CN210323193U - Intelligent electric energy remote metering system - Google Patents

Intelligent electric energy remote metering system Download PDF

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Publication number
CN210323193U
CN210323193U CN201920515565.1U CN201920515565U CN210323193U CN 210323193 U CN210323193 U CN 210323193U CN 201920515565 U CN201920515565 U CN 201920515565U CN 210323193 U CN210323193 U CN 210323193U
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resistor
electric energy
module
voltage
power line
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CN201920515565.1U
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Chinese (zh)
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杨胜锋
梁月华
李思忍
张学科
黄江平
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Abstract

The utility model discloses a long-range measurement system of intelligence electric energy, long-range measurement system of intelligence electric energy includes local measurement acquisition unit, concentrator, long-range wireless communication module and main website, local measurement acquisition unit is installed in the electric energy measurement point department that the user inserts the detection, local measurement acquisition unit of every electric energy measurement point department pass through power line carrier communication module with the concentrator is connected, and this concentrator carries out wireless communication with the main website through long-range wireless transfer module and is connected. The utility model discloses a measurement system can carry out quick sample to user line's electric energy, and quick safe completion electric current and the unbalanced phase adjustment of voltage and accurate measurement are handled to transmit the information result of measurement to the main website through power line carrier communication module, concentrator, long-range wireless communication module and carry out remote monitoring.

Description

Intelligent electric energy remote metering system
Technical Field
The utility model belongs to the technical field of the electric energy measurement, especially, relate to a long-range measurement system of intelligence electric energy.
Background
The electric energy metering usually adopts an electric energy meter to measure and record generated energy, supplied (mutually supplied) electric quantity, station power consumption, line loss electric quantity and user power consumption, so that the electric energy metering performed by the electric energy meter plays an important role in a huge electric power supply system, electric quantity settlement is performed between a power supply enterprise and a power utilization enterprise through an electric energy metering device, and the important thing is to ensure the accuracy and reliability of the electric energy metering. With the continuous development of power technology, people pay more and more attention to power metering, and the importance of accurately measuring consumed or generated electric energy and monitoring the quality of the electric energy is increased. Many current electric energy meters on the market still stay in the measurement of pure electric energy, though some intelligent electric energy meters on the market can measure multiple electric parameters, the wiring mode that current intelligent electric energy meter can be even complicated, the measurement of interference current, voltage signal, and the human-computer interaction performance of field application is relatively poor moreover, can not make the user effectively obtain required measurement information, and the function is comparatively single.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a long-range measurement system of intelligence electric energy, the utility model discloses a measurement system can carry out quick sample to user line's electric energy, and quick safe completion electric current and the unbalanced phase adjustment of voltage and accurate measurement are handled to transmit the information result of measurement to the main website through power line carrier communication module, concentrator, long-range wireless communication module and carry out remote monitoring. In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to the utility model discloses an aspect provides a long-range measurement system of intelligence electric energy, long-range measurement system of intelligence electric energy includes local measurement acquisition unit, concentrator, long-range wireless communication module and main website, local measurement acquisition unit is installed in the electric energy measurement point department that the user inserts the detection, local measurement acquisition unit of every electric energy measurement point department pass through power line carrier communication module with the concentrator is connected, and this concentrator carries out wireless communication through long-range wireless transmission module and main website and is connected.
The above scheme is preferred, local measurement collection unit includes voltage transformer, current transformer, voltage conversion circuit, current conversion circuit, electric energy metering module and data processing module, voltage transformer's input and current transformer's input respectively with electric energy metering point department connects, this voltage transformer's output pass through voltage conversion circuit with electric energy metering module's voltage input end is connected, this current transformer's output pass through current conversion circuit with electric energy metering module's current input end is connected, electric energy metering module's output is connected with data processing module's input, and this data processing module's output loops through power line carrier communication module, concentrator and long-range wireless transmission module and is connected with the main website.
Preferably, in the above scheme, a first relay switch is arranged between the output end of the voltage transformer and the input end of the voltage conversion circuit; and a second relay switch is arranged between the output end of the current transformer and the input end of the current conversion circuit.
Further preferably, the current conversion circuit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1, a capacitor C2, and a capacitor C3, and the voltage conversion circuit includes a resistor R8, a resistor R9, a variable resistor R10, a resistor R11, and a capacitor C4; the first output end of the current transformer is respectively connected with one end of a resistor R1, one end of a resistor R2 and one end of a resistor R4, the second output end of the current transformer is respectively connected with the other end of the resistor R1, one end of the resistor R3 and one end of the resistor R5, the other end of the resistor R4 is respectively connected with one end of a capacitor C1 and one end of a resistor R6, the other end of the resistor R5 is respectively connected with one end of a capacitor C2 and one end of a resistor R7, the other end of the resistor R6 is connected with a first voltage input end of the electric energy metering module, the other end of the resistor R7 is connected with a second voltage input end of the electric energy metering module, the output end of the voltage transformer is respectively connected with one end of a resistor R8 and one end of a resistor R9, the other end of the resistor R9 is respectively connected with one end of the resistor R11, one end of the capacitor C4 and the current input of the electric energy metering module through a variable resistor R10.
Further preferably, the voltage conversion circuit further includes an inductor L1 and an inductor L2, the first output terminal of the current transformer is connected to one end of the resistor R1, one end of the resistor R2 and one end of the resistor R4 through the inductor L1, and the second output terminal of the current transformer is connected to the other end of the resistor R1, one end of the resistor R3 and one end of the resistor R5 through the inductor L2.
Further preferably, in the above scheme, the remote wireless communication module is a GPRS remote wireless transmission module or a 4G wireless transmission module; the power line carrier communication module is a low-voltage power line narrowband carrier communication module or a low-voltage power line broadband power line carrier communication module.
In a further preferable mode of the above scheme, the low-voltage power line broadband power carrier communication module uses a power line carrier chip with an operating frequency of 8MHz to 10 MHz.
Further preferably in the above scheme, the electric energy metering module is an HLW8112 metering chip, and the data processing module is an STM32F407ZGT6 processor.
In a further preferred embodiment of the foregoing solution, the intelligent electric energy remote metering system further includes the data display unit and the alarm unit, and the data display unit and the alarm unit are respectively connected to the data processing module.
To sum up, because the utility model adopts the above technical scheme, the utility model discloses following technological effect has:
(1) the utility model can rapidly sample the electric energy of the subscriber line, rapidly and safely complete the phase unbalance adjustment of current and voltage and accurate measurement analysis processing; the utility model samples and meters the electric energy at each electric energy metering point, and transmits the metered information result to the main station through the power line carrier communication module, the concentrator and the remote wireless communication module for remote monitoring, thereby realizing the metering detection and real-time monitoring of the electric quantity distributed to each user,
(2) the utility model discloses a carrier communication's mode to possessed the advantage of wireless and these two kinds of communication methods of power line carrier simultaneously, signal transmission is stable, need not to carry out complicated wiring moreover, has reduced the complexity of equipment wiring mode, and the detection interference is less, and the human-computer interaction of site application is convenient moreover, has improved the reliability and the stability of remote metering.
Drawings
Fig. 1 is a schematic diagram of an intelligent electric energy remote metering system of the present invention;
fig. 2 is a schematic circuit diagram of a local metering and collecting unit of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
As shown in FIG. 1, according to an aspect of the present invention, an intelligent electric energy remote metering system, including local metering collection unit, concentrator, long-range wireless communication module and main station, local metering collection unit installs in the electric energy measurement point department that the user inserts the detection, local metering collection unit of every electric energy measurement point department pass through power line carrier communication module with the concentrator is connected, this concentrator carries out wireless communication through long-range wireless transmission module and main station and is connected, sets up local metering collection unit in every electric energy measurement point department and passes through power line carrier to the concentrator with the metering data, the concentrator passes through long-range wireless transmission module etc. and carries out the electric energy metering data among the teletransmission power supply line and reach the main station, it is faster to have the transmission through power line carrier communication module transmission electric energy data, transmission signal is stable, The effect of large transmission data volume; the local metering and collecting unit comprises a voltage transformer, a current transformer, a voltage conversion circuit, a current conversion circuit, an electric energy metering module and a data processing module, wherein the input end of the voltage transformer and the input end of the current transformer are respectively connected with the electric energy metering point, the output end of the voltage transformer is connected with the voltage input end of the electric energy metering module through the voltage conversion circuit, the output end of the current transformer is connected with the current input end of the electric energy metering module through the current conversion circuit, the output end of the electric energy metering module is connected with the input end of the data processing module, and the output end of the data processing module is connected with a master station sequentially through a power line carrier communication module, a concentrator and a remote wireless transmission module; the remote wireless communication module is a GPRS remote wireless transmission module or a 4G wireless transmission module; the power line carrier communication module is a low-voltage power line narrowband carrier communication module or a low-voltage power line broadband power line carrier communication module; the data processing module adopts an STM32F407ZGT6 processor, the low-voltage power line broadband power carrier communication module adopts a power line carrier chip with the working frequency of 8 MHz-10 MHz, the power line carrier chip with the working frequency of 8 MHz-10 MHz is used for processing and transmitting acquisition and measurement data, the power line carrier chip adopts a PL3105 carrier processing chip, and a direct sequence spread spectrum communication unit is embedded in the chip, so that the chip has great advantages in power line carrier communication, has the advantages of strong in-band co-channel interference resistance, high sensitivity, high safety and high transmission speed, and can also realize bidirectional, high-speed and stable transmission of data on a power line, and solve the key technical problem of low-voltage power line communication. In the utility model, the data processing module and the main station transmit the electric energy metering data through the power line carrier communication module and the remote wireless transmission module, the electric energy metering module sends the collected and processed data into the data processing module and analyzes and processes the metering data, the main station analyzes and processes the data by storing the transmitted metering data in real time, can carry out unified calculation, analysis and charging management on the metering data, the main station feeds back the data to the data processing module according to the data analysis result, sends an instruction to control the electric energy metering point accessed and detected by the user aiming at the abnormal condition, then alarms through the alarm unit and controls and adjusts the working operation state of the alarm unit, under the premise that the electric energy metering point accessed and detected by the user normally works, the goals of energy saving, consumption reduction and monitoring can be realized as much as possible, thereby realized that the main website carries out two-way communication to a plurality of concentrators, a plurality of local measurement collection unit, read the data of concentrator, gather parameters such as electric energy information, pocket watch time, period rate, thereby the main website can carry out remote management, electric quantity monitoring, equipment protection etc. to the user, when the electric energy that detects is too big automatic cutout power supply line, the load in the prevention power supply line is too big.
In the present invention, as shown in fig. 1, a first relay switch is disposed between the output terminal of the voltage transformer and the input terminal of the voltage conversion circuit; a second relay switch is arranged between the output end of the current transformer and the input end of the current conversion circuit; the first relay switch and the second relay switch are controlled by the data processing module; the voltage transformer and the current transformer respectively sample the voltage and the current on the subscriber line and send the sampled voltage and the current to the electric energy metering module, the electric energy metering module processes the result and sends the processed result to the data processing module to carry out protocol analysis, electric energy calculation, time interval, rate and other electric energy metering information to be accumulated and calculated, and the accumulated and calculated electric energy metering information is displayed through the data display unit, the data display unit is used for displaying the collected electric energy data and providing the electric energy data for the user to check, so that the electric energy information of the user can be obtained, the user can timely obtain the electric energy condition, and the difficulty of electric energy inquiry, electric charge rate inquiry, meter residual amount; the data processing module carries out analysis and processing and can carry out switching operation and operating condition protection to electric energy metering module through two relay switches, and the electric energy data that data processing module calculated and processed establish communication and upload electric energy information through power line carrier communication module and concentrator table, and the operation and maintenance personnel of main website can issue the order and carry out the power failure operation to the user, and the operation and maintenance personnel of main website still can look over the electric energy information that each concentrator transmitted.
In the present invention, as shown in fig. 1 and fig. 2, the current converting circuit includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1, a capacitor C2, and a capacitor C3, and the voltage converting circuit includes a resistor R8, a resistor R9, a variable resistor R10, a resistor R11, and a capacitor C4; the first output end of the current transformer is respectively connected with one end of a resistor R1, one end of a resistor R2 and one end of a resistor R4, the second output end of the current transformer is respectively connected with the other end of the resistor R1, one end of the resistor R3 and one end of the resistor R5, the other end of the resistor R4 is respectively connected with one end of a capacitor C1 and one end of a resistor R6, the other end of the resistor R5 is respectively connected with one end of a capacitor C2 and one end of a resistor R7, the other end of the resistor R6 is connected with a first voltage input end of the electric energy metering module, the other end of the resistor R7 is connected with a second voltage input end of the electric energy metering module, the output end of the voltage transformer is respectively connected with one end of a resistor R8 and one end of a resistor R9, the other end of the resistor R9 is respectively connected with one end of the resistor R11, one end of the capacitor C4 and the current input of the electric energy metering module through a variable resistor R10; each user is connected to the corresponding measuring detection point at the electric energy measuring point of the detection, and the voltage division of the sampling voltage can be changed by adjusting the resistance value of the variable resistor R10; the electric energy metering module adopts an HLW8112 metering chip to directly read related parameters such as voltage, current, power, phase and electric energy, the current transformer samples the current in a line, the sampled current outputs two paths of balanced differential voltage to a first pin (V1P) and a second pin (V1N) of an electric energy metering module U1 (an HLW8112 metering chip U1) through a current conversion circuit, sampling can be carried out by adopting differential signals, a balance resistor is connected in series at a phase voltage interface end corresponding to the HLW8112 metering chip U1, and a ceramic capacitor C1 and a capacitor C2 are connected to a reference ground plane to form a low-pass filter to filter out higher harmonic interference; the voltage transformer samples the voltage in the line, performs voltage division regulation, current limiting protection and filtering through the voltage conversion circuit, and sends the divided current to a fifth pin (V2P) of the electric energy metering module U1; the current conversion circuit of the electric energy metering point of each user collects information and analyzes various electric quantities such as current loop voltage, current, power, phase, power factor and the like of each user power supply line, the collected information and the analysis result are transmitted to a master station through a power line carrier communication module, a concentrator and a remote wireless communication module to be remotely metered, the electric quantities distributed to each user can be metered, detected and monitored in real time, and the electric energy used by the user in an autonomous timing mode is metered.
As another embodiment of the present invention, in the present invention, as shown in fig. 1 and fig. 2, the voltage conversion circuit further includes an inductor L1 and an inductor L2, the first output end of the voltage transformer is connected to one end of a resistor R1, one end of a resistor R2 and one end of a resistor R4 through an inductor L1, and the second output end of the voltage transformer is connected to the other end of a resistor R1, one end of a resistor R3 and one end of a resistor R5 through an inductor L2; the high frequency harmonic of the production in inductance L1 and the inductance L2 filtering absorption circuit prevents the influence of high frequency harmonic to the measurement data in the circuit, the utility model discloses thereby functions such as suppression instantaneous flow, overvoltage, higher harmonic have been possessed, advantages such as interference killing feature, high-pressure resistant impact, stable performance, longe-lived.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a long-range measurement system of intelligence electric energy which characterized in that: the intelligent electric energy remote metering system comprises a local metering and collecting unit, a concentrator, a remote wireless communication module and a master station, wherein the local metering and collecting unit is installed at an electric energy metering point where a user accesses and detects, the local metering and collecting unit at each electric energy metering point is connected with the concentrator through a power line carrier communication module, and the concentrator is in wireless communication connection with the master station through a remote wireless transmission module.
2. The intelligent remote electric energy metering system of claim 1, wherein: the local measurement acquisition unit comprises a voltage transformer, a current transformer, a voltage conversion circuit, a current conversion circuit, an electric energy measurement module and a data processing module, wherein the input end of the voltage transformer and the input end of the current transformer are respectively connected with the electric energy measurement point, the output end of the voltage transformer is connected with the voltage input end of the electric energy measurement module through the voltage conversion circuit, the output end of the current transformer is connected with the current input end of the electric energy measurement module through the current conversion circuit, the output end of the electric energy measurement module is connected with the input end of the data processing module, and the output end of the data processing module is connected with a main station through a power line carrier communication module, a concentrator and a remote wireless transmission module in sequence.
3. The intelligent remote electric energy metering system of claim 2, wherein: a first relay switch is arranged between the output end of the voltage transformer and the input end of the voltage conversion circuit; and a second relay switch is arranged between the output end of the current transformer and the input end of the current conversion circuit.
4. The intelligent remote electric energy metering system of claim 2 or 3, wherein: the current conversion circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1, a capacitor C2 and a capacitor C3, and the voltage conversion circuit comprises a resistor R8, a resistor R9, a variable resistor R10, a resistor R11 and a capacitor C4; the first output end of the current transformer is respectively connected with one end of a resistor R1, one end of a resistor R2 and one end of a resistor R4, the second output end of the current transformer is respectively connected with the other end of the resistor R1, one end of the resistor R3 and one end of the resistor R5, the other end of the resistor R4 is respectively connected with one end of a capacitor C1 and one end of a resistor R6, the other end of the resistor R5 is respectively connected with one end of a capacitor C2 and one end of a resistor R7, the other end of the resistor R6 is connected with a first voltage input end of the electric energy metering module, the other end of the resistor R7 is connected with a second voltage input end of the electric energy metering module, the output end of the voltage transformer is respectively connected with one end of a resistor R8 and one end of a resistor R9, the other end of the resistor R9 is respectively connected with one end of the resistor R11, one end of the capacitor C4 and the current input of the electric energy metering module through a variable resistor R10.
5. The intelligent remote electric energy metering system of claim 4, wherein: the voltage conversion circuit further comprises an inductor L1 and an inductor L2, the first output end of the current transformer is connected with one end of the resistor R1, one end of the resistor R2 and one end of the resistor R4 through the inductor L1, and the second output end of the current transformer is connected with the other end of the resistor R1, one end of the resistor R3 and one end of the resistor R5 through the inductor L2.
6. The intelligent remote electric energy metering system of claim 1, wherein: the remote wireless communication module is a GPRS remote wireless transmission module or a 4G wireless transmission module; the power line carrier communication module is a low-voltage power line narrowband carrier communication module or a low-voltage power line broadband power line carrier communication module.
7. The intelligent remote electric energy metering system of claim 6, wherein: the low-voltage power line broadband power carrier communication module adopts a power line carrier chip with the working frequency of 8 MHz-10 MHz.
8. The intelligent remote electric energy metering system of claim 2, wherein: the electric energy metering module is an HLW8112 metering chip, and the data processing module is an STM32F407ZGT6 processor.
9. The intelligent remote electric energy metering system of claim 2, wherein: the intelligent electric energy remote metering system further comprises a data display unit and an alarm unit, wherein the data display unit and the alarm unit are respectively connected with the data processing module.
CN201920515565.1U 2019-04-16 2019-04-16 Intelligent electric energy remote metering system Expired - Fee Related CN210323193U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111682887A (en) * 2020-07-16 2020-09-18 国网河南省电力公司周口供电公司 Power carrier communication method
CN116886130A (en) * 2023-09-08 2023-10-13 北京前景无忧电子科技股份有限公司 Low-voltage carrier intelligent networking method and system based on digital signal processing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111682887A (en) * 2020-07-16 2020-09-18 国网河南省电力公司周口供电公司 Power carrier communication method
CN111682887B (en) * 2020-07-16 2021-07-30 国网河南省电力公司周口供电公司 Power carrier communication method
CN116886130A (en) * 2023-09-08 2023-10-13 北京前景无忧电子科技股份有限公司 Low-voltage carrier intelligent networking method and system based on digital signal processing
CN116886130B (en) * 2023-09-08 2023-11-24 北京前景无忧电子科技股份有限公司 Low-voltage carrier intelligent networking method and system based on digital signal processing

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