CN106253951A - The suppression interference method of signal, equipment and power information acquisition system - Google Patents
The suppression interference method of signal, equipment and power information acquisition system Download PDFInfo
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- CN106253951A CN106253951A CN201610803914.0A CN201610803914A CN106253951A CN 106253951 A CN106253951 A CN 106253951A CN 201610803914 A CN201610803914 A CN 201610803914A CN 106253951 A CN106253951 A CN 106253951A
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- Prior art keywords
- signal
- power information
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- filter
- force
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/5433—Remote metering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5491—Systems for power line communications using filtering and bypassing
Abstract
The invention provides a kind of interference method of signal, equipment and power information acquisition system suppressing power information, relate to the acquisition technique field of the power information of electrical network.Described method includes: isolating device obtains carrier signal by electric lines of force, and described isolating device carries out isolation processing to described carrier signal, obtains the first signal；Described first signal is filtered processing by filter, obtains power information；Described power information is exported by described filter by described electric lines of force.The present invention is by arranging isolating device and filter between the electrical equipment and main website of electrical network, it is achieved that to disturbing the suppression of signal in power information, improve the success rate that power information gathers.
Description
Technical field
The present invention, about electric power network technique field, especially with regard to the acquisition technique of the power information of electrical network, is concretely
A kind of interference method of signal, equipment and power information acquisition system suppressing power information.
Background technology
This part is it is intended that the embodiments of the present invention stated in claims provide background or context.Herein
Describe not because being included in this part just recognize it is prior art.
In order to carry out the line loss same period and the specialized management of management line loss further, reduce " evaporating, emitting, dripping or leaking of liquid or gas " phenomenon, further
Strengthen programming count and the information transmission of line loss, improve the collection success rate of power consumption, need to improve power information acquisition system,
Power information acquisition system can be divided into main website, communication channel, collecting device three part according to deployed position physically.Communication letter
Road is to connect terminal unit and the bridge of main website and tie, the communication channel that current low pressure meter-copy collector is used predominantly electricity
Line of force carrier wave, electric line carrier communication refers to utilize existing electric lines of force, by carrier system, analog or digital signal is carried out height
The technology of speed transmission, this communication modes need not again set up network, as long as there being electric lines of force, just can carry out data transmission.But
It is that transformator, frequency conversion motor, elevator and power electronic equipment etc. can produce high-frequency harmonic and power frequency interference signals, to electric power
Line carrier communication produces interference, affects the collection success rate of power information.
Power information acquisition system of the prior art is as it is shown in figure 1, in order to suppress high-frequency harmonic, the collection at electrical network sets
Wave filter is installed additional on electric lines of force between standby and main website, the two poles of the earth of wave filter phase-connecting wire A, B, C and neutral conductor N respectively, phase line A,
High-frequency harmonic in B, C is suppressed by wave filter, thus reduces and do power information acquisition system electric line carrier communication signal
Disturb.
But enter the existing power frequency interference signals of interference signal of wave filter from electrical network, have again harmonic high frequency interference wave signal,
Wave filter can only suppress harmonic high frequency interference wave signal, it is impossible to suppression power frequency interference signals, and wave filter cannot prevent because of on circuit
The permanent damages that circuit is caused by the spike that electrical equipment is switched in or out causing.
Therefore, how to research and develop out a kind of new power information acquisition scheme, it can suppress high-frequency harmonic to disturb
Signal, can suppress again power frequency interference signals and circuit will not cause permanent damage is that this area technology urgently to be resolved hurrily is difficult
Topic.
Summary of the invention
Cannot filterer's frequency interference signal and cannot preventing in order to solve power information acquisition system of the prior art
Circuit is caused the technological deficiency of permanent damages by spike, the invention provides a kind of interference signal suppressing power information
Method, equipment and power information acquisition system, by arrange between the electrical equipment of electrical network and main website isolating device and
Filter, by isolating device filterer's frequency interference signal, and decays to high frequency harmonic signals, the high-frequency harmonic after decay
Signal is filtered by wave filter, and isolation circuit can prevent the spike permanent damages to circuit simultaneously, it is achieved thereby that
To power information is disturbed the suppression of signal, improve the success rate that power information gathers.
To achieve these goals, the present invention provides a kind of method of interference signal suppressing power information, described method
Including: isolating device obtains carrier signal by electric lines of force, and described carrier signal includes harmonic high frequency interference wave signal, Hz noise
The power information of the electrical equipment on signal, spike and described electric lines of force；Described isolating device is to described carrier signal
Carrying out isolation processing, obtain the first signal, described first signal includes on high-frequency harmonic interference signal and described electric lines of force
The power information of electrical equipment；Described first signal is filtered processing by filter, obtains power information；Described filtering dress
Put and described power information is exported by described electric lines of force.
In a preferred embodiment of the invention, described isolating device includes that a coupling transformer couples transformation with described
Device series connection an electric group and with the described electric group diode connected, wherein said electric group include a coupling electric capacity,
The resistance that electric capacity is in parallel is coupled with described.
In a preferred embodiment of the invention, described diode is transient voltage suppressor, described coupling electric capacity
Pressure voltage more than 300V, described resistance is transient voltage suppressor more than or equal to diode described in 1M Ω, described coupling
The pressure voltage of electric capacity is more than 300V, and described resistance is more than or equal to 1M Ω.
In a preferred embodiment of the invention, described filter is Butterworth filter or Chebyshev's filtering
Device.
In a preferred embodiment of the invention, described method also includes: signal receiving device receives and analyze described
Power information.
In a preferred embodiment of the invention, described signal receiving device is spectrum analyzer.
The equipment of a kind of interference signal suppressing power information, described equipment bag are it is an object of the invention to provide
Include the filter that isolating device is connected, wherein, described isolating device with described isolating device, for being obtained by electric lines of force
Taking carrier signal, described carrier signal is carried out isolation processing, obtain the first signal, described carrier signal includes that high-frequency harmonic is done
Disturb the power information of electrical equipment on signal, power frequency interference signals, spike and described electric lines of force, described first signal
Power information including the electrical equipment on harmonic high frequency interference wave signal and described electric lines of force；Described filter, for right
Described first signal is filtered processing, and obtains power information, described power information is exported by described electric lines of force.
In a preferred embodiment of the invention, described equipment also includes that the signal being connected with described filter receives
Device, described signal receiving device, it is used for receiving and analyze described power information.
It is an object of the invention to provide a kind of power information acquisition system, including collecting device, main website and press down
The equipment of the interference signal of power information processed, wherein, described collecting device, for gathering the power information of electrical equipment, and will
Described power information passes through power line transmission；Described suppression power information interference signal equipment include: isolating device and
The filter that described isolating device is connected, wherein, described isolating device, believe for obtaining carrier wave by described electric lines of force
Number, described carrier signal is carried out isolation processing, obtains the first signal, described carrier signal include harmonic high frequency interference wave signal,
The power information of the electrical equipment on power frequency interference signals, spike and described electric lines of force, described first signal includes height
Frequently the power information of the electrical equipment on harmonic interference signals and described electric lines of force；Described filter, for described the
One signal is filtered processing, and obtains power information, by described power information by the output of described electric lines of force to described main website.
The beneficial effects of the present invention is, it is provided that a kind of suppress power information interference the method for signal, equipment and
Power information acquisition system, by arranging isolating device and filter between the electrical equipment of electrical network and main website, by every
From device filterer's frequency interference signal, and decaying high frequency harmonic signals, the high frequency harmonic signals after decay is by filtering
Device filters, and isolation circuit can prevent the spike permanent damages to circuit simultaneously, it is achieved thereby that in power information
Interference signal suppression, improve power information gather success rate, solve power information acquisition system of the prior art without
Method filterer's frequency interference signal and cannot prevent spike from circuit causing the technological deficiency of permanent damages.
For the above and other objects, features and advantages of the present invention can be become apparent, preferred embodiment cited below particularly,
And coordinate institute's accompanying drawings, it is described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation of power information acquisition system of the prior art；
The structural representation of a kind of power information acquisition system that Fig. 2 provides for the embodiment of the present invention；
The embodiment one of the equipment of a kind of interference signal suppressing power information that Fig. 3 provides for the embodiment of the present invention
Structured flowchart；
The embodiment two of the equipment of a kind of interference signal suppressing power information that Fig. 4 provides for the embodiment of the present invention
Structured flowchart；
The electricity of isolating device in the equipment of a kind of interference signal suppressing power information that Fig. 5 provides for the embodiment of the present invention
Road schematic diagram；
The flow chart of the method for a kind of interference signal suppressing power information that Fig. 6 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Art technology skilled artisan knows that, embodiments of the present invention can be implemented as a kind of system, device, equipment,
Method or computer program.Therefore, the disclosure can be to be implemented as following form, it may be assumed that hardware, the softest completely
Part (includes firmware, resident software, microcode etc.), or the form that hardware and software combines.
Principle and spirit below with reference to some representative embodiments of the present invention, in detail the explaination present invention.
The present invention is directed in prior art power information acquisition system cannot filterer's frequency interference signal and cannot preventing
Circuit is caused the technological deficiency of permanent damages by spike, it is proposed that a kind of suppress power information interference signal method,
Equipment and power information acquisition system.
The structural representation of a kind of power information acquisition system that Fig. 2 provides for the embodiment of the present invention, used below
Term " module " and " unit ", can be software and/or the hardware realizing predetermined function.Although the mould described by following example
Block preferably realizes with software, but hardware, or the realization of the combination of software and hardware also may and be contemplated.
Referring to Fig. 2, described power information acquisition system includes collecting device 100, main website 200 and suppression power information
Interference signal equipment 300.Wherein, described collecting device 100, for gathering the power information of electrical equipment, and by described
Power information pass through power line transmission.
The embodiment one of the equipment of a kind of interference signal suppressing power information that Fig. 3 provides for the embodiment of the present invention
Structured flowchart, refers to Fig. 3, and the equipment 300 of the interference signal of described suppression power information includes: isolating device 301 is with described
The filter 302 that isolating device is connected.
Wherein, described isolating device 301, for obtaining carrier signal by described electric lines of force, described carrier signal is entered
Row isolation processing, obtains the first signal, and described carrier signal includes harmonic high frequency interference wave signal, power frequency interference signals, spike arteries and veins
The power information of the electrical equipment in punching and described electric lines of force, described first signal includes high-frequency harmonic interference signal and institute
State the power information of electrical equipment on electric lines of force.That is, the power information of electrical equipment that collecting device 100 collects is passed through
A lot of interference signal (carrier signal the most herein) it has been mingled with after power line transmission.
Described filter, for described first signal is filtered process, obtains power information, by described telecommunications
Cease by the output of described electric lines of force to described main website 200.
In the particular embodiment, connect low-voltage network by phase line and the neutral conductor, enter this equipment from low-voltage network
The existing power frequency component of signal of 300, has again high-frequency carrier signal, and isolating device both can filter power frequency component, can be again high
Frequently carrier signal provides passage.High-frequency carrier signal, by after isolating device, enters filter, and filter can be by high frequency
Interference target signal filter in carrier signal.
The electricity of isolating device in the equipment of a kind of interference signal suppressing power information that Fig. 5 provides for the embodiment of the present invention
Road schematic diagram, refers to Fig. 5, and described isolating device includes the electricity that a coupling transformer T and described coupling transformer T connects
Gas group and with the described electric group diode connected, wherein said electric group includes that a coupling electric capacity C couples electricity with described
Hold a resistance R in parallel.
In a particular embodiment, isolating device uses to couple the capacitor capacitive coupling as main element.
TVS is transient voltage suppressor, plays surge protective effect, and it can be prevented effectively from circuit below and be broken down by high-voltage.Electric power
Equipment on line is switched in or out, and is likely to cause spike, and causes the permanent damages coupling circuit.Electric capacity C is (pressure
Value > 300V) transformator is isolated with industrial frequency AC forceful electric power, carrier signal is coupled in telecommunication circuit simultaneously.Resistance R is (general
>=1M Ω) effect be when off-line to electric capacity C provide discharge channel, prevent high pressure the two ends of electrical equipment plug occur.
Formed filter circuit by the primary coil of coupling electric capacity C and coupling transformer T, prevent the power frequency component of 50Hz, and to high frequency
Carrier signal provides the least decay.Due to carrier wave frequency range signal the most narrower in the range of 3kHz～500kHz to be realized
Coupling, coupling transformer T parameter can have a strong impact on the stability of signal coupling performance, such as the material of magnetic core and the material of coil
And the parameter such as the number of turn.The impedance moment change of low-tension network, will necessarily cause the frequency of carrier signal being coupled out dynamic simultaneously
Change, in order to the carrier signal making input signal receive equipment can meet band requirement, the signal bandwidth being coupled into typically wants remote
More than effective carrier signal bandwidth, it is therefore necessary to utilize filter to transformer coupled go out signal be further processed.
In a particular embodiment of the present invention, filter can use such as Butterworth filter, Chebyshev filter
Signal through isolation circuit is made further Filtering Processing by ripple devices etc., to reduce the interference signal in carrier wave, improves and gathers into
Power.The knot of the embodiment two of the equipment of a kind of interference signal suppressing power information that Fig. 4 provides for the embodiment of the present invention
Structure block diagram, refers to Fig. 4, and described equipment 300 also includes that in embodiment two signal being connected with described filter connects
Receiving apparatus, described signal receiving device 303, it is used for receiving and analyzing described power information, specifically can be come by spectrum analyzer
Realize.Power information is analyzed by signal receiving device 303, with the power information obtained after confirming the filtering of filtered device
Filter effect.
The flow chart of the method for a kind of interference signal suppressing power information that Fig. 6 provides for the embodiment of the present invention, please join
Readding Fig. 6, described method includes:
S101: isolating device by electric lines of force obtain carrier signal, described carrier signal include harmonic high frequency interference wave signal,
The power information of the electrical equipment on power frequency interference signals, spike and described electric lines of force.
S102: described isolating device carries out isolation processing to described carrier signal, obtains the first signal, described first signal
Power information including the electrical equipment on harmonic high frequency interference wave signal and described electric lines of force.
Described first signal is filtered processing by S103: filter, obtains power information.
S104: described power information is exported by described filter by described electric lines of force.
It is the most i.e. the method for a kind of interference signal suppressing power information that the present invention provides, by the electricity consumption at electrical network
Isolating device and filter are set between equipment and main website, by isolating device filterer's frequency interference signal, and to harmonic high frequency
Ripple signal is decayed, and the high frequency harmonic signals after decay is filtered by wave filter, and isolation circuit can prevent spike simultaneously
The pulse permanent damages to circuit, it is achieved thereby that to disturbing the suppression of signal in power information, improve power information collection
Success rate.
In other embodiments of the present invention, described method includes the most also including:
Signal receiving device receives and analyzes described power information.Specifically can be realized by spectrum analyzer.To electricity consumption
Information is analyzed, the filter effect of the power information to obtain after confirming the filtering of filtered device.
Although it should be noted that, describe the operation of the inventive method in the accompanying drawings with particular order, but, this does not requires that
Or hint must perform these operations according to this particular order, or having to carry out the most shown operation could realize the phase
The result hoped.Additionally or alternatively, it is convenient to omit some step, multiple steps are merged into a step and performs, and/or will
One step is decomposed into multiple step and performs.
Below in conjunction with specific embodiment, the power information acquisition system of the present invention is discussed in detail.
Concrete actually used during, first have to relate to the component parameters of isolating device, can be according to power circuit
Voltage, electric current and impedance operator select suitable TVC, electric capacity, resistance and transformator.
Its secondary connection being combined circuit, selects suitable wave filter, by wave filter and isolation circuits cascading, passes through
Signal receiver analyzes the filter effect of circuit.
Testing application verification by scene, the equipment of the interference signal of the suppression power information that the present invention provides can be effective
The interference that electric line carrier communication is produced by suppression electrical equipment medium-high frequency harmonic wave, can be by line in the case of having interference signal
The collection success rate damaging analysis power consumption brings up to 60% from 20%.The isolation circuit of the present invention is tied mutually with Butterworth filter
The scheme closed can suppress to greatest extent from the noise jamming on electric lines of force, it is achieved the optimum reception of useful signal, can have
Effect improves the point-to-point communication transmittability in current low pressure resident's automatic meter reading system, improves the real-time of communication with reliable
Property.Meanwhile, this device can suppress electric power built-in unit to be switched in or out the spike caused, it is to avoid couples the permanent of circuit
Damage.
As it has been described above, be a kind of interference method of signal, equipment and use suppressing power information that the present invention provides
Power utilization information collection system, it can suppress the interference that electric line carrier communication is produced by high-frequency harmonic, power frequency interference signals, improve
The collection success rate of line loss analyzing power consumption, it is possible to suppress from the noise jamming on electric lines of force to greatest extent, it is achieved useful
The optimum reception of signal, can be effectively improved the point-to-point communication transmittability in current low pressure resident's automatic meter reading system, improves
The real-time of communication and reliability.
The technical goal of this invention and being technically characterized by comprising the steps as follows:
(1) method utilizing isolation circuit and wave filter to combine suppresses the high-frequency harmonic in power line carrier, power frequency to do
Disturb, improve power consumption and gather success rate.
(2) method that isolation circuit and wave filter combine can suppress electric power built-in unit to be switched in or out the point caused
Peak pulse, it is to avoid the permanent damages of coupling circuit.
Can clearly distinguish for the improvement of a technology is that the improvement on hardware is (such as, to diode, crystal
The improvement of the circuit structures such as pipe, switch) or software on improvement (for the improvement of method flow).But, along with technology
Development, the improvement of current a lot of method flows can be considered as directly improving of hardware circuit.Designer is almost
All obtain corresponding hardware circuit by being programmed in hardware circuit by the method flow of improvement.Therefore, it cannot be said that one
The improvement of individual method flow cannot realize by hardware entities module.Such as, PLD (Programmable
Logic Device, PLD) (such as field programmable gate array (Field Programmable Gate Array, FPGA)) just
Being such a integrated circuit, device programming is determined by its logic function by user.Programmed voluntarily one by designer
Individual digital display circuit " integrated " is on a piece of PLD, without chip maker designing and make special integrated circuit
Chip 2.And, nowadays, replacing and manually make IC chip, " logic compiler is used in this programming the most mostly instead
(logic compiler) " software realizes, and software compiler used when it is write with program development is similar, and to compile
The most handy specific programming language of source code before is write, and this is referred to as hardware description language (Hardware
Description Language, HDL), and HDL the most not only has one, but have many kinds, such as ABEL (Advanced
Boolean Expression Language)、AHDL(Altera Hardware Description Language)、
Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL(Java
Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby Hardware
Description Language) etc., that commonly use most is VHDL (Very-High-Speed Integrated
Circuit Hardware Description Language) and Verilog2.Those skilled in the art are also it should be clear that only
Need with above-mentioned several hardware description languages, method flow is slightly made programming in logic and is programmed in integrated circuit, it is possible to hold very much
The hardware circuit of this logical method flow process the most accomplished.
Controller can be implemented in any suitable manner, and such as, controller can take such as microprocessor or process
The computer of the computer readable program code (such as software or firmware) that device and storage can be performed by this (micro-) processor can
Read medium, gate, switch, special IC (Application Specific Integrated Circuit,
ASIC), programmable logic controller (PLC) and the form of embedding microcontroller, the example of controller includes but not limited to following microcontroller
Device: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, deposit
Memory controller is also implemented as a part for the control logic of memorizer.
It is also known in the art that in addition to realizing controller in pure computer readable program code mode, complete
Full controller can be made with gate, switch, special IC, able to programme by method step carries out programming in logic
The form of logic controller and embedding microcontroller etc. realizes identical function.The most this controller is considered one
Hardware component, and the structure in hardware component can also be considered as to include in it for the device realizing various function.Or
Even, can be considered as not only can being the software module of implementation method but also can be Hardware Subdivision by the device being used for realizing various function
Structure in part.
System, device, module or the unit that above-described embodiment illustrates, specifically can be realized by computer chip or entity,
Or realized by the product with certain function.
For convenience of description, it is divided into various unit to be respectively described with function when describing apparatus above.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during application.
As seen through the above description of the embodiments, those skilled in the art it can be understood that to the application can
The mode adding required general hardware platform by software realizes.Based on such understanding, the technical scheme essence of the application
On the part that in other words prior art contributed can embody with the form of software product, this computer software product
Can be stored in storage medium, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that a computer equipment
(can be personal computer, server, or the network equipment etc.) performs some of each embodiment of the application or embodiment
Method described in part.
Each embodiment in this specification all uses the mode gone forward one by one to describe, identical similar portion between each embodiment
Dividing and see mutually, what each embodiment stressed is the difference with other embodiments.Real especially for system
For executing example, owing to it is substantially similar to embodiment of the method, so describe is fairly simple, relevant part sees embodiment of the method
Part illustrate.
The application can be used in numerous general or special purpose computing system environments or configuration.Such as: personal computer, clothes
Business device computer, handheld device or portable set, laptop device, multicomputer system, system based on microprocessor, put
Top box, programmable consumer-elcetronics devices, network PC, minicomputer, mainframe computer, include any of the above system or equipment
Distributed computing environment etc..
The application can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizing the routine of particular abstract data type, program, object, group
Part, data structure etc..The application can also be put into practice in a distributed computing environment, in these distributed computing environment, by
The remote processing devices connected by communication network performs task.In a distributed computing environment, program module is permissible
It is positioned in the local and remote computer-readable storage medium of storage device.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have many deformation and
Change is without deviating from spirit herein, it is desirable to appended claim includes that these deformation and change are without deviating from the application's
Spirit.
Claims (13)
1. the method suppressing the interference signal of power information, is characterized in that, described method includes:
Isolating device obtains carrier signal by electric lines of force, and described carrier signal includes harmonic high frequency interference wave signal, Hz noise
The power information of the electrical equipment on signal, spike and described electric lines of force；
Described isolating device carries out isolation processing to described carrier signal, obtains the first signal, and described first signal includes high frequency
The power information of the electrical equipment on harmonic interference signals and described electric lines of force；
Described first signal is filtered processing by filter, obtains power information；
Described power information is exported by described filter by described electric lines of force.
Method the most according to claim 1, is characterized in that, described isolating device includes a coupling transformer and described coupling
Close transformer series an electric group and with the described electric group diode connected, wherein said electric group includes a coupling
Electric capacity couples, with described, the resistance that electric capacity is in parallel.
Method the most according to claim 2, is characterized in that, described diode is transient voltage suppressor, described coupling
The pressure voltage closing electric capacity is more than or equal to 1M Ω more than 300V, described resistance.
Method the most according to claim 1 and 2, is characterized in that, described filter is Butterworth filter or cuts ratio
Snow husband's wave filter.
Method the most according to claim 4, is characterized in that, described method also includes:
Signal receiving device receives and analyzes described power information.
Method the most according to claim 5, is characterized in that, described signal receiving device is spectrum analyzer.
7. suppress power information interference signal an equipment, it is characterized in that, described equipment include isolating device and described every
The filter being connected from device,
Wherein, described isolating device, for obtaining carrier signal by electric lines of force, described carrier signal is carried out isolation processing,
Obtaining the first signal, described carrier signal includes harmonic high frequency interference wave signal, power frequency interference signals, spike and described electricity
The power information of the electrical equipment in the line of force, described first signal includes on high-frequency harmonic interference signal and described electric lines of force
The power information of electrical equipment；
Described filter, for described first signal is filtered process, obtains power information, described power information is led to
Cross the output of described electric lines of force.
Equipment the most according to claim 7, is characterized in that, described isolating device includes a coupling transformer and described coupling
Close transformer series an electric group and with the described electric group diode connected, wherein said electric group includes a coupling
Electric capacity couples, with described, the resistance that electric capacity is in parallel.
Equipment the most according to claim 8, is characterized in that, described diode is transient voltage suppressor, described coupling
The pressure voltage closing electric capacity is more than or equal to 1M Ω more than 300V, described resistance.
Equipment the most according to claim 8 or claim 9, it is characterised in that described filter is Butterworth filter or cuts
Than snow husband's wave filter.
11. equipment according to claim 10, is characterized in that, described equipment also includes being connected with described filter
Signal receiving device, is used for receiving and analyze described power information.
12. equipment according to claim 11, is characterized in that, described signal receiving device is spectrum analyzer.
13. 1 kinds of power information acquisition systems, is characterized in that, described power information acquisition system include collecting device, main website with
And the equipment of the interference signal of the suppression power information as described in claim 7 to 12 any one,
Wherein, described collecting device, for gathering the power information of electrical equipment, and passes through electric lines of force by described power information
Transmission；
The equipment of the interference signal of described suppression power information includes: the filtering that isolating device is connected with described isolating device
Device,
Described isolating device, for obtaining carrier signal by described electric lines of force, carries out isolation processing to described carrier signal,
To the first signal, described carrier signal includes harmonic high frequency interference wave signal, power frequency interference signals, spike and described electric power
The power information of the electrical equipment on line, described first signal includes the use on high-frequency harmonic interference signal and described electric lines of force
The power information of electricity equipment；
Described filter, for described first signal is filtered process, obtains power information, described power information is led to
Cross the output of described electric lines of force to described main website.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107733469B (en) * | 2017-11-17 | 2023-10-20 | 联桥科技有限公司 | Anti-interference circuit for power line broadband carrier communication |
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| CN108183727B (en) * | 2017-12-08 | 2021-06-29 | 囯网河北省电力有限公司电力科学研究院 | Electricity consumption information interference signal filtering device, electricity consumption information acquisition system and method |
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Application publication date: 20161221 |