CN202261276U - Power line carrier transmission system - Google Patents
Power line carrier transmission system Download PDFInfo
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- CN202261276U CN202261276U CN2011202358272U CN201120235827U CN202261276U CN 202261276 U CN202261276 U CN 202261276U CN 2011202358272 U CN2011202358272 U CN 2011202358272U CN 201120235827 U CN201120235827 U CN 201120235827U CN 202261276 U CN202261276 U CN 202261276U
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- power line
- line carrier
- transmission system
- circuit
- carrier transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 36
- 230000000051 modifying Effects 0.000 claims abstract description 13
- 230000001808 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000003044 adaptive Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 16
- 238000009510 drug design Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The utility model relates to a power line carrier transmission system, which is characterized by comprising a power line carrier modulation circuit, a filter receiving circuit, a sending amplifying circuit and a coupling circuit, wherein the main hardware of the power line carrier modulation circuit is an intelligent modem chip for modulating data information into high-frequency carrier signals transmitted on a power line; and the high-frequency carrier signals are connected with a high-pressure power line through the filter receiving circuit, the sending amplifying circuit and the coupling circuit. The power line carrier transmission system is mainly used for scheduling communication, telecontrol and comprehensive automatic channels which face terminal transformer substations and big consumers and consist of prefecture, municipal or even lower power supply departments. The power line carrier transmission system has a rational design; as the problems of high attenuation, high interference, short communication distance and the like are solved, the functions of the power line carrier transmission system can be realized; and the power line carrier transmission system has the advantages of high-speed data transmission, long communication distance, low running cost, stability, high reliability and the like, cannot be influenced by geomorphology and can be widely applied.
Description
Technical field
The utility model belongs to the carrier transmission technical field, especially a kind of power line carrier transmission system.
Background technology
(Power Line Carrier, PLC) communication is to utilize high-voltage power line (being often referred to 35kV and above electric pressure in the power carrier field), medium voltage power line (referring to the 10kV electric pressure) or low-voltage distribution wire (380V/220V subscribers feeder) to carry out a kind of specific communication mode of voice or transfer of data as information transmitting medium to power line carrier.Electric line carrier communication is meant and utilizes existing power line, through carrier system the analog or digital signal carried out the technology of high-speed transfer, and maximum characteristics are not need to set up again network, as long as live wire just can carry out data passes.Power line carrier technology has been broken through and has been only limited to the restriction that single-chip microcomputer is used; Got into digital times; And along with the continuous development and the needs of society of power line carrier technology, in/technological development of low voltage electric power carrier communication and use and situation in the ascendant also occurred.
Fast development along with power industry; Based on different types of IDE terminal of TCP/IP interface applied more and more in transformer station; The data transmission service of transformer station progressively develops to variation; Except conventional remote action data traffic transmission, the demand of IP transfer of data is begun progressively to increase, like the access of long-range OA system of transformer station, electric energy metrical transmission, the access of long-range settlement system, transformer station's safety monitoring transfer of data, the IE of transformer station visit etc.; The power line carrier transmission is as the long-term private communication mode of using of a kind of electric power system, and the demand that satisfies the data transmission service diversified development of transformer station is necessary.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of high-speed transfer, stable performance, power line carrier transmission system that reliability is high are provided.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of power line carrier transmission system; Its structure comprises power line carrier modulation circuit, filtering receiving circuit, sends amplifying circuit and coupling circuit; The main hardware of power line carrier modulation circuit is intelligent modem chip; Data message is modulated into the high-frequency carrier signal that can on power line, transmit, and these high-frequency carrier signals are through filtering receiving circuit, transmission amplifying circuit and coupling circuit and high-tension electricity line interface.This system is mainly used in dispatching communication, telemechanical and the use of comprehensive automation passage that ground, city-level or following power supply department constitute terminaloriented transformer station and large user, the information of main transmitting and scheduling phone, telemechanical, carrier current protection and other supervisory control system.
And; Described power line carrier transmission system adopts adaptive equalization technique; Comprise automatically, manually, preset, four kinds of set-up modes regularly; Avoid distortion or the distortion that transmission signals produces reducing intersymbol interference as much as possible, tackle the synchronous protection of bursty interference and set up measure fast because the power line carrier hf channel is caused by variations such as the position, adjacency channel carrier equipment of weather, electric network composition, isolating switch.
The advantage and the good effect of the utility model are:
1, this power line carrier transmission system adopts advanced network management technology, realizes measurement, adjustment and storage to the various important parameters of same category of device in the transformer station of local transformer station even the outer far-end of hundreds of kilometer and the carrier transmission net.
2, this power line carrier transmission system adopts effective speech coding compress technique and Digital Multiple Connection Technique, in certain signal to noise ratio and standard bands, realizes the transmission of multi-path voice, data and picture signal.
3, this power line carrier transmission system adopts advanced error correction coding, in the serious situation about existing of the various interference signals of electric power system carrier channel (like impulse type noise, corona discharge noise etc.), can reliably transmit the various signals than low error rate.
4, the utility model is reasonable in design, has solved problems such as high decay, strong jamming, communication distance, makes the power line carrier transmission system can bring into play its effect; Have high-speed data transmission, communication distance is long, does not receive the influence of topography and geomorphology; Small investment, operating cost is low, and is stable; Reliability advantages of higher, but extensive use.
Description of drawings
Fig. 1 is the fundamental diagram of the utility model;
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is done further detailed description:
A kind of power line carrier transmission system; Primary structure comprises power line carrier modulation circuit, filtering receiving circuit, sends amplifying circuit and coupling circuit; The main hardware of power line carrier modulation circuit is intelligent modem chip; Data message is modulated into the high-frequency carrier signal that can on power line, transmit, and these high-frequency carrier signals are through filtering receiving circuit, transmission amplifying circuit and coupling circuit and high-tension electricity line interface.Data or voice are modulated at tens to the carrier frequency of hundreds of KHz, send through power line, receiving terminal receives the carrier wave that is loaded with signal on the power line and carries out demodulation and restore original voice or data.The carrier of communication is ready-made power line; Need not to lay communication line again as wire communication; Also need complicated sending and receiving devices to come transmission information unlike the wireless transmission that kind, it need not to set up extra communication line, does not also take valuable radio spectrum resources.
This system is mainly used in dispatching communication, telemechanical and the use of comprehensive automation passage that ground, city-level or following power supply department constitute terminaloriented transformer station and large user; Comprise interconnecting between local side local area network (LAN) and the transformer station's local area network (LAN), the access of long-range OA system of transformer station, transformer station's electric energy metrical transmission, the long-range settlement system access of business office, transformer station's safety monitoring transfer of data, the IE of transformer station visit, the information of main transmitting and scheduling phone, telemechanical, carrier current protection and other supervisory control system.
It is emphasized that; The described embodiment of the utility model is illustrative; Rather than it is determinate; Therefore the utility model is not limited to the embodiment described in the embodiment, every by those skilled in the art according to other execution modes that the technical scheme of the utility model draws, belong to the scope of the utility model protection equally.
Claims (2)
1. power line carrier transmission system; It is characterized in that: mainly comprise power line carrier modulation circuit, filtering receiving circuit, send amplifying circuit and coupling circuit; The main hardware of power line carrier modulation circuit is intelligent modem chip; Data message is modulated into the high-frequency carrier signal that can on power line, transmit, and these high-frequency carrier signals are through filtering receiving circuit, transmission amplifying circuit and coupling circuit and high-tension electricity line interface.
2. power line carrier transmission system according to claim 1 is characterized in that: described power line carrier transmission system adopts adaptive equalization technique, comprise automatically, manually, preset, four kinds of set-up modes regularly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202358272U CN202261276U (en) | 2011-07-06 | 2011-07-06 | Power line carrier transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202358272U CN202261276U (en) | 2011-07-06 | 2011-07-06 | Power line carrier transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261276U true CN202261276U (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202358272U Expired - Fee Related CN202261276U (en) | 2011-07-06 | 2011-07-06 | Power line carrier transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261276U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023153A (en) * | 2012-12-25 | 2013-04-03 | 余姚市供电局 | Method and system for fault monitoring of power distribution network |
| CN103327508A (en) * | 2013-07-09 | 2013-09-25 | 武汉虹信通信技术有限责任公司 | Access system for transmitting wireless signals and Ethernet signals by power line |
-
2011
- 2011-07-06 CN CN2011202358272U patent/CN202261276U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023153A (en) * | 2012-12-25 | 2013-04-03 | 余姚市供电局 | Method and system for fault monitoring of power distribution network |
| CN103327508A (en) * | 2013-07-09 | 2013-09-25 | 武汉虹信通信技术有限责任公司 | Access system for transmitting wireless signals and Ethernet signals by power line |
| CN103327508B (en) * | 2013-07-09 | 2016-05-11 | 武汉虹信通信技术有限责任公司 | Based on the connecting system of power line transmitting wireless signals and ethernet signal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130706 |