CN105180867B - Conducting wire sag measuring system and method based on inclination angle calculus of finite differences - Google Patents
Conducting wire sag measuring system and method based on inclination angle calculus of finite differences Download PDFInfo
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- CN105180867B CN105180867B CN201510311356.1A CN201510311356A CN105180867B CN 105180867 B CN105180867 B CN 105180867B CN 201510311356 A CN201510311356 A CN 201510311356A CN 105180867 B CN105180867 B CN 105180867B
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Abstract
The invention discloses a kind of conducting wire sag measuring system and method based on inclination angle calculus of finite differences, its system includes measuring device A1, measuring device A2 and host module；The measuring device A1 includes single-shaft inclination angle sensor one, MCU processors one, data storage one and wireless transceiver one；The measuring device A2 includes single-shaft inclination angle sensor two, MCU processors two, data storage two and wireless transceiver two；The host module includes wireless transceiver three and host.The present invention provides a kind of conducting wire sag measuring system and method based on inclination angle calculus of finite differences, the data measured by two equipment are mutually compensated for that, to make up due to Nonlinear Error of Transducer caused by temperature, more accurate sag value can be obtained.
Description
Technical field
The present invention relates to a kind of conducting wire sag measuring system and method based on inclination angle calculus of finite differences.
Background technology
Overhead transmission line arc sag is the important indicator of Transmission Line Design and operation, the magnitude relationship of its value is to entirely defeated
The safety of electric line operation, the transmission capacity of transmission line of electricity and the change of surrounding environment all may result in power transmission line sag
Change, arc sag is excessive, too small all may result in serious security risk.
In addition, in recent years since the needs that power load increases, many existing transmission lines of electricity are defeated in order to improve electric power
Ability is sent, conducting wire highest, which is run, allows temperature to be transferred to 80 degrees Celsius from 70 degrees Celsius, the existing measurement side to sag value
Method generally uses single-sensor, and single-sensor measurement accuracy is easily influenced by mounting process and operating temperature, sensor pair
Temperature is nonlinear error, and single-sensor can not compensate well.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of conducting wire sag survey based on inclination angle calculus of finite differences
System and method for is measured, the data measured by two equipment are mutually compensated for make up since sensor is non-thread caused by temperature
Property error, can obtain more accurate sag value.
The purpose of the present invention is what is be achieved through the following technical solutions：Conducting wire sag measurement system based on inclination angle calculus of finite differences
System, including measuring device A1, measuring device A2 and host module；The measuring device A1 include single-shaft inclination angle sensor one,
MCU processors one, data storage one and wireless transceiver one；The measuring device A2 include single-shaft inclination angle sensor two,
MCU processors two, data storage two and wireless transceiver two；The host module includes wireless transceiver three and host；
MCU processors one are connected with single-shaft inclination angle sensor one, data storage one and wireless transceiver one respectively；MCU processors two
It is connected respectively with single-shaft inclination angle sensor two, data storage two and wireless transceiver two；Wireless transceiver one and wireless receiving and dispatching
Device two is connected by wireless telecommunications with wireless transceiver three respectively；Wireless transceiver three is connected with host.
The MCU processors one and MCU processors two include dip mean computing unit；MCU processors one
Dip mean computing unit is used to calculate the dip mean θ 1 that single-shaft inclination angle sensor one collects；MCU processors two
Dip mean computing unit is used to calculate the dip mean θ 2 that single-shaft inclination angle sensor two collects.
The host includes theoretical inclination value computing unit, correction value computing unit and sag value computing unit；It is described
Theoretical inclination value computing unit be used to calculate the theoretical inclination value θ 2c of measuring device A2；The correction value computing unit
For 1 correction values of θ being calculated；The sag value computing unit is used for the sag value for calculating measuring device A1.
The measuring device A1 and measuring device A2 is multilayer screen, anti-interference, anti-lightning measuring device.
Conducting wire sag measuring method based on inclination angle calculus of finite differences, comprises the following steps：
S1. be L installed in horizontal distance by transmission line of electricity, difference in height is on two shaft towers of A, B of H, to construction arc sag into
Row correction, discharges the error caused by transmission line of electricity mounting means；
S2. measuring device A1 is installed at wire clamp, measuring device A2 is installed at a certain distance from offline folder, host installation
On the steel tower near wire clamp；
S3. host sends data acquisition command every certain time interval by wireless transmit/receive units three, receives and adopts
After collection order, measuring device A1 measurements obtain dip mean θ 1, and measuring device A2 measurements obtain dip mean θ 2；
S4. the data storage one of measuring device A1 stores dip mean θ 1, the data storage two of measuring device A2
Store dip mean θ 2；
S5. dip mean θ 1 is sent to wireless transceiver three by wireless transceiver one；Wireless transceiver two puts down inclination angle
Average θ 2 is sent to wireless transceiver three；Dip mean θ 1 and dip mean θ 2 are sent to host by wireless transceiver three；
S6. according to the horizontal distance L of two tower bar of A, B, the ratio load value γ under height difference H and current environment, passes through host
Catenary equation calculates theory inclination value θ 2c；
S7. Framework computing goes out the correction value of measuring device A1 dip means θ 1；
S5. the correction value of θ 1 is converted into sag value by host.
The step S3 includes following sub-step：
S31. data acquisition command is sent to measurement dress by host every certain time interval by wireless transceiver three
Put A1 and measuring device A2；
S32. after the wireless transceiver one in measuring device A1 receives data acquisition command, MCU processors one control list
Axial rake sensor one gathers 10 groups of inclination values；After wireless transceiver two in measuring device A2 receives data acquisition command,
MCU processors two control single-shaft inclination angle sensor two to gather 10 groups of inclination values；
10 groups of inclination values that S33.MCU processors one are collected according to single-shaft inclination angle sensor one calculate measuring device A1
Dip mean θ 1,10 groups of inclination values that MCU processors two are collected according to single-shaft inclination angle sensor two calculate measurement dress
Put the dip mean θ 2 of A2.
The step S7 includes following sub-step：
S71. Framework computing θ 2 and θ 2c difference DELTAs；
S72. the correction value of θ 1 is calculated using Δ as nonlinear compensation mode input in host.
Certain distance described in step S2 is 1m.
The beneficial effects of the invention are as follows：（1）The present invention is synchronously adopted by the way of based on difference with two different equipment
Collection inclination data can obtain more accurate sag value mutually compensating；（2）The present invention deposits dip mean data
Store up in data storage cell, when wireless telecommunications occur abnormal, data can be preserved；（3）The present invention is first by delivery receiving acceptance
Obtained design arc sag is corrected, and has discharged the error caused by transmission line of electricity mounting means, so as to get data more
Accurately；（4）The measuring device A1 and measuring device A2 is multilayer screen, anti-interference, anti-lightning measuring device, it is ensured that
The stability of system operation.
Brief description of the drawings
Fig. 1 is the system principle diagram of the present invention；
Fig. 2 is the flow chart of the present invention；
Fig. 3 is measuring device A1, A2 schematic view of the mounting position.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1, the conducting wire sag measuring system based on inclination angle calculus of finite differences, including measuring device A1, measuring device A2
And host module；The measuring device A1 includes single-shaft inclination angle sensor one, MCU processors one, data storage one and nothing
Line transceiver one；The measuring device A2 includes single-shaft inclination angle sensor two, MCU processors two, data storage two and nothing
Line transceiver two；The host module includes wireless transceiver three and host；MCU processors one are sensed with single shaft inclination angle respectively
Device one, data storage one and wireless transceiver one connect；MCU processors two are deposited with single-shaft inclination angle sensor two, data respectively
Reservoir two and wireless transceiver two connect；Wireless transceiver one and wireless transceiver two pass through wireless telecommunications and wireless receiving and dispatching respectively
Device three connects；Wireless transceiver three is connected with host.
The MCU processors one and MCU processors two include dip mean computing unit；MCU processors one
Dip mean computing unit is used to calculate the dip mean θ 1 that single-shaft inclination angle sensor one collects；MCU processors two
Dip mean computing unit is used to calculate the dip mean θ 2 that single-shaft inclination angle sensor two collects.
The host includes theoretical inclination value computing unit, correction value computing unit and sag value computing unit；It is described
Theoretical inclination value computing unit be used to calculate the theoretical inclination value θ 2c of measuring device A2；The correction value computing unit
For 1 correction values of θ being calculated；The sag value computing unit is used for the sag value for calculating measuring device A1.
The measuring device A1 and measuring device A2 is multilayer screen, anti-interference, anti-lightning measuring device.
As shown in Fig. 2, the conducting wire sag measuring method based on inclination angle calculus of finite differences, comprises the following steps：
S1. be L installed in horizontal distance by transmission line of electricity, difference in height is on two shaft towers of A, B of H, to construction arc sag into
Row correction, discharges the error caused by transmission line of electricity mounting means；
S2. measuring device A1 is installed at wire clamp, measuring device A2 is installed at a certain distance from offline folder, host installation
On the steel tower near wire clamp；
S3. host sends data acquisition command every certain time interval by wireless transmit/receive units three, receives and adopts
After collection order, measuring device A1 measurements obtain dip mean θ 1, and measuring device A2 measurements obtain dip mean θ 2；
S4. the data storage one of measuring device A1 stores dip mean θ 1, the data storage two of measuring device A2
Store dip mean θ 2；
S5. dip mean θ 1 is sent to wireless transceiver three by wireless transceiver one；Wireless transceiver two puts down inclination angle
Average θ 2 is sent to wireless transceiver three；Dip mean θ 1 and dip mean θ 2 are sent to host by wireless transceiver three；
S6. according to the horizontal distance L of two tower bar of A, B, the ratio load value γ under height difference H and current environment, passes through host
Catenary equation calculates theory inclination value θ 2c；
S7. Framework computing goes out the correction value of measuring device A1 dip means θ 1；
S5. the correction value of θ 1 is converted into sag value by host.
The step S3 includes following sub-step：
S31. data acquisition command is sent to measurement dress by host every certain time interval by wireless transceiver three
Put A1 and measuring device A2；
S32. after the wireless transceiver one in measuring device A1 receives data acquisition command, MCU processors one control list
Axial rake sensor one gathers 10 groups of inclination values；After wireless transceiver two in measuring device A2 receives data acquisition command,
MCU processors two control single-shaft inclination angle sensor two to gather 10 groups of inclination values；
10 groups of inclination values that S33.MCU processors one are collected according to single-shaft inclination angle sensor one calculate measuring device A1
Dip mean θ 1,10 groups of inclination values that MCU processors two are collected according to single-shaft inclination angle sensor two calculate measurement dress
Put the dip mean θ 2 of A2.
The step S7 includes following sub-step：
S71. Framework computing θ 2 and θ 2c difference DELTAs；
S72. the correction value of θ 1 is calculated using Δ as nonlinear compensation mode input in host.
Certain distance described in step S2 is 1m.
As shown in figure 3, being measuring device A1, A2 schematic view of the mounting position in the present invention, as can be seen from the figure measurement fills
Put the specific installation situation of A1, A2.
It should be noted that refer to one in step S6 than load value γ, ratio load value γ here, is by transmission line of electricity sheet
What body and transmission line of electricity surrounding environment determined, be one than load value γ in the same already installed transmission line of electricity in place
Definite given value.
Host be refer in the sub-step S72 of step S7 using Δ as nonlinear compensation mode input, θ 1 is calculated
Correction value, it is how to obtain the correction value of θ 1 to illustrate here, and step S71 has calculated θ 2 and θ 2c difference DELTAs, if
Difference DELTA=θ 2c- θ 2, the correction value for the θ 1 that we require, which only needs θ 1 being added with Δ, can obtain.
Claims (5)
1. the conducting wire sag measuring method based on inclination angle calculus of finite differences, it is characterised in that：It comprises the following steps：
S1. it is L installed in horizontal distance by transmission line of electricity, difference in height is on two shaft towers of A, B of H, and school is carried out to construction arc sag
Just, the error caused by transmission line of electricity mounting means is discharged；
S2. measuring device A1 is installed at wire clamp, measuring device A2 is installed at a certain distance from offline folder, and host installation is online
On steel tower near folder；
S3. host sends data acquisition command every certain time interval by wireless transmit/receive units three, receives collection life
After order, measuring device A1 measurements obtain dip mean θ 1, and measuring device A2 measurements obtain dip mean θ 2；
S4. the data storage one of measuring device A1 stores dip mean θ 1, and the data storage two of measuring device A2 stores
Dip mean θ 2；
S5. dip mean θ 1 is sent to wireless transceiver three by wireless transceiver one；Wireless transceiver two is by dip mean θ
2 are sent to wireless transceiver three；Dip mean θ 1 and dip mean θ 2 are sent to host by wireless transceiver three；
S6. for host according to the horizontal distance L of two tower bar of A, B, the ratio load value γ under height difference H and current environment, passes through stretched wire
Line equation calculation theory inclination value θ 2c；
S7. Framework computing goes out the correction value of measuring device A1 dip means θ 1；
S8. the correction value of θ 1 is converted into sag value by host；
S7 includes following sub-step：
S71. Framework computing θ 2 and θ 2c difference DELTAs；
S72. the correction value of θ 1 is calculated using Δ as nonlinear compensation mode input in host.
2. the conducting wire sag measuring method according to claim 1 based on inclination angle calculus of finite differences, it is characterised in that：The step
Rapid S3 includes following sub-step：
S31. data acquisition command is sent to measuring device A1 by host every certain time interval by wireless transceiver three
With measuring device A2；
S32. after the wireless transceiver one in measuring device A1 receives data acquisition command, MCU processors one control single shaft to incline
Angle transducer one gathers 10 groups of inclination values；After wireless transceiver two in measuring device A2 receives data acquisition command, at MCU
Managing device two controls single-shaft inclination angle sensor two to gather 10 groups of inclination values；
10 groups of inclination values that S33.MCU processors one are collected according to single-shaft inclination angle sensor one calculate inclining for measuring device A1
Angle average value θ 1,10 groups of inclination values that MCU processors two are collected according to single-shaft inclination angle sensor two calculate measuring device A2
Dip mean θ 2.
3. the conducting wire sag measuring method according to claim 2 based on inclination angle calculus of finite differences, it is characterised in that：In step S2
The certain distance is 1m.
4. the conducting wire sag measuring system based on inclination angle calculus of finite differences, it is characterised in that：Including measuring device A1, measuring device A2 and
Host module；The measuring device A1 includes single-shaft inclination angle sensor one, MCU processors one, data storage one and wireless
Transceiver one；The measuring device A2 includes single-shaft inclination angle sensor two, MCU processors two, data storage two and wireless
Transceiver two；The host module includes wireless transceiver three and host；MCU processors one respectively with single-shaft inclination angle sensor
First, data storage one and wireless transceiver one connect；MCU processors two are stored with single-shaft inclination angle sensor two, data respectively
Device two and wireless transceiver two connect；Wireless transceiver one and wireless transceiver two pass through wireless telecommunications and wireless transceiver respectively
Three connections；Wireless transceiver three is connected with host；The MCU processors one and MCU processors two include dip mean
Computing unit；The dip mean computing unit of MCU processors one is used to calculate the inclination angle that single-shaft inclination angle sensor one collects
Average value θ 1；The dip mean computing unit of MCU processors two is used to calculate the inclination angle that single-shaft inclination angle sensor two collects
Average value θ 2；The host includes theoretical inclination value computing unit, correction value computing unit and sag value computing unit；It is described
Theoretical inclination value computing unit be used to calculate the theoretical inclination value θ 2c of measuring device A2；The correction value computing unit
For 1 correction values of θ being calculated；The sag value computing unit is used for the sag value for calculating measuring device A1；
The conducting wire sag measuring system based on inclination angle calculus of finite differences is surveyed using the conducting wire sag as described in one of claim 1-3
Amount method.
5. the conducting wire sag measuring system according to claim 4 based on inclination angle calculus of finite differences, it is characterised in that：The survey
Amount device A1 and measuring device A2 is multilayer screen, anti-interference, anti-lightning measuring device.
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| CN105180867B true CN105180867B (en) | 2018-05-08 |
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| NO942358L (en) * | 1994-06-20 | 1995-12-21 | Hafslund Nycomed As | Device for monitoring electric overhead lines |
| CN102288153B (en) * | 2011-06-14 | 2013-06-05 | 四川大学 | Online monitoring system and method of high-voltage line windage based on vibration power generation |
| CN103292659B (en) * | 2013-05-02 | 2016-06-15 | 西安工程大学 | Arc sag of wire of power transmission line measuring method based on angular transducer |
| CN103557837B (en) * | 2013-11-02 | 2015-07-22 | 国家电网公司 | On-line tower inclination monitoring method capable of correcting installation error of sensor |
| CN204988423U (en) * | 2015-08-28 | 2016-01-20 | 段林玲 | Water -level detecting device |
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