CN106871837B - Arc sag measurement method and device - Google Patents

Arc sag measurement method and device Download PDF

Info

Publication number
CN106871837B
CN106871837B CN201710077138.5A CN201710077138A CN106871837B CN 106871837 B CN106871837 B CN 106871837B CN 201710077138 A CN201710077138 A CN 201710077138A CN 106871837 B CN106871837 B CN 106871837B
Authority
CN
China
Prior art keywords
transmission pressure
point
inclination angle
tangent line
line inclination
Prior art date
Application number
CN201710077138.5A
Other languages
Chinese (zh)
Other versions
CN106871837A (en
Inventor
杨东升
丁英强
赵彭波
李希魁
武吉庆
李宏伟
敖彬仪
秦利涛
王飞虎
李宁
Original Assignee
郑州信工智能化系统有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 郑州信工智能化系统有限公司 filed Critical 郑州信工智能化系统有限公司
Priority to CN201710077138.5A priority Critical patent/CN106871837B/en
Publication of CN106871837A publication Critical patent/CN106871837A/en
Application granted granted Critical
Publication of CN106871837B publication Critical patent/CN106871837B/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/02Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring length, width, or thickness

Abstract

The embodiment of the invention provides a kind of arc sag measurement method and devices, belong to technical field of power transmission.The described method includes: obtaining the horizontal distance between first hitch point and second hitch point;Obtain the first tangent line inclination angle of first hitch point and the second tangent line inclination angle of second hitch point;Based on the horizontal distance, first tangent line inclination angle, second tangent line inclination angle and the first preset rules, the arc sag of the transmission pressure is obtained.The arc sag of precise measurement transmission pressure is realized with this.

Description

Arc sag measurement method and device
Technical field
The present invention relates to technical field of power transmission, in particular to a kind of arc sag measurement method and device.
Background technique
Arc sag is a key index of ultra-high-tension power transmission line safe operation.Now common arc sag measurement method has observation Method and two kinds of electronic surveying method.The common tool of observation method has arc sag plate, theodolite etc., but the measurement of arc sag plate needs profession There are the personnel of abundant use experience to operate, and precision is difficult to quantify;The operating process of theodolite is cumbersome, and measurement result is not also true It is fixed.The generally first founding mathematical models of electronic surveying method, whether accurate catenary equation, or the parabola side of simplified version Journey requires the difference in height of two hitch points of known grounded-line.In certain applications and patent, this parameter is but directly neglected Or power transmission tower is used to exhale the difference in height for claiming height difference as hitch point, this calculation method obviously will cause arc sag measurement accuracy Deviation if it is the occasion in complex geographical environment, or even causes safety accident.
Summary of the invention
In view of this, the embodiment of the present invention is designed to provide a kind of arc sag measurement method and device, it is above-mentioned to improve Problem.To achieve the goals above, the technical solution adopted by the present invention is as follows:
In a first aspect, being applied to transmission pressure the embodiment of the invention provides a kind of arc sag measurement method, the transmission of electricity is led The first end of line is set to the first end of the first power transmission tower, and the second end of the transmission pressure is set to the first of the second power transmission tower End, the first end of the transmission pressure are provided with the first hitch point, and the second end of the transmission pressure is provided with the second hitch point, The described method includes: obtaining the horizontal distance between first hitch point and second hitch point;It is outstanding to obtain described first First tangent line inclination angle of hanging point and the second tangent line inclination angle of second hitch point;Based on the horizontal distance, described first Tangent line inclination angle, second tangent line inclination angle and the first preset rules, obtain the arc sag of the transmission pressure.
Second aspect, the embodiment of the invention provides a kind of sag measuring devices, are applied to transmission pressure, and the transmission of electricity is led The first end of line is set to the first end of the first power transmission tower, and the second end of the transmission pressure is set to the first of the second power transmission tower End, the first end of the transmission pressure are provided with the first hitch point, and the second end of the transmission pressure is provided with the second hitch point, Described device includes: first acquisition unit, for obtain between first hitch point and second hitch point it is horizontal away from From;Second acquisition unit, for obtain first hitch point the first tangent line inclination angle and second hitch point second Tangent line inclination angle;Arc sag obtaining unit, for being based on the horizontal distance, first tangent line inclination angle, second tangent line inclination angle And first preset rules, obtain the arc sag of the transmission pressure.
The embodiment of the invention provides a kind of arc sag measurement method and devices, are applied to transmission pressure, the transmission pressure First end be set to the first end of the first power transmission tower, the second end of the transmission pressure is set to the first of the second power transmission tower End, the first end of the transmission pressure are provided with the first hitch point, and the second end of the transmission pressure is provided with the second hitch point, The described method includes: obtaining the horizontal distance between first hitch point and second hitch point;It is outstanding to obtain described first First tangent line inclination angle of hanging point and the second tangent line inclination angle of second hitch point;Based on the horizontal distance, described first Tangent line inclination angle, second tangent line inclination angle and the first preset rules, obtain the arc sag of the transmission pressure.It is realized accurately with this Measure the arc sag of transmission pressure.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification It is clear that by implementing understanding of the embodiment of the present invention.The objectives and other advantages of the invention can be by written theory Specifically noted structure is achieved and obtained in bright book, claims and attached drawing.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural block diagram that can be applied to the electronic equipment in the embodiment of the present application;
Fig. 2 is the flow chart for the arc sag measurement method that first embodiment of the invention provides;
Fig. 3 is the stress analysis schematic diagram of the transmission pressure for the arc sag measurement method that first embodiment of the invention provides;
Fig. 4 is that the transmission pressure of arc sag measurement method that first embodiment of the invention provides and the mathematical model of power transmission tower are shown It is intended to;
Fig. 5 is the schematic diagram of calculation result for the arc sag measurement method that first embodiment of the invention provides;
Fig. 6 is the structural block diagram for the sag measuring device that second embodiment of the invention provides.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Fig. 1 is please referred to, Fig. 1 shows a kind of structural block diagram of electronic equipment 100 that can be applied in the embodiment of the present application. The electronic equipment 100 can be used as user terminal, be also possible to computer or server, the user terminal can for mobile phone or Tablet computer.As shown in Figure 1, electronic equipment 100 may include memory 110, storage control 111, processor 112 and arc sag Measuring device.
Memory 110, storage control 111 are directly or indirectly electrically connected between each element of processor 112, to realize The transmission or interaction of data.For example, can realize electricity by one or more communication bus or signal bus between these elements Connection.Arc sag measurement method, which respectively includes at least one, can be stored in memory in the form of software or firmware (firmware) Software function module in 110, such as software function module or computer program that the sag measuring device includes.
Memory 110 can store various software programs and module, such as arc sag measurement side provided by the embodiments of the present application Method and the corresponding program instruction/module of device.Processor 112 by operation storage software program in the memory 110 and Module, thereby executing various function application and data processing, i.e. arc sag measurement method in realization the embodiment of the present application.Storage Device 110 can include but is not limited to random access memory (Random Access Memory, RAM), read-only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only Memory, PROM) is erasable Read-only memory (Erasable Programmable Read-Only Memory, EPROM), electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Processor 112 can be a kind of IC chip, have signal handling capacity.Above-mentioned processor can be general Processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network Processor, abbreviation NP) etc.;It can also be digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable Gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.It can To realize or execute disclosed each method, step and the logic diagram in the embodiment of the present application.General processor can be micro- Processor or the processor are also possible to any conventional processor etc..
First embodiment
Referring to figure 2., the embodiment of the invention provides a kind of arc sag measurement methods, are applied to transmission pressure, the transmission of electricity The first end of conducting wire is set to the first end of the first power transmission tower, and the second end of the transmission pressure is set to the of the second power transmission tower One end, the first end of the transmission pressure are provided with the first hitch point, and the second end of the transmission pressure is provided with the second suspension Point, which comprises
Step S200: the horizontal distance between first hitch point and second hitch point is obtained;
Step S210: the first tangent line inclination angle of first hitch point and the second tangent line of second hitch point are obtained Inclination angle;
Fig. 3 is referred to, transmission pressure is connected between adjacent power transmission tower A and power transmission tower B.In fact, transmission pressure is outstanding Skyborne tracing pattern is described to be the premise for carrying out conducting wire mechanical analysis with what equation from mathematical angle.As it is assumed that Conducting wire is regarded as flexible cable, then can be analyzed according to the catenary relationship in rational mechanics, i.e., it is wire erection is skyborne several What form is considered as stretched wire form, and the equation being derived there is catenary equation.
Using the minimum point of transmission pressure as coordinate origin O, founding mathematical models, transmission pressure take up an official post take a point D (x, Y), the stress relationship for analyzing OD sections of transmission pressures, as shown in figure 3, OD sections of transmission pressures are kept balancing by three power, wherein D It is Tx=σ that point, which bears pulling force,xS, pulling force Tx and transmission pressure contact of a curve, are θ with horizontal direction angle;It is T that O point, which bears pulling force,00S, T0For the tangential direction of transmission pressure O point, with horizontal direction parallel, also known as Horizontal Tension;The lotus of OD section lead itself Carrying is G=gSLx, LxFor the arc length of OD section lead.
By statics balance condition it is found that the algebraical sum of OD section lead horizontal component, vertical stress component is respectively 0, vertical point Power G=Tx × sin θ=gSLx;Horizontal component is T0=Tx × cos θ=σ0S.Wherein, σ0For longitudinal stress, (transmission pressure is minimum Point stress), unit Mpa (1Pa=1N/m2);G is that the ratio of transmission pressure carries, unit: N/mmm2
Wherein, m0For the weight of every kilometer of transmission pressure, unit is kg/km;S is transmission pressure sectional area, and unit is mm2
The above vertical stress component is compared with the expression formula of horizontal component, then can get the slope of conducting wire any point D are as follows:
It then is to take the derivative of any point on curve for tangent slope using the knowledge of calculus, variables separation acquires D Expression formula, that is, catenary equation formula (2) of point ordinate:
Wherein,Are as follows:
Route design in, for the convenience calculated, do not need generally using accurate formula equation, but spread out for Taylor series form.Catenary equation formula (2) is expanded into infinite series expression formula (3) (in x=0 point):
According toPhysical significance, it can be determined that its numerical value be much smaller than 1, so taking approximation to infinite series expression formula (3) Value are as follows:
It follows that catenary equation (4) is common parabolic equation after simplifying.
Step S220: pre- based on the horizontal distance, first tangent line inclination angle, second tangent line inclination angle and first If regular, the arc sag of the transmission pressure is obtained.
Using the minimum point of the transmission pressure as coordinate origin, the tangential direction with the minimum point of the transmission pressure is X Axis, using the process coordinate origin and Y-axis is in the direction vertical with the X-axis, is based onObtain the transmission pressure measurement point Arc sag, wherein H is the arc sag of the transmission pressure measurement point, and x is the abscissa of the measurement point, l be it is described it is horizontal away from From θ1For first tangent line inclination angle, θ2For second tangent line inclination angle.
Specifically, referring to figure 4., T1 indicates that the first power transmission tower, T2 indicate that adjacent with first power transmission tower second is defeated Pylon, C1 indicate transmission pressure, dangle between the first power transmission tower and the second power transmission tower, A point is first power transmission tower and institute The tie point of transmission pressure is stated, B point is the tie point of second power transmission tower and the transmission pressure.L is between A point and B point Horizontal distance, difference in height of the Δ h between A point and B point.It is understood that A point is the first hitch point, B point is second outstanding Hanging point.
Using the minimum point of the transmission pressure C1 as coordinate origin O, with the tangential direction of the minimum point of the transmission pressure For X-axis, using the process coordinate origin and Y-axis is in the direction vertical with the X-axis, establishes XOY rectangular co-ordinate as shown in Figure 4 System, A point angle of tangent line and X-axis on transmission pressure is θ1, θ1For first tangent line inclination angle;B point tangent line on transmission pressure Angle with X-axis is θ2, θ2For second tangent line inclination angle.Set up an office A (x1,y1), point B (x2,y2), point A and point B meet (4) Parabolic equation enablesIt can establish following six equation group simultaneously:
y′1=f ' (x1The β x of)=21=-tan θ1(7)
y′2=f ' (x2The β x of)=22=tan θ2(8)
x2-x1=l (9)
y2-y1=Δ h (10)
By equation (9) the right and left simultaneously multiplied by 2 β, then equation (7) and equation (8) are brought into equation (9), acquisition side Journey (11):
tanθ2+tanθ1=2 β l (11)
By equation (11) both sides simultaneously divided by 2l, the expression formula i.e. equation (12) of β is obtained:
It brings equation (12) into equation (7) and (8) respectively, obtains x1And x2Expression formula:
Straight line AB equation is established according to the coordinate of point A and point B are as follows:
Abbreviation is carried out to equation (15), obtains equation (16):
G (x)=β (x1+x2)x-βx1x2 (16)
According to the definition of arc sag, any point arc sag H on transmission pressure are as follows:
I.e.
In formula (17), x is the abscissa of the measurement point.
When the measurement point is the shelves midpoint of first hitch point and second hitch point, it is based onObtain arc sag among the shelves of the transmission pressure, wherein H1For the transmission pressure The intermediate arc sag of shelves, l are the horizontal distance, θ1For first tangent line inclination angle, θ2For second tangent line inclination angle.
Specifically, when the measurement point is the shelves midpoint of first hitch point and second hitch point, i.e.,When:
Abbreviation obtains:
When x is 0, it is based onThe minimum point arc sag of the transmission pressure is obtained, In, H2For the minimum point arc sag of the transmission pressure, l is the horizontal distance, θ1For first tangent line inclination angle, θ2It is described Second tangent line inclination angle.
Specifically, when the measurement point is minimum point, in formula (17), enabling x is 0, obtains the transmission pressure most Low spot arc sag:
The method also includes: based on the horizontal distance, first tangent line inclination angle, second tangent line inclination angle and Second preset rules obtain the difference in height between the first end of the transmission pressure and the second end of the transmission pressure.
As an implementation, it is based onObtain first end and the institute of the transmission pressure State the difference in height between the second end of transmission pressure, wherein Δ h is the difference in height, and l is the horizontal distance, θ1It is described First tangent line inclination angle, θ2For second tangent line inclination angle.
Specifically, expression formula (12), (13), (14) are brought into equation (10), are calculated:
Abbreviation obtains:
Based on the horizontal distance, first tangent line inclination angle, the difference in height and third preset rules, described in acquisition The arc sag of transmission pressure.
Specifically, it is based onObtain the arc sag of the transmission pressure, wherein H3It is described defeated The arc sag of electric lead, Δ h are the difference in height, and l is the horizontal distance, θ1For first tangent line inclination angle.
Specifically, it according to formula (18), (19), calculates and derives and can obtain:
In known l, θ1, in the case where Δ h, can use formula (20) and calculate and obtain arc sag among shelves.
The first tangent line inclination angle theta of A point is measured by existing measuring tool1, the second tangent line inclination angle theta of B point2, A point and B point Horizontal distance l;Based on above formula, and obtain the arc sag or difference in height of transmission pressure.Realize that precise measurement transmission of electricity is led with this The arc sag of line.For example, measuring two adjacent power towers i.e. A point and B point spacing is 90 meters, A point is obtained by 25 measurements First tangent line inclination angle theta1With the second tangent line inclination angle theta of B point2, and difference in height, shelves centre arc sag, minimum point arc sag, knot is calculated Fruit is as shown in figure 5, the point inclination angle A indicates the first tangent line inclination angle theta of A point1, unit is degree;Second tangent line of the point inclination angle B expression B point Inclination angle theta2, unit is degree.Wherein, measurement show that the maximum value at the first tangent line inclination angle of A point is 6.362 degree, minimum value 6.158 Degree, differing is 0.204 degree;Wherein, measurement show that the maximum value at the second tangent line inclination angle of B point is 10.397 degree, and minimum value is 10.173 degree, differing is 0.224 degree;The maximum value for measuring difference in height is 3.306102988 meters, minimum value 3.068293583 Rice, differing is 0.237809405 meter;3.317850922 meters of maximum value of arc sag among shelves are measured, minimum value is 3.231899946 rice, differing is 0.084022143 meter;The maximum value for measuring minimum point arc sag is 3.120269431 meters, minimum Value is 3.031507539 meters, and differing is 0.083838669 meter.By repeatedly measuring, counting accuracy is improved.
It should be noted that the distance between general adjacent power tower is more than 200 meters due on Practical Project, close There are more than 100 meters, remote there are more than 500 meters.Erecting bed measuring device is as follows in practice: attached in the actual suspension point of the first power transmission tower Closely fix a measuring device, as measurement index point A, measurement index point A be located at the first power transmission tower 1 meter of actual suspension point it Interior, 1 meter for more than 200 meters, can be ignored;In the hitch point of the second adjacent power transmission tower with the first power transmission tower Fix second measuring device, as measurement index point B, measurement index point B be located at the first power transmission tower 1 meter of actual suspension point it Interior, 1 meter for more than 200 meters, can be ignored.Thus index point A is measured using two measuring device real-time measurements Tangent line inclination angle and A, B two o'clock horizontal distance with measurement index point B, to obtain the arc sag of transmission pressure.
The embodiment of the invention provides a kind of arc sag measurement method, it is applied to transmission pressure, the first of the transmission pressure End is set to the first end of the first power transmission tower, and the second end of the transmission pressure is set to the first end of the second power transmission tower, described The first end of transmission pressure is provided with the first hitch point, and the second end of the transmission pressure is provided with the second hitch point, the side Method includes: the horizontal distance obtained between first hitch point and second hitch point;Obtain first hitch point First tangent line inclination angle and the second tangent line inclination angle of second hitch point;Inclined based on the horizontal distance, first tangent line Angle, second tangent line inclination angle and the first preset rules, obtain the arc sag of the transmission pressure.Realize that precise measurement is defeated with this The arc sag of electric lead.
Second embodiment
Fig. 6 is referred to, the embodiment of the invention provides a kind of sag measuring devices 300, are applied to transmission pressure, described defeated The first end of electric lead is set to the first end of the first power transmission tower, and the second end of the transmission pressure is set to the second power transmission tower First end, the first end of the transmission pressure are provided with the first hitch point, and it is outstanding that the second end of the transmission pressure is provided with second Hanging point, described device 300 include:
First acquisition unit 310, for obtaining the horizontal distance between first hitch point and second hitch point.
Second acquisition unit 320, the first tangent line inclination angle and described second for obtaining first hitch point are hung Second tangent line inclination angle of point.
Arc sag obtaining unit 330, for being inclined based on the horizontal distance, first tangent line inclination angle, second tangent line Angle and the first preset rules, obtain the arc sag of the transmission pressure.
Specifically, the arc sag obtaining unit 330, for using the minimum point of the transmission pressure as coordinate origin, with institute The tangential direction for stating the minimum point of transmission pressure is X-axis, and with the process coordinate origin and the direction vertical with the X-axis is Y Axis is based on Obtain the transmission pressure The arc sag of measurement point, wherein H is the arc sag of the transmission pressure measurement point, and x is the abscissa of the measurement point, and l is the water Flat distance, θ1For first tangent line inclination angle, θ2For second tangent line inclination angle.
It should be noted that each unit in the present embodiment can be by software code realization, at this point, above-mentioned each unit It can be stored in memory 110.The above each unit can equally be realized by hardware such as IC chip.
The technical effect of sag measuring device 300 provided in an embodiment of the present invention, realization principle and generation and aforementioned side Method embodiment is identical, and to briefly describe, Installation practice part does not refer to place, can refer in corresponding in preceding method embodiment Hold.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and block diagram in attached drawing Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product, Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code Part, a part of the module, section or code, which includes that one or more is for implementing the specified logical function, to be held Row instruction.It should also be noted that function marked in the box can also be to be different from some implementations as replacement The sequence marked in attached drawing occurs.For example, two continuous boxes can actually be basically executed in parallel, they are sometimes It can execute in the opposite order, this depends on the function involved.It is also noted that every in block diagram and or flow chart The combination of box in a box and block diagram and or flow chart can use the dedicated base for executing defined function or movement It realizes, or can realize using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention. And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.It needs Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities The relationship or sequence on border.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device. In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element Process, method, article or equipment in there is also other identical elements.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing It is further defined and explained.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.

Claims (6)

1. a kind of arc sag measurement method, which is characterized in that be applied to transmission pressure, the first end of the transmission pressure is set to the The first end of one power transmission tower, the second end of the transmission pressure are set to the first end of the second power transmission tower, the transmission pressure First end is provided with the first hitch point, and the second end of the transmission pressure is provided with the second hitch point, which comprises
Obtain the horizontal distance between first hitch point and second hitch point;
Obtain the first tangent line inclination angle of first hitch point and the second tangent line inclination angle of second hitch point;
Based on the horizontal distance, first tangent line inclination angle, second tangent line inclination angle and the first preset rules, institute is obtained State the arc sag of transmission pressure;
Wherein, first preset rules include: using the minimum point of the transmission pressure as coordinate origin, with the transmission pressure The tangential direction of minimum point be X-axis, to be based on by the coordinate origin and Y-axis is in the direction vertical with the X-axis Obtain the transmission pressure measurement point Arc sag, wherein H is the arc sag of the transmission pressure measurement point, and x is the abscissa of the measurement point, l be it is described it is horizontal away from From θ1For first tangent line inclination angle, θ2For second tangent line inclination angle.
2. the method according to claim 1, wherein when the measurement point is first hitch point and described the When the shelves midpoint of two hitch points, it is based onArc sag among the shelves of the transmission pressure is obtained, Wherein, H1For arc sag among the shelves of the transmission pressure, l is the horizontal distance, θ1For first tangent line inclination angle, θ2For institute State the second tangent line inclination angle.
3. the method according to claim 1, wherein being based on when x is 0Obtain the minimum point arc sag of the transmission pressure, wherein H2For the transmission pressure Minimum point arc sag, l are the horizontal distance, θ1For first tangent line inclination angle, θ2For second tangent line inclination angle.
4. the method according to claim 1, wherein the method also includes:
Based on the horizontal distance, first tangent line inclination angle, second tangent line inclination angle and the second preset rules, institute is obtained State the difference in height between the first end of transmission pressure and the second end of the transmission pressure;
Wherein, second preset rules include: to be based onObtain the first of the transmission pressure Difference in height between end and the second end of the transmission pressure, wherein Δ h is the difference in height, and l is the horizontal distance, θ1 For first tangent line inclination angle, θ2For second tangent line inclination angle.
5. according to the method described in claim 4, it is characterized in that, the method also includes:
Based on the horizontal distance, first tangent line inclination angle, the difference in height and third preset rules, the transmission of electricity is obtained The arc sag of conducting wire;
Wherein, the third preset rules include: to be based onThe arc sag of the transmission pressure is obtained, Wherein, H3For the arc sag of the transmission pressure, Δ h is the difference in height, and l is the horizontal distance, and θ 1 is first tangent line Inclination angle.
6. a kind of sag measuring device, which is characterized in that be applied to transmission pressure, the first end of the transmission pressure is set to the The first end of one power transmission tower, the second end of the transmission pressure are set to the first end of the second power transmission tower, the transmission pressure First end is provided with the first hitch point, and the second end of the transmission pressure is provided with the second hitch point, and described device includes:
First acquisition unit, for obtaining the horizontal distance between first hitch point and second hitch point;
Second acquisition unit, for obtain first hitch point the first tangent line inclination angle and second hitch point second Tangent line inclination angle;
Arc sag obtaining unit, for based on the horizontal distance, first tangent line inclination angle, second tangent line inclination angle and the One preset rules obtain the arc sag of the transmission pressure;Wherein, first preset rules include: with the transmission pressure Minimum point is coordinate origin, using the tangential direction of the minimum point of the transmission pressure as X-axis, with by the coordinate origin and with The vertical direction of the X-axis is Y-axis, is based on Obtain the arc sag of the transmission pressure measurement point, wherein H is the arc sag of the transmission pressure measurement point, and x is the measurement point Abscissa, l are the horizontal distance, θ1For first tangent line inclination angle, θ2For second tangent line inclination angle.
CN201710077138.5A 2017-02-13 2017-02-13 Arc sag measurement method and device CN106871837B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710077138.5A CN106871837B (en) 2017-02-13 2017-02-13 Arc sag measurement method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710077138.5A CN106871837B (en) 2017-02-13 2017-02-13 Arc sag measurement method and device

Publications (2)

Publication Number Publication Date
CN106871837A CN106871837A (en) 2017-06-20
CN106871837B true CN106871837B (en) 2019-06-14

Family

ID=59166052

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710077138.5A CN106871837B (en) 2017-02-13 2017-02-13 Arc sag measurement method and device

Country Status (1)

Country Link
CN (1) CN106871837B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110906871A (en) * 2019-11-29 2020-03-24 河南送变电建设有限公司 Method for observing and adjusting lead through gear side sag
CN110906872A (en) * 2019-11-29 2020-03-24 河南送变电建设有限公司 Method for observing and adjusting lead through high-efficiency gear side sag

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02306102A (en) * 1989-02-15 1990-12-19 Hitachi Cable Ltd Sag measuring method and tightening method for transmission line and tool therefor
CN101750019A (en) * 2008-12-03 2010-06-23 韩电Kps株式会社 Power transmission line dip measurement method
CN102230784A (en) * 2011-04-18 2011-11-02 四川电力科学研究院 Wire detection device and detection method
CN102721371A (en) * 2012-07-03 2012-10-10 华北电力大学(保定) Device and method for calculating sag of power transmission line
CN103323167A (en) * 2013-07-10 2013-09-25 国家电网公司 Method for monitoring stress and sag of transmission line conductor
CN107101763A (en) * 2017-04-25 2017-08-29 国网江西省电力公司电力科学研究院 A kind of super calibration method of the distribution stress of conductor for differentiating that hitch point is not contour

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02306102A (en) * 1989-02-15 1990-12-19 Hitachi Cable Ltd Sag measuring method and tightening method for transmission line and tool therefor
CN101750019A (en) * 2008-12-03 2010-06-23 韩电Kps株式会社 Power transmission line dip measurement method
US8155921B2 (en) * 2008-12-03 2012-04-10 Kps Co., Ltd. Power transmission line dip measurement method
CN102230784A (en) * 2011-04-18 2011-11-02 四川电力科学研究院 Wire detection device and detection method
CN102721371A (en) * 2012-07-03 2012-10-10 华北电力大学(保定) Device and method for calculating sag of power transmission line
CN103323167A (en) * 2013-07-10 2013-09-25 国家电网公司 Method for monitoring stress and sag of transmission line conductor
CN107101763A (en) * 2017-04-25 2017-08-29 国网江西省电力公司电力科学研究院 A kind of super calibration method of the distribution stress of conductor for differentiating that hitch point is not contour

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《高压输电线路弧垂在线监测研究》;张江华;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20130715;9-11

Also Published As

Publication number Publication date
CN106871837A (en) 2017-06-20

Similar Documents

Publication Publication Date Title
Calautit et al. A validated design methodology for a closed-loop subsonic wind tunnel
Metzger et al. A comparative study of near-wall turbulence in high and low Reynolds number boundary layers
Yu et al. Initial validation of mobile-structural health monitoring method using smartphones
CN202304773U (en) Flatness detector
CN201740777U (en) Rapid measurement system for measuring slope soil erosion
US20070052493A1 (en) Method and system for monitoring power flow through an electric power transmission line
Rahmatian et al. 230 kV optical voltage transducers using multiple electric field sensors
US8155921B2 (en) Power transmission line dip measurement method
CN102645173A (en) Multi-vision-based bridge three-dimensional deformation monitoring method
CN102495413B (en) Method for acquiring transmission line tower coordinate
CN104237977B (en) A kind of automatic weather station fault processing system
CN204007499U (en) A kind of novel bridge structural deflection automatic monitoring system
CN102879639A (en) Real-time frequency measuring method in power system
CN102749104B (en) Method for accurately measuring gas flow and liquid flow in gas and liquid mixed fluid
CN104049001B (en) Vertical profit phase content based on frequency complex network is measured and verification method
CN106121622B (en) A kind of Multiple faults diagnosis approach of the Dlagnosis of Sucker Rod Pumping Well based on indicator card
CN104316024A (en) Simple cascading camera chain measuring method and system for monitoring multipoint settlement
CN104820759A (en) Data acquisition method and system of pipeline facility
CN104155586B (en) Transformer partial discharge ultrasonic vector array positioning device and manufacturing method thereof
CN101609136B (en) Voltage transformer secondary voltage drop tester and phase-angle difference testing method thereof
Spencer Jr et al. Next generation wireless smart sensors toward sustainable civil infrastructure
CN104215413B (en) Long-term monitoring method applicable to deflection deformation of beam of historic building
CN103644850A (en) Soil slope surface displacement monitoring and safety early warning method
CN205037898U (en) Perpendicularity detection device for construction
CN203298881U (en) Flexible temperature measuring device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant