CN2562195Y - Anomalous running measuring and recording instrument for intellectual network kilowatt meter - Google Patents
Anomalous running measuring and recording instrument for intellectual network kilowatt meter Download PDFInfo
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- CN2562195Y CN2562195Y CN 02232085 CN02232085U CN2562195Y CN 2562195 Y CN2562195 Y CN 2562195Y CN 02232085 CN02232085 CN 02232085 CN 02232085 U CN02232085 U CN 02232085U CN 2562195 Y CN2562195 Y CN 2562195Y
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Abstract
The utility model belongs to the electric energy measurement failure detection in an electric energy system, more particularly an intelligent networking electric energy measurement device exceptional operation measuring record instrument. The instrument consists of a voltage amplitude value phase position sampling circuit (1), a current amplitude phase position sampling circuit (2), a current mutual inductor open circuit short circuit signal detecting circuit (3), a current mutual inductor open circuit short circuit signal transforming circuit (4), a central processing unit(5), an intelligent amplitude value phase position failure judging circuit (6), an intelligent current mutual inductor open circuit short circuit failure judging circuit (7), a losing electric quantity measuring module (8), a clock circuit (9), a data recording circuit (10), a state display circuit (11), a network communication circuit (12), a power circuit (13) and a power down protection circuit (14). The device can effectively solve the key problems of the prior electric energy measurement failure detection record, which are low network intelligent degree, are poor adaptive capacity, can not accurately and integrally detect and record the exceptional operation state and failure, can not rapidly warn the failure, and so on.
Description
Affiliated technical field
The utility model belongs to the electric energy metrical fault detect in the electric system, particularly relates to a kind of intelligent network electric power meter misoperation instrument for measuring and recording.
Background technology
In the prior art, the fault detect record of electric power meter general only detects voltage or current amplitude and phase place.They all are to judge whether decompression of electric power meter according to the height of line voltage amplitude usually; Or judge whether defluidization of electric power meter according to the size of power network current amplitude; Or judge whether wiring error of electric power meter according to the phase relation of voltage and current.Above detection mode can only write down the fault-time of electric power meter, then can't judge and record for faults such as electricity consumption before the false wiring in the electric power meter, current transformer open circuit or short circuit, the table or abnormal occurrence, can't realize the fault that is detected is reported to the police real-time.Existing electric power meter also has the following disadvantages: fault detection capability is few, precision is low, intelligent degree is low, adaptive faculty is poor, can not accurately intactly detect and write down the various faults in the electric power meter; Then accurately judgement of the electric weight of losing during for fault type, failure mode, fault, accurate Calculation and reliable record; In addition, electric power meter network communications capability difference of the prior art or do not possess network communications capability, can not conform complexity, change frequent power distribution web development requirement, the various faults in the time of can't be to misoperation are reported to the police real-time.
Summary of the invention
The purpose of this utility model is a kind of intelligent network electric power meter misoperation instrument for measuring and recording that provides at the deficiency of existing electric power meter.This device can solve effectively that intelligent network degree in the existing electric energy metrical fault detect record is low, adaptive faculty is poor, can not accurately intactly detect and write down abnormal operating condition in the electric energy metrical and fault in real time, key issue such as fault alarm fast.This device can be realized before the wiring position, table of size, electric current and voltage phase sequence and phase place, the electric power meter of height, the electric current of real-time online detection of grid voltage states such as electricity consumption; According to testing result, whether accurately judge in the electric power meter phenomena of the failure such as decompression, shunting, negative phase sequence, misphase position, record also shows the fault beginning and ending time, separate, and accurately calculates the electric weight of losing under all kinds of failure modes; Can be under the various methods of operation of high and low voltage electric distribution electrical network, realize that intelligent network detects current transformer short circuit or open fault, record also shows beginning and ending time, separate of fault, and loses electric weight when accurately calculating all kinds of fault; Can realize network communicating function, in real time, apace all kinds of faults in the electric power meter are reported to the police.
The technical scheme that its technical matters that solves the utility model adopts is: intelligent network electric power meter misoperation instrument for measuring and recording is by voltage magnitude phase sampling circuit (1); current amplitude phase sampling circuit (2); current transformer open circuit short-circuit signal testing circuit (3); current transformer open circuit short-circuit signal translation circuit (4); central processing unit (5); intelligence amplitude phase fault decision circuitry (6); intelligence current transformer open circuit short trouble decision circuitry (7); lose electric quantity metering module (8); clock circuit (9); data recording circuit (10); status display circuit (11); network communications circuits (12); power circuit (13); power down protection circuit compositions such as (14).Wherein: intelligent amplitude phase fault decision circuitry (6) links to each other with voltage magnitude phase sampling circuit (1), current amplitude phase sampling circuit (2), central processing unit (5); Current transformer open circuit short-circuit signal translation circuit (4) links to each other with current transformer open circuit short-circuit signal testing circuit (3); Intelligence current transformer open circuit short trouble decision circuitry (7) links to each other with current transformer open circuit short-circuit signal testing circuit (3), current transformer open circuit short-circuit signal translation circuit (4), central processing unit (5); Losing electric quantity metering module (8) links to each other with intelligent amplitude phase fault decision circuitry (6), intelligent current transformer open circuit short trouble decision circuitry (7), clock circuit (9), central processing unit (5); Data recording circuit (10) and intelligent amplitude phase fault decision circuitry (6), intelligent current transformer open circuit short trouble decision circuitry (7), lose electric quantity metering module (8), clock circuit (9), central processing unit (5) and link to each other; Status display circuit (11) links to each other with central processing unit (5), clock circuit (9), data recording circuit (10); Network communications circuits (12) links to each other with central processing unit (5), data recording circuit (10); Power down protection circuit (14) links to each other with central processing unit (5), power circuit (13).Voltage magnitude phase sampling circuit (1) is used for the amplitude of line voltage and the phase place of line voltage are detected.Voltage magnitude phase sampling circuit (1) is weak electric signal by voltage transformer (VT) with the forceful electric power signal transformation of electrical network three-phase voltage, and to weak electric signal amplify, Filtering Processing, and the voltage magnitude signal after will handling and phase signal are exported to intelligent amplitude phase fault decision circuitry (6).Current amplitude phase sampling circuit (2) is used for the amplitude of power network current and the phase place of power network current are detected.Current amplitude phase sampling circuit (2) is weak electric signal by current transformer with the forceful electric power signal transformation of electrical network three-phase current, and weak electric signal carried out I-V conversion, amplification, Filtering Processing, and the current amplitude signal after will handling and phase signal are exported to intelligent amplitude phase fault decision circuitry (6).Current transformer open circuit short-circuit signal testing circuit (3) is used for short circuit of electric power meter current transformer or open fault are detected.Current transformer open circuit short-circuit signal testing circuit (3) comprises a high-frequency excitation signal generator, current transformer open circuit short-circuit signal testing circuit (3) applies high-frequency excitation signal respectively to each phase current mutual inductor, and the feedback signal that high-frequency excitation signal forms in the current transformer loop is exported to current transformer open circuit short-circuit signal translation circuit (4); Current transformer open circuit short-circuit signal testing circuit (3) carries out waveform transformation and shaping with high-frequency excitation signal, and the signal after conversion and the shaping is exported to intelligent current transformer open circuit short trouble decision circuitry (7) as reference signal.Current transformer open circuit short-circuit signal translation circuit (4) receive in the current transformer loop that provides by current transformer open circuit short-circuit signal testing circuit (3) feedback signal and to feedback signal amplify, filtering and shaping handle.Current transformer open circuit short-circuit signal translation circuit (4) has adopted self-adapting signal to amplify network, under the effect of central processing unit (5), can be according to different running environment, automatically adjust gain amplifier, but the running status of Intelligent Recognition intelligent network electric power meter misoperation instrument for measuring and recording adapts to the various running environment of intelligent network electric power meter misoperation instrument for measuring and recording automatically.Central processing unit (5) includes A/D converter, digital filter, program storage, jointly voltage signal, current signal and open circuit short-circuit signal are carried out analyzing and processing, and other interlock circuit of intelligent network electric power meter misoperation instrument for measuring and recording is implemented control.Intelligence amplitude phase fault decision circuitry (6) is under the acting in conjunction of voltage magnitude phase sampling circuit (1), current amplitude phase sampling circuit (2), central processing unit (5), voltage magnitude and phase signal that voltage magnitude phase sampling circuit (1) is provided, and the current amplitude that provides of current amplitude phase sampling circuit (2) and phase signal adopt vector calculus and Fourier transform to handle, analyze and judge electric power meter whether under-voltage operation, voltage-lose operation, whether have shunting (showing preceding electricity consumption); Whether voltage negative phase sequence operation, the operation of electric current misphase, current transformer are once or the anti-phase operation of secondary, and the kind of fault carried out Classification and Identification by separate and type, and will analyze and judged result is exported to respectively and lost electric quantity metering module (8) and data recording circuit (10).Intelligence current transformer open circuit short trouble decision circuitry (7) is at current transformer open circuit short-circuit signal testing circuit (3), current transformer open circuit short-circuit signal translation circuit (4), under the acting in conjunction of central processing unit (5), the feedback signal that current transformer open circuit short-circuit signal translation circuit (4) is provided adopts adaptive algorithm, in feedback signal complicated and changeable, short circuit of intellectual analysis current transformer or open fault characteristic signal, in the intelligent decision electric power meter current transformer once or secondary coil whether have damage, whether secondary circuit exists faults such as open circuit or short circuit, and failure mode carried out Classification and Identification by separate and type, and will analyze and judged result is exported to respectively and lost electric quantity metering module (8) and data recording circuit (10).Lose electric quantity metering module (8) and have calculating is lost when electric power meter breaks down the meritorious electric weight and the function of capacity of idle power, and have pulse output function.Lose electric quantity metering module (8) and be subjected to central processing unit (5), intelligence amplitude phase fault decision circuitry (6), the control of intelligence current transformer open circuit short trouble decision circuitry (7), when electric power meter breaks down, lose electric quantity metering module (8) according to the kind of fault-signal and separate, to the electric current and voltage amplitude signal, the electric current and voltage phase signal, carry out the amplitude reduction, phase transition, and the clock data that provides according to clock circuit (9), according to the vector Calculation Method, accurately calculate the electric weight of losing and export to data recording circuit (10), and by the pulse output end mouth, according to pulsed frequency and the pulse/electric weight constant set,, remote meter reading and calibration calibrating lose the electric weight computational data for providing.Lose electric quantity metering module (8) and also comprise and lose the electric energy tariff module, lose the actual electric weight amount of money of electric weight when being used to calculate the electric energy metrical fault.Lose electric quantity metering module (8) according to the quantity of losing electric weight,, calculate the actual electric weight amount of money of losing electric weight according to given rate; Also can according to given rate and accounting regime, calculate the actual electric weight amount of money of losing electric weight according to zero-time, the concluding time of fault by multiple rate mode.Clock circuit (9) is used for providing current time and timing signal to the various parts of time data that need of intelligent network electric power meter misoperation instrument for measuring and recording, and clock circuit (9) has manual clock check and correction and network time check and correction function.Data recording circuit (10) in central processing unit (5), intelligent amplitude phase fault decision circuitry (6), intelligent current transformer open circuit short trouble decision circuitry (7), lose under the acting in conjunction of electric quantity metering module (8), clock circuit (9), the electric weight that fault zero-time when electric power meter is broken down and concluding time, failure mode, fault take place is separate, accumulative total is lost during fault carries out accurate recording; All data of data recording circuit (10) all have password and power-down protection, and accumulative total is lost master datas such as electric weight when including fault zero-time and concluding time, failure mode, fault in every record data content at least separate, fault taking place.Data recording circuit (10) also comprises electric power meter operational factor record; as line voltage grade, metering method, current transformer transformer ratio etc.; and digital setting parameter value record such as accuracy of detection, the accuracy of measuring, operational factor, digital setting parameter etc. has password and power-down protection equally.The data recording of data recording circuit (10) can be exported to status display circuit (11), network communications circuits (12) as required.Status display circuit (11) comprises Chinese character LCD and other sound, optical indicator.Status display circuit (11) is under the acting in conjunction of central processing unit (5), clock circuit (9), data recording circuit (10), the current dynamic time data that can read clock circuit (9) provide, and the supplemental characteristics such as fault data, operational parameter data and digital setting valve in the video data writing circuit (10), wherein: literal shows that in the Chinese character mode numerical value shows with digital form.Status display circuit (11) can also be indicated the running status of intelligent network electric power meter misoperation instrument for measuring and recording.Network communications circuits (12) is used for intelligent network electric power meter misoperation instrument for measuring and recording and Surveillance center of management of power use department computing machine is a host computer, carry out connected network communication, the output interface of network communications circuits (12) includes the RS232 interface at least, RS485 interface and infrared interface, networking mode can be: by the power carrier mode, or by the cable transmission mode, or network with host computer by optical cable transmission mode etc., form the connected network communication network, also can pass through other communication system, power load supervisory system for example, Automatic meter reading system etc., with the host computer networking, form the connected network communication network indirectly.Network communications circuits (12), in central processing unit (5), under the acting in conjunction of data recording circuit (10), record data with real time fail information and data recording circuit (10) output, by the connected network communication network, communication protocol according to the rules, when electric power meter breaks down, be that host computer sends failure message in time to intra-office Surveillance center computing machine, reach real-time to the electric power meter abnormal failure, the purpose of Rapid Alarm, the various data recording of while in host computer transmission data recording circuit (10), and can receive the host computer instruction, revise operational factor and setting parameter in the data recording circuit (10), and clock circuit (9) is carried out the network clocking check and correction.Power circuit (13) is used to intelligent network electric energy metering misoperation instrument for measuring and recording that working power is provided, and includes power transformer, filter regulator circuit etc.Power down protection circuit (14) under the acting in conjunction of central processing unit (5), power circuit (13), the working power of the electric energy metrical of monitoring intelligent networking in real time fault detect record.When intelligent network electric power meter misoperation instrument for measuring and recording system operate outside power supply dead electricity, power down protection circuit (14) can start back-up source, for intelligent network electric power meter misoperation instrument for measuring and recording provides the operate as normal power supply.
The intelligent network electric power meter misoperation instrument for measuring and recording that the technical program provides, can realize that the real-time online of electric power meter under various running environment detects, according to testing result, whether accurately judge in the electric power meter all kinds of faults such as decompression, shunting, negative phase sequence, misphase position, record also shows the type, beginning and ending time, separate etc. of fault, and loses electric weight when accurately calculating various faults and taking place.The utlity model has network communicating function, can report to the police to various faults in the electric power meter real-time, can be separately and the existing supporting use of all kinds of high and low pressure electric power meters, can effectively strengthen the management of power use and prevent illegal electricity consumption, be a kind of broad-spectrum electric power meter misoperation instrument for measuring and recording.
Description of drawings
Accompanying drawing 1 is the module frame chart of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 2 is the voltage magnitude phase sampling circuit figure of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 3 is the current amplitude phase sampling circuit figure of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 4 is the current transformer open circuit short-circuit signal testing circuit figure of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 5 is the current transformer open circuit short-circuit signal translation circuit figure of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 6 is the central processing unit circuit diagram of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 7 is the intelligent amplitude phase fault decision circuitry figure of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 8 is the intelligent current transformer open circuit short trouble decision circuitry figure of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 9 is intelligent network electric power meter misoperation instrument for measuring and recording impulse output circuit figure
Accompanying drawing 10 is the clocking scheme of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 11 is the data recording circuit diagram of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 12 is the status display circuit figure of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 13 is the network communications circuits figure of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 14 is the power circuit diagram of intelligent network electric power meter misoperation instrument for measuring and recording.
Accompanying drawing 15 is the power down protection circuit diagram of intelligent network electric power meter misoperation instrument for measuring and recording.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is further described:
Accompanying drawing 1 is the module frame chart of intelligent network electric power meter misoperation instrument for measuring and recording.
In accompanying drawing 2, voltage magnitude phase sampling circuit (1) can adopt the miniature voltage transformer (VT) of HTPT202 more than at least 2 and the LM324 general-purpose operation amplifier that is no less than more than 1 constitutes, they carry out conversion, filtering and amplification with the electrical network three-phase voltage signal, draw by ADCUA, ADCUB, ADCUC, link to each other with the corresponding end of intelligent amplitude phase fault decision circuitry (6).
In accompanying drawing 3, the LM324 general-purpose operation amplifier that current amplitude phase sampling circuit (2) can adopt the HTCT202 micro-transformer of current more than at least 2 to be no less than more than 1 constitutes, they carry out conversion, filtering and amplification with the electrical network three-phase current signal, draw by ADCIA, ADCIB, ADCIC, link to each other with the corresponding end of intelligent amplitude phase fault decision circuitry (6).
In accompanying drawing 4, current transformer open circuit short-circuit signal testing circuit (3) can adopt the LM324 general-purpose operation amplifier that is no less than more than 1, and the JLD pickup coil more than at least 2 constitutes, current transformer open circuit short-circuit signal testing circuit (3) produces high-frequency excitation signal and reference signal, reference signal is drawn by PVR, links to each other with the corresponding end of central processing unit (5); High-frequency excitation signal applies pumping signal by the coupled pair current transformer; Pickup coil extracts the motivational feedback signal of current transformer.The motivational feedback signal of current transformer is drawn by FA1, FA2, FA3, links to each other with the corresponding end of current transformer open circuit short-circuit signal translation circuit (4).
In accompanying drawing 5, current transformer open circuit short-circuit signal translation circuit (4) can adopt and be no less than the multiple signals converter that four bidirectional analog switches 4066 more than 1 are formed, general integrated operational amplifier LM324 more than at least 1 and at least 1 above Schmidt trigger 40106 constitute, under the control of central processing unit (5), finish motivational feedback signal FA1 to current transformer, FA2, the switching of FA3, and under the control of central processing unit (5), automatically the running environment according to electric power meter changes, motivational feedback signal to current transformer carries out the automatic gain amplification, filter shape, and draw by CT, link to each other with the corresponding end of intelligent current transformer open circuit short trouble decision circuitry (7).
In accompanying drawing 6, can adopt one chip microcomputer PIC16F877/P and peripheral circuit thereof to constitute in the central processing unit circuit (5), frequency of operation is 20MHz, include A/D converter, digital filter, program storage, by its input/output terminal in, other functional unit of intelligent network electric power meter misoperation instrument for measuring and recording is controlled; And by JPSET, JPMOV, the instruction of JPADD input terminal reception Keyboard Control.
In accompanying drawing 7, intelligence amplitude phase fault decision circuitry (6) can adopt 16 to select 1 analog switch 4067 to constitute, ADA in central processing unit (5), ADB, ADC, ADD control down, the intelligence switched voltage, current input signal ADCUA, ADCUB, ADCUC, ADCIA, ADCIB, ADCIC holds to central processing unit AN, intelligent amplitude phase fault determining program by central processing unit (5), to the electric current and voltage amplitude signal, the electric current and voltage phase signal carries out fault analysis and judges, and failure message drawn by SDA and SCL, link to each other with the corresponding end of data recording circuit (10).Also has the electric weight of losing computing function in intelligent amplitude phase fault decision circuitry (6), in electric power meter generation voltage circuit generation decompression, under-voltage, negative phase sequence, and shunt (electricity consumption before the table) at current return, the current phase mistake, during faults such as current transformer error-polarity connection, intelligence amplitude phase fault decision circuitry (6) is introduced the clock signal of clock circuit (9) by SDA and SCL, and electric quantity metering module (8) is lost in startup, can accurately calculate the electric weight of losing, and can start as required and lose the electric energy tariff program and calculate the actual electric weight amount of money of losing electric weight, or calculate the actual electric weight amount of money of losing electric weight by multiple rate mode, draw by SDA and SCL, link to each other with the corresponding end of data recording circuit (10), and by the pulse output end mouth, for remote meter reading and calibration calibrating provide the computational data of losing electric weight.
In accompanying drawing 8, intelligence current transformer open circuit short trouble decision circuitry (7) can adopt data latches 74LS373 to constitute, under the control of central processing unit (5), the control signal of central processing unit (5) is defeated by current transformer open circuit short-circuit signal translation circuit (4) by KFA1, KFA2, KFA3 and control signal DI1, DI2, DI3, DI4, is used for control signal conversion and intelligence adjustment gain amplifier; Reference signal that provides by current transformer open circuit short-circuit signal testing circuit (3) and the current transformer motivational feedback signal that is provided by current transformer open circuit short-circuit signal translation circuit (4) are provided simultaneously, intelligent current transformer open circuit short trouble determining program by central processing unit (5), current transformer motivational feedback signal is carried out fault analysis to be judged, and failure message drawn by SDA and SCL, link to each other with the corresponding end of data recording circuit (10).Also has the electric weight of losing computing function in intelligent current transformer open circuit short trouble decision circuitry (7), in when, in electric power meter current transformer loop open circuit or short trouble taking place, intelligence current transformer open circuit short trouble decision circuitry (7) is introduced the clock signal of clock circuit by SDA and SCL, and electric quantity metering module (8) is lost in startup, accurately calculate the electric weight of losing, and can be as required, startup is lost the electric energy tariff program and is calculated the actual electric weight amount of money of losing electric weight, or calculate the actual electric weight amount of money of losing electric weight by multiple rate mode, draw by SDA and SCL, link to each other with the corresponding end of data recording circuit (10).And by the pulse output end mouth, for remote meter reading and calibration calibrating provide the computational data of losing electric weight.
In accompanying drawing 9, impulse output circuit can adopt P317 to isolate the optocoupler formation, and according to pulsed frequency and the pulse/electric weight constant set, the meritorious electric weight that will lose is by PM1 and PM2 output, and the capacity of idle power that will lose is by QM1 and QM2 output.
In accompanying drawing 10, clock circuit (9) can adopt the PCF8583 clock chip to constitute, and its output terminal SDA, SCL and INT pass through I
2The C bus is connected to respectively that all need the corresponding end of the circuit of clock signal in central processing unit (5) and the intelligent network electric power meter misoperation instrument for measuring and recording.
In accompanying drawing 11, data recording circuit (10) can adopt the 24LC256E2PROM storer, by SDA, SCL and I
2The C bus connects, receive under-voltage operation, voltage-lose operation, the shunting (electricity consumption before the table) of also preserving intelligent amplitude phase fault decision circuitry (6) and providing, and the operation of voltage negative phase sequence, the operation of electric current misphase, current transformer are once or fault data such as the anti-phase operation of secondary; Receive and preserve current transformer that intelligent current transformer open circuit short trouble decision circuitry (7) provides once or secondary coil damages and fault datas such as current transformer open circuit and short circuit; Receive and preserve lose that electric quantity metering module (8) provides lose the electric weight computational data and the actual electric weight amount of money of losing electric weight; Operational parameter datas such as the line voltage grade of reception and preservation electric power meter, metering method, current transformer transformer ratio, the accuracy of measuring, data recording circuit (10) also has cryptoguard and power down data hold function.
In accompanying drawing 12, status display circuit (11) can adopt the MCG12232A5-1 graphic lcd to constitute, and includes two SED1520 controllers, links to each other with central processing unit (5) by data bus, and under the control of central processing unit (5), passes through I
2The C bus is delivered to the SED1520 controller with the clock signal of clock circuit (9) and the data of data recording circuit (10), drives LCD, shows related data.
In accompanying drawing 13, network communications circuits (12) can adopt MAX232 and peripheral circuit thereof to constitute the RS232 interface; Adopt MAX1480 and peripheral circuit thereof to constitute the RS485 interface, their input end links to each other with the corresponding end of central processing unit (5) respectively, under the control of central processing unit (5), passes through I
2The C bus is delivered to the external interface TOUT of RS232 interface circuit with the data of the clock signal of clock circuit (9) and data recording circuit (10) and is delivered to the external interface A and the B of RS485 interface circuit, communication protocol according to the rules, carry out connected network communication with host computer, and can accept the various data messages that pass under the host computer by the external interface RIN of RS232 interface circuit and the external interface A and the B of RS485 interface circuit.
In accompanying drawing 14, power circuit (13) can adopt the power transformer that is no less than more than 1, be no less than the circuit of three-terminal voltage-stabilizing integrated 7809 more than 1, and the circuit of three-terminal voltage-stabilizing integrated 7805 that is no less than more than 1 constitutes.Power transformer can independence or parallel operation, behind rectifying and wave-filtering, by circuit of three-terminal voltage-stabilizing integrated 7809 output 9V DC voltage, draws through BAT+, for the charging of the backup battery in the power down protection circuit (14) use; By circuit of three-terminal voltage-stabilizing integrated 7805 output 5V DC voltage, draw through VCC, intelligent network electric power meter misoperation instrument for measuring and recording working power is provided; By the power cut signal of resistance decompression network output, draw through ADCBAT.
In accompanying drawing 15; power down protection circuit (14) can adopt above rechargeable battery and 1 SRS-09VCD-SL relay of being no less than 1 to constitute; the power cut signal ADCBAT that power circuit (13) provides is after central processing unit (5) analyzing and processing; send power supply switching command POWER-ON; when the external power source dead electricity; switching command pilot relay SRS-09V-SL automatically switches to back-up source with intelligent network electric power meter misoperation instrument for measuring and recording working power, for intelligent network electric power meter misoperation instrument for measuring and recording provides the operate as normal power supply.
Claims (12)
1. intelligent network electric power meter misoperation instrument for measuring and recording, it is by voltage magnitude phase sampling circuit (1), current amplitude phase sampling circuit (2), current transformer open circuit short-circuit signal testing circuit (3), current transformer open circuit short-circuit signal translation circuit (4), central processing unit (5), intelligence amplitude phase fault decision circuitry (6), intelligence current transformer open circuit short trouble decision circuitry (7), lose electric quantity metering module (8), clock circuit (9), data recording circuit (10), status display circuit (11), network communications circuits (12), power circuit (13), power down protection circuit compositions such as (14), it is characterized in that intelligent amplitude phase fault decision circuitry (6) and voltage magnitude phase sampling circuit (1), current amplitude phase sampling circuit (2), central processing unit (5) links to each other; Current transformer open circuit short-circuit signal translation circuit (4) links to each other with current transformer open circuit short-circuit signal testing circuit (3); Intelligence current transformer open circuit short trouble decision circuitry (7) links to each other with current transformer open circuit short-circuit signal testing circuit (3), current transformer open circuit short-circuit signal translation circuit (4), central processing unit (5); Losing electric quantity metering module (8) links to each other with intelligent amplitude phase fault decision circuitry (6), intelligent current transformer open circuit short trouble decision circuitry (7), clock circuit (9), central processing unit (5); Data recording circuit (10) and intelligent amplitude phase fault decision circuitry (6), intelligent current transformer open circuit short trouble decision circuitry (7), lose electric quantity metering module (8), clock circuit (9), central processing unit (5) and link to each other; Status display circuit (11) links to each other with central processing unit (5), clock circuit (9), data recording circuit (10); Network communications circuits (12) links to each other with central processing unit (5), data recording circuit (10); Power down protection circuit (14) links to each other with central processing unit (5), power circuit (13).
2. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1, it is characterized in that, voltage magnitude phase sampling circuit (1) is used for the amplitude of line voltage and the phase place of line voltage are detected, voltage magnitude phase sampling circuit (1) is weak electric signal by voltage transformer (VT) with the signal transformation of electrical network three-phase voltage forceful electric power, and weak electric signal amplified, Filtering Processing, and the voltage magnitude signal after will handling and phase signal are defeated by intelligent amplitude phase fault decision circuitry (6), current amplitude phase sampling circuit (2) is used for the amplitude of power network current and the phase place of power network current are detected, current amplitude phase sampling circuit (2) is weak electric signal by current transformer with the signal transformation of electrical network three-phase current forceful electric power, and weak electric signal carried out the I-V conversion, amplify, Filtering Processing, and the current amplitude signal after will handling and phase signal are defeated by intelligent amplitude phase fault decision circuitry (6), current transformer open circuit short-circuit signal testing circuit (3) is used for short circuit of electric power meter current transformer or open fault are detected, current transformer open circuit short-circuit signal testing circuit (3) applies high-frequency excitation signal respectively to each phase current mutual inductor, and the feedback signal that high-frequency excitation signal forms in the current transformer loop is defeated by current transformer open circuit short-circuit signal translation circuit (4); After current transformer open circuit short-circuit signal testing circuit (3) carries out waveform transformation and shaping with high-frequency excitation signal, be defeated by intelligent current transformer open circuit short trouble decision circuitry (7) as reference signal.
3. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1, it is characterized in that, central processing unit (5) includes A/D converter, digital filter, program storage, jointly voltage signal, current signal and open circuit short-circuit signal are carried out analyzing and processing, and other interlock circuit of intelligent network electric power meter misoperation instrument for measuring and recording is implemented control.
4. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1, it is characterized in that, intelligence amplitude phase fault decision circuitry (6) is in voltage magnitude phase sampling circuit (1), current amplitude phase sampling circuit (2), under the acting in conjunction of central processing unit (5), voltage magnitude and phase signal to voltage magnitude phase sampling circuit (1), and the current amplitude of current amplitude phase sampling circuit (2) and phase signal adopt vector calculus and Fourier transform to handle, analyze and judge whether under-voltage operation of electric power meter, voltage-lose operation whether, whether shunt (electricity consumption before the table), whether the voltage negative phase sequence moves, whether the electric current misphase moves, current transformer once or the anti-phase operation of secondary, and the kind of fault carried out Classification and Identification by separate and type, and will analyze and judged result is defeated by respectively and is lost electric quantity metering module (8) and data recording circuit (10)
5. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1, it is characterized in that, intelligence current transformer open circuit short trouble decision circuitry (7) is at current transformer open circuit short-circuit signal testing circuit (3), current transformer open circuit short-circuit signal translation circuit (4), under the acting in conjunction of central processing unit (5), the motivational feedback signal that current transformer open circuit short-circuit signal translation circuit (4) is provided adopts adaptive algorithm, short circuit of intellectual analysis current transformer or open fault characteristic signal, in the intelligent decision electric power meter current transformer once or secondary coil whether damage, whether secondary circuit opens a way or short circuit, and the kind of fault carried out Classification and Identification by separate and type, and will analyze and judged result is exported to respectively and lost electric quantity metering module (8) and data recording circuit (10).
6. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1, it is characterized in that, lose electric quantity metering module (8) when electric power meter breaks down, can calculate meritorious electric weight and the capacity of idle power lost, lose electric quantity metering module (8) and be subjected to central processing unit (5), intelligence amplitude phase fault decision circuitry (6), the control of intelligence current transformer open circuit short trouble decision circuitry (7), when electric power meter breaks down, lose electric quantity metering module (8) according to the kind of fault-signal and separate, to the electric current and voltage amplitude signal, the electric current and voltage phase signal carries out the amplitude reduction, phase transition, and the clock data that provides according to clock circuit (9), calculate the electric weight of losing and export to data recording circuit (10), by the pulse output end mouth, according to pulsed frequency and the pulse/electric weight constant set, for the calibrating of remote meter reading and calibration provides the computational data of losing electric weight, lose and also comprise in the electric quantity metering module (8) and lose the electric energy tariff program, according to given rate, lose the actual electric weight amount of money of electric weight when calculating the electric energy metrical fault.
7. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1; it is characterized in that; data recording circuit (10) is in central processing unit (5); intelligence amplitude phase fault decision circuitry (6); intelligence current transformer open circuit short trouble decision circuitry (7); lose electric quantity metering module (8); under the acting in conjunction of clock circuit (9); fault zero-time to electric power meter; concluding time; failure mode; fault takes place separate; the electric weight that accumulative total is lost during fault carries out record; wherein; the data of data recording circuit (10) all have password and power-down protection, include the fault zero-time in every recorded content at least; concluding time; failure mode; fault takes place separate; accumulative total is lost data such as electric weight during fault.Also include multiple operational factor record in the data recording circuit (10), the related data of data recording circuit (10) is defeated by status display circuit (11), network communications circuits (12).
8. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1, it is characterized in that, status display circuit (11), contain LCD and other sound, optical indicator, status display circuit (11) is under the acting in conjunction of central processing unit (5), clock circuit (9), data recording circuit (10), can show data such as current dynamic time, failure logging, operational factor, and can the running status of intelligent network electric power meter misoperation instrument for measuring and recording be shown.
9. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1, it is characterized in that, the output interface of network communications circuits (12) includes RS232 interface, RS485 interface and infrared interface at least, networking mode can be multiple networking modes such as power carrier mode, cable transmission mode, optical cable transmission mode, direct and host computer networking; Networking mode also can be by other communication system, indirect and host computer is networked, form the connected network communication network, network communications circuits (12) in time transmits fault data jointly with central processing unit (5), data recording circuit (10) to host computer, and can receive teletype command under the host computer, revise operational factor and setting parameter in the data recording circuit (10), and clock circuit (9) is carried out the clock check and correction by communication network.
10. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 1; it is characterized in that; power circuit (13) provides working power for intelligent network electric energy metering misoperation instrument for measuring and recording; wherein; power circuit (13) also contains power transformer; parts such as filter regulator circuit; power down protection circuit (14) is in central processing unit (5); under the acting in conjunction of power circuit (13); when intelligent network electric power meter misoperation instrument for measuring and recording system operate outside power supply dead electricity, start back-up source, for intelligent network electric power meter misoperation instrument for measuring and recording provides the operate as normal power supply.
11. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 2, it is characterized in that, voltage magnitude phase sampling circuit (1) can adopt the voltage transformer (VT) more than at least 2 and the operational amplifier that is no less than more than 1 constitutes, they export to intelligent amplitude phase fault decision circuitry (6) after the electrical network three-phase voltage signal is carried out processing such as conversion, filtering and amplification; Current amplitude phase sampling circuit (2) can adopt the current transformer more than at least 2 and the operational amplifier that is no less than more than 1 constitutes, they export to intelligent amplitude phase fault decision circuitry (6) after the electrical network three-phase current signal is carried out processing such as conversion, filtering and amplification; Current transformer open circuit short-circuit signal testing circuit (3) can adopt the operational amplifier and the pickup coil more than at least 2 that are no less than more than 1 to constitute, current transformer open circuit short-circuit signal testing circuit (3) produces high-frequency excitation signal and reference signal, and reference signal is exported to central processing unit (5); High-frequency excitation signal applies pumping signal by the coupled pair current transformer, and pickup coil extracts the motivational feedback signal of current transformer, and exports to current transformer open circuit short-circuit signal translation circuit (4); Current transformer open circuit short-circuit signal translation circuit (4) can adopt and be no less than 1 above operational amplifier and associated components formation, under the control of central processing unit (5), automatically the running environment according to electric power meter changes, finish that motivational feedback signal to current transformer carries out that automatic gain amplifies, behind the filter shape, export to intelligent current transformer open circuit short trouble decision circuitry (7).
12. intelligent network electric power meter misoperation instrument for measuring and recording according to claim 3, it is characterized in that, central processing unit (5) can adopt one chip microcomputer and peripheral circuit thereof to constitute, include A/D converter, digital filter, program storage, by its input and output terminal, functional unit to intelligent network electric power meter misoperation instrument for measuring and recording is controlled, and receives the Keyboard Control instruction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 02232085 CN2562195Y (en) | 2002-04-22 | 2002-04-22 | Anomalous running measuring and recording instrument for intellectual network kilowatt meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 02232085 CN2562195Y (en) | 2002-04-22 | 2002-04-22 | Anomalous running measuring and recording instrument for intellectual network kilowatt meter |
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| CN2562195Y true CN2562195Y (en) | 2003-07-23 |
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| CN 02232085 Expired - Fee Related CN2562195Y (en) | 2002-04-22 | 2002-04-22 | Anomalous running measuring and recording instrument for intellectual network kilowatt meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101984358A (en) * | 2010-03-17 | 2011-03-09 | 浙江清华长三角研究院 | Indirect measurement method of building electric consumption |
| CN102175951A (en) * | 2011-01-18 | 2011-09-07 | 广州思泰信息技术有限公司 | Distribution network fault detection system |
| CN102540134A (en) * | 2011-12-30 | 2012-07-04 | 李景禄 | Intelligent metering and monitoring system |
| CN102929178A (en) * | 2012-11-10 | 2013-02-13 | 大连东方电器制造有限公司 | Fault recording and analyzing device |
| CN104868453A (en) * | 2015-04-15 | 2015-08-26 | 国家电网公司 | Current transformer protection device with remote short message alarming function |
| CN105572518A (en) * | 2016-02-26 | 2016-05-11 | 国网山东省电力公司蓬莱市供电公司 | Power detection device and method thereof |
| CN107748283A (en) * | 2017-11-14 | 2018-03-02 | 贵州电网有限责任公司 | A kind of micro energy lose electric energy meter metered voltage current monitoring alarm device and its monitoring method |
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| CN109188338A (en) * | 2018-09-05 | 2019-01-11 | 国网山东省电力公司潍坊供电公司 | A kind of electric energy collect and acquisition failure protecting device |
| CN110398710A (en) * | 2019-07-30 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of electric energy gauging method and system based on error self diagnosis |
| CN110716168A (en) * | 2019-11-18 | 2020-01-21 | 国网河北省电力有限公司电力科学研究院 | Method for detecting performance of traveling wave distance measuring device |
| CN111413660A (en) * | 2020-04-29 | 2020-07-14 | 云南电网有限责任公司电力科学研究院 | Method and system for testing error self-detection function of electric energy meter |
| CN111999600A (en) * | 2020-08-25 | 2020-11-27 | 武汉中元华电电力设备有限公司 | Intelligent distribution network terminal secondary current loop fault diagnosis positioning method and system |
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- 2002-04-22 CN CN 02232085 patent/CN2562195Y/en not_active Expired - Fee Related
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| CN101984358B (en) * | 2010-03-17 | 2013-06-19 | 浙江清华长三角研究院 | Indirect measurement method of building electric consumption |
| CN101984358A (en) * | 2010-03-17 | 2011-03-09 | 浙江清华长三角研究院 | Indirect measurement method of building electric consumption |
| CN102175951A (en) * | 2011-01-18 | 2011-09-07 | 广州思泰信息技术有限公司 | Distribution network fault detection system |
| CN102175951B (en) * | 2011-01-18 | 2014-11-26 | 广州思泰信息技术有限公司 | Distribution network fault detection system |
| CN102540134A (en) * | 2011-12-30 | 2012-07-04 | 李景禄 | Intelligent metering and monitoring system |
| CN102929178A (en) * | 2012-11-10 | 2013-02-13 | 大连东方电器制造有限公司 | Fault recording and analyzing device |
| CN104868453B (en) * | 2015-04-15 | 2018-03-02 | 国家电网公司 | Protector of current mutual inductor with remote short messages warning function |
| CN104868453A (en) * | 2015-04-15 | 2015-08-26 | 国家电网公司 | Current transformer protection device with remote short message alarming function |
| CN105572518A (en) * | 2016-02-26 | 2016-05-11 | 国网山东省电力公司蓬莱市供电公司 | Power detection device and method thereof |
| CN107748283A (en) * | 2017-11-14 | 2018-03-02 | 贵州电网有限责任公司 | A kind of micro energy lose electric energy meter metered voltage current monitoring alarm device and its monitoring method |
| CN108896952A (en) * | 2018-05-21 | 2018-11-27 | 华立科技股份有限公司 | Power grid exception simulated testing system and its test method |
| CN108896952B (en) * | 2018-05-21 | 2020-06-26 | 华立科技股份有限公司 | Power grid abnormity simulation test system and test method thereof |
| CN109188338A (en) * | 2018-09-05 | 2019-01-11 | 国网山东省电力公司潍坊供电公司 | A kind of electric energy collect and acquisition failure protecting device |
| CN110398710A (en) * | 2019-07-30 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of electric energy gauging method and system based on error self diagnosis |
| CN110398710B (en) * | 2019-07-30 | 2022-12-13 | 中国电力科学研究院有限公司 | Electric energy metering method and system based on error self-diagnosis |
| CN110716168A (en) * | 2019-11-18 | 2020-01-21 | 国网河北省电力有限公司电力科学研究院 | Method for detecting performance of traveling wave distance measuring device |
| CN111413660A (en) * | 2020-04-29 | 2020-07-14 | 云南电网有限责任公司电力科学研究院 | Method and system for testing error self-detection function of electric energy meter |
| CN111999600A (en) * | 2020-08-25 | 2020-11-27 | 武汉中元华电电力设备有限公司 | Intelligent distribution network terminal secondary current loop fault diagnosis positioning method and system |
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