CN103941138A - OPGW whole-wire monitoring and diagnosing system and method - Google Patents
OPGW whole-wire monitoring and diagnosing system and method Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
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- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
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Abstract
The invention provides an OPGW online monitoring and diagnosing system. By means of the system, currents of an OPGW can be measured under normal and short-circuit conditions, and whether the OPGW operates normally or not can be diagnosed through actually-measured data. The system is composed of a terminal, a collector and a master station. The terminal is arranged on the OPGW, and the currents of the OPGW are measured by means of the electromagnetic induction principle. The collector is arranged on an overhead wire structure, receives data of the terminal, and uploads the data to the master station. The collector comprises a radio frequency communication module and a GPRS module. The master station is arranged inside a transformer substation or a dispatching center and provided with a mobile communication module, and the mobile communication module is used for receiving the data of the collector, monitoring the currents and temperature of the OPGW, and analyzing the operation state of the OPGW. The OPGW online monitoring and diagnosing system has the mature technology and is high in reliability.
Description
Technical field
The invention belongs to electric power monitoring technical field, be specifically related to a kind of power equipment, be applicable to 110～500kV with OPGW line, can monitor temperature and the electric current of OPGW line, and analyze the running status of OPGW line.Utilize electric current on the OPGW line under normal condition and short-circuit conditions, can diagnose OPGW line whether to occur extremely.
Background technology
China 110～500kV transmission line of electricity extensively adopts OPGW line as order wire and lightning conducter (also claiming Optical Fiber composite overhead Ground Wire), in the time of normal operation, on OPGW line, can induce certain electric current, in the time there is asymmetry short circuit fault, on OPGW line, can flow through larger short-circuit current.The electric current that OPGW line flows through under normal condition and short-circuit conditions can cause heating, when serious, can cause communication disruption, affects transmission line of electricity safe and reliable operation.
At present operations staff need to analyze the electric current on OPGW line under normal condition and failure condition by simulation calculation, but lacks the Real-Time Monitoring to OPGW line in operational process, when can not find as early as possible appears when abnormal in OPGW line.In order to ensure that OPGW line normally works, operation power department carries out all fronts detection and diagnosis in the urgent need to utility unit to OPGW line.
Summary of the invention
The application's object is the deficiency overcoming in prior art, proposes a kind of OPGW line monitoring diagnosis system completely.This device can be measured electric current and the temperature that OPGW linear flow is crossed in real time, exactly, and the running status of OPGW is analyzed, and for system, operations staff provides guidance.
The application's technical scheme is as follows:
A kind of OPGW line monitoring diagnosis system completely, is made up of terminal, collector, 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 collector is arranged on overhead line structures, the current data of the OPGW circuit that receiving terminal is measured, then data upload is arrived to main website; Described main website is arranged in transformer station or dispatching center, receives the data of collector, and electric current and temperature to OPGW line are monitored, and analyzes the running status of OPGW line.
Described terminal comprises inductive coil, the CPU module of built-in AD function, temperature measurement module, terminal automatic electricity getting power module and terminal radio frequency communication module, described inductive coil is placed in terminal, be socketed on OPGW line with terminal, obtain at the secondary of inductive coil the analog quantity voltage signal that the electric current crossed to OPGW linear flow is directly proportional by electromagnetic induction, described analog quantity voltage signal inputs to the low power consumption CPU module of built-in AD function, described analog quantity voltage signal becomes digital signal after AD conversion, described CPU module calculates voltage effective value, and then convert out corresponding OPGW line current effective value, described temperature measurement module is arranged on the position of inductive coil, the temperature sensor of described temperature measurement module is level signal by the temperature inversion of OPGW line, give described CPU module by IO oral instructions, OPGW line current effective value and temperature data are sent to terminal radio frequency communication module by described CPU module, by terminal radio frequency communication module, the current effective value of OPGW line and temperature data uploading arrived to collector, described terminal automatic electricity getting power supply provides required direct supply for terminal.
Described collector comprises radio-frequency communication module, collector automatic electricity getting power module and GPRS module, and collector automatic electricity getting power module provides power supply for other two modules.Radio-frequency communication module is connected with GPRS module, the data of radio-frequency communication module receiving terminal, and send to GPRS module by serial communication mode, and GPRS module receives the main website that sends to a distant place after data.Because the communication distance of radio communication is no more than 10 meters, therefore each collector can only receive the terminal on the OPGW line of proximal most position.
Disclosed herein as well is a kind of OPGW line monitoring, diagnosing method based on aforementioned OPGW line all fronts monitoring diagnosis system, it is characterized in that, said method comprising the steps of:
(1) to main website input raw data, comprise earthing mode, the out-of-limit definite value of electric current of setting, the temperature beyond limit definite value of each shaft tower section OPGW line, the general out-of-limit definite value of electric current is 30-50kA, temperature beyond limit definite value is 200 DEG C;
(2) terminal detects current value and the temperature on each shaft tower section OPGW line in real time, and by collector, described current value and temperature data uploading is arrived to main website.
(3) if the current value on the OPGW line detecting has exceeded the electric current out-of-limit threshold value of setting, or the temperature gathering exceeded temperature beyond limit definite value, and main website sends alerting signal, otherwise continues to carry out;
(4) if OPGW line is by tower ground connection, execution step (5)-(7); If OPGW line is single-point grounding, execution step (8)-(10);
(5) judge according to the line protective devices of transformer station whether transmission line of electricity is short-circuited;
(6) when transmission line of electricity is during in normal operation, judge whether reliable ground of OPGW line according to the current data on responded to OPGW line, if transmission line of electricity normally flows through load current, and induction current on OPGW line is less than K* induction current calculated value (K gets 0.5-1.0), judge that OPGW line does not have reliable ground and sends alerting signal, induction current calculated value wherein refers in the time that transmission line of electricity normally flows through load current, the induction current theoretical value on the OGW line of calculating gained;
(7) in the time of transmission line of electricity short circuit, judge whether reliable ground under short-circuit conditions of OPGW line according to the short-circuit current data that flow through on OPGW line, if transmission line of electricity short circuit current flow, and electric current on OPGW line is less than K* the first short-circuit current calculated value (K gets 0.5-1.0), think that OPGW line does not have reliable ground and sends warning, the first short-circuit current calculated value wherein refers to when transmission line of electricity short circuit current flow, and that calculates flows through the electric current theoretical value on OPGW line;
(8) judge according to the line protective devices of transformer station whether transmission line of electricity is short-circuited;
(9) when transmission line of electricity is during in normal operation, judge the whether single-point grounding of OPGW line according to the current data on responded to OPGW line, if transmission line of electricity normally flows through load current, and induction current on OPGW line is greater than 10A, judges that OPGW line does not have single-point grounding and sends alerting signal;
(10), in the time of transmission line of electricity short circuit, judge whether reliable ground under short-circuit conditions of OPGW line according to the short-circuit current data that flow through on OPGW line.If transmission line of electricity short circuit current flow, and electric current on OPGW line is less than K* the second short-circuit current calculated value (K gets 0.5-1.0), think that OPGW line does not have reliable ground and sends warning, the second short-circuit current calculated value wherein refers to when transmission line of electricity short circuit current flow, and that calculates flows through the electric current theoretical value on OPGW line.
The application can realize following functions:
(1) detect in real time electric current and the temperature on each shaft tower section OPGW line;
(2) utilize the OPGW line current under normal operation to judge that whether OPGW earthing mode is consistent with setting situation;
(3) utilize OPGW line current under short-circuit conditions to judge whether reliable ground of OPGW;
(4) abnormal if judge that OPGW line exists, send immediately warning.
The application's advantage is as follows:
1, the operation conditions of Real-Time Monitoring OPGW, occur when abnormal can and alarm.
2, measuring accuracy is high, and the measuring accuracy of normal running current reaches 0.5 grade, and the measuring accuracy of short-circuit current reaches 2 grades.
3, low in energy consumption, meet the requirement of long-time running.
4, without from outside access conventional power source, realize automatic electricity getting work by solar panel.
5, technology maturation, reliability are high, are applicable to 110～500kV transmission line of electricity.
Brief description of the drawings
Fig. 1 is the application OPGW line structural representation of monitoring diagnosis system completely;
Fig. 2 is the OPGW line computation model under normal operation;
Fig. 3 is the OPGW line computation model in short trouble situation;
Fig. 4 is OPGW line diagnostic method process flow diagram completely;
Fig. 5 is the schematic diagram of terminal;
Fig. 6 is the structured flowchart of collector;
Fig. 7 is the structured flowchart of the automatic electricity getting power module in terminal or collector;
Wherein 101 is main website, 102 is collector, 102-1, 102-2, 102-n represents to be arranged on the multiple collectors on shaft tower, 103 is terminal, 103-1, 103-2, 103-n represents to install multiple terminals on the line, 104 is bus, 501 is inductive coil, 502 is temperature measurement module, 503 is AD analog to digital converter, 504 is I/O input/output port, 505 is automatic electricity getting module, 506 is radio-frequency communication module, 601 is GPRS communication module, 701 is solar panel, 702 is solar panel input protection module, 703 is battery management module, 704 is automotive grade ferric phosphate lithium cell group, 705 is voltage power output module.
Embodiment
, the application's technical scheme is described in further detail by specific embodiment as figure below in conjunction with instructions.
The application discloses a kind of OPGW line on-line monitoring and diagnosis system, and this system can be measured electric current on the OPGW line under normal condition and short-circuit conditions, can diagnose whether normal operation of OPGW line by measured data.System is made up of terminal, collector, three parts of main website.Described terminal is arranged on OPGW line, utilizes electromagnetic induction principle to measure the electric current of OPGW circuit.Low power consumption CPU module, temperature measurement module, automatic electricity getting power module and radio-frequency communication module that terminal has comprised built-in AD function.Described collector is arranged on overhead line structures, the data of receiving terminal, then data upload is arrived to main website.Collector has comprised radio-frequency communication module and GPRS module.Described main website is arranged in transformer station or dispatching center, has mobile communication module, receives the data of collector, and electric current and temperature to OPGW line are monitored, and analyzes the running status of OPGW line.
The application's OPGW line completely monitoring diagnosis system structure as shown in Figure 1, is made up of locating device terminal 103,101 3 parts of collector 102 and main website.103-1,103-2 ..., 103-n represents to install multiple terminals on the line, 102-1,102-2 ..., 102-n represents to be arranged on the multiple collectors on shaft tower.Terminal 103 and collector 102 are all the low-power-consumption embedded microcomputer type device that is applicable to outdoor use, between terminal 103 and collector 102, adopt radio communication mode to carry out data transmission.Main website 101 is an industrial control computer, is installed in transformer station or dispatching center, for receiving the data of collector 102 and carrying out analytical calculation.
As shown in Figure 5, terminal 103 is socketed on OPGW line the principle of terminal, inductive coil 501 by electromagnetic induction can the secondary acquisition-5V of inductive coil 501 and+low-voltage simulation amount signal between 5V, this voltage signal is directly proportional to the electric current that OPGW linear flow is crossed.First analog quantity voltage signal carries out low-pass filtering after entering mainboard, then after AD converter 503, become digital signal, digital signal sends CPU to by data bus and calculates, CPU carries out root mean square calculation to digital signal and obtains voltage effective value, and then converts out corresponding OPGW line current effective value.It is level signal that temperature measurement module 502 is used for temperature inversion, sends CPU to calculate by IO input/output port 504.CPU sends to radio-frequency communication module 506 by data bus by electric current and temperature data, by radio communication, the current effective value of OPGW line is uploaded to collector 102.Automatic electricity getting module 505 can be utilized sun power power taking, and output+5V voltage uses to other modules.
The principle of collector as shown in Figure 6, the data that radio-frequency communication module 506 is uploaded for receiving terminal 103.GPRS communication module 601 for by data upload to main website 101.Between radio-frequency communication module 506 and GPRS communication module 601, carry out data transmission by 232 serial ports.Automatic electricity getting module 505 can be utilized sun power power taking, and output+12V voltage uses to other modules.
OPGW line computation model under normal operation as shown in Figure 2, has two OPGW lines in this model, establish E
aand Z
arepresent respectively the induction electromotive force and the resistance value that in every grade, Article 1 OPGW line, produce, E
band Z
brepresent respectively the induction electromotive force and the resistance value that in every grade, Article 2 OPGW line, produce, R
grepresent the stake resistance of shaft tower.Consider the versatility of this model, we use respectively resistance R at OPGW line and shaft tower place
1and R
2resistance represent two OPGW lines ground connection or earth-free two states on shaft tower, if ground connection arranges R
1=R
2=0, if earth-free, R is set
1=R
2=1M Ω; Article two, OPGW line is electric above all can connect also and can disconnect, and uses respectively resistance R
aand R
bresistance represent along the electrical connection of two OPGW lines of line direction and disconnect, if connected, R is set
a=R
b=0, if earth-free, R is set
a=R
b=1M.
Mesh equation under normal operation is:
Z in equation (1)
arepresent the self-impedance of Article 1 OPGW line, Z
brepresent the self-impedance of Article 2 OPGW line.I
arepresent to flow through the cyclic currents of Article 1 OPGW line, I
brepresent to flow through the cyclic currents of Article 2 OPGW line.M represents two mutual inductances between OPGW line.U
arepresent the voltage of Article 1 OPGW line, U
brepresent the voltage of Article 2 OPGW line.Sequence number (n-1) represents the parameter of n-1 mesh, and sequence number (n) represents the parameter of n mesh, and sequence number (n+1) represents the parameter of n+1 mesh, for example I
a(n-1) be illustrated in n-1 mesh and flow through the cyclic currents of Article 1 OPGW line, I
a(n) be illustrated in n mesh and flow through the cyclic currents of Article 1 OPGW line.By being solved, above-mentioned equation can calculate current value on each section OPGW line.
Computation model in short trouble situation as shown in Figure 3, the equation that n-1 mesh is satisfied:
-[R
g+R
1(n-1)]I
a(n-2)-R
gI
b(n-2)
+[Z
a(n-1)+2R
g+R
1(n-1)+R
1(n)]I
a(n-1)
+[2R
g+jωM]I
b(n-1)-[R
g+R
1(n)]I
a(n)-R
gI
b(n)-R
gI
f1
=E
a(n-1)
-R
gI
a(n-2)-[R
g+R
2(n-1)]I
b(n-2) (2)
+[2R
g+jωM]I
a(n-1)
+[Z
b(n-1)+2R
g+R
2(n-1)+R
2(n)]I
b(n-1)
-R
gI
a(n)-[R
g+R
2(n)]I
b(n)-R
gI
f1
=E
b(n-1)
N the equation that mesh is satisfied:
-[R
g+R
1(n)]I
a(n-1)-R
gI
b(n-1)
+[Z
a(n)+2R
g+R
1(n)+R
1(n+1)]I
a(n)
+[2R
g+jωM]I
b(n)-[R
g+R
1(n+1)]I
a(n+1)-R
gI
b(n+1)+R
gI
f1+R
gI
f2
=E
a(n)
-R
gI
a(n-1)-[R
g+R
2(n)]I
b(n-1) (3)
+[2R
g+jωM]I
a(n)
+[Z
b(n)+2R
g+R
2(n)+R
2(n+1)]I
b(n)
-R
gI
a(n+1)-[R
g+R
2(n+1)]I
b(n+1)+R
gI
f1+R
gI
f2
=E
b(n)
N+1 the equation that mesh is satisfied:
-[R
g+R
1(n+1)]I
a(n)-R
gI
b(n)
+[Z
a(n+1)+2R
g+R
1(n+1)+R
1(n+2)]I
a(n+1)
+[2R
g+jωM]I
b(n+1)-[R
g+R
1(n+2)]I
a(n+2)-R
gI
b(n+2)-R
gI
f2
=E
a(n+1)
-R
gI
a(n)-[R
g+R
2(n+1)]I
b(n) (4)
+[2R
g+jωM]I
a(n+1)
+[Z
b(n+1)+2R
g+R
2(n+1)+R
2(n+2)]I
b(n+1)
-R
gI
a(n+2)-[R
g+R
2(n+2)]I
b(n+2)-R
gI
f2
=E
b(n+1)
List two equations that ground connection mesh is satisfied of diagram:
-R
gI
a(n-1)-R
gI
b(n-1)+R
gI
a(n)+R
gI
b(n)+[R
g+R
f1+R
f2]I
f1-R
f2I
f2
=-R
f2I
d
R
gI
a(n)+R
gI
b(n)-R
gI
a(n+1)-R
gI
b(n+1)-R
f2I
f1+[R
g+R
f2+R
f3]I
f2 (5)
=R
f2I
d
In the equation of above-mentioned (2)-(5), resistance R
f1and R
f3represent the earth's surface equivalent resistance between ground short circuit point and both sides shaft tower, R
f2represent the earth equivalent resistance.I
f1and I
f2represent that short-circuit current flows through the cyclic currents of both sides shaft tower.Other parameters are consistent with equation (1), repeat no more.
Electromagnetic environment after short circuit is analyzed, and short-circuit current has part and flows back to by the earth, and part flows back to by both sides shaft tower, and part is returned by OPGW linear flow.When short-circuit current passes through ground surface, be equivalent to two resistance R
f1and R
f3.R
f1and R
f3to calculate by considering of soil resistivity and electromagnetic environment.During near shaft tower, get more, corresponding equivalent resistance just less compared with the short-circuit current of nearside, get short-circuit current less compared with the short-circuit current in distally, corresponding equivalent resistance is just little.The short-circuit current part of returning from the earth, is equivalent to a resistance R
f2, due to when the shaft tower, walk electric current on shaft tower more, what flow back to by the earth is less, R
f2larger, during away from shaft tower, walk electric current on shaft tower less, what flow back to by the earth is more, R
f2less.
If Fig. 4 is OPGW line inline diagnosis method flow diagram, can diagnose the operation conditions of OPGW based on the disclosed OPGW line of the application all fronts monitoring, diagnosing method.Described OPGW line completely monitoring, diagnosing method comprises the following steps:
(1) to main website input raw data, comprise earthing mode, the out-of-limit definite value of electric current of setting, the temperature beyond limit definite value of each shaft tower section OPGW line, the general out-of-limit definite value of electric current is 30-50kA, temperature beyond limit definite value is 200 DEG C;
(2) terminal detects current value and the temperature on each shaft tower section OPGW line in real time, and by collector, described current value and temperature data uploading is arrived to main website.
(3) if the current value on the OPGW line detecting has exceeded the electric current out-of-limit threshold value of setting, or the temperature gathering exceeded temperature beyond limit definite value, and main website sends alerting signal, otherwise continues to carry out;
(4) if OPGW line is by tower ground connection, execution step (5)-(7); If OPGW line is single-point grounding, execution step (8)-(10);
(5) judge according to the line protective devices of transformer station whether transmission line of electricity is short-circuited;
(6) when transmission line of electricity is during in normal operation, judge whether reliable ground of OPGW line according to the current data on responded to OPGW line, if transmission line of electricity normally flows through load current, and induction current on OPGW line is less than K* induction current calculated value (K gets 0.5-1.0), judge that OPGW line does not have reliable ground and sends alerting signal, induction current calculated value wherein refers in the time that transmission line of electricity normally flows through load current, the induction current theoretical value on the OGW line of calculating gained;
(7) in the time of transmission line of electricity short circuit, judge whether reliable ground under short-circuit conditions of OPGW line according to the short-circuit current data that flow through on OPGW line, if transmission line of electricity short circuit current flow, and electric current on OPGW line is less than K* the first short-circuit current calculated value (K gets 0.5-1.0), think that OPGW line does not have reliable ground and sends warning, the first short-circuit current calculated value wherein refers to when transmission line of electricity short circuit current flow, and that calculates flows through the electric current theoretical value on OPGW line;
(8) judge according to the line protective devices of transformer station whether transmission line of electricity is short-circuited;
(9) when transmission line of electricity is during in normal operation, judge the whether single-point grounding of OPGW line according to the current data on responded to OPGW line, if transmission line of electricity normally flows through load current, and induction current on OPGW line is greater than 10A, judges that OPGW line does not have single-point grounding and sends alerting signal;
(10), in the time of transmission line of electricity short circuit, judge whether reliable ground under short-circuit conditions of OPGW line according to the short-circuit current data that flow through on OPGW line.If transmission line of electricity short circuit current flow, and electric current on OPGW line is less than K* the second short-circuit current calculated value (K gets 0.5-1.0), think that OPGW line does not have reliable ground and sends warning, the second short-circuit current calculated value wherein refers to when transmission line of electricity short circuit current flow, and that calculates flows through the electric current theoretical value on OPGW line.
As shown in Figure 7, automatic electricity getting power supply is made up of solar panel 701, solar panel input protection module 702, battery management module 703, PHOSPHORIC ACID TECH.GRADE lithium iron battery group 704, multivoltage power output module 705 principle of the automatic electricity getting power module in terminal or collector.Wherein solar panel 701 is for converting solar energy into electrical energy, the input protection module 702 of solar panel 701 be responsible for illumination emersion wave emotionally under condition for late-class circuit provides protection.Battery management module 703 to battery or load, offers load by the energy of battery again by the front end input energy distribution of wide region in the situation that front end is not inputted.PHOSPHORIC ACID TECH.GRADE lithium iron battery group 704 can provide 1000 full punchings entirely to put periodical energy under the environment temperature of subzero 40 to 70 degree centigrade.Many electric rail power output modules 705 taking exceed specified output 20% rear approach 90% high-level efficiency as provide+5V of rear class load or+12V voltage.
Claims (7)
1. an OPGW line monitoring diagnosis system completely, is made up of terminal, collector, three parts of main website, it is characterized by:
Described terminal is arranged on the position near shaft tower on OPGW line, utilizes electromagnetic induction principle to measure the electric current of OPGW circuit, utilizes the temperature on temperature sensor measurement OPGW line;
Described collector is arranged on overhead line structures, is used in conjunction with terminal, and electric current, the temperature data of the OPGW circuit that receiving terminal is measured, then data upload is arrived to main website;
Described main website is arranged in transformer station or dispatching center, receives the data of collector, and electric current and temperature to OPGW line are monitored, and analyzes the running status of OPGW line.
2. OPGW line according to claim 1 monitoring diagnosis system completely, is characterized in that:
Described terminal comprises inductive coil, the CPU module of built-in AD function, temperature measurement module, terminal automatic electricity getting power module and terminal radio frequency communication module, described inductive coil is placed in terminal, be socketed on OPGW line with terminal, obtain at the secondary of inductive coil the analog quantity voltage signal that the electric current crossed to OPGW linear flow is directly proportional by electromagnetic induction, described analog quantity voltage signal inputs to the low power consumption CPU module of built-in AD function, described analog quantity voltage signal becomes digital signal after AD conversion, described CPU module calculates voltage effective value, and then convert out corresponding OPGW line current effective value, described temperature measurement module is arranged on the position of inductive coil, the temperature sensor of described temperature measurement module is level signal by the temperature inversion of OPGW line, give described CPU module by IO oral instructions, OPGW line current effective value and temperature data are sent to terminal radio frequency communication module by described CPU module, by terminal radio frequency communication module, the current effective value of OPGW line and temperature data uploading arrived to collector, described terminal automatic electricity getting power supply provides required direct supply for terminal.
3. OPGW line according to claim 2 monitoring diagnosis system completely, is characterized in that:
Described terminal automatic electricity getting power module comprises: solar panel, solar panel input protection module, battery management module, lithium battery group, power output module; these sequence of modules connect, and final output+5V voltage is for other modules of terminal.
4. OPGW line according to claim 1 monitoring diagnosis system completely, is characterized in that:
Described collector comprises radio-frequency communication module, collector automatic electricity getting power module and GPRS module, collector automatic electricity getting power module provides power supply for other two modules, radio-frequency communication module is connected with GPRS module, the data of radio-frequency communication module receiving terminal, and sending to GPRS module by serial communication mode, GPRS module receives the main website that sends to a distant place after data.
5. OPGW line according to claim 4 monitoring diagnosis system completely, is characterized in that:
Described collector automatic electricity getting power module comprises: solar panel, solar panel input protection module, battery management module, lithium battery group, power output module; these sequence of modules connect, and final output+12V voltage is for other modules of collector.
6. OPGW line according to claim 2 monitoring diagnosis system completely, is characterized 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, while normally operation power consumption lower than 10mW, temperature range-40-70 DEG C.
7. based on the OPGW line monitoring, diagnosing method for monitoring diagnosis system completely of OPGW line described in claim 1-6, it is characterized in that, said method comprising the steps of:
(1) to main website input raw data, comprise earthing mode, the out-of-limit definite value of electric current of setting, the temperature beyond limit definite value of each shaft tower section OPGW line, the general out-of-limit definite value of electric current is 30-50kA, temperature beyond limit definite value is 200 DEG C;
(2) terminal detects current value and the temperature on each shaft tower section OPGW line in real time, and by collector, described current value and temperature data uploading is arrived to main website.
(3) if the current value on the OPGW line detecting has exceeded the electric current out-of-limit threshold value of setting, or the temperature gathering exceeded temperature beyond limit definite value, and main website sends alerting signal, otherwise continues to carry out;
(4) if OPGW line is by tower ground connection, execution step (5)-(7); If OPGW line is single-point grounding, execution step (8)-(10);
(5) judge according to the line protective devices of transformer station whether transmission line of electricity is short-circuited;
(6) when transmission line of electricity is during in normal operation, judge whether reliable ground of OPGW line according to the current data on responded to OPGW line, if transmission line of electricity normally flows through load current, and induction current on OPGW line is less than K* induction current calculated value (K gets 0.5-1.0), judge that OPGW line does not have reliable ground and sends alerting signal, induction current calculated value wherein refers in the time that transmission line of electricity normally flows through load current, the induction current theoretical value on the OGW line of calculating gained;
(7) in the time of transmission line of electricity short circuit, judge whether reliable ground under short-circuit conditions of OPGW line according to the short-circuit current data that flow through on OPGW line, if transmission line of electricity short circuit current flow, and electric current on OPGW line is less than K* the first short-circuit current calculated value (K gets 0.5-1.0), think that OPGW line does not have reliable ground and sends warning, the first short-circuit current calculated value wherein refers to when transmission line of electricity short circuit current flow, and that calculates flows through the electric current theoretical value on OPGW line;
(8) judge according to the line protective devices of transformer station whether transmission line of electricity is short-circuited;
(9) when transmission line of electricity is during in normal operation, judge the whether single-point grounding of OPGW line according to the current data on responded to OPGW line, if transmission line of electricity normally flows through load current, and induction current on OPGW line is greater than 10A, judges that OPGW line does not have single-point grounding and sends alerting signal;
(10), in the time of transmission line of electricity short circuit, judge whether reliable ground under short-circuit conditions of OPGW line according to the short-circuit current data that flow through on OPGW line.If transmission line of electricity short circuit current flow, and electric current on OPGW line is less than K* the second short-circuit current calculated value (K gets 0.5-1.0), think that OPGW line does not have reliable ground and sends warning, the second short-circuit current calculated value wherein refers to when transmission line of electricity short circuit current flow, and that calculates flows through the electric current theoretical value on OPGW line.
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