CN103634029A - Broadband power line carrier system suitable for intelligent substation communication and networking method - Google Patents
Broadband power line carrier system suitable for intelligent substation communication and networking method Download PDFInfo
- Publication number
- CN103634029A CN103634029A CN201310624408.1A CN201310624408A CN103634029A CN 103634029 A CN103634029 A CN 103634029A CN 201310624408 A CN201310624408 A CN 201310624408A CN 103634029 A CN103634029 A CN 103634029A
- Authority
- CN
- China
- Prior art keywords
- carrier
- chip
- parts
- signal
- intelligent substation
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a broadband power line carrier system suitable for intelligent substation communication and a networking method, and belongs to the technical field of power line carrier (PLC). The broadband power line carrier system comprises an embedded broadband power line carrier system which comprises an Ethernet part, a PLC modem part, a carrier signal coupling part and a power adapter part, and all the parts are highly integrated on a printed circuit board and are connected in sequence. As an OFDM (orthogonal frequency division multiplexing) modulating mechanism is adopted, so that the advantages and effects of capability of effectively overcoming intersymbol interference, strong antijamming capability, high band use ratio, high communication bandwidth and simple system balance are achieved; an embedded structure is adopted, so that the advantages of simple structure, easiness in extending, convenience in use, safety and reliability are also achieved; the broadband power line carrier system is used for networking in an intelligent substation, so information data transmission between the substation and an uplink information management master station as well as downlink branches of the substation can be completely met, and the intellectualization of the station is realized.
Description
Technical field
The present invention relates to a kind of broadband power carrier system and network-building method that is applicable to intelligent substation communication, belong to PLC technology field.
Background technology
Power carrier (Power Line Carrier; Be called for short: PLC) be the distinctive communication mode of electric power system.Refer to and take power line as transmission medium, utilize ZAP, signal of communication is modulated in electrical network and carries out high-speed transfer, realize in electrical network a kind of communication mode of transmission of information between each node.The maximum feature of power line carrier, PLC is that installation and maintenance are easy without again setting up network, having price lower, and private network communication is easy to expansion, the series of advantages such as transparent transmission.Along with the construction development of intelligent grid, the construction of intelligent substation also in actively pushing forward, but on the one hand because intelligent substation investment is huge, causes construction progress slow, in the construction of intelligent substation, also has some technical problems to need to improve on the other hand.With respect to traditional transformer station, in intelligent substation, various Informationization Equipment is of a great variety, needs the intelligent communication network of high bandwidth, to realize high efficiency of transmission, unified management.Existing carrier wave system is undesirable to the noise processed effect in power line, antijamming capability is not strong, communication reliability is not high, communication bandwidth also cannot meet the growing transmission request message of intelligent substation gradually, and system peripherals device is various, bring complexity and the Cost Problems of many designs to later stage constructing communication network.
Summary of the invention
The invention provides a kind of broadband power carrier system and network-building method that is applicable to intelligent substation communication.Its objective is that the existing power line carrier system antijamming capability of solution is not strong, communication speed is not high, and communication is unreliable, the problem of networking complexity.
The technical solution adopted for the present invention to solve the technical problems is:
Be applicable to the broadband power carrier system of intelligent substation communication, comprise Embedded Broad-band carrier wave system, this system comprises Ethernet parts, PLC modulation /demodulation parts, carrier signal coupling unit and power supply adaptor parts, above-mentioned parts are high to be integrated on printed circuit board and to connect successively.
Described PLC modulation /demodulation parts comprise containing bandwidth carrier chip and front end signal amplification chip; Described bandwidth carrier chip adopts the bandwidth carrier chip of MARVELL company: DSS950X; Described front end signal amplification chip adopts the front end signal amplification chip of MARVELL company: DSS7800; Chip frequency of utilization bandwidth is 2-34MHZ, and modulation system adopts orthogonal frequency division multiplexer (OFDM), and is provided with jtag interface.
Described power supply adaptor parts both can be whole system power supply, can be connected with carrier signal coupling unit again, carrier signal by power line is sent to PLC modulation /demodulation parts, PLC modulation /demodulation parts are reduced to network signal for the signal that comes from power line is carried out to demodulation, by Ethernet parts, transfer to terminal equipment; Otherwise, and the network signal that comes from Ethernet parts is modulated on power line and is transmitted.
Described OFDM modulation system is a kind of multi-carrier modulation, and this mode is divided into many subcarriers that bandwidth is narrower by a carrier wave, and these subcarriers are mutually orthogonal, adopts fast fourier transform that these subcarrier signals are encoded; Subcarrier frequency demultiplexer reverses signal, make it quadrature, for n subcarrier, the character rate of each subcarrier is divided into the 1/n of whole character rate by carrier modulator, thereby this makes to modulate rear character rate and is longer than multidiameter and reduces intersymbol interference (ISI).
Described carrier signal coupling unit is coupler; Described PLC modulation /demodulation parts are power interface.
Described power interface, power supply adaptor parts are connected successively with carrier signal coupling unit coupler; Coupler is connected successively with front end signal amplification chip, bandwidth carrier chip; Bandwidth carrier chip is connected respectively with flash memory, jtag interface parts, reset system parts, LED light; Bandwidth carrier chip is connected successively with Ethernet parts, Ethernet data interface; Said chip and parts are high to be integrated on printed circuit board, and four jiaos of circuit boards are provided with in the just punching of broadband power carrier communication system and the embedded combination of terminal equipment.
Described Ethernet data interface receives the data of sending from transformer station process layer primary equipment, Ethernet data interface in process layer devices Embedded Broad-band carrier wave system is transferred to Ethernet parts again, then by the industrial MII interface of standard, export to bandwidth carrier chip, data in bandwidth carrier chip by data are carried out to serial/parallel conversion, the a series of processing such as D/A switch modulation become OFDM analog signal, by front end signal amplification chip, undertaken after high frequency analog signals amplification and signal filtering, send on carrier signal coupling unit, finally by carrier signal coupling unit, be coupled on the power line of power interface connection, transfer in intelligent substation wall system embedment formula broadband power carrier system,
Intelligent substation bay device Embedded Broad-band carrier wave system receives the OFDM analog signal of coming from power line and transfers to carrier signal coupling unit through power interface, transfer to successively again front end signal amplification chip, after the operation that front end signal amplification chip is correlated with to it, transfer to bandwidth carrier chip, bandwidth carrier chip is transferred to Ethernet parts after data are carried out OFDM demodulation process and changed digital signal into, and Ethernet parts the most at last signal are delivered to bay device by Ethernet data interface;
In like manner, bay device carries out communicating with station level equipment after modulating/demodulating to signal by Embedded Broad-band carrier system; Meanwhile, meanwhile, bandwidth carrier chip is connected with flash memory; Bandwidth carrier chip is connected with jtag interface; Bandwidth carrier chip is connected with reset system parts; Bandwidth carrier chip is connected with LED light.
The model of described flash memory is selected 64Mbit.
Be applicable to the network-building method of the broadband power carrier system of intelligent substation communication, to add respectively and put Embedded Broad-band carrier wave system at process layer devices side, bay device side, station level equipment side, process layer primary equipment image data is modulated to OFDM analog signal injection power line through Embedded Broad-band carrier wave system and transfers to wall Embedded Broad-band carrier wave system, after wall Embedded Broad-band carrier wave system is demodulated into digital signal, transmits and is collected to bay device; In like manner, signal that bay device collects is sent to station level equipment after broadband power carrier system modulating/demodulating.
The invention has the beneficial effects as follows: owing to adopting OFDM modulation scheme, so tool can effectively overcome intersymbol interference, antijamming capability is strong, and band efficiency is high, and communication bandwidth is high the advantageous effect such as the equilibrium of system is simple.Owing to adopting damascene structures, therefore also have simple in structurely, be easy to expansion, easy to use, the advantage such as safe and reliable.In intelligent substation, use J-carrier system networking to meet completely and uplink information management main website, under descending transformer station, branch carries out information data transmission, realizes the intellectuality of transformer station.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is carrier system structural representation of the present invention;
Fig. 2 is networking mode schematic diagram in intelligent substation of the present invention.
In figure: bandwidth carrier chip 1, front end signal amplification chip 2, coupler 3, power interface 4, power supply adaptor parts 5, flash memory 6, Ethernet parts 7, Ethernet data interface 8, JTEG interface unit 9, reset system parts 10, LED light 11.
Embodiment
The present invention is a kind of broadband power carrier system and network-building method that is applicable to intelligent substation communication, this system comprises Embedded Broad-band carrier wave system, it has Ethernet parts, PLC modulation /demodulation parts, carrier signal coupling unit, power supply adaptor parts, above-mentioned parts are high to be integrated on printed circuit board and to connect successively.Described PLC modulation /demodulation parts comprise bandwidth carrier chip 1 and front end signal amplification chip 2.Described power supply adaptor parts 5, both can be whole system power supply, can join with carrier signal coupling unit again, carrier signal by power line is sent to PLC modulation /demodulation parts, PLC modulation /demodulation parts are reduced to network signal for the signal that comes from power line is carried out to demodulation, by Ethernet parts 7, transfer to terminal equipment; Otherwise, and the network signal that comes from Ethernet parts 7 is modulated on power line and is transmitted.
Intelligent substation is divided into process layer, wall and station level.Process layer comprises the primary equipments such as transformer, circuit breaker, isolating switch, current/voltage instrument transformer and affiliated intelligent assembly thereof and smart electronics system independently; Bay device refers generally to the secondary devices such as relaying protection system, system monitoring system, the main IED of monitoring function, realize the data of using an interval and the function that acts on this interval primary equipment, its realization is communicated by letter with controller with various distant places input-output apparatus, transducer; Station level comprises automated station level supervisor control, the territory control of standing, communication system and to time system etc.; realization is towards supervision, control, alarm and the information interaction function of full station equipment, and the correlation functions such as (SCADA), operation locking and synchronous vectorial collection, electric energy acquisition, protection information management are controlled in data acquisition and supervision.
The technical scheme that network-building method of the present invention is realized is: at process layer devices side, bay device side, station level equipment side, add respectively and put Embedded Broad-band carrier wave system, process layer primary equipment image data is modulated to OFDM analog signal injection power line through Embedded Broad-band carrier wave system and transfers to wall Embedded Broad-band carrier wave system, after wall Embedded Broad-band carrier wave system is demodulated into digital signal, transmits and is collected to bay device; In like manner, signal that bay device collects is sent to station level equipment after broadband power carrier system modulating/demodulating.
Wherein, in PLC modulation /demodulation parts, bandwidth carrier chip 1 adopts the DSS950X carrier chip of MARVELL company, front end signal amplification chip 2 adopts the DSS7800 chip of MARVELL company, chip frequency of utilization bandwidth 2-34MHZ, modulation system adopts orthogonal frequency division multiplexer (OFDM), 128 AES of chip internal integrated programmable, 256 AES, with 3DES hardware-based cryptographic, safe and reliable.And be provided with jtag interface, conveniently carry out boundary scan and selftest.Meanwhile, bandwidth carrier communication chip can be realized any width frequency range completely and use, and reaches the controllability of height and the width of frequency range, and for multilink, networking realizes frequency division networking, avoids disturbing between frequency.
OFDM modulation system is a kind of multi-carrier modulation, and this mode is divided into many subcarriers that bandwidth is narrower by a carrier wave, and these subcarriers are mutually orthogonal, adopts fast fourier transform that these subcarrier signals are encoded.Subcarrier frequency demultiplexer reverses signal, make it quadrature, for n subcarrier, the character rate of each subcarrier is divided into the 1/n of whole character rate by carrier modulator, thereby this makes to modulate rear character rate and is longer than multidiameter and reduces intersymbol interference (ISI).
Below in conjunction with accompanying drawing explanation the specific embodiment of the present invention.As shown in Figure 1: power interface 4, power supply adaptor parts 5 are connected successively with carrier signal coupling unit coupler 3, carrier signal coupling unit coupler 3 and front end signal amplification chip 2, bandwidth carrier chip 1 is connected successively, bandwidth carrier chip 1 and flash memory 6, JTEG interface unit 9, reset system parts 10, LED light 11 is connected respectively, bandwidth carrier chip 1 and Ethernet parts 7, Ethernet data interface 8 is connected successively, said chip and parts are high to be integrated on printed circuit board, and four jiaos of circuit boards are provided with punching, facilitate the embedded combination of broadband power carrier communication system and terminal equipment.
The data of sending from transformer station process layer primary equipment, Ethernet data interface 8 in process layer devices Embedded Broad-band carrier wave system is transferred to Ethernet parts 7, then by the industrial MII interface of standard, export to bandwidth carrier chip 1, data in bandwidth carrier chip 1 by data are carried out to serial/parallel conversion, the a series of processing such as D/A switch modulation become OFDM analog signal, by front end signal amplification chip 2, undertaken after high frequency analog signals amplification and signal filtering, send on carrier signal coupling unit coupler 3, finally by carrier signal coupling unit coupler 3, be coupled on the power line of power interface 4 connections, transfer in intelligent substation wall system embedment formula broadband power carrier system.Intelligent substation bay device Embedded Broad-band carrier wave system receives the OFDM analog signal of coming from power line and transfers to carrier signal coupling unit coupler 3 through power interface 4, transfer to successively again front end signal amplification chip 2, after the operation that front end signal amplification chip 2 is correlated with to it, transfer to bandwidth carrier chip 1,1 pair of data of carrier chip are transferred to Ethernet parts 7 after carrying out OFDM demodulation process and changing digital signal into, and Ethernet parts 7 the most at last signal are delivered to bay device by Ethernet data interface 8.In like manner, bay device carries out communicating with station level equipment after modulating/demodulating to signal by Embedded Broad-band carrier system.Meanwhile, bandwidth carrier chip 1 is connected with flash memory 6, is convenient to data to carry out buffer memory; Bandwidth carrier chip 1 is connected with JTEG interface unit 9, is convenient to internal system to debug; Bandwidth carrier chip 1 is connected with reset system parts, is convenient to system to carry out manually resetting operation; Bandwidth carrier chip 1 is connected with LED light 11, is convenient to system mode to monitor.Described flash memory 6 is 64Mbit.
As mentioned above, embodiments of the invention are had been described in detail, but as long as not departing from fact inventive point of the present invention and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection scope of the present invention.
Claims (9)
1. be applicable to the broadband power carrier system of intelligent substation communication, it is characterized in that: comprise Embedded Broad-band carrier wave system, this system comprises Ethernet parts (7), PLC modulation /demodulation parts, carrier signal coupling unit and power supply adaptor parts (5), above-mentioned parts are high to be integrated on printed circuit board and to connect successively.
2. the broadband power carrier system that is applicable to intelligent substation communication according to claim 1, is characterized in that: described PLC modulation /demodulation parts comprise containing bandwidth carrier chip (1) and front end signal amplification chip (2); Described bandwidth carrier chip (1) adopts the bandwidth carrier chip of MARVELL company: DSS950X; Described front end signal amplification chip (2) adopts the front end signal amplification chip of MARVELL company: DSS7800; Chip frequency of utilization bandwidth is 2-34MHZ, and modulation system adopts orthogonal frequency division multiplexer (OFDM), and is provided with jtag interface.
3. the broadband power carrier system that is applicable to intelligent substation communication according to claim 1, it is characterized in that: described power supply adaptor parts (5) both can be whole system power supply, can be connected with carrier signal coupling unit again, carrier signal by power line is sent to PLC modulation /demodulation parts, PLC modulation /demodulation parts are reduced to network signal for the signal that comes from power line is carried out to demodulation, by Ethernet parts (7), transfer to terminal equipment; Otherwise, and the network signal that comes from Ethernet parts (7) is modulated on power line and is transmitted.
4. the broadband power carrier system that is applicable to intelligent substation communication according to claim 2, it is characterized in that: described OFDM modulation system is a kind of multi-carrier modulation, this mode is divided into many subcarriers that bandwidth is narrower by a carrier wave, these subcarriers are mutually orthogonal, adopt fast fourier transform that these subcarrier signals are encoded; Subcarrier frequency demultiplexer reverses signal, make it quadrature, for n subcarrier, the character rate of each subcarrier is divided into the 1/n of whole character rate by carrier modulator, thereby this makes to modulate rear character rate and is longer than multidiameter and reduces intersymbol interference (ISI).
5. the broadband power carrier system that is applicable to intelligent substation communication according to claim 1, is characterized in that: described carrier signal coupling unit is coupler (3); Described PLC modulation /demodulation parts are power interface (4).
6. according to claim 1 and the broadband power carrier system that intelligent substation is communicated by letter that is applicable to described in 5, it is characterized in that: described power interface (4), power supply adaptor parts (5) are connected successively with carrier signal coupling unit coupler (3); Coupler (3) is connected successively with front end signal amplification chip (2), bandwidth carrier chip (1); Bandwidth carrier chip (1) is connected respectively with flash memory (6), jtag interface parts (9), reset system parts (10), LED light (11); Bandwidth carrier chip (1) is connected successively with Ethernet parts (7), Ethernet data interface (8); Said chip and parts are high to be integrated on printed circuit board, and four jiaos of circuit boards are provided with in the just punching of broadband power carrier communication system and the embedded combination of terminal equipment.
7. the broadband power carrier system that is applicable to intelligent substation communication according to claim 6, it is characterized in that: described Ethernet data interface (8) receives the data of sending from transformer station process layer primary equipment, Ethernet data interface (8) in process layer devices Embedded Broad-band carrier wave system is transferred to Ethernet parts (7) again, then by the industrial MII interface of standard, export to bandwidth carrier chip (1), data in bandwidth carrier chip (1) by data are carried out to serial/parallel conversion, the a series of processing such as D/A switch modulation become OFDM analog signal, by front end signal amplification chip (2), undertaken after high frequency analog signals amplification and signal filtering, send on carrier signal coupling unit, finally by carrier signal coupling unit, be coupled on the power line of power interface (4) connection, transfer in intelligent substation wall system embedment formula broadband power carrier system,
Intelligent substation bay device Embedded Broad-band carrier wave system receives the OFDM analog signal of coming from power line and transfers to carrier signal coupling unit through power interface (4), transfer to successively again front end signal amplification chip (2), after the operation that front end signal amplification chip (2) is correlated with to it, transfer to bandwidth carrier chip (1), bandwidth carrier chip (1) is transferred to Ethernet parts (7) after data are carried out OFDM demodulation process and changed digital signal into, Ethernet parts (7) the most at last signal are delivered to bay device by Ethernet data interface (8),
In like manner, bay device carries out communicating with station level equipment after modulating/demodulating to signal by Embedded Broad-band carrier system; Meanwhile, meanwhile, bandwidth carrier chip (1) is connected with flash memory (6); Bandwidth carrier chip (1) is connected with jtag interface (9); Bandwidth carrier chip (1) is connected with reset system parts (10); Bandwidth carrier chip (1) is connected with LED light (11).
8. the broadband power carrier system that is applicable to intelligent substation communication according to claim 6, is characterized in that: the model of described flash memory (6) is selected 64Mbit.
9. be applicable to the network-building method of the broadband power carrier system of intelligent substation communication, it is characterized in that: at process layer devices side, bay device side, station level equipment side, add respectively and put Embedded Broad-band carrier wave system, process layer primary equipment image data is modulated to OFDM analog signal injection power line through Embedded Broad-band carrier wave system and transfers to wall Embedded Broad-band carrier wave system, after wall Embedded Broad-band carrier wave system is demodulated into digital signal, transmits and is collected to bay device; In like manner, signal that bay device collects is sent to station level equipment after broadband power carrier system modulating/demodulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624408.1A CN103634029B (en) | 2013-11-29 | 2013-11-29 | Be applicable to broadband power line carrier system and the network-building method of intelligent substation communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624408.1A CN103634029B (en) | 2013-11-29 | 2013-11-29 | Be applicable to broadband power line carrier system and the network-building method of intelligent substation communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103634029A true CN103634029A (en) | 2014-03-12 |
| CN103634029B CN103634029B (en) | 2015-11-25 |
Family
ID=50214714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310624408.1A Active CN103634029B (en) | 2013-11-29 | 2013-11-29 | Be applicable to broadband power line carrier system and the network-building method of intelligent substation communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103634029B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207697A (en) * | 2015-08-28 | 2015-12-30 | 北京泰豪电力科技有限公司 | Broadband carrier communication module of power line |
| CN107590986A (en) * | 2017-09-27 | 2018-01-16 | 广东电网有限责任公司应急抢修中心 | A kind of electric power data acquisition system based on bandwidth carrier |
| CN107769818A (en) * | 2017-10-11 | 2018-03-06 | 北京电联宇科技股份有限公司 | A kind of broadband power carrier method and device |
| CN110048744A (en) * | 2018-01-16 | 2019-07-23 | 北京航天长征飞行器研究所 | A kind of power supply adaptor of power wire broadband carrier communication |
| CN110687368A (en) * | 2019-07-16 | 2020-01-14 | 深圳智微电子科技有限公司 | OFDM carrier signal-based transformer state online monitoring system and method |
| CN111835384A (en) * | 2020-07-27 | 2020-10-27 | 珠海格力电器股份有限公司 | Power line carrier communication power module, power line carrier communication cable and magnetic suspension motor system |
| CN112564281A (en) * | 2020-12-01 | 2021-03-26 | 广东电网有限责任公司江门供电局 | Monitoring background signal remote transmission device for transformer substation |
| CN113315544A (en) * | 2020-02-27 | 2021-08-27 | 山东亚华电子股份有限公司 | Wiring system and method based on hospital informatization |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201557111U (en) * | 2009-06-12 | 2010-08-18 | 贵州天能电力高科技有限公司 | Broadband network communication device for medium voltage power line |
| CN101931435A (en) * | 2010-07-30 | 2010-12-29 | 北京航空航天大学 | Low-voltage power line bandwidth carrier concentrator |
| CN102111989A (en) * | 2009-12-28 | 2011-06-29 | 株式会社日立高新技术仪器 | Installation method of electronic element |
| CN102111189A (en) * | 2011-04-11 | 2011-06-29 | 福建省电力有限公司宁德电业局 | Long-distance high-speed broadband power line communication method |
| CN102163994A (en) * | 2011-04-20 | 2011-08-24 | 杭州再灵电子科技有限公司 | Power line carrier modem based on TR-069 protocol |
| CN103001319A (en) * | 2011-09-08 | 2013-03-27 | 湖南省电力勘测设计院 | Integrated intelligent component |
-
2013
- 2013-11-29 CN CN201310624408.1A patent/CN103634029B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201557111U (en) * | 2009-06-12 | 2010-08-18 | 贵州天能电力高科技有限公司 | Broadband network communication device for medium voltage power line |
| CN102111989A (en) * | 2009-12-28 | 2011-06-29 | 株式会社日立高新技术仪器 | Installation method of electronic element |
| CN101931435A (en) * | 2010-07-30 | 2010-12-29 | 北京航空航天大学 | Low-voltage power line bandwidth carrier concentrator |
| CN102111189A (en) * | 2011-04-11 | 2011-06-29 | 福建省电力有限公司宁德电业局 | Long-distance high-speed broadband power line communication method |
| CN102163994A (en) * | 2011-04-20 | 2011-08-24 | 杭州再灵电子科技有限公司 | Power line carrier modem based on TR-069 protocol |
| CN103001319A (en) * | 2011-09-08 | 2013-03-27 | 湖南省电力勘测设计院 | Integrated intelligent component |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207697A (en) * | 2015-08-28 | 2015-12-30 | 北京泰豪电力科技有限公司 | Broadband carrier communication module of power line |
| CN107590986A (en) * | 2017-09-27 | 2018-01-16 | 广东电网有限责任公司应急抢修中心 | A kind of electric power data acquisition system based on bandwidth carrier |
| CN107769818A (en) * | 2017-10-11 | 2018-03-06 | 北京电联宇科技股份有限公司 | A kind of broadband power carrier method and device |
| CN107769818B (en) * | 2017-10-11 | 2021-02-19 | 北京电联宇科技股份有限公司 | Broadband power carrier processing method and device |
| CN110048744A (en) * | 2018-01-16 | 2019-07-23 | 北京航天长征飞行器研究所 | A kind of power supply adaptor of power wire broadband carrier communication |
| CN110687368A (en) * | 2019-07-16 | 2020-01-14 | 深圳智微电子科技有限公司 | OFDM carrier signal-based transformer state online monitoring system and method |
| CN110687368B (en) * | 2019-07-16 | 2022-03-25 | 深圳智微电子科技有限公司 | OFDM carrier signal-based transformer state online monitoring method |
| CN113315544A (en) * | 2020-02-27 | 2021-08-27 | 山东亚华电子股份有限公司 | Wiring system and method based on hospital informatization |
| CN113315544B (en) * | 2020-02-27 | 2023-02-17 | 山东亚华电子股份有限公司 | Wiring system and method based on hospital informatization |
| CN111835384A (en) * | 2020-07-27 | 2020-10-27 | 珠海格力电器股份有限公司 | Power line carrier communication power module, power line carrier communication cable and magnetic suspension motor system |
| CN112564281A (en) * | 2020-12-01 | 2021-03-26 | 广东电网有限责任公司江门供电局 | Monitoring background signal remote transmission device for transformer substation |
| CN112564281B (en) * | 2020-12-01 | 2023-03-21 | 广东电网有限责任公司江门供电局 | Monitoring background signal remote transmission device for transformer substation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103634029B (en) | 2015-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103634029B (en) | Be applicable to broadband power line carrier system and the network-building method of intelligent substation communication | |
| CN203339729U (en) | Photovoltaic power generation unit and photovoltaic power generation system | |
| CN201557111U (en) | Broadband network communication device for medium voltage power line | |
| CN107623534B (en) | Power monitoring system and method for remote area | |
| CN207780950U (en) | A kind of GPRS signal forwarding units of power line network | |
| CN106935022A (en) | A kind of wideband power carrier communication kilowatt meter reading-out system | |
| CN103607223A (en) | Embedded type broadband power line carrier communication system based on OFDM modulation | |
| CN104883632A (en) | Device and method for realizing VDSL current sharing backward feeding in PON far-end system | |
| CN208027556U (en) | A kind of power wire broadband carrier kilowatt meter reading-out system | |
| CN105656517B (en) | Island information transmission measurement and control system | |
| CN202535354U (en) | Cable shielding layer electric power carrier communication system | |
| CN201821345U (en) | System using ground wires for data transmission | |
| CN206961309U (en) | A kind of wideband power carrier meter reading system | |
| CN202261286U (en) | Self-adaptive modulator-demodulator on basis of time diversity | |
| CN202331792U (en) | Data collection transmission system for transformer substation | |
| CN211860097U (en) | Communication system from hub to engine room of wind generating set | |
| CN203590221U (en) | OFDM modulation embedded type broadband power line carrier communication system | |
| CN106788597B (en) | OLT system based on power line transmission and its adjustment method | |
| CN209218138U (en) | It is a kind of wirelessly to match electricity automation information acquisition system | |
| CN107026677A (en) | A kind of ammeter network and its communication means based on three-phase electricity | |
| CN205792579U (en) | A kind of group network system using spark gap to press communication in realizing | |
| CN203327000U (en) | OFDM technology-based power line carrier wave apparatus | |
| CN205792578U (en) | A kind of system using spark gap to press communication in realizing | |
| CN204205718U (en) | Possesses the circuit breaker system of remote information statistics | |
| CN106059626B (en) | It is a kind of using arrester realize in press the network-building method of communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |