CN109471094A - A kind of power transmission line sag on-line monitoring method - Google Patents
A kind of power transmission line sag on-line monitoring method Download PDFInfo
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- CN109471094A CN109471094A CN201811302483.5A CN201811302483A CN109471094A CN 109471094 A CN109471094 A CN 109471094A CN 201811302483 A CN201811302483 A CN 201811302483A CN 109471094 A CN109471094 A CN 109471094A
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- radio wave
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- distance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Present applicant proposes a kind of power transmission line sag on-line monitoring methods, transmission line of electricity is suspended on shaft tower, monitoring method uses a kind of monitoring device, monitoring device includes the second radio wave R-T unit of the first radio wave R-T unit being fixed on shaft tower and fixed setting on the transmission line, and monitoring method includes the steps of determining that the distance between the hitch point of the distance between the hitch point of the first radio wave R-T unit and transmission line of electricity b and the second radio wave R-T unit and transmission line of electricity a；First radio wave R-T unit calculates the distance between the first radio wave R-T unit and the second radio wave R-T unit d；First radio wave R-T unit calculates the angle of depression α of the first radio wave R-T unit according to distance a, distance b and distance d, and according to the arc sag of angle of depression α computing electric power line.Compared with the existing technology, this monitoring method has the characteristics that measurement method is simple, fireballing.
Description
Technical field
The present invention relates to field, specifically a kind of power transmission line sag on-line monitoring method.
Background technique
Arc sag, any point is to vertical distance referred to as arc sag of the conducting wire in the point between hitch point line on guide line.
In field of power transmission, when transmission distance farther out when, since conducting wire is self-possessed, will form slight arc sag, making conducting wire is in the shape of catenary
Shape.Theoretically, infinitely great power is needed since a conducting wire is straightened, and such power is not present in practice, and can be
Electric pole brings burden, therefore usually in controlled range, needs that there are arc sags.Arc sag is test transmission line of electricity health status one
A important criteria, therefore how to be monitored in real time to the arc sag of transmission line of electricity is that those skilled in the art need to solve
One Important Problems.
Summary of the invention
In order to solve deficiency in the prior art, the present invention provides a kind of power transmission line sag on-line monitoring method, measurement
Method is simple, speed is fast.
To achieve the goals above, the present invention use the specific scheme is that
A kind of power transmission line sag on-line monitoring method, the transmission line of electricity are suspended on shaft tower, and the monitoring method is answered
For a kind of monitoring device, the monitoring device include the first radio wave R-T unit for being fixed on the shaft tower and
The second radio wave R-T unit being fixed on the transmission line of electricity, the monitoring method include the following steps:
Step S1, the distance between the hitch point of the first radio wave R-T unit and transmission line of electricity b is determined
The distance between the hitch point of the second radio wave R-T unit and transmission line of electricity a；
Step S2, the described first radio wave R-T unit emits three distances to the second radio wave R-T unit
Measure request signal；
Step S3, the described second radio wave R-T unit calculates each after receiving three ranging request signals
The transmission time of the ranging request signal；
Step S4, the described second radio wave R-T unit sends three and institute to the first radio wave R-T unit
State the one-to-one range measurement feedback signal of ranging request signal；
Step S5, the described first radio wave R-T unit calculates each after receiving three range measurement feedback signals
The transmission time of the ranging request signal；
Step S6, the described first radio wave R-T unit calculates the transmission time of three ranging request signals
With the average value of the transmission time of three range measurement feedback signals, and the first radio according to the mean value calculation
The distance between wave R-T unit and the second radio wave R-T unit d；
Step S7, the described first radio wave R-T unit is calculated according to the distance a, the distance b and the distance d
The angle of depression α of the first radio wave R-T unit, and calculate according to the angle of depression α arc sag of the transmission line of electricity.
Preferably, the first radio wave R-T unit is set as ultrahigh frequency RFID read-write equipment, and described second is wireless
Electric wave R-T unit is set as ultra-high frequency RFID label.
Preferably, the monitoring device further includes the processor being electrically connected with the first radio wave R-T unit and leads to
Believe return device, what the first radio wave R-T unit was calculated by narrowband Internet of Things for the communication return device
The arc sag is transferred to monitoring center.
Preferably, the ranging request signal is set as absolute time mark.
Preferably, the range measurement feedback signal is set as absolute time mark.
Preferably, the first radio wave R-T unit calculates the first radio wave R-T unit and described second
The method of the distance between radio wave R-T unit d is to be multiplied with the average value with the transmission rate of radio wave.
Preferably, the calculation method of the angle of depression α is
Preferably, the quantity of the ranging request signal and the quantity of the range measurement feedback signal are disposed as
Three.
The second radio is arranged by the way that the first radio wave R-T unit is arranged on shaft tower in the present invention on the transmission line
Wave R-T unit calculates the first radio in such a way that mutual transmission range measures request signal and range measurement feedback signal
The distance between wave R-T unit and the second radio wave R-T unit, and pass through the first radio wave R-T unit and power transmission line
The distance between hitch point of the distance between the hitch point on road and the second wireless transmitter and transmission line of electricity calculates
The angle of depression of the part of the close hitch point of transmission line of electricity, final approximation obtain the arc sag size of transmission line of electricity, and device is simple, measurement
Process speed is fast, can satisfy the demand of the on-line real time monitoring to power transmission line sag size.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is monitoring method schematic diagram of the invention.
Appended drawing reference: 1- shaft tower, 2- the first radio wave R-T unit, 3- the second radio wave R-T unit, 4- transmission of electricity
Route.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is monitoring method schematic diagram of the invention.
A kind of 4 arc sag on-line monitoring method of transmission line of electricity, transmission line of electricity 4 are suspended on shaft tower 1, and monitoring method uses one kind
Monitoring device, monitoring device include the first radio wave R-T unit 2 being fixed on shaft tower 1 and are fixed at transmission of electricity
The second radio wave R-T unit 3 on route 4, the first radio wave R-T unit 2 are set as ultrahigh frequency RFID read-write equipment,
Second radio wave R-T unit 3 is set as ultra-high frequency RFID label, the first radio wave R-T unit 2 and the second radio wave
R-T unit 3 carries out signal transmission using the radio wave of 2.4GHz, and effective distance can reach 200m, sufficiently meets to transmission of electricity
The requirement that the arc sag of route 4 is monitored.Monitoring device further includes the processor being electrically connected with the first radio wave R-T unit 2
With communication return device, communication return device passes through the arc that the first radio wave R-T unit 2 is calculated narrowband Internet of Things
It hangs down and is transferred to monitoring center.
Monitoring method includes the following steps:
Step S1, the distance between the first radio wave R-T unit 2 and the hitch point of transmission line of electricity 4 b and second are determined
The distance between the hitch point of radio wave R-T unit 3 and transmission line of electricity 4 a, distance b and distance a can be wireless in installation one
It is directly determined when electric wave R-T unit 2 and the second radio wave R-T unit 3, and as known conditions in subsequent process
The middle arc sag size for participating in computing electric power line 4；
Step S2, the first radio wave R-T unit 2 emits three range measurements to the second radio wave R-T unit 3 and asks
Signal is sought, ranging request signal is set as absolute time mark, i.e., absolute time when ranging request signal is sent uses
For absolute time as ranging request signal, signal element is small in size, takes up less resources, and consumption energy is low；
Step S3, the second radio wave R-T unit 3 calculates each distance survey after receiving three ranging request signals
The transmission time of request signal is measured, because ranging request signal is that use is absolutely part, the second radio wave is received
Transmitting apparatus 3 is not necessarily to accurately calculate ranging request letter with the first radio wave R-T unit 4 progress time synchronization
Number transmission time；
Step S4, the second radio wave R-T unit 3 sends three and range measurement to the first radio wave R-T unit 2
The one-to-one range measurement feedback signal of request signal, range measurement feedback signal are set as absolute time mark, i.e. range measurement
Absolute time when feedback signal is sent；
Step S5, the first radio wave R-T unit 2 calculates each distance survey after receiving three range measurement feedback signals
The transmission time for measuring request signal, because the second radio wave R-T unit 3 is from ranging request signal is received to sending
Certain delay is had between range measurement feedback signal, if it is same to have to the progress time using other contents for signal
Step can guarantee that the first radio wave R-T unit 2 can accurately obtain the transmission time of range measurement feedback signal, and
Using absolute time as Distance Transmission feedback signal, the first needs of radio wave R-T unit 2 are surveyed according to distance is received
The time that amount feedback signal receives subtracts the time of range measurement feedback signal itself, and speed is fast, and accuracy is high；
Step S6, the first radio wave R-T unit 2 calculate three ranging request signals transmission time with three
The average value of the transmission time of range measurement feedback signal, and according to the first radio wave of mean value calculation R-T unit 2 with
The distance between second radio wave R-T unit 3 d, the first radio wave R-T unit 2 calculate the first radio wave transmitting-receiving dress
The method for setting the distance between 2 and the second radio wave R-T unit 3 d is the transmission rate phase with average value and radio wave
Multiply, the hitch point of the first radio wave R-T unit 2, the second radio wave R-T unit 3 and transmission line of electricity 4 forms a triangle
Shape, distance a, distance b and distance d are the length on Atria side respectively, can calculate the first radio according to a, b and d
The angle of depression α of line between wave R-T unit 2 and hitch point, the arc sag that then approximate can obtain transmission line of electricity 4 using angle of depression α are big
It is small；
Step S7, the first radio wave R-T unit 2 calculates the first radio wave according to distance a, distance b and distance d and receives
The angle of depression α of transmitting apparatus 2, the calculation method of angle of depression α areThen the first radio wave R-T unit 2
According to the arc sag of angle of depression α computing electric power line 4, only need to use 3 parameters and several to the calculating of the arc sag size of transmission line of electricity 4
Secondary simple computation, arithmetic speed is fast, and energy consumption is low, is highly suitable for monitoring on-line for a long time.
For the transmission line of electricity 4 of different length, arc sag is generally different, and in different environments, identical transmission line of electricity 4
Arc sag also can difference, directly measuring to arc sag bottom can be relatively difficult.But 4 both ends of transmission line of electricity are close to suspension
The part of point is near straight line, if it is possible to measure to the angle of depression of this part, it will be able to which approximation obtains the arc of transmission line of electricity 4
Vertical size.Therefore, the present invention is arranged by the way that the first radio wave R-T unit 2 is arranged on shaft tower 1 on transmission line of electricity 4
Two radio wave R-T units 3 calculate in such a way that mutual transmission range measures request signal and range measurement feedback signal
The distance between first radio wave R-T unit 2 and the second radio wave R-T unit 3, and received and dispatched by the first radio wave
The hitch point of the distance between hitch point of device 2 and transmission line of electricity 4 and the second wireless transmitter 3 and transmission line of electricity 4 it
Between distance calculate the angle of depression of the part of the close hitch point of transmission line of electricity 4, final approximation obtains the arc sag of transmission line of electricity 4
Size, device is simple, and measurement process speed is fast, can satisfy the demand of the on-line real time monitoring to 4 arc sag size of transmission line of electricity.
It should also be noted that, herein, the terms "include", "comprise" or its any other variant are intended to non-
It is exclusive to include, so that the process, method, article or equipment for including a series of elements not only includes those elements,
It but also including other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including
There is also other identical elements in the process, method, article or equipment of the element.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (8)
1. a kind of power transmission line sag on-line monitoring method, the transmission line of electricity (4) is suspended on shaft tower (1), the monitoring side
Method is applied to a kind of monitoring device, and the monitoring device includes that the first radio wave being fixed on the shaft tower (1) is received
Transmitting apparatus (2) and the second radio wave R-T unit (3) being fixed on the transmission line of electricity (4), which is characterized in that institute
Monitoring method is stated to include the following steps:
Step S1, the distance between the hitch point of the first radio wave R-T unit (2) and the transmission line of electricity (4) is determined
The distance between the hitch point of b and the second radio wave R-T unit (3) and the transmission line of electricity (4) a；
Step S2, described first radio wave R-T unit (2) Xiang Suoshu the second radio wave R-T unit (3) emits several
Ranging request signal；
Step S3, the described second radio wave R-T unit (3) calculates often after receiving several described ranging request signals
The transmission time of a ranging request signal；
Step S4, described second radio wave R-T unit (3) Xiang Suoshu the first radio wave R-T unit (2) sends several
With the one-to-one range measurement feedback signal of the ranging request signal；
Step S5, the described first radio wave R-T unit (2) calculates often after receiving several described range measurement feedback signals
The transmission time of a ranging request signal；
Step S6, when the described first radio wave R-T unit (2) calculates the transmission of several ranging request signals
Between average value with the transmission time of range measurement feedback signal described in several, and the first nothing according to the mean value calculation
The distance between line electric wave R-T unit (2) and the second radio wave R-T unit (3) d；
Step S7, the described first radio wave R-T unit (2) calculates according to the distance a, the distance b and the distance d
The angle of depression α of the first radio wave R-T unit (2), and according to the arc sag of the angle of depression α calculating transmission line of electricity (4).
2. a kind of power transmission line sag on-line monitoring method as described in claim 1, it is characterised in that: first radio
Wave R-T unit (2) is ultrahigh frequency RFID read-write equipment, and the second radio wave R-T unit (3) is ultrahigh frequency RFID mark
Label.
3. a kind of power transmission line sag on-line monitoring method as claimed in claim 2, it is characterised in that: the monitoring device is also
Including the processor and communication return device being electrically connected with the first radio wave R-T unit (2), the communication passback dress
It sets and the arc sag that the first radio wave R-T unit (2) is calculated is transferred in monitoring by narrowband Internet of Things
The heart.
4. a kind of power transmission line sag on-line monitoring method as described in claim 1, it is characterised in that: the range measurement is asked
Signal is asked to be set as absolute time mark.
5. a kind of power transmission line sag on-line monitoring method as described in claim 1, it is characterised in that: the range measurement is anti-
Feedback signal is set as absolute time mark.
6. a kind of power transmission line sag on-line monitoring method as described in claim 1, it is characterised in that: first radio
Wave R-T unit (2) calculates between the first radio wave R-T unit (2) and the second radio wave R-T unit (3)
Distance d method be multiplied with the average value with the transmission rate of radio wave.
7. a kind of power transmission line sag on-line monitoring method as described in claim 1, it is characterised in that: the meter of the angle of depression α
Calculation method is
8. a kind of power transmission line sag on-line monitoring method as described in claim 1, it is characterised in that: the range measurement is asked
The quantity of the quantity and the range measurement feedback signal of seeking signal is disposed as three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302483.5A CN109471094A (en) | 2018-11-02 | 2018-11-02 | A kind of power transmission line sag on-line monitoring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302483.5A CN109471094A (en) | 2018-11-02 | 2018-11-02 | A kind of power transmission line sag on-line monitoring method |
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| CN109471094A true CN109471094A (en) | 2019-03-15 |
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| CN201811302483.5A Pending CN109471094A (en) | 2018-11-02 | 2018-11-02 | A kind of power transmission line sag on-line monitoring method |
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| CN204405009U (en) * | 2014-12-25 | 2015-06-17 | 国家电网公司 | A kind of power transmission line sag measurement mechanism |
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| CN105222749A (en) * | 2015-09-18 | 2016-01-06 | 郑州信工智能化系统有限公司 | A kind of power transmission line sag on-line monitoring method and device |
| CN106597148A (en) * | 2016-11-24 | 2017-04-26 | 云南电网有限责任公司电力科学研究院 | Residual voltage monitoring based state monitoring system and method for lightning arrester without serial gap |
| CN108365934A (en) * | 2017-01-26 | 2018-08-03 | 索尼公司 | Wireless communications method and wireless telecom equipment |
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2018
- 2018-11-02 CN CN201811302483.5A patent/CN109471094A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102968605A (en) * | 2011-08-08 | 2013-03-13 | 通用汽车环球科技运作有限责任公司 | System for monitoring items in proximity to a vehicle |
| CN204405009U (en) * | 2014-12-25 | 2015-06-17 | 国家电网公司 | A kind of power transmission line sag measurement mechanism |
| CN104819695A (en) * | 2015-04-15 | 2015-08-05 | 三峡大学 | Power transmission line sag measurement system based on infrasonic wave principle |
| CN105222749A (en) * | 2015-09-18 | 2016-01-06 | 郑州信工智能化系统有限公司 | A kind of power transmission line sag on-line monitoring method and device |
| CN106597148A (en) * | 2016-11-24 | 2017-04-26 | 云南电网有限责任公司电力科学研究院 | Residual voltage monitoring based state monitoring system and method for lightning arrester without serial gap |
| CN108365934A (en) * | 2017-01-26 | 2018-08-03 | 索尼公司 | Wireless communications method and wireless telecom equipment |
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Application publication date: 20190315 |