CN114719829A - Method for calculating cross-line length between hanging points, total station and storage medium - Google Patents
Method for calculating cross-line length between hanging points, total station and storage medium Download PDFInfo
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Abstract
The invention relates to a method for calculating the length of an over line between hanging points, a total station and a storage medium. The invention uses the total station to measure the height difference angle between hanging points needing wiring, and measures the horizontal span between the hanging points needing wiring; acquiring an arc sag corresponding to the current temperature, acquiring a correction coefficient corresponding to the horizontal span mapping, and acquiring the length of an insulator string adopted by a hanging point wiring; judging whether a height difference angle between hanging points needing to be connected is zero or not; if so, substituting the sag, the correction coefficient and the length of the insulator string into a first calculation function to obtain the length of the overline; and otherwise, substituting the sag, the correction coefficient, the length of the insulator string and the height difference angle into a second calculation function to obtain the length of the overline. The method can quickly calculate the span length between hanging points needing wiring, is convenient for preprocessing the transmission line according to the span length, and improves the efficiency of the overhead transmission line.
Description
Technical Field
The invention relates to the field of cable length prediction between hanging points, in particular to a method for calculating the length of an over-line between hanging points, a total station and a storage medium.
Background
When the power transmission line is erected in the air, the power transmission line needs to be fixed on a hanging point provided by an iron tower or a support through an insulator string.
The prism-free total station is not commonly applied in the power construction industry, is occasionally applied to power survey overhead transmission line engineering, such as sporadic application in the aspects of aerial cross spanning, safe distance of buildings near lines and the like, and is not popularized in a power system. However, due to the gravity of the power transmission line, the power transmission line is in an arc line between hanging points, and the line crossing length of the power transmission line between the hanging points is difficult to measure through the total station. Therefore, a method for calculating the overline length between the hanging points of the total station is needed, and the overline length of the transmission line between the hanging points is calculated rapidly.
Disclosure of Invention
In order to solve the above technical problem or at least partially solve the above technical problem, the present invention provides a method for calculating a length of a cross line between hanging points, a total station, and a storage medium.
In a first aspect, the present invention provides a method for calculating a length of an inter-wire between hanging points, including:
measuring a height difference angle between hanging points needing wiring by using a total station, and measuring a horizontal span between the hanging points needing wiring;
acquiring an arc sag corresponding to the current temperature, acquiring a correction coefficient corresponding to the horizontal span mapping, and acquiring the length of an insulator string adopted by a hanging point wiring;
judging whether a height difference angle between hanging points needing to be connected is zero or not;
if so, substituting the sag, the correction coefficient and the length of the insulator string into a first calculation function to obtain the length of the overline;
and otherwise, substituting the sag, the correction coefficient, the length of the insulator string and the height difference angle into a second calculation function to obtain the length of the overline.
Further, the obtaining the sag corresponding to the current temperature includes:
presetting a temperature sag mapping table, wherein the temperature sag mapping table records the mapping relation between the installation temperature and the corresponding sag;
collecting the current temperature of the environment when the wire is hung;
inquiring whether the current temperature has a corresponding installation temperature in the temperature sag mapping table,
if so, taking the sag mapped by the installation temperature corresponding to the current temperature as the sag corresponding to the current temperature,
otherwise, two installation temperatures adjacent to the current temperature and the sag mapped by the two installation temperatures are obtained, and the sag corresponding to the current temperature is calculated and obtained through an interpolation algorithm.
Further, the obtaining the correction factor corresponding to the horizontal span map comprises:
presetting a span correction coefficient mapping table, wherein the span correction coefficient mapping table records the mapping relation between the span and the correction coefficient;
inquiring whether the horizontal span of the hanging point needing to be connected has a corresponding span in the span correction coefficient mapping table,
if so, taking the correction coefficient mapped by the gear pitch corresponding to the horizontal gear pitch as the correction coefficient mapped by the corresponding horizontal gear pitch,
otherwise, acquiring two spans adjacent to the horizontal span and the correction coefficients mapped by the two spans, and calculating to obtain the correction coefficients mapped by the corresponding horizontal spans through an interpolation algorithm.
Still further, the first calculation function includes:
L＝l+8Kf2and L-2 lambda, wherein L is the span length, L is the horizontal span, K is the correction coefficient, f is the sag, and lambda is the insulator string length.
Still further, the second calculation function includes:
Furthermore, the correction coefficient ranges from 1.2 to 2.0.
Furthermore, an ID is configured for each hanging point needing wiring; and forming the IDs of the two hanging points needing to be connected at the two ends of the cross line into a keyword of the dictionary, and storing the length of the cross line between the two hanging points needing to be connected corresponding to the keyword.
In a second aspect, the present invention provides a total station for implementing calculation of span length between hanging points, including: the measuring module is used for measuring a height difference angle between hanging points needing wiring and a horizontal span between the hanging points needing wiring;
the parameter acquisition module acquires the sag corresponding to the current temperature, acquires the correction coefficient corresponding to the horizontal span mapping, and acquires the insulator string length of an insulator string adopted by the hanging point wiring;
and the calculation module selects the first calculation function or the second calculation function to calculate the over-line length according to whether the altitude difference angle is zero or not.
Furthermore, the total station for realizing the calculation of the span length between the hanging points further comprises: the first configuration module is used for configuring a temperature sag mapping table; the temperature acquisition module is used for measuring the current temperature of the wire hanging environment; a second configuration module, configured with a span correction coefficient mapping table; the parameter obtaining module obtains a correction coefficient corresponding to the horizontal span mapping according to the horizontal span and the span correction coefficient mapping table, and the parameter obtaining module obtains the sag corresponding to the current temperature according to the current temperature and the temperature sag mapping table.
In a third aspect, the present invention provides a storage medium for implementing a method for calculating an inter-hanging-point cross-line length, where the storage medium for implementing the method for calculating an inter-hanging-point cross-line length stores at least one instruction, and reads and executes the instruction to implement the method for calculating an inter-hanging-point cross-line length.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages:
the invention uses the total station to measure the height difference angle between hanging points needing wiring, and measures the horizontal span between the hanging points needing wiring; acquiring an arc sag corresponding to the current temperature, acquiring a correction coefficient corresponding to the horizontal span mapping, and acquiring the length of an insulator string adopted by a hanging point wiring; if the height difference angle between the hanging points needing wiring is zero, substituting the sag, the correction coefficient and the length of the insulator string into a first calculation function to obtain the length of the overline; and if the height difference angle between the hanging points needing wiring is nonzero, substituting the sag, the correction coefficient, the length of the insulator string and the height difference angle into a second calculation function to obtain the length of the overline. According to the method and the device, the height difference angle between the hanging points measured by the total station can be utilized to measure the span length between the hanging points needing to be wired and with the quick horizontal span, the span length between the hanging points with equal height can be measured, and the span length between the hanging points with unequal height can be calculated. And the transmission line can be effectively pretreated on the ground, and then the pretreated transmission line is directly hung on a hanging point needing wiring, so that the efficiency of the overhead transmission line is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a flowchart of a method for calculating a length of an inter-wire between hanging points according to an embodiment of the present invention;
FIG. 2 is a flow chart of sag according to the current temperature according to an embodiment of the present invention;
fig. 3 is a flowchart of obtaining a correction coefficient corresponding to a horizontal span map according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a total station for implementing calculation of a span length between hanging points according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Example 1
Referring to fig. 1, an embodiment of the present invention provides a method for calculating a length of an inter-wire between hanging points, including:
s100, measuring a height difference angle between hanging points needing wiring by using a total station, and measuring a horizontal span between the hanging points needing wiring; in the specific implementation process, the total station is used for measuring the height difference between hanging points needing to be connected, the total station is used for measuring the horizontal span between the hanging points needing to be connected, and the height difference angle between the hanging points needing to be connected is obtained through the height difference, the horizontal span and an arc tangent function.
S200, acquiring the sag corresponding to the current temperature, acquiring the correction coefficient corresponding to the horizontal span mapping, and acquiring the insulator string length of the insulator string adopted by the hanging point wiring.
In a specific implementation process, referring to fig. 2, the obtaining the sag corresponding to the current temperature includes:
s201, presetting a temperature sag mapping table, wherein the temperature sag mapping table records the mapping relation between the installation temperature and the corresponding sag.
S202, collecting the current temperature of the environment during wire hanging.
S203, inquiring whether the current temperature has a corresponding installation temperature in the temperature sag mapping table, if so, executing S204, otherwise, executing S205.
And S204, taking the sag of the installation temperature mapping corresponding to the current temperature as the sag corresponding to the current temperature.
S205, two installation temperatures adjacent to the current temperature and the sag mapped by the two installation temperatures are obtained, and the sag corresponding to the current temperature is calculated and obtained through an interpolation algorithm. Specifically, if the current temperature T is at the installation temperature T1And the mounting temperature T2In turn, the mounting temperature T1And the mounting temperature T2Adjacent to the current temperature T; if the installation temperature T1The sag mapped in the temperature sag mapping table is f1Mounting temperature T2The sag mapped in the temperature sag mapping table is f2Then, the formula of the interpolation algorithm for obtaining the sag corresponding to the current temperature is as follows:
in a specific implementation process, referring to fig. 3, the obtaining of the correction coefficient corresponding to the horizontal span map includes:
s210, presetting a span correction coefficient mapping table, wherein the span correction coefficient mapping table records the mapping relation between a span and a correction coefficient; and the value range of the correction coefficient is 1.2-2.0.
And S220, inquiring whether the horizontal span of the hanging point needing wiring has a corresponding span in the span correction coefficient mapping table, if so, executing S230, otherwise, executing S240.
And S230, taking the correction coefficient mapped by the gear span corresponding to the horizontal gear span as the correction coefficient mapped by the corresponding horizontal gear span.
S240, acquiring two spans adjacent to the horizontal span and correction coefficients mapped by the two spans, and calculating to obtain the correction coefficients mapped by the corresponding horizontal spans through an interpolation algorithm. In particular, if the horizontal span l is at span l1And a span l2Between, the span l1And a span l2Adjacent to the horizontal span l; if the gear pitch l1The correction coefficient mapped in the span correction coefficient mapping table is K1Step length l2The correction coefficient mapped in the span correction coefficient mapping table is K2Then find the correspondenceThe formula of the interpolation algorithm for the correction coefficient of the horizontal span l is as follows:
s300, judging whether a height difference angle between hanging points needing wiring is zero or not; if yes, executing S400, otherwise executing S500.
And S400, substituting the sag, the correction coefficient and the length of the insulator string into a first calculation function to obtain the length of the overline. In a specific implementation, one possible first calculation function is as follows:
L＝l+8Kf2and L-2 lambda, wherein L is the span length, L is the horizontal span, K is the correction coefficient, f is the sag, and lambda is the insulator string length.
And S500, substituting the sag, the correction coefficient, the length of the insulator string and the height difference angle into a second calculation function to obtain the length of the overline. In a specific implementation, one possible second calculation function is as follows:
In the specific implementation process, an ID is configured for each hanging point needing wiring; and forming the IDs of the two hanging points needing to be connected at the two ends of the cross line into a keyword of the dictionary, and storing the length of the cross line between the two hanging points needing to be connected corresponding to the keyword. And when inquiring the span length of the hanging point needing wiring, inquiring the stored span length through the ID of the hanging point needing wiring.
Example 2
The embodiment of the invention provides a total station for realizing the calculation of the length of a span line between hanging points, which comprises: the measuring module is used for measuring a height difference angle between hanging points needing wiring and a horizontal span between the hanging points needing wiring.
A first configuration module, the first configuration module configuring a temperature sag mapping table.
And the temperature acquisition module is used for measuring the current temperature of the wire hanging environment.
And the second configuration module is used for configuring a span correction coefficient mapping table.
The parameter obtaining module obtains the sag corresponding to the current temperature and obtains the correction coefficient corresponding to the horizontal span mapping, specifically, the parameter obtaining module obtains the sag corresponding to the current temperature according to a current temperature and temperature sag mapping table, and the parameter obtaining module obtains the correction coefficient corresponding to the horizontal span mapping according to a horizontal span and span correction coefficient mapping table. The method comprises the steps of obtaining the length of an insulator string adopted by a hanging point wiring, and inputting the length of a junction edge sub-string of the insulator string to a parameter obtaining module by a specific user.
A calculation module that selects either the first calculation function or the second calculation function to calculate the flying lead length based on whether the altitude difference angle is zero.
Example 3
The embodiment of the invention provides a storage medium for realizing a method for calculating the cross-line length between hanging points, wherein the storage medium for realizing the method for calculating the cross-line length between hanging points stores at least one instruction, reads and executes the instruction to realize the method for calculating the cross-line length between hanging points.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for calculating the over-line length between hanging points is characterized by comprising the following steps:
measuring a height difference angle between hanging points needing wiring by using a total station, and measuring a horizontal span between the hanging points needing wiring;
acquiring a sag corresponding to the current temperature, acquiring a correction coefficient corresponding to the horizontal span mapping, and acquiring the length of an insulator string adopted by the hanging point wiring;
judging whether a height difference angle between hanging points needing to be connected is zero or not;
if so, substituting the sag, the correction coefficient and the length of the insulator string into a first calculation function to obtain the length of the overline;
and otherwise, substituting the sag, the correction coefficient, the length of the insulator string and the height difference angle into a second calculation function to obtain the length of the overline.
2. The method for calculating the length of the span line between the hanging points according to claim 1, wherein the obtaining the sag corresponding to the current temperature comprises:
presetting a temperature sag mapping table, wherein the temperature sag mapping table records the mapping relation between the installation temperature and the corresponding sag;
collecting the current temperature of the environment when the wire is hung;
inquiring whether the current temperature has a corresponding installation temperature in the temperature sag mapping table,
if so, taking the sag mapped by the installation temperature corresponding to the current temperature as the sag corresponding to the current temperature,
otherwise, two installation temperatures adjacent to the current temperature and the sag mapped by the two installation temperatures are obtained, and the sag corresponding to the current temperature is calculated and obtained through an interpolation algorithm.
3. The method for calculating the over-the-wire length between hanging points according to claim 1, wherein the obtaining of the correction coefficient corresponding to the horizontal span mapping comprises:
presetting a span correction coefficient mapping table, wherein the span correction coefficient mapping table records the mapping relation between the span and the correction coefficient;
inquiring whether the horizontal span of the hanging point needing to be connected has a corresponding span in the span correction coefficient mapping table,
if so, taking the correction coefficient mapped by the gear pitch corresponding to the horizontal gear pitch as the correction coefficient mapped by the corresponding horizontal gear pitch,
otherwise, acquiring two spans adjacent to the horizontal span and the correction coefficients mapped by the two spans, and calculating to obtain the correction coefficients mapped by the corresponding horizontal spans through an interpolation algorithm.
4. The method of claim 1, wherein the first calculation function comprises:
L＝l+8Kf2and L-2 lambda, wherein L is the span length, L is the horizontal span, K is the correction coefficient, f is the sag, and lambda is the insulator string length.
5. The method for calculating the over-the-wire length between hanging points according to claim 1, wherein the second calculation function comprises:
6. The method for calculating the length of the cross line between the hanging points according to claim 4 or 5, wherein the correction coefficient is in a range of 1.2-2.0.
7. The method for calculating the length of the cross wire between hanging points according to claim 1, wherein an ID is configured for each hanging point to be connected; and forming the IDs of the two hanging points needing to be connected at the two ends of the cross line into a keyword of the dictionary, and storing the length of the cross line between the two hanging points needing to be connected corresponding to the keyword.
8. A total station for realizing calculation of span length between hanging points is characterized by comprising: the measuring module is used for measuring a height difference angle between hanging points needing wiring and a horizontal span between the hanging points needing wiring;
the parameter acquisition module acquires sag corresponding to the current temperature, acquires a correction coefficient corresponding to the horizontal span mapping, and acquires the insulator string length of an insulator string adopted by the hanging point wiring;
a calculation module that selects either the first calculation function or the second calculation function to calculate the flying lead length based on whether the altitude difference angle is zero.
9. The total station of claim 8, in which said calculation of a span length between hanging points is accomplished, further comprising: the first configuration module is used for configuring a temperature sag mapping table; the temperature acquisition module is used for measuring the current temperature of the wire hanging environment; a second configuration module, configured with a span correction coefficient mapping table; the parameter obtaining module obtains the sag corresponding to the current temperature according to the current temperature and a temperature sag mapping table, and the parameter obtaining module obtains the correction coefficient corresponding to the horizontal span mapping according to the horizontal span and the span correction coefficient mapping table.
10. A storage medium for implementing a method for calculating an inter-hanging-point cross-line length, wherein the storage medium for implementing the method for calculating the inter-hanging-point cross-line length stores at least one instruction, and reads and executes the instruction to implement the method for calculating the inter-hanging-point cross-line length according to any one of claims 1 to 7.
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| CN103236658A (en) * | 2012-05-18 | 2013-08-07 | 河南送变电工程公司 | Disconnection method and device for obtaining exact off-line length of conductor of overhead transmission line |
| CN103676667A (en) * | 2013-12-04 | 2014-03-26 | 国家电网公司 | Three-dimensional simulation, measurement and control system for transformer substation project flexible conductor assembling |
| CN106570239A (en) * | 2016-10-25 | 2017-04-19 | 中国电力科学研究院 | Calculation method and device of flexible busbar blanking length |
| CN111222236A (en) * | 2019-12-31 | 2020-06-02 | 国网山东省电力公司临沂供电公司 | Substation flexible conductor blanking length calculation method and analyzer |
| CN114034251A (en) * | 2021-10-15 | 2022-02-11 | 西安理工大学 | Method for monitoring power transmission line track line and sag |
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2022
- 2022-03-09 CN CN202210232928.7A patent/CN114719829A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236658A (en) * | 2012-05-18 | 2013-08-07 | 河南送变电工程公司 | Disconnection method and device for obtaining exact off-line length of conductor of overhead transmission line |
| CN103676667A (en) * | 2013-12-04 | 2014-03-26 | 国家电网公司 | Three-dimensional simulation, measurement and control system for transformer substation project flexible conductor assembling |
| CN106570239A (en) * | 2016-10-25 | 2017-04-19 | 中国电力科学研究院 | Calculation method and device of flexible busbar blanking length |
| CN111222236A (en) * | 2019-12-31 | 2020-06-02 | 国网山东省电力公司临沂供电公司 | Substation flexible conductor blanking length calculation method and analyzer |
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