CN204855612U - Thief -proof electric leakage device of power supply line - Google Patents
Thief -proof electric leakage device of power supply line Download PDFInfo
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- CN204855612U CN204855612U CN201520572866.XU CN201520572866U CN204855612U CN 204855612 U CN204855612 U CN 204855612U CN 201520572866 U CN201520572866 U CN 201520572866U CN 204855612 U CN204855612 U CN 204855612U
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Abstract
The utility model provides a thief -proof electric leakage device of power supply line, burden accuse measurement monitor terminal has been met on the three -phase circuit of power supply line, burden accuse measurement monitor terminal be equipped with wireless communication module, thief -proof electric leakage device includes: three alternating current caliber connects respectively on the cable of power supply line, the alternating current caliber includes SOC measurement chip RN8213, and it is external respectively to have alternating current to measure simulation volume regulator circuit, button liquid crystal display circuit and zigBee wireless communication module, SOC measurement chip pass through zigBee wireless communication module with the communication of burden accuse measurement monitor terminal. The utility model discloses can scientific and reasonable ground judge whether steal the electric leakage, and small, the consumption is little, with low costs and simple to operate's thief -proof hourglasss current monitoring module, is suitable for big, the various kilowatt -hour meter operating condition extensively of long -term online monitoring volume.
Description
Technical field
The utility model relates to the thief-proof electric leakage device of a kind of power industry supply line.
Background technology
Electricity filching person is in order to reach stealing object, various stealing gimmick is often adopted to carry out stealing, gimmick is multifarious, but change ten thousand times without leaving the original aim or stand, modal is start with from electric energy metrical principle: electric energy meter metering electricity number, depend mainly on voltage (V), electric current (I), power factor (cos φ) three elements and the product of time.Because the voltage of electricity consumption can not be changed by electricity filching means substantially, according to principle E=∫ P (t) dt of active energy metering, P (t)=V (t) I (t), known stealing is actual is that the galvanometer amount of measuring terminal is diminished, make ammeter slow-speed, stall even reverses, thus reach the object of stealing.Electricity filching person is reduced foreign current by external means, as utilized the error connection to watt-hour meter: be included on watt-hour meter connection terminal and juggle things, be also included within the upper cheating of CT (current transformer for metering) and PT (metering voltage transformer (VT)), all belong to technology stealing category.In addition, by adopting the gimmick of the structural behaviour changing ammeter itself, making ammeter slow-speed, also can implement electricity filching behavior.
Stealing and measuring apparatus fault cause the electricity charge to leak receipts, few receipts make electric system benefit damage, and in the last 100 years since electricity becomes commodity, stealing and the struggle of opposing electricity-stealing are being carried out always intensely.Market successively occurs a lot of product is attempted to solve current mode stealing problem, but mostly there is different defects.As current monitoring value is defined as 0 or 3%I by some producers
b, 30%I
b, owe scientific, unreasonable like this, be difficult to promote.Such as rated current supervision value is the situation of 0, and when watt-hour meter input current is 0, calculagraph is cheaply judged to power stealing and gives timing.Also be judged to stealing when user's not electricity consumption like this, user can not accept certainly.Other instruments belong to device or system substantially, and volume is large, and price is high, are only applicable to power department and detect or take a sample test, and be unsuitable for large, the wide various watt-hour meter duties of long-term online supervision amount.
Utility model content
Technical problem to be solved in the utility model, just be to provide on a kind of service cable be arranged on measuring terminal, can judge whether scientifically and rationally to steal electric leakage, and the thief-proof leakage current monitoring module that volume is little, power consumption is little, cost is low and easy for installation, be suitable for the various watt-hour meter duties that long-term online supervision amount is large, wide.
Solve the problems of the technologies described above, the technical solution adopted in the utility model is:
The thief-proof electric leakage device of a kind of supply line, the three-phase circuit of described supply line is connected to negative control measure monitor terminal, described negative control measure monitor terminal is provided with wireless communication module, it is characterized in that: described thief-proof electric leakage device comprises:
Three ac current measurement devices, be connected on the cable of described supply line respectively, composition and the annexation of described ac current measurement device are: a SOC computation chip RN8213, it is circumscribed with ac current measurement analog quantity Circuit tuning, button liquid crystal display circuit and ZigBee wireless communication module respectively, and SOC computation chip is by ZigBee wireless communication module and described negative control measure monitor terminal called.
Composition and the annexation of described ac current measurement analog quantity Circuit tuning are: the output of current input terminal J3 returns after the first magnetic bead device FB6, the first resistance R11 and the second magnetic bead device FB5, one end output current network label I1+ after the second resistance R15 of first time resistance R11, other end output current network label I1-after the 3rd resistance R13 of first time resistance R11, the output terminal of the second resistance R15 also ground connection after the first electric capacity C53 simultaneously, the output terminal of the 3rd resistance R13 also ground connection after the second electric capacity C52 simultaneously.
Described ac current measurement device adopts powered battery.
A beneficial effect: existing current measuring device to have a significantly shortcoming, can not carry out communication with the modern smart machine such as computing machine exactly.The ac current measurement device that the utility model increases adopts serial communication, by standard for serial communication interface, has the characteristic of modern communication systems.Coordinate the negative control measure monitor terminal of onsite application, realize data transmission easily and current sample synchronous.By judging the mean value error size of the same time period electric current in each monitoring point, analyzing and judging whether circuit exists drain conditions steathily
Accompanying drawing explanation
Fig. 1 is composition and the annexation schematic diagram of the utility model embodiment;
Fig. 2 is ac current measurement device theory diagram;
Fig. 3 is RN8213 governor circuit figure;
Fig. 4 is ac current measurement analog quantity Circuit tuning;
Fig. 5 is ZigBee wireless communication module;
Fig. 6 is button liquid crystal display circuit.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in detail.
As depicted in figs. 1 and 2, the thief-proof electric leakage device embodiment of supply line of the present utility model, the three-phase circuit of supply line is connected to negative control measure monitor terminal, negative control measure monitor terminal is provided with wireless communication module, thief-proof electric leakage device comprises: three adopt battery powered ac current measurement device, be connected on respectively on the cable of supply line, the composition of ac current measurement device and annexation are: comprise a SOC computation chip RN8213, it is circumscribed with ac current measurement analog quantity Circuit tuning respectively, button liquid crystal display circuit and ZigBee wireless communication module, SOC computation chip is by ZigBee wireless communication module and described negative control measure monitor terminal called.
Composition and the annexation of described ac current measurement analog quantity Circuit tuning are: the output of current input terminal J3 returns after the first magnetic bead device FB6, the first resistance R11 and the second magnetic bead device FB5, one end output current network label I1+ after the second resistance R15 of first time resistance R11, other end output current network label I1-after the 3rd resistance R13 of first time resistance R11, the output terminal of the second resistance R15 also ground connection after the first electric capacity C53 simultaneously, the output terminal of the 3rd resistance R13 also ground connection after the second electric capacity C52 simultaneously.Circuit is as Fig. 3 ~ 6.
The utility model ac current measurement device only gathers electric current, easy for installation, can be arranged on the cable of supply line.Coordinate the negative control measure monitor terminal of onsite application, ac current measurement device, on the one hand by gathering, inner algorithm calculates, and obtains the monitor value of electric current on circuit; By wireless telecommunications, data are sent to terminal on the other hand.Negative control measure monitor terminal is compared to the current average that current monitor and self same period are sampled, and when the two error exceeds limit value, judges the situation that there is tax evasion electricity above circuit.
Claims (3)
1. the thief-proof electric leakage device of supply line, the three-phase circuit of described supply line is connected to negative control measure monitor terminal, described negative control measure monitor terminal is provided with wireless communication module, it is characterized in that: described thief-proof electric leakage device comprises:
Three ac current measurement devices, be connected on the cable of described supply line respectively, described ac current measurement device comprises a SOC computation chip (RN8213), it is circumscribed with ac current measurement analog quantity Circuit tuning, button liquid crystal display circuit and ZigBee wireless communication module respectively, and SOC computation chip is by ZigBee wireless communication module and described negative control measure monitor terminal called.
2. the thief-proof electric leakage device of supply line according to claim 1, it is characterized in that: composition and the annexation of described ac current measurement analog quantity Circuit tuning are: the output of current input terminal (J3) is through the first magnetic bead device (FB6), return after first resistance (R11) and the second magnetic bead device (FB5), one end output current network label I1+ after the second resistance (R15) of the first resistance (R11), other end output current network label I1-after the 3rd resistance (R13) of first time resistance (R11), the output terminal of the second resistance (R15) also ground connection after the first electric capacity (C53) simultaneously, the output terminal of the 3rd resistance (R13) also ground connection after the second electric capacity (C52) simultaneously.
3. the thief-proof electric leakage device of supply line according to claim 2, is characterized in that: described ac current measurement device adopts powered battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520572866.XU CN204855612U (en) | 2015-07-30 | 2015-07-30 | Thief -proof electric leakage device of power supply line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520572866.XU CN204855612U (en) | 2015-07-30 | 2015-07-30 | Thief -proof electric leakage device of power supply line |
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| Publication Number | Publication Date |
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| CN204855612U true CN204855612U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520572866.XU Active CN204855612U (en) | 2015-07-30 | 2015-07-30 | Thief -proof electric leakage device of power supply line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098712A (en) * | 2020-07-28 | 2020-12-18 | 宁波三星医疗电气股份有限公司 | Electricity larceny prevention method |
-
2015
- 2015-07-30 CN CN201520572866.XU patent/CN204855612U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098712A (en) * | 2020-07-28 | 2020-12-18 | 宁波三星医疗电气股份有限公司 | Electricity larceny prevention method |
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| GR01 | Patent grant |