Dynamic prediction method for power transmission line ground wire crossing electrical safety distance

A technology of electrical safety distance and transmission line, which is applied in forecasting, instrumentation, data processing applications, etc., and can solve problems such as unpredictable electrical safety distance

Pending Publication Date: 2020-03-17
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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  • Application Information

AI Technical Summary

Problems solved by technology

Even though UAV laser ranging technology has been widely used in recent years, it can only perform static ranging, and it is impossible to predict the distance between transmission line conductors and overhead ground wires under various temperature conditions (especially under extreme temperature conditions). Electrical safety distance between

Method used

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  • Dynamic prediction method for power transmission line ground wire crossing electrical safety distance
  • Dynamic prediction method for power transmission line ground wire crossing electrical safety distance
  • Dynamic prediction method for power transmission line ground wire crossing electrical safety distance

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Embodiment Construction

[0041] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0042] Such as figure 1 As shown, the present invention provides a method for dynamically predicting the electrical safety distance crossed by the conductor and ground wire of the transmission line, comprising the steps of:

[0043] S110: Obtain the specific load of the transmission line conductor and the span, and calculate the stress of the observed vertical arc of the transmission line conductor and the predicted stress of the transmission line conductor at different temperatures according to the actual sag and specific load of the observed transmission line conductor, based on Predicted Stress of Transmission Line Conductor Calculates the sagging arc at any point on the transmission line conductor at different tempe...

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Abstract

The invention relates to a dynamic prediction method for power transmission line ground wire crossing electrical safety distance. The temperature of a power transmission line conductor and the temperature of a crossed overhead ground wire are changed along with the change of an environment temperature and the continuous change of a conductor load, thereby causing the rise or fall of sag of the conductor and the crossed overhead ground wire. Due to different sag change amplitudes, the electrical safety distance of the ground wire is shortened. According to the scheme, the change degree of the conductor sag and the overhead ground wire sag under any temperature condition is judged according to a calculation method of a conductor sag catenary basic model and an overhead ground wire sag basicmodel, and the electrical safety distance of the conductor and the overhead ground wire is measured and calculated through the difference value of sag changes of the conductor and the overhead groundwire. According to the dynamic prediction method, whether the electrical safety distance between the wire and the overhead ground wire meets the requirement in a future period of time can be predicted.

Description

technical field [0001] The invention relates to the technical field of electrical safety, in particular to a method for dynamically predicting electrical safety distances crossed by conductors and ground wires of transmission lines. Background technique [0002] The traditional measurement of the space vertical distance between the transmission line conductor and the overhead ground wire mainly uses theodolite, total station or ranging pole to measure the distance, and then according to the measured distance and the overhead transmission line operating regulations or design specifications Electrical safety distance for comparison. Even though UAV laser ranging technology has been widely used in recent years, it can only perform static ranging, and it is impossible to predict the distance between transmission line conductors and overhead ground wires under various temperature conditions (especially under extreme temperature conditions). Electrical safety distance between. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 罗传仙龚浩江翼吴念别士光王乐希柯贤彬许晓路周正钦倪辉周文邓伟白波潘晓敏
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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