CN202524418U - Transmission device for power carrier communication - Google Patents
Transmission device for power carrier communication Download PDFInfo
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- CN202524418U CN202524418U CN2012201367724U CN201220136772U CN202524418U CN 202524418 U CN202524418 U CN 202524418U CN 2012201367724 U CN2012201367724 U CN 2012201367724U CN 201220136772 U CN201220136772 U CN 201220136772U CN 202524418 U CN202524418 U CN 202524418U
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- power line
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- line carrier
- coaxial cable
- carrier communication
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Abstract
The utility model discloses a transmission device for power carrier communication. The device comprises a power line carrier communication concentrator connected with a power carrier signal transmission device connected with a power line carrier communication collector. The power carrier signal transmission device comprises a main impedance matching converter connected with the power line carrier communication concentrator. The main impedance matching converter is in series connection with at least two coaxial cable splitters through coaxial cables. Branch output terminals of the coaxial cable splitters are connected with sub impedance matching converters through coaxial cables. The sub impedance matching converters are connected with the power line carrier communication collector. The impedance matching converters can change the impedance of the power carrier signals so as to realize the impedance transmission matching of the power carrier signals, and the power carrier signals are transmitted by the coaxial cables and the coaxial cable splitters so that the transmission distance as well as the stability, security and lightning stroke immunity of the power carrier communication are improved, thereby providing accurate power consumption information for the upper layer power control center.
Description
Technical field
The utility model relates to a kind of electricity consumption communications device, relates 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
The utility model technical problem to be solved 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; The technical scheme of the utility model 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 beneficial effect of the utility model is: 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 utility model embodiment;
Fig. 2 is the structure principle chart of the utility model embodiment master impedance converter;
Fig. 3 is the structure principle chart that the utility model embodiment divides 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 utility model.In the detailed description below, some example embodiment of the utility model has only been described through the mode of explanation.Undoubtedly, those of ordinary skill in the art can recognize, under the situation of spirit that does not depart from the utility model and scope, 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 the specification requirement of the utility model.
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 utility model 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 utility model 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 the advantage of basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201367724U CN202524418U (en) | 2012-04-01 | 2012-04-01 | Transmission device for power carrier communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201367724U CN202524418U (en) | 2012-04-01 | 2012-04-01 | Transmission device for power carrier communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202524418U true CN202524418U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201367724U Expired - Fee Related CN202524418U (en) | 2012-04-01 | 2012-04-01 | Transmission device for power carrier communication |
Country Status (1)
| Country | Link |
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| CN (1) | CN202524418U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594411A (en) * | 2012-04-01 | 2012-07-18 | 潍坊开发区蓝岭科学研究中心 | Transmission device for power line carrier communication |
| CN113037331A (en) * | 2021-03-04 | 2021-06-25 | 电子科技大学成都学院 | Carrier information enhancement method used between interactive devices in power distribution network |
-
2012
- 2012-04-01 CN CN2012201367724U patent/CN202524418U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594411A (en) * | 2012-04-01 | 2012-07-18 | 潍坊开发区蓝岭科学研究中心 | Transmission device for power line carrier communication |
| CN113037331A (en) * | 2021-03-04 | 2021-06-25 | 电子科技大学成都学院 | Carrier information enhancement method used between interactive devices in power distribution network |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |