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Method and device for measuring space electric field of insulator of power transmission line

A space electric field and transmission line technology, applied in the direction of measurement device, electrostatic field measurement, measurement of electricity, etc., can solve the problems of insulator steel cap burst, broken string, broken string, etc., and achieve the effect of ensuring safe and stable operation and easy operation.

Pending Publication Date: 2022-06-28
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +2
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the joint action of long-term mechanical force, high electric field strength and environmental factors, insulators are prone to deterioration to varying degrees. Under operating overvoltage and lightning overvoltage, the steel cap of the insulator may burst, which may lead to severe string breakage and string drop. Faults seriously affect the stability of power system operation

Method used

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  • Method and device for measuring space electric field of insulator of power transmission line

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Effect test

Embodiment 1

[0042] like figure 1 As shown, an embodiment of the present invention provides a method for measuring the space electric field of a transmission line insulator, including the following steps:

[0043] 1. Establish multiple target paths of the UAV from the start point coordinates to the end point coordinates, and store the position coordinates of each target path;

[0044] 1.1. The acquisition of starting point coordinates includes:

[0045] Remote control the drone to the vicinity of the first insulator at the low-voltage end, adjust the attitude of the drone, and measure the distance from the drone to the insulator string through the airborne laser rangefinder, which is recorded as the first relative distance;

[0046] Determine whether the first relative distance meets the requirements of the effective detection distance under the corresponding voltage level,

[0047] If the requirements are not met, adjust the first relative distance until the requirements are met;

[00...

Embodiment 2

[0070] The embodiment of the present invention provides a transmission line insulator space electric field measurement device, the device includes:

[0071] The path establishment module is used to establish multiple target paths of the UAV from the coordinates of the starting point to the coordinates of the end point, and store the position coordinates of each target path;

[0072] The data acquisition module is used to set the UAV to automatically cruise along multiple target paths, and obtain the electric field data of each target path;

[0073] The path electric field distribution curve module is used to generate the corresponding path electric field distribution curve according to the position coordinates and electric field data of each target path;

[0074] The space electric field distribution curve module is used to generate the space electric field distribution curve according to the electric field distribution curves of all paths.

[0075] As will be appreciated by ...

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Abstract

The invention discloses a power transmission line insulator space electric field measurement method and device, and the method comprises the steps: building a plurality of target paths of an unmanned plane from a starting point coordinate to an end point coordinate, and storing the position coordinate of each target path; setting the unmanned aerial vehicle to automatically cruise along the plurality of target paths, and acquiring electric field data of each target path; generating a corresponding path electric field distribution curve according to the position coordinate and the electric field data of each target path; generating a space electric field distribution curve according to all path electric field distribution curves; according to the invention, information fusion can be carried out on the measured electric field intensity and the corresponding space coordinates, the space electric field intensity on the target path can be accurately obtained, the error of the measurement result caused by attitude disturbance and path offset of the unmanned aerial vehicle in the conventional non-contact measurement method is made up, and the measurement accuracy is improved. And non-contact high-precision live line measurement of the overhead line insulator string space electric field is realized.

Description

technical field [0001] The invention relates to a method and a device for measuring the space electric field of a transmission line insulator, belonging to the technical field of fault detection. Background technique [0002] The insulator is one of the key components in the power transmission system, which plays the role of mechanical support and electrical isolation of the conductors. Insulators are prone to different degrees of deterioration under the combined action of long-term mechanical force, high electric field strength and environmental factors. Under operating overvoltage and lightning overvoltage, the steel cap of the insulator may burst, which may lead to serious disconnection and disconnection. The failure seriously affects the stability of the power system operation. There is a space electric field around the live insulator string. When an insulator in the string is degraded to a low-zero value insulator, the space electric field around the insulator string w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/14G01R31/12G05D1/10
CPCG05D1/101G01R29/14G01R31/1245
Inventor 高嵩刘建军孙蓉杨景刚黄新宇谭笑陈杰邱刚张迺龙
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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