disasters and Type II natural disasters;

[0067] Step 1-2: Determine the probability of component damage considering Type I natural disasters and Type II natural disasters respectively.

[0068] In the step 1-1, Type I natural disasters include typhoons, icing and earthquakes;

[0069] Type II natural disasters include heavy rain, thunder and lightning ...

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Abstract

The invention provides a power system transient risk evaluation method taking natural disasters into consideration. The method comprises the following steps: determining element damage probabilities when the natural disasters are considered; determining preliminary fault sets, and classifying the preliminary fault sets; and carrying out transient risk evaluation on a power system. According to the invention, the disasters in a region are classified, multiple disaster faults in the region can be comprehensively considered, the element probabilities can be more accurate, the severity of random combination faults can be rapidly calculated, important faults are prevented from being neglected due to a restriction of a calculation amount, and the method can be applied to an actual power grid and facilitates solution of actual problems.

Description

technical field [0001] The invention relates to an assessment method, in particular to a transient risk assessment method of a power system considering natural disasters. Background technique [0002] Although natural disasters are low-probability events, they do great harm to the power system and can easily cause large-scale power outages. Power grid planning is the prerequisite for safe operation of the power system. To prevent major damage to the system caused by natural disasters, it is necessary to consider the impact of natural disasters in the process of power grid planning. At present, the power system transient risk assessment has not yet been combined with the actual power grid analysis software, and the analysis results are used to guide the power grid planning stage. [0003] In the process of power grid planning, considering as many disaster factors as possible can make the grid planning results more accurate, so as to avoid possible disaster damage to the powe...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
Inventor 贺海磊郭剑波周勤勇张彦涛韩家辉
Owner CHINA ELECTRIC POWER RES INST
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