CN102681500A - System and method for solar intelligent monitoring - Google Patents
System and method for solar intelligent monitoring Download PDFInfo
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- CN102681500A CN102681500A CN201110063704XA CN201110063704A CN102681500A CN 102681500 A CN102681500 A CN 102681500A CN 201110063704X A CN201110063704X A CN 201110063704XA CN 201110063704 A CN201110063704 A CN 201110063704A CN 102681500 A CN102681500 A CN 102681500A
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Abstract
The invention discloses a system and a method for solar intelligent monitoring. The system comprises solar monitoring small systems, communication relay expansion devices, a communication relay device and a monitoring main machine. The monitoring main machine is in communication connection with the communication relay device. The communication relay device is in communication connection with a plurality of communication relay expansion devices. The plurality of communication relay expansion devices are connected with the communication relay device in a hand-in-hand bus connection method. Each communication relay expansion device is respectively in communication connection with a plurality of solar monitoring small systems. The communication relay device comprises two relay chips in image connection. The system and the method for the solar intelligent monitoring achieves expansion of the scale of the existing solar power generation monitoring system, limit of traditional 256 system devices is broken, device recognition is expanded to 256n devices, and n is the number of relay layers. Simultaneously, data transmission distance breaks the limit of 1200 meters of 485 transmission and is increased to more than m times of 1200 meters, and m is the level of the communication relay device.
Description
Technical field
The invention belongs to the solar energy intelligent technical field of power generation, relate to a kind of solar energy intelligent supervisory system and method for supervising.
Background technology
At present, along with the increase of solar photovoltaic power plant scale and the continuous expansion of range of application, the Design of Monitoring and Control System of solar photovoltaic power plant is also more and more paid attention to by the system designer, and monitoring has become a key factor of photovoltaic plant reliability service.But the characteristics of existing solar power system self have determined solar photovoltaic power plant monitoring and communication function can't realize large-scale application, have greatly limited the generating scale and the range of application of solar power station.
Summary of the invention
Technical matters to be solved by this invention is: a kind of solar energy intelligent supervisory system is provided, and this system can realize extensive telecommunication;
In addition, the present invention also provides a kind of solar energy intelligent method for supervising.
For solving the problems of the technologies described above, the present invention adopts following technical scheme.
A kind of solar energy intelligent supervisory system comprises sun power monitoring mini system, communication relaying expansion equipment, communication relay set and monitoring host computer; Said monitoring host computer is communicated by letter with communication relay set and is linked to each other; Said communication relay set is communicated by letter with several communication relaying expansion equipments and is connected, and said several communication relaying expansion equipments link to each other with the communication trunking with formula bus connecting mode hand in hand; Each communication relaying expansion equipment is all communicated by letter with several sun power monitoring mini systems and is linked to each other; Said communication trunking comprises the repeater chip that 2 mirror images connect.
As a kind of preferred version of the present invention, said communication trunking adopts 485 communication patterns; Said repeater chip is 485 communication chips; Each 485 communication chip is all realized relay and control through 1 triode; Wherein the DE of 485 communication chips links to each other with the collector of triode with the RE port; The GND port of 485 communication chips and the grounded emitter of triode, the DI port of 485 communication chips links to each other with the base stage of triode through resistance; The DI port of one 485 communication chip links to each other with the RO port of another 485 communication chip through resistance.
As another kind of preferred version of the present invention, each sun power monitoring mini system includes 1 solar energy intelligent header box and several sun power signal collecting devices; Each sun power signal collecting device includes sun power pole plate and plate signal collector; Said plate signal collector links to each other with the sun power pole plate, in order to gather the signal message of sun power pole plate; Said several sun power signal collecting devices all link to each other with said solar energy intelligent header box, in order to the information that collects is aggregated in the solar energy intelligent header box.
As another preferred version of the present invention, said plate signal collector comprises signal processing chip, and wherein signal processing chip is a single-chip microcomputer; Single-chip microcomputer is handled the temperature signal that collects through the TS port; Through the VSL port voltage signal that collects is handled; Through the VI81 port current signal that collects is handled, and the signal after will handling is given said solar energy intelligent header box through RXD, TXD and RTS port transmission.
As another preferred version of the present invention; Said plate signal collector comprises temperature collection circuit; Said temperature collection circuit comprises a temperature sensor, and first port of said temperature sensor connects VSS voltage, and second port of temperature sensor connects the TS port of signal processing chip; The 3rd port of temperature sensor connects+5V voltage, and second port of said temperature sensor connects+5V voltage through resistance.
Said plate signal collector also comprises the voltage signal acquisition circuit; Said voltage signal acquisition circuit comprises one in order to realize the Hall type voltage acquisition device of voltage transitions isolation; First port of said Hall type voltage acquisition device connects the solar panel positive pole; The 3rd port of said Hall type voltage acquisition device connects the solar panel negative pole; The 4th port of said Hall type voltage acquisition device connects+12V voltage, and the 6th port of said Hall type voltage acquisition device connects VSS voltage, and the 8th port of said Hall type voltage acquisition device connects the VSL port of signal processing chip through resistance.
Said plate signal collector also comprises the current signal Acquisition Circuit; Said current signal Acquisition Circuit comprises a Hall type current acquisition device in order to the current conversion isolation; The 1st, 2,3,4 ports of said Hall type current acquisition device connect the solar panel negative pole; The 5th, 6,7,8 ports of said Hall type current acquisition device meet sun power electric current input port SL8-, and the 11st port of said Hall type current acquisition device connects the VI8 port of signal processing chip.
As another preferred version of the present invention, said intelligent monitor system also comprises the lightning protection supervisory circuit of sun power pole plate, and said lightning protection supervisory circuit comprises lightning protection circuit and lightning protection fault signal circuit;
Said lightning protection circuit comprises the piezoresister of 2 series connection, and said piezoresister is band protection votage limit type piezoresister; One of them piezoresister passes through JP1 is connected the sun power pole plate with JP2 positive pole, and another piezoresister passes through JP3 is connected the sun power pole plate with JP4 negative pole, and the piezoresister of series connection is used to clamp down on the surge voltage of sun power pole plate; Connect a gas-discharge tube between the piezoresister of two series connection, said gas-discharge tube is the switching mode gas-discharge tube; The gas-discharge tube thermal resistor of connecting, said thermal resistor inserts the earth, in order to lightning current is released;
Said lightning protection fault signal circuit is a contact weakening circuit, comprises and+first resistance that 5V voltage links to each other, and second resistance of connecting with first resistance, with the electric capacity that second resistance is connected, the other end of electric capacity links to each other with VSS voltage; The connected node of first resistance and second resistance is the FA input end, and the node that second resistance is connected with electric capacity is the FA1 output terminal.
A kind of solar energy intelligent method for supervising may further comprise the steps:
As a kind of preferred version of the present invention, said communication trunking comprises the repeater chip that 2 mirror images connect, and said repeater chip is 485 communication chips; Each 485 communication chip is all realized relay and control through 1 triode; Wherein the DE of 485 communication chips links to each other with the collector of triode with the RE port; The GND port of 485 communication chips and the grounded emitter of triode, the DI port of 485 communication chips links to each other with the base stage of triode through resistance; The DI port of one 485 communication chip links to each other with the RO port of another 485 communication chip through resistance.
As another kind of preferred version of the present invention; Said communication relaying expansion equipment has 2 independently RS485 interfaces; An interface is connected with said solar energy intelligent header box; Be responsible for collecting the information of solar energy intelligent header box, another interface is connected with said communication relay set, is responsible for sending the information of collecting to communication relay set.
Beneficial effect of the present invention is: the present invention has realized the scale of existing solar electrical energy generation supervisory system is expanded, and has broken through the restriction of 256 traditional system equipments, and recognition of devices is extended to 256
nPlatform, n are the number of plies of relaying; Make data transmission distance break through 485 simultaneously and transmit 1200 meters of the limit, bring up to 1200 meters m doubly more than, m is the progression of communication trunking.
Description of drawings
Fig. 1 is the structural representation of solar energy intelligent supervisory system of the present invention;
Fig. 2 is the principle schematic of communication relaying expansion equipment of the present invention;
Fig. 3 is the principle schematic of 485 communication lines of the present invention;
Fig. 4 is the principle schematic of communication trunking of the present invention;
Fig. 5 is the governor circuit schematic diagram of single-chip microcomputer of the present invention;
Fig. 6 is the circuit theory diagrams of temperature sampling equipment of the present invention;
Fig. 7 is the circuit theory diagrams of voltage acquisition equipment of the present invention;
Fig. 8 is the circuit theory diagrams of current acquisition equipment of the present invention;
Fig. 9 is the lightning protection circuit schematic diagram of sun power pole plate of the present invention;
Figure 10 is the lightning protection fault signal circuit figure of sun power pole plate of the present invention.
The primary clustering symbol description:
1,485 repeater chips; 2, triode;
3,485 communication chips; 4, gas-discharge tube;
5, Transient Suppression Diode; 6, optic coupling element;
7, signal processing chip; 8, temperature sensor;
9, voltage acquisition element; 10, current acquisition element;
11, piezoresister; 12, AC-DC converter;
13, thermal resistor.
Embodiment
The present invention is in order to overcome the deficiency of prior art; A kind of solar energy intelligent supervisory system and method for supervising are proposed; This method can not only be monitored the normal operation of solar energy system, can also report to the police to the problems and shortcomings that exist in the solar energy system, and the scale of existing solar electrical energy generation supervisory system is expanded and scale; Break through the restriction of 256 traditional system equipments, recognition of devices is extended to 256
nPlatform, wherein n is the relaying number of plies; Simultaneously data transmission distance is broken through 485 and transmit 1200 meters of the limit.
Do further explain below in conjunction with the accompanying drawing specific embodiments of the invention.
Embodiment one
Present embodiment provides a kind of solar energy intelligent supervisory system, and is as shown in Figure 1, comprises several sun power monitoring mini systems, communication relaying expansion equipment, communication relay set and monitoring host computer; Said monitoring host computer is communicated by letter with communication relay set and is linked to each other; A plurality of communication relaying expansion equipments link to each other with communication relay set with formula bus connecting mode hand in hand through connection cable, and each communication relaying expansion equipment is all monitored mini systems with several sun power and communicated by letter and link to each other.Communication pattern in the present embodiment is RS485 communication pattern or CAN bus communication pattern.
[sun power monitoring mini system]
Each sun power monitoring mini system includes 1 solar energy intelligent header box and several sun power signal collecting devices; Each sun power signal collecting device includes sun power pole plate and plate signal collector; Said plate signal collector links to each other with the sun power pole plate, in order to information such as the voltage of gathering the sun power pole plate, electric current, temperature, lightning protection fault-signals; Said several sun power signal collecting devices all link to each other with said solar energy intelligent header box, in order to the information that collects is aggregated in the solar energy intelligent header box.
Said plate signal collector is in order to gather the signal of sun power pole plate; This plate signal collector adopts singlechip chip, MEGA32 process chip, dsp chip or fpga chip; Have voltage, electric current and temperature collection function, also have sun power pole plate lightning protection and lightning protection circuit fault-signal acquisition function.
Fig. 5 is the governor circuit schematic diagram of single-chip microcomputer; Comprise signal processing chip and peripheral circuit thereof; Wherein device 7 is a signal processing chip, can adopt Mega32 process chip, dsp chip or fpga chip, through the TS interface temperature signal that collects is handled; Through the VSL interface voltage signal that collects is handled, the current signal that collects is handled through the VI81 interface.Select the Mega series monolithic in the present embodiment for use; Mega series monolithic powerful; Support the identification work of treatment of multi-channel A sampling, can effectively information be optimized processing, for guaranteeing conversion accuracy; Single-chip microcomputer adopts the high precision external crystal-controlled oscillation to carry out the frequency adjustment of single-chip microcomputer, to guarantee the accuracy of internal calculation.Signal after will handling is then given the RS485 communicating equipment circuit through RXD, TXD and RTS port transmission.
Fig. 6 is the scene temperature Acquisition Circuit, and said temperature collection circuit comprises a temperature sensor 8, and that this temperature sensor 8 uses is DS18B20, and this sensor circuit is simple in structure, and high precision and reliability are high.First port of said temperature sensor connects VSS voltage, and second port of temperature sensor connects the TS port of MEGA32 process chip, and the 3rd port of temperature sensor connects+5V voltage, and second port of said temperature sensor connects+5V voltage through resistance.
Fig. 7 is the voltage signal acquisition circuit of sun power pole plate; Voltage acquisition element 9 is a Hall type voltage acquisition device, and precision is high, and adaptive capacity to environment is strong; Can realize the effect that voltage transitions is isolated; Gather the sun power polar plate voltage through solar voltage input port SL+ (the sun power pole plate is anodal)/SL-(sun power pole plate negative pole), voltage acquisition element 9 exports the voltage acquisition signal to the VSL interface, and through the VSL port voltage signal is transferred to singlechip chip.Its detailed connected mode is: it is anodal that first port of said Hall type voltage acquisition device connects the sun power pole plate; The 3rd port of said Hall type voltage acquisition device connects sun power pole plate negative pole; The 4th port of said Hall type voltage acquisition device connects+12V voltage; The 6th port of said Hall type voltage acquisition device connects VSS voltage, and the 8th port of said Hall type voltage acquisition device connects the VSL port of MEGA32 process chip through resistance.
Fig. 8 is the current signal Acquisition Circuit of sun power pole plate; Current acquisition element 10 is a Hall type current acquisition device; Can realize the effect that current conversion is isolated; Through the electric current of sun power electric current input port SL8-(sun power pole plate negative pole) collection sun power pole plate, current acquisition element 10 exports the current acquisition signal to the VI8 interface, and through the VI8 port voltage signal is transferred to singlechip chip.Its detailed connected mode is: the 1st, 2,3,4 ports of said Hall type current acquisition device connect sun power pole plate negative pole; The 5th, 6,7,8 ports of said Hall type current acquisition device meet sun power electric current input port SL8-, and the 11st port of said Hall type current acquisition device connects the VI8 port of MEGA32 process chip.
The described solar energy intelligent supervisory system of present embodiment adopts 485 communication patterns.Fig. 3 is the principle schematic of 485 communication lines, and wherein device 3 is 485 communication chips, and the model of 485 communication chips of selecting for use in the present embodiment is SN65HVD3082.For guaranteeing communication quality, this 485 communication chip connects through the communication that 2 optic coupling elements 6 carry out single-chip microcomputer.Be the save design expense, 2 optic coupling elements can adopt plain edition optic coupling element and high speed photo coupling element respectively, also can use other high speed photo coupling elements to incite somebody to action if desired simultaneously.485 communication facilitiess pass through RS485/A, RS485/B and VCC1 port to external transmission 485 signals.For further guaranteeing the lightning protection effect of transmission quality and transmission signals, 485 communication lines adopt device 4 and device 5 to carry out lightning protection, and wherein device 4 is a gas-discharge tube, and device 5 is a Transient Suppression Diode.
[communication relaying expansion equipment]
Fig. 2 is the principle schematic of communication relaying expansion equipment, after the RS485 signal sends through device 3, inputs to device 1 and amplifies and expansion, and device 1 is the RS485 repeater chip, and model is SN65HVD3082EDR; The purpose that adopts two RS485 repeater chips here is in order further to promote the extended capability of chip; And through two intermediate controlled devices, 2 realization relay and control; Device 2 is a triode; Wherein the DE of 485 repeater chips links to each other with the collector of triode with the RE port, the GND port of 485 repeater chips and the grounded emitter of triode, and the DI port of 485 repeater chips links to each other with the base stage of triode through resistance; The DI port of one 485 repeater chip links to each other with the RO port of another 485 repeater chip through resistance.The key of circuit is when communication is lain fallow, the interface Ro=1 of 485 repeater chips, rather than be in random state.Said communication relaying expansion equipment has 2 independently RS485 interfaces; An interface is connected with said solar energy intelligent header box; Be responsible for collecting the information of solar energy intelligent header box; Another interface is connected with said communication relay set, is responsible for sending the information of collecting to communication relay set.Communication relaying expansion equipment of the present invention has been simplified circuit design greatly, has reduced the transmission delay time of data simultaneously.
[communication trunking]
Said communication trunking has the multimachine expanded function.Fig. 4 is the principle schematic of communication trunking, and structure and Fig. 2 are similar, adopts device 1 to carry out relaying equally and receives, and realizes the relay and control function of chip with device 2.Through AO, BO and VCC interface circuit,, accomplish data communication facility at last through host computer serial ports transmission equipment or monitoring host computer (host computer or display device) transmission RS485 signal of communication.Detailed content is: said communication trunking comprises the repeater chip that 2 mirror images connect, and said repeater chip is 485 communication chips; Each 485 communication chip is all realized relay and control through 1 triode; Wherein the DE of 485 communication chips links to each other with the collector of triode with the RE port; The GND port of 485 communication chips and the grounded emitter of triode, the DI port of 485 communication chips links to each other with the base stage of triode through resistance; The DI port of one 485 communication chip links to each other with the RO port of another 485 communication chip through resistance.
[lightning protection supervisory circuit]
Said lightning protection supervisory circuit comprises lightning protection circuit and lightning protection fault signal circuit, like Fig. 9 and shown in Figure 10.
Fig. 9 is the lightning protection circuit schematic diagram of sun power pole plate (being the solar cell pole plate), and this lightning protection circuit comprises the piezoresister 11 of 2 series connection, and piezoresister 11 is band protection votage limit type piezoresister; One of them piezoresister U1 is connected the positive pole of solar cell pole plate with JP2 through JP1; Another piezoresister U2 is connected the negative pole of solar cell pole plate with JP4 through JP3; The surge voltage that the piezoresister of series connection is used to clamp down on the sun power pole plate; Series connection one gas-discharge tube 4 between two series connection piezoresisters 11, gas-discharge tube 4 is the switching mode gas-discharge tube.Gas-discharge tube 4 series connection one thermal resistor 13, thermal resistor 13 inserts the earth, and lightning current is released.When lightning current flows through the lightning protection component with said lightning protection circuit; Thunder and lightning moment can be considered an alternating signal; Convert the thunder and lightning AC signal into direct current signal through AC-DC converter 12; Drive optic coupling element 6 actions,, make the SPF signal because the action of optocoupler is changed to low level with the optical coupling secondary edges conducting.Signal through high-low level changes, and makes single-chip microcomputer can judge the lightning protection signal of sun power pole plate accurately, and then reports to the police to host computer through the communication function of system.
Figure 10 is lightning protection fault signal circuit figure of the present invention, because general lightning protection device on the market, particularly with the lightning protection device of remote signalling output function, its remote signalling is output as a switching value, and promptly the signal output state is " closure " and " disconnection " two kinds.The lightning protection fault signal circuit that present embodiment provides is a contact weakening circuit; Resistance R 2 plays the weakening effect with capacitor C 9; When FA when disconnection becomes closure; The FA1 signal will become low level by high level, and single-chip microcomputer will be judged whether deterioration failure of lightning protection device through the variation of FA1 signal this moment, and then report to the police to host computer through the communication function of system.
Solar energy intelligent supervisory system of the present invention comprises the integral type application case of intelligent monitoring, telecommunication, relaying expansion and sun power pole plate lightning protection; Wherein communication and relaying expanded function be this patent the emphasis that will set forth, it can be with originally allowing the communication function of maximum 256 machine recognition to be increased to 256
nThe recognition function of (n is the relaying number of plies) platform machine; With 1200 meters of the data transmitting range breakthrough 485 transmission limit, bring up to 1200 meters more than m (m is the progression of communication trunking) times simultaneously, and then form the big system of matrix that communication is networked with the cost of minimum; Make the communication efficiency between each equipment reach the highest; Make whole solar power station, particularly the application in large-sized solar power station reaches optimum efficiency, and drops to the cost of total system minimum.This supervisory system is considered the performance and the lightning protection requirement of equipment comprehensively simultaneously, and the security performance of total system is reached optimum.
In addition, present embodiment also provides a kind of solar energy intelligent method for supervising, and this method may further comprise the steps:
1) the plate signal collector is gathered voltage, electric current and the temperature signal of sun power pole plate; Signal processing chip in the plate signal collector is the discernible communication signal of monitoring host computer (host computer) (machine signal) with the conversion of signals that collects; Said machine signal is transferred to the solar energy intelligent header box with the communication pattern of RS485 or CAN bus;
2) be transferred to communication relaying expansion equipment after the solar energy intelligent header box gathers machine signal;
3) said communication relaying expansion equipment receives the signal that gathers of a plurality of solar energy intelligent header box transmission, signal is gathered to be transmitted to the communication trunking simultaneously;
4) the communication trunking receives the signal of a plurality of communication relaying expansion equipment transmission, and the multimachine signal that receives is uploaded to monitoring host computer (host computer), is used for demonstration, information processing and fault judgement.
Description of the invention and application are illustrative, are not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or essential characteristic, and the present invention can be with other forms, structure, layout, ratio, and realize with other elements, material and parts.
Claims (10)
1. a solar energy intelligent supervisory system is characterized in that: comprise sun power monitoring mini system, communication relaying expansion equipment, communication relay set and monitoring host computer; Said monitoring host computer is communicated by letter with communication relay set and is linked to each other; Said communication relay set is communicated by letter with several communication relaying expansion equipments and is connected, and said several communication relaying expansion equipments link to each other with the communication trunking with formula bus connecting mode hand in hand; Each communication relaying expansion equipment is all communicated by letter with several sun power monitoring mini systems and is linked to each other; Said communication trunking comprises the repeater chip that 2 mirror images connect.
2. solar energy intelligent supervisory system according to claim 1 is characterized in that: said communication trunking adopts 485 communication patterns; Said repeater chip is 485 communication chips; Each 485 communication chip is all realized relay and control through 1 triode; Wherein the DE of 485 communication chips links to each other with the collector of triode with the RE port; The GND port of 485 communication chips and the grounded emitter of triode, the DI port of 485 communication chips links to each other with the base stage of triode through resistance; The DI port of one 485 communication chip links to each other with the RO port of another 485 communication chip through resistance.
3. solar energy intelligent supervisory system according to claim 1 is characterized in that: each sun power monitoring mini system includes 1 solar energy intelligent header box and several sun power signal collecting devices; Each sun power signal collecting device includes sun power pole plate and plate signal collector; Said plate signal collector links to each other with the sun power pole plate, in order to gather the signal message of sun power pole plate; Said several sun power signal collecting devices all link to each other with said solar energy intelligent header box, in order to the information that collects is aggregated in the solar energy intelligent header box.
4. solar energy intelligent supervisory system according to claim 3 is characterized in that: said plate signal collector comprises signal processing chip, and wherein signal processing chip is a single-chip microcomputer; Single-chip microcomputer is handled the temperature signal that collects through the TS port; Through the VSL port voltage signal that collects is handled; Through the VI81 port current signal that collects is handled, and the signal after will handling is given said solar energy intelligent header box through RXD, TXD and RTS port transmission.
5. solar energy intelligent supervisory system according to claim 4 is characterized in that: said plate signal collector comprises temperature collection circuit, voltage signal acquisition circuit and current acquisition circuit;
Said temperature collection circuit comprises a temperature sensor; First port of said temperature sensor connects VSS voltage; Second port of temperature sensor connects the TS port of signal processing chip; The 3rd port of temperature sensor connects+5V voltage, and second port of said temperature sensor connects+5V voltage through resistance;
Said voltage signal acquisition circuit comprises one in order to realize the Hall type voltage acquisition device of voltage transitions isolation; First port of said Hall type voltage acquisition device connects the solar panel positive pole; The 3rd port of said Hall type voltage acquisition device connects the solar panel negative pole; The 4th port of said Hall type voltage acquisition device connects+12V voltage; The 6th port of said Hall type voltage acquisition device connects VSS voltage, and the 8th port of said Hall type voltage acquisition device connects the VSL port of signal processing chip through resistance.
Said current signal Acquisition Circuit comprises a Hall type current acquisition device in order to the current conversion isolation; The 1st, 2,3,4 ports of said Hall type current acquisition device connect the solar panel negative pole; The 5th, 6,7,8 ports of said Hall type current acquisition device meet sun power electric current input port SL8-, and the 11st port of said Hall type current acquisition device connects the VI8 port of signal processing chip.
6. solar energy intelligent supervisory system according to claim 4 is characterized in that: said intelligent monitor system also comprises the lightning protection supervisory circuit of sun power pole plate, and said lightning protection supervisory circuit comprises lightning protection circuit and lightning protection fault signal circuit;
Said lightning protection circuit comprises the piezoresister of 2 series connection, and said piezoresister is band protection votage limit type piezoresister; One of them piezoresister passes through JP1 is connected the sun power pole plate with JP2 positive pole, and another piezoresister passes through JP3 is connected the sun power pole plate with JP4 negative pole, and the piezoresister of series connection is used to clamp down on the surge voltage of sun power pole plate; Connect a gas-discharge tube between the piezoresister of two series connection, said gas-discharge tube is the switching mode gas-discharge tube; The gas-discharge tube thermal resistor of connecting, said thermal resistor inserts the earth, in order to lightning current is released;
Said lightning protection fault signal circuit is a contact weakening circuit, comprises and+first resistance that 5V voltage links to each other, and second resistance of connecting with first resistance, with the electric capacity that second resistance is connected, the other end of electric capacity links to each other with VSS voltage; The connected node of first resistance and second resistance is the FA input end, and the node that second resistance is connected with electric capacity is the FA1 output terminal.
7. solar energy intelligent supervisory system according to claim 3; It is characterized in that: said communication relaying expansion equipment has 2 independently RS485 interfaces; An interface is connected with said solar energy intelligent header box; Be responsible for collecting the information of solar energy intelligent header box, another interface is connected with said communication relay set, is responsible for sending the information of collecting to communication relay set.
8. a solar energy intelligent method for supervising is characterized in that, may further comprise the steps:
Step 1, the plate signal collector is gathered the signal of sun power pole plate; Signal processing chip in the plate signal collector is the discernible machine signal of monitoring host computer with the conversion of signals that collects, and is transferred to the solar energy intelligent header box with the communication pattern of RS485 or CAN bus;
Step 2, the machine signal that the solar energy intelligent header box will gather are transferred to communication relaying expansion equipment;
Step 3, communication relaying expansion equipment is transferred to the communication trunking with the signal that receives;
Step 4, the communication trunking sends to monitoring host computer with the multimachine signal that receives.
9. solar energy intelligent supervisory system according to claim 8 is characterized in that: said communication trunking adopts 485 communication patterns; Said repeater chip is 485 communication chips; Each 485 communication chip is all realized relay and control through 1 triode; Wherein the DE of 485 communication chips links to each other with the collector of triode with the RE port; The GND port of 485 communication chips and the grounded emitter of triode, the DI port of 485 communication chips links to each other with the base stage of triode through resistance; The DI port of one 485 communication chip links to each other with the RO port of another 485 communication chip through resistance.
10. solar energy intelligent supervisory system according to claim 8; It is characterized in that: said communication relaying expansion equipment has 2 independently RS485 interfaces; An interface is connected with said solar energy intelligent header box; Be responsible for collecting the information of solar energy intelligent header box, another interface is connected with said communication relay set, is responsible for sending the information of collecting to communication relay set.
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| CN104460555A (en) * | 2013-09-22 | 2015-03-25 | 丘玓 | Intelligent data fusion cloud control device and data transmission control method thereof |
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| CN108871613A (en) * | 2018-06-28 | 2018-11-23 | 北京汉能光伏投资有限公司 | A kind of temperature checking method and device of solar power system |
| CN110243416A (en) * | 2019-07-12 | 2019-09-17 | 福州大学 | A kind of intelligent photovoltaic array header box monitoring system based on NB-IOT |
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