An automatic assessment method for lightning protection risk of transmission lines

A transmission line and automatic evaluation technology, which is applied in the electric power field, can solve problems such as poor pertinence, large investment, and ineffective results, and achieve the effects of reducing the tripping rate of lightning strikes, reducing investment, and improving the ability to resist lightning damage

Active Publication Date: 2018-07-10
SHENZHEN POWER SUPPLY BUREAU
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AI Technical Summary

Problems solved by technology

[0005] One is the lack of foresight and guidance, and it is impossible to find the weak link of line lightning protection in advance and take measures;
[0006] The second is that the pertinence is not strong, with a certain degree of blindness, and often the investment is large but the effect is not obvious;
[0007] Third, the calculation of the lightning trip rate is obviously rough, and the calculation results lack accuracy

Method used

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  • An automatic assessment method for lightning protection risk of transmission lines
  • An automatic assessment method for lightning protection risk of transmission lines
  • An automatic assessment method for lightning protection risk of transmission lines

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Experimental program
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Embodiment 1

[0044] The method provided by Embodiment 1 includes:

[0045] Step 100, collect the parameters of typical towers and record the values ​​of the parameters, the parameters include lightning parameters, tower parameters, topography parameters, line parameters and ground lightning parameters;

[0046] Step 101, according to the parameters of a typical pole tower, establish a counterattack calculation model and a shielding calculation model; specifically, in the ATP Draw environment of the visual operation interface of the electromagnetic transient calculation program, respectively establish a lightning current double exponential wave model, a transmission line model, Tower wave impedance model and insulator flashover model to calculate the counterattack of typical towers.

[0047] Step 102, according to the parameters of the typical tower and the counterattack calculation model, calculate the counterattack trip rate n of the tower based on the electromagnetic transient calculatio...

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Abstract

The present invention provides an automatic assessment method for lightning damage protection risks of transmission lines, comprising: collecting parameters of typical towers and recording the values ​​of the parameters, the parameters including lightning parameters, tower parameters, topography parameters, line parameters and ground lightning parameters; According to the parameters of typical towers, the counterattack calculation model and the shielding calculation model are established; according to the parameters of the typical towers and the counterattack calculation model, the counterattack tripping rate n1 of the tower is calculated based on the electromagnetic transient calculation program; based on the pilot development model, the calculation of the The shielding tripping rate n1=NgP1η of the pole tower; according to the counterattack tripping rate n1 and the shielding tripping rate n2, calculate the average lightning tripping rate N; according to the average lightning tripping rate N, classify the entire line of poles and towers according to the lightning strike risk. The invention can find out the poles and towers with serious lightning protection situation before the lightning strike fault occurs on the line, and take reforming measures in advance to reduce the lightning strike tripping rate of the transmission line.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to an automatic assessment method for lightning protection risks of transmission lines. Background technique [0002] In the power system, the transmission lines are mostly located in the wilderness, and the span is very long, so it is easy to be struck by lightning. Although a variety of lightning protection technical measures have been taken, the trip rate due to lightning strikes is still high, which has become the most important threat to the safety and stability of the power system. [0003] The lightning protection work of transmission lines has been in a relatively passive situation for a long time, which is related to the random characteristics of lightning in nature on the one hand, and is also caused by ineffective technical management measures on the other hand. At present, lightning protection work mainly relies on experience guidance, and lightning protection m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 黄文武鲁海亮王玮姚森敬文习山刘旭明贺振华蓝磊肖明杰
Owner SHENZHEN POWER SUPPLY BUREAU
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