CN2921839Y - Antistealing electric power device - Google Patents
Antistealing electric power device Download PDFInfo
- Publication number
- CN2921839Y CN2921839Y CN 200520035563 CN200520035563U CN2921839Y CN 2921839 Y CN2921839 Y CN 2921839Y CN 200520035563 CN200520035563 CN 200520035563 CN 200520035563 U CN200520035563 U CN 200520035563U CN 2921839 Y CN2921839 Y CN 2921839Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- electric energy
- power
- voltage
- current
- Prior art date
- 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
Links
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
An anti-stealing electric power device, belonging to power and electronic apparatus technical field, can judge whether or not a user is stealing power and the power volume stolen by detecting the line current of the user by converting the detected value into power energy value and comparing the electric energy value with the measurement value shown on the electric energy meter of user or a related measurement device. A current transformer or a micro-resistor can be used for a current sampling circuit of the device which transmits the sampled voltage V after sampling the line current I of the user to an electric energy measurement circuit. The power energy measurement circuit can convert the value V into electric energy pulse FJ and transmit it to a power volume displaying circuit by adopting a universal circuit of V/F switching or a special chip of an electronic electric energy meter. The power volume displaying circuit can display the power volume counted by adopting a word wheel, an LED or LCD degree counter. The device can fully monitor power grid and deal with electricity stealing of any type of trick by cooperation of a movable and a fixed structure without necessity of changing on-line electric energy meter during installation or operation. The device can also be applicable to power leakage detection.
Description
1. technical field
This device against charge evasion belongs to the technical field of power electronics instrument.
2. background technology
The enforcement patent No. is that ZL02221770.3, publication number are the technology of 02113419.7 device against charge evasion, really can all-out confrontation stealing trick miscellaneous.But because the electricity consumption end detecting device of this technology stationary installation need be obtained metrical pulse from user's electric energy meter, and gives the feeder ear detecting device with the spread of the rumours mode after the encoded modulation, this part circuit is installed in the electric energy meter usually or shows in the meter cabinet.For new product or newly install the family and be out of question, but for a large amount of electric energy meters or table meter cabinet of current on-line operation, reequiping several nothings at the scene may.Though and the electricity consumption end detecting device of wheeled apparatus needn't be obtained metrical pulse from user's electric energy meter, it is the same with stationary installation, does not have electric power meter, can't judge power-steeling quantity immediately at the stealing scene.At the problems referred to above, presents has proposed improvement project.
3. summary of the invention
3.1 the purpose of this utility model is
For electric industry department provides a kind of simple in structure, easy to use, both had the function of comprehensively opposing electricity-stealing, install or needn't change online electric energy meter or relevant measuring apparatus during running again, and can detect the on-the-spot whether device against charge evasion of stealing and power-steeling quantity thereof of user of judging immediately.
3.2 the technical solution of the utility model is
By detecting the subscriber's line electric current and this detected value being scaled energy value, follow the variable of user's electric energy meter or relevant measuring apparatus to make comparisons with this energy value again, judge user whether stealing and power-steeling quantity thereof according to this.
Fig. 1 is basic scheme and and the signal of operational relations such as user's electric energy meter, customer charge thereof of this device FQ.FQ contains circuit such as current sample, electric energy metrical and electric weight demonstration.Wherein current sampling circuit can adopt current transformer or little value resistor, and after to the sampling of user's current i, V delivers to ic for energy metering sampled voltage.Ic for energy metering can adopt the universal circuit of V/F conversion or the special chip of electronic electric energy meter, and the V value is scaled electric energy metrical pulse FJ, delivers to the electric weight display circuit.The electric weight display circuit can adopt type drum, LED or LCD register, shows the power consumption of this subscriber's line during detected.This power consumption and user's electric energy meter or the relevant measuring apparatus variable during same is made comparisons, can judge this user whether stealing and power-steeling quantity thereof then and there.
3.3 implement the effect of present technique
Because this device directly from the electrical network sampling, therefore can change online electric energy meter or relevant measuring apparatus when installing or operate.
Because the variable of available Device Testing value and user's electric energy meter is made comparisons, therefore can judge user whether stealing and power-steeling quantity thereof at the scene immediately.
But wheeled apparatus maneuver, and stationary installation can 24 hours monitor full time electrical networks, and both are combined, and learn from other's strong points to offset one's weaknesses can the overall monitor electrical network, tackles any type of stealing trick.In addition, this device also can be used for detection of electrical leakage.
4. description of drawings
Fig. 1 is basic scheme and and the signal of operational relations such as user's electric energy meter, customer charge thereof of this device FQ.
Fig. 2 drives the bidirectional pulse motor M to drive the circuit of type drum register.
Fig. 3 is the scheme that the ic for energy metering of FQ adopts the V/F translation circuit.
Fig. 4 is a kind of ic for energy metering that adopts the electronic electric energy meter special chip.
Fig. 5 is the topology example of attenuating network.
Fig. 6 is a kind of scheme of three-phase device against charge evasion.
5. embodiment
5.1 one of embodiment
The ic for energy metering of this device can adopt the general scheme of V/F conversion, and V is scaled electric energy metrical pulse FJ current sample voltage, delivers to the driving circuit of type drum register shown in Figure 2.For this reason, the FQ among Fig. 1 also can state Fig. 3 as.
IC is a d type flip flop among Fig. 2, and C is that pulsewidth is set capacitor, and M is the bidirectional pulse motor that drives type drum.The D of IC is connected to
End, FJ add to CP end, be connected to after M and the C series connection Q and
End.After FJ sends into, cause Q and
The alternate of end level height is exported the certain bidirectional pulse of width by C, drives M to drive the type drum metering.Adjust the parameter of V/F translation circuit, the metering constant of FJ and type drum is equated, the FJ sequence of then sending into, just accumulative total is corresponding energy value.
Except adopting this mechanical register of type drum, also can deliver to FJ have counting, the circuit of functions such as storage, decoding, driving, with electronics registers such as driving LED or LCD.The mechanism of foregoing circuit is known.
5.2 two of embodiment
The ic for energy metering of this device can adopt the special chip of electronic electric energy meter.
When this programme applies to portable device against charge evasion, the circuit of available Fig. 4 example.
H is a split core type current transformer among the figure.IC
1Be the special chip of electronic electric energy meter, can select AD7751 etc. for use.IC
2Be voltage comparator, can select LM311 etc. for use.The topology example of attenuating network is in Fig. 5: work as J
1～J
3One of when connecting, relevant R
5～R
7One of with regard to short circuit.And K
1～K
3One of when connecting, relevant R
8～R
10One of just and place in circuit.Set the resistance and the number thereof of resistor rightly, and the combination of utilization J and K, just can obtain required pad value.C
1～C
6It is filter capacitor.IC
2And accessory circuit is formed the permanent width of cloth voltage source of 50HZ.R wherein
1And D
1, D
2Form clamping circuit, IC
2The voltage magnitude of in-phase input end is clamped down at D
1, D
2Threshold value within.R
2And R
3Form divider, get R
2On forward voltage V
3Add to IC
2Inverting input.V
3Height determine the initial variable of this device, IC in the time of generally can reaching the 0.1A left and right sides by i
2Just can normally overturn to be as the criterion and set.R
4Be IC
2Open leakage pull-up resistor.
From the induced potential V that H obtains, the one tunnel behind attenuation network A, obtains the current sampling signal V that is directly proportional with i
1, deliver to IC
15,6 pin between; Another road is added on IC through clamping circuit
2In-phase input end, though when this voltage be negative polarity or for positive polarity less than V
3The time, IC
2Be output as 0, have only when being added on the positive polarity voltage amplitude of in-phase end greater than V
3The time, IC
2Just overturn and the output high level.Therefore, IC
2Amplitude with the V that i becomes, is transformed into the direct impulse voltage of the permanent width of cloth.This voltage obtains one and the proportional voltage sampling signal V of line voltage behind attenuation network B
2, be added to IC
17,8 pin between.IC
1According to V
1, V
2Product, be converted into electric energy metrical pulse, wherein low-frequency bidirectional pulse is exported from 23,24 pin, for driving M to drive usefulness such as type drum metering; High-frequency direct impulse is exported from 22 pin, for work indication, verification or and usefulness such as other circuit, equipment interface.
When this programme applied to fixed device against charge evasion, its current sampling circuit was except that the current transformer of possible constructions closure, and also available little value resistor is sampled, simultaneously voltage sampling signal V
2, also can directly take from line voltage by attenuating network.
5.3 three of embodiment
The three-phase device against charge evasion can be with scheme shown in Figure 6.Respectively to three-phase current i
A, i
B, i
CSample, obtain sampled voltage V
A, V
BAnd V
C, deliver to summing circuit, obtain three-phase current sampled voltage V=V
A+ V
B+ V
C, V is converted into three-phase electric energy metering pulse FJ after delivering to the V/F translation circuit, and FJ delivers to the electric weight display circuit again.The also special chip of available three-phase electric energy meter as AT73C502 etc., is finished in the above-mentioned flow process from summation to the task of driving register.
Claims (5)
1. device against charge evasion, it is characterized in that: it contains current sample, electric energy metrical and electric weight display circuit; Wherein current sampling circuit is after sampling to the subscriber's line current i, V delivers to ic for energy metering sampled voltage, ic for energy metering is scaled electric energy metrical pulse FJ to the V value, deliver to the electric weight display circuit, the electric weight display circuit shows the power consumption of this subscriber's line during detected, this power consumption is made comparisons with the variable of user's electric energy meter or relevant measuring apparatus, can judge this user whether stealing and power-steeling quantity thereof then and there.
2. device against charge evasion as described in claim 1, it is characterized in that: wherein current sampling circuit can adopt current transformer or little value resistor, ic for energy metering can adopt the universal circuit of V/F conversion or the special chip of electronic electric energy meter, and the electric weight display circuit can adopt character wheel sign indicating number, LED, LCD register.
3. device against charge evasion as described in claim 2, it is characterized in that: when ic for energy metering adopts the V/F translation circuit, its electric energy metrical pulse FJ, can deliver to by d type flip flop IC and pulsewidth and set the driving circuit that capacitor C forms, drive the bidirectional pulse motor M, to drive the type drum metering; This FJ also can deliver to have counting, storage, decoding, drives the circuit of function, with driving LED or LCD register.
4. a device against charge evasion as described in claim 2 is characterized in that: when ic for energy metering adopts the special chip of electronic electric energy meter, in this circuit of wheeled apparatus, have one by voltage comparator ic
2And the permanent width of cloth voltage source of the 50HZ of accessory circuit composition, be used to provide voltage sampling signal V
2, a road of current transformer H induced potential V is via R
1And D
1, D
2The clamping circuit of forming is delivered to IC
2In-phase input end and by R
2, R
3Be added on IC after the dividing potential drop
2The voltage V of inverting input
3Compare, original amplitude with the V that i becomes, is transformed into the direct impulse voltage of the permanent width of cloth, behind attenuation network B, export one and the proportional voltage sampling signal V of line voltage
2In this circuit of stationary installation, voltage sampling signal V
2, can directly take from line voltage by attenuating network.
5. a device against charge evasion as described in claim 1 is characterized in that: in the three-phase device against charge evasion, have respectively to three-phase current i
A, i
B, i
CThe current sampling circuit of sampling, the V that sampling is obtained
A, V
B, V
CThe summing circuit of summation, the V that the handlebar summation obtains is converted into V/F translation circuit and the electric weight display circuit of three-phase electric energy metering pulse FJ; Also can adopt the special chip of three-phase electric energy meter, finish from summation to the task of driving register.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035563 CN2921839Y (en) | 2005-09-26 | 2005-09-26 | Antistealing electric power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035563 CN2921839Y (en) | 2005-09-26 | 2005-09-26 | Antistealing electric power device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2921839Y true CN2921839Y (en) | 2007-07-11 |
Family
ID=38254319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035563 Expired - Fee Related CN2921839Y (en) | 2005-09-26 | 2005-09-26 | Antistealing electric power device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2921839Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968504A (en) * | 2010-09-16 | 2011-02-09 | 浙江永昌仪表有限公司 | Electricity stealing detecting comparison meter, power supply network capable of detecting electricity stealing and electricity stealing detection method |
| CN102193013A (en) * | 2010-03-08 | 2011-09-21 | Ls产电株式会社 | Apparatus and method for detecting power |
| CN103698567A (en) * | 2013-12-03 | 2014-04-02 | 国家电网公司 | Image recognition type electricity stealing prevention device |
| CN105807112A (en) * | 2016-03-28 | 2016-07-27 | 国家电网公司 | Intelligent electric meter with uncovering alarming function and uncovering alarming method |
| CN108493925A (en) * | 2018-03-15 | 2018-09-04 | 保定市睿为电气科技有限公司 | A kind of exchange electrode difference protection and electric energy intelligent management integration unit |
| CN109596872A (en) * | 2019-02-20 | 2019-04-09 | 上海艾临科智能科技有限公司 | Portable detection device of opposing electricity-stealing |
| CN109932584A (en) * | 2017-12-18 | 2019-06-25 | 中国科学院沈阳自动化研究所 | The multicomponent coding rapid detection method of smart grid-oriented malicious user positioning |
-
2005
- 2005-09-26 CN CN 200520035563 patent/CN2921839Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193013A (en) * | 2010-03-08 | 2011-09-21 | Ls产电株式会社 | Apparatus and method for detecting power |
| CN101968504A (en) * | 2010-09-16 | 2011-02-09 | 浙江永昌仪表有限公司 | Electricity stealing detecting comparison meter, power supply network capable of detecting electricity stealing and electricity stealing detection method |
| CN103698567A (en) * | 2013-12-03 | 2014-04-02 | 国家电网公司 | Image recognition type electricity stealing prevention device |
| CN105807112A (en) * | 2016-03-28 | 2016-07-27 | 国家电网公司 | Intelligent electric meter with uncovering alarming function and uncovering alarming method |
| CN105807112B (en) * | 2016-03-28 | 2018-10-26 | 国家电网公司 | Has the intelligent electric meter for alarm function of uncapping and alarm method of uncapping |
| CN109932584A (en) * | 2017-12-18 | 2019-06-25 | 中国科学院沈阳自动化研究所 | The multicomponent coding rapid detection method of smart grid-oriented malicious user positioning |
| CN108493925A (en) * | 2018-03-15 | 2018-09-04 | 保定市睿为电气科技有限公司 | A kind of exchange electrode difference protection and electric energy intelligent management integration unit |
| CN109596872A (en) * | 2019-02-20 | 2019-04-09 | 上海艾临科智能科技有限公司 | Portable detection device of opposing electricity-stealing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2921839Y (en) | Antistealing electric power device | |
| CN202433517U (en) | Portable EMC (electromagnetic compatibility) test-level detecting device for electric energy meter | |
| CN204166050U (en) | Can the anti-electricity-theft intelligent power gauging table of remote meter reading | |
| CN109001665A (en) | A kind of calibration equipment suitable for charging equipment direct current energy | |
| CN205210166U (en) | Electric detection means is stolen in reposition of redundant personnel | |
| CN107315122B (en) | Fill electric pile testing arrangement | |
| CN103278679A (en) | Comparison circuit for electric energy measuring chip | |
| CN203502555U (en) | Electrical characteristic detecting device for multifunctional high-voltage circuit breaker | |
| CN104950176A (en) | Non-contact internal resistance measuring device for energy storage systems of electric vehicles | |
| CN110456138A (en) | A kind of electric current detecting method, device and housed device | |
| CN204597537U (en) | A kind of charging electric vehicle rifle | |
| CN201293825Y (en) | Device for testing battery internal resistance | |
| CN205620534U (en) | Ammeter investigation appearance of visiting one house after another | |
| CN209311572U (en) | A kind of electric automobile insulation resistance detecting circuit based on Injection Signal | |
| CN106501725A (en) | A kind of battery pack open circuit detection method and device | |
| CN104678349A (en) | Interface detection device for electric energy meter and system of interface detection device | |
| CN205751741U (en) | A kind of Multifunction transformer degaussing gear | |
| CN112379220B (en) | Ground fault positioning system and method based on distribution transformer injection pulse | |
| CN104407271A (en) | Signal receiver for cable identification device | |
| CN201397378Y (en) | Power system stabilizer test waveform recorder for detecting uncompensated property of excitation system of generator | |
| CN207067288U (en) | A kind of charging pile test device | |
| CN208780753U (en) | Intelligent electric meter for base station electricity consumption differentiation and electric energy management system | |
| CN206411997U (en) | Intelligent electric meter gathers O＆M actual training device | |
| CN1940577A (en) | Device against charge evasion | |
| CN107390158B (en) | Automobile charging pile system and method capable of carrying out electric energy metering virtual load test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070711 Termination date: 20100926 |