CN203561681U - Voltage abnormity alarm of transformer - Google Patents
Voltage abnormity alarm of transformer Download PDFInfo
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- CN203561681U CN203561681U CN201320594727.8U CN201320594727U CN203561681U CN 203561681 U CN203561681 U CN 203561681U CN 201320594727 U CN201320594727 U CN 201320594727U CN 203561681 U CN203561681 U CN 203561681U
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Abstract
In order to know voltage abnormity of a transformer in time so as to remove the abnormity in first time and improve power supply quality, the utility model provides a voltage abnormity alarm of a transformer. The alarm comprises a voltage measurement module, a voltage abnormity determination module, a SMS short message communication module, a display arrangement module, and a self power supply module. The voltage measurement module measures voltage in real time, and provides digital measurement results to the voltage abnormity determination module. The voltage abnormity determination module analyzes and determines whether the voltage is abnormal. The SMS short message communication module sends alarm short messages the far-end communication equipment. The alarm can give out an alarm immediately when voltage of the transformer is abnormal, so that faults can be solved in shortest time, and influence on user caused by voltage abnormity is reduced, thereby greatly improving high-quality service level of power supply.
Description
Technical field
The utility model belongs to transformer fault pick-up unit field, more specifically, relates to a kind of transformer voltage abnormal alarm device, the Real-Time Monitoring for power supply department to transformer, stoichiometric point voltage.
Background technology
In recent years, supply network is increasingly sophisticated, often occurs the electric voltage exception (comprising brownout, overtension and power failure etc.) because transformer fault etc. causes in power supply process.Fault in power transformer can cause consequence widely, and form is that client's on a large scale power failure and form are for must change or at least keep in repair this failure transformer.The voltage long period causes damage to user in abnormality operation meeting, when serious, can cause device damage and product rejection, produces electricity consumption dispute, the image of infringement power supply enterprise.In the worst case, undesired disconnection can cause power failure in a big way.
In prior art, Chinese invention patent application CN200480039365.X discloses for detection of in the protected district being protected by differential protection, as the power transformer of protected object, the equipment of the fault in autotransformer or interconnection line of electric force, comprise for measure protected object all each moment phase current device, and for by each moment phase current be calculated as the device of fundamental frequency phasor, described equipment also comprises: the device that calculates the contribution to total negative phase-sequence difference current of negative-sequence current from each limit of protected object for the phase in-migration of the final power transformer in protected district by compensation, each limit of wherein said protected object is the power transformer as protected object, the windings at different levels of autotransformer, or as each end of the interconnection line of electric force of protected object, for when each amplitude of the negative-sequence current on each limit from protected object through compensating exceedes minimum value, the relatively relative position of the negative-sequence current on each limit from protected object through compensating in complex plane, to determine the source of negative-sequence current, it is abort situation, it is the device in protected district or outside protected district, wherein the source of the contrary direction negative-sequence current of any two in the negative-sequence current on each limit from protected object through compensating is outside protected district, described protected district defines with current transformer position, for disconnect the device of protected object when determining that the source of negative-sequence current is in protected district.But the mode of above-mentioned measurement negative-sequence current is more complicated on needed apparatus structure and in operation, is not suitable for applying on a large scale.
Utility model content
The purpose of this utility model is: abnormal to get rid of extremely in the very first time in order to grasp in time transformer voltage, improve power supply quality.In order to achieve the above object, the utility model provides a kind of transformer voltage abnormal alarm device, this device can integrally be arranged in batch meter, by be wired to voltage transformer secondary side in parallel with electric energy meter, Real-Time Monitoring transformer voltage, while finding electric voltage exception, at once electric voltage exception warning message is sent to the operation maintenance personnel of related transformer, operation maintenance personnel can be in the very first time on site fault clearing.
The scheme that the utility model technical solution problem adopts is:
A kind of transformer voltage abnormal alarm device, comprising: voltage measurement module, electric voltage exception judge module, SMS short message communication module, shows module is set, and self supply module; Wherein,
The real-time measuring voltage of described voltage measurement module, provides digital signal measurement result to electric voltage exception judge module;
The analysis of described electric voltage exception judge module judges that whether voltage is abnormal;
Described demonstration arranges the abnormal criterion of the visual setting voltage of module;
Described SMS short message communication module sends warning short message to apparatus for remote communication.
Further, described transformer voltage abnormal alarm device with metering with the electric energy meter voltage transformer secondary side that is wired in parallel, to obtain voltage to be monitored.
Further, by being set, the alert if of described transformer voltage abnormal alarm device monitors the voltage of different electric pressures.
Further, the voltage of described different electric pressures comprises: the high phase voltage 220V for low meter metering method, the line voltage 100V of massive quantity power supply and measurement metering method.
Further, the working power of described transformer voltage abnormal alarm device is from voltage transformer secondary side voltage.
Further, the operating voltage of described transformer voltage abnormal alarm device is single-phase AC 220V or single-phase AC 100V.
Further, transformer voltage abnormal alarm device also comprises accumulator, to make transformer temp. after power cut enough realize the warning function of transformer voltage abnormal alarm device.
The beneficial effects of the utility model are embodied in:
1, transformer voltage abnormal alarm device of the present utility model can be reported to the police at once when transformer voltage is abnormal, fault can be resolved in the shortest time, the impact that minimizing causes user because of electric voltage exception, thus the good service level of power supply greatly improved;
2, transformer voltage abnormal alarm device of the present utility model is connected in voltage transformer secondary side, by read write line, completes the setting for the criterion of electric voltage exception judge module, can to the voltage of different electric pressures, carry out monitoring, alarming with various standards;
3, transformer voltage abnormal alarm utensil of the present utility model has accumulator, still can complete warning function under power-off condition, and reliability is high;
4, transformer voltage abnormal alarm device integrated level of the present utility model is high, and volume is small and exquisite, and in parallel with electric energy meter, wiring is simple, can directly be installed in batch meter, is convenient to install.
Accompanying drawing explanation
Fig. 1 is the theory diagram of transformer voltage abnormal alarm device of the present utility model.
Fig. 2 is the circuit theory diagrams of transformer voltage abnormal alarm device groundwork part of the present utility model.
Fig. 3 is the circuit theory diagrams of transformer voltage abnormal alarm device self supply module of the present utility model.
Embodiment
Below in conjunction with accompanying drawing explanation specific embodiment of the utility model.
Referring to the theory diagram of the transformer voltage abnormal alarm device of Fig. 1, transformer voltage abnormal alarm device 100 comprises voltage measurement module 1, electric voltage exception judge module 2, SMS short message communication module 3, show module 4, self supply module 5 and accumulator 6 are set.In the running environment of transformer voltage abnormal alarm device 100, also comprise the apparatus for remote communication (for example one or more O&M personnel's mobile phones 7) for telecommunication, transformer 8, voltage transformer (VT) 9 and electric energy meter 10 to be monitored.
During work, transformer voltage abnormal alarm device 100 and electric energy meter 10 are parallel to the secondary side of mutual inductor 9, by voltage measurement module 1, measure in real time mutual inductor secondary side voltage, and be sent to electric voltage exception judge module 2 during by fructufy and analyze judgement, while judging electric voltage exception, by SMS short message communication module 3, send warning message.
Fig. 2 shows the circuit theory diagrams of transformer voltage abnormal alarm device groundwork part.The specific works process that voltage measurement module 1, electric voltage exception judge module 2, SMS short message communication module 3, demonstration is arranged to module 4 below in conjunction with Fig. 2 is elaborated.
Voltage measurement module 1 comprises step-down transformer PTC, A/D converting unit U0, voltage measurement unit U1.First the secondary side ac voltage signal of voltage transformer (VT) 9 is reduced to interchange low voltage signal through step-down transformer PTC, then through A/D converting unit U0, be converted into d. c. voltage signal and give voltage measurement unit U1, last voltage measurement unit U1 measures d. c. voltage signal and measurement feedback is completed to voltage measurement process to programmable processor U2 under the control of the programmable processor U2 of electric voltage exception judge module 2.
Electric voltage exception judge module 2 mainly comprises programmable microprocessor U2 and storage unit, and described storage unit is the storage unit that programmable processor U2 has self in this example.When voltage measurements feeds back to after programmable microprocessor U2, standard value or critical field that programmable microprocessor U2 stores in the digital quantity to the voltage signal receiving and storage unit according to the program pre-setting compare, and its result is relatively recorded to storage unit and outputs to SMS short message communication module 3.In a preferred embodiment, only when the result of described comparison, regard as voltage when defective, just the result of this comparison is outputed to SMS short message communication module 3.
In another preferred embodiment, the storage unit of electric voltage exception judge module 2 comprises one or more of EPROM, EEPROM, flash memory (flash) etc.
Show that module 4 is set mainly to be comprised button U3 and display screen U4 are set, the electric voltage exception criterion of K1, K2, K3 key and display screen U4 by button U3 is set to electric voltage exception judge module 2, method of operation etc. are carried out visual selection, setting, and the criterion setting etc. is stored in storage unit.
In a preferred embodiment, described cell stores the abnormal criterion of multiple voltage, for example:
1, massive quantity power supply and measurement voltage acceptability limit :-7%～+ 7% of rated voltage, i.e. 9.3kV-10.7kV, conversion table meter end line voltage is 93V-107V; It is qualified that voltage within the scope of this be considered as.
2, high for low meter voltage acceptability limit: phase voltage 0.22kV voltage monitoring point acceptability limit is rated voltage-10%～+ 7%, and conversion table meter end phase voltage is 0.198kV-0.2354kV; Line voltage 0.38kV voltage monitoring point acceptability limit is rated voltage-7%～+ 7%, and conversion table meter end line voltage is 0.3534kV-0.4066kV.Wherein phase voltage and line voltage any one exceed standard to be considered as voltage defective.
3, other requires definite specific criteria according to electricity consumption.
In another preferred embodiment, button U3 is set and adopts matrix keyboard, described display screen U4 adopts one or more of seven segment numerical tube display screen, LCD screen, LED screen, touch-screen etc.
Under electric voltage exception judge module 2 is after confirming voltage to exceed acceptability limit, send instructions to SMS short message communication module 3 send comprise the basic information of transformer and current abnormal voltage information at interior warning short message the mobile phone 7 to the one or more O&M personnel of far-end, complete alarm procedure.
In a preferred embodiment, described SMS short message communication module 3 adopts the TC35i of Siemens company.TC35i new generation of wireless communication gsm module, can fast and safely realize data, voice transfer, Short Message Service (SMS) and fax in system schema reliably.The operating voltage of module is 3.3～4.8V, can be operated in two frequency ranges of 900MHz and 1800MHz.There is AT Command Set interface, support short message, the fax of text and PDU pattern.In addition, this module also has phonebook function, MPTY, roaming measuring ability.With TC35 compatibility, and compact to design in this functions of modules, volume dwindles greatly.By the ZIF connector of 40PIN, realize the transmitted in both directions of power supply connection, instruction, data, voice signal and control signal.Module integrates radio circuit and base band, and its chief component structure is divided into 6 parts: GSM baseband processor, GSM radio-frequency module, supply module (ASIC), flash memory, ZIF connector and antennal interface.As the core of TC35i, baseband processor is mainly processed voice, the data-signal in GSM terminal, and has contained analog-and digital-functions all in cellular radio equipment.The setting that it is detailed and peripheral circuit and AT command set can obtain from the device handbook of market public publication.
Installing and using in process of transformer voltage abnormal alarm device 100, by demonstration, module 4 being set selects common massive quantity power supply and measurement and height to supply low meter, in the storage unit of electric voltage exception judge module 2, set monitoring voltage grade, abnormal voltage criterion, in SMS short message communication module 3, set alarm signal short message content and warning object operation maintenance personnel's mailing address etc.
The circuit theory diagrams of transformer voltage abnormal alarm device self supply module 5 shown in Figure 3.It mainly comprises step-down transformer PTC1, full-bridge rectification unit U5,5V DC voltage-stabilizing chip UA7805, accumulator 6.
Self supply module 5 adopts wide voltage design (80V-240V), the secondary voltage of voltage transformer (VT) 9 is reduced to 8V-24V through step-down transformer PTC1, then through the U5 rectification of full-bridge rectification unit, detuning ripple, finally by the direct current 5V voltage of 5V DC voltage-stabilizing chip UA7805 stable output.When transformer does not complete self power supply under power-off condition, accumulators 6 charges.When transformer has a power failure, accumulator provides electric energy to guarantee the normal warning function of having worked of whole voltage alarms based on pattern recognition incessantly.
Above each embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that the common engineering technical personnel in this area make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (5)
1. a transformer voltage abnormal alarm device, is characterized in that, comprising: voltage measurement module, electric voltage exception judge module, SMS short message communication module, show module is set, and self supply module; Wherein,
The real-time measuring voltage of described voltage measurement module, provides digital signal measurement result to electric voltage exception judge module;
The analysis of described electric voltage exception judge module judges that whether voltage is abnormal;
Described demonstration arranges the abnormal criterion of the visual setting voltage of module;
Described SMS short message communication module sends warning short message to apparatus for remote communication.
2. transformer voltage abnormal alarm device according to claim 1, is characterized in that, described transformer voltage abnormal alarm device with metering with the electric energy meter voltage transformer secondary side that is wired in parallel, to obtain voltage to be monitored.
3. transformer voltage abnormal alarm device according to claim 1, is characterized in that, the working power of described transformer voltage abnormal alarm device is from voltage transformer secondary side voltage.
4. transformer voltage abnormal alarm device according to claim 1, is characterized in that, the operating voltage of described transformer voltage abnormal alarm device is single-phase AC 220V or single-phase AC 100V.
5. transformer voltage abnormal alarm device according to claim 1, is characterized in that, transformer voltage abnormal alarm device also comprises accumulator, to make transformer temp. after power cut enough realize the warning function of transformer voltage abnormal alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594727.8U CN203561681U (en) | 2013-09-25 | 2013-09-25 | Voltage abnormity alarm of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320594727.8U CN203561681U (en) | 2013-09-25 | 2013-09-25 | Voltage abnormity alarm of transformer |
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| Publication Number | Publication Date |
|---|---|
| CN203561681U true CN203561681U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320594727.8U Expired - Fee Related CN203561681U (en) | 2013-09-25 | 2013-09-25 | Voltage abnormity alarm of transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529279A (en) * | 2013-09-25 | 2014-01-22 | 国网安徽省电力公司淮南供电公司 | Transformer voltage abnormality alarm |
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2013
- 2013-09-25 CN CN201320594727.8U patent/CN203561681U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529279A (en) * | 2013-09-25 | 2014-01-22 | 国网安徽省电力公司淮南供电公司 | Transformer voltage abnormality alarm |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20210925 |