CN106411361A - Electricity information collection system based on medium voltage power carrier and control method thereof - Google Patents
Electricity information collection system based on medium voltage power carrier and control method thereof Download PDFInfo
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- CN106411361A CN106411361A CN201610456038.9A CN201610456038A CN106411361A CN 106411361 A CN106411361 A CN 106411361A CN 201610456038 A CN201610456038 A CN 201610456038A CN 106411361 A CN106411361 A CN 106411361A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/546—Combination of signalling, telemetering, protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The present invention discloses an electricity information collection system based on a medium voltage power carrier and a control method thereof. The system comprises a concentrated copy main station which is connected with a medium-voltage carrier host, the medium-voltage carrier host is connected with a coupler, the coupler is connected to a medium-voltage carrier slave and is coupled to a 10KV medium-voltage electric power circuit; the medium-voltage carrier slave is connected with a concentrator, and the medium-voltage carrier host/slave is composed of a high-speed carrier chip SSC1664/1663, an interface module connected with the medium-voltage carrier host/slave and configured to connect with the concentrated copy main station and an unvarnished transmission module configured to receive data. According to the invention, when data is transmitted, the highest rate can reach up to 5Mbps, the lowest rate can reach up to 100kbps, and the transmission rate is far superior to the transmission rate of the current medium-voltage power line carrier communication system, and the electricity information collection system based on the medium voltage power carrier and the control method thereof can support the new business development with high transmission rate requirement such as cost control, telecommand, telemetering and remote regulation, and remote switching of a valve.
Description
Technical field
The invention belongs to power splitter technical field, more particularly, to a kind of adopted based on the power information of medium voltage electricity carrier wave
Collecting system and its control method.
Background technology
In power information acquisition system, up-link（Concentrator is to main website）Generally adopt GPRS, optical fiber or electric power special
Net carries out data transmission.GPRS has advantage easy for installation, and speed is relatively low（Generally in tens kbit about）；Optical fiber and electric power
Although private network speed is higher, face the problem that up-front investment is big, later maintenance is difficult, and current power information acquisition system
In, telecommunication technique mainly adopts wireless public network, optical fiber private network, 230 MHz private networks, other communication modes such as GPRS/CDMA
Deng overall subject matter is as follows：
1）For a long time, large-scale application produces substantial amounts of rent and uses, and data flux statistics are opaque；
2）Service application depends on the Internet resources that operator provides, application level and popularization progress to be limited by public network and builds journey
Degree；
3）Public network communication meets common user's service application first it is impossible to ensure the quality of service requirements such as real-time, time delay；
4）There is public network system upgrade replacement risk；
5）Network's coverage area and power supply area not quite identical it is possible to lead to wandering fee；
6）There is wireless public network and cover blind spot in power information acquisition terminal installation site.
Content of the invention
The technical problem to be solved in the present invention is：For the problems referred to above, a kind of electricity consumption based on medium voltage electricity carrier wave is proposed
Information acquisition system and its control method, signal attenuation characteristic is little, and noise jamming is little, and data transfer is more reliable and more at a high speed, takes
With low, limited little, update convenient and swift, cover more comprehensively, to solve problems of the prior art.
The technical scheme that the present invention takes is：A kind of power information acquisition system based on medium voltage electricity carrier wave, including collection
Copy main website, Ji Chao main website is connected to medium-voltage carrier main frame, medium-voltage carrier main frame is connected to coupler, and coupler is connected to middle ballast
Ripple slave and being coupled on 10KV medium voltage power lines, medium-voltage carrier slave is connected to concentrator, and the master/slave machine of medium-voltage carrier is by height
Fast carrier chip SSC1664/1663 and the connected interface module for being connected to Ji Chao main website and be used for receiving data
Transparent transmission module composition.
Interface module includes RJ-45 interface, RS232 interface and RS485 interface three class interface.
Medium-voltage carrier repeater is installed additional on medium voltage power lines.
Coupler adopts capacity coupler or inductive coupler.
Capacity coupler is installed in ring main unit, its carrier wave frequency range 1MHz ~ 10MHz, sending allowance<2dB, line side mark
Claim -40 DEG C ~+80 DEG C and rated power >=100W of impedance 75 Ω, operating ambient temperature.
Inductive coupler adopts car coat type inductive coupler or injection inductive coupler.
Car coat type inductive coupler is directly clamped among on middle line ball, forms loop by the shielding layer grounding of inductance, carrier wave
Signal is coupled to cable shield, its carrier wave frequency range 1 MHz ~ 10 MHz, sending allowance<5 dB, line side nominal impedance 75
Ω, -40 DEG C ~+80 DEG C of operating ambient temperature, rated power >=100 W, car coat type inductive internal diameter >=90 mm, insulation
Resistance >=106 Ω, impulse sparkover voltage≤1000 V and short-time current ability to bear 800 A/s.
Injection inductive coupler is arranged in cable shield and earth-return circuit, and carrier signal is injected into inductor shield
In layer, its carrier wave frequency range 1 MHz ~ 10 MHz, sending allowance<1.5 dB, line side nominal impedance 75 Ω, working environment temperature
- 40 DEG C ~+80 DEG C of degree, rated power >=100 W, single-pulse current withstand forces 30 kA cards, insulaion resistance >=106 Ω, punching
Hit discharge voltage≤1000 V and short-time current ability to bear 800 A/s.
A kind of acquisition method of the power information acquisition system based on medium voltage electricity carrier wave, the method step is：Master copied by collection
Stand and be connected with medium-voltage carrier main frame by RJ-45/RS232/RS485 interface, issue control command and gather each medium-voltage carrier from
The data of machine；When Ji Chao main website issues control command, first by medium-voltage carrier main frame, digital signal modulated is become bandwidth carrier to believe
Number, by coupler by broadband carrier signal be coupled to 10 kV medium voltage power lines in, via switchgear house end coupling device and in
Ballast ripple slave completes carrier signal coupling and demodulates, and medium-voltage carrier slave passes through RJ-45/RS232/RS485 interface and low pressure
The concentrator of electric power line end connects, and final control command is sent to concentrator.
The master/slave machine of medium-voltage carrier, after the external world receives data, need to judge to the validity of data, Effective judgement
Method adopt the odd, even method of calibration of Frame, through verification after valid data, by transparent transmission module transfer to high speed carrier core
In piece, need to carry out data frame reconstruction according to transmission by carrier chip, to support different communication protocols；Carrier chip module
Various main flow communication protocols can be write as needed；Support transparent transmission between medium-voltage carrier slave, and support that a master is many
From networking requirements；Medium-voltage carrier slave is automatically registered to specified medium-voltage carrier main frame, configures subordinate relation；Medium-voltage carrier slave
Support dual-homed, that is, medium-voltage carrier slave priority of registration, to medium-voltage carrier host A, if medium-voltage carrier host A is obstructed, is registered to
Medium-voltage carrier host B.
Beneficial effects of the present invention：Compared with prior art, effect is as follows：
（1）The present invention adopts high speed carrier chip and during medium-voltage line transmission data, and flank speed, up to 5Mbps, minimum also may be used
Reach 100 kbps, transfer rate is far superior to existing medium voltage electricity carrier communication system, expense can be supported to control, three distant, remotely draw
The new business higher to transmission rate request such as combined floodgate is carried out；
（2）The present invention adopts high speed carrier chip SSC1664/1663 to realize communication, its interior OFDM technology, improves equipment
Anti-interference, simultaneously to receive data verified, be data correctness provide guarantee it is ensured that data highly reliable
Property；
（3）The present invention adopts the physical layer transmission flank speed of high speed carrier chip SSC1664/1663 up to 25Mbps, worst
In the case of also up to more than 100kbps, the traffic rate of far super existing medium voltage electricity carrier system, traffic rate is high；
（4）The present invention can be distant according to the five of distribution automation（Remote signalling, remote measurement, remote regulating, remote control, remote viewing）Require, distribution substation
Monitoring, feeder automation, public change detection, load monitoring require traffic rate need to reach more than 4MBPS, and European intelligent grid
Research project INTEGRIS is analyzed, and the distribution network automated demand to distribution traffic rate is 4Mbps, could effective support join
Electric network data communicating requirement, and the present invention possesses the above-mentioned speed of offer；
（4）Engineering construction is simple, possesses the ability of quick networking, transforms multi-point and wide-ranging for Distribution Network Communication node storage, point
Cloth scope is big, scattered distribution, and quantities is big, simultaneously national New Town Construction, and distribution network communication system increases node substantial increase newly,
Engineering construction therefore of the present invention is simple, possess the ability of quick networking；
（5）Ease for use, ease for maintenance, the present invention and related control device are arranged on same position, and the maintenance of communication system is simple
Easy；
（6）Communication device interface standardizes, and the information collecting device species in existing power distribution network is many, complex interfaces, and usual
In the case of, power information concentrator is arranged near distribution transforming, the standard interface of the present invention by distribution transforming directly with medium-voltage line phase
Connection carries out data transmission, and connects more reliable, and handling are safeguarded more convenient；
（7）Because medium-voltage line bridges along the line, distribution transforming is relatively more, lines branch line is many, and therefore multipath effect projects, further, since
The main task of power circuit is the low-frequency transmission design for tens Hz, will transmit high-frequency signal effective gram on this circuit
The problems such as high-frequency signal when taking interchannel noise interference, impedance variations and connecting wires is revealed, and the present invention adopts high speed carrier
Chip SSC1664/1663 and transparent transmission module are realized medium voltage electricity carrier wave and are had suppression noise jamming, opposing decay, multipath effect
Etc. ability, and medium voltage power line road network has the characteristics that structure is simple, signal attenuation characteristic is little, noise jamming is little, very suitable
Share in power line communication.
Brief description
Fig. 1 is the control structure schematic diagram of the present invention；
Fig. 2 is the capacity coupler mounting structure schematic diagram of the present invention；
Fig. 3 is the car coat type inductive coupler mounting structure schematic diagram of the present invention；
Fig. 4 is the injection inductive coupler mounting structure schematic diagram of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, the various enforcements that will be described below
Example will be with reference to corresponding accompanying drawing, and these accompanying drawings constitute a part for embodiment, which describes and realizes the present invention and may adopt
Various embodiments.It should be appreciated that it is also possible to use other embodiments, or structure and work(are carried out to embodiment enumerated herein
Modification on energy, without departing from the scope of the present invention and essence.
Embodiment 1：As shown in figure 1, a kind of power information acquisition system based on medium voltage electricity carrier wave, copy master including collection
Stand, Ji Chao main website is connected to medium-voltage carrier main frame, medium-voltage carrier main frame is connected to coupler, coupler be connected to medium-voltage carrier from
Machine and being coupled on 10KV medium voltage power lines, medium-voltage carrier slave is connected to concentrator, and the master/slave machine of medium-voltage carrier is by carrying at a high speed
Ripple chip SSC1664/1663 and the connected interface module for being connected to Ji Chao main website and saturating for receiving data
Transmission module forms.
Interface module includes RJ-45 interface, RS232 interface and RS485 interface three class interface.
Medium-voltage carrier repeater is installed additional on medium voltage power lines, when Ji Chao main website is distant apart from low-voltage distribution room, surpasses
When crossing the point-to-point maximum communication distance of medium-voltage carrier machine, need in medium voltage power line increase medium-voltage carrier repeater, by
The communication distance that continues can reach 10 more than km.
Coupler adopts capacity coupler or inductive coupler.
Capacity coupler is installed in ring main unit, its carrier wave frequency range 1MHz ~ 10MHz, sending allowance<2dB, line side mark
Claim -40 DEG C ~+80 DEG C and rated power >=100W of impedance 75 Ω, operating ambient temperature, capacity coupler integral structure is adopted
Use pouring-in coupling, integrated capacitor coupler have small volume, low cost, safe and reliable to operation the features such as, suitable trolley line
Road, as shown in Figure 2.
Inductive coupler adopts car coat type inductive coupler or injection inductive coupler.
Car coat type inductive coupler is directly clamped among on middle line ball, forms loop by the shielding layer grounding of inductance, carrier wave
Signal is coupled to cable shield, its carrier wave frequency range 1 MHz ~ 10 MHz, sending allowance<5 dB, line side nominal impedance 75
Ω, -40 DEG C ~+80 DEG C of operating ambient temperature, rated power >=100 W, car coat type inductive internal diameter >=90 mm, insulated electro
Resistance >=106 Ω, impulse sparkover voltage≤1000 V and short-time current ability to bear 800 A/s are it is adaptable to trolley line and buried
Line.The major advantage of this coupled modes is power-off to install, as shown in figure 3, bus bar 1, cable shield ground wire 2, connects
Ground terminal 3, the master/slave machine of medium-voltage carrier, lead-out wire 5, coupler 6, anchor ear 7, cable 8.
Injection inductive coupler is arranged in cable shield and earth-return circuit, and carrier signal is injected into inductor shield
In layer, its carrier wave frequency range 1 MHz ~ 10 MHz, sending allowance<1.5 dB, line side nominal impedance 75 Ω, working environment temperature
- 40 DEG C ~+80 DEG C of degree, rated power >=100 W, single-pulse current withstand forces 30 kA cards, insulaion resistance >=106 Ω, punching
Hit discharge voltage≤1000 V and short-time current ability to bear 800 A/s it is adaptable to trolley line and underground line.This coupling side
The major advantage of formula is that access decay is minimum, as shown in figure 4, bus bar 1, cable 2, screen layer ground wire 3, coupler 4, earth terminal
5, lead-out wire 6, the master/slave machine of medium-voltage carrier 7, in figure dotted line does not allow to be grounded.
Embodiment 2：A kind of acquisition method of the power information acquisition system based on medium voltage electricity carrier wave, the method step
For：Ji Chao main website is connected with medium-voltage carrier main frame by RJ-45/RS232/RS485 interface, issue control command and collection each in
The data of ballast ripple slave；When Ji Chao main website issues control command, first by medium-voltage carrier main frame, digital signal modulated is become wide
Band carrier signal, by coupler, broadband carrier signal is coupled in 10 kV medium voltage power lines, via the coupling at switchgear house end
Device and medium-voltage carrier slave complete carrier signal coupling and demodulate, and medium-voltage carrier slave is connect by RJ-45/RS232/RS485
Mouth is connected with the concentrator of low-voltage power line end, and final control command is sent to concentrator.
The master/slave machine of medium-voltage carrier, after the external world receives data, need to judge to the validity of data, Effective judgement
Method adopt the odd, even method of calibration of Frame, through verification after valid data, by transparent transmission module transfer to high speed carrier core
In piece, need to carry out data frame reconstruction according to transmission by carrier chip, to support different communication protocols；Carrier chip module
Various main flow communication protocols, such as 376.1,645 stipulations can be write as needed；Transparent biography is supported between medium-voltage carrier slave
Defeated, and support the networking requirements of one master and multiple slaves；Meanwhile, in order to realize the adaptivity of system, medium-voltage carrier slave is noted automatically
Volume is to specified medium-voltage carrier main frame it is not necessary to preassign passage it is only necessary to configure subordinate relation；Medium-voltage carrier slave is supported double
Ownership requirement, that is, medium-voltage carrier slave can with priority of registration to medium-voltage carrier host A, if medium-voltage carrier host A is obstructed,
Medium-voltage carrier host B can be registered to, ensure that the reliability of system work.
The pluses and minuses of existing communication mode are as follows：
1st, fiber optic communication, advantage：Speed is high, good reliability；
Not enough：Because the communication of power distribution network branch is multi-point and wide-ranging, using All fiber communication mode, invest huge；
1）Construction cost：Particularly High-Density Urban Area, fibre optic installations cost is very high；In addition, fibre optic installations also need to pay holding high
Expensive municipal set-fee；
2）O＆M cost：Once optical fibre damage, maintenance cost is very high；Urban renewal, distribution line change leads to fibre circuit
Change cost is very high；Special messenger need to be arranged safeguard.Line upkeep needs professional team；
3）Time cost：In fibre optic installations, municipal administration application, ditching break road, pipeline dig bury, Optical fiber relay design etc. is required for consuming
Take substantial amounts of time and human cost, cause the communication system completion time of project longer.
2nd, rent mobile operator channel（GPRS/3G/4G）, advantage：Implement simple, not enough：
1）The high cost of long-term leased channel, common signal channel safety risks are high；
2）When public network is busy, stability, real-time and reliability are poor；
3）Can not oneself management and maintenance channel；
4）Low communication speed is it is impossible to meet power distribution network " five is distant " communication requirement；
3rd, self-built wireless, advantage：Investment is little, it is simple to safeguard；
Not enough：1）Easily blocked by building, limited transmission distance is it is difficult to realize reliable communication end to end；
2）Affected by weather environment etc., poor reliability；
3）Distribution Network Equipment needs to change corresponding communication module ability and base station communication, needs and all devices manufacturer is set
Standby joint debugging, workload is very big；
4）Wireless coverage planning, enforcement difficulty are big；
5）It is difficult to manage and safeguard.
Thus the deficiency of the above-mentioned various types of communication mode of client of the present invention, realize following advantage：
（1）The present invention adopts high speed carrier chip and during medium-voltage line transmission data, and flank speed, up to 5Mbps, minimum also may be used
Reach 100 kbps, transfer rate is far superior to existing medium voltage electricity carrier communication system, expense can be supported to control, three distant, remotely draw
The new business higher to transmission rate request such as combined floodgate is carried out；
（2）The present invention adopts high speed carrier chip SSC1664/1663 to realize communication, its interior OFDM technology, improves equipment
Anti-interference, simultaneously to receive data verified, be data correctness provide guarantee it is ensured that data highly reliable
Property；
（3）The present invention adopts the physical layer transmission flank speed of high speed carrier chip SSC1664/1663 up to 25Mbps, worst
In the case of also up to more than 100kbps, the traffic rate of far super existing medium voltage electricity carrier system, traffic rate is high；
（4）The present invention can be distant according to the five of distribution automation（Remote signalling, remote measurement, remote regulating, remote control, remote viewing）Require, distribution substation
Monitoring, feeder automation, public change detection, load monitoring require traffic rate need to reach more than 4MBPS, and European intelligent grid
Research project INTEGRIS is analyzed, and the distribution network automated demand to distribution traffic rate is 4Mbps, could effective support join
Electric network data communicating requirement, and the present invention possesses the above-mentioned speed of offer；
（4）Engineering construction is simple, possesses the ability of quick networking, transforms multi-point and wide-ranging for Distribution Network Communication node storage, point
Cloth scope is big, scattered distribution, and quantities is big, simultaneously national New Town Construction, and distribution network communication system increases node substantial increase newly,
Engineering construction therefore of the present invention is simple, possess the ability of quick networking；
（5）Ease for use, ease for maintenance, the present invention and related control device are arranged on same position, and the maintenance of communication system is simple
Easy；
（6）Communication device interface standardizes, and the information collecting device species in existing power distribution network is many, complex interfaces, and usual
In the case of, power information concentrator is arranged near distribution transforming, the standard interface of the present invention by distribution transforming directly with medium-voltage line phase
Connection carries out data transmission, and connects more reliable, and handling are safeguarded more convenient；
（7）Because medium-voltage line bridges along the line, distribution transforming is relatively more, lines branch line is many, and therefore multipath effect projects, further, since
The main task of power circuit is the low-frequency transmission design for tens Hz, will transmit high-frequency signal effective gram on this circuit
The problems such as high-frequency signal when taking interchannel noise interference, impedance variations and connecting wires is revealed, and the present invention adopts high speed carrier
Chip SSC1664/1663 and transparent transmission module are realized medium voltage electricity carrier wave and are had suppression noise jamming, opposing decay, multipath effect
Etc. ability, and medium voltage power line road network has the characteristics that structure is simple, signal attenuation characteristic is little, noise jamming is little, very suitable
Share in power line communication.
In addition, medium-voltage carrier machine SSC1664/1663 broadband power line carrier chip, SSC1663/1664 is a by mould
Intend the special logical of front end, baseband modulation and demodulation, Digital Signal Processing, CPU kernel and the abundant highly integrated one of function peripheral hardware
Letter chip.Offer standard ethernet interface, slitless connection user equipment end, can be in media such as power line, coaxial cable, telephone wires
Under carry out effective data transfer, SSC1664/1663 system features are as follows：
● high frequency points, away from power line interference；
● multi-carrier modulation, automatically evade interference；
● priority communicates, and meets emergency communication demand；
● automatic relay forwards；
● support AES128 encryption, also support WAPI Encryption Transmission Protocol, ensure that information transmission security is reliable；
● advanced MSEH network, multipath addressing technique；
● low-power consumption works, energy-conserving and environment-protective；
● concurrent copy reading mechanism, lift meter reading efficiency；
● possess phase identification function, beneficial to line loss analyzing and threephase load equilibrium analysis.
The present invention also has the advantage that：Transmission between communication interface and high speed carrier chip adopts transparent transmission mode；System
System differentiates the validity of data using the method for odd, even verification；Multiple coupling access ways are provided to pass to adapt to different electric power
Defeated circuit.
The foregoing is only presently preferred embodiments of the present invention, those skilled in the art know, without departing from the present invention
Spirit and scope in the case of, various changes or equivalent can be carried out to these features and embodiment.In addition, at this
Under bright teaching, these features and embodiment can be modified to adapt to particular situation and material without departing from this
Bright spirit and scope.Therefore, the present invention is not limited to the particular embodiment disclosed, the power of fallen with the application
Embodiment in sharp claimed range broadly falls into protection scope of the present invention.
Claims (10)
1. a kind of power information acquisition system based on medium voltage electricity carrier wave it is characterised in that：Including Ji Chao main website, Ji Chao main website
It is connected to medium-voltage carrier main frame, medium-voltage carrier main frame is connected to coupler, coupler is connected to medium-voltage carrier slave and is coupled to
On 10KV medium voltage power lines, medium-voltage carrier slave is connected to concentrator, and the master/slave machine of medium-voltage carrier is by high speed carrier chip
SSC1664/1663 and the connected interface module for being connected to Ji Chao main website and the transparent transmission module for receiving data
Composition.
2. as claimed in claim 1 a kind of power information acquisition system based on medium voltage electricity carrier wave it is characterised in that：Interface
Module includes RJ-45 interface, RS232 interface and RS485 interface three class interface.
3. as claimed in claim 1 a kind of power information acquisition system based on medium voltage electricity carrier wave it is characterised in that：Middle pressure
Medium-voltage carrier repeater is installed additional on power circuit.
4. as claimed in claim 1 a kind of power information acquisition system based on medium voltage electricity carrier wave it is characterised in that：Coupling
Device adopts capacity coupler or inductive coupler.
5. as claimed in claim 1 a kind of power information acquisition system based on medium voltage electricity carrier wave it is characterised in that：Electric capacity
Coupler is installed in ring main unit, its carrier wave frequency range 1MHz ~ 10MHz, sending allowance<2dB, line side nominal impedance 75 Ω,
- 40 DEG C ~+80 DEG C and rated power >=100W of operating ambient temperature.
6. as claimed in claim 1 a kind of power information acquisition system based on medium voltage electricity carrier wave it is characterised in that：Inductance
Coupler adopts car coat type inductive coupler or injection inductive coupler.
7. as claimed in claim 1 a kind of power information acquisition system based on medium voltage electricity carrier wave it is characterised in that：Clamp
Formula inductive coupler is directly clamped among on middle line ball, forms loop by the shielding layer grounding of inductance, carrier signal is coupled to electricity
Cable screen layer, its carrier wave frequency range 1 MHz ~ 10 MHz, sending allowance<5 dB, line side nominal impedance 75 Ω, working environment
- 40 DEG C ~+80 DEG C of temperature, rated power >=100 W, car coat type inductive internal diameter >=90 mm, insulaion resistance >=106
Ω, impulse sparkover voltage≤1000 V and short-time current ability to bear 800 A/s.
8. as claimed in claim 1 a kind of power information acquisition system based on medium voltage electricity carrier wave it is characterised in that：Injection
Formula inductive coupler is arranged in cable shield and earth-return circuit, carrier signal is injected in inductor shield layer, its carrier wave
Frequency range 1 MHz ~ 10 MHz, sending allowance<1.5 dB, line side nominal impedance 75 Ω, -40 DEG C of operating ambient temperature ~+
80 DEG C, rated power >=100 W, single-pulse current withstand forces 30 kA cards, insulaion resistance >=106 Ω, impulse sparkover voltage
≤ 1000 V and short-time current ability to bear 800 A/s.
9. the collection side of described a kind of power information acquisition system based on medium voltage electricity carrier wave as arbitrary in claim 1-8
Method it is characterised in that：The method step is：Ji Chao main website passes through RJ-45/RS232/RS485 interface with medium-voltage carrier main frame even
Connect, the data issuing control command and gathering each medium-voltage carrier slave；When Ji Chao main website issues control command, first by middle ballast
Digital signal modulated is become broadband carrier signal by ripple main frame, by coupler, broadband carrier signal is coupled to 10 kV medium voltage electricities
In circuit, complete carrier signal coupling via the coupling device at switchgear house end and medium-voltage carrier slave and demodulate, medium-voltage carrier from
Machine is connected with the concentrator of low-voltage power line end by RJ-45/RS232/RS485 interface, and final control command is sent to
Concentrator.
10. a kind of acquisition method of the power information acquisition system based on medium voltage electricity carrier wave as claimed in claim 9, it is special
Levy and be：The master/slave machine of medium-voltage carrier, after the external world receives data, need to judge to the validity of data, Effective judgement
Method adopt the odd, even method of calibration of Frame, through verification after valid data, by transparent transmission module transfer to high speed carrier core
In piece, need to carry out data frame reconstruction according to transmission by carrier chip, to support different communication protocols；Carrier chip module
Various main flow communication protocols can be write as needed；Support transparent transmission between medium-voltage carrier slave, and support that a master is many
From networking requirements；Medium-voltage carrier slave is automatically registered to specified medium-voltage carrier main frame, configures subordinate relation；Medium-voltage carrier slave
Support dual-homed, that is, medium-voltage carrier slave priority of registration, to medium-voltage carrier host A, if medium-voltage carrier host A is obstructed, is registered to
Medium-voltage carrier host B.
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