CN201247270Y - Device for preventing electricity fraudulent use - Google Patents
Device for preventing electricity fraudulent use Download PDFInfo
- Publication number
- CN201247270Y CN201247270Y CNU2008201416387U CN200820141638U CN201247270Y CN 201247270 Y CN201247270 Y CN 201247270Y CN U2008201416387 U CNU2008201416387 U CN U2008201416387U CN 200820141638 U CN200820141638 U CN 200820141638U CN 201247270 Y CN201247270 Y CN 201247270Y
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- CN
- China
- Prior art keywords
- circuit
- relay
- electricity
- mutual inductor
- sequence 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 - Lifetime
Links
- 230000005611 electricity Effects 0.000 title description 14
- 230000003321 amplification Effects 0.000 claims description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000011664 signaling Effects 0.000 claims description 12
- 238000012806 monitoring device Methods 0.000 abstract 2
- 230000002265 prevention Effects 0.000 abstract 2
- 238000004804 winding Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
The utility model relates to an electricity-filching prevention monitoring device in the field of instruments. The mainly technical chrematistics are that the device is formed by a zero sequence current mutual inductor, a signal amplifying circuit, a trigger circuit, a signal switching circuit and a relay, wherein the input end of an alternating current circuit is connected with the input end of the zero sequence current mutual inductor, the output end of the zero-sequence current mutual inductor is connected with the signal amplifying circuit, the output end of the signal amplifying circuit is connected with the trigger circuit, the output end of the trigger circuit is connected with the signal switching circuit, the signal switching circuit is connected with the normally-open contact of the relay, and two normally-closed contacts of the relay are respectively connected in series on a live wire and a ground wire. The utility model is an electricity-filching prevention monitoring device, which has reasonable and scientific design, simple and fine circuit structure, small appearance, low cost, strong practicability, simple operation, safety and reliability, and is convenient for installing and using in fields.
Description
Technical field
The utility model belongs to instrument field, especially a kind of anti-electricity-theft device.
Background technology
In recent years, we find that in the electricity consumption census operations some electricity consumer adopts the mode stealing of ground wire.They make live wire without voltage component and current element, and at ground wire of load one side joint, make live wire and ground wire form the loop after the live wire of electric energy meter and zero line are exchanged.Like this, the potential winding two ends of electric energy meter do not have voltage, do not have electric current to flow through in the current coil, and current element and voltage component can't produce the work magnetic flux, cause electric energy meter normally not measure, thereby realize the purpose of stealing.
This electricity filching behavior causes following problem easily: 1. when carrying out the stealing operation, the electric shock phenomenon takes place easily, even cause electricity filching person death; 2. cause the electric quantity loss of power department, increased line loss; 3. after taking electricity filching behavior,, therefore cause the economic loss of power department because electric energy meter can not normally measure; 4. in order to prevent the generation of electricity filching behavior, therefore the staff of the power department inspection of need often registering one's residence has increased staff's workload.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of anti-electricity-theft device that prevents stealing electricity phenomenon generation, the line loss that reduces power department and economic loss, reduction staff workload is provided.
The utility model solves its technical matters and is achieved through the following technical solutions:
A kind of anti-electricity-theft device, it is characterized in that: constitute by zero sequence current mutual inductor, signal amplification circuit, trigger circuit, signaling conversion circuit and relay, the input end of alternating circuit is connected with the input end of zero sequence current mutual inductor, the output terminal of zero sequence current mutual inductor connects signal amplification circuit, the output terminal of signal amplification circuit connects trigger circuit, the output terminal of trigger circuit connects signaling conversion circuit, signaling conversion circuit is connected with the normally opened contact of relay, and two normally closed contacts of this relay are connected on respectively on live wire and the ground wire.
And, be connected a delay circuit between described signal amplification circuit and the trigger circuit.
And described relay is an electromagnetic relay.
And described signaling conversion circuit is a bridge rectifier circuit.
And described signal amplification circuit is the triode current amplification circuit.
Advantage of the present utility model and beneficial effect are:
1. this anti-electricity-theft device can prevent effectively that the stealing accident from taking place, and has avoided taking owing to the resident problem of the human casualty accident that electricity filching behavior causes.
2. this anti-electricity-theft device is characteristics and special making of utilizing the ground wire stealing at the stealing user, can reduce electric quantity loss after the use, reduces line loss, makes the low district's line loss of presenting a theatrical performance as the last item on a programme reduce to zone of reasonableness.
3. this anti-electricity-theft device uses the back stealing electricity phenomenon obviously to reduce, and therefore can increase the electric weight and the electricity charge and reclaim, for enterprise retrieves unnecessary economic loss.
4. this anti-electricity-theft device can be avoided conflicting of power utility check personnel and resident, reaches protection staff's purpose, has reduced the workload of investigating and prosecuting the stealing personnel simultaneously, has greatly improved work efficiency.
The utility model be a kind of design science rationally, circuit structure simplifies, profile is small and exquisite, cost is low, practical, simple to operate, safe and reliable and the anti-electricity-theft device that installs and uses at the scene of being convenient to, use this anti-electricity-theft device can stop stealing electricity phenomenon generation, the line loss that reduces power department and economic loss, reduction staff workload, finally create the power utilization environment that supplies of a harmony, safety.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the synoptic diagram of installing and using of the present utility model;
Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of anti-electricity-theft device, by zero sequence current mutual inductor, signal amplification circuit, trigger circuit, delay circuit, signaling conversion circuit and relay constitute, the input end of alternating circuit is connected with the input end of zero sequence current mutual inductor, the live wire of alternating circuit and zero line pass zero sequence current mutual inductor simultaneously, the output terminal of zero sequence current mutual inductor connects signal amplification circuit, this signal amplification circuit is the triode current amplification circuit, this triode is a NPN type 9014, the output terminal of signal amplification circuit connects trigger circuit, the output terminal of trigger circuit connects signaling conversion circuit, this signaling conversion circuit is a bridge rectifier circuit, signaling conversion circuit is connected with the normally opened contact of relay, and two normally closed contacts of this relay are connected on respectively on live wire and the ground wire.Relay in the present embodiment is an electromagnetic relay.
During the normal electricity consumption of user, triode T1 is saturated, not conducting of controllable silicon V, and relay is not worked and is in normally off, realizes normal power supply.The controllable silicon model is MCR100-6.
When the user adopts the stealing of ground wire mode, triode T2 conducting, triode T1 ends, controllable silicon V conducting, relay work, normally closed contact is opened, user's outage.
After correcting wiring, delay circuit work, capacitor C 1 discharge conducting, relay works on, and after 1 minute, capacitor C 1 discharge finishes, and relay quits work, and circuit will recover normal power supply automatically.
The groundwork principle of anti-electricity-theft device is:
Live wire and zero line are passed zero sequence current mutual inductor simultaneously as a winding, and the induced voltage sampling by to Secondary Winding is converted to direct current signal with AC signal by rectification circuit, amplifies the rear drive actuating of relay through oversampling circuit again.
When the normal electricity consumption of user, the size of current that flows through zero sequence current mutual inductor zero line and live wire equates, direction is opposite, vector and be zero, and the Secondary Winding of zero sequence current mutual inductor can not produce induced voltage, and circuit is not worked, and relay is failure to actuate, normal power supply.When the user adopts the ground wire stealing, flow through the current phasor of zero sequence current mutual inductor and non-vanishing, the Secondary Winding of zero sequence current mutual inductor will produce induced voltage, makes the actuating of relay, user's outage this moment.When timely correction wiring, after 1 minute, circuit will recover normal power supply automatically.If do not correct wiring, the Secondary Winding of current transformer will constantly produce induced voltage, make relay repetitive operation, and circuit can not recover normal power supply.
Claims (5)
1. anti-electricity-theft device, it is characterized in that: constitute by zero sequence current mutual inductor, signal amplification circuit, trigger circuit, signaling conversion circuit and relay, the input end of alternating circuit is connected with the input end of zero sequence current mutual inductor, the output terminal of zero sequence current mutual inductor connects signal amplification circuit, the output terminal of signal amplification circuit connects trigger circuit, the output terminal of trigger circuit connects signaling conversion circuit, signaling conversion circuit is connected with the normally opened contact of relay, and two normally closed contacts of this relay are connected on respectively on live wire and the ground wire.
2. anti-electricity-theft device according to claim 1 is characterized in that: be connected a delay circuit between described signal amplification circuit and the trigger circuit.
3. anti-electricity-theft device according to claim 1 is characterized in that: described relay is an electromagnetic relay.
4. anti-electricity-theft device according to claim 1 is characterized in that: described signaling conversion circuit is a bridge rectifier circuit.
5. anti-electricity-theft device according to claim 1 is characterized in that: described signal amplification circuit is the triode current amplification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201416387U CN201247270Y (en) | 2008-08-18 | 2008-08-18 | Device for preventing electricity fraudulent use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201416387U CN201247270Y (en) | 2008-08-18 | 2008-08-18 | Device for preventing electricity fraudulent use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247270Y true CN201247270Y (en) | 2009-05-27 |
Family
ID=40731090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201416387U Expired - Lifetime CN201247270Y (en) | 2008-08-18 | 2008-08-18 | Device for preventing electricity fraudulent use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201247270Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203924A (en) * | 2015-10-10 | 2015-12-30 | 上海博英信息科技有限公司 | Electricity usage trend abnormity suspicion analysis method and anti-electric-larceny monitoring system |
-
2008
- 2008-08-18 CN CNU2008201416387U patent/CN201247270Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203924A (en) * | 2015-10-10 | 2015-12-30 | 上海博英信息科技有限公司 | Electricity usage trend abnormity suspicion analysis method and anti-electric-larceny monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN ELECTRIC POWER CORP. Effective date: 20130521 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: TIANJIN ELECTRIC POWER CORP. Effective date: 20130521 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300010 HEBEI, TIANJIN TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130521 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Tianjin Electric Power Corp. Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Patentee before: Tianjin Electric Power Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090527 |
|
| CX01 | Expiry of patent term |