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CN110308314A - Low-voltage anti-theft electric switch and its electricity anti-theft method - Google Patents

Low-voltage anti-theft electric switch and its electricity anti-theft method Download PDF

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Publication number
CN110308314A
CN110308314A CN201910505758.3A CN201910505758A CN110308314A CN 110308314 A CN110308314 A CN 110308314A CN 201910505758 A CN201910505758 A CN 201910505758A CN 110308314 A CN110308314 A CN 110308314A
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CN
China
Prior art keywords
module
voltage
low
theft
electric switch
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Pending
Application number
CN201910505758.3A
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Chinese (zh)
Inventor
谈赛
贾俊
郑文涓
李德
程建
蔡寄文
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Wasion Electric Co Ltd
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Wasion Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wasion Electric Co Ltd filed Critical Wasion Electric Co Ltd
Priority to CN201910505758.3A priority Critical patent/CN110308314A/en
Publication of CN110308314A publication Critical patent/CN110308314A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/02Constructional details
    • G01R11/24Arrangements for avoiding or indicating fraudulent use
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a kind of low-voltage anti-theft electric switches, including voltage sample module, current sampling module, power module, controller module, clock module and communication module;Low-voltage electricity larceny prevention switch is serially connected on power line, is located at electric energy meter front end;Power module power supply;Voltage sample module samples power voltage line signal simultaneously uploads controller module;Current sampling module sample power line current signal simultaneously uploads controller module;Clock module provides clock signal;Controller module receives voltage, current sampling signal carries out electrical energy measurement, and passes through communication module and PERCOM peripheral communication.The invention also discloses the electricity anti-theft methods of the low-voltage anti-theft electric switch.The present invention before electric energy meter by increasing the low-voltage anti-theft electric switch with metering and communication function, and to the mode that the continuous data of low-voltage anti-theft electric switch and electric energy meter compares, realize prevention, discovery and the upload to electricity stealing, and technical solution of the present invention high reliablity, stealing detect high-efficient.

Description

Low-voltage anti-theft electric switch and its electricity anti-theft method
Technical field
Present invention relates particularly to a kind of low-voltage anti-theft electric switch and its electricity anti-theft methods.
Background technique
With the development and the improvement of people's living standards of economic technology, electric energy has become people's production and life In essential secondary energy sources, endless convenience is brought to people's production and life.
But with the increase of electricity consumption, the expense of the electricity charge also gradually increases.A small number of criminals are in order to reach few friendship Or the purpose that do not pay tariff, start stealing.Currently used stealing electricity method is varied, as being shorted for measuring electric energy Secondary current mutual inductor, the electric current for acquiring electric energy meter are less than actual current value, or the outlet of electric energy meter and inlet wire is short It connects, gets around electric energy meter.To make ammeter that can not normally be metered into accurate electricity data.Stealing can not only give power supply enterprise's band Carry out financial losses, more seriously stealing can upset the topological structure of power grid, to influence the safe and reliable operation of power grid.
Currently, user's stealing in order to prevent, power supply enterprise is mostly the mode of manual patrol by the way of, or is used Mobile electric energy logging carries out thief-proof pyroelectric monitor.But the mode of manual patrol is not only time-consuming and laborious, but also efficiency pole Low, reliability is not also high.
Summary of the invention
One of the objects of the present invention is to provide a kind of high reliablity and the high low-voltage anti-theft electric switches of detection efficiency.
The second object of the present invention is to provide a kind of electricity anti-theft method of low-voltage anti-theft electric switch.
This low-voltage anti-theft electric switch provided by the invention, including voltage sample module, current sampling module, power supply mould Block, controller module, clock module and communication module;Voltage sample module, current sampling module, clock module and communication mould Block is connect with controller module;Low-voltage electricity larceny prevention switch is serially connected on power line, and is located at the front end of electric energy meter;Power supply mould Block is powered to the low-voltage anti-theft electric switch;Voltage sample module be used for sample connected power line voltage signal and Pass controller module;Current sampling module is used to sample the current signal of connected power line and uploads controller module;When Clock module is used to provide clock signal to controller module;Controller module is for receiving voltage sampling signal and current sample Signal simultaneously carries out electrical energy measurement, while passing through communication module and PERCOM peripheral communication.
The low-voltage anti-theft electric switch further includes memory module;Memory module is connect with controller module, is used for Store the operational data of the low-voltage anti-theft electric switch.
The memory module is the circuit being made of the memory chip of model M24C512A.
The voltage sample module is the voltage sample module being made of amplifier.
The current sampling module includes current transformer and current sampling circuit;Current transformer is connected to electric power On line and sample power line current signal;Signal after sampling is converted to voltage signal by current sampling circuit and handles After upload to controller module.
The current sampling circuit is the current sampling circuit being made of amplifier.
The controller module is the controller module being made of the controller chip of model KM34.
The clock module is the clock module being made of the clock chip of model RX8025.
The communication module includes the first telecommunication circuit and the second telecommunication circuit;First telecommunication circuit and electric energy meter Communication interface connects and carries out data communication;Second telecommunication circuit and the information acquisition terminal of electric system connect line number of going forward side by side According to communication.
First telecommunication circuit is the telecommunication circuit being made of the RS485 communication chip of model MAX13085;Institute The second communication module stated is the telecommunication circuit being made of the RS485 communication chip of model MAX13085.
The invention also discloses a kind of electricity anti-theft methods of low-voltage anti-theft electric switch, include the following steps:
S1. low-voltage anti-theft electric switch obtains the voltage sampling signal and current sampling signal of connected power line;
S2. low-voltage anti-theft electric switch carries out electrical energy measurement according to voltage sampling signal and current sampling signal;
S3. low-voltage anti-theft electric switch is communicated with the electric energy meter of rear end by communication module and obtains the meter of electric energy meter Measure data;
S4. low-voltage anti-theft electric switch compares the continuous data of electric energy meter and the continuous data of itself, and according to such as Lower rule is judged:
If the difference of the continuous data of electric energy meter and the continuous data of itself in the first setting range, is assert at this time Stealing event does not occur;
If the difference of the continuous data of electric energy meter and the continuous data of itself is greater than the first setting range, assert at this time Stealing event occurs;
S5. the judgement result of step S4 is sent to electric energy meter by communication module by low-voltage anti-theft electric switch and information is adopted Collect terminal.
This low-voltage anti-theft electric switch and its electricity anti-theft method provided by the invention have by increasing before electric energy meter There is a low-voltage anti-theft electric switch of metering and communication function, and the continuous data of low-voltage anti-theft electric switch and electric energy meter is carried out pair The mode of ratio realizes the prevention to electricity stealing, in time discovery and uploads in time, and technical solution of the present invention is reliable Property it is high, and the efficiency of stealing detection is higher.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of low-voltage anti-theft electric switch of the invention and electric system.
Fig. 2 is the functional block diagram of low-voltage anti-theft electric switch of the invention.
Fig. 3 is the circuit theory schematic diagram of the current sampling circuit all the way of low-voltage anti-theft electric switch of the invention.
Fig. 4 is the circuit theory schematic diagram of the voltage sampling circuit all the way of low-voltage anti-theft electric switch of the invention.
Fig. 5 is the circuit theory schematic diagram of the controller module of low-voltage anti-theft electric switch of the invention.
Fig. 6 is the circuit theory schematic diagram of the memory module of low-voltage anti-theft electric switch of the invention.
Fig. 7 is the circuit theory schematic diagram of the clock module of low-voltage anti-theft electric switch of the invention.
Fig. 8 is the circuit theory schematic diagram of the first telecommunication circuit of low-voltage anti-theft electric switch of the invention.
Fig. 9 is the circuit theory schematic diagram of the second telecommunication circuit of low-voltage anti-theft electric switch of the invention.
Figure 10 is the method flow diagram of electricity anti-theft method of the invention.
Specific embodiment
As shown in Figure 1 be the connection schematic diagram of low-voltage anti-theft electric switch of the invention and electric system: low-voltage anti-theft is established by cable Pass is serially connected on power line, and is located at electric energy meter front end;Low-voltage anti-theft electric switch is used for before electric energy meter, is carried out to electric energy It measures for the first time;Meanwhile low-voltage anti-theft electric switch connects electric energy meter and information acquisition terminal by communication line, and information collection Terminal is no longer directly connected to electric energy meter.When information acquisition terminal needs are communicated with electric energy meter, low-voltage anti-theft electric switch can Transmission to carry out communication data as intermediate bridge, to realize the data communication between electric energy meter and information acquisition terminal.
Be illustrated in figure 2 the functional block diagram of low-voltage anti-theft electric switch of the invention: this low pressure provided by the invention is anti- Stealing switch, including voltage sample module, current sampling module, power module, controller module, clock module, communication module And memory module;Memory module, voltage sample module, current sampling module, clock module and communication module with control The connection of device module;Low-voltage electricity larceny prevention switch is serially connected on power line, and is located at the front end of electric energy meter;Power module is to described low Press electricity fraudulent using-proof switch power supply;Voltage sample module is used to sample the voltage signal of connected power line and uploads controller mould Block;Current sampling module is used to sample the current signal of connected power line and uploads controller module;Clock module is used for Clock signal is provided to controller module;Controller module is for receiving voltage sampling signal and current sampling signal and carrying out Electrical energy measurement, while passing through communication module and PERCOM peripheral communication;Memory module is for storing the low-voltage anti-theft electric switch Operational data.
It is illustrated in figure 3 the circuit theory schematic diagram of the current sampling circuit all the way of low-voltage anti-theft electric switch of the invention: It as shown is A phase current sampling circuit of the invention, same also B phase and C phase current sampling circuit, and B phase and C Phase current sampling circuit is identical as A phase current sampling circuit;In current sampling circuit, IA- connects A phase current mutual inductance with IA+ The output end of device;After the current sampling signal of current transformer output is converted to voltage signal by resistance R3, then pass through resistance R1 carries out current limliting, after then carrying out voltage follow by the voltage follower being made of amplifier U1, obtains A phase current sampling letter Number ADC_IA simultaneously uploads to controller module;Resistance R2 and C1 are for being filtered signal.
It is illustrated in figure 4 the circuit theory schematic diagram of the voltage sampling circuit all the way of low-voltage anti-theft electric switch of the invention: It as shown is A phase voltage sample circuit of the invention, same also B phase and C phase voltage sample circuit, and B phase and C Phase voltage sample circuit is identical as A phase voltage sample circuit;The A phase line of UA connection power line, zero phase of UN connection power line Line;After voltage between UA and UN two lines is divided by resistance R13 and R16, the voltage of resistance R16 is carried out by resistance R14 Current limliting after then carrying out voltage follow by the voltage follower being made of amplifier U7, obtains final A phase voltage sampling letter Number ADC_UA is simultaneously input to controller module;Resistance R15 and capacitor C6 composition RC filter circuit is filtered signal.
It is illustrated in figure 5 the circuit theory schematic diagram of the controller module of low-voltage anti-theft electric switch of the invention: controller Module is constituted using the controller chip of model KM34;Wherein, three road current sampling signal ADC_IA, ADC_IB and ADC_ IC, three road voltage sampling signal ADC_UA, ADC_UB and ADC_UC upload to controller chip U13 pin (ADC1~ ADC6);Meanwhile the SDA pin of the I2C communication bus of controller chip connected with SCL pin rear end memory module and when Clock module, while two communication lines pass through respective pull-up resistor (resistance R17 and R18) connection power supply signal VDD, thus Guarantee the level equalization of communication line;The VDD pin of controller chip is directly connected to power supply signal VDD, the GND of controller chip Pin and VREF pin are then grounded simultaneously;The first serial RXD1 of controller chip connects the first telecommunication circuit with TXD1, thus Electric energy meter is connected by the first telecommunication circuit and is communicated;The second serial RXD2 of controller chip connects the second communication with TXD2 Circuit, to pass through the second telecommunication circuit link information acquisition terminal and communicate;Wherein, 485EN1 is for exporting the first communication The work that signal controls the first telecommunication circuit is controlled, 485EN2 is for exporting the second communications control signal control the second communication electricity The work on road.
It is illustrated in figure 6 the circuit theory schematic diagram of the memory module of low-voltage anti-theft electric switch of the invention: memory Module is the module being made of the memory chip of model M24C512A;1 foot of chip~4 feet are directly grounded;Chip The I2C communications pins of 5 feet and 6 feet as I2C bus connection controller module, while 7 feet of chip are hanging, 8 feet connect power supply Signal takes electricity.
It is illustrated in figure 7 the circuit theory schematic diagram of the clock module of low-voltage anti-theft electric switch of the invention: clock module The circuit constituted using the clock chip of model RX8025;The 6 feet connection power supply signal of chip simultaneously takes electricity;11 feet of chip connect Ground;7 feet of chip are grounded, and 2 feet and 13 feet of chip are I2C communications pins, are directly connected to the I2C communications pins of controller module And it communicates and (provides clock signal);Meanwhile other pins of chip are then all hanging.
It is illustrated in figure 8 the circuit theory schematic diagram of the first telecommunication circuit of low-voltage anti-theft electric switch of the invention: first Telecommunication circuit is the circuit being made of the communication chip of model MAX13085;The RXD1 of the 1 foot connection controller module of chip Signal of communication, 4 feet connect the TXD1 signal of communication of controller module, and 2 feet and 3 feet are all connected with the first communication of controller module Control signal 485EN1;The direct power supply signal of 8 feet of chip simultaneously takes electricity;5 feet of chip are directly grounded;6 feet and 7 feet of chip It is then the RS485 communications pins of external connection;6 feet pass through pull down resistor by pull-up resistor R11 connection power supply signal, 7 feet R12 ground connection, to ensure that the stabilization of 6 feet and 7 the feet signal when being not used.
It is illustrated in figure 9 the circuit theory schematic diagram of the second telecommunication circuit of low-voltage anti-theft electric switch of the invention: second Telecommunication circuit is the circuit being made of the communication chip of model MAX13085;The RXD2 of the 1 foot connection controller module of chip Signal of communication, 4 feet connect the TXD2 signal of communication of controller module, and 2 feet and 3 feet are all connected with the first communication of controller module Control signal 485EN2;The direct power supply signal of 8 feet of chip simultaneously takes electricity;5 feet of chip are directly grounded;6 feet and 7 feet of chip It is then the RS485 communications pins of external connection;6 feet pass through pull down resistor by pull-up resistor R19 connection power supply signal, 7 feet R24 ground connection, to ensure that the stabilization of 6 feet and 7 the feet signal when being not used.
When information acquisition terminal needs communicated with electric energy meter when, information acquisition terminal directly pass through the first telecommunication circuit and Communication data is sent to low-voltage anti-theft electric switch by the first telecommunication circuit by low-voltage electricity larceny prevention Switch Communication, and low-voltage anti-theft Electric switch then passes through the second telecommunication circuit and communication data is sent to electric energy meter;Similar, electric energy meter needs to upload data to letter When ceasing acquisition terminal, the data information of upload can be uploaded to low-voltage anti-theft electric switch by the second telecommunication circuit by electric energy meter, Communication data can be uploaded to information by the first telecommunication circuit in the information acquisition terminal free time and adopted by low-voltage anti-theft electric switch Collect terminal.Due to the presence of low-voltage anti-theft electric switch, so that there are a communications bridges between information acquisition terminal and electric energy meter Beam.Meanwhile low-voltage anti-theft electric switch also can individually be communicated with information acquisition terminal or electric energy meter and data interaction.
In normal electricity consumption electric quantity acquisition, low-voltage anti-theft electric switch is as information acquisition terminal and electric supply meter Communication channel.Information acquisition terminal can be with electric supply meter normal communication at this time.Realize that information about power is acquired, responded in event And relevant control operation etc..The communication routing unit of low-voltage anti-theft electric switch is as a data transmission channel at this time, to terminal Data between ammeter carry out transparent transmission transmission, without interference.
Low-voltage anti-theft electric switch can be by monitoring communication channel, when information acquisition terminal no longer electric supply meter downwards When sending data, communication channel is idle at this time.Low-voltage anti-theft electric switch turns off information acquisition terminal by control communication unit With the communication channel of electric supply meter, the communication channel of a low-voltage anti-theft electric switch and electric supply meter is re-established.Low-voltage anti-theft Electric switch calls the related datas such as the electricity data for surveying user and load curve together by transmitting order to lower levels.After the completion of to be transmitted, it will lead to Letter channel reverts to the communication channel of information acquisition terminal and electric supply meter.
Since electricity data is corresponding with the time, to ensure electricity data accuracy, when information acquisition terminal issues broadcast When being ordered when school.Electric supply meter and low-voltage anti-theft electric switch can receive this and order and operation is calibrated.Low-voltage anti-theft Electric switch updates the clock after calibration into real-time clock module.And using this clock as the reference frame to electricity.
Low-voltage anti-theft electric switch is handled by the electric current, the voltage signal that incude from current transformer and bus, is divided Analysis and calculating.Obtain real-time measurement values and the charge values such as electric current, voltage, the power of bus.Form the load curve of route.Together When timing freeze operation and storage are carried out to electricity.
It is as shown in Figure 10 the method flow diagram of electricity anti-theft method of the invention: this low pressure disclosed by the invention The electricity anti-theft method of electricity fraudulent using-proof switch, includes the following steps:
S1. low-voltage anti-theft electric switch obtains the voltage sampling signal and current sampling signal of connected power line;
S2. low-voltage anti-theft electric switch carries out electrical energy measurement according to voltage sampling signal and current sampling signal;
S3. low-voltage anti-theft electric switch is communicated with the electric energy meter of rear end by communication module and obtains the meter of electric energy meter Measure data;
S4. low-voltage anti-theft electric switch compares the continuous data of electric energy meter and the continuous data of itself, and according to such as Lower rule is judged:
If the difference of the continuous data of electric energy meter and the continuous data of itself in the first setting range, is assert at this time Stealing event does not occur;
If the difference of the continuous data of electric energy meter and the continuous data of itself is greater than the first setting range, assert at this time Stealing event occurs;
S5. the judgement result of step S4 is sent to electric energy meter by communication module by low-voltage anti-theft electric switch and information is adopted Collect terminal.
When judgement has electricity stealing generation, intelligent switch can according to circumstances, by intelligent switch in nearest a period of time The ammeter load curve data that load curve data (electric current, voltage, power etc.) call survey together with switch from ammeter are compared one by one To analysis.So as to according to circumstances determine the stealing period, carried out by the electricity number that the timing to switch and ammeter is freezed Analysis comparison, it can be deduced that the specific electricity at times of stealing.
, can according to the actual situation after judging stealing, remote control switch realizes trip operation, open-circuit line, to have Effect control user's stealing, prevents loss from expanding.

Claims (10)

1. a kind of low-voltage anti-theft electric switch, it is characterised in that including voltage sample module, current sampling module, power module, control Device module, clock module and communication module processed;Voltage sample module, current sampling module, clock module and communication module with Controller module connection;Low-voltage electricity larceny prevention switch is serially connected on power line, and is located at the front end of electric energy meter;Power module is to described The power supply of low-voltage anti-theft electric switch;Voltage sample module is used to sample the voltage signal of connected power line and uploads controller mould Block;Current sampling module is used to sample the current signal of connected power line and uploads controller module;Clock module is used for Clock signal is provided to controller module;Controller module is for receiving voltage sampling signal and current sampling signal and carrying out electricity It can measure, while pass through communication module and PERCOM peripheral communication.
2. low-voltage anti-theft electric switch according to claim 1, it is characterised in that further include memory module;Memory module It is connect with controller module, for storing the operational data of the low-voltage anti-theft electric switch.
3. low-voltage anti-theft electric switch according to claim 2, it is characterised in that the memory module is by model The circuit that the memory chip of M24C512A is constituted.
4. low-voltage anti-theft electric switch described according to claim 1~one of 3, it is characterised in that the voltage sample module is The voltage sample module being made of amplifier.
5. low-voltage anti-theft electric switch described according to claim 1~one of 3, it is characterised in that the current sampling module packet Include current transformer and current sampling circuit;Current transformer is connected on power line and the current signal of sample power line;It adopts Signal after sample uploads to controller module after being converted to voltage signal and processing by current sampling circuit;The electric current is adopted Sample circuit is the current sampling circuit being made of amplifier.
6. low-voltage anti-theft electric switch described according to claim 1~one of 3, it is characterised in that the controller module is served as reasons The controller module that the controller chip of model KM34 is constituted.
7. low-voltage anti-theft electric switch described according to claim 1~one of 3, it is characterised in that the clock module is by type Number for RX8025 clock chip constitute clock module.
8. low-voltage anti-theft electric switch described according to claim 1~one of 3, it is characterised in that the communication module includes the One telecommunication circuit and the second telecommunication circuit;First telecommunication circuit and the communication interface of electric energy meter connect and carry out data communication;The Two telecommunication circuits and the information acquisition terminal of electric system connect and carry out data communication.
9. low-voltage anti-theft electric switch according to claim 8, it is characterised in that first telecommunication circuit is by model The telecommunication circuit constituted for the RS485 communication chip of MAX13085;The second communication module is by model MAX13085 RS485 communication chip constitute telecommunication circuit.
10. the electricity anti-theft method of low-voltage anti-theft electric switch described in a kind of one of claim 1~9, includes the following steps:
S1. low-voltage anti-theft electric switch obtains the voltage sampling signal and current sampling signal of connected power line;
S2. low-voltage anti-theft electric switch carries out electrical energy measurement according to voltage sampling signal and current sampling signal;
S3. low-voltage anti-theft electric switch is communicated with the electric energy meter of rear end by communication module and obtains the stoichiometric number of electric energy meter According to;
S4. low-voltage anti-theft electric switch compares the continuous data of electric energy meter and the continuous data of itself, and according to following rule Then judged:
If the difference of the continuous data of electric energy meter and the continuous data of itself in the first setting range, is assert and is not occurred at this time Stealing event;
If the difference of the continuous data of electric energy meter and the continuous data of itself is greater than the first setting range, assert and steal at this time Electric event;
S5. the judgement result of step S4 is sent to electric energy meter and information acquisition terminal by communication module by low-voltage anti-theft electric switch.
CN201910505758.3A 2019-06-12 2019-06-12 Low-voltage anti-theft electric switch and its electricity anti-theft method Pending CN110308314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910505758.3A CN110308314A (en) 2019-06-12 2019-06-12 Low-voltage anti-theft electric switch and its electricity anti-theft method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910505758.3A CN110308314A (en) 2019-06-12 2019-06-12 Low-voltage anti-theft electric switch and its electricity anti-theft method

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CN110308314A true CN110308314A (en) 2019-10-08

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CN112542076A (en) * 2020-12-04 2021-03-23 广东电网有限责任公司江门供电局 Anti-electricity-stealing skill training device
CN113009219A (en) * 2021-01-26 2021-06-22 江阴长仪集团有限公司 Intelligent electric energy meter based on broadband carrier module

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CN105486914A (en) * 2015-11-22 2016-04-13 国网辽宁省电力有限公司朝阳供电公司 AC sampling device of electricity larceny preventive power load monitoring system
CN205826723U (en) * 2016-07-20 2016-12-21 国网江西省电力公司南昌供电分公司 The low pressure device against charge evasion of electrically-based line carrier wave
CN107449951A (en) * 2017-09-22 2017-12-08 郑州启硕电子科技有限公司 A kind of anti-electricity-theft intelligent electric meter
CN210181110U (en) * 2019-06-12 2020-03-24 威胜电气有限公司 Low-voltage electricity stealing prevention switch

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CN103616562A (en) * 2013-11-26 2014-03-05 航天科工深圳(集团)有限公司 Ring main unit electricity larceny prevention system and method
CN103954816A (en) * 2014-04-30 2014-07-30 国网上海市电力公司 Inelegant remote anti-electricity-stealing inspection method
CN104535813A (en) * 2015-01-29 2015-04-22 威胜集团有限公司 Electricity larceny prevention system and electricity larceny judgment method for large specific power transformer electricity user
CN105388357A (en) * 2015-10-19 2016-03-09 国网河南省电力公司电力科学研究院 Electricity larceny prevention system
CN105486914A (en) * 2015-11-22 2016-04-13 国网辽宁省电力有限公司朝阳供电公司 AC sampling device of electricity larceny preventive power load monitoring system
CN205826723U (en) * 2016-07-20 2016-12-21 国网江西省电力公司南昌供电分公司 The low pressure device against charge evasion of electrically-based line carrier wave
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112542076A (en) * 2020-12-04 2021-03-23 广东电网有限责任公司江门供电局 Anti-electricity-stealing skill training device
CN113009219A (en) * 2021-01-26 2021-06-22 江阴长仪集团有限公司 Intelligent electric energy meter based on broadband carrier module

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