CN106199126A - A kind of highly reliable low time delay all-fiber current transformator - Google Patents
A kind of highly reliable low time delay all-fiber current transformator Download PDFInfo
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- CN106199126A CN106199126A CN201610780521.2A CN201610780521A CN106199126A CN 106199126 A CN106199126 A CN 106199126A CN 201610780521 A CN201610780521 A CN 201610780521A CN 106199126 A CN106199126 A CN 106199126A
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- 238000005070 sampling Methods 0.000 claims description 21
- 230000003750 conditioning effect Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
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- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical group C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 4
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
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Abstract
The present invention relates to a kind of highly reliable low time delay all-fiber current transformator, including modulating and demodulating signal unit, light path sensing unit, communication processing unit, described communication processing unit comprises external sync module, the network communication module connected with main control module.In the present invention, all-fiber current transformator possesses network communication function, it is not necessary to combining unit forwards data, reduces network transfer delay, improves the reliability of system；Possess synchronous signal receiver function, energy real-time reception outer synchronous signal, it is achieved data synchronization between devices；Possess data synchronization processing function, it is possible to achieve multiple synchronization processing mode, adapt to different application scenarios.Possess the ability that warning information is transmitted directly to backstage, facilitate transmitting fault information.Possess Multi-netmouth expanded function, multi-path network port transmitting-receiving can be carried out simultaneously.
Description
Technical field
The present invention relates to the optical fiber current mutual inductor technology in power system automation technology field, can particularly to a kind of height
By low time delay all-fiber current transformator.
Background technology
All-fiber current transformator non-sensitive part uses all-fiber devices, has good insulating, electromagnetism interference performance is good,
Measurement scope is big, response band width, can measure alternating current-direct current, the advantage such as convenient for installation and maintenance, is becoming electronic current mutual inductance
The trend of device development.
All-fiber current transformator is all connected with background devices by combining unit at present, and its data need merging list
Unit carries out synchronization process, is then forwarded in background devices according still further to standard agreement.Owing to there is combining unit link, a side
Face, owing to increasing equipment, reduces the reliability of system；On the other hand, the process of combining unit brings 750us's～2000us
Time delay, the operation promptness of background system will be brought considerable influence by this time delay.
Summary of the invention
For the problems referred to above, the present invention provides a kind of can improve the reliability of all-fiber current transformator, can reduce again
Its data are transferred to the all-fiber current transformator of background devices time delay.
To this end, the present invention is by the following technical solutions: a kind of highly reliable low time delay all-fiber current transformator, including signal
Modem module and light path sensing unit, described modulating and demodulating signal unit includes that photodetector, sampled signal nurse one's health mould
Block, analog-to-digital conversion module, main control module, D/A converter module, feedback conditioning module, gain control module；Described light path is sensitive
Unit includes light source driver module, light source, bonder, the polarizer, manipulator, ring retard, sensing ring；Also include Communication processing list
Unit, described communication processing unit comprises external sync module, the network communication module connected with main control module.
The present invention increases network communication module, increases International Power communication standard agreement and supports, it is achieved data directly export
To background devices, reduce propagation delay time；Increase external sync time adjustment function, it is possible to accomplish to transmit with external equipment real-time synchronization.
Save combining unit and reduce data transmission delay, improve system reliability.
Described network communication module uses the Ethernet transmission data as transmission medium with optical fiber or cable, possesses many
In 1 road network interface, it is extended to multichannel (more than or equal to 2 tunnels) network interface.Network communication module uses standardization communication association
View, includes but not limited to that signal is adjusted by IEC61850 standard agreement, DL/T860 standard agreement, ICP/IP protocol, udp protocol etc.
The result of demodulating unit processed is transferred to background devices, possesses special communication protocol extended capability.Network communication module can be by
All-fiber current transformator sample values is sent to backstage by network interface, also can ALM information be connect by network
Mouth is sent to backstage.This sample values and warning information can be sent by different network interfaces, it is also possible to sent out by identical network interface
Send.The function of different network interfaces can be configured by backstage.Network interface transmission medium can be optical fiber or cable.
External sync module includes signal source control module and is connected to the gps signal solution of signal source control module input
Signal decoder module, local synchronization signal generator module, pulse per second (PPS) solution during code module, Big Dipper signal decoder module, Ethernet pair
Code module, IRIG-B code decoder module；Signal source control module outfan welding system sampling pulse generation module, systematic sampling arteries and veins
Rush generation module to export to system data synchronization processing module.
Described local synchronization signal generation module is used for producing local synchronization signal, accesses not having outer synchronous signal
Time, system will use local synchronization signal.
Described signal source control module is used for selecting outside source, configures according to backstage, accurately selects the outside needed
Source of synchronising signal or internal signal sources.
Described systematic sampling pulse generation module, for synchronizing signal is converted to system synchronization signal, sets according to system
Put, synchronizing signal can be divided into 4000Hz, 8000Hz, 12800Hz isopulse signal, it is also possible to configure according to backstage, generate
The sampling pulse of remaining frequency, is used for the sampling to system data and synchronization.
Described system data synchronization processing module, including but not limited to following three kinds of processing modes: one is synchronized sampling side
Formula, i.e. systematic sampling value output time and sampling pulse Complete Synchronization, when sampling pulse arrives, produce sampled signal immediately.
Two is that sampled value is asynchronous with lock-out pulse, utilizes interpolation method, sample values is interpolated into sampling pulse and arrives the moment.Three
It is increase pre-sampling function on the basis of mode one, is calculated sampling by system in real time and require time for, by sampling in advance, really
When insurance system sampling pulse arrives, sampled data is the most just ready to, and reaches the effect simultaneously exported.
Described communication processing unit includes combining unit communication module.After improvement, optical fiber current mutual inductor has simultaneously
Standby network communication module, combining unit communication module, module during external sync pair, it is also possible to only possess network communication module with outer
Module during portion's synchronization pair.
Described combining unit communication module uses the FT3 agreement output of power industry standard, it is achieved with existing combining unit
Compatibility.Support on hardware to be extended to remaining serial communication protocol.
Described main control module mainly complete modulating and demodulating signal, synchronizing signal process, network communication process, combining unit lead to
The functions such as news process.Realize the demodulation of useful signal, and based on demodulation result, calculate fed back values size and feed back.Separately
Outer demodulation result is integrated with filtering data process after, export in background devices as result of calculation.
Described main control module uses processor to include but not limited to that the chips such as FPGA, DSP, CPU complete core processing algorithm
Computing, obtains feedback data and sampled value.Processor chips can be 1 or multiple chip.
Described one highly reliable low time delay all-fiber current transformator, it is not necessary to be connected with combining unit, can be direct
With background devices communication, sampled value and warning signal are transmitted directly to backstage.Decrease combining unit link, improve equipment
Reliability, reduces data transmission delay.
Described one highly reliable low time delay all-fiber current transformator, possesses synchronizing function, can realize and electric network data
Synchronous transfer, accomplishes that information is promptly and accurately fed back.
The method have the advantages that 1) all-fiber current transformator possesses network communication function, it is not necessary to merge
Unit forwards data, reduce network transfer delay, improve the reliability of system；(2) possess synchronous signal receiver function, can be in real time
Receive outer synchronous signal, it is achieved data synchronization between devices；(3) possesses data synchronization processing function, it is possible to achieve multiple synchronization
Processing mode, adapts to different application scenarios.(4) possess warning information is transmitted directly to the ability on backstage, facilitate fault to believe
Breath transmission.(5) possess Multi-netmouth expanded function, multi-path network port transmitting-receiving can be carried out simultaneously.
Figure of description
Fig. 1 is present system general function cell schematics；
Fig. 2 is present system detailed functions module diagram；
Fig. 3 is external sync functions of modules schematic diagram of the present invention；
Fig. 4 is external equipment connection diagram of the present invention；
1-communication processing unit；2-modulating and demodulating signal unit；3-light path sensing unit；
11-external sync module；12-network communication module；13-combining unit communication module；
21-detector；22-samples conditioning module；23-analog-to-digital conversion module；24-main control module；25-gain control molding
Block；26-D/A converter module；27-feeds back conditioning module；
31-light source driver module；32-light source；33-bonder/circulator；The 34-polarizer；35-manipulator；36-postpones
Ring；37-senses ring；
111-GPS signal decoder module；112-Big Dipper signal decoder module；Signal decoder module during 113-Ethernet pair；
114-local synchronization signal generator module；115-pulse per second (PPS) decoder module；116-signal source control module；117-IRIG-B code solution
Code module；118-systematic sampling pulse generation module；119-system data synchronization processing module；
A11-synchronisation source 1；A12-synchronisation source 2；A21-sync cap 1；A22-sync cap 2；
B11-combining unit 1；B12-combining unit 2；B21-combining unit interface 1；B22-combining unit interface 2；
C11-protection device；C12-measurement apparatus；Other devices of C13-；C21-network interface 1；C22-network interface 2；C23-network interface n；
E0-highly reliable low time delay all-fiber current transformator.
Detailed description of the invention
Do further below in conjunction with drawings and Examples highly reliable low time delay all-fiber current transformator a kind of to the present invention
Explanation.
It is illustrated in figure 1 a kind of highly reliable low time delay all-fiber current transformator general function cell schematics of the present invention.
System comprises communication processing unit 1, completes the process function relevant to communication；Modulating and demodulating signal unit 2, completion system is believed
Number control, the function such as external signal process；Light path sensing unit 3, has been used for current signal sensitive function.
It is illustrated in figure 2 the present invention a kind of highly reliable low time delay all-fiber current transformator system detailed functions module signal
Figure, native system includes external sync module 11, is used for managing outer synchronous signal, and by system data and outer synchronous signal
Carry out registration process；Network communication module 12, for realizing the transmission-receiving function of data, this module comprises one or more (example
Such as 3,6,9 etc.), this interface can be connected with background devices, can replace combining unit by this module, reduces equipment
Usage quantity；Combining unit communication module 13, completes to be transferred to transformer data the function of combining unit, and this module can guarantee that
Equipment can normal compatible existing system system；Detector 21, it is achieved optical signal is converted to the signal of telecommunication, it is simple to follow-up signal processes；
Sampling conditioning module 22, carries out the conversion of small-signal so that magnitude of voltage meets the requirement of analog-to-digital conversion module 23 input signal, and
Possess suppression and the safeguard function of external disturbance；Analog-to-digital conversion module 23, mainly completes to convert analog signals into digital signal
Function, it is simple to follow-up be modulated demodulate computing；Main control module 24, completes the modulation and demodulation of transformer useful signal, closes
The functions such as ring feedback, gain control, interface communication, Synchronization Control, are core processing module；Gain control module 25, is used for controlling
Feedback link gain processed, reduces error in the range of full temperature；D/A converter module 26, completes digital signal and is converted to analogue signal merit
Can, it is used for controlling phase-modulator；Feedback conditioning module 27, completes feedback signal amplitude and adjusts so that it is meet phase-modulator
Voltage request；Light source driver module 31, produces the driving current signal that light source 32 needs, temperature control current signal so that it is be operated in
Optimum state；Light source 32, produces the optical signal required for the transmission of whole optical path signal；Bonder/circulator 33, completes light path fixed
To transfer function；The polarizer 34, completes line polarisation translation function；Manipulator 35, completes the signal of telecommunication and is converted to light phase change merit
Can, use 45 ° of weldings between manipulator 35 and the polarizer 34；Ring retard 36, improves light transmission time, reduces analog-digital converter
The requirement of part；Sensing ring 37, changes for Sensitive Current, and current value size is converted to the phase place change of optical signal.
It is illustrated in figure 3 the present invention a kind of highly reliable low time delay all-fiber current transformator external sync functions of modules signal
Figure, this module comprises gps signal decoder module 111, completes receiving the decode of gps signal；Big Dipper signal decoder module 112,
Complete receiving the decode of Big Dipper signal；Signal decoder module 113 during Ethernet pair, during Ethernet pair, the reception of signal is conciliate
Code；Local synchronization signal generator module 114, is used for utilizing system clock to produce synchronizing signal, does not has synchronizing signal defeated in outside
Fashionable, it is ensured that system worked well；Pulse per second (PPS) decoder module 115, completes the decoding of outside input pps pulse per second signal；Signal source control
Molding block 116, for input type and the input source of control system synchronizing signal, can be configured according to backstage configuration；
IRIG-B code decoder module 117, completes receiving the decode of IRIG-B signal；Systematic sampling pulse generation module 118, according to letter
The synchronizing signal of number source control module 116 output, according to the sample rate requirement of system configuration, generates sampling synchronization signals；System
Data synchronization processing module 119, is arranged according to system synchronization mode, carries out according to sampling synchronization signals.
It is illustrated in figure 4 a kind of highly reliable low time delay all-fiber current transformator external equipment connection diagram of the present invention,
External equipment includes synchronisation source 1A11, is connected with sync cap 1A21, is used for connecting outer synchronous signal, and this interface support synchronizes
Signal type configures, it is possible to support that type identifies automatically；Synchronisation source 2A12, sync cap 2A22 connects, and its function sets with outside
For including that synchronisation source 1A11 is identical；Combining unit 1B11, is connected with combining unit interface 1B21, for transformer data being transmitted
To combining unit, then arriving background devices again by combining unit, this interface can improve the compatible performance of transformer；Merge
Unit 2B12, is connected with combining unit interface 2B22；Protection device C11, is connected with network interface 1C21；Measurement apparatus C12, with net
Mouth 2C22 is connected；Other devices C13, is connected with network interface n C23；Network interface 1C21, network interface 2C22, network interface n C23 are used for will
Transformer data directly and backstage connection, between need not combining unit.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit, to the greatest extent
The present invention has been described in detail by pipe with reference to above-described embodiment, and those of ordinary skill in the field are it is understood that still
The detailed description of the invention of the present invention can be modified or equivalent, and any without departing from spirit and scope of the invention
Amendment or equivalent, it all should be contained in the middle of scope of the presently claimed invention.
Claims (3)
1. a highly reliable low time delay all-fiber current transformator, including modulating and demodulating signal unit and light path sensing unit, institute
State modulating and demodulating signal unit and include photodetector, sampled signal conditioning module, analog-to-digital conversion module, main control module, digital-to-analogue
Modular converter, feedback conditioning module, gain control module；Described light path sensing unit includes light source driver module, light source, coupling
Device, the polarizer, manipulator, ring retard, sensing ring；It is characterized in that: also include communication processing unit, described communication processing unit
Comprise external sync module, the network communication module connected with main control module.
Highly reliable low time delay all-fiber current transformator the most according to claim 1, it is characterised in that: external sync module
Including signal source control module and be connected to the gps signal decoder module of signal source control module input, the Big Dipper signal decoding
Signal decoder module, local synchronization signal generator module, pulse per second (PPS) decoder module, the decoding of IRIG-B code when module, Ethernet pair
Module；Signal source control module outfan welding system sampling pulse generation module, systematic sampling pulse generation module exports to being
System data synchronization processing module.
Highly reliable low time delay all-fiber current transformator the most according to claim 1, it is characterised in that: described mailing address
Reason unit includes combining unit communication module.
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| CN201610780521.2A CN106199126A (en) | 2016-08-31 | 2016-08-31 | A kind of highly reliable low time delay all-fiber current transformator |
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Cited By (3)
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| CN108845174A (en) * | 2018-04-08 | 2018-11-20 | 哈尔滨工业大学 | A kind of differential type all-fiber current transformator |
| CN111308156A (en) * | 2019-11-14 | 2020-06-19 | 许继集团有限公司 | All-fiber current transformer supporting multipoint light path state monitoring |
| CN111308157A (en) * | 2019-11-14 | 2020-06-19 | 许继集团有限公司 | All-fiber current transformer with quick set-up time and signal processing unit thereof |
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Application publication date: 20161207 |