CN215264870U - Household variable relation recognizer - Google Patents
Household variable relation recognizer Download PDFInfo
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- CN215264870U CN215264870U CN202121667085.0U CN202121667085U CN215264870U CN 215264870 U CN215264870 U CN 215264870U CN 202121667085 U CN202121667085 U CN 202121667085U CN 215264870 U CN215264870 U CN 215264870U
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Abstract
The utility model relates to the technical field of power system automation, in particular to a household transformer relation recognizer, which comprises a plurality of transformers, wherein each transformer is connected with a plurality of electric meters, the low-voltage side of each transformer is connected with a transmitter, the electric meters are connected with a receiver, and four power lines of an A phase, a B phase, a C phase and a GND phase of the transmitter are respectively and correspondingly connected with four power lines of an A phase, a B phase, a C phase and a GND phase of the low-voltage side of each transformer; the transmitter generates high-frequency signals with different frequencies, and the high-frequency signals with different frequencies are respectively coupled to the phase A, the phase B and the phase C on the low-voltage side of the transformer; the receiver receives high-frequency signals with different frequencies at the electric meter side, and detects the household variable membership of the electric meter where the current receiver is located according to the high-frequency signals with different frequencies. The utility model discloses can accurately discern the family and become the relation, promote the qualification rate in the line loss renovation to low-voltage transformer district and brought the result, improve economic benefits and social, improve equipment utilization rate.
Description
Technical Field
The utility model relates to an electric power system automation technical field, more specifically relates to a family becomes relation recognizer.
Background
At present, the line loss inspection work of a low-voltage transformer area mostly has the phenomenon of disordered user variation, and after the PMS2.0 is on line, the phenomenon of user line crossing often occurs, and field verification and verification are needed. Especially in old communities and urban and rural junctions, the phenomenon is more obvious. The power supply terminal users often cross each other, the geographical location boundary is not clear, the power supply company is difficult to confirm which specific user belongs to which designated transformer to supply power, and in order to determine which phase of which transformer each user is connected, the requirement of network topology relocation of the power supply terminal users is needed. Namely: a simple and reliable method is to be found, and under the condition of electrification, which phase of which transformer each user is hung on can be judged.
Carrier communication is the main scheme currently used for the user-variant relationship of live cores. However, simply applying the on-off characteristics of carrier communication to carry out the user-variant relationship check has the condition that when the attenuation of a carrier channel is large, the signal transmission distance is short and the signal cannot be received; the situation that the carrier signal is strong and can pass through the transformer twice to generate interference exists, and finally the user variable relationship cannot be accurately identified.
The other identification method adopts a cable patrol instrument, the main function of the cable patrol instrument is to retrace the path of the cable, and the efficiency is not high for the application which only needs to know the relationship between the nodes.
Disclosure of Invention
To the above-mentioned drawback that exists among the prior art, the utility model provides a family becomes relation recognizer can accurately discern family and becomes the relation, promotes to the qualification rate in the low pressure platform district line loss renovation and has brought the result, improves economic benefits and social, improve equipment utilization rate.
As a first aspect of the present invention, there is provided an identification apparatus for household transformation relationship, comprising a plurality of transformers, each of the transformers is connected to a plurality of electric meters, the low voltage side of the transformer is connected to a transmitter, the electric meters are connected to a receiver, wherein four power lines of a phase a, a phase B, a phase C and a GND of the transmitter are respectively connected to four power lines of a phase a, a phase B, a phase C and a GND of the low voltage side of the transformer, and signal lines of the receiver are connected to ac lines on the electric meter side;
the transmitter is used for generating high-frequency signals with different frequencies and respectively coupling the high-frequency signals with different frequencies to an A phase, a B phase and a C phase on the low-voltage side of the transformer;
and the receiver is used for receiving the high-frequency signals with different frequencies at the electric meter side and detecting the household variable membership of the electric meter where the current receiver is located according to the high-frequency signals with different frequencies.
Furthermore, the first end of the receiver is connected with the live wire of the electric meter, and the second end of the receiver is connected with the zero wire of the electric meter.
Further, the frequency of the high frequency signal comprises 240KHz, 270KHz, 330KHz, 390KHz or 430 KHz.
Further, the transmitter comprises a control circuit, a frequency synthesizer, a carrier signal generator and a power module, wherein the control circuit, the frequency synthesizer and the carrier signal generator are sequentially connected, the carrier signal generator is respectively connected with the phase A, the phase B and the phase C of the low-voltage side of the transformer, and the power module supplies power to the control circuit and the frequency synthesizer;
the control circuit is used for controlling the frequency synthesizer to generate high-frequency signals with different frequencies;
and the carrier signal generator is used for respectively coupling the high-frequency signals with different frequencies to the A-phase power line, the B-phase power line and the C-phase power line on the low-voltage side of the transformer.
Further, the control circuit comprises a processor, and a dial switch and a potentiometer which are respectively connected with the processor.
Further, the processor comprises a single chip microcomputer or a CPU.
Further, the receiver comprises a carrier signal receiver, a filter, an amplitude detection module, a display module and a power module, wherein the carrier signal receiver, the filter, the amplitude detection module and the display module are sequentially connected, the carrier signal receiver is further connected with the ammeter, and the power module supplies power to the filter, the amplitude detection module and the display module;
the carrier signal receiver is used for receiving the high-frequency signals with different frequencies coupled from the electric meter side power line;
the filter is used for filtering noise interference in the high-frequency signals with different frequencies;
the amplitude detection module is used for receiving the high-frequency signal output by the filter and measuring the amplitude intensity of the high-frequency signal;
and the display module is used for displaying the received amplitude intensity of the high-frequency signal.
Further, the display module comprises a TFT liquid crystal display screen.
The utility model provides a family becomes relation recognizer has following advantage: the household variable relation can be accurately identified, the effect is brought to the improvement of the qualification rate in the line loss remediation of the low-voltage transformer area, the economic benefit and the social benefit are improved, and the utilization rate of equipment is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a system schematic diagram of the user-variable relationship identifier provided by the utility model.
Fig. 2 is a schematic diagram of a transmitter provided by the present invention.
Fig. 3 is a schematic diagram of a receiver provided by the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the objects of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments of the present invention for the specific embodiments, structures, features and effects of the household variable relation recognizer according to the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the explanation of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly unless otherwise specified. For example, the connection may be a fixed connection, a connection through a special interface, or an indirect connection via an intermediate medium. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a household becomes relation recognizer, fig. 1 is the utility model provides a structural schematic diagram of household becomes relation recognizer, as shown in fig. 1, household becomes relation recognizer, including a plurality of transformers, each the transformer is connected a plurality of ammeters, the low pressure side of transformer is connected with the transmitter, the ammeter is connected with the receiver, wherein, four power lines of A looks, B looks, C looks, the GND of transmitter respectively with the A looks, B looks, C looks, the four power lines of GND of transformer low pressure side correspond and are connected, the signal line of receiver connect on the alternating current line of ammeter side;
the transmitter is used for generating high-frequency signals with different frequencies and respectively coupling the high-frequency signals with different frequencies to an A phase, a B phase and a C phase on the low-voltage side of the transformer;
and the receiver is used for receiving the high-frequency signals with different frequencies at the electric meter side and detecting the household variable membership of the electric meter where the current receiver is located according to the high-frequency signals with different frequencies.
The utility model provides a family becomes relation recognizer, be applied to the electric power system family and become the relation detection, through respectively pour into the high frequency signal of three different frequencies in A looks, B looks, C looks three-phase line of transformer low pressure side into, utilize transformer three-phase winding to have higher impedance in the high-frequency band, and high frequency signal has the characteristic of great decay at the alternate; and the user judges the user change membership of the ammeter where the receiver is located at the current user side by utilizing the high-frequency signals with different frequencies received by the handheld receiver at the user ammeter side.
Preferably, the first end of the receiver is connected with the live wire of the electric meter, and the second end of the receiver is connected with the neutral wire of the electric meter.
Preferably, the frequency of the high frequency signal includes 240KHz, 270KHz, 330KHz, 390KHz or 430 KHz.
Preferably, as shown in fig. 2, the transmitter includes a control circuit, a frequency synthesizer, a carrier signal generator and a power module, wherein the control circuit, the frequency synthesizer and the carrier signal generator are sequentially connected, the carrier signal generator is respectively connected with a phase a, a phase B and a phase C on the low-voltage side of the transformer, and the power module supplies power to the control circuit and the frequency synthesizer;
the control circuit is used for controlling the frequency synthesizer to generate high-frequency signals with different frequencies;
and the carrier signal generator is used for respectively coupling the high-frequency signals with different frequencies to the A-phase power line, the B-phase power line and the C-phase power line on the low-voltage side of the transformer.
Specifically, the control circuit comprises a processor, and a dial switch and a potentiometer which are respectively connected with the processor, wherein the processor controls the dial switch to select ABC three phases to output high-frequency signals with the same frequency or different frequencies, and the potentiometer can control the frequency and the power of the high-frequency signals.
Specifically, the processor comprises a single chip microcomputer or a CPU.
It should be noted that the carrier signal generator is a signal generator known to those skilled in the art, and is conventional and will not be described herein again.
Preferably, as shown in fig. 3, the receiver includes a carrier signal receiver, a filter, an amplitude detection module, a display module, and a power supply module, where the carrier signal receiver, the filter, the amplitude detection module, and the display module are sequentially connected, the carrier signal receiver is further connected to the electric meter, and the power supply module supplies power to the filter, the amplitude detection module, and the display module;
the carrier signal receiver is used for receiving the high-frequency signals with different frequencies coupled from the electric meter side power line;
the filter is used for filtering noise interference in the high-frequency signals with different frequencies;
the amplitude detection module is used for receiving the high-frequency signal output by the filter and measuring the amplitude intensity of the high-frequency signal;
and the display module is used for displaying the received amplitude intensity of the high-frequency signal.
Specifically, as shown in fig. 3, a signal line of the receiver is connected to an ac line on the user electrical meter side, a high-frequency signal coupled to the ac line on the user electrical meter side is divided into 5 paths after passing through the carrier signal receiver, and is sent to five filters for signal filtering processing, and the amplitude intensity of the filtered high-frequency signal is detected by the amplitude detection module.
Specifically, the model number of the amplitude detection module is AD8302, which is produced by Shenzhen Chuansi electronics Limited.
Specifically, the display module adopts a 2.4-inch TFT liquid crystal display screen.
It should be noted that the carrier signal receiver is well known to those skilled in the art, and is conventional and will not be described herein again.
It should be noted that the power supply module includes an AC-DC converter, a DC-DC converter, etc., and the power supply module is well known to those skilled in the art and will not be described in detail here.
The utility model provides a theory of operation of family change relation recognition appearance can refer to the description in the preamble, and this is no longer repeated.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment without departing from the scope of the present invention, but all the modifications, equivalent changes and modifications of the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.
Claims (8)
1. The household transformer relation recognizer is characterized by comprising a plurality of transformers, wherein each transformer is connected with a plurality of electric meters, the low-voltage side of each transformer is connected with a transmitter, each electric meter is connected with a receiver, four power lines of an A phase, a B phase, a C phase and GND (ground) of each transmitter are respectively and correspondingly connected with the four power lines of the A phase, the B phase, the C phase and the GND of the low-voltage side of each transformer, and signal lines of each receiver are connected to alternating current lines of the electric meters;
the transmitter is used for generating high-frequency signals with different frequencies and respectively coupling the high-frequency signals with different frequencies to an A phase, a B phase and a C phase on the low-voltage side of the transformer;
and the receiver is used for receiving the high-frequency signals with different frequencies at the electric meter side and detecting the household variable membership of the electric meter where the current receiver is located according to the high-frequency signals with different frequencies.
2. The user-dependent relationship recognizer of claim 1, wherein a first end of the receiver is coupled to a hot line of the electric meter and a second end is coupled to a neutral line of the electric meter.
3. The apparatus of claim 1, wherein the frequency of the high frequency signal comprises 240KHz, 270KHz, 330KHz, 390KHz or 430 KHz.
4. The apparatus according to claim 1, wherein the transmitter comprises a control circuit, a frequency synthesizer, a carrier signal generator and a power module, wherein the control circuit, the frequency synthesizer and the carrier signal generator are connected in sequence, the carrier signal generator is respectively connected with the phase a, the phase B and the phase C on the low-voltage side of the transformer, and the power module supplies power to the control circuit and the frequency synthesizer;
the control circuit is used for controlling the frequency synthesizer to generate high-frequency signals with different frequencies;
and the carrier signal generator is used for respectively coupling the high-frequency signals with different frequencies to the A-phase power line, the B-phase power line and the C-phase power line on the low-voltage side of the transformer.
5. The apparatus of claim 4, wherein the control circuit comprises a processor, and a dial switch and a potentiometer respectively connected to the processor.
6. The apparatus of claim 5, wherein the processor comprises a single chip or a CPU.
7. The apparatus according to claim 1, wherein the receiver comprises a carrier signal receiver, a filter, an amplitude detection module, a display module and a power module, wherein the carrier signal receiver, the filter, the amplitude detection module and the display module are connected in sequence, the carrier signal receiver is further connected with the electricity meter, and the power module supplies power to the filter, the amplitude detection module and the display module;
the carrier signal receiver is used for receiving the high-frequency signals with different frequencies coupled from the electric meter side power line;
the filter is used for filtering noise interference in the high-frequency signals with different frequencies;
the amplitude detection module is used for receiving the high-frequency signal output by the filter and measuring the amplitude intensity of the high-frequency signal;
and the display module is used for displaying the received amplitude intensity of the high-frequency signal.
8. The apparatus of claim 7, wherein the display module comprises a TFT liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121667085.0U CN215264870U (en) | 2021-07-21 | 2021-07-21 | Household variable relation recognizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121667085.0U CN215264870U (en) | 2021-07-21 | 2021-07-21 | Household variable relation recognizer |
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| Publication Number | Publication Date |
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| CN215264870U true CN215264870U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121667085.0U Active CN215264870U (en) | 2021-07-21 | 2021-07-21 | Household variable relation recognizer |
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| CN (1) | CN215264870U (en) |
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