CN216350869U - Single-phase power consumption state intelligent analyzer - Google Patents
Single-phase power consumption state intelligent analyzer Download PDFInfo
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- CN216350869U CN216350869U CN202122784147.2U CN202122784147U CN216350869U CN 216350869 U CN216350869 U CN 216350869U CN 202122784147 U CN202122784147 U CN 202122784147U CN 216350869 U CN216350869 U CN 216350869U
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Abstract
The utility model relates to an intelligent analyzer for a single-phase power consumption state, which comprises an analyzer body, a voltage test wire, a live wire current measuring clamp type current transformer QBL, a zero line current measuring clamp type current transformer QBN, a pulse collector of a detected electric energy meter, a standard pulse output module and an RS485 meter reading wire, wherein the voltage test wire is connected with the analyzer body; the input end of the analyzer main body is respectively connected with a pulse collector of the electric energy meter to be detected, a voltage test wire, a live wire current measuring clamp type current transformer QBL and a zero line current measuring clamp type current transformer QBN; the output end of the analyzer main body is connected with the standard pulse output module; the analyzer main body is electrically connected with an RS485 meter reading line. The utility model has reasonable design, compact structure and convenient use.
Description
Technical Field
The utility model belongs to the technical field of testing, and relates to an intelligent analyzer for a single-phase power utilization state.
Background
The electricity stealing is not only a widely existing phenomenon, but also an illegal action for preventing the electricity stealing
Various management means and technical means are adopted by electric enterprises, although some electricity stealing behaviors are prevented to a certain extent, as electricity utilization customers are numerous, power grids of power stations are dense, and the most direct money earning effect is formed by electricity stealing, an electricity thief wins up the brain juice and tries to try to steal electricity, and great difficulty is brought to electricity stealing prevention work. Therefore, it is necessary to design an intelligent inspection and analysis device which is convenient to operate, can quickly inspect the power utilization state of a user and can accurately judge the power utilization abnormal type.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that an intelligent analyzer for single-phase power utilization state is provided, which can accurately find different types of power utilization abnormity, electric energy meter measurement fault abnormity and non-independent zero line abnormity; prompting the inconsistent step value and the inconsistent step price, and prompting the inconsistent charge rate value; calibrating the clock of the electric energy meter, calibrating errors of the electric energy meter, and detecting the metering direction of the electric energy meter; the method is suitable for on-site on-line inspection of the power utilization state of single-phase users.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
a single-phase power consumption state intelligent analyzer comprises an inspection tester main body, a voltage test wire and a live wire
The device comprises a current measuring clamp type current transformer QBL, a zero line current measuring clamp type current transformer QBN, a pulse collector of the electric energy meter to be detected, a standard pulse output module and an RS485 meter reading line;
the input end of the analyzer body is respectively connected with the pulse collector, the voltage test wire and the live wire of the electric energy meter to be detected
A current measuring clamp type current transformer QBL and a zero line current measuring clamp type current transformer QBN;
the output end of the analyzer main body is connected with the standard pulse output module;
the analyzer main body is electrically connected with an RS485 meter reading line.
As a further improvement of the above technical solution:
the analyzer body comprises an ARM microprocessor, an SDRAM module, a NORFLASH module,
The device comprises a NANDFLASH module, an A/D converter, a Bluetooth module, a keyboard, an LCD display screen with a capacitive touch screen, a USB interface, an impedance conversion module, an RS485 module, an electric energy meter pulse input module and a standard pulse output module;
the ARM microprocessor is electrically connected with the SDRAM module, the NORFLASH module,
A NANDFLASH module; the ARM microprocessor is electrically connected with the Bluetooth module and the keyboard; the ARM microprocessor is respectively connected with the pins on the inspection instrument panel through a USB channel of the USB interface, an MC channel of the electric energy meter pulse input module, an M0 channel of the standard pulse output module and an RS485 channel of the RS485 module so as to be electrically connected with the corresponding external circuit.
The ARM microprocessor is connected with an LCD display screen through an LCD control port;
the output end of the A/D converter is connected with the ARM microprocessor, the input end of the A/D converter is connected with the output end of the I/V conversion module, and the input end of the I/V conversion module is respectively connected with a live wire current measuring clamp type current transformer QBL and a zero line current measuring clamp type current transformer QBN;
the A/D converter is connected with the output end of the impedance transformation module; the impedance transformation module is connected with a secondary coil of the voltage transformer T, and a primary coil of the impedance transformation module is externally connected through the panel of the inspection instrument.
The ARM microprocessor adopts a model of LPC1788FDB 208; a serial port 1 of the ARM microprocessor is connected with a Bluetooth module, and a serial port 2 of the ARM microprocessor is connected with an RS485 interface;
the A/D converter selects an analog-to-digital converter AD7606BSTZ with 16 bits and 250K conversion rate;
live wire current of a user electricity utilization site is input by a live wire current measuring clamp type current transformer QBL, zero line current is input by a zero line current measuring clamp type current transformer QBN, and the live wire current and the zero line current are respectively connected to analog input channels 3 and 4 of AD7606 through I/V converters;
the voltage loop of the user power utilization field is converted into a voltage reduction signal through a voltage transformer T1, the voltage reduction signal passes through an analog input channel 1 of an impedance converter access A/D converter, an ARM microprocessor reads a digital signal converted by the A/D converter, the electric parameters and the accumulated electric energy of the user power utilization field are calculated, and the Bluetooth module is externally connected with a mobile phone APP on an LCD display screen according to the setting requirement so as to read data.
Live wire current measurement clamp-on current transformer QBL and zero line current measurement clamp-on current transformer
QBN adopts a small sharp-nose clamp structure, and an iron core adopts 1J85 permalloy.
The electric energy meter pulse input module is an electric energy meter electric pulse collector, collects the electric energy meter active pulse count, and calculates the error of the electric energy meter with the standard electric energy pulse of the analyzer.
The intelligent analyzer for the single-phase power utilization state measures the live wire current, the zero line current, the voltage and the power of a single-phase user on site, compares the live wire current, the zero line current, the voltage and the power with corresponding data measured by the electric energy meter, searches for abnormal power utilization conditions, tests the metering error of the electric energy meter and the time for checking the electric energy meter, checks the running power price scheme of the electric energy meter, and realizes the comprehensive checking and analysis of the power utilization state of the single-phase user. The utility model has the advantages of reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, capital saving and compact structure; the utility model has the advantages of 0.1 level of accuracy, flexible and convenient use, stable and reliable performance, small volume, light weight, convenient carrying, friendly interface and convenient operation, can accurately and quickly check out power utilization abnormity and metering faults, and can upload detected data to a cloud platform or other software systems.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is an electrical schematic block diagram of the present invention;
FIG. 3 is a functional interface diagram of the present invention;
FIG. 4 is a schematic diagram of the operation of the electric energy meter of the present invention;
FIG. 5 is a parameter set interface diagram according to the present invention;
FIG. 6 is a diagram of an error checking interface in accordance with the present invention;
FIG. 7 is a diagram of a meter inspection interface according to the present invention;
fig. 8 is an interface diagram of the electricity price scheme of the present invention.
Detailed Description
Referring to fig. 1-8, the intelligent analyzer for single-phase power consumption status of the present embodiment includes a current transformer with two clamps,
live line current and zero line current of power consumers are measured on site, and different types of electricity utilization abnormity, electric energy meter measurement fault abnormity and dependent zero line abnormity can be accurately found by combining meter reading data; prompting the inconsistent step value and the inconsistent step price, and prompting the inconsistent charge rate value; calibrating the clock of the electric energy meter, calibrating errors of the electric energy meter, and detecting the metering direction of the electric energy meter; the method is suitable for on-site on-line inspection of the power utilization state of single-phase users. The analyzer is convenient to use, small in size, light in weight, convenient to carry, convenient and quick to operate, safe and reliable to use, and suitable for field inspection and analysis of power utilization states of various single-phase users. The live wire current and the zero line current are measured simultaneously, the live wire current and the zero line current are compared with the live wire current and the zero line current measured by the electric energy meter in real time, the field measurement voltage and power are compared with the measured value of the electric energy meter, and the electricity utilization abnormity is analyzed and displayed in real time; the analysis data may be saved or uploaded. The clamp-on current transformer meter adopts a clamp-on structure of a small sharp nozzle, adopts a 1J85 permalloy iron core, has high magnetic permeability and high linearity, is additionally provided with a shielding case with strong anti-interference capability, and meets the requirement of 0.1 level accuracy grade within the current range of 0.1A-100A. The step value and the step electricity price of the running of the electric energy meter can be checked, and compared with the standard step value and the step electricity price, the inconsistent step value and the step electricity price are prompted.
The accuracy grade of the field test meets 0.1 grade, the error test shows three error values and an average error,
automatically adjusting errors according to the accuracy grade of the detected electric energy meter; and displaying the calculated pulse and the measured pulse in the error test process.
the input end of the analyzer body 1 is respectively connected with a pulse collector 7 of the electric energy meter to be detected, a voltage test wire 2, a live wire current measuring clamp type current transformer QBL3 and a zero line current measuring clamp type current transformer QBN 4;
the output end of the analyzer body 1 is connected with a standard pulse output module 6; the analyzer body 1 is connected with an RS485 meter reading line 5 in a bidirectional mode.
Example 2, as shown in FIG. 2, the analyzer body, which is the core part of the analyzer, includes 32 bits
High-speed ARM microprocessor, SDRAM module, NORFLASH module and NANDFLASH
The device comprises a module, a 16-bit A/D converter, a Bluetooth module, a keyboard, an LCD display screen and a capacitive touch screen of 5-inch color liquid crystal, a standard USB interface, an impedance conversion module, an RS485 module, an electric energy meter pulse input module and a standard pulse output module of an electric energy meter; the software adopts a ucoSIII operating system, a uCGUI graph and a FatFs file system;
the ARM microprocessor is electrically connected with the SDRAM module, the NORFLASH module,
A NANDFLASH module; the ARM microprocessor is electrically connected with the Bluetooth module and the keyboard; the ARM microprocessor is respectively connected with the inspection instrument panel through a USB channel of the USB interface, an MC channel of the electric energy meter pulse input module, an M0 channel of the standard pulse output module and an RS485 channel of the RS485 module;
the ARM microprocessor is connected with an LCD display screen through an LCD control port, and the LCD display screen is provided with a capacitive touch screen;
the output end of the 16-bit A/D converter is connected with the ARM microprocessor, and the input end is connected with the input end of the I/V conversion module
At the output end, the input end of the I/V conversion module is respectively connected with a live wire current measuring clamp type current transformer QBL3 and a zero line current measuring clamp type current transformer QBN 4;
the 16-bit A/D converter is connected with the output end of the impedance transformation module; the impedance transformation module is connected with a secondary coil of a voltage transformer T2, and a primary coil of the impedance transformation module is externally connected through an analyzer panel;
referring to FIG. 2, an ARM microprocessor uses a low power consumption programmable micro model LPC1788FDB208
Built-in LCD controller of processor, 96K bytes RAM, 512K bytes program memory, I2C interface,
SPI interface, UART interface.
The serial port 1 of the microprocessor is connected with the Bluetooth module, the serial port 2 is connected with the RS485 interface, and the LCD control port
Connecting a 5-inch true color LCD display screen with a capacitive touch screen; the A/D converter is a 16-bit 250K conversion rate analog-to-digital converter AD7606BSTZ, live wire current of a user power utilization site is input by a clamp type current transformer QBL, zero line current is input by the clamp type current transformer QBN, and the current passes through an I/V converter
The converter inserts AD 7606's analog input passageway 3 and 4, and user's power consumption field voltage return circuit passes through high accuracy voltage transformer T1 and transforms into the voltage small signal, inserts AD 7606's analog input passageway 1 through impedance converter, and microprocessor reads the digital signal that AD7606 converted, calculates user's power consumption field's electrical parameter and accumulative power, shows at the LCD as required, also can read through bluetooth module by cell-phone APP.
The current transformer for measuring live wire current and zero line current is small
The smart sharp mouth clamp structure, the current measurement range of 0.1A-100A, meets the field measurement requirement. The iron core of the clamp-type current transformer for measuring the current of the live wire and the zero wire adopts 1J85 permalloy, the magnetic permeability is high, the linearity is high, the anti-interference capability of an external shielding case is strong, and the requirement of 0.1 level accuracy grade is met within the current range of 0.1A-100A.
Example 3, referring to fig. 3, the functions of the analyzer are displayed in the form of icons, clicking different icons,
the inspection scope performs the corresponding function.
The voltage loop adopts a 0.02-grade 220V/3V voltage transformer, and the A/D converter is selected
AD7606BSTZ, 16-bit conversion precision, 250K conversion rate, and the analog-to-digital conversion circuit is physically isolated from other circuits, so that signal interference is reduced.
And RS485 reading the meter, reading the recorded data of the electric energy meter, and finding the abnormal state of the electric energy meter in the actual operation process through analysis and comparison.
The electric energy pulse collector of the electric energy meter collects the active pulse count of the electric energy meter and the standard electricity of the inspection instrument
And calculating the error of the electric energy meter by the energy pulse.
the method comprises the following steps: on-site wiring, a firing line current measuring clamp QBL clamps the firing line L and the zero line of the electric energy meter
A current measuring clamp QBN clamps an incoming line zero line N of the electric energy meter; the red line of the voltage test line is connected with the phase line L of the electric energy meter,
the black line of the voltage test line is connected with a zero line N of the electric energy meter; the RS485 meter reading line is connected with the 485 terminal of the electric energy meter,
the pulse collector of the detected meter is clamped on the active pulse lamp of the electric energy meter.
Step two: the field tester turns on the analyzer power switch, the analyzer displays the interface of fig. 3, etc
The person to be tested selects a function.
Step three: the field tester clicks the "parameter entry" icon on the analyzer, which displays the graph of FIG. 5
And inputting corresponding contents through an interface, wherein the Chinese character input method is the same as the mobile phone input method, the use is convenient, and the user clicks 'exit' after completing the input, and returns to the functional interface.
Step four: the field tester clicks the "error test" icon of the analyzer, which displays fig. 6
The interface is a surface of a wafer,
the method comprises the steps of measuring real-time electric parameters, continuously checking the electric energy meter, displaying 3 checking errors in a circulating mode, dynamically displaying average errors and trimming errors, wherein the number of checking turns is a set error testing period, the calculated pulse is a theoretical calculation value of zero errors of the electric energy meter, and the actually measured pulse is the number of actually accumulated standard electric energy pulses. And the check result can be saved, and the exit box is clicked to return to the function interface.
Step five: the field tester clicks the "Meter check" icon of the analyzer, which displays FIG. 7
The interface and the test parameter column display live wire current ICL, zero line current IcN, voltage UcL and active power Pc of field test, and the analyzer reads live wire current IbL and zero line current in the electric energy meter through RS485
IbN, voltage UbL, active power Pb, electric energy meter uncapping times and recent uncapping time, and displaying the data at corresponding positions of meter reading parameters, wherein ICl, IcN, IbL and IbN are similar parameters, UcL and UbL are similar parameters, and Pc and Pb are similar parameters; the analyzer automatically compares the test parameters with the same parameters in the meter reading parameters, and if the measurement error of each parameter is 2 percent, the comparison deviation of the same parameters is less than 4 percent, the electricity utilization state is considered normal, the deviation is more than 4 percent, the electricity utilization state is considered abnormal, and the possibility of electricity stealing exists; and displaying the analysis result in the data analysis column to prompt the existing problems. Clicking the data storage box, storing the power-checking analysis data, clicking the exit box, and returning to the functional interface.
Step six: the field tester clicks the "electricity price check" icon of the analyzer, which displays the graph of fig. 8
The interface has two functions of rate electricity price check and step electricity price check, and the electricity price scheme is divided into a low-voltage resident electricity price scheme and an industrial and commercial electricity price scheme. And the analyzer imports a standard electricity price scheme through a USB interface, compares the standard electricity price scheme with the electricity price scheme operated by the electric energy meter item by item, and displays comparison result information on a prompt box when inconsistency is found. Clicking the data storage box, storing the power-checking analysis data, clicking the exit box, and returning to the functional interface.
Step seven: the field tester clicks other function icons of the analyzer to implement corresponding functions
Tests such as: harmonic measurement, waveform display, phasor diagram, automatic meter reading, and the like.
The present invention has been described in sufficient detail for clarity of disclosure and is not admitted to be prior art
An example is.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for explaining the present invention
Limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; it is obvious as a person skilled in the art to combine several aspects of the utility model. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a single-phase power consumption state intelligent analysis appearance which characterized in that: the device comprises an analyzer body, a voltage test wire, a live wire current measuring clamp type current transformer QBL, a zero line current measuring clamp type current transformer QBN, a pulse collector of the electric energy meter to be detected, a standard pulse output module and an RS485 meter reading wire;
the input end of the analyzer main body is respectively connected with a pulse collector of the electric energy meter to be detected, a voltage test wire, a live wire current measuring clamp type current transformer QBL and a zero line current measuring clamp type current transformer QBN;
the output end of the analyzer main body is connected with the standard pulse output module;
the analyzer main body is electrically connected with an RS485 meter reading line.
2. The single-phase power consumption state intelligent analyzer of claim 1, characterized in that: the analyzer body comprises an ARM microprocessor, an SDRAM module, a NORFLASH module, a NANDFLASH module, an A/D converter, a Bluetooth module, a keyboard, an LCD display screen with a capacitive touch screen, a USB interface, an impedance transformation module, an RS485 module, an electric energy meter pulse input module and a standard pulse output module;
the ARM microprocessor is electrically connected with the SDRAM module, the NORFLASH module and the NANDFLASH module through a bus; the ARM microprocessor is electrically connected with the Bluetooth module and the keyboard; the ARM microprocessor is respectively connected with the pins on the inspection instrument panel through a USB channel of the USB interface, an MC channel of the electric energy meter pulse input module, an M0 channel of the standard pulse output module and an RS485 channel of the RS485 module so as to be electrically connected with the corresponding external circuit.
3. The single-phase power consumption state intelligent analyzer of claim 2, characterized in that: the ARM microprocessor is connected with an LCD display screen through an LCD control port;
the output end of the A/D converter is connected with the ARM microprocessor, the input end of the A/D converter is connected with the output end of the I/V conversion module, and the input end of the I/V conversion module is respectively connected with a live wire current measuring clamp type current transformer QBL and a zero line current measuring clamp type current transformer QBN;
the A/D converter is connected with the output end of the impedance transformation module; the impedance transformation module is connected with a secondary coil of the voltage transformer T, and a primary coil of the impedance transformation module is externally connected through the panel of the inspection instrument.
4. The single-phase power consumption state intelligent analyzer of claim 2, characterized in that: the ARM microprocessor adopts a model of LPC1788FDB 208; a serial port 1 of the ARM microprocessor is connected with a Bluetooth module, and a serial port 2 of the ARM microprocessor is connected with an RS485 interface;
the A/D converter selects an analog-to-digital converter AD7606BSTZ with 16 bits and 250K conversion rate;
live wire current of a user electricity utilization site is input by a live wire current measuring clamp type current transformer QBL, zero line current is input by a zero line current measuring clamp type current transformer QBN, and the live wire circuit and the zero line circuit are respectively connected to analog input channels 3 and 4 of AD7606 through I/V converters;
the voltage loop of the user power utilization field is converted into a voltage reduction signal through a voltage transformer T1, the voltage reduction signal passes through an analog input channel 1 of an impedance converter access A/D converter, an ARM microprocessor reads a digital signal converted by the A/D converter, the electric parameters and the accumulated electric energy of the user power utilization field are calculated, the electric parameters and the accumulated electric energy are displayed on an LCD display screen according to setting requirements, and a Bluetooth module is externally connected with a mobile phone APP to read data.
5. The single-phase power consumption state intelligent analyzer of claim 3, characterized in that: the live wire current measurement clamp type current transformer QBL and the zero line current measurement clamp type current transformer QBN adopt a small and exquisite sharp-nose clamp structure, and an iron core adopts 1J85 permalloy.
6. The single-phase power consumption state intelligent analyzer of claim 2, characterized in that: the electric energy meter pulse input module is an electric energy meter electric pulse collector, collects the electric energy meter active pulse count, and calculates the error of the electric energy meter with the standard electric energy pulse of the analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122784147.2U CN216350869U (en) | 2021-11-15 | 2021-11-15 | Single-phase power consumption state intelligent analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122784147.2U CN216350869U (en) | 2021-11-15 | 2021-11-15 | Single-phase power consumption state intelligent analyzer |
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| Publication Number | Publication Date |
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| CN216350869U true CN216350869U (en) | 2022-04-19 |
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| CN202122784147.2U Active CN216350869U (en) | 2021-11-15 | 2021-11-15 | Single-phase power consumption state intelligent analyzer |
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- 2021-11-15 CN CN202122784147.2U patent/CN216350869U/en active Active
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