CN103941138B - OPGW line monitoring diagnosis system and monitoring, diagnosing method completely - Google Patents
OPGW line monitoring diagnosis system and monitoring, diagnosing method completely Download PDFInfo
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Abstract
A kind of OPGW line monitoring diagnosis system completely, this system can measure electric current on the OPGW line under normal condition and short-circuit conditions, can diagnose OPGW line whether normal operation by actual measurement number.System is made up of terminal, harvester, three parts of main website.Described terminal is arranged on OPGW line, utilizes electromagnetic induction principle to measure the electric current of OPGW circuit.Described harvester is arranged on overhead line structures, receives the data of terminal, then data are uploaded to main website.Harvester contains radio-frequency communication module and GPRS module.In described main website is arranged on transformer station or control centre, has mobile communication module, receives the data of harvester, and electric current and temperature to OPGW line are monitored, and analyzes the running status of OPGW line.The technology of the present invention is ripe, reliability is high.
Description
Technical field
The invention belongs to electric power monitoring technical field, be specifically related to a kind of power equipment, it is adaptable to 110～500kV with
OPGW line, it is possible to the temperature of monitoring OPGW line and electric current, and analyze the running status of OPGW line.Utilize normal condition and short circuit feelings
Electric current on OPGW line under condition, can diagnose whether OPGW line exception occurs.
Background technology
China 110～500kV transmission line of electricity widely used OPGW line is as order wire and lightning conducter (also referred to as Optical Fiber Composite frame
Vacant lot line), when properly functioning, certain electric current on OPGW line, can be induced, when there is asymmetry short circuit fault, OPGW line
Bigger short circuit current is flow through in upper meeting.The electric current that OPGW line flows through under normal condition and short-circuit conditions can cause heating, seriously
Time can cause communication disruption, affect transmission line of electricity safe and reliable operation.
Operations staff needs the electric current analyzed under normal condition and failure condition on OPGW line by simulation calculation at present,
But it is a lack of in running the real-time monitoring to OPGW line, can not find as early as possible when OPGW line occurs abnormal.In order to ensure
OPGW line normally works, and OPGW line is carried out monitoring and diagnosing completely by operation power department in the urgent need to utility unit.
Summary of the invention
The purpose of the application is to overcome the deficiency in prior art, proposes a kind of OPGW line monitoring diagnosis system completely.Should
Device can in real time, accurately measure electric current and temperature that OPGW line flows through, the running status of OPGW is analyzed, for system
Operations staff provides guidance.
The technical scheme of the application is as follows:
A kind of OPGW line monitoring diagnosis system completely, is made up of terminal, harvester, three parts of main website, it is characterized by:
Described terminal is arranged on OPGW line, utilizes electromagnetic induction principle to measure the electric current of OPGW circuit；
Described harvester is arranged on overhead line structures, receives the current data of the OPGW circuit that terminal is measured, then data
Upload to main website；In described main website is arranged on transformer station or control centre, receives the data of harvester, to the electric current of OPGW line and
Temperature is monitored, and analyzes the running status of OPGW line.
Described terminal includes induction coil, the CPU module of built-in AD function, temperature measurement module, terminal automatic electricity getting power module
With terminal radio frequency communication module, described induction coil is placed in terminal, is socketed on OPGW line with terminal, by electromagnetic induction in sense
The secondary answering coil obtains the analog quantity voltage signal that the electric current flow through to OPGW line is directly proportional, and described analog quantity voltage signal is defeated
Entering the low power consumption CPU module to built-in AD function, described analog quantity voltage signal becomes digital signal after AD conversion, described
CPU module is calculated voltage effective value, and then is converted into the OPGW line current virtual value of correspondence；Described temperature measurement module is arranged on
The position of induction coil, the temperature inversion of OPGW line is level signal by the temperature sensor of described temperature measurement module, passes through I/O port
Sending described CPU module to, OPGW line current virtual value is sent to terminal radio frequency and communicates mould by described CPU module with temperature data
Block, by terminal radio frequency communication module by the current effective value of OPGW line and temperature data uploading to harvester；Described terminal is certainly
Power taking power supply is the DC source needed for terminal offer.
Described harvester includes radio-frequency communication module, harvester automatic electricity getting power module and GPRS module, and harvester is asked for
Power supply module provides power supply for other two modules.Radio-frequency communication module and GPRS module connect, and radio-frequency communication module receives
The data of terminal, and it is sent to GPRS module by serial communication mode, GPRS module is sent to a distant place after receiving data
Main website.Owing to the communication distance of radio communication is less than 10 meters, the most each harvester can only receive the OPGW of proximal most position
Terminal on line.
Disclosed herein as well is a kind of OPGW line monitoring, diagnosing method based on aforementioned OPGW line monitoring diagnosis system completely,
It is characterized in that, said method comprising the steps of:
(1) inputting initial data to main website, the electric current including the earthing mode of each shaft tower section OPGW line, setting is out-of-limit
Definite value, temperature beyond limit definite value, general electric current more limit value is 30-50kA, and temperature beyond limit definite value is 200 DEG C；
(2) terminal detects the current value on each shaft tower section OPGW line and temperature in real time, and by harvester by described
Current value and temperature data uploading are to main website.
(3) if the current value on the OPGW line of detection has exceeded the out-of-limit threshold value of electric current set, or the temperature gathered surpasses
Crossed temperature beyond limit definite value, then main website sends alarm signal, otherwise continues executing with；
(4) if OPGW line is by tower ground connection, then step (5)-(7) are performed；If OPGW line is single-point grounding, then perform
Step (8)-(10)；
(5) judge whether transmission line of electricity is short-circuited according to the line protective devices of transformer station；
(6) when transmission line of electricity is in properly functioning, OPGW line is judged according to the current data on the OPGW line sensed
Whether reliable ground, if transmission line of electricity normal stream overload electric current, and the faradic current on OPGW line would be less than K* faradic current
Calculated value (K takes 0.5-1.0), then judge that OPGW line does not has reliable ground and sends alarm signal, faradic current therein
Calculated value refers to when transmission line of electricity normal stream overload electric current, calculates the faradic current on the OPGW line of gained theoretical
Value；
(7) when transmission line of electricity short circuit, judge that whether OPGW line is short according to the short-circuit current data flow through on OPGW line
Reliable ground in the case of road, if transmission line of electricity short circuit current flow, and the electric current on OPGW line would be less than K* the first short circuit current
Calculated value (K takes 0.5-1.0), then it is assumed that OPGW line does not has reliable ground and sends warning, the first short circuit current therein
Calculated value refers to when transmission line of electricity short circuit current flow, the electric current theoretical value flow through on OPGW line calculated；
(8) judge whether transmission line of electricity is short-circuited according to the line protective devices of transformer station；
(9) when transmission line of electricity is in properly functioning, OPGW line is judged according to the current data on the OPGW line sensed
Whether single-point grounding, if transmission line of electricity normal stream overload electric current, and the faradic current on OPGW line would be more than 10A, then judge
OPGW line does not has single-point grounding and sends alarm signal；
(10) when transmission line of electricity short circuit, judge that whether OPGW line is short according to the short-circuit current data flow through on OPGW line
Reliable ground in the case of road.If transmission line of electricity short circuit current flow, and the electric current on OPGW line would be less than K* the second short circuit current
Calculated value (K takes 0.5-1.0), then it is assumed that OPGW line does not has reliable ground and sends warning, the second short circuit current therein
Calculated value refers to when transmission line of electricity short circuit current flow, the electric current theoretical value flow through on OPGW line calculated.
The application is capable of following functions:
(1) electric current on each shaft tower section OPGW line and temperature are detected in real time；
(2) OPGW earthing mode is the most consistent with setting situation to utilize the OPGW line current under normal operation to judge；
(3) the OPGW line current under short-circuit conditions is utilized to judge OPGW whether reliable ground；
(4) if it is determined that OPGW line exists abnormal, warning is sent the most immediately.
The advantage of the application is as follows:
1, monitor in real time the operation conditions of OPGW, when occurring abnormal can and alarm.
2, certainty of measurement is high, and the certainty of measurement of normal operating current reaches 0.5 grade, and the certainty of measurement of short circuit current reaches 2
Level.
3, low in energy consumption, meet the requirement of longtime running.
4, without accessing conventional power source from outside, realize automatic electricity getting by solar panel and work.
5, technology maturation, reliability height, it is adaptable to 110～500kV transmission lines of electricity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the application OPGW line monitoring diagnosis system completely；
Fig. 2 be up in the case of OPGW line computation model；
Fig. 3 is the OPGW line computation model under short circuit fault condition；
Fig. 4 is OPGW line diagnostic method flow chart completely；
Fig. 5 is the schematic diagram of terminal；
Fig. 6 is the structured flowchart of harvester；
Fig. 7 is the structured flowchart of the automatic electricity getting power module in terminal or harvester；
Wherein 101 is main website, and 102 is harvester, and 102-1,102-2 ..., 102-n represent be arranged on shaft tower multiple
Harvester, 103 is terminal, and 103-1,103-2 ..., 103-n represent the multiple terminals installed on the line, and 104 is bus, 501
For induction coil, 502 is temperature measurement module, and 503 is AD analog-digital converter, and 504 is I/O input/output port, and 505 is automatic electricity getting
Module, 506 is radio-frequency communication module, and 601 is GPRS communication module, and 701 is solar panel, and 702 is solar panel
Input protection module, 703 is battery management module, and 704 is automotive grade ferric phosphate lithium cell group, and 705 export mould for voltage power
Block.
Detailed description of the invention
Below in conjunction with description such as figure, by specific embodiment, the technical scheme of the application is described in further detail.
This application discloses a kind of OPGW line on-line monitoring and diagnosis system, this system can measure normal condition and short circuit feelings
Electric current on OPGW line under condition, can diagnose OPGW line whether normal operation by measured data.System by terminal, harvester,
Main website three part composition.Described terminal is arranged on OPGW line, utilizes electromagnetic induction principle to measure the electric current of OPGW circuit.Eventually
End contains the low power consumption CPU module of built-in AD function, temperature measurement module, automatic electricity getting power module and radio-frequency communication module.Described
Harvester is arranged on overhead line structures, receives the data of terminal, then data are uploaded to main website.Harvester contains radio communication
Module and GPRS module.In described main website is arranged on transformer station or control centre, has mobile communication module, receives harvester
Data, electric current and temperature to OPGW line are monitored, and analyze the running status of OPGW line.
The OPGW line of the application monitoring diagnosis system structure completely is as it is shown in figure 1, by positioner terminal 103, harvester
102 and main website 101 3 part composition.103-1,103-2 ..., 103-n represent the multiple terminals installed on the line, 102-
1,102-2 ..., 102-n represent the multiple harvesters being arranged on shaft tower.Terminal 103 and harvester 102 are all for being applicable to open air
The low-power-consumption embedded microcomputer type device used, uses radio communication mode to carry out data biography between terminal 103 and harvester 102
Defeated.Main website 101 is an industrial control computer, in being installed on transformer station or control centre, for receiving harvester 102
Data also carry out analytical calculation.
The principle of terminal is as it is shown in figure 5, terminal 103 is socketed on OPGW line, and induction coil 501 is permissible by electromagnetic induction
Secondary at induction coil 501 obtains the low pressure molding analog quantity signal between-5V and+5V, and this voltage signal flows through with OPGW line
Electric current is directly proportional.First analog quantity voltage signal carries out low-pass filtering after entering mainboard, becomes after being then passed through a/d converter 503
Digital signal, digital signal sends CPU to by data/address bus and calculates, and CPU carries out root mean square calculation to digital signal and obtains electricity
It is pressed with valid value, and then is converted into the OPGW line current virtual value of correspondence.It is level letter that temperature measurement module 502 is used for temperature inversion
Number, send CPU to by IO input/output port 504 and calculate.Electric current and temperature data are sent to penetrate by CPU by data/address bus
Frequently communication module 506, upload to harvester 102 by radio communication by the current effective value of OPGW line.Automatic electricity getting module 505 energy
Solar energy power taking, output+5V voltage is enough utilized to use to other modules.
As shown in Figure 6, radio-frequency communication module 506 is for receiving the data that terminal 103 is uploaded for the principle of harvester.GPRS leads to
Letter module 601 for being uploaded to main website 101 by data.By 232 between radio-frequency communication module 506 and GPRS communication module 601
Serial ports carries out data transmission.Automatic electricity getting module 505 can utilize solar energy power taking, output+12V voltage to use to other modules.
OPGW line computation model under normal operation is as in figure 2 it is shown, there are two OPGW lines in this model, if EaAnd Za
Represent the induction electromotive force produced in every grade of Article 1 OPGW line and resistance value, E respectivelybAnd ZbRepresent Article 2 OPGW line respectively
The induction electromotive force produced in every grade and resistance value, RgRepresent the earth resistance of shaft tower.In view of the versatility of this model, we
At OPGW line and shaft tower, electricity consumption hinders R respectively1And R2Resistance represent two OPGW lines ground connection or earth-free two kinds on shaft tower
State, if ground connection, arranges R1=R2=0, if earth-free, R is set1=R2=1MΩ；Article two, OPGW line the most all can connect
Also can disconnect, use resistance R respectivelyaAnd RbResistance represent along the electrical connection of two OPGW lines of line direction and disconnect, if connected
R is then seta=Rb=0, if earth-free, R is seta=Rb=1MΩ。
Mesh equation under normal operation is:
Z in equation (1)aRepresent the self-impedance of Article 1 OPGW line, ZbRepresent the self-impedance of Article 2 OPGW line.IaRepresent
Flow through the cyclic currents of Article 1 OPGW line, IbRepresent the cyclic currents flowing through Article 2 OPGW line.M represent two OPGW lines it
Between mutual inductance.UaRepresent the voltage of Article 1 OPGW line, UbRepresent the voltage of Article 2 OPGW line.Sequence number (n-1) represents (n-1)th
The parameter of individual mesh, sequence number (n) represents that the parameter of the n-th mesh, sequence number (n+1) represent the parameter of (n+1)th mesh, such as Ia
(n-1) cyclic currents of Article 1 OPGW line, I are flow through in expression at (n-1)th meshaN () expression flows through first at the n-th mesh
The cyclic currents of bar OPGW line.Current value on each section OPGW line can be calculated by above-mentioned equation is solved.
Computation model under short circuit fault condition is as it is shown on figure 3, the equation that met of the (n-1)th mesh:
-[Rg+R1(n-1)]Ia(n-2)-RgIb(n-2)
+[Za(n-1)+2Rg+R1(n-1)+R1(n)]Ia(n-1)
+[2Rg+jωM]Ib(n-1)-[Rg+R1(n)]Ia(n)-RgIb(n)-RgIf1
=Ea(n-1)
-RgIa(n-2)-[Rg+R2(n-1)]Ib(n-2) (2)
+[2Rg+jωM]Ia(n-1)
+[Zb(n-1)+2Rg+R2(n-1)+R2(n)]Ib(n-1)
-RgIa(n)-[Rg+R2(n)]Ib(n)-RgIf1
=Eb(n-1)
The equation that n-th mesh meets:
-[Rg+R1(n)]Ia(n-1)-RgIb(n-1)
+[Za(n)+2Rg+R1(n)+R1(n+1)]Ia(n)
+[2Rg+jωM]Ib(n)-[Rg+R1(n+1)]Ia(n+1)-RgIb(n+1)+RgIf1+RgIf2
=Ea(n)
-RgIa(n-1)-[Rg+R2(n)]Ib(n-1) (3)
+[2Rg+jωM]Ia(n)
+[Zb(n)+2Rg+R2(n)+R2(n+1)]Ib(n)
-RgIa(n+1)-[Rg+R2(n+1)]Ib(n+1)+RgIf1+RgIf2
=Eb(n)
The equation that (n+1)th mesh meets:
-[Rg+R1(n+1)]Ia(n)-RgIb(n)
+[Za(n+1)+2Rg+R1(n+1)+R1(n+2)]Ia(n+1)
+[2Rg+jωM]Ib(n+1)-[Rg+R1(n+2)]Ia(n+2)-RgIb(n+2)-RgIf2
=Ea(n+1)
-RgIa(n)-[Rg+R2(n+1)]Ib(n) (4)
+[2Rg+jωM]Ia(n+1)
+[Zb(n+1)+2Rg+R2(n+1)+R2(n+2)]Ib(n+1)
-RgIa(n+2)-[Rg+R2(n+2)]Ib(n+2)-RgIf2
=Eb(n+1)
List and illustrate the equation that two ground connection mesh meet:
-RgIa(n-1)-RgIb(n-1)+RgIa(n)+RgIb(n)+[Rg+Rf1+Rf2]If1-Rf2If2
=-Rf2Id
RgIa(n)+RgIb(n)-RgIa(n+1)-RgIb(n+1)-Rf2If1+[Rg+Rf2+Rf3]If2 (5)
=Rf2Id
In the equation of above-mentioned (2)-(5), resistance Rf1And Rf3Represent the earth's surface equivalent electric between ground short circuit point and both sides shaft tower
Resistance, Rf2Represent the earth equivalent resistance.If1And If2Represent that short circuit current flows through the cyclic currents of both sides shaft tower.Other parameters and side
Journey (1) is consistent, repeats no more.
Being analyzed the electromagnetic environment after short circuit, short circuit current is had part and is flowed back to by the earth, and part passes through both sides
Shaft tower flows back to, and part is flowed back to by OPGW line.When short circuit current is by ground surface, it is equivalent to two resistance Rf1And Rf3。Rf1And Rf3
It is to be calculated by soil resistivity and considering of electromagnetic environment.When shaft tower, the short circuit current of relatively nearside is got
More, corresponding equivalent resistance is the least, compared with the short circuit current in the distally equivalent electric that to get short circuit current less, corresponding
Resistance is the least.The short circuit current part returned from the earth, is equivalent to a resistance Rf2, during due to close shaft tower, walk on shaft tower
Electric current is more, less by greatly flow back to, Rf2Relatively big, during away from shaft tower, walk the electric current on shaft tower less, flowed by the earth
That returns is more, Rf2Less.
If Fig. 4 is OPGW line inline diagnosis method flow diagram, based on OPGW line disclosed in the present application monitoring, diagnosing side completely
Method can diagnose the operation conditions of OPGW.Described OPGW line monitoring, diagnosing method completely comprises the following steps:
(1) inputting initial data to main website, the electric current including the earthing mode of each shaft tower section OPGW line, setting is out-of-limit
Definite value, temperature beyond limit definite value, general electric current more limit value is 30-50kA, and temperature beyond limit definite value is 200 DEG C；
(2) terminal detects the current value on each shaft tower section OPGW line and temperature in real time, and by harvester by described
Current value and temperature data uploading are to main website.
(3) if the current value on the OPGW line of detection has exceeded the out-of-limit threshold value of electric current set, or the temperature gathered surpasses
Crossed temperature beyond limit definite value, then main website sends alarm signal, otherwise continues executing with；
(4) if OPGW line is by tower ground connection, then step (5)-(7) are performed；If OPGW line is single-point grounding, then perform
Step (8)-(10)；
(5) judge whether transmission line of electricity is short-circuited according to the line protective devices of transformer station；
(6) when transmission line of electricity is in properly functioning, OPGW line is judged according to the current data on the OPGW line sensed
Whether reliable ground, if transmission line of electricity normal stream overload electric current, and the faradic current on OPGW line would be less than K* faradic current
Calculated value (K takes 0.5-1.0), then judge that OPGW line does not has reliable ground and sends alarm signal, faradic current therein
Calculated value refers to when transmission line of electricity normal stream overload electric current, calculates the faradic current on the OPGW line of gained theoretical
Value；
(7) when transmission line of electricity short circuit, judge that whether OPGW line is short according to the short-circuit current data flow through on OPGW line
Reliable ground in the case of road, if transmission line of electricity short circuit current flow, and the electric current on OPGW line would be less than K* the first short circuit current
Calculated value (K takes 0.5-1.0), then it is assumed that OPGW line does not has reliable ground and sends warning, the first short circuit current therein
Calculated value refers to when transmission line of electricity short circuit current flow, the electric current theoretical value flow through on OPGW line calculated；
(8) judge whether transmission line of electricity is short-circuited according to the line protective devices of transformer station；
(9) when transmission line of electricity is in properly functioning, OPGW line is judged according to the current data on the OPGW line sensed
Whether single-point grounding, if transmission line of electricity normal stream overload electric current, and the faradic current on OPGW line would be more than 10A, then judge
OPGW line does not has single-point grounding and sends alarm signal；
(10) when transmission line of electricity short circuit, judge that whether OPGW line is short according to the short-circuit current data flow through on OPGW line
Reliable ground in the case of road.If transmission line of electricity short circuit current flow, and the electric current on OPGW line would be less than K* the second short circuit current
Calculated value (K takes 0.5-1.0), then it is assumed that OPGW line does not has reliable ground and sends warning, the second short circuit current therein
Calculated value refers to when transmission line of electricity short circuit current flow, the electric current theoretical value flow through on OPGW line calculated.
The principle of the automatic electricity getting power module in terminal or harvester is as it is shown in fig. 7, automatic electricity getting power supply is by solaode
Plate 701, solar panel input protection module 702, battery management module 703, PHOSPHORIC ACID TECH.GRADE lithium iron battery group 704, many
Voltage power output module 705 forms.Wherein solar panel 701 is used for converting solar energy into electrical energy, solaode
The input protection module 702 of plate 701 is responsible in the case of fluctuation occurs in illumination providing protection for late-class circuit.Battery management module
The front end input energy of wide scope is assigned to battery or load, again by battery in the case of front end does not input by 703
Energy is supplied to load.PHOSPHORIC ACID TECH.GRADE lithium iron battery group 704 can carry under the ambient temperature of subzero 40 to 70 degrees centigrade
Periodical energy is entirely put for 1000 full punchings.Many electricity rail power output modules 705 are to exceed after specified output 20% height close to 90%
Efficiency provides+5V or+12V voltage for successive load.
Claims (7)
1. an OPGW line monitoring, diagnosing method based on OPGW line monitoring diagnosis system completely, the monitoring completely of described OPGW line is examined
Disconnected system includes terminal, harvester, main website；It is characterized in that, said method comprising the steps of:
(1) input initial data to main website, more limit including the earthing mode of each shaft tower section OPGW line, the electric current of setting
Value, temperature beyond limit definite value, electric current more limit value is 30-50kA, and temperature beyond limit definite value is 200 DEG C；
(2) terminal detects the current value on each shaft tower section OPGW line and temperature in real time, and by harvester by described electric current
Value and temperature data uploading are to main website；
(3) if the current value on the OPGW line of detection has exceeded the out-of-limit threshold value of electric current set, or the temperature gathered exceedes
Temperature beyond limit definite value, then main website sends alarm signal, otherwise continues executing with；
(4) if OPGW line is by tower ground connection, then step (5)-(7) are performed；If OPGW line is single-point grounding, then perform step
(8)-(10)；
(5) judge whether transmission line of electricity is short-circuited according to the line protective devices of transformer station；
(6) when transmission line of electricity is in properly functioning, whether OPGW line is judged according to the current data on the OPGW line sensed
Reliable ground, if transmission line of electricity normal stream overload electric current, and the faradic current on OPGW line would be theoretical less than K* faradic current
Value of calculation, then judge that OPGW line does not has reliable ground and sends alarm signal, and faradic current calculated value therein refers to work as
During transmission line of electricity normal stream overload electric current, calculate the faradic current theoretical value on the OPGW line of gained；Wherein, K takes 0.5-
1.0；
(7) when transmission line of electricity short circuit, judge that whether OPGW line is in short circuit feelings according to the short-circuit current data flow through on OPGW line
Reliable ground under condition, if transmission line of electricity short circuit current flow, and the electric current on OPGW line would be theoretical less than K* the first short circuit current
Value of calculation, then it is assumed that OPGW line does not has reliable ground and sends warning, the first short circuit current calculated value therein refers to work as
Transmission line of electricity short circuit current flow, the electric current theoretical value flow through on OPGW line calculated, wherein, K takes 0.5-1.0；
(8) judge whether transmission line of electricity is short-circuited according to the line protective devices of transformer station；
(9) when transmission line of electricity is in properly functioning, whether OPGW line is judged according to the current data on the OPGW line sensed
Single-point grounding, if transmission line of electricity normal stream overload electric current, and the faradic current on OPGW line would be more than 10A, then judge OPGW
Line does not has single-point grounding and sends alarm signal；
(10) when transmission line of electricity short circuit, judge that whether OPGW line is in short circuit feelings according to the short-circuit current data flow through on OPGW line
Reliable ground under condition；If transmission line of electricity short circuit current flow, and the electric current on OPGW line would be theoretical less than K* the second short circuit current
Value of calculation, then it is assumed that OPGW line does not has reliable ground and sends warning, the second short circuit current calculated value therein refers to work as
Transmission line of electricity short circuit current flow, the electric current theoretical value flow through on OPGW line calculated, wherein, K takes 0.5-1.0.
2. the OPGW line monitoring diagnosis system completely using monitoring, diagnosing method described in claim 1, it is characterised in that:
Described terminal is arranged on OPGW line the position near shaft tower, utilizes electromagnetic induction principle to measure the electric current of OPGW circuit,
Utilize the temperature on temperature sensor measurement OPGW line；
Described harvester is arranged on overhead line structures, with terminal with the use of, receive terminal measure the electric current of OPGW circuit, temperature
Degrees of data, then data are uploaded to main website；
In described main website is arranged on transformer station or control centre, receives the data of harvester, and electric current and temperature to OPGW line enter
Row monitoring, analyzes the running status of OPGW line.
OPGW line the most according to claim 2 monitoring diagnosis system completely, it is characterised in that:
Described terminal includes induction coil, the CPU module of built-in AD function, temperature measurement module, terminal automatic electricity getting power module and end
End radio-frequency communication module, described induction coil is placed in terminal, is socketed on OPGW line with terminal, by electromagnetic induction at the line of induction
The secondary of circle obtains the analog quantity voltage signal that the electric current flow through to OPGW line is directly proportional, and described analog quantity voltage signal inputs extremely
The low power consumption CPU module of built-in AD function, described analog quantity voltage signal becomes digital signal, described CPU after AD conversion
Module is calculated voltage effective value, and then is converted into the OPGW line current virtual value of correspondence；Described temperature measurement module is arranged on sense
Answering the position of coil, the temperature inversion of OPGW line is level signal by the temperature sensor of described temperature measurement module, is passed by I/O port
Giving described CPU module, OPGW line current virtual value is sent to terminal radio frequency and communicates mould by described CPU module with temperature data
Block, by terminal radio frequency communication module by the current effective value of OPGW line and temperature data uploading to harvester；Described terminal is certainly
Power taking power supply is the DC source needed for terminal offer.
OPGW line the most according to claim 3 monitoring diagnosis system completely, it is characterised in that:
Described terminal automatic electricity getting power module includes: solar panel, solar panel input protection module, cell tube
Reason module, lithium battery group, power output module, these sequence of modules connect, and final output+5V voltage is for other each moulds of terminal
Block uses.
OPGW line the most according to claim 2 monitoring diagnosis system completely, it is characterised in that:
Described harvester includes radio-frequency communication module, harvester automatic electricity getting power module and GPRS module, harvester automatic electricity getting electricity
Source module provides power supply, radio-frequency communication module and GPRS module to connect for other two modules, and radio-frequency communication module receives terminal
Data, and be sent to GPRS module by serial communication mode, GPRS module is sent to the main website in a distant place after receiving data.
OPGW line the most according to claim 5 monitoring diagnosis system completely, it is characterised in that:
Described harvester automatic electricity getting power module includes: solar panel, solar panel input protection module, battery
Management module, lithium battery group, power output module, these sequence of modules connect, final output+12V voltage for harvester other
Module uses.
OPGW line the most according to claim 3 monitoring diagnosis system completely, it is characterised in that:
The CPU module of the built-in AD function of described terminal is low-power chip, built-in 12 bit AD sample chips, merit time properly functioning
Consumption is less than 10mW, temperature range-40-70 DEG C.
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| CN105680994B (en) * | 2016-01-28 | 2020-12-04 | 中国电力科学研究院 | LDPC coding method for transmission link of monitoring data of power transmission line |
| CN106202637B (en) * | 2016-06-29 | 2020-01-10 | 国网辽宁省电力有限公司沈阳供电公司 | OPGW system grounding short circuit current analysis method based on extended phase component method |
| CN106771490A (en) * | 2016-12-22 | 2017-05-31 | 上海欧秒电力监测设备有限公司 | A kind of OPGW terminal monitorings system |
| CN106908653A (en) * | 2017-04-27 | 2017-06-30 | 上海欧秒电力监测设备有限公司 | OPGW on-line monitoring systems and method |
| CN107230013B (en) * | 2017-05-11 | 2021-01-05 | 华北电力大学 | Method for identifying abnormal power consumption and time positioning of distribution network users under unsupervised learning |
| CN109000716B (en) * | 2018-06-06 | 2020-06-02 | 清华大学 | Transmission line galloping monitoring method based on OPGW ground wire induction current |
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