Straight tower insulator string windage parameter measurement device and use method

Abstract

The present invention relates to a device for measuring the windage parameters of a straight tower insulator string and a method for using the device. The device comprises a set of UWB tags and at least two sets of UWB base stations. The UWB tags are used to be installed at the lowest end of the straight tower insulator string. When the straight tower insulator string falls naturally, the UWB tags are set at point C, and the UWB base stations are installed on the side of the straight tower adjacent to the UWB tags, and two sets of UWB base stations are set on a horizontal plane passing through point C. The windage data of the transmission line can be measured from the perspective of a new technical route.

Description

Technical Field

[0001] The invention relates to the technical field of windage measurement of power transmission lines, and in particular to a device for measuring windage parameters of a straight tower insulator string and a method for using the device. Background Art

[0002] The traditional online monitoring system for wind deflection of power transmission lines is to install the inclination sensor on the ball head hanging ring of the insulator string of the straight tower. The wind deflection swing of the insulator string is reflected in the output angle of the inclination sensor. The traditional wind deflection monitoring system has a simple structure and is easy to implement. However, a considerable amount of materials used for the insulators of the straight tower of the transmission line are composite insulating materials. The insulator strings composed of this material are more flexible and have weaker rigidity. Especially for the 500kV and above models, the size is longer. When the wind deflection swings under the action of strong winds, the body no longer remains straight, but shows a certain curvature. Simply using the inclination of the hanging point on the tower side of the insulator string is difficult to reflect the inclination of the hanging point on the end line side and the insulation distance from the tower. The error of the end wind deflection measured using this principle is large. Summary of the invention

[0003] The object of the present invention is to provide a device for measuring the windage parameters of a straight tower insulator string and a method for using the device so as to measure the windage data of a transmission line from the perspective of a new technical route.

[0004] The technical solution of the present invention is:

[0005] A device for measuring windage parameters of an insulator string of a straight tower comprises a set of UWB tags and at least two sets of UWB base stations, wherein the UWB tags are used to be installed at the lowest end of the insulator string of the straight tower. When the insulator string of the straight tower naturally hangs down, the UWB tags are set at point C, and the UWB base stations are installed on the side of the straight tower adjacent to the UWB tags, and two sets of UWB base stations are set on a horizontal plane passing through point C.

[0006] Preferably, the UWB tag and the UWB base station both include a control module and a UWB module, and the UWB module includes a DW1000 series UWB chip.

[0007] Preferably, there are three sets of UWB base stations, and the three sets of UWB base stations are arranged at three vertices of a triangle.

[0008] The method for using the aforementioned straight tower insulator string windage parameter measuring device comprises:

[0009] Assume that two sets of UWB base stations are located at points A and B respectively on the horizontal plane passing through point C. At the initial moment, the UWB tag is set at point C and measures the distance l between AB. c 、AC distance l b0 , BC distance l a0 , insulator string length li ;

[0010] At the measurement time, the UWB tag is set at point O and measures the AO distance l b1 BO distance l a1 ;

[0011] Wind deflection angle

[0012]

[0013] The method for using the aforementioned straight tower insulator string windage parameter measuring device comprises:

[0014] Assume that two sets of UWB base stations are located at points A and B respectively on the horizontal plane passing through point C. At the initial moment, the UWB tag is set at point C and measures the distance l between AB. c 、AC distance l b0 , BC distance l a0 , insulator string length l i ;

[0015] At the measurement time, the UWB tag is set at point O and measures the AO distance l b1 BO distance l a1 ;

[0016] Wind deviation distance

[0017]

[0018] The beneficial effects of the present invention are:

[0019] 1. Use UWB base station and UWB tag to directly measure the shortest distance from the insulator string to the tower, that is, the change of insulation distance caused by wind deviation, with a distance accuracy of 10cm. Compared with using inclination sensor to measure the inclination angle at the end of the insulator string, although this device still has systematic errors, its results are more accurate, the measurement principle is more reliable, and it is less affected by the flexibility of the insulator string.

[0020] 2. In the method of the present invention, in the theoretical error, the wind deflection angle Smaller than the actual wind angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a schematic diagram of the measurement effect of a transmission line wind angle monitoring device constructed using a tilt sensor.

[0022] Figure 2 The present invention is a schematic diagram of the measurement effect of a device for measuring windage parameters of a straight tower insulator string.

[0023] Figure 3Schematic diagram for finding the height of a triangle. DETAILED DESCRIPTION

[0024] The present invention is described in the form of embodiments in conjunction with the accompanying drawings to assist those skilled in the art in understanding and implementing the present invention. Unless otherwise specified, the following embodiments and the technical terms therein should not be understood without departing from the technical knowledge background of the technical field.

[0025] Figure 1 The schematic diagram of the measurement effect of a transmission line windage monitoring device constructed using a tilt sensor is shown. At the end of the insulator string, the tilt angle ∠OEC deviates greatly from ∠O'EC. Therefore, this method has a large error when measuring the windage of a transmission line suspended by a flexible insulator string.

[0026] Embodiment 1: A device for measuring windage parameters of an insulator string of a straight tower, comprising a set of UWB tags and two sets of UWB base stations, wherein the UWB tags are used to be installed at the lowest end of the insulator string of the straight tower, and when the insulator string of the straight tower hangs naturally, the UWB tags are set at point C, and the UWB base stations are installed on the side of the straight tower adjacent to the UWB tags. The straight tower has four sides, and the side adjacent to the UWB tags is the plane of the straight tower that is approximately parallel to the transmission line. The two sets of UWB base stations are set on a horizontal plane passing through point C, and the two sets of UWB base stations set on the horizontal plane passing through point C are respectively located at points A and B.

[0027] At the initial moment, the UWB tag is set at point C and measures the distance l between AB c 、AC distance l b0 , BC distance l a0 , insulator string length l i , where AB distance l c , insulator string length l i It can be measured in advance, AC distance l b0 , BC distance l a0 The UWB base station can be used to communicate with the UWB tag to achieve the ranging function.

[0028] Let CD be the perpendicular line from point C to AB. Figure 3 ,but

[0029]

[0030] At the measurement time, the UWB tag is set at point O and measures the AO distance l b1 , BO distance l a1 , where AO distance l b1 , BO distance l a1 The UWB base station can be used to communicate with the UWB tag to achieve the ranging function.

[0031] Let OD be the perpendicular line from point O to AB, then

[0032]

[0033] See also Figure 2 , because when the transmission line is deflected by wind, its point O rises less relative to point C, that is, ∠ODC is extremely small, so it can be considered that DO'≈OD, OE≈CE=l i , then R=O'C=CD-O'D≈CD-OD.

[0034] See also Figure 2 When using the straight tower insulator string windage parameter measurement device to measure the windage angle, the windage angle Wind deviation distance

[0035] In this embodiment, the UWB tag includes a battery, a control module and a UWB module, the UWB base station includes a battery, a control module and a UWB module, the UWB module includes a DW1000 series UWB chip, and the control module selects a 32-bit low-power ARM processor STM32F411. By configuring the wiring between the control module and the UWB module, the UWB chip works in the UWB tag or UWB base station mode.

[0036] In order to measure the lengths of DO' and OE more accurately, in other embodiments, there are three sets of UWB base stations, which are arranged at three vertices of a triangle. Thus, three sets of UWB base stations and one set of UWB tags are arranged at four vertices of a triangular pyramid respectively.

[0037] The present invention is described in detail above with reference to the accompanying drawings and embodiments. It should be understood that it is impossible to describe all possible implementation methods in practice, and the inventive concept of the present invention is described as much as possible by way of example. Without departing from the inventive concept of the present invention and without creative work, the technical personnel in this technical field make selections and combinations of the technical features in the above embodiments, make experimental changes to the specific parameters, or use the prior art in this technical field to conventionally replace the disclosed technical means of the present invention to form specific embodiments, which should all belong to the implicit disclosure of the present invention.

Claims

1. A device for measuring windage parameters of a straight tower insulator string, characterized in that: It includes a set of UWB tags and at least two sets of UWB base stations, wherein the UWB tags are used to be installed at the lowest end of the insulator string of the straight tower. When the insulator string of the straight tower falls naturally, the UWB tags are set at point C, and the UWB base stations are installed on the side of the straight tower adjacent to the UWB tags, and the two sets of UWB base stations are set on a horizontal plane passing through point C; The UWB tag and the UWB base station both include a control module and a UWB module, and the UWB module includes a DW1000 series UWB chip; There are three sets of UWB base stations, which are arranged at three vertices of a triangle.

2. The method for using the device for measuring windage parameters of a straight tower insulator string according to claim 1, characterized in that: include: Assume that two sets of UWB base stations are located at points A and B respectively on the horizontal plane passing through point C. At the initial moment, the UWB tag is set at point C and measures the distance l between AB. c 、AC distance l b0 , BC distance l a0 , insulator string length l i ; At the measurement time, the UWB tag is set at point O and measures the AO distance l b1 BO distance l a1 ; Wind deflection angle 3. The method for using the device for measuring windage parameters of a straight tower insulator string according to claim 1, characterized in that: include: Assume that two sets of UWB base stations are located at points A and B respectively on the horizontal plane passing through point C. At the initial moment, the UWB tag is set at point C and measures the distance l between AB. c 、AC distance l b0 , BC distance l a0 , insulator string length l i ; At the measurement time, the UWB tag is set at point O and measures the AO distance l b1 BO distance l a1 ; Wind deviation distance

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