CN201937579U - Power grid communication system based on medium-voltage PLC technology - Google Patents
Power grid communication system based on medium-voltage PLC technology Download PDFInfo
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- CN201937579U CN201937579U CN2010206872519U CN201020687251U CN201937579U CN 201937579 U CN201937579 U CN 201937579U CN 2010206872519 U CN2010206872519 U CN 2010206872519U CN 201020687251 U CN201020687251 U CN 201020687251U CN 201937579 U CN201937579 U CN 201937579U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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Abstract
A power grid communication system based on the medium-voltage PLC (Power Line Carrier) technology comprises a local master station, a transformer station carrier master station and at least one carrier slave station. The local master station comprises a work station and a server connected with each other, wherein the server is connected with an optical transcerver of the local master station via an optical Modem of the local master station; and the local master station starts a measurement call and sends a measurement call command to the transformer station carrier master station. The transformer station carrier master station comprises an optical transcerver, an optical Modem and a master station carrier, wherein the optical transcerver is connected with the master station carrier via the optical Modem; the optical transcerver is connected with the transcerver of the local master station; and the master station carrier receives and converts the measurement call command into carrier signals, couples the carrier signals on a cable outgoing line, and transmits the carrier signals to the carrier slave stations. The at least one carrier slave station comprises a transformer, an electrical distribution acquisition device, a slave station carrier and a filter device, wherein the electrical distribution acquisition device acquires the measurement call command from the output line of a transformer and forwards the measurement call command to the slave station carriers.
Description
Technical field
The utility model relates to a kind of power network communication system based on the medium voltage electricity ZAP.
Background technology
Along with further going deep into of power system reform, the commercial running of power system management and running, market-oriented degree are strengthened day by day, the automaticity of power distribution network is more and more high, and projects such as negative keyholed back plate reason, the management of platform district, kilowatt meter reading-out system, idle switching, low pressure kilowatt meter reading-out system spread all over power distribution network.
The thing followed is exactly management, maintenance, upgrading of each system or the like work, wherein the amount of investment maximum, the most complicated be exactly channel part.The power distribution automation part depends on the automatization level that scale, complexity and the expection of distribution network automated project reach to the requirement of communication system.Distribution network automated generally speaking project to the requirement of communication system following some: requirements such as the property easy to maintenance of the use of communication reliability, construction cost, traffic rate, two-way communications capabilities, communication system.
The whole province is just reducing line loss in widely used load management system at present, the aspect of increasing economic efficiency is to perform meritorious deeds never to be obliterated, yet promulgation along with State Grid Corporation of China's " 05 edition load control stipulations ", the amount of information that system will gather suddenly strengthens, and the present like this means of communication of taking just makes the real-time of gathering that certain delay arranged.So it is necessary fully taking new means of communication, the 10KV power line carrier is exactly a desirable means of communication.Power-line carrier communication all has the networking mode of self uniqueness, and hiving off by frequency is a kind of communication plan that meets the carrier line limited resources.The networking mode of carrier wave is " pyramid " or the network topology model that claims " tree structure ", communication between the upper and lower and control process can be carried out parallel processing, the electrical network of complexity is adopted the notion of " subgroup ", improved the ageing of transfer of data, eliminate the transfer of data bottleneck effectively, and helped the quick diagnosis of Network Transmission fault point.
Therefore, active adoption advanced person's information acquiring technology, network technology, decision support technique, performance each side advantage, set up to high starting point some demonstration projects, the low-level repetition of avoiding existing is at present developed, and has crucial strategic importance for the great-leap-forward development that promotes electric power information.
Overcome all difficulty of carrier signal when 10KV transmits as the structure more complicated of power distribution network, the T contact is numerous, and the line construction change is bigger, can not use trap, and the randomness of line load switching causes the randomness of signal attenuation very big etc.
The utility model content
The purpose of this utility model provides a kind of power network the whole network need not wave arrestment, the fairly simple power network communication system based on the medium voltage electricity ZAP of carrier channel.
For achieving the above object, the utility model is by the following technical solutions: it comprises:
The main website of office, it is made up of interconnective work station and server, and described server is by main website of the light Modem of main website of office connection office optical transceiver; The survey process is called in the startup of main website of described office together, and sends to call together to survey and order the carrier wave main website to transformer station;
Carrier wave main website of transformer station, it is made up of transformer station's optical transceiver, the light Modem of transformer station and main website carrier terminal equipment, and described transformer station optical transceiver connects the main website carrier terminal equipment by the light Modem of transformer station; Wherein, main website of optical transceiver connection office of transformer station optical transceiver, main website carrier terminal equipment receive after calling together of innings main website survey order, are converted into carrier signal and are coupled on the cable outlet, send the carrier wave slave station to;
At least one carrier wave slave station, it is made up of transformer, distribution harvester, slave station carrier terminal equipment and filter; Described distribution harvester obtains to call together from the transformer outlet line and surveys order and be transmitted to the slave station carrier terminal equipment, the slave station carrier terminal equipment is surveyed order and is resolved back output response message calling together, and this response message send back to drawn game main website of carrier wave main website of transformer station after the filtering of wave apparatus after filtration.
Described main website carrier terminal equipment and slave station carrier terminal equipment include:
Collection of letters filter carries out Filtering Processing with the survey order of calling together of receiving;
Transmitting filter carries out Filtering Processing to the response message that is about to send;
Power amplifier module, it carries out power amplification to the response message that is about to send;
The modulation module is carried out the DPSK coding-decoding operation to calling the response message of surveying order and being about to send together;
Digital signal processing module, it is called together after to modulation and surveys order and response message is handled; And digital signal processing module communicates by interface circuit and host computer.
Described interface circuit comprises RS232 interface circuit and RS485 interface circuit.
Described digital signal processing module also is connected with watchdog module.
Each carrier wave slave station also is connected with at least one substation.
In described distribution harvester, inductive coupler is coupled on the cable shield.
Adopt the utility model of technique scheme, DLC-2100 power line CDMA digital ZAP adopts the DPSK modulation technique, and the whole network need not wave arrestment, carrier channel is fairly simple, includes only: DLC-2100 wave carrier communication machine, Coupling device (coupling capacitance, coupling inductance), distribution line; In addition, because transmitting power is little, so the receiving sensitivity height is also lower to the requirement of Coupling device.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model;
Fig. 2 is the theory diagram of the utility model main website carrier terminal equipment and slave station carrier terminal equipment.
Fig. 3 is the structure chart of the utility model distribution harvester.
Embodiment
As shown in Figure 1, the utility model transmits the data communication mode for utilizing 10KV supply line, and the power distribution network main website uses poll and communicating terminal to carry out communication, adopts answer-mode to finish.The utility model is made of main website of office, carrier wave main website of transformer station, at least one carrier wave slave station three part, its describe particularly and communication process as follows.
The main website of office is made up of interconnective work station and server, and above-mentioned server is by main website of the light Modem of main website of office connection office optical transceiver.Main website of office front end processor starts calls the survey process together, sends to call together and surveys order, and be sent to carrier wave main website of corresponding transformer station by optical sender by optical-fibre channel.
Carrier wave main website of transformer station is made up of transformer station's optical transceiver, the light Modem of transformer station and main website carrier terminal equipment.Above-mentioned transformer station's optical transceiver connects the main website carrier terminal equipment by the light Modem of transformer station; Wherein, main website of optical transceiver connection office of transformer station optical transceiver, main website carrier terminal equipment receive after calling together of innings main website survey order, are converted into carrier signal and are coupled on the cable outlet, send the carrier wave slave station to.
At least one carrier wave slave station, it is made up of transformer T, distribution harvester, slave station carrier terminal equipment and filter F.Above-mentioned distribution harvester obtains to call together from the transformer outlet line and surveys order and be transmitted to the slave station carrier terminal equipment, in the slave station carrier terminal equipment acquisition terminal is set, this acquisition terminal is exported response message to calling together to survey after order is resolved, this response message changes carrier signal in the slave station carrier terminal equipment, and then send back to drawn game main website of carrier wave main website of transformer station after the filtering of wave apparatus F0 after filtration.Above-mentioned carrier wave slave station can be set according to local actual situation, is illustrated in figure 1 as three carrier wave slave stations, can certainly be five, ten or even more a plurality of.Need to prove, adopt time-multiplexed mode sharing channel resource between the carrier terminal equipment in each carrier wave slave station.In addition, each carrier wave slave station can also be connected with a plurality of substations, and the substation is as subordinate's communication unit of carrier wave slave station, can make things convenient for this to call together and survey order and be issued to littler, electrical network department more specifically.
After main website carrier terminal equipment in the carrier wave main website of transformer station is received up response message, response message after digital-to-analogue conversion, is become light signal to the signal of telecommunication by optical sender, send an innings main website back to by optical-fibre channel again.
After office's main website optical receiver is received response message, deliver to the main website front end processor after becoming the signal of telecommunication, front end processor is delivered to main frame to signal and is handled, and background computer shows, calls the survey process together and finishes.
As shown in Figure 2, above-mentioned main website carrier terminal equipment and slave station carrier terminal equipment include collection of letters filter, transmitting filter, power amplifier module, modulation module, digital signal processing module and watchdog module.Wherein, Filtering Processing is carried out in the survey order of calling together that collection of letters filter will be received; The modulation module is surveyed order and is carried out the DPSK modulation filtered calling together, and the whole network need not wave arrestment like this, and carrier channel is fairly simple.Then, digital signal processing module calling together after to modulation surveyed order and handled, and above-mentioned processing comprises the error correction that interweaves, equilibrium ratio or the like, and above-mentioned processing procedure is technology well known to those of ordinary skill in the art.And digital signal processing module communicates by interface circuit and host computer, and host computer can be acquisition terminal equipment, and interface circuit comprises RS232 interface circuit and RS485 interface circuit.Acquisition terminal is handled the back by analysis and is replied response message, this response message is at first delivered to digital signal processing module by RS232 interface circuit or RS485 interface circuit and is handled, carry out demodulation by the modulation module then, then carry out power amplifier by power amplifier module, after transmitting filter carries out filtering, so that carrier signal is avoided the interference of extraneous clutter in transmission course.Need to prove also be furnished with watchdog module in the utility model, it can reset to carrier terminal equipment when carrier signal is subjected to extraneous serious interference by force.
As shown in Figure 3, in distribution harvester of the present utility model, inductive coupler is coupled on the cable shield 2.In general, 10KV power transmission cable 1 is made of screen 2, insulating barrier 3 and inner core 4 from outside to inside successively.This inductive coupler 5 is installed on the electric pole, and its high-pressure side is connected with B on the 10KV circuit 1.Use 16MM
2Aluminum core line one end be connected on the B phase line, the other end is screwed in the high pressure port of Coupling device with screw.Channel line is drawn by the cable port of Coupling device, is connected to the loaded termination case, and the setting height(from bottom) of integrated Coupling device should be installed height a bit as far as possible under the prerequisite of safety.Need to prove that the earth terminal of integrated Coupling device must good earth.
Claims (6)
1. power network communication system based on the medium voltage electricity ZAP is characterized in that it comprises:
The main website of office, it is made up of interconnective work station and server, and described server is by main website of the light Modem of main website of office connection office optical transceiver; The survey process is called in the startup of main website of described office together, and sends to call together to survey and order the carrier wave main website to transformer station;
Carrier wave main website of transformer station, it is made up of transformer station's optical transceiver, the light Modem of transformer station and main website carrier terminal equipment, and described transformer station optical transceiver connects the main website carrier terminal equipment by the light Modem of transformer station; Wherein, main website of optical transceiver connection office of transformer station optical transceiver, main website carrier terminal equipment receive after calling together of innings main website survey order, are converted into carrier signal and are coupled on the cable outlet, send the carrier wave slave station to;
At least one carrier wave slave station, it is made up of transformer, distribution harvester, slave station carrier terminal equipment and filter; Described distribution harvester obtains to call together from the transformer outlet line and surveys order and be transmitted to the slave station carrier terminal equipment, the slave station carrier terminal equipment is surveyed order and is resolved back output response message calling together, and this response message send back to drawn game main website of carrier wave main website of transformer station after the filtering of wave apparatus after filtration.
2. the power network communication system based on the medium voltage electricity ZAP according to claim 1 is characterized in that, described main website carrier terminal equipment and slave station carrier terminal equipment include:
Collection of letters filter carries out Filtering Processing with the survey order of calling together of receiving;
Transmitting filter carries out Filtering Processing to the response message that is about to send;
Power amplifier module, it carries out power amplification to the response message that is about to send;
The modulation module is carried out the DPSK coding-decoding operation to calling the response message of surveying order and being about to send together;
Digital signal processing module, it is called together after to modulation and surveys order and response message is handled; And digital signal processing module communicates by interface circuit and host computer.
3. the power network communication system based on the medium voltage electricity ZAP according to claim 2 is characterized in that: described interface circuit comprises RS232 interface circuit and RS485 interface circuit.
4. the power network communication system based on the medium voltage electricity ZAP according to claim 2, it is characterized in that: described digital signal processing module also is connected with watchdog module.
5. according to the arbitrary described power network communication system based on the medium voltage electricity ZAP of claim 1～4, it is characterized in that: each carrier wave slave station also is connected with at least one substation.
6. the power network communication system based on the medium voltage electricity ZAP according to claim 1 is characterized in that: in described distribution harvester, inductive coupler is coupled on the cable shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206872519U CN201937579U (en) | 2010-12-29 | 2010-12-29 | Power grid communication system based on medium-voltage PLC technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206872519U CN201937579U (en) | 2010-12-29 | 2010-12-29 | Power grid communication system based on medium-voltage PLC technology |
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| Publication Number | Publication Date |
|---|---|
| CN201937579U true CN201937579U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206872519U Expired - Fee Related CN201937579U (en) | 2010-12-29 | 2010-12-29 | Power grid communication system based on medium-voltage PLC technology |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102663867A (en) * | 2012-04-17 | 2012-09-12 | 国网电力科学研究院 | Real-time antitheft monitoring method for cables based on medium voltage power line shielding layer carrier |
| CN102820705A (en) * | 2012-08-01 | 2012-12-12 | 大连易联科信息技术有限公司 | Intelligent broadband communication system based on power carrier transformer substation |
| CN103227507A (en) * | 2013-04-08 | 2013-07-31 | 江苏省电力公司苏州供电公司 | Method and device for controlling radio load of power load management system |
| CN105551223A (en) * | 2016-01-29 | 2016-05-04 | 青岛鼎信通讯股份有限公司 | Concentrated meter-reading terminal uplink communication system based on medium-voltage carrier and wireless communication |
| CN107800463A (en) * | 2016-09-02 | 2018-03-13 | 富士施乐株式会社 | signal transmission apparatus and image forming apparatus |
-
2010
- 2010-12-29 CN CN2010206872519U patent/CN201937579U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102663867A (en) * | 2012-04-17 | 2012-09-12 | 国网电力科学研究院 | Real-time antitheft monitoring method for cables based on medium voltage power line shielding layer carrier |
| CN102663867B (en) * | 2012-04-17 | 2014-10-01 | 国网电力科学研究院 | Real-time antitheft monitoring method for cables based on medium voltage power line shielding layer carrier |
| CN102820705A (en) * | 2012-08-01 | 2012-12-12 | 大连易联科信息技术有限公司 | Intelligent broadband communication system based on power carrier transformer substation |
| CN103227507A (en) * | 2013-04-08 | 2013-07-31 | 江苏省电力公司苏州供电公司 | Method and device for controlling radio load of power load management system |
| CN105551223A (en) * | 2016-01-29 | 2016-05-04 | 青岛鼎信通讯股份有限公司 | Concentrated meter-reading terminal uplink communication system based on medium-voltage carrier and wireless communication |
| CN107800463A (en) * | 2016-09-02 | 2018-03-13 | 富士施乐株式会社 | signal transmission apparatus and image forming apparatus |
| CN107800463B (en) * | 2016-09-02 | 2021-07-02 | 富士胶片商业创新有限公司 | Signal transmission apparatus and image forming apparatus |
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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: 20110817 Termination date: 20111229 |