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Risk evaluation method for power distribution network under typhoon disaster scene

A technology for risk assessment and distribution network, applied in the direction of instruments, data processing applications, climate sustainability, etc., can solve problems such as the difficulty of formulating security defense measures and the lack of hazards in the power sector

Inactive Publication Date: 2018-11-23
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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Problems solved by technology

Although the meteorological department can make accurate warnings before the typhoon lands, the power department usually lacks an accurate assessment of its hazards, and there are great difficulties in formulating safety and defense measures

Method used

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  • Risk evaluation method for power distribution network under typhoon disaster scene
  • Risk evaluation method for power distribution network under typhoon disaster scene
  • Risk evaluation method for power distribution network under typhoon disaster scene

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Embodiment Construction

[0067] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0068] Please refer to figure 1 , the present invention provides a distribution network risk assessment method in a typhoon disaster scenario, characterized in that: comprising the following steps:

[0069] Step S1: set up typhoon wind speed model, be used for calculating the wind speed of each point in the typhoon wind field;

[0070] Step S2: set up the pole load calculation model for calculating the pole load and the bending moment of any section;

[0071] Step S3: set up the corrected electric pole failure rate model, obtain the corrected electric pole failure rate;

[0072] Step S4: Calculate the distribution network risk index under the typhoon disaster according to the typhoon wind speed model, the pole load calculation model and the pole failure rate calculation and correction model.

[0073] Further, the step S1 is specifically:

[0074] St...

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Abstract

The invention relates to a risk evaluation method for power distribution network under typhoon disaster scene. The risk evaluation method for power distribution network in typhoon disaster scene is characterized by comprising the steps of: step S1: establishing a typhoon wind speed model, used for calculating the wind speed of each point in the typhoon wind field; step S2: establishing an electricpole load calculation model, used for calculating the electric pole load and bending moment of any cross section; step S3: establishing a corrected electric pole failure rate model to obtain a corrected electric pole failure rate; step S4: calculating a risk index of the power distribution network under typhoon disaster, based on the typhoon wind speed model, the electric pole load calculation model, and the electric pole failure rate calculation and correction model. According to the risk evaluation method for power distribution network under typhoon disaster scene, the interaction mechanismof the typhoon disaster and the electric pole of the power distribution network and the influence of the mechanism on the operation risk of the power distribution network can be characterized in detail, and the risk on the typhoon disaster distribution network is early warned and assessed.

Description

technical field [0001] The invention relates to the field of analysis of distribution network operation modes, in particular to a distribution network risk assessment method in a typhoon disaster scenario. Background technique [0002] The frequent disastrous typhoon activities in coastal areas bring huge operational risks and economic losses to the power system. Because the wind speed of the typhoon greatly exceeded the design standard of the distribution network, the phenomenon of downed poles, broken poles, and disconnected wires of the medium-voltage distribution lines during the typhoon was very serious. According to statistics, most of the failures are caused by pole failures, and the probability of disconnection is very low. [0003] The current economy and society are increasingly dependent on the power system, and large-scale faults in the power grid will bring huge economic losses. Although the meteorological department can make accurate warnings before the typho...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06Y02A90/10
Inventor 殷自力张功林王晓辉
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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