CN201078757Y - Electric leakage and electric larceny recognition indicating circuit for single phase AC power supply circuitry - Google Patents
Electric leakage and electric larceny recognition indicating circuit for single phase AC power supply circuitry Download PDFInfo
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- CN201078757Y CN201078757Y CNU2007201290204U CN200720129020U CN201078757Y CN 201078757 Y CN201078757 Y CN 201078757Y CN U2007201290204 U CNU2007201290204 U CN U2007201290204U CN 200720129020 U CN200720129020 U CN 200720129020U CN 201078757 Y CN201078757 Y CN 201078757Y
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Abstract
An indicating circuit for recognizing electric leakage and electricity stealing in single phase AC supply line is provided, which is realized by utilizing mutual-phase time relation of self phase and induction phase of the AC supply line through photoelectric coupling, and comprises a zero sequence transformer, a resistance, a capacitance, a crystal diode, a photoelectric coupler and an AC supply line connected mutually, so as to form a recognizing circuit and be set by a calculation amplifying circuit for amplifying and displaying. The amplifying display is used for directly reflecting the working status of the AC supply line.
Description
Affiliated technical field
The utility model relates to the device of a kind of supply line electricity consumption work indicating status, especially can detect the electric leakage and the stealing of single-phase ac power supply circuit.
Background technology
The electronics metering electric energy meter has replaced responding to metering electric energy meter at present, subsidiary function is also progressively perfect, but (network inquiry) its core component be external all, autonomous innovation becomes problem, for cooperation or in conjunction with the electric energy metrical facility, the utility model is from the electric leakage of creating a kind of simple practicality, stealing identification indicating circuit.
The content of invention
Content of the present utility model is to adopt phase place to take a sample respectively to combine with photoelectric coupling technology to make, when its means are the AC power line current imbalance, gang up in the zero-sequence transformer of power circuit and will produce induction current, induced voltage, and frequency is identical, but phase place is not quite similar, this direction of current that depends on AC power line is relevant with zero-sequence transformer coil winding direction, facts have proved: gang up in the zero-sequence transformer of power circuit in the power circuit electric leakage or in the same time of stealing, the phase place that zero-sequence transformer is responded to is opposite, therefore, the phase decision that the same time of zero-sequence transformer is responded to the electric leakage and the stealing of single-phase ac power supply circuit, alternating current is that period frequency changes, and the Locked Confirmation phase place solves by electronic technology.
The technical scheme that its technical matters that solves the utility model adopts is:
At my number of patent application: improved plan in addition on the 200620126177.7 know-why bases.
1, the utility model main technical schemes: zero-sequence transformer is ganged up in AC power line, electric leakage or stealing appear as power circuit, zero-sequence transformer will produce induction electromotive force, frequency is identical with power line frequency, AC signal one end with induction electromotive force, be connected by the inner phototriode of two opposite polarity crystal diodes and pairing photoelectrical coupler, just form two groups, the negative different half-wave loop signal of different time, and loop signal is controlled by the photoelectrical coupler interior light emitting diodes, these two light emitting diodes just are being controlled by AC power line, the conducting of negative half-cycle signal and ending, thus, conducting in the same time will become in two groups of loop signals wherein one group of unique selection, one group of unique selection as power circuit electric leakage or stealing the two one of determine, cause this, electric leakage signal, the stealing signal is discerned generation thus, and the mutual bit time relation of both having utilized power circuit self phase place and induced phase is by photoelectricity coupling identification automatically.Utilize phase identification feasible, but being subjected to power circuit electricity consumption facility in practice uses character to influence to some extent, when online electric leakage of resistive consumer or stealing, phase place that zero-sequence transformer is responded to and power line frequency phase-locking, and capacitive, perception consumer and power line frequency are synchronous, but phase place truly has skew and signal aspect difference phenomenon, this is the intrinsic phenomenon that consumer uses character, under the medium and small current status of small-sized mutual inductor, show more outstanding, this gives the Power arithmetic of online electric leakage of electricity consumption facility or stealing, setting and identification bring obvious errors, for solution overcomes this intrinsic drawback, the utility model adopts two resistance, a polarity free capacitor is to capacitive, induced signal perceptual and resistive consumer carries out the balance correction, with the energy storage in addition of half-wave induced signal filtering becoming direct current signal, with form of energy backward polar circuit carry identification signal, make capacitive, perceptual and resistive three's electricity consumption facility compatibility, remedied the self-defect of small-sized mutual inductor, will discern current error and be controlled in the minimum zone.Example: when online electric leakage of the utility model resistive consumer or stealing electric current (30mA setting value), the no matter load of its perceptual consumer, zero load are all moved at (28mA-32mA) left and right sides electronic circuit, practice draws the definite effect after the improvement, cause this, overall recognition technology scheme forms, produce positive and negative two kinds of opposite direct current signals at the polarity free capacitor two ends, to distinguish electric leakage and stealing.See Figure of description: Fig. 1.
2, display circuit scheme
The utility model adopts direction of current identification indicating circuit, the positive and negative direct current signal of preceding utmost point identification circuit is sent to amplifying circuit to be amplified, high-low level after will amplifying again carries out interval adjustable setting (power circuit electric leakage, stealing current setting value), amplify demonstration electric leakage and stealing after the setting again, have operational amplification circuit to finish.See Figure of description: Fig. 2.
3, auxiliary display circuit scheme
Be the simulated power size indication after identification display circuit electric leakage or stealing show, the shunting amplitude limit of hold concurrently simultaneously single line stealing indication and electronic circuit, this circuit have zero-sequence transformer to cooperate with light emitting diode to finish, accomplish dual utilization.See (1) (4) (5) (6) (7) among accompanying drawing Fig. 1
4, adjunct circuit
Gather the isolation pulse signal that the stealing signal is provided with for cooperating long-range electricity consumption metering acquisition system, this signal is the square-wave pulse signal that is synchronized with this power line frequency, is convenient to the differentiation of this power circuit electricity consumption metrical pulse signal and the identification of this power circuit place phase sequence.This circuit mainly contains transistor and the photoelectrical coupler combination is finished.See (47) (46) among Figure of description Fig. 2.
The foregoing circuit scheme combination is constituted this utility model complete circuit, see Figure of description Fig. 3.Electronic component reference and performance are with reference to seeing embodiment, this utility model is made under amateurish condition, and except that Figure of description Fig. 1 for this reason the utility model main technical principle figure, other circuit is the auxiliary circuit of implementing, used electronic devices and components are only for referencial use, focus on principle.
Beneficial effect
The beneficial effects of the utility model are: can intuitively reflect power supply lines duty (be similar to the traffic police. the pilot lamp effect), be convenient to power and the dual interests of electricity consumption, electronic circuit is simple and reliable, can use conventional electrical components and parts, inexpensive in conjunction with also cooperating for the electricity consumption metering facility.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model main technical schemes identification circuit schematic diagram.
Fig. 2 is the utility model display circuit schematic diagram.
Fig. 3 is the utility model identification indicating circuit complete circuit.
Fig. 4 is that the utility model is implemented utilization effect synoptic diagram in conjunction with metering.
Among Fig. 1,1. zero-sequence transformer, 2. shunt resistance, 3. shaping capacitance, 4.5.6.7. light emitting diode, 8.9.10.11. current-limiting resistance, 12.13. crystal diode, 14.15. photoelectrical coupler, the 16.17. current limliting is divided the piezoelectricity group, 18. polarity free capacitors, 19. electric energy metrical facility sample resistance (being used), 20.21. ac power input end, 22.23. AC power output rating, 24.25. identification signal output terminal.
Among Fig. 2,26.27. crystal diode, 28. current-limiting resistances, 29.30. divider resistance, 31. signal gains are amplified resistance, 32.36.37. operational amplifier, 33.35. divider resistance, 34. interval voltages are set adjustable resistance, 38.40.43. light emitting diode, 39.41.44. current-limiting resistance, 45. filter capacitors, 42. biasing resistors, 46. transistor, 47. photoelectrical coupler, 48. current-limiting resistances, 49. commutation diodes.(50). (51) isolate stealing signal output part, (52). (53) dc supply input.
Fig. 3, Fig. 3 are the combinational circuits by Fig. 1 electronic identification circuit and Fig. 2 electronics display circuit.
Embodiment
In Fig. 1, zero-sequence transformer (1) is ganged up in AC power line (20). and (21). (22). (23). in, zero-sequence transformer (1), an end and resistance (2). (8). electric capacity (3). an end, light emitting diode (4).(6). positive pole, (5). (7). negative electricity connects, zero-sequence transformer (1) other end and resistance (2), electric capacity (3) other end, resistance (9). (10). polarity free capacitor (18) one ends are electrically connected, resistance (9) other end and light emitting diode (4) negative pole, (5) positive electrical connects, resistance (10) other end and light emitting diode (6) negative pole, (7) positive electrical connects, resistance (8) other end and crystal diode (12) positive pole, (13) negative electricity connects, crystal diode (12) negative pole is electrically connected with the inner photosensitive transistor emitter of photoelectrical coupler (14), crystal diode (13) is anodal to be closed the inner photosensitive transistor collector of device (15) and is electrically connected with photoelectricity is cultivated, resistance (16) one ends are electrically connected with the inner photosensitive transistor emitter of photoelectrical coupler (15), resistance (17) one ends are electrically connected with the inner photosensitive transistor collector of photoelectrical coupler (14), resistance (16). (17) other end is electrically connected with polarity free capacitor (18) other end, photoelectrical coupler (14). (15). the interior light emitting diodes negative pole is electrically connected with resistance (11) one ends, resistance (11) other end is electrically connected with AC power line (21) end, photoelectrical coupler (14). (15) interior light emitting diodes is anodal to be electrically connected with AC power line (20) end, electric leakage or stealing appear as AC power line, in polarity free capacitor (24). is just exporting at (25) two ends, two kinds of direct-flow signal voltages that negative is anti-are in order to distinguish electric leakage and stealing.
In Fig. 2, crystal diode (26) negative pole, (27) positive pole is electrically connected with resistance (28) one ends, resistance (28) other end and the opposite input end of operational amplifier (32), resistance (31) one ends are electrically connected, crystal diode (26) positive pole, (27) negative pole and resistance (29). (30) one ends, the identical input end of operational amplifier (32) is electrically connected, resistance (31) other end and operational amplifier (32) output terminal, (36) opposite input end, (37) identical input end is electrically connected, resistance (33) one ends and adjustable resistance (34) one ends, the identical input end of operational amplifier (36) is electrically connected, resistance (35) one ends and adjustable resistance (34) other end, the opposite input end of operational amplifier (37) is electrically connected, operational amplifier (36) output terminal is electrically connected with resistance (39) one ends, operational amplifier (37) output terminal and resistance (41). (42) one ends are electrically connected, resistance (39) other end is connected with light emitting diode (38) negative electricity, resistance (41) other end is connected with light emitting diode (40) negative electricity, resistance (44) one ends are connected with light emitting diode (43) negative electricity, resistance (42) other end is electrically connected with transistor (46) base stage, transistor (46) emitter is connected with photoelectrical coupler (47) interior light emitting diodes negative electricity, transistor (46) collector is electrically connected with resistance (48) one ends, resistance (48) other end is connected with crystal diode (49) positive electrical, crystal diode (49) negative pole is electrically connected with AC power line (21) end, anodal and electric capacity (45) positive pole of direct current 5V power input (52), operational amplifier (32). (36). (37) working power electrode input end, resistance (44). (35). (30) other end is electrically connected, direct current 5V power input (53) negative pole and electric capacity (45) negative pole, light emitting diode (38). (40). (43) positive pole, operational amplifier (32). (36). (37) working power negative input, photoelectrical coupler (47) interior light emitting diodes positive pole, resistance (33). (29) other end is electrically connected, among the figure, stealing indication light emitting diode (40), electric leakage indication light emitting diode (38), stealing isolation signals output terminal (50). (51).
Fig. 3, Fig. 3 are the combinational circuits by Fig. 1 electronic identification circuit and Fig. 2 electronics display circuit.
With (20) among Fig. 1. (21). (24). (20) among (25) and Fig. 2. (21). and (24). (25) corresponding electrical connection constitutes the utility model identification indicating circuit complete circuit.
Electronic devices and components reference and performance reference data.
Among Fig. 3, zero-sequence transformer: (1) gets small-sized earth leakage protective device electric current mutual inductor, or coiling voluntarily.This circuit is got (positive safe DZ47LE-32 type earth leakage protective device Inside coil).
Light emitting diode: (4). (5). (6). (7) get the low forward voltage luminotron of super brightness, and (4). (5) and (6), (6) with (7) forward voltage difference 0.1V-0.2V, be convenient to the observation of online electric leakage, electricity-stealing simulating watt level and the indication of single line stealing watt level, (38). (40). (43) no requirement (NR), determine function with the luminotron color.
Photoelectrical coupler: (14). (15). (47) get CP817 or similar.
Crystal diode: (12). (13) get germanium section bar material 1N60, (26). (27). (29) get silicon section bar material 1N007.
Integrated circuit: (32). (36). (37) get the LM324 operational amplifier.
Transistor: (46) get high back-pressure low-power transistor.
Resistance: (2). (31) .25K Ω, (9). (10) 50 Ω, (8) 10K, (16). (17). (42) .3K Ω, (11). (48) 76K Ω, (28). (39). (41). (44) 300 Ω, (34) 0-5K Ω (30). (29). and (35). (33) 12K Ω, (19) electric energy metrical facility sample resistance (being used).
Electric capacity: (3) 0.02uf, (45) 100uf, (18) polarity free capacitor get two 330uf electrochemical capacitor series connection and use.
Performance: the utility model ac power supply line, no matter leak electricity or stealing, during electric current 〉=30mA (setting value is adjustable), electric leakage has light emitting diode (38) to show, and stealing has light emitting diode (40) to show.During electric current 〉=200mA, light emitting diode (4) is arranged. (5). (6). (7), according to size of current, carry out progressively that watt level is auxiliary to be shown, the single line stealing indication of holding concurrently (phase line operation of ac power supply line).
Implement the utilization synoptic diagram in conjunction with electric energy metrical facility (electric energy meter)
Among Fig. 4, ac power supply line input end (20). (21), ac power supply line output terminal (22). (23), circuit normal power supply pilot lamp (43), conventional electricity consumption flashing indicator light (54), electric leakage pilot lamp (38), stealing pilot lamp (40), electric leakage, the auxiliary indication of the stealing watt level single line stealing pilot lamp (4) of holding concurrently. (5). (6). (7), the collection of the electricity consumption metrical pulse Signal Spacing stealing pulse signal of holding concurrently is isolated and is gathered output terminal (50). (51).
Claims (1)
1. single-phase ac power supply line electrical leakage, stealing identification indicating circuit, it is to utilize the mutual bit time relation of power circuit self phase place and induced phase to be coupled by photoelectricity to realize, it is characterized in that: gang up zero-sequence transformer (1) one end and resistance (2) in AC power line. (8). electric capacity (3). an end, light emitting diode (4). (6). positive pole, (5). (7). negative electricity connects, zero-sequence transformer (1) other end and resistance (2), electric capacity (3) other end, resistance (9). (10). polarity free capacitor (18) one ends are electrically connected, resistance (9) other end and light emitting diode (4) negative pole, (5) positive electrical connects, resistance (10) other end and light emitting diode (6) negative pole, (7) positive electrical connects, resistance (8) other end and crystal diode (12) positive pole, (13) negative electricity connects, crystal diode (12) negative pole is electrically connected with the inner photosensitive transistor emitter of photoelectrical coupler (14), crystal diode (13) is anodal to be closed the inner photosensitive transistor collector of device (15) and is electrically connected with photoelectricity is cultivated, resistance (16) one ends are electrically connected with the inner photosensitive transistor emitter of photoelectrical coupler (15), resistance (17) one ends are electrically connected with the inner photosensitive transistor collector of photoelectrical coupler (14), resistance (16). (17) other end is electrically connected with polarity free capacitor (18) other end, photoelectrical coupler (14). (15). the interior light emitting diodes negative pole is electrically connected with resistance (11) one ends, resistance (11) other end is electrically connected photoelectrical coupler (14) with AC power line (21) end. and (15) interior light emitting diodes is anodal to be electrically connected with AC power line (20) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201290204U CN201078757Y (en) | 2006-10-23 | 2007-08-17 | Electric leakage and electric larceny recognition indicating circuit for single phase AC power supply circuitry |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620126177 | 2006-10-23 | ||
| CN200620126177.7 | 2006-10-23 | ||
| CNU2007201290204U CN201078757Y (en) | 2006-10-23 | 2007-08-17 | Electric leakage and electric larceny recognition indicating circuit for single phase AC power supply circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078757Y true CN201078757Y (en) | 2008-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201290204U Expired - Fee Related CN201078757Y (en) | 2006-10-23 | 2007-08-17 | Electric leakage and electric larceny recognition indicating circuit for single phase AC power supply circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078757Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608373A (en) * | 2012-04-13 | 2012-07-25 | 钜泉光电科技(上海)股份有限公司 | Electric larceny detecting method and system, and electricity meter |
| CN102882183A (en) * | 2012-10-19 | 2013-01-16 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN102931631A (en) * | 2012-11-15 | 2013-02-13 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
| CN103151833A (en) * | 2013-02-01 | 2013-06-12 | 马新国 | Electricity larceny prevention method and device |
| CN103293427A (en) * | 2012-02-27 | 2013-09-11 | 海洋王（东莞）照明科技有限公司 | Electric leakage indicating circuit of electric appliances and electric unit with metal outer shell |
| CN106383312A (en) * | 2016-12-01 | 2017-02-08 | 北京简佑科技有限公司 | Motor state detection circuit and motor state display device |
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2007
- 2007-08-17 CN CNU2007201290204U patent/CN201078757Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293427A (en) * | 2012-02-27 | 2013-09-11 | 海洋王（东莞）照明科技有限公司 | Electric leakage indicating circuit of electric appliances and electric unit with metal outer shell |
| CN102608373A (en) * | 2012-04-13 | 2012-07-25 | 钜泉光电科技(上海)股份有限公司 | Electric larceny detecting method and system, and electricity meter |
| CN102882183A (en) * | 2012-10-19 | 2013-01-16 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN102882183B (en) * | 2012-10-19 | 2014-03-26 | 深圳市晶福源电子技术有限公司 | Output leakage protection device |
| CN102931631A (en) * | 2012-11-15 | 2013-02-13 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
| CN102931631B (en) * | 2012-11-15 | 2014-03-26 | 深圳市晶福源电子技术有限公司 | Output earth leakage protection device for high-voltage and direct-current power supply system |
| CN103151833A (en) * | 2013-02-01 | 2013-06-12 | 马新国 | Electricity larceny prevention method and device |
| CN103151833B (en) * | 2013-02-01 | 2015-09-02 | 马新国 | A kind of electricity anti-theft method and anti-electricity-theft device |
| CN106383312A (en) * | 2016-12-01 | 2017-02-08 | 北京简佑科技有限公司 | Motor state detection circuit and motor state display device |
| CN106383312B (en) * | 2016-12-01 | 2023-06-27 | 北京简佑科技有限公司 | Motor state detection circuit and motor state display device |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20080625 Termination date: 20110817 |