CN201352239Y - Distribution room user identifier - Google Patents
Distribution room user identifier Download PDFInfo
- Publication number
- CN201352239Y CN201352239Y CNU2008202341299U CN200820234129U CN201352239Y CN 201352239 Y CN201352239 Y CN 201352239Y CN U2008202341299 U CNU2008202341299 U CN U2008202341299U CN 200820234129 U CN200820234129 U CN 200820234129U CN 201352239 Y CN201352239 Y CN 201352239Y
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Abstract
The utility model discloses a distribution room user identifier, which comprises a host machine installed at a low-voltage outgoing terminator of a to-be-detected transformer and a handheld terminal connected to a user terminal or an end terminal of a power line in parallel, wherein the host machine is used for detecting impulse current existing at the low-voltage outgoing terminator of the to-be-detected transformer before inputting carrier signals into a bus in which the impulse current is detected, and the handheld terminal is used for receiving the carrier signals and determining distribution room information and phrases of users of a parallel terminal unit according to received carrier signals after the impulse current is generated. The distribution room user identifier adopts the combination of an impulse current method and an FSK electric power carrier signal method to identify distribution rooms, thereby guaranteeing accurate distribution room identification under the condition that adjacent distribution rooms share high voltage, districts and cable trenches. Further the distribution room user identifier can use the impulse current method to identify lines with long distance and severe disturbance and incapable of transmitting electric power carrier signals.
Description
Technical field
The utility model relates to the electric system detection technique, refers to a kind of station user identification apparatus especially.
Background technology
Management of power use department often need generally investigate the subscriber data in all kinds of districts, comprise that the user by which platform transformer-supplied, by which busbar branches power supply (might there be a plurality of branch bars in a transformer), by which powers etc. mutually, with the district's fine-grained management of realization platform, thereby, consumption reduction provides basic data really and accurately for detracting.
At present, in order to realize the fine-grained management of platform district, use station user identification apparatus (being also referred to as platform district user inquiring instrument or business generaI investigation instrument etc.) to determine user's platform district information and separate usually.
Usually, station user identification apparatus adopts the mode of power line carrier, PLC, and Fig. 1 is the synoptic diagram of existing station user identification apparatus detection streamer, and as shown in Figure 1, principle of work is as follows:
Generally, station user identification apparatus comprises main frame and handheld terminal two parts, adopts the mode of power line carrier, PLC between main frame and the handheld terminal.During use, main frame is installed on the low pressure outlet terminal of transformer to be measured, operating personnel utilize handheld terminal to test at user's to be tested incoming line.Be example as shown in Figure 1 with the three-phase, main frame is connected on the low pressure outlet terminal of transformer B, suppose that user to be tested is connected on the c phase cable, handheld terminal also is connected on the c phase cable, when main frame when handheld terminal sends carrier signal, handheld terminal can be received carrier signal and show corresponding information, as the identification number of transformer B, the identification number of place phase etc., draw by detection this moment, and this user to be detected belongs to transformer B and is attempted by on its c phase cable.If main frame is connected on the low pressure outlet terminal of other transformer, so, when main frame when handheld terminal sends carrier signal, handheld terminal should can not receive signal in principle, so just can reach the purpose of accurate detection streamer.
But, because carrier signal is high-frequency voltage signal, can between adjacent lines, propagate, be easy to occur mistake identification for the situation of complex circuit, the adjacent intersection in platform district.That is to say, because conventional table district identifier only adopts the FSK power carrier signal to carry out User Recognition, and carrier signal can be transferred to the high-pressure side by transformer, is transferred to adjacent transformers by hi-line again, and causing " getting lines crossed " phenomenon is being " high pressure is being got lines crossed altogether "; By the same token, if adjacent transformers has common ground situation, it is being " getting lines crossed altogether " that carrier signal also can got lines crossed to adjacent transformers; If the low-voltage cable of adjacent transformers is walked same cable duct, power carrier signal can propagate into by the coupling capacitance between cable on other transformer, i.e. " cable duct is being got lines crossed altogether ".Since altogether high pressure get lines crossed, get lines crossed altogether, the cable duct existence of situation such as get lines crossed altogether, only adopt the conventional table district identifier of power carrier signal to cause erroneous judgement through regular meeting.
And the carrier signal decay is fast, can't differentiate platform district, user place for circuit serious interference or the long user's (usually above 2 kilometers) of circuit.Usually, the electric power public radius of electricity supply in platform district that becomes in city is between 500 meters to 2000 meters, so platform district identifier measuring distance should be not less than 2000 meters.Power carrier signal is a high-frequency signal, and decay is serious, can't long-distance transmissions, make that conventional table district identifier is can't decipherment distance long, circuit disturbs big user.
The utility model content
In view of this, fundamental purpose of the present utility model is to provide a kind of station user identification apparatus, can accurately discern the platform district.
For achieving the above object, the technical solution of the utility model specifically is achieved in that
A kind of station user identification apparatus comprises the main frame on the low pressure outlet terminal that is installed in transformer to be measured, and is attempted by the user side or the terminal handheld terminal of power line;
Main frame detects on the low pressure leading-out terminal of transformer to be measured whether have pulse current, and to detecting the bus injected carrier signal that has pulse current;
Handheld terminal produces pulse current, the reception carrier signal, and determine and connect user's the platform district information of main frame and separate according to the carrier signal that receives.
Described main frame comprises carrier signal transmitter and pulse current detection module, wherein,
The carrier signal sending module, the notice of received pulse current detection module is to detecting the bus injected carrier signal that has pulse current;
The pulse current detection module, when on detecting the low pressure leading-out terminal of place transformer to be measured, having pulse current, notice carrier signal sending module.
Described pulse current detection module comprises: current transformer and indicating module, wherein,
Current transformer detects pulse current from bus;
Indicating module shows detected pulse current information.
Described handheld terminal comprises pulse control module, action module and carrier signal receiver module, wherein,
Pulse control module is sampled to the user side or the terminal alternating voltage of power line, and sends the conducting control signal that continues default duration to action module; Notify carrier receiving module afterwards;
Action module, conducting under the control of conducting control signal produces with the pulsed current signal of default duration as pulse width;
The carrier signal receiver module receives the notice from pulse control module, the reception carrier signal, and determine and connect user's the platform district information of terminal unit and separate according to the carrier signal that receives.
Described action module is a controllable switch element;
The amplitude of adjusting described pulse current that also is connected in series on the described controllable switch element gets conducting resistance.
Described current transformer is one or two or three or four or a plurality of.
As seen from the above technical solution, the utility model platform district identifier comprises the main frame on the low pressure outlet terminal that is installed in transformer to be measured, and is attempted by the user side or the terminal handheld terminal of power line.Wherein, main frame be used for detect have pulse current on the low pressure leading-out terminal of transformer to be measured after, to detecting the bus injected carrier signal that has pulse current; Handheld terminal is used for after producing pulse current, the reception carrier signal, and determine and connect user's the platform district information of terminal unit and separate according to the carrier signal that receives.
The method that the utility model platform district identifier adopts pulse current method and FSK power carrier signal method to combine is carried out the identification of platform district, guaranteed to become high pressure altogether, altogether, can accurately carry out the identification of platform district under the situation of cable duct altogether in adjacent stations, circuit for the distance serious interference, power carrier signal possibly can't be transmitted, even this situation pulse current method also can be discerned.
Description of drawings
Fig. 1 is the synoptic diagram of existing station user identification apparatus detection streamer;
Fig. 2 is the synoptic diagram of embodiment of the composition structure of the utility model station user identification apparatus.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
Fig. 2 is the composition structural representation of the utility model station user identification apparatus, as shown in Figure 2, the utility model station user identification apparatus comprises the main frame on the low pressure outlet terminal that is installed in transformer to be measured and is attempted by user side or terminal handheld terminal two parts of power line.Wherein, main frame, be used for detect have pulse current on the low pressure leading-out terminal of transformer to be measured after, to detecting the bus injected carrier signal that has pulse current; Handheld terminal is used for after producing pulse current, the reception carrier signal, and determine and connect user's the platform district information of terminal unit and separate according to the carrier signal that receives.
Main frame is by the carrier signal sending module of existing station user identification apparatus, and the pulse current detection module is formed; Handheld terminal comprises the carrier signal receiver module that carrier wave receives of finishing of existing station user identification apparatus, and pulse current generation module and action module.The principle of work of the utility model station user identification apparatus is described below:
The action module of handheld terminal is sent a pulsed current signal under the control of pulse control module, after the pulse current detection module of main frame detects this pulsed current signal, demonstrate the separate of this signal and (can judge certain phase that this user belongs to transformer to be measured in view of the above, the method is a pulse current method), the carrier signal sending module of main frame sends power carrier signal simultaneously; If handheld terminal is received this carrier signal, illustrate that this user belongs to this transformer to be measured,, need then to check whether main frame receives pulsed current signal if handheld terminal is not received this carrier signal, if receive pulsed current signal, illustrate that then this user belongs to this transformer to be measured; If main frame does not receive that pulsed current signal illustrates that then this user does not belong to this transformer to be measured.
Because pulsed current signal can not propagate on other circuit, and transmission range can be very length, therefore, station user identification apparatus of the present invention can be discerned all users accurately and reliably, thereby avoided the situation of erroneous judgement, also do not had the user's that can't discern situation.
Specifically, in the handheld terminal, action module is sent a pulsed current signal under the control of pulse control module, pulse control module sends notice to the carrier signal receiver module then, after the carrier signal receiver module receives notice, handheld terminal reception carrier signal, and determine and catcher is held the user's of terminal the platform district of incoming line according to the carrier signal that receives.
Main frame is installed on the low pressure outlet terminal of transformer to be measured, after the pulse current detection module in the main frame detects pulse current, pulse current detection module notice carrier signal sending module, the carrier signal sending module is to detecting the bus injected carrier signal that has pulse current.
Need to prove, those skilled in the art understand the carrier signal receiver module easily and comprise that carrier signal receiver and controller are CPU two parts, the carrier signal sending module comprises that carrier signal transmitter and controller are CPU two parts, and specific implementation belongs to technology as well known to those skilled in the art, no longer describes in detail here.
Introduce the utility model station user identification apparatus below in detail and respectively form module:
The pulse current detection module comprises current transformer and indicating module.Current transformer is used for detecting pulse current at the other end of cable, and by indicating module detected pulse current information is indicated to the testing staff.Current transformer can adopt hook type current transformer, and indicating module can be to adopt the mode of numeral or figure to show the pulse current relevant information, as amplitude, place bus etc., thus the cable at definite user side or terminal place.
Pulse control module is used for the user side or the terminal alternating voltage of power line are sampled, and sends the conducting control signal that continues default duration to action module.Need to prove, belong to those skilled in the art's common technology means, realize, no longer describe in detail here such as waiting by single-chip microcomputer, DSP or programmable logic device (PLD) for sampling alternating voltage, the specific implementation that generates the conducting control signal.The amplitude of pulse current can realize that the time of pulse current can be by the ON time control of gauge tap element by the conducting resistance of gauge tap element.
Action module is used for conducting under the control of conducting control signal, produces with the pulsed current signal of default duration as pulse width.Action module can adopt controllable switch element, waits such as solid-state relay, thyristor, transistor, IGBT and realizes.
The detection of paired pulses electric current is described as follows:
Suppose under transformer B, to exist branch road 1, branch road 2 and branch road 3.Load 3 belongs to branch road 1, and load 2 belongs to branch road 2, and load 1 belongs to branch road 3.
Suppose that action module is that a solid-state relay is G1, its end s and end d are attempted by on two input ends of pulse control module, and control end k is connected with the conducting control signal output ends of pulse control module; Two input ends of pulse control module are attempted by in the load 1 as the input end of terminal unit; Load 1 is connected on bus c and the bus n.
After main frame works on power, pulse control module sends the conducting control signal that continues default duration to G1, G1 is closed conducting under the control of conducting control signal, disconnect then, so repeatedly, thereby produce one with the consecutive pulses current signal of scheduled duration as pulse width, this pulsed current signal can flow to this cable along load 1 place cable another go out end.At this moment, in branch road 3, bus c, bus n, all there is pulse current to produce, and in branch road 1, branch road 2, bus a, bus b, can not produce pulse current.
The amplitude of pulse current can realize that such as be connected in series the amplitude that a resistance is adjusted pulse current on G1, the big I of pulse current amplitude changes according to field condition, usually in 0.1 ampere of (A)～100A scope by the conducting resistance of gauge tap element.The related key adjusting method of resistance sizes and amplitude belongs to electrician's general knowledge, no longer describes in detail here.
At this moment, the staff can hold the electromagnetic wave that handheld pulse detecting device received pulse electric current produces, and follow the trail of that the electromagnetic wave receive arrives cable another go out end, another goes out on the end current transformer pincers of then the handheld pulse detecting device being joined at cable, detects pulse current amplitude.Like this, the staff belongs to the c phase of transformer B with regard to the branch road 3 of having found out load 1 place beyond all doubtly.
Because pulse current exists only among branch road 3, bus c, the bus n, so situation about can judge by accident not, also situation that can pulsing current signal insufficient amplitude.Therefore, be accurately and reliably by the utility model cable detecting device detection streamer.
As shown in Figure 2, in the present embodiment,
Four carrier signal lead-out terminals of main frame are received respectively on four outlet terminals of a, b, c, n of transformer B low pressure end, and by the carrier signal terminal, the carrier signal transmitter of main frame is to transformer bus injected carrier signal; By three split core type current transformer A1, A2 and A3, receive respectively on bus a, the bus b and bus c of transformer respectively three pulse current test sides of the Ia of main frame, Ib and Ic, is respectively applied for to detect on the corresponding two buss lines whether have pulse current.
The pulse current output terminal of handheld terminal is attempted by on the bus c, and carrier signal receives terminal and also is attempted by on the bus c.
The process that employing the utility model station user identification apparatus carries out the identification of platform district is as follows:
Handheld terminal produces a consecutive pulses electric current, incoming carrier signal accepting state then earlier; After main frame detected and has pulse current among the bus c, indication received pulsed current signal on bus c, then to bus c injected carrier signal;
After handheld terminal receives carrier signal,, determine to belong to the c phase of transformer B according to the information of carrying in the carrier signal.
From the course of work shown in Figure 2 as can be seen, in station user identification apparatus of the present utility model, main frame only after receiving the pulsed current signal of terminal unit, just can send carrier signal to pulse current place bus, therefore, avoided the situation of erroneous judgement in the identification of platform district.And pulsed current signal also can not be subjected to the interference of power circuit itself, guaranteed the accuracy of platform district identification.
If handheld terminal does not receive carrier signal always, need the staff of main frame further to determine.Indicated pulse current information if find the indicating member of main frame, then explanation has c phase pulse current received signal, thereby determines to belong to transformer B; If the indicating member of discovery unit, top is the marker pulse current information not, then explanation does not have c phase pulse current received signal, thereby determines not belong to transformer B.
We know that may there be a plurality of branch bars in a transformer, determine which branch bar the cable that load connects that needs to detect belongs to, and can utilize the handheld terminal of the utility model station user identification apparatus to realize equally.Electric power system for branch can be determined concrete branch and cable louding by the handheld pulse detecting device.The use of handheld pulse detecting device repeats no more as previously mentioned here.
Need to prove that in embodiment illustrated in fig. 2, main frame is furnished with three current transformers, in real work, can join one, two, four or more.If only join a current transformer, it can be connect and be clipped on the bus n, perhaps three wire clamps of bus a, bus b and bus c are in the same place.
The above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. a station user identification apparatus is characterized in that, comprises the main frame on the low pressure outlet terminal that is installed in transformer to be measured, and is attempted by the user side or the terminal handheld terminal of power line;
Main frame detects on the low pressure leading-out terminal of transformer to be measured whether have pulse current, and to detecting the bus injected carrier signal that has pulse current;
Handheld terminal produces pulse current, the reception carrier signal, and determine and connect user's the platform district information of main frame and separate according to the carrier signal that receives.
2. station user identification apparatus according to claim 1 is characterized in that, described main frame comprises carrier signal sending module and pulse current detection module, wherein,
The carrier signal sending module, the notice of received pulse current detection module is to detecting the bus injected carrier signal that has pulse current;
The pulse current detection module, when on detecting the low pressure leading-out terminal of place transformer to be measured, having pulse current, notice carrier signal sending module.
3. station user identification apparatus according to claim 2 is characterized in that, described pulse current detection module comprises: current transformer and indicating module, wherein,
Current transformer detects pulse current from bus;
Indicating module shows detected pulse current information.
4. station user identification apparatus according to claim 1 is characterized in that, described handheld terminal comprises pulse control module, action module and carrier signal receiver module, wherein,
Pulse control module is sampled to the user side or the terminal alternating voltage of power line, and sends the conducting control signal that continues default duration to action module; Notify carrier receiving module afterwards;
Action module, conducting under the control of conducting control signal produces with the pulsed current signal of default duration as pulse width;
The carrier signal receiver module receives the notice from pulse control module, the reception carrier signal, and determine and connect user's the platform district information of terminal unit and separate according to the carrier signal that receives.
5. station user identification apparatus according to claim 4 is characterized in that, described action module is a controllable switch element;
The amplitude of adjusting described pulse current that also is connected in series on the described controllable switch element gets conducting resistance.
6. station user identification apparatus according to claim 3 is characterized in that, described current transformer is one or two or three or four or a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202341299U CN201352239Y (en) | 2008-12-29 | 2008-12-29 | Distribution room user identifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008202341299U CN201352239Y (en) | 2008-12-29 | 2008-12-29 | Distribution room user identifier |
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| CN201352239Y true CN201352239Y (en) | 2009-11-25 |
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| CNU2008202341299U Expired - Fee Related CN201352239Y (en) | 2008-12-29 | 2008-12-29 | Distribution room user identifier |
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Cited By (19)
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| CN102680842A (en) * | 2012-06-06 | 2012-09-19 | 杭州海兴电力科技有限公司 | Distribution room automatic identification tester and identification method thereof |
| CN103149500A (en) * | 2011-10-03 | 2013-06-12 | 施耐德电器工业公司 | Method for locating current consumer points, processing device, current sensor and associated current meter |
| CN103543378A (en) * | 2013-09-26 | 2014-01-29 | 光一科技股份有限公司 | Power distribution sheet relation detecting method |
| CN104007352A (en) * | 2014-06-18 | 2014-08-27 | 国家电网公司 | Area identifier |
| CN104020367A (en) * | 2013-03-01 | 2014-09-03 | 北海市聚志电子科技有限公司 | Transformer area user automatic identification system |
| CN104092481A (en) * | 2014-07-17 | 2014-10-08 | 江苏林洋电子股份有限公司 | Method for distinguishing power distribution area and phase through voltage characteristics |
| CN104122482A (en) * | 2014-08-06 | 2014-10-29 | 国网上海市电力公司 | System and method of line recognition adopting power line carrier communication |
| CN104251946A (en) * | 2014-08-06 | 2014-12-31 | 国网上海市电力公司 | Remote hand-held terminal and power line identification method thereof |
| CN105355014A (en) * | 2015-09-24 | 2016-02-24 | 国网山东省电力公司烟台供电公司 | Remote station area user identifier |
| CN105788227A (en) * | 2016-05-19 | 2016-07-20 | 国网冀北电力有限公司电力科学研究院 | Electricity consumption information acquisition system fault diagnosis equipment |
| CN106383265A (en) * | 2016-08-26 | 2017-02-08 | 北京中宸泓昌科技有限公司 | Transformer area and access phase automatic recognition device and method |
| CN107942151A (en) * | 2017-11-29 | 2018-04-20 | 国网湖南省电力有限公司 | A kind of separate measuring method of taiwan area low voltage three-phase circuit and device based on voltage over zero detection |
| CN108270678A (en) * | 2016-12-30 | 2018-07-10 | 国网河北省电力公司 | A kind of low voltage power circuit network topology judgment method and system |
| CN109164349A (en) * | 2018-08-27 | 2019-01-08 | 国网辽宁省电力有限公司盘锦供电公司 | Multifunctional cable identifier |
| CN109683064A (en) * | 2019-03-05 | 2019-04-26 | 深圳供电局有限公司 | The area distribution network Duo Tai online recognition system and method |
| CN109799409A (en) * | 2019-03-19 | 2019-05-24 | 深圳供电局有限公司 | A kind of differentiation branch identification device |
| CN109920237A (en) * | 2019-02-26 | 2019-06-21 | 国网福建省电力有限公司漳浦县供电公司 | A kind of linear-elsatic buckling and switch state monitoring device and method based on bandwidth carrier |
| CN110907717A (en) * | 2019-10-24 | 2020-03-24 | 国网天津静海供电有限公司 | Medium voltage line becomes relation discernment appearance |
| CN112152318A (en) * | 2020-09-18 | 2020-12-29 | 江苏智臻能源科技有限公司 | Low-voltage distribution area topology rapid identification method |
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2008
- 2008-12-29 CN CNU2008202341299U patent/CN201352239Y/en not_active Expired - Fee Related
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| CN103149500A (en) * | 2011-10-03 | 2013-06-12 | 施耐德电器工业公司 | Method for locating current consumer points, processing device, current sensor and associated current meter |
| CN102680842A (en) * | 2012-06-06 | 2012-09-19 | 杭州海兴电力科技有限公司 | Distribution room automatic identification tester and identification method thereof |
| CN102680842B (en) * | 2012-06-06 | 2014-08-20 | 杭州海兴电力科技股份有限公司 | Distribution room automatic identification tester and identification method thereof |
| CN104020367A (en) * | 2013-03-01 | 2014-09-03 | 北海市聚志电子科技有限公司 | Transformer area user automatic identification system |
| CN103543378B (en) * | 2013-09-26 | 2015-10-21 | 光一科技股份有限公司 | Platform sheet relation detection method |
| CN103543378A (en) * | 2013-09-26 | 2014-01-29 | 光一科技股份有限公司 | Power distribution sheet relation detecting method |
| CN104007352A (en) * | 2014-06-18 | 2014-08-27 | 国家电网公司 | Area identifier |
| CN104092481A (en) * | 2014-07-17 | 2014-10-08 | 江苏林洋电子股份有限公司 | Method for distinguishing power distribution area and phase through voltage characteristics |
| CN104092481B (en) * | 2014-07-17 | 2016-04-20 | 江苏林洋能源股份有限公司 | A kind of by voltage characteristic differentiation Tai Qu and phase method for distinguishing |
| CN104122482A (en) * | 2014-08-06 | 2014-10-29 | 国网上海市电力公司 | System and method of line recognition adopting power line carrier communication |
| CN104251946A (en) * | 2014-08-06 | 2014-12-31 | 国网上海市电力公司 | Remote hand-held terminal and power line identification method thereof |
| CN104251946B (en) * | 2014-08-06 | 2018-01-30 | 国网上海市电力公司 | Distant place handheld terminal and its power line recognition methods |
| CN105355014A (en) * | 2015-09-24 | 2016-02-24 | 国网山东省电力公司烟台供电公司 | Remote station area user identifier |
| CN105788227A (en) * | 2016-05-19 | 2016-07-20 | 国网冀北电力有限公司电力科学研究院 | Electricity consumption information acquisition system fault diagnosis equipment |
| CN105788227B (en) * | 2016-05-19 | 2021-12-21 | 国网冀北电力有限公司计量中心 | Fault diagnosis equipment for electricity consumption information acquisition system |
| CN106383265A (en) * | 2016-08-26 | 2017-02-08 | 北京中宸泓昌科技有限公司 | Transformer area and access phase automatic recognition device and method |
| CN106383265B (en) * | 2016-08-26 | 2019-02-01 | 北京中宸泓昌科技有限公司 | A kind of area and the device and method for accessing phase automatic identification |
| CN108270678A (en) * | 2016-12-30 | 2018-07-10 | 国网河北省电力公司 | A kind of low voltage power circuit network topology judgment method and system |
| CN107942151A (en) * | 2017-11-29 | 2018-04-20 | 国网湖南省电力有限公司 | A kind of separate measuring method of taiwan area low voltage three-phase circuit and device based on voltage over zero detection |
| CN109164349A (en) * | 2018-08-27 | 2019-01-08 | 国网辽宁省电力有限公司盘锦供电公司 | Multifunctional cable identifier |
| CN109920237A (en) * | 2019-02-26 | 2019-06-21 | 国网福建省电力有限公司漳浦县供电公司 | A kind of linear-elsatic buckling and switch state monitoring device and method based on bandwidth carrier |
| CN109683064A (en) * | 2019-03-05 | 2019-04-26 | 深圳供电局有限公司 | The area distribution network Duo Tai online recognition system and method |
| CN109683064B (en) * | 2019-03-05 | 2021-06-29 | 深圳供电局有限公司 | Multi-region online identification system and method for power distribution network |
| CN109799409A (en) * | 2019-03-19 | 2019-05-24 | 深圳供电局有限公司 | A kind of differentiation branch identification device |
| CN110907717A (en) * | 2019-10-24 | 2020-03-24 | 国网天津静海供电有限公司 | Medium voltage line becomes relation discernment appearance |
| CN112152318A (en) * | 2020-09-18 | 2020-12-29 | 江苏智臻能源科技有限公司 | Low-voltage distribution area topology rapid identification method |
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