CN109802489A - A kind of solar energy photovoltaic panel TTC & DT Systems based on power line carrier - Google Patents
A kind of solar energy photovoltaic panel TTC & DT Systems based on power line carrier Download PDFInfo
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- CN109802489A CN109802489A CN201910077377.XA CN201910077377A CN109802489A CN 109802489 A CN109802489 A CN 109802489A CN 201910077377 A CN201910077377 A CN 201910077377A CN 109802489 A CN109802489 A CN 109802489A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
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Abstract
The invention discloses a kind of solar energy photovoltaic panel TTC & DT Systems based on power line carrier, including multiple solar panels, multiple far set unit, central processing unit, inverter, emergency stop switch；Multiple solar panels are serially connected into solar energy group, and solar energy group draws two leads of head and the tail, and two leads are respectively connected to the both ends of inverter；The corresponding solar panels of unit are each far set, unit is each far set and is connected with two conducting wires that corresponding solar panels are drawn；Central processing unit is connected to the both ends of inverter；Emergency stop switch is connected to central processing unit；It wherein far sets unit and measure voltage & current and control system of switching on or off electricity is carried out to corresponding solar panels.The present invention can reinforce the control of solar panels direct current output, reduce maintenance cost, increase safety.
Description
Technical field
The present invention relates to Communication Control Technology field, specially a kind of solar energy photovoltaic panel observing and controlling based on power line carrier
Communication system.
Background technique
Solar grid-connected electricity generation system is generally made of 20 pieces of solar panels, and monolithic works normally crest voltage and is about
48V, electric current are about 8A.It is about 1000V, electric current about 8A, i.e. peak value that 20 pieces of solar panels series connection, which work normally peak dc voltage,
Power is 8000W, this is the solar grid-connected and off-network of current mainstream in the world.
Grid-connected and off-network electricity generation system should widely be used on the building of global building, when building is sent out
Calamity of lighting a fire or other need the system to stop currently used when powering being to allow inverter to stop direct current turning to alternating current
It changes.It can be concluded that although solar electric power supply system stopped the output (inverter does not work) of alternating current from the system above,
But direct current electric output power still has.The direct current output that it is 8000W that peak power, which is up to, can be come greatly hidden to safety belt
Suffer from.When especially fire occurs for building, put out a fire with conductive substance (referring mainly to water), can be brought to fireman it is serious after
Fruit.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of solar energy based on power line carrier
Photovoltaic panel TTC & DT Systems reinforce the control of solar panels direct current output, reduce maintenance cost, increase safety.
To achieve the above object, the present invention provides the following technical scheme that a kind of solar energy based on power line carrier
It lies prostrate plate TTC & DT Systems, including multiple solar panels, multiple far sets unit, central processing unit, inverter, emergency stop switch；It is more
A solar panels are serially connected into solar energy group, and solar energy group draws two leads of head and the tail, and two leads are respectively connected to
The both ends of inverter；Each far set the corresponding solar panels of unit, it is each described far to set unit and draw with corresponding solar panels
Two conducting wires connection out；The central processing unit is connected to the both ends of inverter；The emergency stop switch is connected to central processing
Device；It wherein far sets unit and measure voltage & current and control system of switching on or off electricity is carried out to corresponding solar panels.
As a further improvement of the present invention, the central processing unit is connected with power carrier communication module, which carries
Wave communication module is additionally coupled to the both ends of inverter, the power carrier communication module by modulation /demodulation combination power line with it is more
It is a far to set unit communication；Power carrier communication module includes modem chip, power line carrier transmitting line, power line carrier
Receive circuit；The power line carrier transmitting line includes sending active filter circuit, sending passive filter circuit；The transmission
Active filter circuit is connected to modem chip, the transmission passive filter circuit be connected to send active filter circuit and with
Power line coupling；Power line carrier receives circuit connection to modem chip and sends passive filter circuit.
It as a further improvement of the present invention, further include a switching signal output circuit comprising an optocoupler U6 and metal-oxide-semiconductor
Q1；The anode of the light emitting diode of the optocoupler U6 is connected to central processing unit after being in series with resistance R19, the light emitting diode
Cathode ground connection；The collector of the phototriode of the optocoupler U6 is in series with after resistance R20 the first power supply, collector in fishplate bar
It is additionally coupled to the grid of metal-oxide-semiconductor Q1, the emitter ground connection of the phototriode；The source electrode and drain electrode of the metal-oxide-semiconductor Q1 exports
Switching signal controls external switch closing or opening.
As a further improvement of the present invention, the transmission active filter circuit includes multiple resistance and capacitor, wherein electricity
Second source in an end bracket of R9 is hindered, the other end is connected to the signal output end of modem chip, and the signal output end is also
It is sequentially connected in series the power amplification output end that modem chip is connected to after resistance R11, R10 and capacitor C10；The resistance R11,
R10 node interconnected is grounded after being connected with capacitor C11, and the capacitor C10 is sequentially connected in series electricity with the resistance R10 node connected
It is grounded after resistance R13 and capacitor C14；The power amplification output end of modem chip is grounded after being sequentially connected in series resistance R8, R6, institute
The both ends for stating resistance R6 are also parallel with capacitor C6, and the both ends the resistance R8 are parallel with capacitor C7；The resistance R13 and capacitor C14
The node of connection is connected to the power amplification electrode input end of modem chip, the node that the resistance R8 is connect with resistance R6
It is connected to the power amplification negative input of modem chip；The power amplification output end, which is connected to, sends passive filtering electricity
Road.
As a further improvement of the present invention, the transmission passive filter circuit include transformer T1, it is diode D3, multiple
Resistance and multiple capacitors, wherein one end ground connection of resistance R7, the other end are connected to the power amplification output end of modem chip；
The power amplification output end of modem chip is connected to after one end series capacitance C9 of the secondary coil of the transformer T1, separately
One end is connected to power line carrier and receives circuit；The both ends parallel resistance R12 of the secondary coil of the transformer T1；The transformation
The primary coil of device T1 one end corresponding with capacitor C9 is sequentially connected in series the fire-wire interfaces company after inductance L1, capacitor C8 with power line
It connects, the other end is connected to the zero line interface of power line；The anode of the diode D3 is connected to what capacitor C8 was connect with inductance L1
Node, cathode are connected to the zero line interface of power line.
As a further improvement of the present invention, the transmission passive filter circuit is also connected with the first clamp circuit；It is described
First clamp circuit includes diode D1, D2；The plus earth of the diode D1, cathode are connected to the function of modem chip
Rate amplifies output end；Second source in the cathode fishplate bar of the diode D2, anode are connected to the power amplification output of coremaking piece
End.
As a further improvement of the present invention, the reception passive circuit includes inductance L2, a termination of the inductance L2
Ground, the other end are connected to the primary coil of transformer T1；The one end of the inductance L2 with respect to transformer T1 is also in series with capacitor C12
It is connected to the signal receiving end of modem chip afterwards；The both ends of the inductance L2 are also parallel with capacitor C13；The modulation /demodulation
The signal receiving end of chip, which is also connected with, is connected with the second clamp circuit, and second clamp circuit includes diode D4, D5；It is described
The plus earth of diode D4, cathode are connected to the signal receiving end of modem chip, the cathode connection of the diode D5
Second source in plate, anode are connected to the signal receiving end of modem chip.
It as a further improvement of the present invention, further include feed circuit, the feed circuit includes the resistance being serially connected
R4,R5；One end of the resistance R4 is connected to the signal output end of modem chip, is grounded after other end series resistance R5,
The resistance R4 is in series with the signal feedback end that modem chip is connected to after capacitor C4 with the resistance R5 node connected.
It as a further improvement of the present invention, further include host computer telecommunication circuit, the host computer telecommunication circuit includes
One of RS485, RS422, RS232, Ethernet, bluetooth, WIFI or a variety of.
As a further improvement of the present invention, including following operational process:
S1, establish central processing unit with far set unit and connect；
S2, unit transmission data is far set to central processing unit；
S3, emergency stop order is judged whether there is, if it is, into S41, if it is not, then into S42；
S41, emergency stop mode is opened；Unit control solar panels are far set to disconnect；
S42, opening imformation acquisition mode；
S5, remote unit acquisition Data Concurrent of setting give central processing unit；
S6, abnormal data is judged whether there is, has and then enters S71, otherwise enter S72；
S71, remote unit control solar panels of setting disconnect, and report host computer；
The data received are sent to host computer by S72, central processing unit.
Beneficial effects of the present invention, can be to avoid a large amount of construction work, it is only necessary to will far set unit and central processing unit
It is linked into power line and signal transmitting and long-range control can be completed, so that project process is very fast, and construction cost is low, and
And if the failure of one of solar panels can disconnect association in time, entire electricity-generating circuit is protected, failure is avoided the occurrence of
Solar panels chain reaction entire circuit is damaged, and then save maintenance cost and increase safety.
Detailed description of the invention
Fig. 1 is that total system frame of the invention shows that structure is intended to；
Fig. 2 is transmission active filter circuit structural schematic diagram of the invention；
Fig. 3 is transmission passive filter circuit structural schematic diagram of the invention；
Fig. 4 is switching signal output circuit electrical block diagram of the present invention；
Fig. 5 is workflow schematic diagram of the present invention.
Drawing reference numeral: 1, solar panels；2, unit is far set；3, central processing unit；4, inverter；5, emergency stop switch；6, electric
Power carrier communication module；61, modem chip；62, active filter circuit is sent；63, passive filter circuit is sent；64, electric
Line of force carrier wave receives circuit；7, switching signal output circuit；8, feed circuit.
Specific embodiment
The present invention is described in further detail below in conjunction with embodiment given by attached drawing.
Referring to Fig.1 shown in -5, a kind of solar energy photovoltaic panel TTC & DT Systems based on power line carrier of the present embodiment,
Including multiple solar panels 1, multiple far set unit 2, central processing unit 3, inverter 4, emergency stop switch 5；Multiple 1 phases of solar panels
It is mutually connected into solar energy group, solar energy group draws two leads of head and the tail, and two leads are respectively connected to the both ends of inverter 4；Often
It is a far to set the corresponding solar panels 1 of unit 2, it each far sets unit 2 and connects with two conducting wires that corresponding solar panels 1 are drawn
It connects；Central processing unit 3 is connected to the both ends of inverter 4；Emergency stop switch 5 is connected to central processing unit 3；It is right wherein far to set unit 2
Corresponding solar panels 1 carry out measure voltage & current and control system of switching on or off electricity.
Wherein, central processing unit 3 is connected with power carrier communication module 6, which is additionally coupled to inverse
Become the both ends of device 4, power carrier communication module 6 remote set unit 2 and communicated by modulation /demodulation combination power line with multiple；Electric power carries
Wave communication module 6 includes modem chip 61, power line carrier transmitting line, power line carrier reception circuit 64；Power line
Carrier wave transmitting line includes sending active filter circuit 62, sending passive filter circuit 63；Active filter circuit 62 is sent to connect
To modem chip 61, sends passive filter circuit 63 and be connected to transmission active filter circuit 62 and coupled with power line；Electricity
Line of force carrier wave receives circuit 64 and is connected to modem chip 61 and sends passive filter circuit 63.
It is identical as central processing unit 3 wherein far to set unit 2, is respectively provided with power carrier communication module 6, thus signal is carried out
Modulation, by power line carrier transmission to central processing unit 3, while thus central processing unit 3 also carries out demodulation acquisition to signal
Far set the signal of the transmission of unit 2.Likewise, central processing unit 3 can also thus reverse process, to far setting the transmission control of unit 2
Signal.
Before use, this system is incorporated in existing solar grid-connected electricity generation system, wherein far set unit 2 pass through it is adjacent
The relay module accessed between solar panels 1 interconnected carries out control system of switching on or off electricity, the plate of configuration to each solar panels 1
Second source is respectively 9V and 5V in interior first power supply and plate, in specific embodiment, in plate second in the first power supply and plate
Power supply is chosen as different voltage level power supplies, is only used as a kind of power supply code name because working as herein.
Through the above technical solutions, its specific workflow is, after opening solar power generation, between solar panels 1
Electric current is generated, the transmission of electric current is carried out by multiple concatenated solar panels 1, wherein electric current is followed by each solar panels 1
And enter eventually into and converted in inverter 4, industrial-frequency alternating current is exported into utility grid；In the process, each far to set
Unit 2 constantly carries out voltage and current acquisition to corresponding solar panels 1, and is modulated by power carrier communication module 6,
And combine power line carry out electric force carrier transmission, it is more specific for, far set Acquisition Circuit collection voltages and the electricity in unit 2
Signal modulation is carried out by modem chip 61 after the numerical value of stream, is then passed sequentially through and is sent active filter circuit 62, sends
Passive filter circuit 63 couples with power line thereafter through passive filter circuit 63 is sent, signal is carried by power line
Wave transmission, signal pass through transmission passive filter circuit 63 of the power line transmission to the central processing connecting with power line, power line
Carrier wave receives circuit 64 and is connected in transmission passive filter circuit 63, obtains modulation letter from transmission passive filter circuit 63 at this time
Number, which enters demodulation of advancing in modem chip 61, and then is far set the acquisition letter that unit 2 is actually sent
Number, central processing unit 3 is far set the acquisition signal of unit 2 at this time, carries out analyzing and determining that this far sets unit 2 to the acquisition signal
Whether the corresponding work of solar panels 1 has exception；Same reversed process is that central processing unit 3 sends control signal to correspondence
Far set 2 process of unit, be specifically, central processing unit 3 send control signal be modulated to modem chip 61, and
It is transmitted by sending active filter circuit 62, sending passive filter circuit 63, and will by sending passive filter circuit 63
Signal, which is coupled on power line, carries out carrier-wave transmission；It far sets after unit 2 receives the modulated signal and is demodulated to obtain control letter
Number, judge that current corresponding 1 on-off of solar panels is electrically operated by control signal.
Signal transmission is wherein carried out by power carrier, the expense of signal wire can be saved, avoid the trouble of wiring,
The expense that remote radio communication can be reduced, the electric force carrier transmission used compared to the mode of both signals transmission, this programme
Can the transmission of more convenient signal, and it is at low cost, as long as this programme can be carried out cloth in the power supply line of solar energy group
It sets and controls, do not weakened or be routed cumbersome influenced on signal by wall；The central processing unit 3 of setting can allow whole system
Intelligentized control method can in real time be monitored solar grid-connected electricity generation system, analyze, judge；The emergency stop switch 5 of setting is convenient for
Manual operation is operated by emergency stop switch 5 to far setting unit 2 in the case where specific factor needs urgent open circuit；Setting
Inverter 4, facilitate the direct current for generating solar panels 1 to be converted into industrial-frequency alternating current and be transported in utility grid；It is arranged
The signal that carrier wave is carried out after modulation can sufficiently be filtered by sending active filter circuit 62, transmission passive filter circuit 63,
It makes signal more stable, avoids being distorted；Power carrier, which receives circuit, can receive the carrier signal on power line, and be transferred to tune
Demodulation chip 61 processed is demodulated, and signal is allowed successfully to carry out transmitted in both directions.
It can be to avoid a large amount of construction work by above-mentioned access way, it is only necessary to will far set unit 2 and central processing unit 3
It is linked into power line and signal transmitting and long-range control can be completed, so that project process is very fast, and construction cost is low, and
And if the failure of one of solar panels 1 can disconnect association in time, entire electricity-generating circuit is protected, failure is avoided the occurrence of
1 chain reaction of solar panels entire circuit is damaged, and then save maintenance cost and increase safety.
Further include a switching signal output circuit 7 as an improved specific embodiment comprising an optocoupler U6 and
Metal-oxide-semiconductor Q1；The anode of the light emitting diode of the optocoupler U6 is connected to central processing unit 3 after being in series with resistance R19, this luminous two
The cathode of pole pipe is grounded；The collector of the phototriode of the optocoupler U6 is in series with after resistance R20 the first power supply in fishplate bar, should
Collector is additionally coupled to the grid of metal-oxide-semiconductor Q1, the emitter ground connection of the phototriode；The source electrode of the metal-oxide-semiconductor Q1 and leakage
Pole output switching signal controls external switch closing or opening.
Through the above technical solutions, central processing unit 3 sends switch letter when external switch is closed or is disconnected
Number give optocoupler U6, the lumination of light emitting diode in optocoupler U6, allows phototriode to be connected at this time, at this time the collection on phototriode
Electrode high level, which is grounded, to be dragged down, and the collector of phototriode generates level jump at this time, from there through the electricity of switching signal
Flat variation can allow the level of the collector of phototriode to generate corresponding variation, and then control metal-oxide-semiconductor Q1 to external switch
Control, metal-oxide-semiconductor Q2 compared to there is for triode smaller power consumption, stronger driving force and be voltage controlled element,
It is more stable to the control of external switch.This programme can expand system, facilitate and provide additional control function, and
The optocoupler U6 of use carries out signal coupling, has higher safety, the failure of external switch is avoided to cause central processing unit 3
Damage.
As an improved specific embodiment, the transmission active filter circuit 62 includes multiple resistance and capacitor,
Second source in an end bracket of middle resistance R9, the other end are connected to the signal output end of modem chip 61, and the signal is defeated
Outlet is also sequentially connected in series the power amplification output end that modem chip 61 is connected to after resistance R11, R10 and capacitor C10；It is described
Resistance R11, R10 node interconnected are grounded after being connected with capacitor C11, the node that the capacitor C10 is connected with resistance R10 according to
It is grounded after secondary series resistance R13 and capacitor C14；The power amplification output end of modem chip 61 be sequentially connected in series resistance R8,
It is grounded after R6, the both ends of the resistance R6 are also parallel with capacitor C6, and the both ends the resistance R8 are parallel with capacitor C7；The resistance
R13 is connected to the power amplification electrode input end of modem chip 61, the resistance R8 and electricity with the capacitor C14 node connected
The node of resistance R6 connection is connected to the power amplification negative input of modem chip 61；The power amplification output end connection
To transmission passive filter circuit 63.
Through the above technical solutions, the modulated signal of output flows through after modem chip 61 is modulated signal
Resistance R11 and R10, resistance R9 pulls up the high level part of signal as pull-up resistor at this time, can be improved signal electricity
Flat stability carries out current limliting by resistance R11 and R10, can increase the stability of circuit, avoid the excessive shadow of electric current in circuit
Sound burns element；Capacitor C11 carries out capacitor filtering to modulated signal, can filter clutter；Hereafter modulated signal also passes through resistance
It is entered after R13 in modem chip 61, High frequency filter is also carried out by capacitor C14 at this time, further increases and is transported to tune
The stability of power amplification electrode input end in demodulation chip 61 processed, wherein resistance R13 cooperates capacitor C14 to improve filter effect,
RC filtering is constituted with resistance R10, while capacitor C11 and resistance R11 constitutes RC filtering, and then carries out low-pass filtering；Signal passes through
Capacitor C10 coupling is continued through after resistance R10, hereafter by resistance R8 and R6 partial pressure ground connection, the node of partial pressure is put with power
Big negative input connection, to be inputted as reference level；It is carried out by the amplifier that modem chip 61 is internally integrated active
Filtering, increases the stability of signal, while increasing the output power of signal, enhances the intensity of signal, make its subsequent transmission fidelity
Effect is more preferable；Capacitor C7 and C6 set in addition equally constitutes low-pass filtering, improves filter effect, it is ensured that signal quality, cooperation
C10 constitutes bandpass filtering, may filter that the clutter of low frequency and high frequency at this time, makes signal purer.
As an improved specific embodiment, send passive filter circuit 63 include transformer T1, it is diode D3, multiple
Resistance and multiple capacitors, wherein one end ground connection of resistance R7, the other end are connected to the power amplification output of modem chip 61
End；The power amplification output end of modem chip 61 is connected to after one end series capacitance C9 of the secondary coil of transformer T1,
The other end is connected to power line carrier and receives circuit 64；The both ends parallel resistance R12 of the secondary coil of transformer T1；Transformer T1
Primary coil one end corresponding with capacitor C9 be sequentially connected in series inductance L1, capacitor C8 after connect with the fire-wire interfaces of power line,
The other end is connected to the zero line interface of power line；The anode of diode group D3 is connected to the node that capacitor C8 is connect with inductance L1,
Cathode is connected to the zero line interface of power line.
Through the above technical solutions, the signal of power amplification output end output after capacitor C9 coupling, filters out direct current letter
Number, and it is passed into the secondary of transformer T1, it is coupled at this time by transformer T1, the primary coil part of transformer T1 generates exchange
Electricity is linked into power line after carrying out LC filtering by inductance L1 and capacitor C8, and the diode group D3 being provided with uses two
Diode is constituted, and the cathode of two diodes is connected with each other, and positive one end is connected to the node that capacitor C8 is connect with inductance L1, separately
One end is connected to the zero line interface of power line；It is possible thereby to absorb surge, play the role of Anti-surging.
As an improved specific embodiment, the transmission passive filter circuit 63 is also connected with the first clamp circuit；
First clamp circuit includes diode D1, D2；The plus earth of the diode D1, cathode are connected to modem chip
61 power amplification output end；Second source in the cathode fishplate bar of the diode D2, the power that anode is connected to coremaking piece are put
Big output end.
Through the above technical solutions, carrying out clamper to the signal that power amplification output end exports by diode D1, D2, mention
The job stability of high entire circuit.
As an improved specific embodiment, the reception passive circuit includes inductance L2, one end of the inductance L2
Ground connection, the other end are connected to the primary coil of transformer T1；The inductance L2 is also in series with capacitor with respect to one end of transformer T1
The signal receiving end of modem chip 61 is connected to after C12；The both ends of the inductance L2 are also parallel with capacitor C13；The tune
The signal receiving end of demodulation chip 61 processed, which is also connected with, is connected with the second clamp circuit, and second clamp circuit includes diode
D4,D5；The plus earth of the diode D4, cathode are connected to the signal receiving end of modem chip 61, the diode
The cathode of D5 is connected to second source in plate, and anode is connected to the signal receiving end of modem chip 61.
Through the above technical solutions, passing through when transmission passive filter circuit 63 receives the carrier signal on power line
The LC of capacitor C8 and inductance L1 filtering, and coupled transfer is carried out by transformer T1, signal passes through inductance L2, capacitor C13 at this time
Antiresonant circuit is constituted with resistance R12, by adjusting the numerical value of resistance R12 and inductance L2, adjustable resonant frequency allows letter
It is number more gentle, it can be adjusted according to specific requirements in specific circuit, additionally by diode D4, D5 to power amplification
The signal of output end output carries out clamper, improves the job stability of entire circuit.
It further include feed circuit 8 as an improved specific embodiment, the feed circuit 8 includes being serially connected
Resistance R4, R5；One end of the resistance R4 is connected to the signal output end of modem chip 61, after other end series resistance R5
Ground connection, the resistance R4 are in series with the signal feedback that modem chip 61 is connected to after capacitor C4 with the resistance R5 node connected
End.
Through the above technical solutions, after the signal that the signal output end of modem chip 61 exports is coupled by partial pressure
The signal feedback end for entering modem chip 61, detects the signal of output, to being adjusted, so that signal
The signal of output end output can be more stable, and can automatically adjust.
It further include host computer telecommunication circuit as an improved specific embodiment, the host computer telecommunication circuit includes
One of RS485, RS422, RS232, Ethernet, bluetooth, WIFI or a variety of.Facilitate and data are reported into host computer, carries out
Summarize and reports.It allows user to have intuitive monitoring data, conveniently manually performs relevant operation.
As an improved specific embodiment, including following operational process:
S1, establish central processing unit 3 with far set unit 2 and connect；
S2, the transmission data of unit 2 is far set to central processing unit 3；
S3, emergency stop order is judged whether there is, if it is, into S41, if it is not, then into S42；
S41, emergency stop mode is opened；The control solar panels 1 of unit 2 are far set to disconnect；
S42, opening imformation acquisition mode；
S5, the remote acquisition Data Concurrent of unit 2 of setting give central processing unit 3；
S6, abnormal data is judged whether there is, has and then enters S71, otherwise enter S72；
S71, the remote control solar panels 1 of unit 2 of setting are disconnected, and are reported to host computer；
The data received are sent to host computer by S72, central processing unit 3.
Through the above technical solutions, first user use this system when, first by S1 central processing unit 3 and far set unit 2 into
Row connection, can there is the medium being in communication with each other；Then it sends far to set unit 2 and power on by S2 and confirms that data are sent to center
Processor 3；S3 judges whether there is emergency stop order at this time, if there is emergency stop order, then enters S41 and opens emergency stop mode, pass through
The mode for far setting the control of unit 2 disconnects the outlet line of solar panels 1, it is ensured that does not have faulty solar panels in whole route
1 output electric current；It can be normally carried out if without emergency stop order to S42, opening imformation acquisition mode, carries out normal electricity at this time
Current voltage acquires, and collected voltage and current data are sent to central processing unit 3 by S5, at this time central processing unit 3
Abnormal data (its judgment basis is whether voltage and current numerical value is normal) is judged whether there is, if there is exception, then it is logical to enter S71
Unit 2 is set too far and controls the disconnection output of solar panels 1, and is reported an error to host computer, the data that otherwise central processing unit 3 will receive
Be sent to host computer, thus facilitate host computer record report an error reason and report an error the time and report an error far set unit 2, can accelerate
Administrative staff can allow the management automation and orderly of whole system to the investigation and maintenance of solar panels 1, by above-mentioned process.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of solar energy photovoltaic panel TTC & DT Systems based on power line carrier, which is characterized in that including multiple solar energy
Plate (1) multiple far sets unit (2), central processing unit (3), inverter (4), emergency stop switch (5)；Multiple solar panels (1)
It is serially connected into solar energy group, solar energy group draws two leads of head and the tail, and two leads are respectively connected to the two of inverter (4)
End；Each far set unit (2) corresponding solar panels (1), it is each described far to set unit (2) and corresponding solar panels (1)
The two conducting wires connection drawn；The central processing unit (3) is connected to the both ends of inverter (4)；Emergency stop switch (5) connection
To central processing unit (3)；It is automatically controlled to corresponding solar panels (1) progress measure voltage & current and on-off wherein far to set unit (2)
System.
2. the solar energy photovoltaic panel TTC & DT Systems according to claim 1 based on power line carrier, which is characterized in that
The central processing unit (3) is connected with power carrier communication module (6), which is additionally coupled to inversion
The both ends of device (4), the power carrier communication module (6) are led to by modulation /demodulation combination power line and multiple far set unit (2)
Letter；Power carrier communication module (6) includes modem chip (61), power line carrier transmitting line, power line carrier reception
Circuit (64)；The modem chip (61) connect with central processing unit (3)；The power line carrier transmitting line includes hair
It send active filter circuit (62), send passive filter circuit (63)；The transmission active filter circuit (62) is connected to modulatedemodulate
Aligning piece (61), the transmission passive filter circuit (63), which is connected to, to be sent active filter circuit (62) and couples with power line；
Power line carrier receives circuit (64) and is connected to modem chip (61) and sends passive filter circuit (63).
3. the solar energy photovoltaic panel TTC & DT Systems according to claim 2 based on power line carrier, which is characterized in that
It further include a switching signal output circuit (7) comprising an optocoupler U6 and metal-oxide-semiconductor Q1；The light emitting diode of the optocoupler U6
Anode is connected to central processing unit (3) after being in series with resistance R19, the cathode ground connection of the light emitting diode；The light of the optocoupler U6
The collector of quick triode is in series with after resistance R20 that the first power supply, the collector are additionally coupled to the grid of metal-oxide-semiconductor Q1 in fishplate bar,
The emitter of the phototriode is grounded；The source electrode and drain electrode output switching signal of the metal-oxide-semiconductor Q1, control external switch close
It closes or disconnects.
4. the solar energy photovoltaic panel TTC & DT Systems according to claim 1 based on power line carrier, which is characterized in that
The transmission active filter circuit (62) includes multiple resistance and capacitor, wherein second source in an end bracket of resistance R9, separately
One end is connected to the signal output end of modem chip (61), which is also sequentially connected in series resistance R11, R10 and electricity
The power amplification output end of modem chip (61) is connected to after appearance C10；Resistance R11, R10 node interconnected connects
It is grounded after being connected to capacitor C11, the capacitor C10 is sequentially connected in series resistance R13 with the resistance R10 node connected and capacitor C14 is followed by
Ground；The power amplification output end of modem chip (61) is grounded after being sequentially connected in series resistance R8, R6, the both ends of the resistance R6
It is also parallel with capacitor C6, the both ends the resistance R8 are parallel with capacitor C7；The node connection that the resistance R13 is connected with capacitor C14
To the power amplification electrode input end of modem chip (61), the resistance R8 is connected to modulation with the resistance R6 node connecting
The power amplification negative input of demodulation chip (61)；The power amplification output end is connected to transmission passive filter circuit
(63)。
5. the solar energy photovoltaic panel TTC & DT Systems according to claim 4 based on power line carrier, which is characterized in that
The transmission passive filter circuit (63) includes transformer T1, diode D3, multiple resistance and multiple capacitors, wherein resistance R7
One end ground connection, the other end are connected to the power amplification output end of modem chip (61)；The secondary coil of the transformer T1
One end series capacitance C9 after be connected to the power amplification output end of modem chip (61), the other end is connected to power line load
Wave receives circuit (64)；The both ends parallel resistance R12 of the secondary coil of the transformer T1；The primary coil of the transformer T1
One end corresponding with capacitor C9 is connect after being sequentially connected in series inductance L1, capacitor C8 with the fire-wire interfaces of power line, other end connection
To the zero line interface of power line；The anode of the diode D3 is connected to the node that capacitor C8 is connect with inductance L1, cathode connection
To the zero line interface of power line.
6. the solar energy photovoltaic panel TTC & DT Systems according to claim 5 based on power line carrier, which is characterized in that
The transmission passive filter circuit (63) is also connected with the first clamp circuit；First clamp circuit includes diode D1, D2；
The plus earth of the diode D1, cathode are connected to the power amplification output end of modem chip (61)；The diode
Second source in the cathode fishplate bar of D2, anode are connected to the power amplification output end of coremaking piece.
7. the solar energy photovoltaic panel TTC & DT Systems according to claim 5 based on power line carrier, which is characterized in that
The reception passive circuit includes inductance L2, and one end ground connection of the inductance L2, the other end is connected to the primary line of transformer T1
Circle；The one end of the inductance L2 with respect to transformer T1 is also in series with the signal that modem chip (61) are connected to after capacitor C12
Receiving end；The both ends of the inductance L2 are also parallel with capacitor C13；The signal receiving end of the modem chip (61) is also connected with
It is connected with the second clamp circuit, second clamp circuit includes diode D4, D5；The plus earth of the diode D4 is born
Pole is connected to the signal receiving end of modem chip (61), and the cathode of the diode D5 is connected to second source in plate, just
Pole is connected to the signal receiving end of modem chip (61).
8. the solar energy photovoltaic panel TTC & DT Systems according to claim 4 based on power line carrier, which is characterized in that
It further include feed circuit (8), the feed circuit (8) includes resistance R4, the R5 being serially connected；One end of the resistance R4 connects
It to the signal output end of modem chip (61), is grounded after other end series resistance R5, the resistance R4 is connected with resistance R5
Node be in series with the signal feedback end that modem chip (61) is connected to after capacitor C4.
9. the solar energy photovoltaic panel TTC & DT Systems according to claim 1 based on power line carrier, which is characterized in that
It further include host computer telecommunication circuit, the host computer telecommunication circuit includes RS485, RS422, RS232, Ethernet, bluetooth, WIFI
One of or it is a variety of.
10. the solar energy photovoltaic panel TTC & DT Systems according to claim 1 based on power line carrier, feature exist
In, including following operational process:
S1, establish central processing unit (3) with far set unit (2) and connect；
S2, far set unit (2) send data give central processing unit (3)；
S3, emergency stop order is judged whether there is, if it is, into S41, if it is not, then into S42；
S41, emergency stop mode is opened；Unit (2) control solar panels (1) is far set to disconnect；
S42, opening imformation acquisition mode；
S5, far set unit (2) acquisition Data Concurrent give central processing unit (3)；
S6, abnormal data is judged whether there is, has and then enters S71, otherwise enter S72；
S71, it far sets unit (2) control solar panels (1) and disconnects, and report host computer；
The data received are sent to host computer by S72, central processing unit (3).
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| CN201910077377.XA CN109802489B (en) | 2019-01-25 | 2019-01-25 | Solar photovoltaic panel measurement and control communication system based on power line carrier |
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| CN109802489B (en) | 2020-08-28 |
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