CN2247816Y - Single phase electric energy meter capable of avoiding fraudulent use of power - Google Patents
Single phase electric energy meter capable of avoiding fraudulent use of power Download PDFInfo
- Publication number
- CN2247816Y CN2247816Y CN 96208773 CN96208773U CN2247816Y CN 2247816 Y CN2247816 Y CN 2247816Y CN 96208773 CN96208773 CN 96208773 CN 96208773 U CN96208773 U CN 96208773U CN 2247816 Y CN2247816 Y CN 2247816Y
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- electric energy
- circuit
- energy meter
- electricity
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Abstract
The utility model relates to a single-phase electric energy meter with electricity penalty and theft prevention. On the basis of a normal electric energy meter, the utility model is additionally provided with two sets of circuits which pick electricity theft signals and recognizes an amplifying circuit, a delay circuit, an electricity penalty indication circuit, an electricity penalty actuating mechanism, a power supply protection circuit, etc. The utility model can correctly meter electric energy, equitably recognize various electricity theft modes, automatically carries out electricity penalty treatment, and actually meets the purpose of electricity theft prevention, with the advantages of low cost, high anti-interference performance, etc.
Description
The utility model relates to the punishing electricity-stolen single-phase electric energy meter.
The purpose of punishing electricity-stolen is to prevent the generation of electricity filching behavior, thereby plays anti-electricity-theft effect.Though existing have the electric energy meter technology of a lot of relevant punishment stealing formulas and type to obtain national patent respectively, but to so far, really obtain implementing to apply but seldom, though its reason is many, but topmost still respectively have have following deficiency: 1. when situation that Leaked Current of Line to Ground appears in the circuit or the electrical appliance of electricity consumer, the punishing electricity-stolen system of electric energy meter does not add identification and just penalizes electric treatment, and this owes justice.2. when the Performance Detection test of carrying out shock-resistant wave voltage and pulse voltage, misoperation easily takes place in the punishing electricity-stolen system of electric energy meter, obviously is poor reliability.3. power consumption when the punishing electricity-stolen system and device is static.4. price is higher.
The purpose of this utility model is to overcome the deficiency of above-mentioned existence, can execute conscientiously and provide a kind of in addition, and price is lower, well behaved punishing electricity-stolen single-phase electric energy meter.
The measure that the utility model is taked is: on the basis of common single-phase electric energy meter, is equipped with two groups and picks up the stealing signal circuit, and the identification amplifying circuit, delay circuit is penalized electricity and indicating circuit and is penalized electrical actuators, power supply and holding circuit.
Structure of the present utility model is: B
1-A is former electric energy meter potential winding, and J is that the primary voltage coil connects the power source voltage hook, and L is the current coil of former electric energy meter, and the circuit arrangement that is added has, and A. picks up the stealing signal circuit for two groups, and first group of circuit is by differential mutual inductor B
2, building-out capacitor C
1, switching diode VD
1, commutation diode VD
2, protection diode VD
3And form; Second group of circuit is by current phase mutual inductor B
3, building-out capacitor C
2, switching diode VD
4, commutation diode VD
5And form B wherein
2Primary coil be B
2-L
1And B
2-L
2, secondary coil is B
2-L
3, B
3Primary coil be B
3-L
1, secondary coil is B
3-L
2B. discerning amplifying circuit, is by transistor VT
1, pull-up resistor R
1, filter capacitor C
3And form.C. delay circuit is by the time resistance R
2, the time capacitor C
4And form.D. penalizing electricity and indicating circuit and penalize electrical actuators, is by current-limiting resistance R
3, semiconductor complex pipe VT
2-3, shunt resistance R
4, LED, have clutch coupling dc small motor M and form, when wherein M is static, separate between the aluminium dish of the power wheel of its clutch coupling and electric energy meter and do not contact with each other, when M energising work, little direct current motor drives clutch coupling makes power wheel remove to contact electric energy meter aluminium dish, and drive aluminium dish quick rotation, thereby reach the purpose of penalizing electricity.E. power supply and holding circuit are by rectifier bridge VD
6-VD
9, filter capacitor C
5, ptc material thermistor R
T, power coil B
1-B, continued access capacitor C
6And form B wherein
1-B is around B
1On-the A, as long as B
1-A incoming transport electricity B
1-B just has alternating current output.R
TEffect be, when unusual big electric current appears in circuit, R
TResistance become high resistant by low-resistance, thereby can holding circuit and the safety of electric energy meter.
Be the drawing explanation of accompanying drawing below:
Fig. 1 is the utility model block scheme.
Fig. 2 is one of the utility model conspectus.
Fig. 3 is two of the utility model conspectus.
The utility model is existing will to be described in further detail in conjunction with the embodiments with accompanying drawing:
When normal wiring electricity consumption, B flows through
2Middle B
2-L
1With B
2-L
2Electric current be opposite sign but equal magnitude, composite magnetic power is zero, B
2-L
3There is not output signal voltage to give VT
1, it is idle penalizing circuit and penalizing electrical actuators, though electric current is through B
3-L
1The time, B
3-L
2Can induce signal voltage and through VD
4Give VT after the half-wave rectification
1Base stage, but because of supplying with VT
1Work also be the half-wave rectification power supply, have a mind to during design implementation again delivering to it and this moment VT
1The phase place of the half-wave rectification signal of base stage staggers mutually, clearly VT
1Can not amplify work, therefore also not have signal voltage to go to promote to penalize circuit and penalize electrical actuators work, this moment, electric energy meter correctly measured electric energy by normal electricity consumption situation.When situation that Leaked Current of Line to Ground appears in the circuit or the electrical appliance of electricity consumer, because the B that flows through
2Middle B
2-L
1Electric current greater than the B that flows through
2-L
2Electric current, so B
2-L
3Induce signal voltage through VD
2VT is given in rectification
1Base stage, but also have a mind to during because of design implementation the phase place of this half-wave voltage signal voltage with supply with VT
1So the phase shifting of the half-wave DC power supply of work is VT
1Still can not work, at this moment electric energy meter measures electric energy by the leakage current size.
When electricity filching person utilized the wiring of electric energy meter to implement the stealing trick, such as with lead short circuit electric energy meter phase line input and output wiring 1,3 end, attempt made the electric energy meter slow-speed and when carrying out stealing, B flows through
2Middle B
2-L
2Electric current greater than the B that flows through
2-L
1Electric current, so B
2-L
3Induce the stealing signal voltage, through VD
2Deliver to VT after the rectification
1Base stage since the phase place of this signal voltage with supply with VT
1The phase place of the power supply of operate as normal is identical, at this moment VT
1Can amplify this signal and through C
3After the filtering from R
1Take out, through R
2, C
4Pass through R behind the suitable time-delay
3Remove to promote VT
2-3Conducting work, B
1Alternating current on the-B is through VD
6-VD
9Rectification C
5After the filtering, now pass through VT
2-3Power to M, after the M energising work, contact with electric energy meter aluminium dish by power wheel, and drive aluminium dish quick rotation and penalize electric treatment, penalize electric purpose to reach, at this moment M two ends and the LED that connects also give luminous indication, when electricity filching person is implemented transposing electric energy meter phase line input and output 1,3 terminated lines or 1,3 terminals add reverse low-voltage, high-current or transposing phase line zero line incoming line 1,4 terminated lines and bury the ground wire electricity consumption in addition or switch input and output wiring or the like the stealing trick of phase line zero line fully and when attempting to make electric energy meter slow-speed, stall, counter-rotating stealing, because from B
2-L
3Or B
3-L
2The stealing signal voltage that induces, its phase place all with supply with VT
1The phase place of the power supply of operate as normal is identical, and the former capital can make VT
1Amplification work, obviously thereafter penalize electric shape feelings and result just preceding described.When electricity filching person disengagement J attempt made electric energy meter dead electricity stall stealing, electricity was in C is arranged
6Existence, the purpose of stealing can not reach.
When carrying out shock-resistant wave voltage and pulse voltage performance test or former thereby when producing undesired signal and occurring, C in the circuit by other
1C
2The corresponding undesired signal of energy filtering, TV
1Can intercept the undesired signal of the phase place that staggers, R
2C
4Can resistance filter leakage rush remaining undesired signal, undesired signal is can't reach to promote to make VT in a word
2-3Work, it is non-existent therefore penalizing electric misoperation.
B in the circuit
2B
3, only consider output signal voltage during design implementation, need not to consider power output, so when first coil passed through big electric current, the signal voltage that secondary coil induces was can be very not high, has added VD
1VD
3VD
4Reinforcement protection, add to VT
1Signal voltage on the base stage is safe.
The utility model penalizes electricity targetedly to whether real stealing has very strong recognition capability, has anti-interference false action-proof performance good again, static state is power consumption hardly, the advantage that cost is lower, this is that now existing technology is all incomparable, is that practical reference value is arranged very much.
Claims (7)
1, a kind of punishing electricity-stolen single-phase electric energy meter is characterized in that on the basis of common single-phase electric energy meter, is equipped with two groups and picks up the stealing signal circuit, and the identification amplifying circuit, delay circuit is penalized electricity and indicating circuit and is penalized electrical actuators, power supply and holding circuit.
2, electric energy meter according to claim 1 is characterized in that two groups of first group of circuit that picks up the stealing signal circuit are by differential mutual inductor B
2, building-out capacitor C
1, switching diode VD
1, commutation diode VD
2, protection diode VD
3Form, second group of circuit is by current phase mutual inductor B
3, switching diode VD
4, commutation diode VD
5Form.
3, electric energy meter according to claim 1, it is characterized in that discerning amplifying circuit is by transistor VT
1, pull-up resistor R
1, filter capacitor C
3Form.
4, electric energy meter according to claim 1 is characterized in that delay circuit is by the time resistance R
2, the time capacitor C
4Form.
5, electric energy meter according to claim 1, it is characterized in that penalizing electricity and indicating circuit and penalizing electrical actuators is by current-limiting resistance R
3, semiconductor complex pipe VT
2-3, shunt resistance R
4, LED, have clutch coupling dc small motor M and form.
6, electric energy meter according to claim 1 is characterized in that power supply and holding circuit are by rectifier bridge VD
6-VD
9, filter capacitor C
5Ptc material thermistor R
T, power coil B
1-B, continued access capacitor C
6Form.
7, two groups according to claim 2 are picked up the stealing signal circuit, it is characterized in that differential mutual inductor B
2Primary coil be B
2-L
1With B
2-L
2, secondary coil is B
2-L
3Current phase mutual inductor B
3Primary coil be B
3-L
1, secondary coil is B
3-L
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96208773 CN2247816Y (en) | 1996-04-20 | 1996-04-20 | Single phase electric energy meter capable of avoiding fraudulent use of power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96208773 CN2247816Y (en) | 1996-04-20 | 1996-04-20 | Single phase electric energy meter capable of avoiding fraudulent use of power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2247816Y true CN2247816Y (en) | 1997-02-19 |
Family
ID=33892647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96208773 Expired - Fee Related CN2247816Y (en) | 1996-04-20 | 1996-04-20 | Single phase electric energy meter capable of avoiding fraudulent use of power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2247816Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942129A (en) * | 2017-10-11 | 2018-04-20 | 杭州海兴电力科技股份有限公司 | Creepage detection method |
-
1996
- 1996-04-20 CN CN 96208773 patent/CN2247816Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942129A (en) * | 2017-10-11 | 2018-04-20 | 杭州海兴电力科技股份有限公司 | Creepage detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |