CN104535853B - The distributed testing terminal of LTE radio communication intelligent substation test systems - Google Patents
The distributed testing terminal of LTE radio communication intelligent substation test systems Download PDFInfo
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Abstract
The present invention relates to the distributed testing terminal of LTE radio communication intelligent substation test systems, including FPGA module, the first to the second Ethernet transceiver module, wireless unidirectional broadcast module, wireless two-way broadcast module, GPS time blocks, gps antenna, DA change-over circuits, drive module, Ethernet fiber interface module and the first to the 2nd 4 road optical fiber interface；Its advantage is：Be easy to carry assembling, can be widely applied to the installation and debugging experiment of substation field and stop transport maintenance test, technical performance evaluation；It is connected by LTE wireless local private network modes with remote equipment, it is not necessary to which commissioning staff additionally carries optical fiber；The working condition of the secondary devices such as protection, observing and controlling can be investigated with the running status of the most of power system of accurate simulation；The related protection in multiple intervals, measure and control device are accessed simultaneously, are realized the complete test to whole station electrical secondary system, are optimized work on the spot flow.
Description
Technical field
The invention belongs to intelligent substation technical field of measurement and test, it is related to LTE radio communication intelligent substation test systems
Distributed testing terminal.
Background technology
Intelligent substation is based on DL860 standards（IEC61850 standards）, using digitized sampling, intelligent primary equipment and light
The advanced technologies such as fine Ethernet, with digitlization, networking and the characteristics of whole station information sharing, are improving intelligent substation water
Detection, debugging and experiment while flat also to transformer station propose higher requirement.
Intelligent substation test is to ensure that the key link that intelligent substation smoothly puts into operation, secondary equipment of intelligent converting station and
Reliability, the validity of systemic-function all rely on the guarantee of measuring technology.The test of secondary equipment of intelligent converting station not only should
Unit detection including equipment such as combining unit, intelligent terminal, digital protections, in addition it is also necessary to communicating between equipment, mutually grasp
Make and composition system carry out comprehensive system level test, it is therefore desirable to set up complete secondary equipment of intelligent converting station experiment,
Test system, realization includes the integration testing of the full functionalities such as relay protection, observing and controlling.
At present, in terms of tested person model, data transmission channel, terminal and interface technical merit influence, existing pin
To the testing tool of secondary equipment of intelligent converting station can not applications well in substation field test environment, realize multiple intervals,
The collaboration test of polytype equipment.Subject matter includes the following aspects：
1）Intelligent substation has the characteristics of communication digitlization, networking and whole station information sharing, traditional secondary device
Testing tool is typically only capable to receive and dispatch the test data of set form, completes particular device, the independent test of simple function, it is impossible to really
Protect the reliability and validity of allomeric function after composition system；
2）Various in the secondary system of intelligent substation configuration mode of operation, secondary device manufacturer is numerous and diverse, equipment group
There is larger difference in net mode, the communication protocol used, still can be common to different type without a kind of testing tool at present
The test assignment of intelligent substation；
3）Current intelligent substation wall protection is arranged in protection interior, and process layer combining unit and intelligent terminal are just
Ground dispersed placement；Given this distributed arrangement, by space length and ambient influnence, the interval whole group of substation field is through-flow logical
Pressure and function transmission etc. are difficult to, and the safe and stable operation to transformer station brings certain hidden danger；
4）Comprehensive performance detection can not be carried out to secondary device in a pre-installation, can only be by this part job placement at the scene
Debug link to carry out, make debugging efforts extremely heavy.
In summary, the mushroom development built with China intelligent station is, it is necessary to which a kind of new be applied to intelligent substation
The secondary device means of testing at scene.By more flexible data transfer and terminal access module, realize that test main website is seamless
Intelligent station electrical secondary system is accessed, typical intelligent station complex fault, developing fault and equipment deficiency, personnel's maloperation etc. is built
Advanced test application, the performance to secondary system of intelligent substation carries out comprehensively deep assessment.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of by LTE radio communications intelligent substation test system and true
Real secondary system of intelligent substation links together, and realizes the intelligent power transformation of LTE radio communications of the closed loop of whole test process
The distributed testing terminal for test system of standing.
It is to solve the technical scheme that is used of above-mentioned technical problem：A kind of LTE radio communications intelligent substation test system
The distributed testing terminal of system, including FPGA module, the first to the second Ethernet transceiver module, wireless unidirectional broadcast module, nothing
Line bidirectional broadcast module, GPS time blocks, gps antenna, DA change-over circuits, drive module, Ethernet fiber interface module and
One to the 2nd 4 road optical fiber interface；The FPGA module includes SV receiving modules, SV processing modules, GOOSE transceiver modules, GOOSE
Forwarding module, clock module, clock recovery module and DA processing modules；
2nd LTE of the input termination LTE radio communication intelligent substation test systems of the wireless unidirectional broadcast module
The sampled value signal output part of radio receiving transmitting module；The output end of the wireless unidirectional broadcast module is received through first Ethernet
Hair module connects the input of the SV receiving modules；The output of the SV receiving modules terminates the corresponding defeated of the SV processing modules
Enter end；
The output end of the SV processing modules connects the respective input of the DA processing modules and drive module respectively；
The on-off model port of 2nd LTE radio receiving transmitting modules of LTE radio communication intelligent substation test systems with
The corresponding port of the wireless two-way broadcast module is bi-directionally connected；The wireless two-way broadcast module is received through second Ethernet
Hair module and the corresponding port of the GOOSE transceiver modules are bi-directionally connected；The GOOSE transceiver modules are forwarded with the GOOSE
The corresponding port of module is bi-directionally connected；The GOOSE forwarding modules and the corresponding port of the drive module are bi-directionally connected；
The one 4 road optical fiber interface connects the corresponding output end of the drive module；
The 2nd 4 road optical fiber interface and the corresponding port of the drive module are bi-directionally connected；
Corresponding port of the gps antenna through the GPS time blocks and the clock module is bi-directionally connected；
The corresponding port of the clock module and the clock recovery module is bi-directionally connected；
The two-way company in corresponding port of the clock recovery module respectively with SV processing modules and Ethernet fiber interface module
Connect；
The interval combining unit of the output termination intelligent substation of the DA change-over circuits；
The sampling input of the wall protection supervisory equipment of the output termination intelligent substation of the one 4 road optical fiber interface
End；
The wall protection supervisory equipment GOOSE inputs of the output end of the 2nd 4 road optical fiber interface and intelligent substation/
Output end is bi-directionally connected；
Screen is bi-directionally connected during the light B codes pair of the Ethernet fiber interface module and intelligent substation.
The DA change-over circuits are made up of DAC8562 chips and its peripheral circuit.
The model Cyclone IV EP4CE2217I7N of the FPGA module；The first to the second Ethernet transmitting-receiving
The model of module is DB83640；The wireless unidirectional broadcast module and wireless two-way broadcast module are letter horse wireless bridge；
The model TIME-M3339 of the GPS time blocks；The model BCM5248 of the drive module；The Ethernet optical fiber
The model HFBR-2412TZ of interface module；The model of described first to the 2nd 4 road optical fiber interface is OCM3825-54.
The beneficial effects of the invention are as follows：
1）All hardware equipment of the present invention uses portable, modularized design, and be easy to carry assembling, can be widely applied to become
The installation and debugging experiment at power station scene and stop transport maintenance test, technical performance evaluation.
2）Distributed arrangement of the present invention based on intelligent substation considers, the experimental facilities of near-end is arranged in into difference
By the field apparatus at interval, connect, be connected by LTE wireless local private network modes with remote equipment, it is not necessary to debug people on the spot
Optical fiber is carried outside personnel, system constructing is convenient, environmental suitability is strong.
3）The present invention can investigate the secondary devices such as protection, observing and controlling with the running status of the most of power system of accurate simulation
Working condition, more comprehensive closed loop test is carried out to field device.
4）More conventional single device detection debugging method, the present invention accesses the related protection in multiple intervals, measure and control device simultaneously,
By simulating the electro-magnetic transient state of various failures, the action logic of check protection device, investigate protection device performance,
The performance of the Interoperability and communication network between secondary device is investigated, the complete test to whole station electrical secondary system is realized, it is excellent
Work on the spot flow is changed.
Brief description of the drawings
Fig. 1 is theory diagram of the invention.
Embodiment
Embodiment as shown in Figure 1 understands that it includes FPGA module, the first to the second Ethernet transceiver module, wireless list
To broadcast module, wireless two-way broadcast module, GPS time blocks, gps antenna, DA change-over circuits, drive module, Ethernet light
Fine interface module and the first to the 2nd 4 road optical fiber interface；The FPGA module includes SV receiving modules, SV processing modules, GOOSE
Transceiver module, GOOSE forwarding modules, clock module, clock recovery module and DA processing modules；
2nd LTE of the input termination LTE radio communication intelligent substation test systems of the wireless unidirectional broadcast module
The sampled value signal output part of radio receiving transmitting module；The output end of the wireless unidirectional broadcast module is received through first Ethernet
Hair module connects the input of the SV receiving modules；The output of the SV receiving modules terminates the corresponding defeated of the SV processing modules
Enter end；
The output end of the SV processing modules connects the respective input of the DA processing modules and drive module respectively；
The on-off model port of 2nd LTE radio receiving transmitting modules of LTE radio communication intelligent substation test systems with
The corresponding port of the wireless two-way broadcast module is bi-directionally connected；The wireless two-way broadcast module is received through second Ethernet
Hair module and the corresponding port of the GOOSE transceiver modules are bi-directionally connected；The GOOSE transceiver modules are forwarded with the GOOSE
The corresponding port of module is bi-directionally connected；The GOOSE forwarding modules and the corresponding port of the drive module are bi-directionally connected；
The one 4 road optical fiber interface connects the corresponding output end of the drive module；
The 2nd 4 road optical fiber interface and the corresponding port of the drive module are bi-directionally connected；
Corresponding port of the gps antenna through the GPS time blocks and the clock module is bi-directionally connected；
The corresponding port of the clock module and the clock recovery module is bi-directionally connected；
The two-way company in corresponding port of the clock recovery module respectively with SV processing modules and Ethernet fiber interface module
Connect；
The interval combining unit of the output termination intelligent substation of the DA change-over circuits；
The sampling input of the wall protection supervisory equipment of the output termination intelligent substation of the one 4 road optical fiber interface
End；
The wall protection supervisory equipment GOOSE inputs of the output end of the 2nd 4 road optical fiber interface and intelligent substation/
Output end is bi-directionally connected；
Screen is bi-directionally connected during the light B codes pair of the Ethernet fiber interface module and intelligent substation.
The DA change-over circuits are made up of DAC8562 chips and its peripheral circuit.
The model Cyclone IV EP4CE2217I7N of the FPGA module；The first to the second Ethernet transmitting-receiving
The model of module is DB83640；The wireless unidirectional broadcast module and wireless two-way broadcast module are letter horse wireless bridge；
The model TIME-M3339 of the GPS time blocks；The model BCM5248 of the drive module；The Ethernet optical fiber
The model HFBR-2412TZ of interface module；The model of described first to the 2nd 4 road optical fiber interface is OCM3825-54.
2nd LTE radio receiving transmitting modules of LTE radio communication intelligent substation test systems intelligently become with LTE radio communications
First LTE radio receiving transmitting module wireless connections of power station test system；The of LTE radio communication intelligent substation test systems
One LTE radio receiving transmitting modules are bi-directionally connected with emulating the corresponding port of main website.
SV receiving modules receive electric current, the voltage sampling signal transmitted from wireless channel（Emulation main website, which is calculated, to be obtained）.
The current-voltage sampling signal that SV processing modules obtain SV receiving modules, after being converted to by coding, stipulations
The SV messages that the secondary devices such as end transforming plant protecting device can be recognized, specific message is IEC61850-9-2 forms.
DA processing modules complete the digital quantity of sample values to the transfer process of analog quantity.
The GOOSE message transmitted from wireless channel is received, is forwarded to transforming plant protecting dress by GOOSE transmitting-receivings, forwarding module
The secondary device such as put, while transformer station is sent into GOOSE message is transferred to wireless module, and pass back to emulation main website.
Clock module realizes total system clock synchronizing function.
Clock recovery module is used for clock recovery when system clock is asynchronous.
In this mode, data terminal realizes the function of electric current, voltage transformer.8 tunnels analogy amounts of data terminal
The direct output current of interface, voltage analog small-signal, after power amplification circuit amplifies, by secondary current, voltage analog
Real interval combining unit is sent to, then the secondary devices such as protection, observing and controlling are supplied to by point-to-point or networking mode.It is this
Pattern can investigate secondary device operation and the communication performance including combining unit.
Under Intelligent substation merging unit simulation access module, data terminal instead of the work(of tested interval combining unit
Energy.Electric current that main website obtains EM transient calculation, voltage data are sent to data terminal by high-speed synchronous wireless channel, number
SV digitized sampling messages are directly exported by 4 road luminiferous ether network interfaces according to terminal, between being supplied to by point-to-point or networking mode
The secondary devices such as interlayer protection, observing and controlling, investigate its service behaviour.
Under the simulation access of intelligent substation intelligent terminal, the actual intelligent terminal in interval, switch tool primary equipment are tested not
The whole test closed loop of access, but being substituted by test data terminal realizes corresponding GOOSE message reception, forwarding capability.When
Protection device is collected after failure amount, and action command is passed through into the road optical Ethernet interface of terminal 4, wireless in GOOSE message form
Channel feedback is to main station system, and main station system accordingly changes the on off state in fault model, and adjusts the electric current of output, voltage
Amount, realizes the closed loop test of the functions of the equipments such as protection device.
The present invention according to intelligent substation testing standard and index, propose suitable for capital construction and maintenance test site based on
The intelligent substation integrated test system scheme of LTE radio communications.The integrated test system mainly includes the intelligent power transformation of high-performance
Stand real-time simulator, towards whole station level test electromagnetic transient simulation software, real-time I/O interface arrangements, LTE wireless data transmissions
Passage, distributed data terminal etc..
The test system not only can carry out unit detection to each component devices of intelligent station electrical secondary system, can also be right
It is to include the work(comprehensively such as digital protection, observing and controlling in intelligent substation between equipment and composition system carries out system level testing
Whole group can be provided and cooperate with test environment, had for the research of intelligent substation, design, experiment, detection and assessment etc. important
Meaning.
Corresponding to the Three-tider architecture framework of intelligent substation station level, wall and process layer.The integration testing platform with
Real secondary equipment of intelligent converting station collectively forms the simulated testing system of closed loop, and platform is tested intelligent substation secondary system
System provides electric current, the voltage needed for operation, both can be with the electric current in imitating substation normal course of operation, magnitude of voltage, can also
Fault current, voltage when imitating substation failure and maloperation, so that the action behavior and many sets of investigating single set protection are protected
The coordinated ability of shield.
The platform configuration has the universal model parameter library suitable for the different Main connection form of intelligent station, can analog line,
Various types of equipment faults such as transformer, bus and various plyabilities, the electromagnetic transient of developing fault.Pass through reality
When emulator and distributed data terminal between LTE high-speed synchronous wireless data channels, provide high-precision for whole test system
Degree, high real-time data transfer are ensured, flexibly and effectively realize single device such as combining unit, intelligent terminal, protection device in station
And whole group test.
Intelligent station real-time simulator is computing and the control core of whole secondary equipment of intelligent converting station integrated test system,
Based on Industry Control host hardware structure design, intelligent station simulation testing software is carried, GPF (General Protection False tester can be both realized
Function, again can by build fault model component realize to Typical Route, main transformer, bus-bar fault simulation.
Emulator main frame uses real time operating system, and man-machine interface is run on wherein, protected when normal operation can be provided,
High-precision current, magnitude of voltage needed for the devices such as observing and controlling, fault current, voltage when electric network fault and maloperation can be also provided
Value.Emulator possesses the detailed electrical-magnetic model of the equipment such as transformer, circuit, breaker and various fault models, and herein
On the basis of construct increasingly complex plyability, developing fault, can be to the performances of the secondary devices such as digital protection, observing and controlling
Carry out comprehensively careful dynamic model test.
Real-time I/O interfaces realize simulation core and peripheral analogue means carries out the interface work(of real-time information interaction
Energy.Based on the result of calculation of transformer station's real-time simulator, by numeral or analog form be relay protection, measure and control device height is provided
The voltage of precision, current signal source, and breaker, disconnecting switch, the feedback of status of grounding apparatus can be gathered in real time to emulation
Device.
PCI-E interface design based on FPGA, can using the special integration modules of the PCI Express for being built in FPGA
To save special PCI-E interface chip, cost of hardware design is reduced, the integrated level of hardware is improved.Using FPGA can
Programming characteristic, substantially increases design flexibility, adaptability and scalability.
LTE wireless data transmission channels：According to State Grid Corporation of China's intelligent station typical design requirements, 220kV and above intelligence
The wall that can stand protection is arranged in protection interior, and process layer combining unit and intelligent terminal are arranged in by primary equipment on the spot,
Based on this distributed arrangement, the test data transmission in the present invention between process layer and wall uses wireless mode.Channel radio
Letter equipment is connected by the PCI-E buses of real-time I/O interfaces with emulating host computer, and voltage x current amount is separately sent between specifying
Every, and it is uploaded to emulator after the GOOSE message parsing that each interval feedback is come.
Consider data scale, propagation delay time shake etc. factor, the present invention in experiment data transfer using TD-LTE without
Line local private network mode.Which follows 3GPP R10 LTE series of standard protocols, it is contemplated that in transformer station's actual application environment
Face the factors such as frequency interference, deployed with devices and extension, selection working frequency range is that 1.4/1.8GHz is changeable.According to typical intelligent station
Interval scale, determines the descending 80Mbps of data rate, up 30Mbps, maximum UE number 16.
The transceiver uses 2 antennas（2, which receive 1, sends out）, peak transmitted power 2W, effective covering radius 3km are fully able to meet
Typical intelligent substation application scale.In addition, in order that this emulation test system more portability, facilitates field application, by LTE
ENodeB functions of the equipments, EPC core net functions in standard are integrated into the embedded OS of master device, are greatly increased
The integrated level of system, reduces cost, facilitates the operation and maintenance of system.
Distributed data terminal links together simulation test platform with real secondary system of intelligent substation, realizes
The closed loop of whole test process.In practical application, each data terminal can be positioned over by each intelligent convergence control cabinet in interval to be measured, passed through
The secondary devices such as cable or optical cable and transformer station combining unit, intelligent terminal are connected.The data terminal should have analog quantity simultaneously
With two kinds of sampled value output modes of digital quantity, the simulation to combining unit front-end and back-end output data is realized.In addition, data are whole
End also has the function that GOOSE state informations communicate, and is connected by equipment such as point-to-point or GOOSE nets and protection, observing and controlling, into
For wall and the interface of process layer information exchange.In addition, the high temporal uniformity to ensure test system and secondary device,
Terminal should also be with function synchronous with certainty at accurate pair.
Data terminal supports two wireless modules simultaneously, is connected by wireless channel with emulating host computer, and one receives sampling
Value information, another is dedicated for transmit-receive switch amount and positional information.
8 light 100 m ethernet interfaces of data terminal hardware supported, wherein 4 are used to transmit the same IEC61850- in 4 tunnels
9-2 or FT3 form SV messages, 4 are used to transmit the same GOOSE message of 4 tunnel contents in addition.SV communications use full dataset report
Text, data terminal supports 8 unique identifying numbers, and sampled value needed for this interval is extracted from SV messages by the identification number, and
Communicated by following communication protocol：【The identification number of terminal 1】【The sampled value of passage 1】…【The sampled value of passage 8】…【Terminal n is identified
Number】【The sampled value of passage 1】…【The sampled value of passage 8】.
Data terminal supports 8 road DA to output, two kinds of Main connection forms of compatible double-bus and 3/2 wiring.In double-bus form
Under, line segregation data terminal provides 1u+3i analog output, and the analog quantity that bus interval data terminal provides 3u+3u is defeated
Go out；Under 3/2 mode of connection, line segregation data terminal exports 4u+4i analog quantity, bus interval data terminal output 4u+
4u analog quantity.
In addition, data terminal and emulating host computer support multiple synchronization mode, including：
1. main frames and terminal are equipped with system during GPS pairs of independent space-based, when passing through reserved GPS interface connection pair day
Line, during realization pair；
2. main frames and terminal is each reserves a ST optical port, screen cabinet when being all connected to transformer station's light B codes pair, and during interior pair of station
System keeps synchronous；
3. when uses wireless data sending radio principals and subordinates couple, main frame to terminal send independent wireless pair when signal, realize master
Between pair when.
Mode can individually be selected according to real space environment, signal conditioning etc. at above-mentioned three kinds pairs, can also work simultaneously,
Standby each other, it is ensured that whole emulation test system is operated under same clock.Different wireless terminals must be synchronously in 10 μ s
Accuracy rating in.
During actual engineering test, the data terminal can access electrical secondary system in several ways, realize not
Functional simulation and electrical secondary system different range with equipment, the stress test of difference in functionality.
1. combining units are simulated
In such a mode, data terminal instead of the function of tested interval combining unit.Main website is by EM transient calculation
Electric current, the voltage data of acquirement are sent to data terminal by high-speed synchronous wireless channel, and data terminal passes through 4 road optical Ethernets
Mouth directly exports SV digitized sampling messages, is supplied to wall protection, observing and controlling etc. are secondary to set by point-to-point or networking mode
It is standby, investigate its service behaviour.
2. transformers are simulated
In this mode, data terminal realizes the function of electric current, voltage transformer.8 tunnels analogy amounts of data terminal
The direct output current of interface, voltage analog small-signal, after power amplifier amplifies, secondary current, voltage analog are sent out
Real interval combining unit is given, then the secondary devices such as protection, observing and controlling are supplied to by point-to-point or networking mode.This mould
Formula can investigate secondary device operation and the communication performance including combining unit.
The transmission of GOOSE state informations equally has following two patterns：
3. intelligent terminals are simulated
In this mode, the actual intelligent terminal in interval, switch tool primary equipment are tested and does not access whole test closed loop, and
It is to be substituted to realize corresponding GOOSE message reception, forwarding capability by test data terminal.When protection device collects failure amount
Afterwards, action command is fed back into main station system in GOOSE message form by the road optical Ethernet interface of terminal 4, wireless channel, it is main
System of standing accordingly changes the on off state in fault model, and adjusts the electric current of output, voltage, realizes the equipment such as protection device
The closed loop test of function.
4. belt switches whole group is driven
The pattern realizes the whole group test of interval secondary system belt switch primary equipment to be measured.Exist with the difference of mode 1
In, protection device is collected after failure amount, and breaker tripping and closing are realized according to actual protection-intelligent terminal-switchgear loop,
Test data terminal returns to main station system, main website changes after parsing from GOOSE net collections corresponding message by wireless channel
On off state in fault model, and accordingly adjust the electric current of output, voltage.Realization includes intelligent terminal and switch is once set
Whole group dynamic model test including standby.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (3)
1. a kind of distributed testing terminal of LTE radio communications intelligent substation test system, it is characterised in that：Including FPGA moulds
Block, the first to the second Ethernet transceiver module, wireless unidirectional broadcast module, wireless two-way broadcast module, GPS time blocks, GPS
Antenna, DA change-over circuits, drive module, Ethernet fiber interface module and the first to the 2nd 4 road optical fiber interface；The FPGA moulds
Block includes SV receiving modules, SV processing modules, GOOSE transceiver modules, GOOSE forwarding modules, clock module, clock recovery module
With DA processing modules；
2nd LTE of the input termination LTE radio communication intelligent substation test systems of the wireless unidirectional broadcast module is wireless
The sampled value signal output part of transceiver module；The output end of the wireless unidirectional broadcast module receives and dispatches mould through first Ethernet
Block connects the input of the SV receiving modules；The corresponding input of the output termination SV processing modules of the SV receiving modules
End；
The output end of the SV processing modules connects the respective input of the DA processing modules and drive module respectively；
The on-off model port of 2nd LTE radio receiving transmitting modules of LTE radio communication intelligent substation test systems with it is described
The corresponding port of wireless two-way broadcast module is bi-directionally connected；The wireless two-way broadcast module receives and dispatches mould through second Ethernet
The corresponding port of block and the GOOSE transceiver modules is bi-directionally connected；The GOOSE transceiver modules and the GOOSE forwarding modules
Corresponding port be bi-directionally connected；The GOOSE forwarding modules and the corresponding port of the drive module are bi-directionally connected；
The one 4 road optical fiber interface connects the corresponding output end of the drive module；
The 2nd 4 road optical fiber interface and the corresponding port of the drive module are bi-directionally connected；
Corresponding port of the gps antenna through the GPS time blocks and the clock module is bi-directionally connected；
The corresponding port of the clock module and the clock recovery module is bi-directionally connected；
Corresponding port of the clock recovery module respectively with SV processing modules and Ethernet fiber interface module is bi-directionally connected；
The interval combining unit of the output termination intelligent substation of the DA change-over circuits；
The sampling input of the wall protection supervisory equipment of the output termination intelligent substation of the one 4 road optical fiber interface；
The output end of the 2nd 4 road optical fiber interface and the wall protection supervisory equipment GOOSE input/output of intelligent substation
End is bi-directionally connected；
Screen is bi-directionally connected during the light B codes pair of the Ethernet fiber interface module and intelligent substation.
2. the distributed testing terminal of LTE radio communications intelligent substation test system according to claim 1, its feature
It is：The DA change-over circuits are made up of DAC8562 chips and its peripheral circuit.
3. the distributed testing terminal of LTE radio communications intelligent substation test system according to claim 2, its feature
It is：The model Cyclone IV EP4CE2217I7N of the FPGA module；The first to the second Ethernet transceiver module
Model be DB83640；The wireless unidirectional broadcast module and wireless two-way broadcast module are letter horse wireless bridge；It is described
The model TIME-M3339 of GPS time blocks；The model BCM5248 of the drive module；The Ethernet optical fiber interface
The model HFBR-2412TZ of module；The model of described first to the 2nd 4 road optical fiber interface is OCM3825-54.
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| CN105203870A (en) * | 2015-09-07 | 2015-12-30 | 国家电网公司 | Intelligent transformer substation secondary equipment integrated test system based on power line communication |
| CN109842099B (en) * | 2017-11-27 | 2021-08-03 | 许继集团有限公司 | Method for realizing line protection dual secondary circuit |
| CN110138602B (en) * | 2019-04-28 | 2022-08-16 | 许昌开普检测研究院股份有限公司 | Message simulation processing system |
| CN110579658B (en) * | 2019-08-22 | 2022-11-25 | 国网安徽省电力有限公司 | Automatic test system and test method for intelligent substation protection device |
| CN110763937A (en) * | 2019-10-31 | 2020-02-07 | 国网河南省电力公司电力科学研究院 | Intelligent substation test platform and method based on electromagnetic transient real-time simulation |
| CN111461515B (en) * | 2020-03-26 | 2022-04-19 | 广东电网有限责任公司 | Intelligent analysis method for transformer substation vacant interval based on electric power big data |
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