CN104596583A - OPPC on-line monitoring system for monitoring operating condition of power transmission line - Google Patents
OPPC on-line monitoring system for monitoring operating condition of power transmission line Download PDFInfo
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Abstract
The invention relates to an OPPC on-line monitoring system for monitoring the operating condition of a power transmission line. The OPPC on-line monitoring system comprises the power transmission line formed by a novel OPPC, a field monitoring device and a remote monitoring device, wherein tight tube optical fibers are arranged in a first optical unit of the novel OPPC, and loose tube optical fibers are arranged in a second optical unit of the novel OPPC; the field monitoring device comprises a monitoring module and a safety isolation module; one end of the line is connected to an optical fiber distribution frame through a splice closure and a guiding optical cable, and then is connected to the field monitoring device, and the other end of the line is connected to the optical fiber distribution frame through the splice closure and the guiding optical cable, and conducts fiber jumping loopback on the optical fiber distribution frame; the remote monitoring device comprises a monitoring management module, a data center module and a data analysis module. The OPPC on-line monitoring system for monitoring the operating condition of the power transmission line achieves real-time continuous monitoring of the temperature, the current-carrying capacity and the stress of the OPPC line in the whole process, provides powerful technical support for operation and overhauling of the line, and guarantees safe operation of a power grid.
Description
Technical field
The present invention relates to the monitoring of optical phase conductor, particularly a kind of OPPC online monitoring system for monitoring transmission line of electricity running status.
Background technology
Along with the fast development of national economy, energy use amount sharply increases, and particularly increases substantially the demand of electric power resource, adjustment and optimization electric power resource, realizes the intelligent the only way which must be passed that will be power industry and realize transition of electrical network.Intelligent grid is by the sensing amount measuring technique of advanced person, ICT (information and communication technology), analysis decision technology and automatic control technology and electricity power technology and the integrated and new-modernization electrical network formed of electrical network infrastructure height.Power transmission network intellectuality is the key component of intelligent grid.China is vast in territory, geographical environment difference obvious, and transmission line of electricity distribution range is very big, service condition is complicated, is subject to natural environment influence and outside destroy, brings great difficulty to the maintenance work of patrolling and examining of transmission line of electricity.
In recent years, what propose both at home and abroad will be used for overhead transmission line on-line monitoring field at optical sensor system, realize the parameter measurements such as conductor temperature, wire strain, ice covering thickness, conducting wire sag.The patent such as patent of invention " power transmission line sag on-line monitoring system " (application number 200910089445.0), " fiber grating monitoring system for transmission line of electricity " (application number 200910237747.8) proposes and utilizes fiber grating sensing technology to realize the icing of transmission line of electricity, the phenomenon on-line monitoring such as to wave.In the method, need to design special fiber grating line tension test sensor, pulling force sensor is installed between insulator chain and link plate and (replaces original globe joint), realize the strain of hitch point, dip angle parameter is measured.But the method has only monitored strain, the obliquity information of hitch point, belongs to point measurement, and Monitoring Data point is few.Patent of invention " electricity transmission line monitoring method and device " (grant number CN101614602B) discloses a kind of Fibre Optical Sensor that utilizes and carries out the method and apparatus of Real-Time Monitoring to transmission line of electricity, this method proposing optical fiber is sensor, also be signal transmssion line, breach the limitation of point measurement, achieve transmission line of electricity complete monitoring; But the method needs additionally to arrange Fibre Optical Sensor along transmission line of electricity, and requires and transmission line of electricity close contact, this is difficult to realize on actual work transmission line.Utility model patent " the online comprehensive monitor system of extra high voltage network " (grant number CN202757987U) discloses a kind of intelligent comprehensive monitoring system comprising distribution type fiber-optic In-Line Temperature Measure System, the sensing optic cable of distribution type fiber-optic In-Line Temperature Measure System is implanted in power cable, can the dynamic current-carrying capacity of Real-Time Monitoring conductor temperature and cable.But distribution type fiber-optic In-Line Temperature Measure System can only utilize sensor fibre to realize the measurement of temperature of electric transmission line in this patent, the measurement of transmission line of electricity strain can not be realized, and the size of strain for transmission line of electricity sag, wave, the state research such as icing is significant.
Summary of the invention
The object of the present invention is to provide a kind of OPPC online monitoring system for monitoring transmission line of electricity running status, to realize the running state real-time monitoring to transmission line of electricity.
For achieving the above object, technical scheme of the present invention is: a kind of OPPC online monitoring system for monitoring transmission line of electricity running status, is characterized in that, comprising: OPPC, local supervising and measuring equipment and long-distance monitorng device; Described local supervising and measuring equipment is provided with: field monitoring module and Secure isolation module; Described field monitoring module is used for the field monitoring data of transmission line of electricity described in Real-time Obtaining; Described field monitoring module is connected to described long-distance monitorng device through described Secure isolation module by telecommunication; Described long-distance monitorng device comprises: monitoring management module, data center module and data analysis module; Field monitoring data described in described long-distance monitorng device real-time reception, row relax of going forward side by side, storage and analysis; Described monitoring management module is connected to described data analysis module through described data center module.
In an embodiment of the present invention, described OPPC adopts New O PPC; Described New O PPC comprises the first smooth unit and the second smooth unit; Be arranged on the central core of described New O PPC in described first smooth unit, and be provided with the tight tube fiber for transmission line of electricity strain monitoring in described first smooth unit; The stranded layer of described New O PPC is arranged in described second smooth unit, and the loose tube fiber be provided with in described second smooth unit for temperature of electric transmission line monitoring and to have at least long more than a fibre core be 0.5%-0.8%.
In an embodiment of the present invention, aluminum-clad steel wire and (or) aluminum steel is also provided with in described New O PPC; Described aluminum-clad steel wire and (or) aluminum steel are arranged at the stranded layer of described New O PPC.
In an embodiment of the present invention, described field monitoring module comprises scene temperature monitoring and strain monitoring module, environment temperature monitoring modular and air monitoring module.
In an embodiment of the present invention, described local supervising and measuring equipment also comprises a temperature monitoring module and strain monitoring module, and this temperature monitoring module and strain monitoring module calculate the temperature of described OPPC in the following way:
, calculate the strain of described OPPC in the following way:
, wherein, L is the distance of light unit to monitoring device,
be the first smooth unit brillouin frequency Spectral structure information,
be the second smooth unit brillouin frequency Spectral structure information,
be the variable quantity of the first smooth cell temperature,
be the variable quantity of the second smooth cell temperature,
be the variable quantity of the first smooth unit strain,
be the variable quantity of the second smooth unit strain,
be the first smooth unit Brillouin shift temperature coefficient,
be the second smooth unit Brillouin shift temperature coefficient,
be the first smooth unit Brillouin shift coefficient of strain,
it is the second smooth unit Brillouin shift coefficient of strain; And described first smooth unit Brillouin shift temperature coefficient
, described second smooth unit Brillouin shift temperature coefficient
, the described first smooth unit Brillouin shift coefficient of strain
and the described second smooth unit Brillouin shift coefficient of strain
obtain by testing tight tube fiber and loose tube fiber in the first smooth unit in described New O PPC, the second smooth unit.
In an embodiment of the present invention, described monitoring management module comprises: variable administration module, graphic monitoring module, alarm module, data memory module and authority management module; Described variable administration module is for managing sensing variable, linear variable, current-carrying capacity variable and controllable variable; Described graphic monitoring module be used in described variable administration module to the display of dependent variable and field monitoring data and monitoring; Described alarm module receives the warning message that described distributed sensor is uploaded, and is completed the display of the particular location of warning by described graphic monitoring module; Described authority management module is used for managing the rights of using of user; Described data center module comprises: data memory module and data service module; Described data analysis module comprises: distributed data playback and overlap analysis mode, distributed data historical analysis module, distributed data stability analysis module.
Further, a kind of OPPC on-line monitoring method for monitoring transmission line of electricity running status being also provided, it is characterized in that, comprise the steps:
S1: the terminal tower between Liang Ge transformer station sets up the circuit be made up of New O PPC, in a transformer substation communication machine room, the first fibre distribution frame and local supervising and measuring equipment are set wherein, in another transformer substation communication machine room, the second fibre distribution frame is set, corresponding transformer substation communication machine room is introduced respectively by guiding optical cable in the two ends of described circuit, and described guiding optical cable adopts and the ADSS of the first smooth unit in described New O PPC and the second smooth unit same quantity optical fiber of the same type or ordinary optical cable;
S2: obtain the tight tube fiber in described circuit and two guiding optical cable corresponding ports and loose tube fiber respectively; By described circuit one end and the tight tube fiber wherein in a guiding optical cable one end and loose tube fiber respectively welding, and the tight tube fiber after welding and loose tube fiber coiling are fixed in a splice tray, and this splice tray is arranged on a terminal tower; By the tight tube fiber in the described circuit other end and another guiding optical cable one end and loose tube fiber welding respectively, and the tight tube fiber after welding and loose tube fiber coiling are fixed in another splice tray, and this splice tray is arranged on another terminal tower; Respectively two are guided the corresponding Cheng Duan of optical cable other ends difference in described first fibre distribution frame and described second fibre distribution frame; With jumping fiber, described first fibre distribution frame is connected with described local supervising and measuring equipment, holds the tight tube fiber on described second fibre distribution frame to be connected with loose tube fiber, to form a monitoring circuit one-tenth with jumping fiber; Described splice tray is the good special splice tray of the anti-high pressure of a kind of energy, insulating property
S3: lay environment temperature monitoring modular and air monitoring module on described circuit;
S4: start the field monitoring module in described local supervising and measuring equipment, carries out real-time omnidistance follow-on test to fiber optic temperature in described circuit and strain, and automatically records and preserve one group of temperature and strain value gathered second every T; The environment temperature of record and preservation one group collection automatically every T hour and air speed value;
S5: field monitoring modules acquiring data delivers to long-distance monitorng device through Secure isolation module by telecommunication, described long-distance monitorng device obtains the current-carrying capacity in described circuit according to field measurement data, current-carrying capacity mathematics model of stable state and current-carrying capacity transient mathematical model, and analyzes described circuit stressing conditions.
In an embodiment of the present invention, in described step S5, described current-carrying capacity mathematics model of stable state is:
; Described current-carrying capacity transient mathematical model is:
; Wherein,
for current-carrying capacity,
for heat loss through convection power,
for heat loss through radiation power,
for solar radiation Endothermic power,
for conductive line surfaces temperature is
time the AC resistance of conductor, m is the quality of unit length wire,
for the specific heat capacity of wire.
A kind of OPPC online monitoring system for monitoring transmission line of electricity running status proposed by the invention, by adopting New O PPC structure, loose tube fiber and tight tube fiber are set in this New O PPC, adopt Brillouin scattering distributed monitoring device, achieve the object of omnidistance monitoring electric aerial optical cable temperature and strain continuously.This monitoring method achieves length and is not more than the omnidistance Real-Time Monitoring of 75km transmission line of electricity, and line length sampling interval reaches 0.1 ~ 1m; One group of temperature and strain data is measured every 20S, and record and preservation automatically, temperature accuracy reaches
° C, temperature resolution is 0.1 ° of C; Strain precision reaches
, strain resolution is
.And develop status monitoring and analyzing and diagnosing integrated software, achieve the omnidistance Real-Time Monitoring that transmission line status runs, without measuring blind area, without the need to extra placement sensor, construct simple and convenient, achieve line facility to be changed to Mode of condition-oriented overhaul by prophylactic repair, and by this transmission line online monitoring system, technician can Timeliness coverage line security hidden danger, analyze looking up the fault reason, rapid rush-repair is carried out in organizational strength, improve line security, improve traditional overhaul management mode, facilitate operation maintenance, effectively save manpower and materials, improve normal operation level, ensure that transmission line of electricity safe and stable operation, this online monitoring system also meets intelligent grid developing direction simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the OPPC online monitoring system of monitoring transmission line of electricity running status in the present invention.
Fig. 2 is New O PPC structural drawing in the present invention.
Fig. 3 is the connection diagram that the present invention monitors the OPPC online monitoring system of transmission line of electricity running status.
Fig. 4 is medium-long range supervising device composition diagram of the present invention.
Fig. 5 is that medium-long range supervising device of the present invention realizes OPPC on-line monitoring schematic diagram.
Fig. 6 monitors main interface schematic diagram in medium-long range supervising device of the present invention.
Fig. 7 is the connection diagram of local supervising and measuring equipment in the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
The invention provides a kind of OPPC online monitoring system for monitoring transmission line of electricity running status, it is characterized in that, as shown in Figure 1, comprise: OPPC, local supervising and measuring equipment and long-distance monitorng device; Described OPPC adopts New O PPC.
In the present embodiment, as shown in Figure 2, described New O PPC comprises the first smooth unit 1 and the second smooth unit 2; Be arranged on the central core of described OPPC transmission line of electricity in described first smooth unit 1, and be provided with the 2 core tight tube fibers 11 for transmission line of electricity strain monitoring in described first smooth unit 1, and the remaining length of this tight tube fiber 11 is zero, core diameter is 0.9mm; Further, described first smooth unit 1 also comprises the stainless-steel tube for placing described tight tube fiber 11, and this stainless-steel tube diameter is 2.7mm; In addition, described first smooth unit 1 is also filled with ointment.
Be arranged on the stranded layer of described New O PPC in described second smooth unit 2, and be provided with the 12 core loose tube fibers 21 for temperature of electric transmission line monitoring in described second smooth unit 2, and this loose tube fiber 21 is 0.5% ~ 0.8% with remaining length, core diameter is 250 microns; Further, described second smooth unit 2 also comprises the stainless-steel tube for placing described loose tube fiber 21, and this stainless-steel tube diameter is 2.7mm; In addition, also all ointment is filled with in described second smooth unit 2.
In the present embodiment, described stranded layer is also provided with aluminum-clad steel wire 3, comprises 5 aluminum-clad steel wires altogether, and the diameter of every root aluminum-clad steel wire is 2.7mm.Described aluminum steel 4 is stranded in the periphery of described stranded layer; In the present embodiment, stranded in the periphery of described stranded layer have two-layer diameter to be the aluminum steel of 3.45mm, and wherein, ground floor is stranded 10 aluminum steels, and the second layer is stranded 16 aluminum steels, and the diameter of whole optical phase conductor is 21.90mm.In addition, in the present embodiment, the aluminum-clad steel wire 3 being arranged on stranded layer can adopt aluminum steel.
Described local supervising and measuring equipment is provided with: field monitoring module and Secure isolation module; Described field monitoring module is used for the field monitoring data of transmission line of electricity described in Real-time Obtaining.Described field monitoring module is connected to described long-distance monitorng device through described Secure isolation module by telecommunication; Further, for meeting the needs of remote monitoring and the exploitation of other operation system, real time monitoring data transfer to long-distance monitorng device by Internet network.As shown in Figure 3, local supervising and measuring equipment passes through Ethernet access long-distance monitorng device through Secure isolation module, with Real-Time Monitoring OPPC temperature of electric transmission line and current-carrying capacity, strain and the change of stress, facilitate sharing of circuit real time temperature and strain monitoring data and other application system, the systems such as such as overhead transmission line integrated monitoring platform, sag analysis, dynamic compatibilization, improve the dirigibility of deployment, in addition, also make the backup of temperature strain Monitoring Data and share more convenient.In the present embodiment, Secure isolation module adopts fire wall, and sets strict access control policy, to guarantee that field monitoring data upload is to the security in long-distance monitorng device process.
In the present embodiment, described field monitoring module comprises temperature monitoring and strain monitoring module, environment temperature monitoring modular and air monitoring module.
In the present embodiment, temperature monitoring module and strain monitoring module adopt a Brillouin optical time domain analysis instrument.Described Brillouin optical time domain analysis instrument has two optical ports, and the first optical port has transmission continuous laser semiotic function, and the second optical port, for sending pulsed laser signal, has the brillouin frequency spectrum signal function receiving feedback simultaneously; After Brillouin optical time domain analysis instrument receives the inner first smooth unit of electric aerial optical cable, the second smooth unit inner fiber scattered signal, calculate the omnidistance distributed intelligence of Brillouin's frequency spectrum of the first smooth unit inner fiber in real time
distributed intelligence omnidistance with Brillouin's frequency spectrum of the second smooth unit inner fiber
,
lfor light unit is to the distance of Brillouin optical time domain analysis instrument.First smooth unit, Brillouin's frequency spectrum of the second smooth unit inner fiber and the corresponding relation of temperature and strain are designated as following formula respectively:
In formula
,
be respectively the Brillouin shift temperature coefficient of the first smooth unit, the second smooth unit,
,
be respectively the Brillouin shift coefficient of strain of the first smooth unit, the second smooth unit.
,
be respectively the variable quantity of the first smooth unit, the second smooth cell temperature,
,
be respectively the variable quantity of the first smooth unit, the second smooth unit strain.
In aerial optical cable same position, the temperature variation that the first smooth unit, the second smooth unit inner fiber bear is identical, namely
; And the first smooth unit and second unit are all in the inside of electric aerial optical cable, its outside is multilayer aluminum twisted wire, and pole line xsect can be approximately an equally distributed thermal field, i.e. the temperature variation of the first smooth unit, the second smooth unit inner fiber
,
the temperature variation of aerial optical cable can be equivalent to, in addition because the second smooth unit inside is the loose tube fiber that remaining length is larger, even if when there is strain and tensile deformation occur in aerial optical cable, also loose tube fiber can't be made stressed, therefore the loose tube fiber in the second smooth unit is only relevant with the temperature of overhead transmission line, and irrelevant with strain, namely
be always 0.In through type (2), the Brillouin shift of the second smooth unit draws the first smooth unit, the temperature variation of the second smooth unit same position is:
First smooth unit internal optical fiber is do not have remaining long tight tube fiber, and be positioned at aerial optical cable center, do not exist stranded remaining long, the strain therefore during electric aerial optical cable generation deformation will be directly passed to the tight tube fiber in first module, the strain variation of the tight tube fiber in the first smooth unit
the strain variation of aerial optical cable can be equivalent to.Optical fiber Brillouin frequency spectrum in first smooth unit
with temperature
and strain
be correlated with simultaneously, formula (3) brought in formula (1) and draw the first smooth unit strain variation amount
for:
First smooth unit, the second smooth unit Brillouin shift temperature coefficient
,
and the first smooth unit, the second smooth unit Brillouin shift coefficient of strain
,
can be drawn by demarcation or empirical value, therefore through type (3) and formula (4) can obtain the whole process distribution of electric aerial optical cable temperature and strain.Further, the first smooth unit, the second smooth unit Brillouin shift temperature coefficient
,
and the first smooth unit, the second smooth unit Brillouin shift coefficient of strain
,
obtain by testing tight tube fiber and loose tube fiber in the first smooth unit in described New O PPC, the second smooth unit.
Further, as shown in Figure 4, described long-distance monitorng device comprises: monitoring management module, data center module and data analysis module; Described monitoring management module comprises: variable administration module, graphic monitoring module, alarm module, data memory module and authority management module; Described monitoring management module is connected to described data analysis module through described data center module, and described monitoring management module, data center module and data analysis module is all deployed on corresponding server host; Field monitoring data described in described long-distance monitorng device real-time reception.
In the present embodiment, for the convenience of the user to the definition of sensing data, increase " variable " concept, the variable of definition can calculate the variable made new advances by combination algorithm.System definition four kinds of algorithmic variables, comprise sensing variable, linear variable, current-carrying capacity variable, controllable variable.Described variable administration module is for managing sensing variable, linear variable, current-carrying capacity variable and controllable variable.Sensing variable can take out certain a bit or the maximal value of a certain section from the array of sensing data, and the type variable is most basic variable, and its dependent variable is all recalculate based on the type variable.Linear variable is applicable to the wavelength sensitive value from grating, and computing is to temperature and strain.Current-carrying capacity variable is drawn by computings such as the temperature inputted, meteorology, cable data, and controllable variable by the value of its correspondence of edit, can may be used for other variable parameter, conveniently manually adjusts.
In the present embodiment, described graphic monitoring administration module be used in described variable administration module to the display of dependent variable and raw sensory array and monitoring; Two kinds of graphic display modes are defined, based on the display of variable and the display of raw sensory array in monitoring module.The mode of variable shows in note control mode, defines display position, display size and background color etc.The display of raw sensory array take color as the size of sensed values, with the colored curve display of a physical space trend.
Described alarm module receives the warning message that described distributed sensor is uploaded, and is completed the display of the particular location of warning by described graphic monitoring module; Alarm module receives the warning message of BOTDA, and display alarm position on the curve of physical space trend, in this process, can be arranged the threshold value of variable, and indicate with different background colours by variable control.
Described data memory module is used for storing described Monitoring Data, and all variablees can be saved in database at certain interval, so that historical analysis uses.
Described authority management module is used for managing the rights of using of user, facilitates the use of control software design function.
In the present embodiment, described data center module comprises: Distributed Storage module and data service module.Distributed Storage module can connect the data of multiple stage local supervising and measuring equipment test, and is stored with " device address-> passage name->-> on days data type " path by the sensing data uploaded.In data service module, the data-query interfaces that the service routine of distributed data through developing provides, linking parsing software.
In the present embodiment, described data analysis module comprises: distributed data playback and overlap analysis mode, distributed data historical analysis module, distributed data stability analysis module; Distributed data playback and overlap analysis mode, and can Continuous Play for inquiring about the data of section sometime, check data situation, provide single curve and Overlapping display two kinds of modes.Distributed data historical analysis module is for inquiring about section, a certain position or the maximal value of a certain section and the situation of change of mean value sometime.Distributed data stability analysis module for inquiring about a period of time, the data of all positions maximal value in time and mean value, assessment data degree of stability in time.
In the present embodiment, as shown in Figure 5, described long-distance monitorng device is carried out large data processing, storage by comprehensive management software of analyzing and is comprehensively analyzed, generate the path monitoring data such as OPPC temperature, strain, current-carrying capacity, and shown by graphic monitoring module, monitor the signal of main interface as shown in Figure 6, achieve the omnidistance comprehensively monitoring continuously of transmission line of electricity.
Further, a kind of OPPC online monitoring system for monitoring transmission line of electricity running status proposed by the invention is more understood in order to allow those skilled in the art, as shown in Figure 7, a kind of OPPC on-line monitoring method for monitoring transmission line of electricity running status being also provided, comprising the steps:
S1: the terminal tower between Liang Ge transformer station sets up the circuit be made up of New O PPC, in a transformer substation communication machine room, the first fibre distribution frame and local supervising and measuring equipment are set wherein, in another transformer substation communication machine room, the second fibre distribution frame is set, corresponding transformer substation communication machine room is introduced respectively by guiding optical cable in the two ends of described circuit, and described guiding optical cable adopts and the ADSS of the first smooth unit in described New O PPC and the second smooth unit same quantity optical fiber of the same type or ordinary optical cable;
S2: obtain the tight tube fiber in described circuit and two guiding optical cable corresponding ports and loose tube fiber respectively; By described circuit one end and the tight tube fiber wherein in a guiding optical cable one end and loose tube fiber respectively welding, and the tight tube fiber after welding and loose tube fiber coiling are fixed in a splice tray, and this splice tray is arranged on a terminal tower; By the tight tube fiber in the described circuit other end and another guiding optical cable one end and loose tube fiber welding respectively, and the tight tube fiber after welding and loose tube fiber coiling are fixed in another splice tray, and this splice tray is arranged on another terminal tower; Respectively two are guided the corresponding Cheng Duan of optical cable other ends difference in described first fibre distribution frame and described second fibre distribution frame; With jumping fiber, described first fibre distribution frame is connected with described local supervising and measuring equipment, holds the tight tube fiber on described second fibre distribution frame to be connected with loose tube fiber, to form a monitoring circuit one-tenth with jumping fiber; Described splice tray is the good special splice tray of the anti-high pressure of a kind of energy, insulating property
S3: lay environment temperature monitoring modular and air monitoring module on described circuit;
S4: start the field monitoring module in described local supervising and measuring equipment, carries out real-time omnidistance follow-on test to fiber optic temperature in described circuit and strain, and automatically records and preserve one group of temperature and strain value gathered second every T; The environment temperature of record and preservation one group collection automatically every T hour and air speed value;
S5: field monitoring modules acquiring data delivers to long-distance monitorng device through Secure isolation module by telecommunication, described long-distance monitorng device obtains the current-carrying capacity in described circuit according to field measurement data, current-carrying capacity mathematics model of stable state and current-carrying capacity transient mathematical model, and analyzes described circuit stressing conditions.
In the present embodiment, in described step S5, described current-carrying capacity mathematics model of stable state is:
; Described current-carrying capacity transient mathematical model is:
; Wherein,
for current-carrying capacity,
for heat loss through convection power,
for heat loss through radiation power,
for solar radiation Endothermic power,
for conductive line surfaces temperature is
time the AC resistance of conductor, m is the quality of unit length wire,
for the specific heat capacity of wire.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (7)
1., for monitoring an OPPC online monitoring system for transmission line of electricity running status, it is characterized in that, comprise: OPPC, local supervising and measuring equipment and long-distance monitorng device; Described local supervising and measuring equipment is provided with: field monitoring module and Secure isolation module; Described field monitoring module is used for the field monitoring data of transmission line of electricity described in Real-time Obtaining; Described field monitoring module is connected to described long-distance monitorng device through described Secure isolation module by telecommunication; Described long-distance monitorng device comprises: monitoring management module, data center module and data analysis module; Field monitoring data described in described long-distance monitorng device real-time reception, row relax of going forward side by side, storage and analysis; Described monitoring management module is connected to described data analysis module through described data center module.
2. a kind of OPPC online monitoring system for monitoring transmission line of electricity running status according to claim 1, is characterized in that: described OPPC adopts New O PPC; Described New O PPC comprises the first smooth unit and the second smooth unit; Be arranged on the central core of described New O PPC in described first smooth unit, and be provided with the tight tube fiber for transmission line of electricity strain monitoring in described first smooth unit; The stranded layer of described New O PPC is arranged in described second smooth unit, and the loose tube fiber be provided with in described second smooth unit for temperature of electric transmission line monitoring and to have at least long more than a fibre core be 0.5%-0.8%.
3. a kind of OPPC online monitoring system for monitoring transmission line of electricity running status according to claim 2, is characterized in that: be also provided with aluminum-clad steel wire and (or) aluminum steel in described New O PPC; Described aluminum-clad steel wire and (or) aluminum steel are arranged at the stranded layer of described New O PPC.
4. a kind of OPPC online monitoring system for monitoring transmission line of electricity running status according to claim 1, it is characterized in that: described local supervising and measuring equipment also comprises a temperature monitoring module and strain monitoring module, its this temperature monitoring module and strain monitoring module calculate the temperature of described OPPC in the following way:
, calculate the strain of described OPPC in the following way:
, wherein, L is the distance of light unit to monitoring device,
be the first smooth unit brillouin frequency Spectral structure information,
be the second smooth unit brillouin frequency Spectral structure information,
be the variable quantity of the first smooth cell temperature,
be the variable quantity of the second smooth cell temperature,
be the variable quantity of the first smooth unit strain,
be the variable quantity of the second smooth unit strain,
be the first smooth unit Brillouin shift temperature coefficient,
be the second smooth unit Brillouin shift temperature coefficient,
be the first smooth unit Brillouin shift coefficient of strain,
it is the second smooth unit Brillouin shift coefficient of strain; And described first smooth unit Brillouin shift temperature coefficient
, described second smooth unit Brillouin shift temperature coefficient
, the described first smooth unit Brillouin shift coefficient of strain
and the described second smooth unit Brillouin shift coefficient of strain
obtain by testing tight tube fiber and loose tube fiber in the first smooth unit in described New O PPC, the second smooth unit.
5. a kind of OPPC online monitoring system for monitoring transmission line of electricity running status according to claim 1, is characterized in that: described monitoring management module comprises: variable administration module, graphic monitoring module, alarm module, data memory module and authority management module; Described variable administration module is for managing sensing variable, linear variable, current-carrying capacity variable and controllable variable; Described graphic monitoring module be used in described variable administration module to the display of dependent variable and field monitoring data and monitoring; Described alarm module receives the warning message that described distributed sensor is uploaded, and is completed the display of the particular location of warning by described graphic monitoring module; Described authority management module is used for managing the rights of using of user; Described data center module comprises: data memory module and data service module; Described data analysis module comprises: distributed data playback and overlap analysis mode, distributed data historical analysis module, distributed data stability analysis module.
6., based on the OPPC on-line monitoring method for monitoring transmission line of electricity running status of a kind of OPPC online monitoring system for monitoring transmission line of electricity running status described in any one of claim 1,2,3 or 5, it is characterized in that, comprise the steps:
S1: the terminal tower between Liang Ge transformer station sets up the circuit be made up of New O PPC, in a transformer substation communication machine room, the first fibre distribution frame and local supervising and measuring equipment are set wherein, in another transformer substation communication machine room, the second fibre distribution frame is set, corresponding transformer substation communication machine room is introduced respectively by guiding optical cable in the two ends of described circuit, and described guiding optical cable adopts and the ADSS of the first smooth unit in described New O PPC and the second smooth unit same quantity optical fiber of the same type or ordinary optical cable;
S2: obtain the tight tube fiber in described circuit and two guiding optical cable corresponding ports and loose tube fiber respectively; By described circuit one end and the tight tube fiber wherein in a guiding optical cable one end and loose tube fiber respectively welding, and the tight tube fiber after welding and loose tube fiber coiling are fixed in a splice tray, and this splice tray is arranged on a terminal tower; By the tight tube fiber in the described circuit other end and another guiding optical cable one end and loose tube fiber welding respectively, and the tight tube fiber after welding and loose tube fiber coiling are fixed in another splice tray, and this splice tray is arranged on another terminal tower; Respectively two are guided the corresponding Cheng Duan of optical cable other ends difference in described first fibre distribution frame and described second fibre distribution frame; With jumping fiber, described first fibre distribution frame is connected with described local supervising and measuring equipment, holds the tight tube fiber on described second fibre distribution frame to be connected with loose tube fiber, to form a monitoring circuit one-tenth with jumping fiber; Described splice tray is the good special splice tray of the anti-high pressure of a kind of energy, insulating property
S3: lay environment temperature monitoring modular and air monitoring module on described circuit;
S4: start the field monitoring module in described local supervising and measuring equipment, carries out real-time omnidistance follow-on test to fiber optic temperature in described circuit and strain, and automatically records and preserve one group of temperature and strain value gathered second every T; The environment temperature of record and preservation one group collection automatically every T hour and air speed value;
S5: field monitoring modules acquiring data delivers to long-distance monitorng device through Secure isolation module by telecommunication, described long-distance monitorng device obtains the current-carrying capacity in described circuit according to field measurement data, current-carrying capacity mathematics model of stable state and current-carrying capacity transient mathematical model, and analyzes described circuit stressing conditions.
7. a kind of OPPC online monitoring system for monitoring transmission line of electricity running status according to claim 12, it is characterized in that: in described step S5, described current-carrying capacity mathematics model of stable state is:
; Described current-carrying capacity transient mathematical model is:
; Wherein,
for current-carrying capacity,
for heat loss through convection power,
for heat loss through radiation power,
for solar radiation Endothermic power,
for conductive line surfaces temperature is
time the AC resistance of conductor, m is the quality of unit length wire,
for the specific heat capacity of wire.
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