CN102290859A - Low-voltage zero line over-current and breakage remote alarm of distribution transformer - Google Patents
Low-voltage zero line over-current and breakage remote alarm of distribution transformer Download PDFInfo
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- CN102290859A CN102290859A CN2010102106055A CN201010210605A CN102290859A CN 102290859 A CN102290859 A CN 102290859A CN 2010102106055 A CN2010102106055 A CN 2010102106055A CN 201010210605 A CN201010210605 A CN 201010210605A CN 102290859 A CN102290859 A CN 102290859A
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- distribution transformer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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Abstract
The invention provides a low-voltage zero line over-current and breakage remote alarm of a distribution transformer. The alarm comprises a signal acquisition circuit, a signal judging circuit, a switch tripping circuit and an alarm circuit, wherein the signal acquisition circuit is connected to the signal judging circuit; the signal judging circuit is connected with the switch tripping circuit and the alarm circuit; when a zero line is broken, a protector acts to trip, meanwhile, remote alarm is sent out; when the zero line has over-current, remote alarm is sent out; on-line monitoring alarm of an accident is realized, the accident is timely reported to a person on duty, and overhauling personnel rush to the scene and timely do rush repairs, so that the accident handling time is shortened, the labor intensity of personnel is reduced, the power supply is improved, and the enterprise and social benefit is improved; meanwhile, the alarm has a positive promotion effect on a distribution system intelligent technology; and the alarm has the advantages of scientific and rational design, low cost, simple structure, skilful conception and easiness and convenience in use.
Description
Technical field
The present invention relates to a kind of 10kV of being used in distribution transformer low pressure zero line overcurrent, breaking protection and distant place alarm technique, specifically, is to report to the police in a kind of low voltage electric network zero line overcurrent, breaking protection and the distant place of being used for.
Background technology
At present, the distribution transformer low-voltage circuit of current operation is owing to can not monitor in real time, but in actual motion, low pressure zero line overcurrent, disconnection fault take place, carry out overhaul of the equipments by the user notification maintainer, troubleshooting time of dragging is long like this, the user is had a power failure influence greatly, therefore power supply reliability is low, device damage rate height, can not satisfy the requirement that living standards of the people improve constantly, if can popularize in an all-round way and use distribution transformer generation zero line in service overcurrent, disconnection fault distant place alarm technique, realize online monitoring intelligent warning.When distribution transformer generation zero line in service overcurrent, disconnection fault, notify accident at once operator on duty, the maintainer in time rushes to repair to the scene very first time, reducing household electrical appliance damages, shorten the accident treatment time, reduce worker's labour intensity, improve amount of power supply, increase enterprise and social benefit.Active promoting function is also played in development to the distribution system intellectualized technology simultaneously.
In order to overcome the above problems, people are seeking a kind of desirable technical solution always.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, thereby provide a kind of design science, cost is low, power supply reliability is high, can overcome existing defective again.
To achieve these goals, the invention provides a kind of distribution transformer low pressure zero line overcurrent, broken string distant place alarm, comprise signal acquisition circuit, signal judging circuit, switch trip circuit, warning circuit; Described signal acquisition circuit connects signal judging circuit, and signal judging circuit connects switch trip circuit, warning circuit; When distribution transformer low pressure zero line generation overcurrent, broken string, carry out a distant place and report to the police the protector would trip.
Described signal acquisition circuit comprises a circular iron core, a winding, and described winding is enclosed within on the circular iron core; Scurry into the zero line that distribution transformer secondary low-voltage winding is drawn in the circular iron core of described signal acquisition circuit; Two terminations of described signal acquisition circuit winding connect signal judging circuit respectively.
Described signal judging circuit comprises an A/D analog-digital converter circuit, calculates decision circuitry, executive component; Described A/D analog-digital converter circuit connects the calculating decision circuitry, calculates decision circuitry and connects executive component, and executive component connects described warning circuit, switch trip circuit respectively.
Described switch trip circuit comprises a breaking coil, the executive component normally opened contact K of described signal judging circuit; Executive component normally opened contact K one end of described signal judging circuit connects power supply L, and the normally opened contact K other end connects described switch trip circuit coil one end, and the switch trip circuit coil other end connects power supply N.
Described warning circuit comprises the optical transmission circuit of fiber optic cables, optical transceiver circuit; Optical transmission circuit changes the signal of telecommunication of distribution transformer low pressure zero line overcurrent, broken string distant place alarm into light signal and is transmitted to distribution supply intelligent control centre by fiber optic cables.
Described warning circuit comprises two alarm signal input circuits of radio alarming circuit, a signal encoding circuit, a signal transmission circuit; Described two alarm signal input circuits are respectively 1K, 2K, and described alarm signal coding circuit also comprises an A end, a B end, a C end, and described signal transmission circuit has a D end, a F end, a G end, a N end; Described alarm signal input circuit 1K input phase line ground signalling, 2K imports trip signal, described radio alarming coding circuit A termination power positive pole, B termination power negative pole, the described signal transmission circuit D end of C termination, described signal transmission circuit G termination power positive pole, N termination power negative pole, F termination transmitting antenna.
The relative prior art of the present invention has outstanding substantive distinguishing features and obvious improvement, and specifically, this device has the following advantages:
1, when low-voltage power line low pressure zero line overcurrent, broken string, can automatic trip and a distant place report to the police, notify accident at once operator on duty, the maintainer in time rushes to repair to the scene very first time, reduce household electrical appliance and damage, shorten the accident treatment time, reduce worker's labour intensity, improve amount of power supply, increase enterprise and social benefit.Active promoting function is also played in development to the distribution system intellectualized technology simultaneously.
2, this apparatus structure is simple, is skillfully constructed, and design science is reasonable, uses simple and convenient.
Description of drawings
Fig. 1 is distribution transformer low pressure zero line overcurrent of the present invention, broken string distant place alarm structured flowchart;
Fig. 2 is a signal acquisition circuit composition diagram of the present invention;
Fig. 3 is a signal judging circuit block diagram of the present invention;
Fig. 4 is this described invention switch trip circuit diagram;
Fig. 5 A is this described invention optical fibre communication cable warning circuit block diagram;
Fig. 5 B is this described invention radio communication warning circuit block diagram.
Embodiment
For making technical scheme of the present invention clearer, the specific embodiment of the present invention is done detailed explanation below in conjunction with accompanying drawing.
As shown in Figure 1, be distribution transformer low pressure zero line overcurrent of the present invention, broken string distant place alarm structured flowchart; Comprise signal acquisition circuit 1, signal judging circuit 2, switch trip circuit 3, warning circuit 4; Described signal acquisition circuit connects signal judging circuit, and signal judging circuit connects switch trip circuit, warning circuit respectively.
When distribution transformer low pressure zero line generation overcurrent, the broken string protected, signal judging circuit starts tripping operation, warning circuit, reports to the police and has a power failure.Maintainer's very first time can in time rush to repair to the scene, shortens the accident treatment time, reduces worker's labour intensity, improves amount of power supply, increases enterprise and social benefit.
Fig. 2 is a signal acquisition circuit structure composition diagram of the present invention, and described signal acquisition circuit comprises a circular iron core, a winding, and described winding is enclosed within on the circular iron core; Scurry into distribution transformer secondary low-voltage winding zero line N in the circular iron core of described signal acquisition circuit; It is X, Y that described signal acquisition circuit winding has two terminations, connects signal judging circuit respectively.
When the distribution transformer low pressure generation zero line overcurrent of being protected, broken string, after the signal acquisition circuit winding detects, with signal input-signal judging circuit.
Fig. 3 is a described signal judging circuit block diagram of the present invention, and described signal judging circuit comprises an A/D analog-digital converter circuit 31, calculates decision circuitry (single-chip microcomputer) 32, executive component 33; Described A/D analog-digital converter circuit 31 connects calculating decision circuitry 32, calculates decision circuitry 32 and connects executive components 33, and executive component connects described warning circuit, trip circuit respectively.
When distribution transformer low pressure generation zero line overcurrent, the broken string protected; after signal acquisition circuit detects; detected signal is inputed to the A/D analog-digital converter circuit, calculate and input to executive component after decision circuitry is calculated judgement, executive component is reported to the police, is tripped.
Fig. 4 is a switch trip circuit diagram of the present invention, and described switch trip circuit comprises a breaking coil KM, the executive component normally opened contact K of described signal judging circuit; Executive component normally opened contact K one end of described signal judging circuit connects power supply L, and the normally opened contact K other end connects described switch trip circuit coil KM one end, and the switch trip circuit coil KM other end connects power supply N.
When the distribution transformer low pressure generation neutral line break of being protected; after signal acquisition circuit detects; after calculating judgement, signal that disconnection signal inputs to the A/D analog to digital conversion inputs to executive component with detecting, the power failure of tripping of the closed starting switch trip circuit of the normally opened contact K of executive component.
Fig. 5 A is this described invention optical fibre communication cable warning circuit block diagram, comprises optical transmission circuit 51, fiber optic cables 52; Optical transmission circuit changes the signal of telecommunication of distribution transformer low pressure zero line generation overcurrent distant place alarm into light signal and is transmitted to distribution supply intelligent control centre by fiber optic cables.
When the low zero line generation overcurrent of distribution transformer of operation, warning circuit carries out a distant place reports to the police, and the operator on duty obtains alarm condition, and the very first time is carried out accident treatment to the scene at once.
Fig. 5 B is this described invention radio communication warning circuit block diagram, and described radio communication warning circuit comprises two alarm signal input circuits, a signal encoding circuit, a signal transmission circuit; Described two alarm signal input circuits are respectively 1K, 2K, and described alarm signal coding circuit also comprises an A end, a B end, a C end, and described signal transmission circuit has a D end, a F end, a G end, a N end; Described alarm signal input circuit 1K input zero line over-current signal, 2K input neutral line break trip signal, described radio alarming coding circuit A termination power positive pole, B termination power negative pole, the described signal transmission circuit D end of C termination, described signal transmission circuit G termination power positive pole, N termination power negative pole, F termination transmitting antenna.
Described radio alarming circuit adopts the Internet, mobile phone.
If the low zero line generation overcurrent of the distribution transformer of being protected, warning circuit carries out a distant place reports to the police, and the operator on duty obtains alarm condition, and the very first time is carried out accident treatment to the scene at once.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (6)
1. a distribution transformer low pressure zero line overcurrent, broken string distant place alarm is characterized in that: comprise signal acquisition circuit, signal judging circuit, switch trip circuit, warning circuit; Described signal acquisition circuit connects signal judging circuit, and signal judging circuit connects switch trip circuit, warning circuit; When distribution transformer low pressure zero line generation overcurrent, broken string, carry out a distant place and report to the police the protector would trip.
2. distribution transformer low pressure zero line overcurrent according to claim 1, broken string distant place alarm is characterized in that: described signal acquisition circuit, comprise a circular iron core, a winding, and described winding is enclosed within on the circular iron core; Scurry into the zero line that distribution transformer secondary low-voltage winding is drawn in the circular iron core of described signal acquisition circuit; Two terminations of described signal acquisition circuit winding connect signal judging circuit respectively.
3. distribution transformer low pressure zero line overcurrent according to claim 1, broken string distant place alarm is characterized in that: described signal judging circuit, comprise an A/D analog-digital converter circuit, and calculate decision circuitry, executive component; Described A/D analog-digital converter circuit connects the calculating decision circuitry, calculates decision circuitry and connects executive component, and executive component connects described warning circuit, switch trip circuit respectively.
4. distribution transformer low pressure zero line overcurrent according to claim 1, broken string distant place alarm, it is characterized in that: described switch trip circuit comprises a breaking coil, the executive component normally opened contact K of described signal judging circuit; Executive component normally opened contact K one end of described signal judging circuit connects power supply L, and the normally opened contact K other end connects described switch trip circuit coil one end, and the switch trip circuit coil other end connects power supply N.
5. distribution transformer low pressure zero line overcurrent according to claim 1, broken string distant place alarm, it is characterized in that: described warning circuit comprises the optical transmission circuit of fiber optic cables, optical transceiver circuit; Optical transmission circuit changes the signal of telecommunication of distribution transformer low pressure zero line overcurrent, broken string distant place alarm into light signal and is transmitted to distribution supply intelligent control centre by fiber optic cables.
6. distribution transformer low pressure zero line overcurrent according to claim 1, broken string distant place alarm, it is characterized in that: described warning circuit comprises two alarm signal input circuits of radio alarming circuit, a signal encoding circuit, a signal transmission circuit; Described two alarm signal input circuits are respectively 1K, 2K, and described alarm signal coding circuit also comprises an A end, a B end, a C end, and described signal transmission circuit has a D end, a F end, a G end, a N end; Described alarm signal input circuit 1K input zero line over-current signal, 2K input neutral line break trip signal, described radio alarming coding circuit A termination power positive pole, B termination power negative pole, the described signal transmission circuit D end of C termination, described signal transmission circuit G termination power positive pole, N termination power negative pole, F termination transmitting antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102106055A CN102290859A (en) | 2010-06-19 | 2010-06-19 | Low-voltage zero line over-current and breakage remote alarm of distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102106055A CN102290859A (en) | 2010-06-19 | 2010-06-19 | Low-voltage zero line over-current and breakage remote alarm of distribution transformer |
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| CN102290859A true CN102290859A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102106055A Pending CN102290859A (en) | 2010-06-19 | 2010-06-19 | Low-voltage zero line over-current and breakage remote alarm of distribution transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036197A (en) * | 2012-12-13 | 2013-04-10 | 宁波电业局 | Protective device of broken zero line for low-pressure power utilization system |
| CN103457240A (en) * | 2012-05-31 | 2013-12-18 | 洛阳恒光特种变压器有限公司 | Modifying method of transformer overcurrent relay protection |
| CN112433127A (en) * | 2020-11-13 | 2021-03-02 | 珠海许继电气有限公司 | Fault type identification method and device based on platform area intelligent fusion terminal |
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| CN101145683A (en) * | 2007-10-31 | 2008-03-19 | 李志学 | Control device for residual current of low-voltage power grid |
| CN201130848Y (en) * | 2007-03-07 | 2008-10-08 | 陈家斌 | Control type aftercurrent motion protector and anti-theft device |
| CN201233807Y (en) * | 2008-07-25 | 2009-05-06 | 小原(南京)机电有限公司 | Feed-through rectangular current mutual inductor |
| CN201312128Y (en) * | 2008-11-26 | 2009-09-16 | 陈家斌 | Loss-reducing and electricity-saving automatic switching device for power transformer |
| CN102270880A (en) * | 2010-06-07 | 2011-12-07 | 陈家斌 | Intelligent control device for 10kV transformer power supply district |
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2010
- 2010-06-19 CN CN2010102106055A patent/CN102290859A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130848Y (en) * | 2007-03-07 | 2008-10-08 | 陈家斌 | Control type aftercurrent motion protector and anti-theft device |
| CN101145683A (en) * | 2007-10-31 | 2008-03-19 | 李志学 | Control device for residual current of low-voltage power grid |
| CN201233807Y (en) * | 2008-07-25 | 2009-05-06 | 小原(南京)机电有限公司 | Feed-through rectangular current mutual inductor |
| CN201312128Y (en) * | 2008-11-26 | 2009-09-16 | 陈家斌 | Loss-reducing and electricity-saving automatic switching device for power transformer |
| CN102270880A (en) * | 2010-06-07 | 2011-12-07 | 陈家斌 | Intelligent control device for 10kV transformer power supply district |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457240A (en) * | 2012-05-31 | 2013-12-18 | 洛阳恒光特种变压器有限公司 | Modifying method of transformer overcurrent relay protection |
| CN103036197A (en) * | 2012-12-13 | 2013-04-10 | 宁波电业局 | Protective device of broken zero line for low-pressure power utilization system |
| CN112433127A (en) * | 2020-11-13 | 2021-03-02 | 珠海许继电气有限公司 | Fault type identification method and device based on platform area intelligent fusion terminal |
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Application publication date: 20111221 |