CN102594411A - Transmission device for power line carrier communication - Google Patents

Transmission device for power line carrier communication Download PDF

Info

Publication number
CN102594411A
CN102594411A CN2012100954519A CN201210095451A CN102594411A CN 102594411 A CN102594411 A CN 102594411A CN 2012100954519 A CN2012100954519 A CN 2012100954519A CN 201210095451 A CN201210095451 A CN 201210095451A CN 102594411 A CN102594411 A CN 102594411A
Authority
CN
China
Prior art keywords
power line
line carrier
coaxial cable
carrier communication
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012100954519A
Other languages
Chinese (zh)
Inventor
李建新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WEIFANG DEVELOPMENT AREA LANLING SCIENTIFIC RESEARCH CENTER
Original Assignee
WEIFANG DEVELOPMENT AREA LANLING SCIENTIFIC RESEARCH CENTER
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WEIFANG DEVELOPMENT AREA LANLING SCIENTIFIC RESEARCH CENTER filed Critical WEIFANG DEVELOPMENT AREA LANLING SCIENTIFIC RESEARCH CENTER
Priority to CN2012100954519A priority Critical patent/CN102594411A/en
Publication of CN102594411A publication Critical patent/CN102594411A/en
Pending legal-status Critical Current

Links

Images

Abstract

The invention discloses a transmission device for power line carrier communication. The transmission device comprises a power line carrier communication concentrator. The power line carrier communication concentrator is connected with a power line carrier signal transmission device. The power line carrier signal transmission device is connected with a power line carrier communication acquirer, and comprises a main impedance matching transformer. The main impedance matching transformer is electrically connected with the power line carrier communication concentrator, and is connected in series with at least two coaxial cable branching devices through a coaxial cable. The branch output end of each coaxial cable branching device is connected with a branch impedance matching transformer through the coaxial cable. The branch impedance matching transformer is electrically connected with the power line carrier communication acquirer. By the impedance matching transformers, the impedance of a power line carrier signal can be changed to realize the impedance transmission matching of the power line carrier signal; and the power line carrier signal is transmitted by the communication coaxial cable and the coaxial cable branching device, so that the transmission distance of the power line carrier communication is prolonged, the stability, confidentiality and lightning shock resistance of the power line carrier communication are improved, and accurate power utilization information is provided for an upper-layer power control center.

Description

The power line carrier, PLC transmitting device
Technical field
The present invention relates to a kind of electricity consumption communications device, relate in particular to the carrier communication transmitting device that a kind of low voltage electric network uses.
Background technology
Power line carrier communication (PLC) system is a kind of communication mode that generally uses in the electric power system; In recent years; Power line high-speed communication technology has obtained fast development in China, has been widely used in power information transmission fields such as the electric power system automatic remote is checked meter, distribution automation, power transmission network communication.
Power-line carrier communication system of the prior art as shown in Figure 4 comprises the power line carrier communication concentrator; The power line carrier communication collector that is connected with the power line carrier communication concentrator through power line 2; The power line carrier communication collector connects devices such as ammeter through power line 2, realize the collection and the transmission of power information.Because the power line that the present transferring electric power carrier signal of China is used is to design as the 50Hz electric energy transmitting specially; It is complicated to add the power carrier signal transmission environment; Be that power system load changes frequently, have stronger time variation, and the carrier signal decay is big; Therefore at present the power-line carrier communication system of using is unfavorable for the transmission of high-frequency carrier signal, the factor that in the high-frequency carrier signal transmission course, influences its propagation also comprise following some:
One, the blocking-up of ammeter and emotional resistance, switch.
Two, the impedance of high decay, big dynamic change.
Three, various interference of noise.
Four, be subject to thunderbolt and over-voltage protection.
Five, high-frequency information is difficult for maintaining secrecy in transmission, and disturbs other power information transmission equipment easily.
Receive the influence of above multiple unfavorable factor, state labile when making power line carrier communication (PLC) system works, this phenomenon is perplexing electric power enterprise for a long time, becomes electric power enterprise and is badly in need of one of major issue that solves.
Summary of the invention
Technical problem to be solved by this invention provides the power line carrier, PLC transmitting device of a kind of strong interference immunity, long transmission distance.
For solving the problems of the technologies described above; Technical scheme of the present invention is: the power line carrier, PLC transmitting device; Be arranged on the low-voltage distribution side of electrical network; Comprise the power line carrier communication concentrator, said power line carrier communication concentrator is connected with the power carrier signal transmitting device, and said power carrier signal transmitting device is connected with the power line carrier communication collector; Said power carrier signal transmitting device comprises the main impedance converter that is electrically connected with said power line carrier communication concentrator; Said main impedance converter is serially connected with at least two coaxial cable splitters through coaxial cable; Branch's output of said coaxial cable splitter is connected with the branch impedance converter through coaxial cable, and impedance converter was electrically connected said power line carrier communication collector in said minute.
As optimized technical scheme; Said main impedance converter comprises primary coil that is connected with said power line carrier communication concentrator and the secondary coil that is connected with said coaxial cable, is provided with main impedance converter magnetic core between said primary coil and the said secondary coil.
As optimized technical scheme; Said minute impedance converter comprises and one-level coil that is connected with said power line carrier communication collector and the secondary coil that is connected with said coaxial cable is provided with branch impedance converter magnetic core between said one-level coil and the said secondary coil.
As optimized technical scheme, said main impedance converter magnetic core is set to high frequency magnetic core respectively with branch impedance converter magnetic core.
As optimized technical scheme, said coaxial cable comprises coaxial cable for high frequency.
As optimized technical scheme, the connection of said coaxial cable splitter is arranged and is comprised that Y-connection layout, chain connect layout, tree-like connection is arranged and annular is connected a kind of or two or more at least combination in arranging.
Owing to adopted technique scheme; The power line carrier, PLC transmitting device; Be arranged on the low-voltage distribution side of electrical network; Comprise the power line carrier communication concentrator, said power line carrier communication concentrator is connected with the power carrier signal transmitting device, and said power carrier signal transmitting device is connected with the power line carrier communication collector; Said power carrier signal transmitting device comprises the main impedance converter that is electrically connected with said power line carrier communication concentrator; Said main impedance converter is serially connected with at least two coaxial cable splitters through coaxial cable; Branch's output of said coaxial cable splitter is connected with the branch impedance converter through coaxial cable, and impedance converter connected said power line carrier communication collector in said minute; The invention has the beneficial effects as follows: form the network configuration that electric power data information is made a copy for and transmitted through power line carrier communication concentrator, power carrier signal transmitting device and power line carrier communication collector; And power carrier signal is through the coaxial cable transmission; Coaxial cable has the characteristics of low-loss, strong interference immunity, impedance stabilization; Make message transmission more reliable and more stable; Be more suitable for the long-distance transmissions of data; Improved stability, confidentiality and the anti-thunderbolt property of power line carrier, PLC, and the impedance converter that is provided with can change the impedance of power carrier signal, to realize the carrier signal impedance matching between coaxial cable and power line carrier communication concentrator, coaxial cable splitter and the power line carrier communication collector; For the upper strata power control center provides at a high speed power information accurately, for the intellectuality that realizes electric power energy lays the foundation.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structure principle chart of embodiment of the invention master impedance converter;
Fig. 3 is the structure principle chart that the embodiment of the invention is divided impedance converter;
Fig. 4 is the prior art constructions sketch map;
Among the figure: the 1-coaxial cable; The 2-power line; 3-master's impedance converter magnetic core; 4-divides the impedance converter magnetic core.
Embodiment
Below in conjunction with accompanying drawing and embodiment, further set forth the present invention.In the detailed description below, only some example embodiment of the present invention has been described through the mode of explanation.Undoubtedly, those of ordinary skill in the art can recognize, under situation without departing from the spirit and scope of the present invention, can revise described embodiment with various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used to limit the protection range of claim.
Power line carrier, PLC transmitting device as shown in Figure 1; Be arranged on the low-voltage distribution side of electrical network; Comprise the power line carrier communication concentrator, the power line carrier communication concentrator is connected with power control center, and the power line carrier communication concentrator is realized with multiple connected mode can be arranged being connected of power control center; As connecting through wired form or wireless network forms; Be convenient to the quick transmission of power information, said power line carrier communication concentrator is connected with the power carrier signal transmitting device, and said power carrier signal transmitting device is connected with the power line carrier communication collector.
Wherein said power carrier signal transmitting device comprises the main impedance converter that is electrically connected with said power line carrier communication concentrator; Said main impedance converter is serially connected with at least two coaxial cable splitters through coaxial cable 1; The main impedance converter that here connects is used for the high-impedance electric power carrier signal of power line transmission is converted to the Low ESR power carrier signal of coaxial cable transmission; To be fit to the transmission of coaxial cable 1; Branch's output of said coaxial cable splitter is connected with the branch impedance converter through coaxial cable 1; Impedance converter was electrically connected said power line carrier communication collector in said minute; The branch impedance converter that here connects is used for the Low ESR power carrier signal of coaxial cable transmission is converted to the high-impedance electric power carrier signal of power line transmission, to be fit to the transmission of power line.
As shown in Figure 2; The said main impedance converter of present embodiment comprises and primary coil that is connected with said power line carrier communication concentrator and the secondary coil that is connected with said coaxial cable 1 is provided with main impedance converter magnetic core 3 between said primary coil and the said secondary coil; As shown in Figure 3; Said minute impedance converter comprises and one-level coil that is connected with said power line carrier communication collector and the secondary coil that is connected with said coaxial cable 1 is provided with branch impedance converter magnetic core 4 between said one-level coil and the said secondary coil; And the branch impedance converter magnetic core 4 of the main impedance converter magnetic core 3 of said main impedance converter and said minute impedance converter is set to high frequency magnetic core respectively.Power carrier signal in the present embodiment is the high-frequency signal (65MHz-900MHz be broadcasting and TV use frequency range) of frequency in 2MHz~65MHz or two frequency ranges of 900MHz~1500MHz; So the power carrier signal frequency range that high frequency magnetic core can be handled is wider, uses more extensive.
Main impedance converter and of the impedance of branch impedance converter in order to adjusting change power line carrier data transfer signal; Because the equipment that uses in the existing power line carrier communication transmission means that employed power line carrier communication concentrator of present embodiment and power line carrier communication collector all are to use; And the power carrier signal of power line carrier communication concentrator that uses at present and the transmission of power line carrier communication collector is based on the power line transmission carrier signal of present 50Hz; Inconsistent with the power carrier signal impedance of transmitting in the coaxial cable for high frequency; Therefore the power carrier signal that coaxial cable for high frequency can't the existing power line carrier communication equipment of high efficiency of transmission; Must power line signal be carried out impedance matching and handle, could satisfy specification requirement of the present invention.
The connection of said coaxial cable splitter is arranged and is comprised that Y-connection layout, chain connect layout, tree-like connection is arranged and annular is connected a kind of or two or more at least combination in arranging.The quantity that is provided with of its standard coaxial cable splitter can freely be provided with according to the scope of electric power networks control, with collection, distribution and the transmission of satisfying power information.
Though the connection arrangement of coaxial cable splitter is different; But has identical operation principle; Be the power control center data of sending through impedance matching, the coaxial cable for high frequency of power line carrier communication concentrator, main impedance converter, carry out Signal Matching through undue impedance converter once more; The back is transferred in the power line carrier communication collector that is attached thereto by the coaxial cable splitter; Be transferred in descending power equipment such as the ammeter through the power line carrier communication collector, realize the connection communication of power line carrier, PLC net; Through the inverted running of above-mentioned circuit, can realize the collection transmission of power information in descending power equipment such as the ammeter, simultaneously so that power control center is to the macro adjustments and controls of power consumption.The present invention not only can be used in remote meter reading, also can use in distribution automation field such as communicate by letter with power transmission network.
The present invention utilizes coaxial cable for high frequency to substitute the high-frequency signal of traditional power line transmission power line carrier communication; Coaxial cable for high frequency is that a kind of low-loss, height are anti-interference, the high-frequency signal transmission medium of impedance stabilization; When transmission 2~28MHz power carrier signal; But when the cable branch device is not set in the transmission range 1000m; The coaxial cable splitter is set can transmits 500~800m, the distance of low-voltage powerline carrier communication same frequency signal transmission improves stability, the confidentiality of power line carrier, PLC simultaneously and resists thunderbolt property head and shoulders above.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.

Claims (7)

1. power line carrier, PLC transmitting device; Be arranged on the low-voltage distribution side of electrical network; Comprise the power line carrier communication concentrator; It is characterized in that: said power line carrier communication concentrator is connected with the power carrier signal transmitting device, and said power carrier signal transmitting device is connected with the power line carrier communication collector;
Said power carrier signal transmitting device comprises the main impedance converter that is electrically connected with said power line carrier communication concentrator; Said main impedance converter is serially connected with at least two coaxial cable splitters through coaxial cable; Branch's output of said coaxial cable splitter is connected with the branch impedance converter through coaxial cable, and impedance converter was electrically connected said power line carrier communication collector in said minute.
2. power line carrier, PLC transmitting device as claimed in claim 1; It is characterized in that: said main impedance converter comprises primary coil that is connected with said power line carrier communication concentrator and the secondary coil that is connected with said coaxial cable, is provided with main impedance converter magnetic core between said primary coil and the said secondary coil.
3. power line carrier, PLC transmitting device as claimed in claim 2 is characterized in that: said main impedance converter magnetic core is a high frequency magnetic core.
4. power line carrier, PLC transmitting device as claimed in claim 1; It is characterized in that: said minute impedance converter comprises and one-level coil that is connected with said power line carrier communication collector and the secondary coil that is connected with said coaxial cable is provided with branch impedance converter magnetic core between said one-level coil and the said secondary coil.
5. power line carrier, PLC transmitting device as claimed in claim 4 is characterized in that: said minute impedance converter magnetic core is high frequency magnetic core.
6. like the described power line carrier, PLC transmitting device of the arbitrary claim of claim 1 to 5, it is characterized in that: said coaxial cable comprises coaxial cable for high frequency.
7. power line carrier, PLC transmitting device as claimed in claim 6 is characterized in that: the connection of said coaxial cable splitter is arranged and is comprised that Y-connection layout, chain connect layout, tree-like connection is arranged and annular is connected a kind of or two or more at least combination in arranging.
CN2012100954519A 2012-04-01 2012-04-01 Transmission device for power line carrier communication Pending CN102594411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100954519A CN102594411A (en) 2012-04-01 2012-04-01 Transmission device for power line carrier communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012100954519A CN102594411A (en) 2012-04-01 2012-04-01 Transmission device for power line carrier communication

Publications (1)

Publication Number Publication Date
CN102594411A true CN102594411A (en) 2012-07-18

Family

ID=46482657

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012100954519A Pending CN102594411A (en) 2012-04-01 2012-04-01 Transmission device for power line carrier communication

Country Status (1)

Country Link
CN (1) CN102594411A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102750817A (en) * 2012-07-20 2012-10-24 李建新 Power data communication transmission system and method
CN102800187A (en) * 2012-07-20 2012-11-28 李建新 Electricity information transmission system for electricity meters
CN102932035A (en) * 2012-10-19 2013-02-13 华为技术有限公司 Power line communication frequency band selection method, concentrator and power line meter reading system
CN103647730A (en) * 2013-12-31 2014-03-19 李建新 Electricity consumption information communication system
CN107690754A (en) * 2015-06-03 2018-02-13 At&T知识产权部有限合伙公司 Client node device and the method for being therewith used for surface wave power line communication
CN108966469A (en) * 2018-09-20 2018-12-07 中国民用航空总局第二研究所 A kind of navaid lamp controller and method based on power-line carrier communication
CN111064497A (en) * 2019-11-15 2020-04-24 国网河南省电力公司驻马店供电公司 Acquisition, operation and maintenance system based on HPLC (high performance liquid chromatography) platform area

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6407987B1 (en) * 1989-04-28 2002-06-18 Wire21, Inc. Transformer coupler for communication over various lines
KR20080099565A (en) * 2007-05-10 2008-11-13 (주)매트론 Automatic meter reading method using power line communication(plc) through a neutral line
CN101317350A (en) * 2005-11-29 2008-12-03 Ls电线有限公司 Power line communication system using hybrid-fiber coaxial and communication device used in the system
CN101452033A (en) * 2009-01-08 2009-06-10 福建星网锐捷网络有限公司 Electromagnetic compatibility test probe for cable common mode signal and test equipment
CN201607819U (en) * 2010-01-08 2010-10-13 夏津县银光电力投资集团有限公司 Low-voltage wired automatic meter reading system
CN202524418U (en) * 2012-04-01 2012-11-07 潍坊开发区蓝岭科学研究中心 Transmission device for power carrier communication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6407987B1 (en) * 1989-04-28 2002-06-18 Wire21, Inc. Transformer coupler for communication over various lines
CN101317350A (en) * 2005-11-29 2008-12-03 Ls电线有限公司 Power line communication system using hybrid-fiber coaxial and communication device used in the system
KR20080099565A (en) * 2007-05-10 2008-11-13 (주)매트론 Automatic meter reading method using power line communication(plc) through a neutral line
CN101452033A (en) * 2009-01-08 2009-06-10 福建星网锐捷网络有限公司 Electromagnetic compatibility test probe for cable common mode signal and test equipment
CN201607819U (en) * 2010-01-08 2010-10-13 夏津县银光电力投资集团有限公司 Low-voltage wired automatic meter reading system
CN202524418U (en) * 2012-04-01 2012-11-07 潍坊开发区蓝岭科学研究中心 Transmission device for power carrier communication

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102750817A (en) * 2012-07-20 2012-10-24 李建新 Power data communication transmission system and method
CN102800187A (en) * 2012-07-20 2012-11-28 李建新 Electricity information transmission system for electricity meters
WO2014012493A1 (en) * 2012-07-20 2014-01-23 Li Jianxin Power data communication transmission system and method
CN102932035A (en) * 2012-10-19 2013-02-13 华为技术有限公司 Power line communication frequency band selection method, concentrator and power line meter reading system
CN102932035B (en) * 2012-10-19 2014-12-24 华为技术有限公司 Power line communication frequency band selection method, concentrator and power line meter reading system
CN103647730A (en) * 2013-12-31 2014-03-19 李建新 Electricity consumption information communication system
CN103647730B (en) * 2013-12-31 2016-06-22 李建新 A kind of power information communication system
CN107690754A (en) * 2015-06-03 2018-02-13 At&T知识产权部有限合伙公司 Client node device and the method for being therewith used for surface wave power line communication
CN108966469A (en) * 2018-09-20 2018-12-07 中国民用航空总局第二研究所 A kind of navaid lamp controller and method based on power-line carrier communication
CN108966469B (en) * 2018-09-20 2023-09-15 中国民用航空总局第二研究所 Navigation-aiding lamp controller and method based on power line carrier communication technology
CN111064497A (en) * 2019-11-15 2020-04-24 国网河南省电力公司驻马店供电公司 Acquisition, operation and maintenance system based on HPLC (high performance liquid chromatography) platform area
CN111064497B (en) * 2019-11-15 2022-04-19 国网河南省电力公司驻马店供电公司 Acquisition, operation and maintenance system based on HPLC (high performance liquid chromatography) platform area

Similar Documents

Publication Publication Date Title
CN102594411A (en) Transmission device for power line carrier communication
CN105098985A (en) System and method for identifying user change relationships in low-voltage power distribution based on power-frequency voltage distortion
CN204886424U (en) System based on power frequency voltage distortion discernment low -voltage distribution family becomes relation
CN103714953A (en) Wireless charging coil
CN202794361U (en) District automatic identification tester
CN105187096A (en) Power line carrier signal coupling circuit
CN204068968U (en) Based on the signal of telecommunication separator of power line carrier
CN202524418U (en) Transmission device for power carrier communication
CN204886948U (en) Power line carrier signals interconnected circuit
CN201774246U (en) Network connection common mode signal protection circuit
CN102629882A (en) Power carrier communication system of cable shielding layer
CN106154123A (en) A kind of distance scene frequency-changing AC pressure test system
CN203747818U (en) Medium-voltage power line carrier communication connection structure based on mixed lines
CN204156855U (en) Carrier communication success rate test macro
CN106685483B (en) System for coupling power distribution station broadband power line carrier zero line
CN102638291A (en) Power carrier communication system of overhead line
CN201608562U (en) Moving die system based on electronic-type mutual inductor
CN202535354U (en) Cable shielding layer electric power carrier communication system
CN202994311U (en) RS-485-bus-based wireless temperature sensor
CN205901734U (en) Bimodulus communication controller
CN201821345U (en) System using ground wires for data transmission
CN204906390U (en) Multinode broadband dc power line carrier communication impedance matching circuit
CN203968116U (en) Joint line carrier communication apparatus
CN102750817A (en) Power data communication transmission system and method
CN202788142U (en) Cross arm of power transmission tower

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120718