CN113868590B - Method and device for measuring and calculating running temperature of lead, storage medium and terminal equipment - Google Patents
Method and device for measuring and calculating running temperature of lead, storage medium and terminal equipment Download PDFInfo
- Publication number
- CN113868590B CN113868590B CN202110997515.3A CN202110997515A CN113868590B CN 113868590 B CN113868590 B CN 113868590B CN 202110997515 A CN202110997515 A CN 202110997515A CN 113868590 B CN113868590 B CN 113868590B
- Authority
- CN
- China
- Prior art keywords
- stress
- time sequence
- sequence data
- wire
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000012212 insulator Substances 0.000 claims abstract description 50
- 238000001914 filtration Methods 0.000 claims abstract description 28
- 230000003068 static effect Effects 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims description 24
- 238000004590 computer program Methods 0.000 claims description 23
- 238000012544 monitoring process Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
- G06F17/12—Simultaneous equations, e.g. systems of linear equations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Algebra (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Operations Research (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a method and a device for measuring and calculating the running temperature of a wire, a storage medium and terminal equipment. The method comprises the steps of receiving first stress time sequence data transmitted by a pre-installed stress sensor; the first stress time sequence data comprise insulator string hanging point stresses at different moments; performing high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data; calculating corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solving equation, the second stress time sequence data and pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static equilibrium condition, and the temperature time sequence data comprise wire running temperatures at different moments. The technical scheme of the invention can monitor the average wire temperature condition of the whole wire, and realize the effective monitoring of the running temperature of the wire.
Description
Technical Field
The present invention relates to the field of wire temperature monitoring technologies, and in particular, to a method and apparatus for measuring and calculating a wire operating temperature, a storage medium, and a terminal device.
Background
According to the operation specification of the power transmission line, the highest operation temperature of the wire needs to be controlled within a specified range, and the excessive high operation temperature of the wire can cause excessive sag and cause accident potential; and if the running temperature of the wire is too low, the current-carrying capacity of the wire is affected, and the channel utilization rate is low. Therefore, monitoring the operating temperature of the wire is of great importance to the wire Lu Yunwei. At present, a contact type temperature sensor is generally adopted for monitoring the temperature of the wires at home and abroad, namely, a reasonable fixing mode is adopted, sensing elements such as a platinum resistor, a thermistor and the like are fully contacted with the outer surfaces of the wires, and the acquisition of the running temperature of the wires is realized through the steps of sensing, signal processing, wireless transmission and the like. However, the following technical problems exist in the prior art: the existing wire temperature monitoring technology can only monitor the temperature change at a certain point of the wire (generally, the strain clamp) and cannot reflect the average wire temperature condition of the whole wire.
Disclosure of Invention
The embodiment of the invention provides a method and a device for measuring and calculating the running temperature of a wire, a storage medium and terminal equipment, which can monitor the average wire temperature condition of a whole wire and realize effective monitoring of the running temperature of the wire.
An embodiment of the present invention provides a method for measuring and calculating a wire operating temperature, including:
Receiving first stress time sequence data transmitted by a pre-installed stress sensor; the first stress time sequence data comprise insulator string hanging point stresses at different moments;
performing high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data;
Calculating corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solving equation, the second stress time sequence data and pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static equilibrium condition, and the temperature time sequence data comprise wire running temperatures at different moments.
As an improvement of the above solution, the performing high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data specifically includes:
Performing discrete Fourier transform on the first stress time sequence data within a preset time range to obtain first stress frequency domain data;
Filtering out component data with the frequency higher than a first threshold value in the first stress frequency domain data to obtain second stress frequency domain data;
and performing inverse discrete Fourier transform on the second stress frequency domain data to obtain second stress time sequence data.
As an improvement of the above solution, the calculating the corresponding temperature time series data according to the pre-established horizontal stress simultaneous equation set, the pre-established temperature solving equation, the second stress time series data and the pre-acquired insulator string hanging point stress under the set working condition specifically includes:
Solving the horizontal stress under the set working condition according to a pre-established horizontal stress simultaneous equation set and a pre-acquired insulator string hanging point stress under the set working condition;
solving horizontal stress time sequence data according to a pre-established horizontal stress simultaneous equation set and the second stress time sequence data; wherein the horizontal stress time sequence data comprises horizontal stresses at different moments;
and calculating the temperature time sequence data according to a pre-established temperature solving equation, the horizontal stress under the set working condition and the horizontal stress time sequence data.
As an improvement of the above solution, the solving the horizontal stress time series data according to the pre-established horizontal stress simultaneous equation set and the second stress time series data specifically includes:
And substituting the insulator string hanging point stresses at different moments in the second stress time sequence data into the horizontal stress simultaneous equation set in sequence, and solving to obtain the horizontal stress time sequence data.
As an improvement of the above scheme, the horizontal stress simultaneous equation system specifically includes:
-GJ(l-λ)＝0
wherein V is the vertical stress of the suspension point A, H is the horizontal tension of the suspension point A, G is the specific load of the wire, G J is the weight of the insulator string, l is the span between two towers, N is the wire split number, lambda is the length of the insulator string, sigma is the horizontal stress, H A is the height difference of the suspension point A, T is the suspension point stress of the insulator string, and A is the calculated sectional area of the wire.
As an improvement of the above scheme, the temperature solving equation is specifically:
Wherein, sigma 0 is the horizontal stress under the set working condition, sigma i is the horizontal stress at the i time, alpha is the thermal expansion coefficient of the wire, E is the elastic coefficient of the wire, g 0 is the vertical specific load of the wire under the set working condition, l is the span between two towers, h is the height difference, t 0 is the running temperature of the wire under the set working condition, and t i is the running temperature of the wire at the i time.
Another embodiment of the present invention correspondingly provides a device for measuring and calculating a wire operating temperature, including:
The data receiving module is used for receiving first stress time sequence data transmitted by a pre-installed stress sensor; the first stress time sequence data comprise insulator string hanging point stresses at different moments;
The high-frequency filtering module is used for carrying out high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data;
The temperature operation module is used for calculating corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solving equation, the second stress time sequence data and the pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static equilibrium condition, and the temperature time sequence data comprise wire running temperatures at different moments.
As an improvement of the above-mentioned scheme, the high-frequency filtering module specifically includes:
the discrete Fourier transform unit is used for performing discrete Fourier transform on the first stress time sequence data in a preset time range to obtain first stress frequency domain data;
the filtering unit is used for filtering out the component data with the frequency higher than a first threshold value in the first stress frequency domain data to obtain second stress frequency domain data;
and the inverse discrete Fourier transform unit is used for carrying out inverse discrete Fourier transform on the second stress frequency domain data to obtain second stress time sequence data.
Another embodiment of the present invention provides a computer readable storage medium, where the computer readable storage medium includes a stored computer program, and when the computer program runs, the device where the computer readable storage medium is controlled to execute the method for measuring and calculating the running temperature of the wire according to the embodiment of the present invention.
Another embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, where the processor implements the method for measuring and calculating the operating temperature of a wire according to the embodiment of the present invention when the processor executes the computer program.
Compared with the prior art, the method, the device, the storage medium and the terminal equipment for measuring and calculating the running temperature of the lead disclosed by the embodiment of the invention firstly receive first stress time sequence data transmitted by a pre-installed stress sensor; the first stress time sequence data comprise insulator string hanging point stresses at different moments; secondly, performing high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data; then, calculating corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solving equation, the second stress time sequence data and pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static equilibrium condition, and the temperature time sequence data comprise wire running temperatures at different moments. The invention can monitor the average wire temperature condition of the whole wire, and realize the effective monitoring of the running temperature of the wire.
Drawings
FIG. 1 is a flow chart of a method for measuring and calculating the operating temperature of a wire according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of suspension points on two sides of an independent strain section of an overhead transmission line according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a device for measuring and calculating the operating temperature of a wire according to an embodiment of the present invention;
Fig. 4 is a block diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a flow chart of a method for measuring and calculating a wire operating temperature according to an embodiment of the invention is shown.
The method for measuring and calculating the wire running temperature is suitable for measuring and calculating the wire running temperature of an isolated strain section, and comprises the following steps:
s11, receiving first stress time sequence data transmitted by a pre-installed stress sensor; the first stress time sequence data comprise insulator string hanging point stresses at different moments;
S12, performing high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data;
S13, calculating corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solving equation, the second stress time sequence data and pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static equilibrium condition, and the temperature time sequence data comprise wire running temperatures at different moments.
Preferably, the stress sensor is arranged at a hanging point of an insulator string of the side tower with the higher altitude of the isolated strain section.
It is worth to say that, because install the stress sensor in the lower side pole tower insulator string of isolated strain section elevation, the phenomenon that appears not converging when easily leading to solving the equation, so in order to further improve the accuracy of stress sensor monitoring data, adopt the mode of replacement gold utensil, install the stress sensor in the higher side pole tower insulator string hanging point of isolated strain section elevation to transmit monitoring data to the backstage main website through transmission modes such as IP network.
In an alternative embodiment, the step S12 is specifically:
Performing discrete Fourier transform on the first stress time sequence data within a preset time range to obtain first stress frequency domain data;
Filtering out component data with the frequency higher than a first threshold value in the first stress frequency domain data to obtain second stress frequency domain data;
and performing inverse discrete Fourier transform on the second stress frequency domain data to obtain second stress time sequence data.
Preferably, the first threshold is 10 hz.
The specific flow of step S12 will be described in the following by a specific embodiment, and the first stress time sequence data within the preset time range is obtained according to the following formulaPerforming discrete Fourier transform:
wherein k is a time sequence number, N is a section length of Fourier transform, and X is first stress frequency domain data;
Filtering out the component data with the frequency higher than 10 Hz in the first stress frequency domain data to obtain second stress frequency domain data
For the second stress frequency domain data according to the following formulaPerforming discrete Fourier transform to obtain second stress time sequence data x':
It can be appreciated that, under practical conditions, the first stress time sequence data transmitted to the background master station by the stress sensor contains a large amount of high-frequency components due to factors such as breeze vibration, so that in order to improve accuracy of monitoring data, high-frequency filtering is required to be performed on the first stress time sequence data.
In a specific embodiment, the step S13 specifically includes:
Solving the horizontal stress under the set working condition according to a pre-established horizontal stress simultaneous equation set and a pre-acquired insulator string hanging point stress under the set working condition;
solving horizontal stress time sequence data according to a pre-established horizontal stress simultaneous equation set and the second stress time sequence data; wherein the horizontal stress time sequence data comprises horizontal stresses at different moments;
and calculating the temperature time sequence data according to a pre-established temperature solving equation, the horizontal stress under the set working condition and the horizontal stress time sequence data.
Preferably, the set working condition is a working condition without ice coating and without wind speed.
In a specific embodiment, the solving the horizontal stress time series data according to the pre-established horizontal stress simultaneous equation set and the second stress time series data specifically includes:
And substituting the insulator string hanging point stresses at different moments in the second stress time sequence data into the horizontal stress simultaneous equation set in sequence, and solving to obtain the horizontal stress time sequence data.
In a preferred embodiment, the calculating the temperature time series data according to a pre-established temperature solving equation, the horizontal stress under the set working condition and the horizontal stress time series data specifically includes:
substituting the horizontal stress under the set working condition and the horizontal stress at different moments in the horizontal stress time sequence data into the horizontal stress simultaneous equation set in sequence, and solving to obtain the temperature time sequence data.
For a better understanding of the above scheme, referring to fig. 2, fig. 2 is a schematic diagram of suspension points on two sides of an isolated strain section of an overhead transmission line according to an embodiment of the present invention.
In some preferred embodiments, the set of horizontal stress simultaneous equations, specifically, are:
-GJ(l-λ)＝0
wherein V is the vertical stress of the suspension point A, H is the horizontal tension of the suspension point A, G is the specific load of the wire, G J is the weight of the insulator string, l is the span between two towers, N is the wire split number, lambda is the length of the insulator string, sigma is the horizontal stress, H A is the height difference of the suspension point A, T is the suspension point stress of the insulator string, and A is the calculated sectional area of the wire.
It should be noted that the horizontal stress simultaneous equation set is constructed under the condition that the influence of the weight of the insulator string at the suspension point B is ignored, the moment is taken at the suspension point B, the influence of wind load is not considered, the vertical stress V at the suspension point A is composed of the gravity of a wire and the weight G J of the insulator string, and the specific load G of the wire is determined according to specific working conditions.
Note that, the height difference h A of the suspension point a is a signed number, and the relation between the height difference of the suspension point B and the height difference of the suspension point a is: h A＝-hB, so that under the condition that the influence of the weight of an insulating string at the hanging point A is ignored, the moment is taken at the hanging point A, and the influence of wind load is not considered, only V in the horizontal stress simultaneous equation set is needed to be changed into the vertical stress of the hanging point B, H is changed into the horizontal tension born by the hanging point B, and the height difference H A of the hanging point A is changed into the height difference H B of the hanging point B.
In a specific embodiment, the temperature solving equation is specifically:
Wherein, sigma 0 is the horizontal stress under the set working condition, sigma i is the horizontal stress at the i time, alpha is the thermal expansion coefficient of the wire, E is the elastic coefficient of the wire, g 0 is the vertical specific load of the wire under the set working condition, l is the span between two towers, h is the height difference, t 0 is the running temperature of the wire under the set working condition, and t i is the running temperature of the wire at the i time.
Illustratively, the related wire parameters in the horizontal stress simultaneous equation set and the temperature solving equation can be obtained by querying the line design data; wherein the wire parameters include: height difference, insulator chain weight, insulator chain length, wire diameter, wire calculated sectional area, wire elastic coefficient, wire thermal expansion coefficient, wire specific load and span.
Referring to fig. 3, a schematic structural diagram of a device for measuring and calculating a wire operating temperature according to an embodiment of the present invention includes:
A data receiving module 21, configured to receive first stress time sequence data transmitted by a stress sensor installed in advance; the first stress time sequence data comprise insulator string hanging point stresses at different moments;
The high-frequency filtering module 22 is configured to perform high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data;
The temperature operation module 23 is configured to calculate corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solution equation, the second stress time sequence data, and a pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static equilibrium condition, and the temperature time sequence data comprise wire running temperatures at different moments.
As an alternative embodiment, the high-frequency filtering module 22 specifically includes:
the discrete Fourier transform unit is used for performing discrete Fourier transform on the first stress time sequence data in a preset time range to obtain first stress frequency domain data;
the filtering unit is used for filtering out the component data with the frequency higher than a first threshold value in the first stress frequency domain data to obtain second stress frequency domain data;
and the inverse discrete Fourier transform unit is used for carrying out inverse discrete Fourier transform on the second stress frequency domain data to obtain second stress time sequence data.
As an alternative embodiment, the temperature operation module 23 specifically includes:
a horizontal stress operation unit for:
Solving the horizontal stress under the set working condition according to a pre-established horizontal stress simultaneous equation set and a pre-acquired insulator string hanging point stress under the set working condition;
solving horizontal stress time sequence data according to a pre-established horizontal stress simultaneous equation set and the second stress time sequence data; wherein the horizontal stress time sequence data comprises horizontal stresses at different moments;
and the temperature solving unit is used for calculating the temperature time sequence data according to a pre-established temperature solving equation, the horizontal stress under the set working condition and the horizontal stress time sequence data.
Preferably, the horizontal stress operation unit is further specifically configured to:
And substituting the insulator string hanging point stresses at different moments in the second stress time sequence data into the horizontal stress simultaneous equation set in sequence, and solving to obtain the horizontal stress time sequence data.
Preferably, the horizontal stress simultaneous equation system specifically comprises:
-GJ(l-λ)＝0
wherein V is the vertical stress of the suspension point A, H is the horizontal tension of the suspension point A, G is the specific load of the wire, G J is the weight of the insulator string, l is the span between two towers, N is the wire split number, lambda is the length of the insulator string, sigma is the horizontal stress, H A is the height difference of the suspension point A, T is the suspension point stress of the insulator string, and A is the calculated sectional area of the wire.
Preferably, the temperature solving equation is specifically:
Wherein, sigma 0 is the horizontal stress under the set working condition, sigma i is the horizontal stress at the i time, alpha is the thermal expansion coefficient of the wire, E is the elastic coefficient of the wire, g 0 is the vertical specific load of the wire under the set working condition, l is the span between two towers, h is the height difference, t 0 is the running temperature of the wire under the set working condition, and t i is the running temperature of the wire at the i time.
It should be noted that, the relevant specific description and the beneficial effects of each embodiment of the device for measuring and calculating the wire operating temperature in this embodiment may refer to the relevant specific description and the beneficial effects of each embodiment of the method for measuring and calculating the wire operating temperature described above, and are not repeated herein.
Accordingly, embodiments of the present invention also provide a computer-readable storage medium including a stored computer program; wherein the computer program, when running, controls the device in which the computer readable storage medium is located to execute the method for measuring and calculating the running temperature of the wire according to any one of the embodiments.
An embodiment of the present invention further provides a terminal device, and referring to fig. 4, which is a block diagram of a structure of the terminal device according to an embodiment of the present invention, including a processor 10, a memory 20, and a computer program stored in the memory 20 and configured to be executed by the processor 10, where the processor 10 implements the method for measuring and calculating the operating temperature of a wire according to any one of the embodiments when executing the computer program.
Preferably, the computer program may be divided into one or more modules/units (e.g. computer program 1, computer program 2, … …) stored in the memory 20 and executed by the processor 10 to complete the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used for describing the execution of the computer program in the terminal device.
The Processor 10 may be a central processing unit (Central Processing Unit, CPU), other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic, discrete hardware components, etc., or the Processor 10 may be a microprocessor, or the Processor 10 may be any conventional Processor, the Processor 10 being a control center of the terminal device, connecting the various parts of the terminal device using various interfaces and lines.
The memory 20 mainly includes a program storage area, which may store an operating system, application programs required for at least one function, and the like, and a data storage area, which may store related data and the like. In addition, the memory 20 may be a high-speed random access memory, a nonvolatile memory such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD), etc., or the memory 20 may be other volatile solid-state memory devices.
It should be noted that the above-mentioned terminal device may include, but is not limited to, a processor, a memory, and those skilled in the art will understand that the structural block diagram of fig. 4 is merely an example of the terminal device, and does not constitute limitation of the terminal device, and may include more or less components than those illustrated, or may combine some components, or different components.
It should be noted that, the implementation of all or part of the flow in the method of the foregoing embodiment of the present invention may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and the computer program may be executed by a processor to implement the steps of the foregoing embodiment of the method for securely distributing bluetooth keys to vehicles. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
It should be noted that the above-described apparatus embodiments are merely illustrative, and the units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the embodiment of the device provided by the invention, the connection relation between the modules represents that the modules have communication connection, and can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
In summary, the method, the device, the storage medium and the terminal equipment for measuring and calculating the running temperature of the lead provided by the embodiment of the invention firstly receive the first stress time sequence data transmitted by the pre-installed stress sensor; the first stress time sequence data comprise insulator string hanging point stresses at different moments; secondly, performing high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data; then, calculating corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solving equation, the second stress time sequence data and pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static balance condition, and the temperature time sequence data comprise wire running temperatures at different moments, so that the average wire temperature condition of the whole-grade wire can be monitored, and the effective monitoring of the wire running temperature is realized.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (6)
1. A method for measuring and calculating the operating temperature of a wire, comprising:
Receiving first stress time sequence data transmitted by a pre-installed stress sensor; the first stress time sequence data comprise insulator string hanging point stresses at different moments;
performing high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data;
Calculating corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solving equation, the second stress time sequence data and pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static balance condition, and the temperature time sequence data comprise wire running temperatures at different moments;
The high-frequency filtering is performed on the first stress time sequence data to obtain second stress time sequence data, specifically:
Performing discrete Fourier transform on the first stress time sequence data within a preset time range to obtain first stress frequency domain data;
Filtering out component data with the frequency higher than a first threshold value in the first stress frequency domain data to obtain second stress frequency domain data;
performing inverse discrete Fourier transform on the second stress frequency domain data to obtain second stress time sequence data;
the horizontal stress simultaneous equation system specifically comprises the following components:
；
；
Wherein V is the vertical stress of the suspension point A, H is the horizontal tension of the suspension point A, g is the specific load of the lead, For the weight of the insulator string, l is the span between two towers, N is the wire splitting number, lambda is the length of the insulator string, sigma is the horizontal stress, h A is the height difference of hanging points A, T is the stress of the hanging points of the insulator string, and A is the calculated sectional area of the wire;
The temperature solving equation is specifically as follows:
；
Wherein, In order to set the horizontal stress under the working conditions,Is the horizontal stress at the i-th moment,E is the coefficient of thermal expansion of the wire, E is the coefficient of elasticity of the wire,In order to set the vertical specific load of the lead under the working condition, l is the span between two towers, h is the height difference,In order to set the operating temperature of the wire under operating conditions,The wire operating temperature at time i.
2. The method for measuring and calculating the running temperature of the wire according to claim 1, wherein the calculating the corresponding temperature time series data according to the pre-established horizontal stress simultaneous equation set, the pre-established temperature solving equation, the second stress time series data and the pre-acquired insulator string hanging point stress under the set working condition specifically comprises:
Solving the horizontal stress under the set working condition according to a pre-established horizontal stress simultaneous equation set and a pre-acquired insulator string hanging point stress under the set working condition;
solving horizontal stress time sequence data according to a pre-established horizontal stress simultaneous equation set and the second stress time sequence data; wherein the horizontal stress time sequence data comprises horizontal stresses at different moments;
and calculating the temperature time sequence data according to a pre-established temperature solving equation, the horizontal stress under the set working condition and the horizontal stress time sequence data.
3. The method for measuring and calculating the running temperature of the wire according to claim 2, wherein the solving the horizontal stress time series data according to the pre-established horizontal stress simultaneous equation set and the second stress time series data is specifically:
And substituting the insulator string hanging point stresses at different moments in the second stress time sequence data into the horizontal stress simultaneous equation set in sequence, and solving to obtain the horizontal stress time sequence data.
4. A device for measuring and calculating the operating temperature of a wire, comprising:
The data receiving module is used for receiving first stress time sequence data transmitted by a pre-installed stress sensor; the first stress time sequence data comprise insulator string hanging point stresses at different moments;
The high-frequency filtering module is used for carrying out high-frequency filtering on the first stress time sequence data to obtain second stress time sequence data;
The temperature operation module is used for calculating corresponding temperature time sequence data according to a pre-established horizontal stress simultaneous equation set, a pre-established temperature solving equation, the second stress time sequence data and the pre-acquired insulator string hanging point stress under a set working condition; the horizontal stress simultaneous equation set and the temperature solving equation are constructed based on a catenary equation and a static balance condition, and the temperature time sequence data comprise wire running temperatures at different moments;
The high-frequency filtering module specifically comprises:
the discrete Fourier transform unit is used for performing discrete Fourier transform on the first stress time sequence data in a preset time range to obtain first stress frequency domain data;
the filtering unit is used for filtering out the component data with the frequency higher than a first threshold value in the first stress frequency domain data to obtain second stress frequency domain data;
The inverse discrete Fourier transform unit is used for carrying out inverse discrete Fourier transform on the second stress frequency domain data to obtain second stress time sequence data;
the horizontal stress simultaneous equation system specifically comprises the following components:
；
；
Wherein V is the vertical stress of the suspension point A, H is the horizontal tension of the suspension point A, g is the specific load of the lead, For the weight of the insulator string, l is the span between two towers, N is the wire splitting number, lambda is the length of the insulator string, sigma is the horizontal stress, h A is the height difference of hanging points A, T is the stress of the hanging points of the insulator string, and A is the calculated sectional area of the wire;
The temperature solving equation is specifically as follows:
；
Wherein, In order to set the horizontal stress under the working conditions,Is the horizontal stress at the i-th moment,E is the coefficient of thermal expansion of the wire, E is the coefficient of elasticity of the wire,In order to set the vertical specific load of the lead under the working condition, l is the span between two towers, h is the height difference,In order to set the operating temperature of the wire under operating conditions,The wire operating temperature at time i.
5. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored computer program, wherein the computer program, when run, controls a device in which the computer readable storage medium is located to perform the method for measuring the operating temperature of a wire according to any one of claims 1 to 3.
6. A terminal device comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the method of measuring the operating temperature of a wire according to any one of claims 1 to 3 when the computer program is executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110997515.3A CN113868590B (en) | 2021-08-27 | 2021-08-27 | Method and device for measuring and calculating running temperature of lead, storage medium and terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110997515.3A CN113868590B (en) | 2021-08-27 | 2021-08-27 | Method and device for measuring and calculating running temperature of lead, storage medium and terminal equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113868590A CN113868590A (en) | 2021-12-31 |
| CN113868590B true CN113868590B (en) | 2024-07-02 |
Family
ID=78988670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110997515.3A Active CN113868590B (en) | 2021-08-27 | 2021-08-27 | Method and device for measuring and calculating running temperature of lead, storage medium and terminal equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113868590B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114842344A (en) * | 2022-05-20 | 2022-08-02 | 南方电网科学研究院有限责任公司 | Method, system and equipment for calculating horizontal stress of wire in ice-free state of power transmission line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236504A (en) * | 2014-08-28 | 2014-12-24 | 上海电力学院 | Power transmission line equivalent icing thickness monitoring method |
| CN107657090A (en) * | 2017-09-12 | 2018-02-02 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of method for judging strain tower of transmission line icing unstability |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103942417B (en) * | 2014-04-01 | 2017-01-04 | 清华大学深圳研究生院 | Ice coating wire ice-shedding emulation test method |
| CN109060214B (en) * | 2018-08-07 | 2020-09-04 | 杭州一益信息技术有限公司 | Wire stress monitoring method under unbalanced tension working condition |
| CN108692690B (en) * | 2018-08-07 | 2024-03-19 | 杭州一益信息技术有限公司 | Power transmission line equivalent icing thickness monitoring system and method |
| CN111767505B (en) * | 2020-05-19 | 2022-12-09 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for monitoring icing rate of tangent tower wire of power transmission line |
| CN111967147B (en) * | 2020-07-30 | 2024-04-16 | 华南理工大学 | Method for calculating key parameters of icing growth model of overhead transmission line |
| CN113112757B (en) * | 2021-03-15 | 2022-12-06 | 南方电网科学研究院有限责任公司 | Ground wire specific load change quantity measuring method, system, device and storage medium |
-
2021
- 2021-08-27 CN CN202110997515.3A patent/CN113868590B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236504A (en) * | 2014-08-28 | 2014-12-24 | 上海电力学院 | Power transmission line equivalent icing thickness monitoring method |
| CN107657090A (en) * | 2017-09-12 | 2018-02-02 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of method for judging strain tower of transmission line icing unstability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113868590A (en) | 2021-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5235861A (en) | Power transmission line monitoring system | |
| US5517864A (en) | Power transmission line tension monitoring system | |
| CN113868590B (en) | Method and device for measuring and calculating running temperature of lead, storage medium and terminal equipment | |
| US10352981B2 (en) | Power-cable ground current self-adaptive monitoring method | |
| CN109632122B (en) | Automatic temperature measurement system for rope strands of suspension bridge and temperature measurement and control platform of Internet of things comprising automatic temperature measurement and control system | |
| CN107920031A (en) | Access bandwidth self-adapting regulation method and device | |
| CN101762774B (en) | Method for identifying high voltage direct current transmission line fault location based on genetic algorithm parameter | |
| AU2017209972B2 (en) | System and method for dynamically determining maximum electric current carrying capacities | |
| WO2023103278A1 (en) | Online monitoring method for position information of conducting wire of power transmission line based on electromagnetic signal of ground wire | |
| CN102340139B (en) | System and method for dynamically measuring and calculating transmission capacity of transmission line | |
| CN105049167A (en) | Carrier aggregation CA download speed controlling method and base station | |
| CN105444814A (en) | Power transmission line on-line monitoring system | |
| CN103926484A (en) | Electric transmission line dynamic capacity increasing method based on circuit sag real-time measurement | |
| CN110307898B (en) | Method and device for calculating noise below high-voltage direct-current line by adopting molded lines | |
| CN117521905A (en) | Power generation equipment screening method and related device | |
| CN111007344A (en) | Large circuit load test method for carbon fiber composite core wire | |
| CN207726511U (en) | A kind of remaining line collection device of cable installation | |
| CN113686286A (en) | Method, device and system for monitoring icing of continuous shield lead of strain section of power transmission line | |
| CN114448503A (en) | Downlink data transmission method and device, storage medium and electronic device | |
| CN117791879B (en) | Management method and system for dynamic capacity-increasing monitoring terminal of power transmission line | |
| CN110703044A (en) | Power failure analysis and positioning management system based on NB-IoT | |
| CN117538661B (en) | Test device, method and processor for anti-icing wire-protection current characteristics of contact net | |
| CN117425135B (en) | Lightning arrester monitoring system based on secure wireless network and operation method | |
| CN221037512U (en) | Integrated liquid-cooling induction sensor | |
| CN102589992A (en) | Method for forecasting residual service life of steel-cored aluminum strand overhead conductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |