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Static risk assessment method for power grid in severe weather

A bad weather and risk assessment technology, applied in the direction of instruments, data processing applications, forecasting, etc., can solve the problem of no power grid failure probability calculation model, and achieve the effect of reducing failure losses

Active Publication Date: 2013-09-04
STATE GRID CORP OF CHINA +2
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] However, in the current research on the static security risk assessment of the power grid, there is no specific calculation model for the grid failure probability caused by severe weather factors, and the corresponding static security risk assessment method for the power grid under severe weather

Method used

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  • Static risk assessment method for power grid in severe weather
  • Static risk assessment method for power grid in severe weather
  • Static risk assessment method for power grid in severe weather

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] Such as figure 1 Shown, the present invention comprises the following steps:

[0028] A: Select the power grid to be evaluated, and obtain the topological connection relationship, structural parameters, load parameters and average failure rate under historical severe weather of the power grid to be evaluated, and then proceed to step B;

[0029] B: Perform power flow calculation on the power grid to be evaluated to obtain the state and power flow distribution of the system under normal conditions, and then enter step C;

[0030] C: Carry out the expected fault selection under bad weather, and calculate the probability of the fault caused by the bad weather, and then go to step D;

[0031] D: Carry out power flow calculation under the selected expected fault, and then enter step E:

[0032] E: Determine whether the result of the power flow calculation under the expected fault is convergent, if the power flow is converged, go to step H; if the power flow does not conver...

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Abstract

The invention discloses a static risk assessment method for a power grid in severe weather. The probability of failures of the power grid and static safety risks caused by the failures in the severe weather can be analyzed, and support is provided for the discovery of potential risks of the power grid in the severe weather and the advanced reduction of operation risks and failure loss of the power grid. According to the method, the probability and the seriousness of the failures caused by the severe weather are taken into comprehensive account, a disclosed static safety index can be used for the static safety risk assessment of the power grid in the severe weather in different regions, an effective analysis tool for finding weak links of the power grid in static safety in the severe weather, and favorable support for the early-warning of the failures in the severe weather can be provided, and the failure loss, caused by the severe weather, of the power grid can be reduced.

Description

technical field [0001] The invention relates to a safety risk assessment method of a power system, in particular to a static risk assessment method of a power grid under bad weather. Background technique [0002] The electric power industry is the lifeblood of the national economy, and the stable and efficient operation of the power grid is an important guarantee for social development and the normal production and life of the people. Therefore, if a major accident occurs in the power system and the stability of the power grid is destroyed, it will inevitably bring huge economic losses to the entire society. Historical statistics show that severe weather has a huge impact on power grid failures, and severe weather has always threatened the power supply security of the power grid. With the warming of the global climate and abnormal circulation, severe weather around the world is becoming more and more frequent, which brings new and greater challenges to the safe operation of...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
Inventor 石光杨海晶韩伟邱武斌孔圣立刘磊马瑞李凯
Owner STATE GRID CORP OF CHINA
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