阅读说明：本技术 一种输电线路交叉点距离监测方法、装置及系统 (Method, device and system for monitoring distance of intersection point of power transmission line ) 是由 江辉 于 2021-10-27 设计创作，主要内容包括：本申请公开了一种输电线路交叉点距离监测方法、装置及系统,本申请提供的方法包括：接收监测装置的定位信息,其中,监测装置装配在输电线路的交叉跨越点位置；基于定位信息,计算同一交叉点下的监测装置的相对距离,以根据相对距离确定监测装置所在输电线路间的交叉跨越距离,基于本申请提供的方法,通过在输电线路交叉点的对应位置处设置监测装置,根据监测装置的定位信息确定输电线路交叉点的准确位置,从而得到更准确的交叉跨越距离,解决了现有的输电线路交叉跨越点距离监测存在误差大的技术问题。(The application discloses a method, a device and a system for monitoring distance of a crossing point of a power transmission line, wherein the method provided by the application comprises the following steps: receiving positioning information of a monitoring device, wherein the monitoring device is assembled at the position of a crossing point of a power transmission line; based on the method provided by the application, the monitoring devices are arranged at the corresponding positions of the intersection points of the power transmission line, and the accurate positions of the intersection points of the power transmission line are determined according to the positioning information of the monitoring devices, so that more accurate intersection distance is obtained, and the technical problem that the distance monitoring of the intersection points of the power transmission line has large errors in the prior art is solved.)

1. A method for monitoring the crossing span distance of a power transmission line is characterized by comprising the following steps:

receiving positioning information of a monitoring device, wherein the monitoring device is assembled at the position of a crossing point of a power transmission line;

and calculating the relative distance of the monitoring devices at the same intersection point based on the positioning information so as to determine the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

2. The method according to claim 1, wherein when the number of monitoring devices at the same intersection is more than two, the calculating the relative distance between the monitoring devices at the same intersection based on the positioning information specifically comprises:

and calculating the relative distance of each group of monitoring device pairs based on the positioning information so as to determine the crossing span distance between the power transmission lines where the monitoring devices are located according to each group of relative distance, wherein the monitoring device pairs are monitoring device combinations formed by any two monitoring devices at the same intersection point.

3. A method for monitoring the crossing span distance of a power transmission line is characterized by comprising the following steps:

determining the positioning information of a monitoring device through a positioning module built in the monitoring device;

and sending the positioning information to a control device, so that the control device calculates the relative distance of the monitoring devices at the same intersection point according to the received positioning information, and determines the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

4. The method for monitoring the crossing span distance of the power transmission line according to claim 3, wherein the determining the positioning information of the monitoring device specifically comprises:

measuring an original coordinate of a monitoring device, carrying out RTK differential calculation on the original coordinate and a reference coordinate of a preset reference station to obtain an accurate coordinate of the monitoring device, and taking the accurate coordinate as positioning information of the monitoring device.

5. The method for monitoring the crossing span distance of the power transmission line according to claim 3, wherein the sending the positioning information to the control device specifically comprises:

and sending the positioning information to a control device in a wireless communication mode.

6. The method according to claim 5, wherein the wireless communication mode specifically comprises: a mobile communication mode and/or a lora communication mode.

7. The method for monitoring the crossing span distance of the power transmission line according to claim 6, wherein the mobile communication mode specifically comprises: 4G/5G mobile communication mode.

8. A control device, comprising:

the receiving unit is used for receiving positioning information of a monitoring device, wherein the monitoring device is assembled at the position of a cross point of the power transmission line;

and the crossing distance calculation unit is used for calculating the relative distance of the monitoring devices at the same intersection point based on the positioning information so as to determine the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

9. A monitoring device, wherein the monitoring device is mounted at a crossover point position of a power transmission line, comprising:

the positioning unit is used for determining the positioning information of the monitoring device;

and the sending unit is used for sending the positioning information to the control device, so that the control device calculates the relative distance of the monitoring devices at the same intersection according to the received positioning information, and determines the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

10. A power transmission line crossing distance monitoring system is characterized by comprising: one or more control devices according to claim 8 and a plurality of monitoring devices according to claim 9.

Technical Field

The application relates to the technical field of power transmission, in particular to a method, a device and a system for monitoring the distance of a cross point of a power transmission line.

Background

Along with the development of economy in China and the improvement of the living standard of people, the demand of social life on electric power is more and more, a safe and stable power supply system is an important guarantee for industrial development and social stability, but along with the gradual increase of the laying scale of an overhead transmission line, the traditional manual line patrol mode is not enough to adapt to a huge transmission network day by day.

The measurement of the distance between crossing points is an important link of line patrol tasks, and the existing measurement method of the distance between crossing points generally adopts an eye measurement method and a longitude and latitude instrument for measurement. Taking the power transmission line structure shown in fig. 1 and 2 as an example, when a visual measurement method is adopted for measurement, a straight ruler is used for matching with two eyes, a cross point O is determined below the cross position of two lines, then a scale pile is nailed, the ground distance of the cross point of the two power transmission lines is measured through the visual measurement straight ruler, and finally the cross spanning distance h = BC between the two power transmission lines is calculated through a series of proportion conversion, so that the precision is low. When the theodolite is used for measurement, the theodolite needs to be shifted once, and the height and four vertical angles of the theodolite are measured twice. Due to the errors in the theodolite, the cumulative error of the result increases every time an angle is measured. And the two measurement modes essentially belong to manual measurement, have higher requirements on experience and skill level of measurement personnel and have the technical problem of large measurement result error.

Disclosure of Invention

The application provides a method, a device and a system for monitoring distance of a crossing point of a power transmission line, which are used for solving the technical problem of large error in the existing distance monitoring of the crossing point of the power transmission line.

The first aspect of the present application provides a method for monitoring a crossing span distance of a power transmission line, including:

and receiving positioning information of a monitoring device, wherein the monitoring device is assembled at the position of a cross-over point of the power transmission line.

And calculating the relative distance of the monitoring devices at the same intersection point based on the positioning information so as to determine the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

Preferably, when the number of the monitoring devices at the same intersection is more than two, the calculating the relative distance between the monitoring devices at the same intersection based on the positioning information specifically includes:

and calculating the relative distance of each group of monitoring device pairs based on the positioning information so as to determine the crossing span distance between the power transmission lines where the monitoring devices are located according to each group of relative distance, wherein the monitoring device pairs are monitoring device combinations formed by any two monitoring devices at the same intersection point.

The second aspect of the present application provides a method for monitoring a crossing span distance of a power transmission line, including:

and determining the positioning information of the monitoring device through a positioning module built in the monitoring device.

And sending the positioning information to a control device, so that the control device calculates the relative distance of the monitoring devices at the same intersection point according to the received positioning information, and determines the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

Preferably, the determining the positioning information of the monitoring device specifically includes:

measuring an original coordinate of a monitoring device, carrying out RTK differential calculation on the original coordinate and a reference coordinate of a preset reference station to obtain an accurate coordinate of the monitoring device, and taking the accurate coordinate as positioning information of the monitoring device.

Preferably, the sending the positioning information to the control device specifically includes:

and sending the positioning information to a control device in a wireless communication mode.

Preferably, the wireless communication method specifically includes: a mobile communication mode and/or a lora communication mode.

Preferably, the mobile communication method specifically includes: 4G/5G mobile communication mode.

A third aspect of the present application provides a control apparatus comprising:

the receiving unit is used for receiving the positioning information of the monitoring device, wherein the monitoring device is assembled at the position of a cross point of the power transmission line.

And the crossing distance calculation unit is used for calculating the relative distance of the monitoring devices at the same intersection point based on the positioning information so as to determine the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

The present application in a fourth aspect provides a monitoring device, which is assembled at a crossing point position of a power transmission line, comprising:

and the positioning unit is used for determining the positioning information of the monitoring device.

And the sending unit is used for sending the positioning information to the control device, so that the control device calculates the relative distance of the monitoring devices at the same intersection according to the received positioning information, and determines the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

The fifth aspect of the present application provides a power transmission line crossing distance monitoring system, including: one or more control devices as referred to in the third aspect of the application and a plurality of monitoring devices as referred to in the fourth aspect of the application.

According to the technical scheme, the method has the following advantages:

based on the method provided by the application, the monitoring device is arranged at the position corresponding to the intersection of the power transmission line, and the accurate position of the intersection of the power transmission line is determined according to the positioning information of the monitoring device, so that the more accurate crossing and crossing distance is obtained, and the technical problem that the existing distance monitoring of the crossing and crossing point of the power transmission line has large errors is solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic top view of a power transmission line crossing point.

Fig. 2 is a schematic side view of a power transmission line crossover point.

Fig. 3 is a schematic diagram of an architecture of a power transmission line crossing distance monitoring system provided in the present application.

Fig. 4 is a schematic flow chart of an embodiment of a method for monitoring a crossing distance of a power transmission line provided in the present application.

Fig. 5 is a schematic structural diagram of a control device provided in the present application.

Fig. 6 is a schematic structural diagram of a monitoring device provided in the present application.

Detailed Description

When using theodolite measurement, the measurement process can refer to the following example:

(1) and erecting a tower ruler right below the measured point or the cross point.

(2) The instrument is erected beside the line or on the approximate bisector of a large crossing angle (crossing), the sight distance S, the height h of the visual line of the tower ruler and the vertical sight angle O are read, then the telescope is rotated to cut the cross line on the lead of the distance to the ground to be measured and read the vertical sight angle theta, and then the telescope is rotated to cut the cross line on the lead of the distance to the ground to be measured and read the vertical sight angle theta to the ground. If the cross distance is measured, the telescope cross line is cut on the upper wire to read the vertical line angle theta₁Then, the telescope address word line is cut on the lower wire to read the vertical line-of-sight angle theta₂。

(3) From the measurement results, the crossing distance h ═ D (tg θ) is calculated₁-tgθ₂) And D is the horizontal distance from the theodolite to the intersection point.

Referring to fig. 1 and 2, when the measurement is performed by visual measurement, the following examples can be referred to for the measurement process:

and (4) crossing the crossing object by the lead, determining a cross point O below the cross position of the two lines by using a ruler matched with two eyes, and nailing a scale pile.

Starting from the point O, the distance L2 is measured step by step along the bisector direction of the intersection angle, and the point A is determined and is the observation point of the intersection spanning distance.

And (3) enabling the ruler to be in a vertical state in the hands of a measurer, measuring the distance L1 between the eyes of the measurer and the ruler, enabling the scale end 0 of the ruler in the vertical state to coincide with the lowest point of the upper span wire at the intersection, moving the thumb to be tangent with the scale of the ruler, repeatedly adjusting the scale of the ruler to coincide with the ground at the mark post, and reading the reading H1 of the ruler. Then H1= is the upper cross-conductor-to-ground distance, and similarly, the spanned-conductor-pair ground distance H2= the spanned-conductor-to-ground distance is measured, and then the cross-spanning distance H = H1-H2 is calculated.

In view of this, embodiments of the present application provide a method, an apparatus, and a system for monitoring a distance of a crossing point of a power transmission line, which are used to solve the technical problem of large error caused by manual operation of existing distance monitoring of crossing points of a power transmission line.

In order to make the objects, features and advantages of the present invention more apparent and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 3, a technical solution provided in a first embodiment of the present application specifically relates to a power transmission line intersection distance monitoring system, which includes: one or more control devices 10 and a plurality of monitoring devices 20, wherein the monitoring devices 20 are installed on the power transmission line, specifically at crossing points of the power transmission line, such as points B and C in fig. 2; the control device is used for receiving the positioning information of the monitoring device, so that the crossing distance between the power transmission lines is calculated.

The above is the basic content of the overall system architecture of the technical solution of the present application, and the following will describe the components of the above system in detail.

Referring to fig. 4, a method for monitoring a distance between crossing points of a power transmission line according to a second embodiment of the present application is applied to a control device of the monitoring system, and includes:

and step S1, receiving the positioning information of the monitoring device.

The monitoring device is assembled at the position of a crossing point of the power transmission line.

And step S2, calculating the relative distance of the monitoring devices at the same intersection point based on the positioning information, and determining the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

It should be noted that, in the method provided by the present application, by setting the monitoring device at the corresponding position of the intersection of the power transmission line, the accurate position of the monitoring device can be determined by the positioning information generated by the monitoring device and sent to the control device, including the longitude, latitude and elevation of the intersection, so as to determine the accurate position of the crossing point of the power transmission line, and on the basis of determining the accurate position of the crossing point of the power transmission line, the crossing distance result of the power transmission line, that is, the distance between the crossing line and the crossed line in the power transmission line, can be obtained by calculation.

In some possible embodiments, in an area where the route is complex, there may be more than two power transmission lines above the same intersection O, and when the number of monitoring devices at the same intersection is more than two, calculating the relative distance between the monitoring devices at the same intersection based on the positioning information specifically includes:

and calculating the relative distance of each group of monitoring device pairs based on the positioning information so as to determine the crossing distance between the power transmission lines where the monitoring devices are located according to each group of relative distances, wherein the monitoring device pairs are monitoring device combinations formed by any two monitoring devices at the same crossing point.

When more crossing points exist above the same crossing point, if 3 or more crossing points exist, monitoring devices consisting of any two monitoring devices can be combined into a pair of monitoring device pairs, then the relative distance of the two monitoring devices is calculated, so that the crossing distance of the power transmission lines where the monitoring devices are located is obtained, then the relative distance of each group of monitoring device pairs is calculated according to the same mode, and finally the crossing distance between the power transmission lines of the crossing point is obtained.

Meanwhile, as shown in fig. 3, a third embodiment of the present application also provides a method for monitoring a crossing distance of a power transmission line, where the method is applied to a monitoring device in the monitoring system, and includes:

and step Q1, determining the positioning information of the monitoring device through a positioning module built in the monitoring device.

The positioning mode of the monitoring device has various embodiments, such as a satellite positioning mode, a base station positioning mode, an AGPS positioning mode, etc., and the positioning module may adopt an existing circuit module corresponding to the selected positioning mode.

And step Q2, sending the positioning information to the control device, so that the control device calculates the relative distance of the monitoring devices at the same intersection according to the received positioning information, and determining the crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

Further, determining the positioning information of the monitoring device specifically includes:

measuring an original coordinate of the monitoring device, performing RTK differential calculation on the original coordinate and a reference coordinate of a preset reference station to obtain an accurate coordinate of the monitoring device, and taking the accurate coordinate as positioning information of the monitoring device.

The preferred location mode that adopts of this application embodiment is big dipper satellite positioning mode, when adopting this location mode, can measure monitoring devices's original coordinate through built-in positioning module, then carries out RTK differential calculation with the reference coordinate of original coordinate and preset reference station to obtain monitoring devices's accurate coordinate, regard as monitoring devices's locating information with the accurate coordinate, so that improve the monitoring accuracy.

Further, sending the positioning information to the control device specifically includes:

and sending the positioning information to the control device in a wireless communication mode.

Further, the wireless communication method specifically includes: a mobile communication mode and/or a lora communication mode.

Further, the mobile communication method specifically includes: 4G/5G mobile communication mode.

By the method for monitoring the crossed spanning distance of the power transmission line, the following beneficial effects can be realized:

1) the line is positioned and measured in real time, and the distance is accurately calculated by a microcomputer or a computer and transmitted to a power grid master station platform, so that the real-time monitoring is realized, and the accuracy is high.

2) The transmission lines of the power grid are spread all over the region, hundreds of kilometers are continuously prolonged, the rapid development of economy and the rapid expansion of the scale of the power grid inevitably bring more difficulties and challenges to the inspection, operation and maintenance work of the power grid. If the manual inspection mode is used all the time, the inspection efficiency is not high, and the whole power grid is difficult to be monitored for 7-24 hours all day long. The scheme provided by the application fills the disadvantage of manual inspection, greatly reduces the quota of inspection personnel, realizes the remote online monitoring of the power transmission line for 24 hours all day, does not need to erect a measuring instrument even if field measurement is carried out, and operation and maintenance personnel can directly acquire data through an intelligent terminal, check the monitoring result and improve the measurement and monitoring efficiency.

3) The monitoring safety is improved, and the trouble that the line cannot be patrolled in severe weather, long distance roads and dangerous areas is avoided.

The above embodiment provides a detailed description of the method for monitoring the crossing distance of the power transmission line, and the following provides a detailed description of a control device and a monitoring device for the present application.

Referring to fig. 5, a fourth embodiment of the present application provides a control device, where the control device may be an intelligent terminal of a worker, or may be a server or a host terminal disposed in a power grid management center, and the structure of the control device includes:

the receiving unit 101 is configured to receive positioning information of a monitoring device, where the monitoring device is mounted at a crossing point position of a power transmission line.

And the crossing distance calculating unit 102 is configured to calculate a relative distance of the monitoring devices at the same intersection based on the positioning information, so as to determine a crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

Referring to fig. 6, a fifth embodiment of the present application provides a monitoring device, which is installed at a crossing point position of a power transmission line, and includes:

a positioning unit 201, configured to determine positioning information of the monitoring device.

A sending unit 202, configured to send the positioning information to the control device, so that the control device calculates a relative distance between the monitoring devices at the same intersection according to the received positioning information, and determines a crossing distance between the power transmission lines where the monitoring devices are located according to the relative distance.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The terms "first," "second," "third," "fourth," and the like in the description of the application and the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.