CN106871837A - Sag measuring method and device - Google Patents

Sag measuring method and device Download PDF

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Publication number
CN106871837A
CN106871837A CN201710077138.5A CN201710077138A CN106871837A CN 106871837 A CN106871837 A CN 106871837A CN 201710077138 A CN201710077138 A CN 201710077138A CN 106871837 A CN106871837 A CN 106871837A
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CN
China
Prior art keywords
transmission pressure
tangent line
inclination angle
sag
line inclination
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CN201710077138.5A
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Chinese (zh)
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CN106871837B (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
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郑州信工智能化系统有限公司
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    • 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

A kind of sag measuring method and device are the embodiment of the invention provides, belongs to technical field of power transmission.Methods described includes:Obtain the horizontal range 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 range, the first tangent line inclination angle, the second tangent line inclination angle and the first preset rules, the sag of the transmission pressure is obtained.The sag of accurate measurement transmission pressure is realized with this.

Description

Sag measuring method and device
Technical field
The present invention relates to technical field of power transmission, in particular to a kind of sag measuring method and device.
Background technology
Sag is a key index of ultra-high-tension power transmission line safe operation.Now common sag measuring method has observation Two kinds of method and electronic surveying method.The conventional instrument of observation method has sag plate, theodolite etc., but the measurement of sag plate needs specialty There are the abundant human users using experience, and precision is difficult to quantify;The operating process of theodolite is cumbersome, and measurement result is not also true It is fixed.The general elder generation's founding mathematical models of electronic surveying method, whether accurate catenary equation, or the parabola side for simplifying version Journey, is required for two differences in height of hitch point of known lead wire and earth wire.In some applications and patent, this parameter is but directly neglected Or exhale the title discrepancy in elevation as the difference in height of hitch point with power transmission tower, this computational methods can obviously cause sag certainty of measurement Deviation, if in the occasion that geographical environment is complicated, or even triggers security incident.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of sag measuring method and device, above-mentioned to improve Problem.To achieve these goals, the technical scheme that the present invention takes is as follows:
In a first aspect, the embodiment of the invention provides a kind of sag measuring method, transmission pressure is applied to, the transmission of electricity is led The first end of line is arranged at the first end of the first power transmission tower, and the second end of the transmission pressure is arranged at the first of the second power transmission tower End, the first end of the transmission pressure is provided with the first hitch point, and the second end of the transmission pressure is provided with the second hitch point, Methods described includes:Obtain the horizontal range between first hitch point and second hitch point;Described first is obtained to hang First tangent line inclination angle of hanging point and the second tangent line inclination angle of second hitch point;Based on the horizontal range, described first Tangent line inclination angle, the second tangent line inclination angle and the first preset rules, obtain the sag of the transmission pressure.
Second aspect, the embodiment of the invention provides a kind of sag measuring device, be applied to transmission pressure, and the transmission of electricity is led The first end of line is arranged at the first end of the first power transmission tower, and the second end of the transmission pressure is arranged at the first of the second power transmission tower End, the first end of the transmission pressure is 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 the level between first hitch point and second hitch point 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;Sag obtaining unit, for based on the horizontal range, the first tangent line inclination angle, the second tangent line inclination angle And first preset rules, obtain the sag of the transmission pressure.
A kind of sag measuring method and device are the embodiment of the invention provides, transmission pressure, the transmission pressure is applied to First end be arranged at the first end of the first power transmission tower, the second end of the transmission pressure is arranged at the first of the second power transmission tower End, the first end of the transmission pressure is provided with the first hitch point, and the second end of the transmission pressure is provided with the second hitch point, Methods described includes:Obtain the horizontal range between first hitch point and second hitch point;Described first is obtained to hang First tangent line inclination angle of hanging point and the second tangent line inclination angle of second hitch point;Based on the horizontal range, described first Tangent line inclination angle, the second tangent line inclination angle and the first preset rules, obtain the sag of the transmission pressure.Realized accurately with this Measure the sag of transmission pressure.
Other features and advantages of the present invention will illustrate in subsequent specification, also, partly become from specification It is clear that or being understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by saying for being write Specifically noted structure is realized and obtained in bright book, claims and accompanying drawing.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of structured flowchart that can be applied to the electronic equipment in the embodiment of the present application;
The flow chart of the sag measuring method that Fig. 2 is provided for first embodiment of the invention;
The force analysis schematic diagram of the transmission pressure of the sag measuring method that Fig. 3 is provided for first embodiment of the invention;
The transmission pressure of sag measuring method and the Mathematical Modeling of power transmission tower that Fig. 4 is provided for first embodiment of the invention show It is intended to;
The schematic diagram of calculation result of the sag measuring method that Fig. 5 is provided for first embodiment of the invention;
The structured flowchart of the sag measuring device that Fig. 6 is provided for second embodiment of the invention.
Specific embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Generally exist The component of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged and designed with a variety of configurations herein.Cause This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below Scope, but it is merely representative of selected embodiment of the invention.Based on embodiments of the invention, those skilled in the art are not doing The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that:Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.Meanwhile, of the invention In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
Fig. 1 is refer to, Fig. 1 shows a kind of structured flowchart of the electronic equipment 100 that can be applied in the embodiment of the present application. The electronic equipment 100 can as user terminal, or computer or server, the user terminal can for mobile phone or Panel computer.As shown in figure 1, electronic equipment 100 can include memory 110, storage control 111, processor 112 and sag Measurement apparatus.
Directly or indirectly electrically connected between memory 110, storage control 111, each element of processor 112, to realize The transmission or interaction of data.For example, between these elements electricity can be realized by one or more communication bus or signal bus Connection.Sag measuring method can be stored in memory including at least one in the form of software or firmware (firmware) respectively Software function module in 110, such as software function module or computer program that described sag measuring device includes.
Memory 110 can store various software programs and module, the sag measurement side that such as the embodiment of the present application is provided Method and the corresponding programmed instruction/module of device.Processor 112 by run storage software program in the memory 110 and Module, so as to perform various function application and data processing, that is, realizes the sag measuring method in 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 storage (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only Memory, PROM) is erasable Read-only storage (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, with 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.;Can also be digital signal processor (DSP), application specific integrated circuit (ASIC), ready-made programmable Gate array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hardware components.It can To realize or perform the disclosed each method in the embodiment of the present application, step and logic diagram.General processor can be micro- Processor or the processor can also be any conventional processors etc..
First embodiment
Fig. 2 is refer to, a kind of sag measuring method is the embodiment of the invention provides, transmission pressure, the transmission of electricity is applied to The first end of wire is arranged at the first end of the first power transmission tower, and the second end of the transmission pressure is arranged at the of the second power transmission tower One end, the first end of the transmission pressure is provided with the first hitch point, and the second end of the transmission pressure is provided with the second suspension Point, methods described includes:
Step S200:Obtain the horizontal range between first hitch point and second hitch point;
Step S210:Obtain the first tangent line inclination angle of first hitch point and the second tangent line of second hitch point 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, it is the premise into row conductor mechanical analysis to be described with what equation from mathematical angle.As it is assumed that It is flexible cable to regard wire, then can be analyzed according to the catenary relation in rational mechanics, will wire erection it is skyborne several What form is considered as stretched wire form, and the equation being derived there is catenary equation.
Be origin of coordinates O with the minimum point of transmission pressure, founding mathematical models, transmission pressure take up an official post take a point D (x, Y), the OD sections of stress relation of transmission pressure is analyzed, as shown in figure 3, OD sections of transmission pressure is kept balance, wherein D by three power Point bears pulling force for Tx=σxS, pulling force Tx and transmission pressure contact of a curve, are θ with horizontal direction angle;O points bear pulling force for T00S, T0It is the tangential direction of transmission pressure O points, with horizontal direction parallel, is also called Horizontal Tension;The OD section leads lotuses of itself It is G=gSL to carryx, LxIt is the arc length of OD section leads.
From statics balance condition, OD section leads horizontal component, the algebraical sum of vertical stress component are 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 carried for the ratio of transmission pressure, unit:N/m·mm2
Wherein, m0It is every kilometer of weight of transmission pressure, unit is kg/km;S is transmission pressure sectional area, and unit is mm2
Above vertical stress component is compared with the expression formula of horizontal component, then the slope that can obtain wire any point D is:
Then it is to take the derivative of any point on curve for tangent slope using the knowledge of calculus, variables separation tries to achieve D The expression formula of point ordinate is catenary equation formula (2):
Wherein,For:
In circuit design, for the convenience on calculating, need not typically use 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 points):
According toPhysical significance, it can be determined that its numerical value be much smaller than 1, so being taken approximately to infinite series expression formula (3) It is worth and is:
It follows that catenary equation (4) is common parabolic equation after simplifying.
Step S220:It is pre- based on the horizontal range, the first tangent line inclination angle, the second tangent line inclination angle and first If regular, the sag of the transmission pressure is obtained.
Minimum point with the transmission pressure as the origin of coordinates, the tangential direction with the minimum point of the transmission pressure as X-axis, By the origin of coordinates and the direction vertical with the X-axis is Y-axis, to be based on The sag of the transmission pressure measurement point is obtained, wherein, H is the sag of the transmission pressure measurement point, and x is the measurement point Abscissa, l is the horizontal range, θ1It is the first tangent line inclination angle, θ2It is the second tangent line inclination angle.
Specifically, refer to Fig. 4, T1 represents the first power transmission tower, T2 represents that adjacent with first power transmission tower second is defeated Electric tower, C1 represents transmission pressure, dangles between the first power transmission tower and the second power transmission tower, and A points are first power transmission tower and institute The tie point of transmission pressure is stated, B points are the tie point of second power transmission tower and the transmission pressure.L is between A points and B points Horizontal range, Δ h is difference in height between A points and B points.It is understood that A points are the first hitch point, B points are second outstanding Hanging point.
Minimum point with the transmission pressure C1 is origin of coordinates O, with the tangential direction of the minimum point of the transmission pressure It is X-axis, by the origin of coordinates and the direction vertical with the X-axis is Y-axis, to set up XOY rectangular co-ordinates as shown in Figure 4 System, A points tangent line and angle of X-axis on transmission pressure are θ1, θ1It is the first tangent line inclination angle;B point tangent lines on transmission pressure It is θ with the angle of X-axis2, θ2It is the second tangent line inclination angle.Set up an office A (x1,y1), point B (x2,y2), point A and point B meets (4) Parabolic equation, orderFollowing six equation group can be set up simultaneously:
y′1=f ' (x1)=2 β x1=-tan θ1(7)
y′2=f ' (x2)=2 β x2=tan θ2(8)
x2-x1=l (9)
y2-y1=Δ h (10)
Equation (9) the right and left is multiplied by 2 β simultaneously, then equation (7) and equation (8) is 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:
Bring equation (12) into equation (7) and (8) respectively, obtain x1And x2Expression formula:
Coordinate according to point A and point B sets up straight line AB equations:
Abbreviation is carried out to equation (15), equation (16) is obtained:
G (x)=β (x1+x2)x-βx1x2 (16)
According to the definition of sag, any point sag H is on transmission pressure:
I.e.
In formula (17), x is the abscissa of the measurement point.
When the shelves midpoint that the measurement point is first hitch point and second hitch point, it is based onSag in the middle of the shelves of the transmission pressure is obtained, wherein, H1It is the transmission pressure Sag in the middle of shelves, l is the horizontal range, θ1It is the first tangent line inclination angle, θ2It is the second tangent line inclination angle.
Specifically, when the shelves midpoint that the measurement point is first hitch point and second hitch point, i.e.,When:
Abbreviation is obtained:
When x is 0, it is based onThe minimum point sag of the transmission pressure is obtained, its In, H2It is the minimum point sag of the transmission pressure, l is the horizontal range, θ1It is the first tangent line inclination angle, θ2For described Second tangent line inclination angle.
Specifically, when the measurement point is minimum point, in formula (17), it is 0 to make x, obtains the transmission pressure most Low spot sag:
Methods described also includes:Based on the horizontal range, the first tangent line inclination angle, the 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 a kind of implementation method, it is based onObtain first end and the institute of the transmission pressure The difference in height between the second end of transmission pressure is stated, wherein, Δ h is the difference in height, and l is the horizontal range, θ1For described First tangent line inclination angle, θ2It is the second tangent line inclination angle.
Specifically, expression formula (12), (13), (14) are brought into equation (10), is calculated:
Abbreviation is obtained:
Based on the horizontal range, the first tangent line inclination angle, the difference in height and the 3rd preset rules, obtain described The sag of transmission pressure.
Specifically, it is based onThe sag of the transmission pressure is obtained, wherein, H3For described defeated The sag of electric lead, Δ h is the difference in height, and l is the horizontal range, θ1It is the first tangent line inclination angle.
Specifically, according to formula (18), (19), calculating derivation can obtain:
In known l, θ1, in the case of Δ h, it is possible to use formula (20) is calculated and obtains sag in the middle of shelves.
The first tangent line inclination angle theta of A points is measured by existing survey tool1, the second tangent line inclination angle theta of B points2, A points and B points Horizontal range l;Based on above formula, and obtain the sag or difference in height of transmission pressure.Realize that accurate measurement transmission of electricity is led with this The sag of line.For example, it is 90 meters to measure two adjacent power towers i.e. A points and B points spacing, A points are drawn by 25 measurements First tangent line inclination angle theta1With the second tangent line inclination angle theta of B points2, and it is calculated sag, minimum point sag in the middle of difference in height, shelves, knot Fruit is as shown in figure 5, A points inclination angle represents the first tangent line inclination angle theta of A points1, unit is degree;B points inclination angle represents the second tangent line of B points Inclination angle theta2, unit is degree.Wherein, measurement show that the maximum at the first tangent line inclination angle of A points is 6.362 degree, and minimum value is 6.158 Degree, it is 0.204 degree to differ;Wherein, measurement show that the maximum at the second tangent line inclination angle of B points is 10.397 degree, and minimum value is 10.173 degree, it is 0.224 degree to differ;The maximum for measuring difference in height is 3.306102988 meters, and minimum value is 3.068293583 Rice, it is 0.237809405 meter to differ;3.317850922 meters of the maximum of sag in the middle of shelves is measured, minimum value is 3.231899946 meters, it is 0.084022143 meter to differ;The maximum for measuring minimum point sag is 3.120269431 meters, minimum It is 3.031507539 meters to be worth, and it is 0.083838669 meter to differ.By repeatedly measurement, counting accuracy is improved.
It should be noted that because on Practical Project, the distance between general adjacent power tower is more than 200 meters, near There is more than 100 meters, remote has more than 500 meters.Erecting bed measuring apparatus are as follows in practice:It is attached in the actual suspension point of the first power transmission tower Closely fix a measurement apparatus, as surveying marker point A, surveying marker 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 measurement apparatus, as surveying marker point B, surveying marker 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 surveying marker point A is measured in real time using two measurement apparatus Tangent line inclination angle and the flat distance of A, B WAWQ with surveying marker point B, so as to obtain the sag of transmission pressure.
A kind of sag measuring method is the embodiment of the invention provides, transmission pressure, the first of the transmission pressure is applied to End is arranged at the first end of the first power transmission tower, and the second end of the transmission pressure is arranged at 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:Obtain the horizontal range 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 range, first tangent line Angle, the second tangent line inclination angle and the first preset rules, obtain the sag of the transmission pressure.Realize that accurate measurement is defeated with this The sag of electric lead.
Second embodiment
Fig. 6 is referred to, a kind of sag measuring device 300 is the embodiment of the invention provides, transmission pressure is applied to, it is described defeated The first end of electric lead is arranged at the first end of the first power transmission tower, and the second end of the transmission pressure is arranged at the second power transmission tower First end, the first end of the transmission pressure is provided with the first hitch point, and the second end of the transmission pressure is provided with second and hangs Hanging point, described device 300 includes:
First acquisition unit 310, for obtaining the horizontal range between first hitch point and second hitch point.
Second acquisition unit 320, for the first tangent line inclination angle for obtaining first hitch point and second suspension Second tangent line inclination angle of point.
Sag obtaining unit 330, for being inclined based on the horizontal range, the first tangent line inclination angle, second tangent line Angle and the first preset rules, obtain the sag of the transmission pressure.
Specifically, the sag obtaining unit 330, for the minimum point of the transmission pressure as the origin of coordinates, with institute The tangential direction of minimum point of transmission pressure is stated for X-axis, with by the origin of coordinates and the direction vertical with the X-axis is Y Axle, is based on Obtain the transmission pressure The sag of measurement point, wherein, H is the sag of the transmission pressure measurement point, and x is the abscissa of the measurement point, and l is the water Flat distance, θ1It is the first tangent line inclination angle, θ2It is the second tangent line inclination angle.
It should be noted that each unit in the present embodiment can be by software code realization, now, above-mentioned each unit Can be stored in memory 110.Above each unit can equally be realized by hardware such as IC chip.
The technique effect of sag measuring device provided in an embodiment of the present invention 300, its realization principle and generation and foregoing side Method embodiment is identical, is to briefly describe, and device embodiment part does not refer to part, refers in corresponding in preceding method embodiment Hold.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it is also possible to pass through Other modes are realized.Device embodiment described above is only schematical, for example, flow chart and block diagram in accompanying drawing Show the device of multiple embodiments of the invention, the architectural framework in the cards of method and computer program product, Function and operation.At this point, each square frame in flow chart or block diagram can represent one the one of module, program segment or code Part a, part for the module, program segment or code is used to realize holding for the logic function for specifying comprising one or more Row instruction.It should also be noted that at some as in the implementation replaced, the function of being marked in square frame can also be being different from The order marked in accompanying drawing occurs.For example, two continuous square frames can essentially be performed substantially in parallel, they are sometimes Can perform in the opposite order, this is depending on involved function.It is also noted that every in block diagram and/or flow chart The combination of the square frame in individual square frame and block diagram and/or flow chart, can use the function or the special base of action for performing regulation Realized in the system of hardware, or can be realized with the combination of computer instruction with specialized hardware.
In addition, each functional module in each embodiment of the invention can integrate to form an independent portion Divide, or modules individualism, it is also possible to which two or more modules are integrated to form an independent part.
If the function is to realize in the form of software function module and as independent production marketing or when using, can be with Storage is in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter Calculation machine software product is stored in a storage medium, including some instructions are used to so that a computer equipment (can be individual People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the invention. And foregoing storage medium includes:USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.Need Illustrate, herein, such as first and second or the like relational terms be used merely to by an entity or operation with Another entity or operation make a distinction, and not necessarily require or imply these entities or there is any this reality between operating The relation or order on border.And, term " including ", "comprising" or its any other variant be intended to the bag of nonexcludability Contain, so that process, method, article or equipment including a series of key elements are not only including those key elements, but also including Other key elements being not expressly set out, or it is this process, method, article or the intrinsic key element of equipment also to include. In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including the key element Process, method, article or equipment in also there is other identical element.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.It should be noted that:Similar label and letter exists Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, then it is not required in subsequent accompanying drawing It is further defined and is explained.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating In any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that Also there is other identical element in process, method, article or equipment including the key element.

Claims (10)

1. a kind of sag measuring method, it is characterised in that be applied to transmission pressure, the first end of the transmission pressure is arranged at The first end of one power transmission tower, the second end of the transmission pressure is arranged at 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 methods described includes:
Obtain the horizontal range 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 range, the first tangent line inclination angle, the second tangent line inclination angle and the first preset rules, institute is obtained State the sag of transmission pressure.
2. method according to claim 1, it is characterised in that described to be inclined based on the horizontal range, first tangent line Angle, the second tangent line inclination angle and the first preset rules, obtain the sag of the transmission pressure, including:
Minimum point with the transmission pressure as the origin of coordinates, the tangential direction with the minimum point of the transmission pressure as X-axis, with It is Y-axis by the origin of coordinates and the direction vertical with the X-axis, is based on The sag of the transmission pressure measurement point is obtained, wherein, H is the sag of the transmission pressure measurement point, and x is the measurement point Abscissa, l is the horizontal range, θ1It is the first tangent line inclination angle, θ2It is the second tangent line inclination angle.
3. method according to claim 2, it is characterised in that when the measurement point is first hitch point and described the During the shelves midpoint of two hitch points, it is based onSag in the middle of the shelves of the transmission pressure is obtained, Wherein, H1It is sag in the middle of the shelves of the transmission pressure, l is the horizontal range, θ1It is the first tangent line inclination angle, θ2For institute State the second tangent line inclination angle.
4. method according to claim 2, it is characterised in that when x is 0, be based on The minimum point sag of the transmission pressure is obtained, wherein, H2Be the minimum point sag of the transmission pressure, l be the level away from From θ1It is the first tangent line inclination angle, θ2It is the second tangent line inclination angle.
5. method according to claim 1, it is characterised in that methods described also includes:
Based on the horizontal range, the first tangent line inclination angle, the 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.
6. method according to claim 5, it is characterised in that described to be inclined based on the horizontal range, first tangent line Angle, the second tangent line inclination angle and the second preset rules, obtain the first end and the transmission pressure of the transmission pressure Difference in height between second end, including:
It is based onObtain between the first end of the transmission pressure and the second end of the transmission pressure Difference in height, wherein, Δ h be the difference in height, l be the horizontal range, θ1It is the first tangent line inclination angle, θ2It is described Two tangent line inclination angles.
7. method according to claim 6, it is characterised in that methods described also includes:
Based on the horizontal range, the first tangent line inclination angle, the difference in height and the 3rd preset rules, the transmission of electricity is obtained The sag of wire.
8. method according to claim 7, it is characterised in that described to be inclined based on the horizontal range, first tangent line Angle, the difference in height and the 3rd preset rules, obtain the sag of the transmission pressure, including:
It is based onThe sag of the transmission pressure is obtained, wherein, H3It is the arc of the transmission pressure Hang down, Δ h is the difference in height, l is the horizontal range, θ1It is the first tangent line inclination angle.
9. a kind of sag measuring device, it is characterised in that be applied to transmission pressure, the first end of the transmission pressure is arranged at The first end of one power transmission tower, the second end of the transmission pressure is arranged at 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 range 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;
Sag obtaining unit, for based on the horizontal range, the first tangent line inclination angle, the second tangent line inclination angle and One preset rules, obtain the sag of the transmission pressure.
10. device according to claim 9, it is characterised in that the sag obtaining unit, for the transmission pressure Minimum point be the origin of coordinates, the tangential direction with the minimum point of the transmission pressure as X-axis, with by the origin of coordinates simultaneously The direction vertical with the X-axis is Y-axis, is based onObtain The sag of the transmission pressure measurement point, wherein, H is the sag of the transmission pressure measurement point, and x is the horizontal seat of the measurement point Mark, l is the horizontal range, θ1It is the first tangent line inclination angle, θ2It is the second tangent line inclination angle.
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