CN201681481U - Distribution network meter reading system - Google Patents
Distribution network meter reading system Download PDFInfo
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- CN201681481U CN201681481U CN2009202470716U CN200920247071U CN201681481U CN 201681481 U CN201681481 U CN 201681481U CN 2009202470716 U CN2009202470716 U CN 2009202470716U CN 200920247071 U CN200920247071 U CN 200920247071U CN 201681481 U CN201681481 U CN 201681481U
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- 239000000284 extract Substances 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 13
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model relates to a low voltage 220V user meter data centralized reading system, which is based on multipath parallel power frequency communication technology, and comprises a primary station, a distribution concentrator, a collector and a user metering electric meter, wherein the primary station and the distribution concentrator are mutually connected in a remote communication mode, and the distribution concentrator and the collector are mutually connected in a multipath power frequency communication mode. The utility model adopts a unique power frequency communication technology which adopts multipath transmission and current pulse receiving process, and the distribution concentrator can read a large quantity of decentralized low voltage user meters of the same distribution transformer. The power frequency signal of a system does not need to penetrate the transformer to transmit, so the utility model is stable and reliable, can eliminate the influence of system operation on electricity quality, can complete the real-timely reading of the user meters, and also can calculate and statistical analyze low voltage line damage.
Description
Technical field:
The utility model relates to a kind of kilowatt meter reading-out system of electric power network, is specifically related to a kind of low pressure 220V electric supply meter data centralization kilowatt meter reading-out system based on multidiameter delay frequency communication technology.
Background technology:
Electric supply meter data centralization kilowatt meter reading-out system is based on the main application fields of the communication technology of line of electric force, at present, the communication technology based on line of electric force has arrowband power line carrier communication, broadband power line carrier communication, audio frequency pulsation carrier communication, super arrowband power line carrier communication and frequency communication.Several technology are compared, and the principal feature of present existing frequency communication technology is that reliability is higher, and cost is low, but traffic rate is lower.Present frequency communication technology has two kinds of application models, and a kind of is that signal of communication penetrates the transformer transmission, and communication is based upon between terminal user transformer station and the low-voltage power user, need transform transformer station when this technology is used, and increases the engineering construction difficulty; Another kind is that signal of communication need not penetrate the transformer transmission, and communication is based upon between substation transformer platform district and the low-voltage power user, and this method construction is simple, and can adopt the subregion networking to improve system communication speed.
There is following some problem in the present power distribution station kilowatt meter reading-out system based on the frequency communication technology: (1) does not penetrate the frequency communication technology of transformer transmission for present existing signal, though its upward signal can transmit on A, B, C three-phase 220V low-voltage power supply line simultaneously, but can't realize that 6 collectors are communicated by letter with the distribution transforming concentrator simultaneously on the single-phase 220V low-voltage power supply line, can not realize that 18 collectors are communicated by letter simultaneously with concentrator on the three-phase 220V low-voltage power supply line.(2) do not penetrate the frequency communication technology that transformer transmits for present existing signal, its upward signal adopts the voltage-type signal, can not utilize low voltage power distribution network to improve the upward signal traffic rate, and exist signal between adjacent distribution transformer, to harass and the problem of phase mutual interference in the characteristics that substation transformer exports radial wiring.(3) during frequency communication, no matter be the mode that signal penetrates substation transformer, or signal does not penetrate the mode of substation transformer, and its collector modulating current peak value causes harmonic pollution all greater than 20A to low pressure 220V electrical network.
The utility model content:
The utility model purpose is, design a kind of electric supply meter data centralization kilowatt meter reading-out system based on low-voltage power line, this system can overcome that existing frequency communication system transmissions speed is low, signal is striden the problem that transformer is crosstalked, the multi-user's ammeter data that is implemented in the same station power distribution transformer platform district scope concentrates collection to copy and accept, particularly the data transmission of this kilowatt meter reading-out system is based on the low-voltage network frequency communication, and has adopted multipath transmission and current impulse reception technique.
For achieving the above object, the utility model provides a kind of power distribution station kilowatt meter reading-out system, its improvement is: this system comprises that main website, distribution transforming concentrator, collector and user measure ammeter, adopt the telecommunication mode to connect between described main website and the distribution transforming concentrator, connect by multichannel frequency communication mode between described distribution transforming concentrator and the collector.
An optimal technical scheme of the present utility model is: described a kind of power distribution station kilowatt meter reading-out system, its improvement is: described distribution transforming concentrator is by the bussed supply of low-tension supply, collection is installed in the data of the collector on the branch line of voltage source, the signal that described distribution transforming concentrator receives is a current pulse power frequency multiway transmission signal, and the power frequency modulation signal maximum surge current peak value of described collector is below 5A.
Further optimal technical scheme of the present utility model is: described a kind of power distribution station kilowatt meter reading-out system, its improvement is, described low-tension supply is the three-phase system of 220V, on the branch line of described low-tension supply 18 collectors can be installed at most and the distribution transforming concentrator carries out frequency communication simultaneously.
Of the present utility model one more preferably technical scheme be: described a kind of power distribution station kilowatt meter reading-out system, its improvement is: described collector has 6 to be installed in low-tension supply A and to go up mutually and simultaneously carry out frequency communication with the distribution transforming concentrator, there are 6 to be installed in low-tension supply B and to go up mutually and simultaneously carry out frequency communication, have 6 to be installed in low-tension supply C and to go up the while mutually and carry out frequency communication with the distribution transforming concentrator with the distribution transforming concentrator.
Of the present utility model one further optimal technical scheme be: described a kind of power distribution station kilowatt meter reading-out system, its improvement is: the branch line way of described low-tension supply is N, and then the data throughput of system can reach N * 225bps.
Another optimal technical scheme of the present utility model is: described a kind of power distribution station kilowatt meter reading-out system, its improvement is: described distribution transforming concentrator comprises current transformer 21, signal-processing board 22 and control panel 23, and described distribution transforming concentrator extracts power frequency component by the current transformer 21 that is installed on the branch line.
Another optimal technical scheme of the present utility model is: described a kind of power distribution station kilowatt meter reading-out system, its improvement is: adopt optical fiber communication mode or communication with telecommunication between described main website and the distribution transforming concentrator.
Another optimal technical scheme of the present utility model is: described a kind of power distribution station kilowatt meter reading-out system, its improvement is: described collector is by being the data that pulse interface or RS-485 communication interface collection user measures ammeter.
Of the present utility model another more preferably technical scheme be: described a kind of power distribution station kilowatt meter reading-out system, its improvement is: described collector is embedded in the watchcase that the user measures ammeter.
The utility model beneficial effect: the utility model adopts the power frequency component of design voluntarily not penetrate the multichannel communication multiple telecommunication pattern of transformer transmission, unique multipath transmission and current impulse reception technique have been adopted, low pressure resident's ammeter of the same substation transformer that can copy and accept in a large number, disperses; Power frequency component need not penetrate the transformer transmission, stable signal transmission is reliable, can further reduce the signal modulate intensity, reduce the power frequency component modulation power, collector power frequency modulating current peak value can be reduced to below the 5A, overcome between the adjacent distribution transformer and harassed and the phase mutual interference, eliminated the influence of system works the quality of power supply.The utility model kilowatt meter reading-out system can also counting statistics low pressure line loss when finishing resident's ammeter and overcharging in real time, and system maintenance easy.
Description of drawings:
Fig. 1 the utility model distribute-electricity transformer district kilowatt meter reading-out system synoptic diagram;
Detailed connection diagram between Fig. 2 the utility model distribution transforming concentrator and the collector;
Fig. 3 the utility model power frequency component subregion antinoise signal is harassed the detection synoptic diagram.
Embodiment:
As shown in Figure 1, the utility model distribute-electricity transformer district kilowatt meter reading-out system comprises: main website 1, distribution transforming concentrator 2, collector 4 and user measure ammeter 5, adopt the telecommunication mode to connect between main website 1 and the distribution transforming concentrator 2, adopt optical fiber communication or radio communication with the telecommunication mode.Connect by multichannel frequency communication mode between distribution transforming concentrator 2 and the collector 4.Can leave RS-232 on the distribution transforming concentrator 2, RS-485 and Ethernet interface, and leave excuse with switchgear building switch changed position quantity of state.Distribution transforming concentrator 2 also can leave the frequency communication interface, can directly link to each other with the ammeter 7 that is embedded with the frequency communication module.Distribution transforming concentrator 2 is by bus 83 power supplies of low-tension supply, the data of gathering the collector 4 on the branch line 81 that is installed in voltage source.Distribution transforming concentrator 2 received current impulse type power frequency multiway transmission signals, the power frequency modulation signal maximum surge current peak value of collector 4 is below 5A.Collector 4 measures ammeter 5 by 485 bus interface with the user and communicates by letter, also can be by the pulse output that the user measures ammeter 5 of reading of pulse interface, and stored the electric energy data of accumulative total according to certain time interval.For the ease of safeguarding that collector 4 can be directly embedded into the user and measure in the watchcase of ammeter 5.
Detailed connection between distribution transforming concentrator 2 and the collector 4 as shown in Figure 2, distribution transforming concentrator 2 mainly comprises: current transformer 21, signal-processing board 22 and control panel 23.Distribution transforming concentrator 2 extracts power frequency component, each branch line 81 corresponding block signal receiving processing circuit plate 22 by the current transformer 21 that is installed on the branch line 81.The power supply of distribution transforming concentrator 2 obtains from the bus 83 of low-tension supply.
Low-tension supply is a three-phase four-wire system, altogether 4 electric power incoming lines.A phase power lead provides the time synchronized benchmark for collector 4 communications that distribution transforming concentrator 2 and A articulate on mutually; B phase power lead provides the time synchronized benchmark for collector 4 communications that distribution transforming concentrator 2 and B articulate on mutually; C phase power lead provides the time synchronized benchmark for collector 4 communications that distribution transforming concentrator 2 and C articulate on mutually.
When collector 4 obtains power supply and signal of communication by the 220V low-tension supply.Power supply A goes up 6 collectors of installation 4 mutually and communicates by letter with distribution transforming concentrator 2 simultaneously, power supply B goes up 6 collectors of installation 4 mutually and communicates by letter with distribution transforming concentrator 2 simultaneously, power supply C goes up also 6 collectors 4 mutually and communicates by letter with distribution transforming concentrator 2 simultaneously, on the three-phase 220V low-voltage power supply source branch line 81 18 collectors 4 can be installed and communicate by letter simultaneously with distribution transforming concentrator 2.For the radial distribution branch line 81 of low-pressure side, be N as branch line 81 ways of low-tension supply, then the data throughput of system can reach N * 225bps.
The method that the collector address is set is: with 4 one groups of 18 collectors is the lowest address layout.Because three-phase supply mutual deviation 120 degree electrical angles.Frequency communication is finished communication synchronization according to the voltage waveform zero crossing, and each communication is as the criterion with the voltage phase sequence of switchgear building.The power frequency downgoing signal, promptly the distribution transforming concentrator in the system 2 is toward the signal of collector 4 transmissions; The power frequency upward signal, i.e. the signal of 4 pairs of distribution transforming concentrators of the collector in the system, 2 transmissions.Distribution transforming concentrator 2 is set up frequency communication according to the collector 4 of the order of main website 1 and corresponding single collector 4 or a group or specific quantity and is connected during communication.Calculate with every station power distribution transformer-supplied user 500 families, perhaps be equivalent to 500 collectors 4 are installed, measure ammeter 5 call duration times according to every user and calculated in 10 seconds, then can finish the interval data collection in 15 minutes.
The crosstalk phenomenon of power frequency component between distribution transforming low-pressure side three-phase is commonplace, as shown in Figure 3, no matter be the power frequency downgoing signal that the power frequency upward signal that receives of distribution transforming concentrator 2 or collector 4 receive, be that 20ms has returned the signal energy characteristic distribution in the time interval at a voltage cycle.The main signal energy II district in the drawings that distributes, the signal energy of I district and III district appearance is other undesired signal that goes up mutually among the figure, can prevent effectively that by the signal energy feature of three subregions of comparison stop signal harasses the influence of problem to the power frequency component detection.The I district duration is 150 degree electrical angles among Fig. 3, and the II district duration is 30 degree electrical angles, and the III district duration is 180 degree electrical angles, and each corresponding time of degree electrical angle is 0.056ms.
The utility model is based on the electric supply meter data centralization kilowatt meter reading-out system of low-voltage power line, can overcome that existing frequency communication system transmissions speed is low, signal is striden the problem that transformer is crosstalked, be implemented in multi-user's ammeter data in the same station power distribution transformer platform district scope and concentrate to gather and copy and accept.
Claims (8)
1. power distribution station kilowatt meter reading-out system, it is characterized in that: this system comprises that main website (1), distribution transforming concentrator (2), collector (4) and user measure ammeter (5), adopt the telecommunication mode to connect between described main website (1) and the distribution transforming concentrator (2), connect by multichannel frequency communication mode between described distribution transforming concentrator (2) and the collector (4).
2. a kind of power distribution station as claimed in claim 1 kilowatt meter reading-out system, it is characterized in that: described distribution transforming concentrator (2) is by bus (83) power supply of low-tension supply, collection is installed in the data of the collector on the branch line (81) of voltage source, and the signal that described distribution transforming concentrator (2) receives is a current pulse power frequency multiway transmission signal.
3. a kind of power distribution station as claimed in claim 2 kilowatt meter reading-out system, it is characterized in that, described low-tension supply is the three-phase system of 220V, 18 collectors (4) can be installed at most on the branch line of described low-tension supply carry out frequency communication simultaneously with distribution transforming concentrator (2).
4. a kind of power distribution station as claimed in claim 3 kilowatt meter reading-out system, it is characterized in that: described collector (4) has 6 to be installed in low-tension supply A and to go up mutually and simultaneously carry out frequency communication with distribution transforming concentrator (2), there are 6 to be installed in low-tension supply B and to go up mutually and simultaneously carry out frequency communication, have 6 to be installed in low-tension supply C and to go up the while mutually and carry out frequency communication with distribution transforming concentrator (2) with distribution transforming concentrator (2).
5. a kind of power distribution station as claimed in claim 1 kilowatt meter reading-out system, it is characterized in that: described distribution transforming concentrator (2) comprises current transformer (21), signal-processing board (22) and control panel (23), and described distribution transforming concentrator (2) extracts power frequency component by the current transformer (21) that is installed on the branch line.
6. a kind of power distribution station as claimed in claim 1 kilowatt meter reading-out system is characterized in that: adopt optical fiber communication mode or communication with telecommunication between described main website (1) and the distribution transforming concentrator (2).
7. a kind of power distribution station as claimed in claim 1 kilowatt meter reading-out system is characterized in that: described collector (4) is by being the data that pulse interface or RS-485 communication interface collection user measures ammeter (5).
8. a kind of power distribution station as claimed in claim 7 kilowatt meter reading-out system is characterized in that: described collector (4) is embedded in the watchcase that the user measures ammeter (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202470716U CN201681481U (en) | 2009-11-17 | 2009-11-17 | Distribution network meter reading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202470716U CN201681481U (en) | 2009-11-17 | 2009-11-17 | Distribution network meter reading system |
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| CN201681481U true CN201681481U (en) | 2010-12-22 |
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| CN2009202470716U Expired - Lifetime CN201681481U (en) | 2009-11-17 | 2009-11-17 | Distribution network meter reading system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185638A (en) * | 2011-04-25 | 2011-09-14 | 中国电力科学研究院 | Power line carrier and two-way power frequency communication mixing networking method |
| CN102347972A (en) * | 2011-05-24 | 2012-02-08 | 中国电力科学研究院 | Non-contact type device in rural grid power distribution station area and using method thereof |
| CN104868936A (en) * | 2015-05-12 | 2015-08-26 | 国网重庆市电力公司电力科学研究院 | Anti-crosstalk device and anti-crosstalk system |
| CN106208392A (en) * | 2016-09-20 | 2016-12-07 | 国网山东省电力公司济南供电公司 | A kind of power system platform district information checking apparatus |
| CN109256866A (en) * | 2018-11-19 | 2019-01-22 | 国网四川省电力公司成都供电公司 | The detection terminal of lifter board area topology recognition efficiency and line loss precision |
| CN109887258A (en) * | 2019-01-23 | 2019-06-14 | 山东迅风电子有限公司 | A kind of power information acquisition local communication system based on bandwidth carrier |
-
2009
- 2009-11-17 CN CN2009202470716U patent/CN201681481U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185638A (en) * | 2011-04-25 | 2011-09-14 | 中国电力科学研究院 | Power line carrier and two-way power frequency communication mixing networking method |
| CN102347972A (en) * | 2011-05-24 | 2012-02-08 | 中国电力科学研究院 | Non-contact type device in rural grid power distribution station area and using method thereof |
| CN104868936A (en) * | 2015-05-12 | 2015-08-26 | 国网重庆市电力公司电力科学研究院 | Anti-crosstalk device and anti-crosstalk system |
| CN106208392A (en) * | 2016-09-20 | 2016-12-07 | 国网山东省电力公司济南供电公司 | A kind of power system platform district information checking apparatus |
| CN109256866A (en) * | 2018-11-19 | 2019-01-22 | 国网四川省电力公司成都供电公司 | The detection terminal of lifter board area topology recognition efficiency and line loss precision |
| CN109256866B (en) * | 2018-11-19 | 2022-02-11 | 国网四川省电力公司成都供电公司 | Detection terminal for improving topology identification efficiency and line loss precision of transformer area |
| CN109887258A (en) * | 2019-01-23 | 2019-06-14 | 山东迅风电子有限公司 | A kind of power information acquisition local communication system based on bandwidth carrier |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140307 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140307 |
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Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140307 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160425 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Patentee after: State Grid Smart Grid Institute Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: China Electric Power Research Institute |
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Patentee after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: China Electric Power Research Institute Patentee before: State Grid Smart Grid Institute |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20101222 |