CN115600048B - Sag observation method, device and system with adjacent wire spacing compensation function - Google Patents
Sag observation method, device and system with adjacent wire spacing compensation function Download PDFInfo
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Abstract
The invention relates to the technical field of sag observation, in particular to a sag observation method, device and system with adjacent wire spacing compensation. When the method simultaneously comprises an X # lead and an adjacent N # lead in a line gear which sequentially comprises a first tower and a second tower along the advancing direction of a line, different N # leads are sequentially numbered according to positive integers in the direction far away from the X # lead; maximum observation sag based on X # conductor
Obtaining the maximum observation sag of N # conductor
In time, the wire spacing is compensated. The device is used for realizing the method, and the system is provided with the device. The invention can realize better compensation of the error aiming at the error of the observation data caused by the difference of the distance between the split conductors at different positions in the length direction of the conductor.
Description
Technical Field
The invention relates to the technical field of sag observation, in particular to a sag observation method, device and system with adjacent wire spacing compensation.
Background
In chinese patent publication nos. CN112833762A, CN 112833763A, CN 112833764A, etc., a device, a method, a system, etc. for measuring sag of an overhead line based on an on-line measuring device are disclosed, which include sag observation of a single wire and sag observation of adjacent wires.
As shown in fig. 1, in the observation of the sag of a single wire, the sag can be divided into 3 sections in the vertical projection plane, the first section is the height difference between the hanging point and the measuring point (the vertical distance between Ha and Hc in fig. 1), the second section is the height difference between the hanging point and the measuring point at the projection point of the connecting line of the hanging point (the vertical distance L1 between the point a and the connecting line AB in fig. 1 at the corresponding position of point c), and the 3 rd section is the height difference between the measuring point c and the wire (the vertical distance between the point c and the # X wire in fig. 1); it should be noted that fig. 1 is directly cited in the patent document with chinese publication No. CN112833762A, and in fact, c in fig. 1 is a measurement point, which may be higher or lower than the hanging point Ha, and should be actually located at the circle marked at Hc. That is, the sag structure at the measurement point c is the distance from the wire to the measurement point c, the distance from the measurement point c to the hanging point Ha, and the distance from the hanging point Ha to the corresponding position of the connection line AB. The calculation formula of the height difference L1 of the connecting projection points of the hanging points and the measuring points c on the hanging points is L1= L2 × Lc/Lj.
Referring to fig. 2, when calculating the height difference L1 between the hanging point and the projection point of the measurement point on the connecting line of the hanging point, the values of Lc and Lj need to be obtained in the horizontal projection plane, and in fig. 2, lc is L AC Lj is L AC And L BC The sum of (1).
In the existing document, after the acquisition of the sag at the measurement point c is completed, the maximum observed sag f needs to be further acquired x 1/2 And maximum standard sag f 0 1/2 And the guidance of the wire tightening construction is realized by calculating the difference between the two.
The sag observation of a single wire mainly can be better suitable for sag observation of a tangent tower and a tangent tower, and is difficult to be suitable for sag observation of a tension tower, a tangent tower or a tangent tower and a tension tower, mainly because the tension tower is arranged at a corner of an overhead line, and the design of the corner makes it difficult to calculate and obtain related data by adopting the method, which is specifically embodied as follows:
1. when the span Lj between the hanging points A and B is calculated, although the influence of the cross arm width of the tension tower and the pulley width on the offset of the hanging point position is considered, the influence of the deflection angle of the cross arm of the tension tower on the actual span Lj at different hanging points is not considered;
2. calculating the maximum observed sag f x 1/2 When the design span L is used as a reference, but the design span L in engineering design is used for representing the distance between the central points of adjacent tower positions, when the maximum observation sag in a wire rod with a strain tower is applied, the actual span of a line positioned on the inner side of a corner is smaller than the design span L, and the actual span of a line positioned on the outer side of the corner is smaller than the design span LThe actual span is larger than the design span L, which causes a large error.
According to the method, in the observation of the sag of the adjacent wire, the height difference between the adjacent wire and the current single wire is obtained through radar scanning equipment, the sag of the adjacent wire is further obtained, and in order to guarantee the data validity, the judgment of the distance between the adjacent wire and the current single wire is introduced. However, this method is difficult to be applied to the overhead line stringing construction for the split sub-conductors, because during the actual overhead line stringing construction for the split sub-conductors, a plurality of split sub-conductors at the front stage tower are firstly fixed at the hanging point through the spacer, then all the split sub-conductors are pulled to the rear stage tower through the plate moving device, and then all the split sub-conductors are fixed at the hanging point of the rear stage tower through the spacer. This results in:
1. the significance of sag observation in stringing construction mainly lies in that the maximum observation sag f needs to be ensured x 1/2 With maximum standard sag f 0 1/2 Substantially achieving consistency; however, during the process of wire tightening construction, one ends of the plurality of split sub-conductors are spatially distributed in the shape of a spacer, and the other ends are positioned on the same horizontal plane; this means that the maximum standard sag f of the different bundle conductors 0 1/2 Differences in elevation should exist when actual construction is completed; however, in the present measurement mode, the maximum standard sag f 0 1/2 The sag observation value of a single conductor is obtained through inverse calculation, namely the difference of the sag of different conductor bundle conductors in the stringing construction cannot be considered in the mode;
2. when the validity of the numerical value is judged based on the distance between the adjacent wire and the current single wire, the distances between the two ends of the plurality of split sub-wires may be inconsistent in the wire tightening construction, so that the data validity may be misjudged.
In addition, due to the existence of the swinging and vibration characteristics of the line, it is difficult to take a certain single-measurement value as a final sag observation value, and although the method adopts an average-based mode to overcome the error influence of the swinging and vibration characteristics on the sag observation value, the method only adopts an average value mode, and further accuracy of data is difficult to guarantee.
Disclosure of Invention
The invention provides a sag observation method with adjacent wire spacing compensation, which can realize better compensation of errors of observation data caused by different distances of split wires at different positions in the length direction of the wires.
According to the sag observation method with the adjacent wire spacing compensation, when the X # wires and the adjacent N # wires are simultaneously arranged in the wire rods which are the first tower and the second tower in sequence along the advancing direction of a circuit, different N # wires are sequentially numbered according to positive integers in the direction far away from the X # wires; maximum observation sag based on X # conductor
Obtaining the maximum observation sag->
The method specifically comprises the following steps:
step SA, setting a measuring point C at the position of the X # conductor, and acquiring the maximum observation sag of the X # conductor
；
Step SB, arranging radar scanning equipment at the measuring point C, and acquiring the vertical distance h between the measuring point C and the X # lead and the inclination angle of the perpendicular line from the measuring point C to the X # lead in the left and right directions of the X # lead
And an inclination in the front-rear direction->
And the radar scanning distance between the measuring point C and all adjacent N # conductors->
And corresponding radar scan angle/>
；
Step SC, obtaining the observed horizontal distance between the X # conducting wire and all the adjacent N # conducting wires at a computing unit
，
；
Step SD, classifying the data collected in step SB at a classification unit, specifically,
wherein N is the total number of N # conducting wires;
step SE, judging the data processed in the step SD one by one at a judging unit, wherein the data which accord with a judging formula are credible data and output, and the data which do not accord with the judging formula are incredible data and are discarded; the decision formula is specifically as follows,
wherein the content of the first and second substances,
represents the theoretical horizontal distance between the X # wire and the N # wire, D is the wire diameter, and is greater than or equal to>
Is the theoretical horizontal distance between adjacent wires numbered n and n-1;
step SF, at a processing unit, according to the formula
Obtaining the maximum observation sag->
。
By the method, the classification of multiple groups of data of the radar scanning equipment in a single scanning period can be preferably realized, namely, the scanned data can be associated and corresponding to the corresponding wire when a plurality of adjacent wires are provided, so that the maximum observation sag of a plurality of adjacent N # wires can be preferably realized
The synchronous output of (2).
Preferably, when the X # conductor is a split conductor, the spacing at the spacer is based on the spacing of adjacent sub-conductors by a spacing compensation unit
The spacing of adjacent partial lines at the transfer device->
The horizontal distance between the measuring point C and the corresponding hanging point->
And the actual gear distance>
For the theoretical horizontal distance->
Compensation is performed. Thereby preferably realizing the theoretical horizontal distance
And (4) correcting.
Preferably, when the X # conductor is a quad-split conductor, and the X # conductor is the leftmost conductor, the pitch compensation unit is configured to compensate for the theoretical horizontal distance based on the following formula
The compensation is carried out, and the compensation is carried out,
by the above, the compensation of the adjacent spacing of the four-split conductors can be preferably realized.
Preferably, when the X # conductor is a six-split conductor, and the X # conductor is the leftmost conductor, the pitch compensation unit is configured to compensate for the theoretical horizontal distance based on the following formula
Is compensated and is taken out>
By the above, the compensation of the adjacent spacing of the six-split conductor can be preferably realized.
Preferably, when the X # conductor is an eight-split conductor, and the X # conductor is the leftmost conductor, the pitch compensation unit is configured to compensate for the theoretical horizontal distance based on the following formula
The compensation is carried out and the compensation is carried out,
by the above, the compensation of the adjacent spacing of the eight-split conductors can be preferably realized.
Preferably, for the tension resistant section, the maximum observed sag is determined in step SA
Compensation is performed. The accuracy of the data can be improved better.
Preferably, in step SF, sag deviation is acquired and compensated. The accuracy of the data can be improved better.
Preferably, the step SB-SE is repeated a plurality of times to obtain a plurality of radar scan ranges corresponding to respective N # conductors
And scanning the distances with the plurality of radars>
Is used as the basis for the calculation of step SF. The accuracy of the data can be improved better.
In addition, the present invention provides a sag observation device for implementing any one of the above-described sag observation methods, including:
radar scanning equipment for realizing the collection of relevant data including the step SB;
a calculation unit for implementing calculation of the relevant data including step SC;
a classification unit for implementing classification of the relevant data including step SD;
a determination unit for implementing a determination of the relevant data including step SE; and
and the processing unit is used for realizing the processing and output of the related data including the step SF.
Through the method, compensation and judgment of sag observation data can be preferably carried out on the adjacent sub-wires in the split wires, so that the accuracy of data can be preferably realized.
In addition, the invention also provides a sag observation system which is provided with any one of the sag observation devices.
Drawings
FIG. 1 is a schematic diagram of a conventional sag observation of a single wire;
FIG. 2 is a schematic diagram illustrating conventional calculation of sag observation of a single wire;
FIG. 3 is a schematic diagram of a prior art sag observation of adjacent wires;
FIG. 4 is a schematic view of the sag observation method in example 1;
fig. 5 is a schematic view of sag compensation of a four-split conductor in example 1;
fig. 6 is a schematic view of sag compensation of a six-split conductor in example 1;
fig. 7 is a schematic view of sag compensation of an eight-split conductor in example 1;
FIG. 8 is a schematic view of a sag observation system according to example 1;
fig. 9 is a schematic view of the pitch compensation of a quadrifilar conductor in example 2;
fig. 10 is a schematic view of the pitch compensation of a six-split conductor in example 2;
fig. 11 is a schematic view of the pitch compensation of the eight-split conductor in example 2;
FIG. 12 is a schematic view of a sag observation system according to embodiment 2;
fig. 13 is a schematic view of the sag observation system in embodiment 3.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.
Referring to fig. 1 and 2, in the case of measuring the sag of a conducting wire between a first tower and a second tower by using the scheme of chinese patent publication nos. CN112833762A, CN 112833763A, CN 112833764A, etc., and providing the measuring point C by using the on-line sag observation device, the center points of the tower positions of the first tower and the second tower are respectively the center points of the tower positions of the first tower and the second tower
And &>
Recording the certain wire as an X # wire, recording hanging points of the X # wire at a first tower and a second tower as A and B respectively, and recording the direction from the first tower to the second tower as a line advancing direction; setting a measuring point C on the X # line in accordance with the formula>
The observed sag->
。
In the above-mentioned formula,
is the height of the hanging point A, is greater than or equal to>
For measuring the height of point C, < >>
Is the height difference between the projection point of the measurement point C on the connecting line of the hanging points A and B and the hanging point A and is used for determining the position of the measured point C on the connecting line of the hanging points A and B>
The height difference between the point C and the X # wire is measured. />
Wherein the content of the first and second substances,
，/>
is the height difference between the hanging point A and the hanging point B>
Is the horizontal distance between the measurement point C and the hanging point A>
Is the actual gear span.
Wherein the content of the first and second substances,
(ii) a In the formula, is>
Is the central point of the tower position>
The distance between the base and the hanging point A on the horizontal projection plane is adjusted>
Is the central point of the tower position>
Is at a distance from the measuring point C on the horizontal projection plane>
Is->
The projection angle on the horizontal projection plane.
In obtaining the observed sag
Then, the maximum observation sag which has reference significance to the line tightening construction needs to be acquired>
And the maximum standard sag->
And the guidance of the wire tightening construction can be better realized by calculating the deviation of the two.
Wherein the content of the first and second substances,
，/>
. Wherein r is the wire specific load, and T is the wire tension.
Referring to fig. 3, in the above prior art, a radar scanning device can be further disposed at the on-line sag observation device, so as to pass the acquired maximum observation sag of the current X # wire
And obtaining the maximum observation sag of the rest adjacent N # conducting wires. The method specifically comprises the steps of setting a radar detection point at a measurement point C, and acquiring the vertical distance h between the radar detection point and an X # lead and the inclination angle of the vertical line from the radar detection point to the X # lead in the left and right directions of the X # lead>
And an inclination in the front-rear direction>
The distance between the radar detection point and the radar scanning point of the N # line->
And the scanning angle of the connecting line of the radar detection point and the radar scanning point
. Can be based on the formula>
Obtaining the maximum observation sag->
。
Example 1
In order to compensate for the large change of the actual span due to the corner of the tension tower in the tension section, the present embodiment provides a sag observation method with the sag compensation of the tension section, as shown in fig. 4.
In this embodiment, when observing sag of the X # conductor in the strain section sequentially including the first tower and the second tower along the forward direction of the line, it is noted that the hanging points of the X # conductor at the first tower and the second tower are respectively the hanging point a and the hanging point B, and the measuring point C is set at the X # conductor to observe sag, which includes the following steps:
step S1, inputting the angle of rotation of a tower I at an input unit
Tackle width at hanging point A>
The length of the cross arm is greater or less than>
And cross arm width->
The turning angle degree of the second tower->
Tackle width at hanging point B>
The length of the cross arm is greater or less than>
And cross arm width->
And left and right phases of the X # conductor;
wherein, the angle of rotation is
And the angle of rotation degree->
When the X # lead is positioned at the first tower and the second tower and rotates right along the advancing direction of the circuit, the positive number is obtained, and when the X # lead rotates left, the negative number is obtained;
wherein, the X # conducting wire is positioned at the left side of the advancing direction of the circuit and is a left phase, and the X # conducting wire is positioned at the right side of the advancing direction of the circuit and is a right phase;
s2, acquiring the actual span between the hanging point A and the hanging point B of the X # conductor through a computing unit
When the X # conducting wire is in the left phase,
when the X # conducting wire is in the right phase,
step S3, formula-based calculation unit
Acquiring a projection point of the measuring point C on a connecting line of the hanging points A and B and a height difference between the hanging points A and B;
wherein, the first and the second end of the pipe are connected with each other,
is the height difference between the hanging point A and the hanging point B>
The horizontal distance between the measuring point C and the hanging point A is measured;
step S4, formula-based calculation unit
Obtaining the observation arc and sag of the X # lead>
(ii) a Wherein it is present>
Is the height of the hanging point A, is greater than or equal to>
For measuring the height of point C, < >>
The height difference between the measuring point C and the X # conducting wire is measured;
step S5, formula-based calculation unit
Obtain the maximum observed sag->
And based on the formula->
Obtain the maximum standard sag->
(ii) a Wherein r is the wire specific load, and T is the wire tension.
S6, acquiring and outputting the sag deviation f through a processing unit, wherein f =
-/>
。
In this embodiment, the deviation between the actual span and the designed span of the X # conducting wire at the tension resistant section due to the corner of the tension resistant tower (tower one and/or tower two) can be preferably considered through the step S2, and the deviation can be preferably compensated through the correction of the computing unit, so that the accuracy of the sag observation can be effectively improved.
It is understood that the solution in the present embodiment is actually a further improvement of the solutions in the patents with chinese publications CN112833762A, CN 112833763A, CN 112833764A, etc., so that the duplicated portions in the present embodiment and the prior art will not be described in great detail.
It can be understood that, in step S1, the input parameters also relate to parameters such as tower position center, height difference of the lowest leg base of the iron tower, tower call height, pulley string length, and the like of the tower one and the tower two. And further realize the calculation of parameters such as the height of the hanging point A and the hanging point B. The specific steps are found in the above-mentioned patent documents, and are not described in detail in this embodiment.
Further, step S2The calculating unit comprises a first calculating module, a second calculating module, a third calculating module and an accumulating module, wherein the first calculating module, the second calculating module and the third calculating module are used for respectively acquiring the segment values of the X # conductor in a near tower section, a near tower section and a middle section, and the accumulating module is used for accumulating all segment calculated values to acquire the actual span
(ii) a The method specifically comprises the following steps of,
step S21, the actual gear distance of a section close to the tower is calculated through a first calculation module
When the X # conducting wire is in the left phase,
(ii) a When the X # conducting wire is in the right phase,
；
step S22, the actual gear distance of the second tower section is approached through the second calculation module
When the X # conducting wire is in the left phase,
(ii) a When the X # conducting wire is in the right phase,
；
step S23, calculating the actual gear distance of the middle section of the module through the third calculation module
，/>
；
Step S24, acquiring the actual gear distance through an accumulation module
，/>
；
Wherein, L1 and L2 are respectively set reference values of the X # conductor at a near-tower section and a near-tower section.
Through the steps S21-S24, the actual gear distance can be better realized
The parallel synchronous calculation can better improve the calculation speed and meet the actual construction condition.
Wherein, L1 and L2 can be both set to 30m, and of course, can also be adjusted according to the size of the designed span.
Particularly, it can be understood that the overhead transmission line actually has a plurality of towers in the extending direction of the line, and if the manner of steps S21 to S24 is not adopted, when calculating each line gear (between two towers), the related parameters at both ends of the line gear need to be calculated again, which results in that the tower shared by adjacent line gears is repeatedly calculated in two calculations.
In the above steps S21-S24, the calculation data of the second calculation module can be temporarily stored and used as the calculation value corresponding to "tower one" when the actual gear distance calculation of the next gear is performed. Namely:
in an initial state, the actual gear span of the first line gear is calculated firstly, and at the moment, the first calculating module, the second calculating module, the third calculating module and the accumulating module respectively act according to the steps S21-S24, so that the actual gear span of the first line gear is obtained;
thereafter, the calculation data of the second calculation module (i.e. the
) Is stored in a memory location (e.g., register);
then, for the adjacent second wireWhen the actual gear distance is calculated, only the second calculation module, the third calculation module and the accumulation module can act, and the second calculation module obtains the actual gear distance of a tower section corresponding to the second line gear
The third calculation module detects the actual gear shift in the middle section>
And the actual range close to the section of the tower->
Can be directly evaluated at the summation module in accordance with the formula>
Obtaining;
thereafter, the related data at the storage unit can be updated with the calculated value of the second calculation module at the second wire;
and then repeating the above processes to complete the calculation of the actual gear ranges of the third and subsequent line gears.
By the above, the number of times of calculation can be preferably reduced, and particularly, the measuring point C in the present embodiment is integrated at an on-line measuring device, and the on-line measuring device is powered by a battery, and by reducing the frequency of calculation, the endurance time of the on-line measuring device can be preferably increased.
The reference values set in the near-tower segment and the near-tower segment in different line profiles can be different or can be designed to be the same.
Further, in step S3, the calculation unit is based on the formula
The horizontal distance between the measuring point C and the hanging point A is determined>
(ii) a Wherein the content of the first and second substances,
is the center point of the tower I>
The distance between the base and the hanging point A on the horizontal projection plane is adjusted>
Is the center point of the tower I
Is at a distance from the measuring point C on the horizontal projection plane>
Is->
A projection angle on the horizontal projection plane;
wherein the calculation unit is based on a formula
Obtaining a distance
。
By the above, the horizontal distance between the measuring point C and the hanging point A can be better considered according to the dimensions of the cross arm and the pulley
Thereby making the calculation result more accurate.
Further, in step S3, the calculation unit is based on the formula
Acquire projection angle->
(ii) a Wherein it is present>
Is the central point of the tower II>
Is at a distance from the measuring point C on the horizontal projection plane>
Is the tower center point of tower one>
The central point of the tower position of the second tower>
Distance on the horizontal projection plane. />
Through the above, the horizontal distance of the corner of the tension tower can be preferably considered
Thereby making the calculation result more accurate.
In addition, when the X # conductor is a split conductor, the parameters input at the input unit in step S1 further include the number of phases of the split conductor, the phase n of the X # conductor, and the pitch between adjacent sub-conductors
(ii) a Wherein, the phase n of the X # conducting wire is counted according to the arrangement mode at the spacing rod, and the number of the phase n is n =1, wherein the lowest sub-conducting wire positioned at the leftmost side of the spacing rod is used as the sub-conducting wire;
in step S6 of this embodiment, the processing unit provides the sag compensation value through a sag compensation module
The processing unit is based on the formula f = ÷ is based on>
-（/>
+/>
) And acquiring sag deviation f.
It can be understood that, in actual overhead transmission line tight line work progress, the wire of tower one department can be fixed at the spacer of split conductor at first, later can through walking the two departments of pulling to the tower of board device flush, the online measuring equipment of this embodiment is carrying out the sag observation at the in-process of pulling, later through calculating the sag deviation f of every sub-wire, can adjust the sag of every wire at tight line in-process, after the adjustment is accomplished, can be fixed in the spacer of tower two departments with the wire.
Therefore, in the above process, when the X # conductor is a split conductor and is in different phases, there are deviations in the parameters of the measurement process and the actual installation position. That is, the measurement of the X # conductor is performed during the drawing process, and can be considered to be in the center position of the spacer, and the X # conductor needs to be installed at the installation position of the spacer after the measurement is completed; therefore, the above can preferably compensate for the deviation.
As seen in fig. 5, when the number of phases of the split conductor is four (i.e., a quad-split conductor), the sag compensation value is for n =1 and n =4
Is->
(ii) a For n =2 and n =3, the sag compensation value ≥>
Is->
. So that the sag compensation module can be better based on the distance between adjacent subconductors>
For the bestThe final sag deviation f is compensated.
Referring to fig. 6, when the number of phases of the split conductor is six (i.e., six split conductors), the sag compensation values are for n =1 and n =6
Is->
(ii) a For n =3 and n =4, the sag compensation value ≥>
Is->
(ii) a For n =2 and n =5, the sag compensation value ≥>
Is->
. So that the sag compensation module can be better based on the distance between adjacent subconductors>
The final sag deviation f is compensated.
As seen in fig. 7, when the number of phases of the split conductor is eight (i.e., eight split conductors), the sag compensation value is for n =1 and n =8
Is->
(ii) a For n =2 and n =7, the sag compensation value ≥>
Is->
(ii) a Sag compensation values for n =3 and n =6
Is->
(ii) a For n =4 and n =5, the sag compensation value ≥>
Is composed of
. So that the sag compensation module can be better based on the distance between adjacent subconductors>
The final sag deviation f is compensated.
As shown in fig. 8, in order to implement the sag observation method, the present embodiment further provides a sag observation device, which includes:
an input unit for enabling input of relevant data including step S1;
a calculation unit for implementing calculation of the relevant data including steps S1-S5; and
a processing unit for implementing the processing of the relevant data including step S6.
Through the above, the compensation of the sag measurement data in the strain section can be preferably realized, and particularly, the compensation of sag deviation caused by the rotation angle of the tower and the distance between the partition plates can be preferably realized.
In addition, in the sag observation device of the present embodiment, the calculation unit may further include a first calculation module, a second calculation module, a third calculation module, and an accumulation module, where the first calculation module, the second calculation module, and the third calculation module are configured to obtain segment values of the X # conducting wire at the first segment near the tower, the second segment near the tower, and the middle segment, respectively, and the accumulation module is configured to accumulate all segment calculation values to obtain an actual span length
. So that the actual gear shift can be better taken>
The parallel synchronous calculation can better improve the calculation speed and meet the actual construction condition.
In addition, the sag observation device of the present embodiment can further include a storage unit. The storage unit can be used for storing related data such as original input data and intermediate calculation data, so that the data input frequency and the calculation frequency can be reduced better, and the effects of improving the calculation efficiency and reducing the energy consumption of a system are achieved.
In addition, in the sag observation device of this embodiment, the processing unit can further include a sag compensation module, and the sag compensation module is configured to provide a sag compensation value
. The final sag deviation f can be preferably compensated for.
In addition, the embodiment also provides an arc sag observation system which is provided with the arc sag observation device.
Example 2
In the prior art, the maximum observation sag based on the current X # wire is scanned by a radar scanning device
Maximum observation sag for the remaining adjacent N # wires>
The principle of obtaining is essentially that the difference in height between the current X # wire and the corresponding N # wire is calculated by adding the difference in height to the maximum observed sag @forthe current X # wire>
In the middle, the maximum observation sag for the corresponding N # wire can be obtained better>
。
This calculation principle has an important premise that the horizontal pitch of the current X # conductor and the corresponding N # conductor is substantially the same as the pitch when they are in the final mounting position. However, in the actual overhead line stringing construction process, the lead at the first tower is dragged to the second tower through the plate walking device, and in the dragging process, the current X # lead and the corresponding N # lead both swing and vibrate. This would undoubtedly result in a very high uncertainty, i.e. a large error, of the final measured data. In addition, for a radar scanning device such as a split conductor, a plurality of sets of data are output in one scanning period, the plurality of sets of data include one data corresponding to each different adjacent N # conductor, and the difficulty in practical application also includes how to distinguish the credible data corresponding to the adjacent N # conductor.
In order to solve the above problems, in the sag observation method with adjacent wire spacing compensation provided in this embodiment, when there are X # wires and adjacent N # wires in the wire stages of the first tower and the second tower in sequence along the forward direction of the line, different N # wires are numbered in sequence by positive integers in the direction away from the X # wires; maximum observation sag based on X # conductor
Obtaining the maximum observation sag->
The method specifically comprises the following steps:
step SA, setting a measuring point C at the position of the X # conductor, and acquiring the maximum observation sag of the X # conductor
；
Step SB, arranging radar scanning equipment at the measuring point C, and acquiring the vertical distance h between the measuring point C and the X # lead and the inclination angle of the perpendicular line from the measuring point C to the X # lead in the left and right directions of the X # lead
And an inclination in the front-rear direction->
And the radar scanning distance between the measuring point C and all adjacent N # conductors->
And a corresponding radar scan angle>
；
Step SC, obtaining the observed horizontal distance between the X # conducting wire and all the adjacent N # conducting wires at a computing unit
，
；
Step SD, classifying the data collected in step SB at a classification unit, specifically,
wherein N is the total number of N # conducting wires;
step SE, judging the data processed in the step SD one by one at a judging unit, wherein the data which accord with a judging formula are credible data and output, and the data which do not accord with the judging formula are incredible data and are discarded; the decision formula is specifically as follows,
wherein the content of the first and second substances,
represents the theoretical horizontal distance between the X # wire and the N # wire, D is the wire diameter, and is greater than or equal to>
Is the theoretical horizontal distance between adjacent wires numbered n and n-1;
step SF, at a processing unit, according to the formula
Obtaining the maximum observation arc of an N # wire>
。
By the method, the classification of multiple groups of data of the radar scanning equipment in a single scanning period can be preferably realized, namely, the scanned data can be associated and corresponding to the corresponding wire when a plurality of adjacent wires are provided, so that the maximum observation sag of a plurality of adjacent N # wires can be preferably realized
Is output in synchronization.
It can be understood that, although the association and correspondence between all data and different adjacent wires can be preferably realized by the classification unit, in fact, the determination unit is added in consideration of the influence of wire swinging and vibration on the horizontal spacing, so that the classified data can be reliably determined, and the accuracy of data output can be preferably ensured.
It is understood that, in the embodiment, considering that the X # conductive line may be located at the most lateral side or the middle side, the related measurement data at the left side of the X # conductive line can be defined as a negative value, and the related data at the right side can be defined as a positive value, so that the versatility of the method can be improved.
Wherein the content of the first and second substances,
of points C and N # of wireDistance->
The scanning angle is the scanning angle of the connecting line of the radar detection point and the radar scanning point.
Wherein, for the strain section, the step SA can be obtained based on the method in embodiment 1.
Furthermore, step SF can also include the acquisition and compensation of the corresponding sag deviations as in the method of embodiment 1.
In addition, in the embodiment, the step SB-SE can be repeated for multiple times, and then multiple radar scanning distances corresponding to the corresponding N # conducting wires can be obtained
And scanning the distances with the plurality of radars>
Is used as the basis for the calculation of step SF. Thereby, the reliability of the data result can be further improved.
Furthermore, when the X # conductor is a split conductor, the distance between the adjacent sub-conductors at the spacer is compensated by a distance compensation unit
The distance between adjacent partial lines at the transfer device>
The horizontal distance between the measurement point C and the corresponding hook point>
And the actual gear distance>
For the theoretical horizontal distance->
Compensation is performed. So that a better realization of the theoretical horizontal distance->
And (4) correcting.
As in embodiment 1, it can be understood that, in the actual overhead transmission line stringing construction process, the split conductors are required to be corrected because one ends of the split conductors are fixedly distributed at the spacers in an array manner, and the other ends of the split conductors are horizontally arranged at the board walking device at intervals, and the distances between adjacent sub-conductors are different at any point of the split conductors.
Referring to fig. 9, when the X # conductor is a quad-bundled conductor, and the X # conductor is the leftmost conductor, the distance compensation unit compensates for the theoretical horizontal distance based on the following formula
The compensation is carried out and the compensation is carried out,
by the above, the compensation of the adjacent spacing of the four-split conductors can be preferably realized.
Wherein, for the strain section, the horizontal distance between the measuring point C and the hanging point A
In conjunction with the actual gear distance>
It can be obtained based on the method in embodiment 1.
Referring to fig. 10, when the X # conductor is a six-split conductor, and the X # conductor is the leftmost conductor, the distance compensation unit compensates for the theoretical horizontal distance based on the following formula
Is compensated and is taken out>
By the above, the compensation of the adjacent spacing of the six-split conductor can be preferably realized.
Referring to fig. 11, when the X # conductor is an eight-split conductor, and the X # conductor is the leftmost conductor, the distance compensation unit compensates for the theoretical horizontal distance based on the following formula
The compensation is carried out and the compensation is carried out,
by the above, the compensation of the adjacent spacing of the eight-split conductors can be preferably realized.
Referring to fig. 12, in order to implement the sag observation method, the present embodiment further provides a sag observation device, which includes:
radar scanning equipment for realizing the collection of relevant data including the step SB;
a calculation unit for implementing calculation of the relevant data including step SC;
a classification unit for implementing classification of the relevant data including step SD;
a determination unit for implementing a determination of the relevant data including step SE; and
and the processing unit is used for realizing the processing and output of the related data including the step SF.
Through the method, compensation and judgment of sag observation data can be preferably carried out on the adjacent sub-wires in the split wires, so that the accuracy of data can be preferably realized.
In addition, the embodiment also provides an arc sag observation system which is provided with the arc sag observation device.
Example 3
In consideration of errors of observation data caused by vibration and swing characteristics of a line in overhead line stringing construction, the embodiment provides a dynamic sag data fitting algorithm.
When carrying out the arc observation to locating the X # wire in the strain insulator section that is tower one and tower two in proper order along the circuit advancing direction, note that the X # wire is respectively for hanging a point A and hanging a point B at the hanging point of tower one and tower two department, set up measuring point C and carry out the arc observation time of hanging down at X # wire department, include following step:
step one, continuously moving a measuring point C along the extending direction of an X # conductor, and acquiring the horizontal distance between the measuring point C and a hanging point A of the measuring point C at different positions of the X # conductor through an acquisition unit
And observing sag>
(ii) a And a data set K is constructed,
，/>
and &>
Is the horizontal distance between the measurement point C collected at the kth time of the measurement point C and the hanging point A respectively>
And observing the sag->
；
Step two, fitting the curve form model G (X) of the X # conducting wire at a fitting unit based on the data group K, wherein G (X):
；
step three, acquiring the maximum value of the fitted curve form model G (x) at an output unit and taking the maximum value as the maximum observation sag
And output.
By the method, the curve form model G (X) can be acquired preferably by continuous observation at the X # lead and data fitting of a plurality of groups of observation points, and the maximum observation sag of the X # lead can be acquired preferably by solving the maximum value of the fitted curve form model G
。
In the second step of this embodiment, the fitting can be performed by the least square method. Therefore, the shape of the overhead conductor can be better attached, and the result is more accurate.
In this embodiment, the fitting function of the curve form model G (x) can be set to
. Therefore, the parabolic shape of the overhead conductor can be better met, and the result is more accurate.
Wherein the content of the first and second substances,
、/>
and &>
The coefficients to be found are required for the fitting unit.
In the first step of this embodiment, for the strain section, the relevant data is obtained based on the method in embodiment 1. Therefore, the compensation of the sag observation of the strain section can be better realized.
In the third step of this embodiment, the maximum sag of the N # conductive line adjacent to the X # conductive line is obtained. For the split conductor, the maximum sag of the N # conductor can be obtained based on the method in embodiment 2.
Referring to fig. 13, the present embodiment further provides a dynamic sag data fitting system for implementing the above-mentioned dynamic sag data fitting algorithm, which includes:
the acquisition unit is used for realizing the first step;
a fitting unit for implementing step two; and
and the output unit is used for realizing the third step.
Through the method, the maximum observation sag can be acquired better through fitting.
In addition, the embodiment also provides a dynamic sag data fitting device which is provided with the dynamic sag data fitting system.
In addition, the present embodiment also provides a storage medium, on which a computer program is stored, wherein the computer program is executed to implement the steps of the above-mentioned dynamic sag data fitting method.
Example 4
This embodiment also provides a sag observation method, which is based on the method described in embodiment 1 to realize the maximum observation sag at the X # conductor where the measurement point C is located
And acquiring the sag deviation f, and realizing the maximum observation sag->
And (4) obtaining.
In addition, the present embodiment also provides a sag observation system having both the relevant units or modules of embodiments 1 and 2.
Through the method and the system of the embodiment, the relevant parameters of the split conductor of the strain section can be preferably obtained.
Example 5
This embodiment also provides a sag observation method, which replaces the step S5 in embodiment 1 with the method in embodiment 3, and thus can be compared with the method in embodiment 3Optimally improving the maximum observed sag
The calculation accuracy of (2).
In addition, the present embodiment also provides a sag observation system having both the relevant units or modules of embodiments 1 and 3.
Example 6
The present embodiment also provides a sag observation method, which is based on the method in embodiment 5 and implements the maximum observation sag of the N # conductive wire adjacent to the X # conductive wire based on the method in embodiment 2
And (4) obtaining.
In addition, the present embodiment also provides a sag observation system having both the relevant units or modules of embodiments 1 and 2 and 3.
It is easily understood that a person skilled in the art can combine, split, recombine and the like the embodiments of the present application to obtain other embodiments on the basis of one or more embodiments provided by the present application, and the embodiments do not go beyond the protection scope of the present application.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, without departing from the spirit of the present invention, a person of ordinary skill in the art should understand that the present invention shall not be limited to the embodiments and the similar structural modes without creative design.
Claims (10)
1. When X # conductors and adjacent N # conductors are simultaneously arranged in line sections which are sequentially a tower I and a tower II along the advancing direction of a line, different N # conductors are sequentially numbered according to positive integers in the direction far away from the X # conductors; maximum observation sag based on X # conductor
Obtaining the maximum observation sag of N # conductor
The method specifically comprises the following steps:
step SA, setting a measuring point C at the position of the X # conductor, and acquiring the maximum observation sag of the X # conductor
；
Step SB, arranging radar scanning equipment at the measuring point C, and acquiring the vertical distance h between the measuring point C and the X # lead and the inclination angle of the perpendicular line from the measuring point C to the X # lead in the left and right directions of the X # lead
And the inclination angle in the front-rear direction
And the radar scanning distance between the measuring point C and all adjacent N # conductors
And corresponding radar scan angle
；
Step SC, obtaining the observed horizontal distance between the X # conducting wire and all the adjacent N # conducting wires at a calculation unit
，
；
Step SD, classifying the data collected in step SB at a classification unit, specifically,
wherein N is the total number of N # conducting wires;
step SE, judging the data processed in the step SD one by one at a judging unit, wherein the data which accord with a judging formula are credible data and output, and the data which do not accord with the judging formula are incredible data and are discarded; the decision formula is specifically as follows,
wherein the content of the first and second substances,
represents the theoretical horizontal distance between the X # conducting wire and the N # conducting wire, D is the diameter of the conducting wire,
is the theoretical horizontal distance between adjacent wires numbered n and n-1;
step SF, formulation at a processing unit
Obtaining the maximum observation sag of N # conductor
。
2. The sag observation method with adjacent wire spacing compensation according to claim 1, wherein: when the X # conductor is a split conductor, the distance between the adjacent sub-conductors at the spacer is compensated by a distance compensation unit
The spacing of adjacent sub-conductors at the track means
The horizontal distance between the measuring point C and the corresponding hanging point
And the actual gear span
For theoretical horizontal distance
Compensation is performed.
3. The sag observation method with adjacent wire spacing compensation according to claim 2, wherein: when the X # conductor is a quadrifilar conductor, and the X # conductor is the leftmost conductor, the distance compensation unit is used for the theoretical horizontal distance based on the following formula
The compensation is carried out and the compensation is carried out,
4. the sag observation method with adjacent wire spacing compensation according to claim 2, wherein: when the X # conductor is a six-split conductor, and the X # conductor is the leftmost conductor, the distance compensation unit is used for the theoretical horizontal distance based on the following formula
The compensation is carried out and the compensation is carried out,
5. the sag observation method with adjacent wire spacing compensation according to claim 2, wherein: when the X # conductor is an eight-split conductor, and the X # conductor is the leftmost conductor, the distance compensation unit is used for the theoretical horizontal distance based on the following formula
The compensation is carried out and the compensation is carried out,
6. the sag observation method with adjacent wire spacing compensation according to claim 1, wherein: for the strain section, the maximum observed sag in step SA
Compensation is performed.
7. The sag observation method with adjacent wire spacing compensation according to claim 1, wherein: in the step SF, the sag deviation is compensated.
8. The sag observation method with adjacent wire spacing compensation according to claim 1, wherein: repeating the SB-SE step for multiple times to obtain multiple radar scanning distances corresponding to the corresponding N # conductors
And scanning the distances with the plurality of radars
Is used as the basis for the calculation of step SF.
9. A sag observation device for realizing a sag observation method according to any one of claims 1 to 8, the sag observation device comprising:
radar scanning equipment for realizing the collection of relevant data including the step SB;
a calculation unit for implementing calculation of the relevant data including step SC;
a classification unit for implementing classification of the relevant data including step SD;
a determination unit for implementing a determination of the relevant data including step SE; and
and the processing unit is used for realizing the processing and output of the related data including the step SF.
10. A sag observation system having a sag observation device as set forth in claim 9.
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| CN112833762A (en) * | 2021-01-08 | 2021-05-25 | 安徽送变电工程有限公司 | Sag measurement algorithm, sag measurement system, sag measurement device and storage medium |
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