CN203660666U - A special transformer terminal used for a line loss monitoring system - Google Patents
A special transformer terminal used for a line loss monitoring system Download PDFInfo
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- CN203660666U CN203660666U CN201320861898.2U CN201320861898U CN203660666U CN 203660666 U CN203660666 U CN 203660666U CN 201320861898 U CN201320861898 U CN 201320861898U CN 203660666 U CN203660666 U CN 203660666U
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- chip microcomputer
- line loss
- special transformer
- monitoring system
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 23
- 238000002955 isolation Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 230000036772 blood pressure Effects 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims description 6
- 230000005622 photoelectricity Effects 0.000 claims description 6
- 238000013501 data transformation Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 9
- 230000001052 transient effect Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
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- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 238000005728 strengthening Methods 0.000 description 2
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a special transformer terminal used for a line loss monitoring system, and relates to the technical field of detection apparatuses for signals. The special transformer terminal used for the line loss monitoring system comprises a protection module with lightening proof, overvoltage protection and over-current protection functions, a serial communication interface module used for realizing a data transmission function, electrically connected with the protection module and with an ESD protection function, a photoelectric isolation module in electric connection with the serial communication interface module, realizing photoelectric isolation of signals and preventing interference signals from being transmitted to a single-chip microcomputer, the single-chip microcomputer used for carrying out operation on the signals which have been subjected to photoelectric isolation processing and outputting related instructions, a GPRS transmission module used for carrying out wireless transmission of the related instructions output by the single-chip microcomputer and a power supply module providing electric power for the special transformer terminal. According to the special transformer terminal, the single-chip microcomputer is introduced into line loss supervision, transient state instable data is eliminated, and the accuracy of line loss computing is raised.
Description
Technical field
The utility model relates to the checkout gear technical field of signal, relates in particular to a kind of special transformer terminals for line loss monitoring system.
Background technology
Reactive power comprises part energy loss, but this part energy loss is to be received and distributed with the form of magnetic energy by the sense of the reactance of the reactance of circuit, transformer copper wire winding, transformer core.In addition, the susceptance of line-to-ground branch road is capacitive, and it is consume reactive power not only, and can also be that circuit injects reactive power.
The reason that electric energy produces line loss in transmitting procedure has following several respects: a) resistance effect: the wire of circuit, and transformer, the winding of motor, is all the conductor of copper or aluminum.Electric energy, in power network transmission, must overcome the resistance of conductor, thereby produce electric energy loss, and this loss is indicated in conductor temp .-elevating.Because this loss is to be caused by the resistance of conductor, so be called resistance loss.
B) magnetic fields: alternating magnetic field need to be set up and maintain to transformer, just can boost or step-down.Rotating magnetic field need to be set up and maintain to motor, could turn round and drive manufacturing machine acting.Electric current is set up the process in magnetic field in electric equipment, namely electromagnetic conversion process.In this course, due to the effect of alternating magnetic field, in the iron core of electric equipment, produce magnetic hysteresis and eddy current, made iron core heating, thereby produced electric energy loss.Because this loss produces in electromagnetic conversion process, so be referred to as excitation loss, it causes iron core heating, is conventionally referred to as again iron loss.
C) managerial reason: because management of power supply and power utilization department and relevant personnel management is strict not, start a leak, cause user's transgression for using electricity and stealing, electric network element electric leakage, electric power meter error and meter reading personnel are leaked and are copied, and mistake is copied etc. and the energy loss that causes.Because this loss is without certain rule, be difficult for again measuring and calculating, therefore be called not clear loss, not clear loss is to produce in power supply enterprise's business process, so be called again business loss.
According to the general requirement of strengthening intelligent grid construction, energy-saving and emission-reduction, reduce line loss, strengthening line loss supervision dynamics attracts great attention, first line loss supervision wants the correct line loss that calculates, and existing special transformer terminals, as remote automatic meter reading, load management system, centralized meter-reading system, power information system etc. have all been ignored differentiation steady state data and the unstable data of transient state in the time copying and accepting data, unstable transient state data are introduced to line loss to be calculated, and it is incorrect that line loss is calculated, make the line loss monitoring result of intelligent grid inaccurate.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of special transformer terminals for line loss monitoring system, and described special transformer terminals is introduced single-chip microcomputer and got rid of the unstable data of transient state in line loss supervision, has improved the accuracy that line loss is calculated.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of special transformer terminals for line loss monitoring system, is characterized in that comprising: the protection module with anti-lightning strike, overvoltage protection and overcurrent protection function; For the serial communication interface module with esd protection function that realizes data-transformation facility and be electrically connected with protection module; Be electrically connected with serial communication interface module and realize the photoelectric isolation module that signal is carried out photoelectricity isolation and prevents interference signal to be transferred to single-chip microcomputer; For the signal after photoelectricity isolation processing being carried out to computing and exporting the single-chip microcomputer of dependent instruction; For the dependent instruction of single-chip microcomputer output being carried out to the GPRS transport module of wireless transmission; And the power module that is used to described special transformer terminals to power.
Preferably, described power module comprises the Switching Power Supply for AC power being converted to DC power supply; For being carried out to step-down and voltage stabilizing processing, then exports to respectively the direct current of Switching Power Supply output the lowering and stabilizing blood pressure module of GPRS transport module, single-chip microcomputer and insulating power supply module; And for exporting to respectively the insulating power supply module of photoelectric isolation module and serial communication interface module after step-down and voltage stabilizing direct current after treatment carry out isolation processing.
Preferably, described serial communication interface module is 485 communication modules.
Preferably, described single-chip microcomputer uses STM32 series A RM processor.
The beneficial effect that adopts technique scheme to produce is: described special transformer terminals is introduced single-chip microcomputer and got rid of the unstable data of transient state in line loss supervision, has improved the accuracy that line loss is calculated.Use photoelectric isolation module and protection module, stability and the fail safe of special transformer terminals are strengthened, make the line loss monitoring result of intelligent grid more reliable, adopt lowering and stabilizing blood pressure module and insulating power supply module simultaneously, make the Power supply of special transformer terminals safer, more stable, improved the stability of special transformer terminals operation.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is theory diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of special transformer terminals for line loss monitoring system, comprising: the protection module with anti-lightning strike, overvoltage protection and overcurrent protection function; For the serial communication interface module with esd protection function that realizes data-transformation facility and be electrically connected with protection module, described serial communication interface module is 485 communication modules, and 485 communication modules can use ISL315EIBZ; Be electrically connected with serial communication interface module and realize the photoelectric isolation module that signal is carried out photoelectricity isolation and prevents interference signal to be transferred to single-chip microcomputer, photoelectric isolation module can use PC817; For the signal after photoelectricity isolation processing being carried out to computing and exporting the single-chip microcomputer of dependent instruction, described single-chip microcomputer uses STM32 series A RM processor; For the dependent instruction of single-chip microcomputer output being carried out to the GPRS transport module of wireless transmission, described GPRS transport module can use M590; And the power module that is used to described special transformer terminals to power.
Described power module comprises the Switching Power Supply for AC power being converted to DC power supply; Then the lowering and stabilizing blood pressure module of exporting to respectively GPRS transport module, single-chip microcomputer and insulating power supply module for the direct current of Switching Power Supply output is carried out to step-down and voltage stabilizing processing, described lowering and stabilizing blood pressure module can be used BPE10-WD05P12U-SC; And for exporting to respectively the insulating power supply module of photoelectric isolation module and serial communication interface module after step-down and voltage stabilizing direct current after treatment carry out isolation processing, described insulating power supply module can be used SCGL05U.
Operation principle: electric energy meter is connected with 485 communication modules by protection module; can effectively prevent that by protection module thunderbolt, overvoltage and overcurrent from causing damage to described 485 communication modules; described 485 communication modules are with esd protection ability; and with transmitting-receiving ena-bung function, greatly strengthen antijamming capability.Be transferred to photoelectric isolation module from the data of 485 interface collections of electric energy meter through 485 communication modules, in order to avoid external interference signals is introduced single-chip microcomputer, and protect single-chip microcomputer, single-chip microcomputer judge Real-time Collection to electric energy meter data whether exceed sudden change value, sudden change value issues parameter by main website and gets, if exceed sudden change value, single-chip microcomputer is cast out the data that collect; If do not exceed sudden change value, single-chip microcomputer is temporarily stored into the data that collect the memory block of single-chip microcomputer, then the data of described memory block are sent to main website by GPRS transport module, for the line loss observation system of main website provides steady state data accurately.
Described single-chip microcomputer is selected low cost but the very powerful ARM chip of function, and it comprises two serial ports, and a serial ports connects 485 communication modules through photoelectrical coupler, and another serial ports connects GPRS transport module; Described single-chip microcomputer comprises a certain amount of FLASH and RAM, meets special transformer terminals program curing and data cached demand completely; And contain independently watchdog circuit, ensure the reliability service of program.External ac power source is the utility model power supply, adopt lowering and stabilizing blood pressure module to obtain galvanic current source and power to single-chip microcomputer, and the power supply of photoelectric isolating circuit is provided by insulating power supply module, the optimum efficiency of isolating completely to reach inside and outside circuit.
Applied specific case herein principle of the present utility model and execution mode thereof are set forth, the explanation of above embodiment is just with helping understand method of the present utility model and core concept thereof.It should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not depart from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (4)
1. for a special transformer terminals for line loss monitoring system, it is characterized in that comprising: the protection module with anti-lightning strike, overvoltage protection and overcurrent protection function; For the serial communication interface module with esd protection function that realizes data-transformation facility and be electrically connected with protection module; Be electrically connected with serial communication interface module and realize the photoelectric isolation module that signal is carried out photoelectricity isolation and prevents interference signal to be transferred to single-chip microcomputer; For the signal after photoelectricity isolation processing being carried out to computing and exporting the single-chip microcomputer of dependent instruction; For the dependent instruction of single-chip microcomputer output being carried out to the GPRS transport module of wireless transmission; And the power module that is used to described special transformer terminals to power.
2. the special transformer terminals for line loss monitoring system according to claim 1, is characterized in that: described power module comprises the Switching Power Supply for AC power being converted to DC power supply; For being carried out to step-down and voltage stabilizing processing, then exports to respectively the direct current of Switching Power Supply output the lowering and stabilizing blood pressure module of GPRS transport module, single-chip microcomputer and insulating power supply module; And for exporting to respectively the insulating power supply module of photoelectric isolation module and serial communication interface module after step-down and voltage stabilizing direct current after treatment carry out isolation processing.
3. the special transformer terminals for line loss monitoring system according to claim 1 and 2, is characterized in that: described serial communication interface module is 485 communication modules.
4. the special transformer terminals for line loss monitoring system according to claim 1, is characterized in that: described single-chip microcomputer uses STM32 series A RM processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861898.2U CN203660666U (en) | 2013-12-25 | 2013-12-25 | A special transformer terminal used for a line loss monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861898.2U CN203660666U (en) | 2013-12-25 | 2013-12-25 | A special transformer terminal used for a line loss monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN203660666U true CN203660666U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320861898.2U Expired - Fee Related CN203660666U (en) | 2013-12-25 | 2013-12-25 | A special transformer terminal used for a line loss monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701214A (en) * | 2013-12-25 | 2014-04-02 | 国家电网公司 | Designed variable terminal for line loss monitoring system |
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2013
- 2013-12-25 CN CN201320861898.2U patent/CN203660666U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701214A (en) * | 2013-12-25 | 2014-04-02 | 国家电网公司 | Designed variable terminal for line loss monitoring system |
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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 |
Granted publication date: 20140618 Termination date: 20171225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |