CN105223392A - Based on the Anti-fradulance of IEC62056 standard - Google Patents
Based on the Anti-fradulance of IEC62056 standard Download PDFInfo
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Abstract
<b> the present invention relates to electric-power metering technical field, it is a kind of Anti-fradulance based on IEC62056 standard, it comprises signal acquisition module, information management module, power module and communication module, the output terminal of signal acquisition module is electrically connected with the input end of information management module, information management module is electrically connected with communication module, and power module is electrically connected with information measurement module, information management module, communication module respectively.Reasonable and compact in structure of the present invention, easy to use, it adopts two panels electric energy computation chip to carry out acquisition and processing to the signal of major loop, subloop respectively, when the difference of major-minor measurement channel energy value be greater than or equal to energy value 12.5% and the duration at more than 12s, then be judged to be stealing, leakage events, the accurate-metering of electric energy can be realized and can accurately screen various electricity filching behavior, there is safe, laborsaving, easy, efficient feature.</b>
Description
Technical field
the present invention relates to electric-power metering technical field, is a kind of Anti-fradulance based on IEC62056 standard.
Background technology
at present, the anti-stealing electricity function that common single-phase counter electric energy meter is very not strong, only simply to uncap warning function with an Antitheft lead seal or one, can not measure real power, cannot accomplish anti-electricity-theft thoroughly when stealing occurs.Therefore, how to improve metering precision, accurately capture the development trend that stealing leakage events is current single-phase electric energy meter.Secondly, electric energy meter now adopts RS-485 mode to carry out communication mostly, is very easily subject to extraneous interference in the process of data transmission, such as the impact of thunderbolt, the data transmission made the mistake, because of the continuous data of mistake, may bring the loss of economic interests to power supply department.Again, electric energy meter communication, develop into GSM(GlobalSystemforMobileCommunication from initial power line carrier, global system for mobile communications) and GPRS(GeneralPacketRadioService, general packet radio service), but in practice, single GPRS transmission speed is not high, the real-time performance of data transmission is poor.
Summary of the invention
the invention provides a kind of Anti-fradulance based on IEC62056 standard, overcome the deficiency of above-mentioned prior art, it is not strong that it effectively can solve anti-stealing electricity function in existing electric energy metrical process, the problem of extraneous interference is very easily subject in the process that RS-485 transmits in data, and the problem that single GPRS transmission speed is not high, the real-time performance of data transmission is poor.
technical scheme of the present invention is realized by following measures: a kind of Anti-fradulance based on IEC62056 standard, comprise signal acquisition module, information management module, power module and communication module, the output terminal of signal acquisition module is electrically connected with the input end of information management module, information management module is electrically connected with communication module, power module respectively with information measurement module, information management module, communication module is electrically connected, wherein, signal acquisition module comprises the first shunt, second shunt, resistance pressure-dividing network, first metering module, second metering module, the output terminal of the first shunt is electrically connected with the first input end of the first metering module, first output terminal of resistance pressure-dividing network is electrically connected with the second input end of the first metering module, the output terminal of the first metering module is electrically connected with the first input end of information management module, the output terminal of the second shunt is electrically connected with the first input end of the second metering module, second output terminal of resistance pressure-dividing network is electrically connected with the second input end of the second metering module, and the output terminal of the second metering module is electrically connected with the second input end of information management module.
here is the further optimization and/or improvements to foregoing invention technical scheme:
above-mentioned communication module comprises optical fiber communication unit, and optical fiber communication unit is electrically connected with information management module.
above-mentioned communication module comprises 3G(3rd-Generation, 3G (Third Generation) Moblie) communication unit, 3G communication unit is electrically connected with information management module.
above-mentioned information management module comprises single-chip microcomputer, single-chip microcomputer is parallel with LCD(LiquidCrystalDisplay, liquid crystal display) display, button, EEPROM(ElectricallyErasableProgrammableRead-OnlyMemory, EEPROM (Electrically Erasable Programmable Read Only Memo)), flashlight output circuit, single-chip microcomputer is connected with communication module.
above-mentioned power module comprises power supply, Power Management Unit, backup battery unit, first output terminal of power supply is connected with the first metering module, the second metering module respectively, and the second output terminal of power supply is connected with information management module, backup battery unit respectively by Power Management Unit; Or/and the first shunt and the second shunt are copper manganese shunt.
reasonable and compact in structure of the present invention, easy to use, it adopts two panels electric energy computation chip to carry out acquisition and processing to the signal of major loop, subloop respectively, when the difference of major-minor measurement channel energy value be greater than or equal to energy value 12.5% and the duration at more than 12s, then be judged to be stealing, leakage events, the accurate-metering of electric energy can be realized and can accurately screen various electricity filching behavior, power supply department is made when leakage events of sneaking current occurs, still can accurately to know electric energy metrical information; When visiting to check meter, by Optical Fiber Transmission, power supply department accurately can know the electricity consumption data of each user, and transmitting procedure is extremely stable, safety, is not subject to external interference; Still can be communicated with power-management centre by 3G wireless network when electric energy meter Optical Fiber Physical link failure, improve the remote command dispatching of power-management centre, when there is harmful accident in a certain region, can located sites rapidly, shorten emergency repair time, reduce economic loss; Low cost, low-power consumption, safe and convenient to use, application prospect is boundless, has safe, laborsaving, easy, efficient feature.
Accompanying drawing explanation
accompanying drawing 1 is the structured flowchart of preferred embodiment.
accompanying drawing 2 is the circuit theory diagrams of the first shunt and the second shunt in preferred embodiment.
accompanying drawing 3 is the circuit theory diagrams of signal acquisition module in preferred embodiment.
accompanying drawing 4 is the structural representation of optical fiber communication unit in the present invention.
accompanying drawing 5 is the application schematic diagram of 3G communication unit in preferred embodiment.
accompanying drawing 6 is the circuit theory diagrams of message processing module in preferred embodiment.
accompanying drawing 7 is the circuit theory diagrams of power module in the present invention.
coding in accompanying drawing is respectively: 1 is the first shunt, and 2 is the second shunt, and 3 is resistance pressure-dividing network, 4 is the first metering module, and 5 is the second metering module, and 6 is optical fiber communication unit, 7 is 3G communication unit, and 8 is single-chip microcomputer, and 9 is LCD display, 10 is button, and 11 is EEPROM, and 12 is flashlight output circuit, 13 is power supply, 14 is Power Management Unit, and 15 is backup battery unit, and 16 is power-management centre.
Embodiment
the present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and actual conditions.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
as accompanying drawing 1, 2, 3, 4, 5, 6, shown in 7, signal acquisition module should be comprised based on the Anti-fradulance of IEC62056 standard, information management module, power module and communication module, the output terminal of signal acquisition module is electrically connected with the input end of information management module, information management module is electrically connected with communication module, power module respectively with information measurement module, information management module, communication module is electrically connected, wherein, signal acquisition module comprises the first shunt 1, second shunt 2, resistance pressure-dividing network 3, first metering module 4, second metering module 5, the output terminal of the first shunt 1 is electrically connected with the first input end of the first metering module 4, first output terminal of resistance pressure-dividing network 3 is electrically connected with the second input end of the first metering module 4, the output terminal of the first metering module 4 is electrically connected with the first input end of information management module, the output terminal of the second shunt 2 is electrically connected with the first input end of the second metering module 5, second output terminal of resistance pressure-dividing network 3 is electrically connected with the second input end of the second metering module 5, and the output terminal of the second metering module 5 is electrically connected with the second input end of information management module.
should be the key component of this electric energy meter based on the signal acquisition module of the Anti-fradulance of IEC62056 standard, the whether accurate precision and stability directly involving electric energy meter of signals collecting, closely bound up with the performance of electric energy meter.The main control chip of signal acquisition module adopts single-phase electric energy computation chip ADE7755, and signal acquisition circuit figure as shown in Figure 2,3.System Real-Time Monitoring phase line, neutral line current and line voltage, employing two panels electric energy computation chip ADE7755 (L), ADE7755 (N) carry out acquisition and processing to the signal of major loop, subloop respectively.Wherein, the major loop signal acquisition process unit being core with ADE7755 (L) with phase line be with reference to (representing with label VL in Fig. 3), the subloop signal acquisition process unit being core with ADE7755 (N) with zero line be reference (representing with label VN in Fig. 3).By conditioned signal V1L, V2L and V1N of signal condition cell translation, V2N by delivering to electric current, the voltage channel of ADE7755 (L) and ADE7755 (N) after frequency overlapped-resistable filter respectively.In ADE7755, the over-sampling frequency of ADC reaches 900kHz, and for eliminating aliasing, frequency overlapped-resistable filter employing is the RC low-pass filter of 400kHz by frequency.Above-mentioned first shunt 1 and the second shunt 2 are copper manganese shunt, should based on the signal acquisition module of the Anti-fradulance of IEC62056 standard as shown in accompanying drawing 2,3.The conditioning of phase line, neutral line current signal realizes by manganese copper diverter, and the conditioning of mains voltage signal is realized by resistance pressure-dividing network 3.With phase line, zero line for reference ground, the conditioned signal that line voltage obtains after resistance pressure-dividing network 3 is sent to the voltage channel of ADE7755 (L), ADE7755 (N) respectively.V is line voltage; R3, R6 and R9 are potential-divider network resistance, and wherein R3 and R6 is 1K Ω, R9 is 1M Ω.
when there is not stealing, drain conditions, information management module only measures the energy value of major loop, in measurement loop, when the difference of major-minor measurement channel energy value be greater than or equal to energy value 12.5% and the duration at more than 12s, then be judged to be stealing, leakage events, information management module selects the large loop of energy value to measure.Therefore, when stealing, leakage events occur, should still can realize the accurate-metering of electric energy based on the Anti-fradulance of IEC62056 standard and can accurately screen various electricity filching behavior.ADE7755 single-phase measurement chip should be based on the first metering module 4 in the Anti-fradulance of IEC62056 standard and the second metering module 5, this chip is the low-cost and high-performance chip that electric energy measurement is produced specially, is a high precision electric energy metrical IC being applicable to single phase distribution system.First metering module 4 and the second metering module 5 can provide instantaneous active power based on bus voltage and Current calculation and average active power.The unique mimic channel used in ADE7755 is ADC and reference voltage circuit, other signal transacting all (such as multiplication and filtering) are all realize at numeric field, this signal processing method can with environmental baseline and time variations very on a large scale in excellent stability and precision are provided.Should, based on the Anti-fradulance of IEC62056 standard, power supply department be made when leakage events of sneaking current occurs, still can accurately to know electric energy metrical information.
according to actual needs, the above-mentioned Anti-fradulance based on IEC62056 standard can be made further optimization and/or improvements:
as shown in accompanying drawing 1,4, above-mentioned communication module comprises optical fiber communication unit 6, and optical fiber communication unit 6 is electrically connected with information management module.Based on the fiber functions modular structure of the Anti-fradulance of IEC62056 standard, should form primarily of IEC62056 standard protocol stack, communication port, application process module and logical device unit.In design, optical-fibre communications agreement is with reference to IEC62056 standard, comprise physical equipment drivings to the communication of systematic electricity dispatching center 16 end, logic connection management, the assembling of application layer encoding and decoding and data link layer frame and parsing, formation power-management centre 16 standard communication interface; PORT COM part provides the physical medium of harmonic meter optical fiber for communication or the driving of communication modes, provides communication channel; Application process module is by completing the data management of three phase harmonic electric energy meter, event report and management work to the coordination of logical device each in logical block.Simultaneously by managing electric energy meter and power-management centre 16 to the scheduling of communication protocol stack; In IEC6256 standard agreement, logical device unit is made up of several logical device, and each logical device is made up of several COMSEM interface class objects again, have been cooperatively interacted certain specific function by some different COSEM objects.Optical fiber should be adopted to carry out two-way communication based between the Anti-fradulance of IEC62056 standard and power-management centre 16, and electric energy measurement data can be transferred to power-management centre 16, also the steering order of power-management centre 16 can be delivered to electric energy meter.IEC62056 standard communication protocol is employed in data communication process.The major advantage of this agreement is used to have: each instrument function realizes standardization by interface class; Possesses multifactor authentication function; By the definition of object model, make the display of various kind of energy and transmission data all can adopt unique identification code to identify; Object model and communication media have nothing to do.
as shown in accompanying drawing 1,5, above-mentioned communication module comprises 3G communication unit 7,3G communication unit 7 and is electrically connected with information management module.Should based on the 3G communication unit 7 applied logic block diagram of the Anti-fradulance of IEC62056 standard as shown in Figure 5.MC706CDMAEV-DO uses AT Command Set, communicated with outer CPU with USB interface by UART, realize the function such as wireless transmission and reception, Base-Band Processing, audio frequency process, like this when network system Optical Fiber Physical path breaks down, two-way communication can be carried out by 3G wireless network and power-management centre 16.Single GPRS transmission speed is not high, can provide the transfer rate of 115kbps, and 3G technology has in wireless transmission speed relative to GSM and GPRS and significantly improves, general downstream rate is 3.1Mbps, upstream rate is 1.8Mbps, can well meet the wireless communication needs of ammeter.When optical fiber communication physical circuit breaks down, should communicate with adopting 3G wireless network between power-management centre 16 based on the Anti-fradulance of IEC62056 standard, the real-time that data are transmitted can be ensured greatly, in addition, it also can by problematic electric energy meter relevant information, accurately and timely pass to power-management centre 16 by wireless network, make commander can obtain relevant information in time, and then make accurate judgement, by the positional information that GPS in 3G communication unit 7 uploads, power-management centre 16 can arrange engineering staff nearby to safeguard.
as shown in accompanying drawing 1,6, above-mentioned information management module comprises single-chip microcomputer 8, and single-chip microcomputer 8 is parallel with LCD display 9, button 10, EEPROM11, flashlight output circuit 12, single-chip microcomputer 8 is connected with communication module.The hardware circuit of message processing module is primarily of part compositions such as flashlight output circuit 12, button 10 and LCD display 9, data storage circuitry, battery voltage detection circuits.Flashlight output circuit 12 uses the I/O mouth PA2 of ADE7755 to control meritorious pulse and exports, and when electric energy meter metering active energy reaches the electric energy representated by a pulse, P1.2 is set to high level, triode ON, thus light emitting diode D2 is bright; Continue 40ms(pulse width) after, P1.2 is set to low level, and triode ends, and D2 extinguishes; Button 10 is mainly used in the displaying contents switching LCD display 9, and as manually settling accounts switch, ADE7755 adopts interrupt mode respective keys 10; Display unit adopts the field type LCD display 9 of low-power consumption, and displayable content comprises current meritorious total electric energy, oppositely active energy, history active energy, the reverse active energy of history, date, time, instantaneous voltage, electric current, active power and power factor etc.; Information management module adopts AT24C64 to be used for the configuration parameter of storage system, calibration parameter and electric quantity data, is connected to PC0 and the PC1 mouth of ADE7755; The PA0 of ADE7755 is used to detect the output state of cell voltage.The control system of the whole Anti-fradulance based on IEC62056 standard has been come by AT89C51 system, AT89C51 controls the normal operation of whole ic for energy metering: the duty of monitoring ADE7755, meritorious, idle, applied power and electric current, magnitude of voltage is read from ADE7755 register, output to digital pipe display circuit, the loss of data time in preservation data to storer to prevent from having a power failure, realize the response to keyboard operation, and the data communication etc. of process and remote computer.
as shown in accompanying drawing 1,7, above-mentioned power module comprises power supply 13, Power Management Unit 14, backup battery unit 15, first output terminal of power supply 13 is connected with the first metering module 4, second metering module 5 respectively, and the second output terminal of power supply 13 is connected with information management module, backup battery unit 15 respectively by Power Management Unit 14.Should based on the Anti-fradulance of IEC62056 standard D.C. regulated power supply module respectively with phase line, zero line be with reference to ground, point two-way is respectively hung oneself after the circuit such as step-down current limliting, rectifying and wave-filtering and voltage stabilizing, export two-way 5V power supply for signal gathering unit work, export 3.6V for message processing module work simultaneously.
following beneficial effect should be had: make power supply department when leakage events of sneaking current occurs, still can accurately know electric energy metrical information based on the Anti-fradulance of IEC62056 standard; When visiting to check meter, by Optical Fiber Transmission, power supply department accurately can know the electricity consumption data of each user, and transmitting procedure is extremely stable, safety, is not subject to external interference; Still can be communicated with power-management centre 16 by 3G wireless network when electric energy meter Optical Fiber Physical link failure, improve the remote command dispatching of power-management centre 16, when there is harmful accident in a certain region, can located sites rapidly, shorten emergency repair time, reduce economic loss; Low cost, low-power consumption, safe and convenient to use, application prospect is boundless.
above technical characteristic constitutes most preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (9)
1. the Anti-fradulance based on IEC62056 standard, it is characterized in that comprising signal acquisition module, information management module, power module and communication module, the output terminal of signal acquisition module is electrically connected with the input end of information management module, information management module is electrically connected with communication module, power module respectively with information measurement module, information management module, communication module is electrically connected, wherein, signal acquisition module comprises the first shunt, second shunt, resistance pressure-dividing network, first metering module, second metering module, the output terminal of the first shunt is electrically connected with the first input end of the first metering module, first output terminal of resistance pressure-dividing network is electrically connected with the second input end of the first metering module, the output terminal of the first metering module is electrically connected with the first input end of information management module, the output terminal of the second shunt is electrically connected with the first input end of the second metering module, second output terminal of resistance pressure-dividing network is electrically connected with the second input end of the second metering module, and the output terminal of the second metering module is electrically connected with the second input end of information management module.
2. the Anti-fradulance based on IEC62056 standard according to claim 1, it is characterized in that communication module comprises optical fiber communication unit, optical fiber communication unit is electrically connected with information management module.
3. the Anti-fradulance based on IEC62056 standard according to claim 1 and 2, it is characterized in that communication module comprises 3G communication unit, 3G communication unit is electrically connected with information management module.
4. the Anti-fradulance based on IEC62056 standard according to claim 1 and 2, it is characterized in that information management module comprises single-chip microcomputer, single-chip microcomputer is parallel with LCD display, button, EEPROM, flashlight output circuit, single-chip microcomputer is connected with communication module.
5. the Anti-fradulance based on IEC62056 standard according to claim 3, it is characterized in that information management module comprises single-chip microcomputer, single-chip microcomputer is parallel with LCD display, button, EEPROM, flashlight output circuit, single-chip microcomputer is connected with communication module.
6. the Anti-fradulance based on IEC62056 standard according to claim 1 and 2, it is characterized in that power module comprises power supply, Power Management Unit, backup battery unit, first output terminal of power supply is connected with the first metering module, the second metering module respectively, and the second output terminal of power supply is connected with information management module, backup battery unit respectively by Power Management Unit; Or/and the first shunt and the second shunt are copper manganese shunt.
7. the Anti-fradulance based on IEC62056 standard according to claim 3, it is characterized in that power module comprises power supply, Power Management Unit, backup battery unit, first output terminal of power supply is connected with the first metering module, the second metering module respectively, and the second output terminal of power supply is connected with information management module, backup battery unit respectively by Power Management Unit; Or/and the first shunt and the second shunt are copper manganese shunt.
8. the Anti-fradulance based on IEC62056 standard according to claim 4, it is characterized in that power module comprises power supply, Power Management Unit, backup battery unit, first output terminal of power supply is connected with the first metering module, the second metering module respectively, and the second output terminal of power supply is connected with information management module, backup battery unit respectively by Power Management Unit; Or/and the first shunt and the second shunt are copper manganese shunt.
9. the Anti-fradulance based on IEC62056 standard according to claim 5, it is characterized in that power module comprises power supply, Power Management Unit, backup battery unit, first output terminal of power supply is connected with the first metering module, the second metering module respectively, and the second output terminal of power supply is connected with information management module, backup battery unit respectively by Power Management Unit; Or/and the first shunt and the second shunt are copper manganese shunt.
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Address after: 830011 Urumqi, Changchun, the new urban area in the Middle East Road, Lane No. two, No. 66, No. Applicant after: Electric Power Research Institute, State Grid Xinjiang Electric Power Company Applicant after: State Grid Corporation of China Address before: 831400 the Xinjiang Uygur Autonomous Region Urumqi Midong Chemical Industrial Park in Midong district nine Ditch Road No. 1939 Applicant before: Electric Power Research Institute, State Grid Xinjiang Electric Power Company Applicant before: State Grid Corporation of China |
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Inventor after: Wang Xingang Inventor after: Teng Zhaosheng Inventor after: Liu Weixin Inventor after: Zhang Jianwen Inventor after: Wang Gang Inventor after: Luo Qing Inventor after: Qi Shangmin Inventor after: Zhang Liang Inventor before: Wang Xingang |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160106 |