CN203870139U - Current comparison electricity leakage prevention device - Google Patents
Current comparison electricity leakage prevention device Download PDFInfo
- Publication number
- CN203870139U CN203870139U CN201420269485.XU CN201420269485U CN203870139U CN 203870139 U CN203870139 U CN 203870139U CN 201420269485 U CN201420269485 U CN 201420269485U CN 203870139 U CN203870139 U CN 203870139U
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- China
- Prior art keywords
- current
- chip
- thief
- caliber
- alternating current
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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 - Fee Related
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- 230000005611 electricity Effects 0.000 title abstract description 11
- 230000002265 prevention Effects 0.000 title 1
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 11
- 239000013642 negative control Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The utility model discloses a current ratio is to thief-proof electric leakage device is equipped with the alternating current caliber on the cable of power supply line or current row, the alternating current caliber is connected with the battery, the alternating current caliber is connected with burden accuse measurement monitor terminal communication. The main circuit of the power supply circuit comprises an SOC metering chip RN8211 chip. The RN8211 chip consists of an M0 core MCU and a voltage and current metering module. The utility model discloses the alternating current caliber adopts serial communication, with the help of serial communication standard interface, has modern communication system's characteristic. And the synchronization of data transmission and current sampling is conveniently realized by matching with a load management terminal or a distribution transformer monitoring and metering terminal used on site. And analyzing and judging whether the circuit has the condition of electricity stealing and leakage by judging the average error of the current of each monitoring point in the same time period.
Description
Technical field
The utility model relates to the thief-proof electric leakage device of a kind of power industry, more particularly, relates to a kind of current ratio to thief-proof electric leakage device.
Background technology
Electricity filching person is in order to reach stealing object, often adopt various stealing gimmicks to carry out stealing, gimmick is multifarious, but change ten thousand times without leaving the original aim or stand, modal is to start with from electric energy metrical principle: electric energy meter metering electric weight 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 change 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 little the galvanometer quantitative change of measuring terminal, ammeter slow-speed, stall are even reversed, thereby reach the object of stealing.Electricity filching person reduces 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, change the gimmick of the structural behaviour of ammeter itself by employing, make ammeter slow-speed, also can implement electricity filching behavior.
Stealing and measuring apparatus fault cause the electricity charge to leak and receive, few receipts makes electric system benefit damage, and in the last 100 years since electricity becomes commodity, stealing is being carried out with the struggle of opposing electricity-stealing always intensely.On market, successively occur that a lot of product technologies attempt to solve current mode stealing problem, but much all existed different defects.As some producers are defined as 0 or 3%I by current monitoring value
b, 30%I
b, owe scientific, unreasonable, be difficult to promote.Such as the situation that rated current supervision value is 0, in the time that watt-hour meter input current is 0, calculagraph is cheaply judged to power stealing and gives timing.In the time of not electricity consumption of user, be also judged to stealing 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
In order to overcome above-mentioned technological deficiency, the utility model provides a kind of current ratio to thief-proof electric leakage device.
It is as described below that the utility model solves the technical scheme that its technical matters adopts: a kind of current ratio is to thief-proof electric leakage device, it is characterized in that, on the cable of supply line or electric current row, be provided with ac current measurement device, described ac current measurement device is connected with battery, and described ac current measurement device is connected with negative control measure monitor terminal called.
The main circuit of described supply line comprises SOC computation chip RN8211 chip.
Described RN8211 chip is made up of M0 core MCU and voltage, electric current metering module.
Described ac current measurement device is connected with negative control measure monitor terminal with wireless communication module by the serial ports on RN8211 chip.
According to above-mentioned the utility model, its beneficial effect is, the utility model ac current measurement device adopts serial communication, by standard for serial communication interface, has the characteristic of modern communication systems.The negative control measure monitor terminal that coordinates scene to use, realizes data transmission easily and current sample is synchronous.By judging the mean value error size of the same time period electric current in each monitoring point, analyze and judge on circuit, whether have the electric situation of tax evasion.
Brief description of the drawings
Below in conjunction with accompanying drawing and embodiment, the utility model is described further.
Fig. 1 is the utility model structural drawing.
Embodiment
As shown in Figure 1, a kind of current ratio of the utility model, to thief-proof electric leakage device, is set up an ac current measurement device in supply line, ac current measurement device is connected with battery, and adopting powered battery, volume is small and exquisite, can be arranged on the cable or electric current row of supply line.The main circuit of supply line comprises SOC computation chip RN8211 chip, and RN8211 chip is made up of M0 core MCU and voltage, electric current metering functional module, can realize the read out function of real-time current continuous data; Ac current measurement device coordinates the on-the-spot negative control measure monitor terminal using, ac current measurement device is connected with wireless communication module by the serial ports on RN8211 chip with negative control measure monitor terminal, realizes that wireless communication function is carried out data transmission and current sample is synchronous.In the time that ac current measurement device exceeds limit value with the current average error of the same period sampling of negative control measure monitor terminal, can judge the situation that has tax evasion electricity above circuit.
Claims (4)
1. current ratio, to a thief-proof electric leakage device, is characterized in that, on the cable of supply line or electric current row, is provided with ac current measurement device, and described ac current measurement device is connected with battery, and described ac current measurement device is connected with the negative measure monitor terminal called of controlling.
2. a kind of current ratio according to claim 1, to thief-proof electric leakage device, is characterized in that, the main circuit of described supply line comprises SOC computation chip RN8211 chip.
3. a kind of current ratio according to claim 2, to thief-proof electric leakage device, is characterized in that, described RN8211 chip is made up of M0 core MCU and voltage, electric current metering module.
4. a kind of current ratio according to claim 1, to thief-proof electric leakage device, is characterized in that, described ac current measurement device is connected with negative control management terminal with wireless communication module by the serial ports on RN8211 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420269485.XU CN203870139U (en) | 2014-05-23 | 2014-05-23 | Current comparison electricity leakage prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420269485.XU CN203870139U (en) | 2014-05-23 | 2014-05-23 | Current comparison electricity leakage prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203870139U true CN203870139U (en) | 2014-10-08 |
Family
ID=51651079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420269485.XU Expired - Fee Related CN203870139U (en) | 2014-05-23 | 2014-05-23 | Current comparison electricity leakage prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203870139U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649662A (en) * | 2020-12-02 | 2021-04-13 | 贵州电网有限责任公司 | Distribution network line fault metering device based on voltage characteristics |
-
2014
- 2014-05-23 CN CN201420269485.XU patent/CN203870139U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649662A (en) * | 2020-12-02 | 2021-04-13 | 贵州电网有限责任公司 | Distribution network line fault metering device based on voltage characteristics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20150523 |
|
| EXPY | Termination of patent right or utility model |