CN202362371U - Anti-electricity-theft electric energy meter - Google Patents
Anti-electricity-theft electric energy meter Download PDFInfo
- Publication number
- CN202362371U CN202362371U CN2011204753261U CN201120475326U CN202362371U CN 202362371 U CN202362371 U CN 202362371U CN 2011204753261 U CN2011204753261 U CN 2011204753261U CN 201120475326 U CN201120475326 U CN 201120475326U CN 202362371 U CN202362371 U CN 202362371U
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- Prior art keywords
- electric energy
- energy meter
- live wire
- electricity
- zero line
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000004020 conductor Substances 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
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Abstract
The utility model discloses an anti-electricity-theft electric energy meter, which includes a live wire inlet wire terminal (1), a live wire outlet wire terminal (2), a null line inlet wire terminal (3), a null line outlet wire terminal (4), and conductors (5) respectively connecting the live wire inlet wire terminal (1) and the live wire outlet wire terminal (2) and connecting the null line inlet wire terminal (3) and the null line outlet wire terminal (4), and further includes power supply current transformers (7), wherein a measuring chip (6) of the electric energy meter is connected with all the conductors (5) through conducting wires respectively; primary windings of the power supply current transformers (7) are connected in series with the conductor connecting the live wire inlet wire terminal (1) and the live wire outlet wire terminal (2); and the secondary windings of the power supply current transformers (7) are connected with the measuring chip (6) of the electric energy meter. Through the adoption of the anti-electricity-theft electric energy meter, electricity can be supplied to the electric energy meter through the current transformers.
Description
Technical field
The utility model relates to electric field, specifically is anti-electricity-theft electric energy meter.
Background technology
Current, the status of the anti-theft electricity technology of electronic electric energy meter in the electric energy meter industry is more and more important, and the electric energy meter market in country variant, area is all requiring the anti-electricity-theft metering of electric energy meter in varying degrees.Moving or removing connection box of electric energy meter is a kind of of electricity filching behavior, shows as and removes a road in the ammeter wiring, and electricity filching person removes zero line usually; Make ammeter not have the entering of line voltage; Thereby remove voltage, causing ammeter normally not measure maybe can not work, as shown in Figure 1; Have only live wire inlet wire and live wire outlet, and do not have zero line inlet wire and zero line outlet.
The utility model content
The utility model technical matters to be solved is that providing can be through the anti-electricity-theft electric energy meter of current transformer to the electric energy meter power supply.
For solving the problems of the technologies described above; The anti-electricity-theft electric energy meter that the utility model provides; Comprise live wire input terminal, live wire outlet terminal, zero line input terminal, zero line outlet terminal; Connect the conductor of live wire input terminal and live wire outlet terminal, zero line input terminal and zero line outlet terminal respectively, the computation chip of electric energy meter also connects each conductor respectively through lead, also comprises the supply current mutual inductor; A winding of supply current mutual inductor is connected with the conductor of live wire outlet terminal with being connected the live wire input terminal, and the Secondary Winding of supply current mutual inductor connects the computation chip of electric energy meter.
After adopting above structure, the utility model compared with prior art has following advantage:
In this scheme; The power supply of electric energy meter is supplied with and is made up of two parts; The one, the principal voltage of live wire and zero line provides power supply, and another part is that power supply CT steals from electric current power supply is provided, so when removing principal voltage; The power supply that power supply CT steals from electric current still can keep electric energy meter work, carries out anti-electricity-theft measurement.
As improvement, also be provided with the detection current transformer in the described electric energy meter, detect a winding of current transformer and connect with the conductor of zero line outlet terminal with being connected the zero line input terminal, the Secondary Winding that detects current transformer connects the computation chip of electric energy meter.Detect current transformer and be used for the electric current of zero line is detected, be transported to computation chip, computation chip compares the electric current of the electric current of live wire and zero line; Judge whether two electric currents are consistent; If inconsistent, electricity filching behavior has been described, can in time call a halt.
Description of drawings
Fig. 1 is traditional electric energy list structure synoptic diagram;
Fig. 2 is the utility model anti-electricity-theft electric energy meter structural representation.
Wherein, 1, live wire input terminal; 2, live wire outlet terminal; 3, zero line input terminal; 4, zero line outlet terminal; 5, conductor; 6, computation chip; 7, supply current mutual inductor; 8, detect current transformer.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done explanation in further detail.
Can know by the utility model anti-electricity-theft electric energy meter structural representation shown in Figure 2; It comprises live wire input terminal 1, live wire outlet terminal 2, zero line input terminal 3, zero line outlet terminal 4; The copper conductor 5 that connects live wire input terminal 1 and live wire outlet terminal 2, zero line input terminal 3 and zero line outlet terminal 4 respectively; The computation chip 6 of electric energy meter also connects each conductor 5 respectively through lead; Also comprise supply current mutual inductor 7, a winding of supply current mutual inductor 7 is connected with the conductor 5 of live wire outlet terminal 2 with being connected live wire input terminal 1, and the Secondary Winding of supply current mutual inductor 7 connects the computation chip 6 of electric energy meter.
Also be provided with in the described electric energy meter and detect current transformer 8, detect a winding of current transformer 8 and connect with the conductor 5 of zero line outlet terminal 4 with being connected zero line input terminal 3, the Secondary Winding that detects current transformer 8 connects the computation chip 6 of electric energy meter.
Supply current mutual inductor 7 will also can be worked by the drive electricity table when little electric current, and when load current was 1A, a little CT provided and is equivalent to 1mA/3V usually, and this can realize anti-electricity-theft measurement for the MSP430FE42x single-chip microcomputer.
Below only use preferable instance with regard to the utility model and made explanation, but can not be interpreted as it is the restriction to claim, the structure of the utility model can have other variations, is not limited to said structure.In a word, the various variations of being done in the protection domain of all independent claims at the utility model are all in the protection domain at the utility model.
Claims (2)
1. anti-electricity-theft electric energy meter; Comprise live wire input terminal (1), live wire outlet terminal (2), zero line input terminal (3), zero line outlet terminal (4); The conductor (5) that connects live wire input terminal (1) and live wire outlet terminal (2), zero line input terminal (3) and zero line outlet terminal (4) respectively; The computation chip of electric energy meter (6) also connects each conductor (5) respectively through lead; It is characterized in that: also comprise supply current mutual inductor (7); A winding of supply current mutual inductor (7) is connected with the conductor of live wire outlet terminal (2) with being connected live wire input terminal (1), and the Secondary Winding of supply current mutual inductor (7) connects the computation chip (6) of electric energy meter.
2. anti-electricity-theft electric energy meter according to claim 1; It is characterized in that: also be provided with in the described electric energy meter and detect current transformer (8); Detect a winding of current transformer (8) and connect with the conductor of zero line outlet terminal (4) with being connected zero line input terminal (3), the Secondary Winding that detects current transformer (8) connects the computation chip (6) of electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204753261U CN202362371U (en) | 2011-11-25 | 2011-11-25 | Anti-electricity-theft electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204753261U CN202362371U (en) | 2011-11-25 | 2011-11-25 | Anti-electricity-theft electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202362371U true CN202362371U (en) | 2012-08-01 |
Family
ID=46573549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204753261U Expired - Lifetime CN202362371U (en) | 2011-11-25 | 2011-11-25 | Anti-electricity-theft electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202362371U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650424A (en) * | 2020-06-22 | 2020-09-11 | 国网福建省电力有限公司 | A method and system for monitoring anomaly of zero live wire current based on least squares method |
| CN112114272A (en) * | 2020-08-17 | 2020-12-22 | 宁波三星医疗电气股份有限公司 | Leakage current detection system and leakage current detection method for electric energy meter |
-
2011
- 2011-11-25 CN CN2011204753261U patent/CN202362371U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650424A (en) * | 2020-06-22 | 2020-09-11 | 国网福建省电力有限公司 | A method and system for monitoring anomaly of zero live wire current based on least squares method |
| CN112114272A (en) * | 2020-08-17 | 2020-12-22 | 宁波三星医疗电气股份有限公司 | Leakage current detection system and leakage current detection method for electric energy meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315191 Yinzhou Industrial Park, Zhejiang, Ningbo, Yinzhou District, Ningbo Patentee after: NINGBO SANXING MEDICAL ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo Sanxing Electric Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |