CN204538714U - A kind of solar power generation management system with centralized management function - Google Patents
A kind of solar power generation management system with centralized management function Download PDFInfo
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- CN204538714U CN204538714U CN201520160784.4U CN201520160784U CN204538714U CN 204538714 U CN204538714 U CN 204538714U CN 201520160784 U CN201520160784 U CN 201520160784U CN 204538714 U CN204538714 U CN 204538714U
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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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model discloses a kind of solar power generation management system with centralized management function, comprise solar panel array, long-pending stream case, DC cabinet, inversion system, monitoring data collection device, remote computer, solar panel array connects long-pending stream case, long-pending stream case connects DC cabinet, DC cabinet connects inversion system, and inversion system comprises DSP Monitoring and Controlling circuit, touches display circuit, SPWM generator, isolated drive circuit, booster circuit, filter circuit, genlock loop control circuit, electrical network zero cross detection circuit and grid-connected output current control circuit; By the centralized management control model of multinode photovoltaic generating system, effectively improve generating efficiency, and improve grid-connected fail safe and sustainability, when carrying out inversion management, the center adopting Digital Signal Processing to carry out inversion system controls.
Description
Technical field
The utility model relates to photoelectric conversion technique field, specifically, is a kind of solar power generation management system with centralized management function.
Background technology
The centralized single electric power system that existing whole world electric power system is is principal character with large-sized unit, bulk power grid, high voltage.Although the electric load in the whole world 90% all concentrates single bulk power grid to power by this, the quality and safety reliability requirement of society to the energy and supply of electric power is more and more higher, and bulk power grid can not meet this requirement due to the defect of self.The disturbance produced due to the fault of any point in bulk power grid all can affect greatly whole electrical network, and may cause large-area power-cuts or even Tie-line Opening time serious, cause catastrophic effect, such accident happens occasionally abroad; And this bulk power grid is very easily subject to again the destruction of war or terrorist forces, will endanger nation's security, as Kosovo War and the Gulf War etc. time serious; Centralized bulk power grid can't follow the tracks of the change of electric load in addition, and in order to of short duration peak load build its cost of power plant be huge, economic benefit is also very low.According to Hesperian experience: it is reduce investment outlay that bulk power system and distributed generation system combine, reduce energy consumption, improve the main method of security of system and flexibility.
Distributed power generation refers at the less generating set (generally lower than 30MW) of the on-the-spot or close electricity consumption situ configuration of user, to meet the needs of specific user, supports the economical operation of existing power distribution network, or meets the requirement of these two aspects simultaneously.These little units comprise fuel cell, small size gas turbine, and low profile photovoltaic generates electricity, small-sized wind light mutual complementing power generation, or the mixing arrangement of gas turbine and fuel cell.Owing to improve reliability of service and power quality near user.The development of technology, the acting in conjunction of the factors such as the expansion of public environment policy and electricity market makes distributed power generation become new century important energy demand prediction.
Following advantage is had by the fit applications of distributed power generation and central power supply system:
In distributed generation system, each power station is separate, and user, owing to controlling voluntarily, massive blackout accident can not occur, so security reliability is higher;
Distributed power generation can make up the deficiency of bulk power grid security and stability, continues power supply, become the indispensable important supplement of centralized power supply system when unexpected storms occurs;
Can monitor in real time the quality and performance of region electric power, be applicable to very much to rural area, pastoral area, mountain area, in developing, small city or sowntown resident power, and greatly can reduce environmental protection pressure;
The power transmission and distribution loss of distributed power generation is very low, does not even have, and without the need to building power distribution station, can reduce or avoid the power transmission and distribution cost that adds, simultaneously civil engineering and installation cost low;
The demand of special occasions can be met, as (being in hot stand-by duty) the mobile distributing generator car for important rally or celebration;
Peaking performance is good, simple to operate, and because the system participating in running is few, start and stop are quick, are convenient to realize automatically.
Photovoltaic generation is as the one of distributed power generation, and its general principle is exactly " photovoltaic effect ".Time on photon irradiation to metal, its energy all can be absorbed by certain electronics in metal, and the energy of Electron absorption is enough large, can overcome the acting of metal inside gravitation, leave metal surface and escape out, become photoelectron.
Illumination makes inhomogeneos semiconductor or produces the phenomenon of potential difference between semiconductor and the different parts of corrupt split.It is first be converted into electronics by photon (light wave), process that light energy is converted into electric flux; Secondly, be coating-forming voltage process.There is voltage, just as having built dam high, if be communicated with, the loop of electric current will have been formed between the two.
The cardinal principle of photovoltaic generation is the photoelectric effect of semiconductor.Silicon atom has 4 electronics, if the atom being mixed with 5 electronics in pure silicon is as phosphorus atoms, just becomes N type semiconductor; If be mixed with the atom of 3 electronics as boron atom in pure silicon, form P type semiconductor.When P type and N type junction are combined, contact-making surface will form electrical potential difference, becomes solar cell.After solar irradiation is mapped to P-N junction, hole is moved from N polar region toward P polar region, and electronics is moved to N polar region by P polar region, forms electric current.
Polysilicon, after ingot casting, broken ingot, section supervisor, is made into silicon chip to be processed.On silicon chip, the boron, phosphorus etc. of doping and diffusion trace, just form P-N junction.Then adopt silk screen printing, silver slurry essence prepared is imprinted on silicon chip makes grid line, and through oversintering, make back electrode simultaneously, and having the face of grid line to be coated with one deck anti-reflection coating, cell piece is just so far made.Cell piece permutation and combination becomes battery component, just constitutes large circuit board.General at assembly surrounding alclad frame, front cover glass, reverse side installing electrodes.
Utility model content
The purpose of this utility model is to design a kind of solar power generation management system with centralized management function, on the basis that the individuality of existing distributed power generation management system is managed independently, integrated intelligent of the management and control of further raising data and center, by the centralized management control model of multinode photovoltaic generating system, effective raising generating efficiency, and improve grid-connected fail safe and sustainability, when carrying out inversion management, the center adopting Digital Signal Processing to carry out inversion system controls, ensure that direct current becomes the reliability of reversals when exchanging, meet the voltage of grid-connected voltage with main electrical network with frequency homophase, there will not be because treating networking voltage and the unmatched situation of major network voltage and the situation causing major network to paralyse occurs, it is reasonable that whole system has design science, safety and stability, the feature such as practical.
The utility model is achieved through the following technical solutions: a kind of solar power generation management system with centralized management function, comprise solar panel array, long-pending stream case, DC cabinet, inversion system, monitoring data collection device, remote computer, described solar panel array connects long-pending stream case, described long-pending stream case connects DC cabinet, described DC cabinet connects inversion system, described inversion system is connected on high-voltage fence, described monitoring data collection device is connected on inversion system, and described remote computer is connected on monitoring data collection device by the Internet, described inversion system comprises DSP Monitoring and Controlling circuit, touch display circuit, SPWM generator, isolated drive circuit, booster circuit, filter circuit, genlock loop control circuit, electrical network zero cross detection circuit and grid-connected output current control circuit, described touch display circuit connects DSP Monitoring and Controlling circuit, described DSP Monitoring and Controlling circuit connects SPWM generator, described DC cabinet connects SPWM generator, described SPWM generator connects isolated drive circuit, described isolated drive circuit connects booster circuit, described booster circuit connects filter circuit, described filter circuit connects grid-connected output current control circuit, described grid-connected output current control circuit connects electrical network zero cross detection circuit, described electrical network zero cross detection circuit connects genlock loop control circuit, described genlock loop control circuit connects SPWM generator, described grid-connected output current control circuit is connected on high-voltage fence.
Further, for better realizing system described in the utility model, mode by Voltage Feedback sampling detects, to determine that whether the voltage to be integrated into major network is consistent with major network voltage, be provided with following structure especially: described inversion system also comprises output voltage feedback circuit, described filter circuit connects DSP Monitoring and Controlling circuit by output voltage feedback circuit.
Further, for better realizing system described in the utility model, for realizing overcurrent, the defencive function such as overheated, under-voltage, be provided with following structure especially: described inversion system also comprises protective circuit, described protective circuit connects SPWM generator.
Further, for better realizing system described in the utility model, ripe DSP process chip can be utilized to complete master control function, the following set-up mode of special employing: described DSP Monitoring and Controlling main circuit chip adopts TMS320F2812.
Further, for better realizing the utility model, on-the-spot independent management and control function can be completed, form independent field control strategy, be provided with following structure especially: also comprise field computer, described field computer connects monitoring data collection device, and field computer is connected with remote computer by internet.
Further, for better realizing system described in the utility model, can monitor the temperature of surrounding enviroment and site environment, thus form good control strategy, be provided with following structure especially: the temperature measurer also comprising the temperature monitoring for carrying out scene temperature and surrounding enviroment, described temperature measurer is connected on monitoring data collection device.
Further, for better realizing the utility model, can monitor intensity of illumination thus form rational power generation strategies, make whole system operating efficiency higher, be provided with following structure especially: also comprise the irradiation instrument for monitoring illuminance, described irradiation instrument connects monitoring data collection device.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is on the basis that the individuality of existing distributed power generation management system is managed independently, integrated intelligent of the management and control of further raising data and center, by the centralized management control model of multinode photovoltaic generating system, effective raising generating efficiency, and improve grid-connected fail safe and sustainability, when carrying out inversion management, the center adopting Digital Signal Processing to carry out inversion system controls, ensure that direct current becomes the reliability of reversals when exchanging, meet the voltage of grid-connected voltage with main electrical network with frequency homophase, there will not be because treating networking voltage and the unmatched situation of major network voltage and the situation causing major network to paralyse occurs, it is reasonable that whole system has design science, safety and stability, the feature such as practical.
(2) the utility model adopts ripe digital signal processing chip to carry out center management and control, effectively can improve the handling property of whole system, there will not be the situation of systemic breakdown to occur, and ensures that distributed power generation power supply can steady in a long-term being incorporated within major network.
(3) the utility model adopts the individual Management and Operation Model managed pattern independently and combine with remote centralized management mode of on-the-spot node, can when any one managed operation data break down wherein, also the systemic breakdown phenomenon of present node can not be caused to occur, can effectively meet present node produce electric energy safe stable carry out grid-connected operation.
(4) the utility model can utilize field erected testing equipment such as such as temperature measurer, irradiation instrument etc. to test the temperature at scene, ambient temperature and illuminance, thus good control strategy can be formed according to these parameters, can generate electricity by the optimized solar energy that utilizes to ensure, and form stable grid-connected voltage, avoid because voltage input is unstable and affect grid-connected input.
(5) the utility model adopts the detection mode that voltage, electric current combine, can effective guarantee be incorporated to major network distributed power generation power supply with major network power supply with frequency, homophase, press together, cocurrent flow.
(6) the utility model Applied Digital signal processing technology carries out master control, the ability of the computing of its fast powerful and disposal ability and parallel running, meets the requirement of combining inverter control system to real-time and Processing Algorithm complexity.
Accompanying drawing explanation
Fig. 1 is solar power generation management system schematic diagram described in the utility model.
Fig. 2 is inversion system theory diagram described in the utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1:
A kind of solar power generation management system with centralized management function, as shown in Figure 1 and Figure 2, comprise solar panel array, long-pending stream case, DC cabinet, inversion system, monitoring data collection device, remote computer, described solar panel array connects long-pending stream case, described long-pending stream case connects DC cabinet, described DC cabinet connects inversion system, described inversion system is connected on high-voltage fence, described monitoring data collection device is connected on inversion system, and described remote computer is connected on monitoring data collection device by the Internet, described inversion system comprises DSP Monitoring and Controlling circuit, touch display circuit, SPWM generator, isolated drive circuit, booster circuit, filter circuit, genlock loop control circuit, electrical network zero cross detection circuit and grid-connected output current control circuit, described touch display circuit connects DSP Monitoring and Controlling circuit, described DSP Monitoring and Controlling circuit connects SPWM generator, described DC cabinet connects SPWM generator, described SPWM generator connects isolated drive circuit, described isolated drive circuit connects booster circuit, described booster circuit connects filter circuit, described filter circuit connects grid-connected output current control circuit, described grid-connected output current control circuit connects electrical network zero cross detection circuit, described electrical network zero cross detection circuit connects genlock loop control circuit, described genlock loop control circuit connects SPWM generator, described grid-connected output current control circuit is connected on high-voltage fence.
In use, by on grid-connected output current control circuit access major network (AC network), both the also net operation having completed distributed power generation (as photovoltaic generation) electric energy also can complete the acquisition operations of major network electric current, electrical network zero cross detection circuit will detect a zero-crossing pulse of AC network by grid-connected output current control circuit, then input in genlock loop control circuit, then be loaded in SPWM generator, and form the sinusoidal wave pulse signal of same major network with frequency homophase in conjunction with DSP Monitoring and Controlling circuit, solar energy is converted to electric energy by solar panel array, long-pending stream case is then utilized effectively to collect it, formation can carry out the big current transmitted, the electric current that collects of stream case is amassed in many places will carry out DC-DC conversion in DC cabinet, thus reach a voltage stabilization, the direct voltage of current stabilization, this direct voltage generates energy sine wave according to the frequency utilization SPWM generator of sine wave signal, energy sine wave will be carried in booster circuit by isolated drive circuit and boost, it is made to reach the magnitude of voltage of AC network, then by filter circuit by unnecessary clutter filtering, and the alternating current after filtering clutter is loaded in AC network by grid-connected output current control circuit, complete the also net operation of distributed power generation.
Exist in use procedure, monitoring data collection device will complete the monitoring collection of the many kinds of parameters such as such as voltage levels, size of current, frequency, phase place, so that remote computer forms effective management and control strategy according to these parameters, system of being convenient to better generates electricity with grid-connected, and the electricity generation system at multiple scene is managed concentratedly synchronously utilizing remote computer simultaneously.
On the basis that the individuality of existing distributed power generation management system is managed independently, integrated intelligent of the management and control of further raising data and center, by the centralized management control model of multinode photovoltaic generating system, effective raising generating efficiency, and improve grid-connected fail safe and sustainability, when carrying out inversion management, the center adopting Digital Signal Processing to carry out inversion system controls, ensure that direct current becomes the reliability of reversals when exchanging, meet the voltage of grid-connected voltage with main electrical network with frequency homophase, there will not be because treating networking voltage and the unmatched situation of major network voltage and the situation causing major network to paralyse occurs, it is reasonable that whole system has design science, safety and stability, the feature such as practical.
Embodiment 2:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further, for better realizing system described in the utility model, mode by Voltage Feedback sampling detects, to determine that whether the voltage to be integrated into major network is consistent with major network voltage, as shown in Figure 1 and Figure 2, be provided with following structure especially: described inversion system also comprises output voltage feedback circuit, described filter circuit connects DSP Monitoring and Controlling circuit by output voltage feedback circuit.
Embodiment 3:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 1; further; for better realizing system described in the utility model; for realizing overcurrent, the defencive function such as overheated, under-voltage; as shown in Figure 1 and Figure 2; be provided with following structure especially: described inversion system also comprises protective circuit, described protective circuit connects SPWM generator.
Embodiment 4:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 1, further, for better realizing system described in the utility model, ripe DSP process chip can be utilized to complete master control function, the following set-up mode of special employing: described DSP Monitoring and Controlling main circuit chip adopts TMS320F2812.
TMS320F2812 digital signal processor is for digital control designed DSP, incorporates the optkmal characteristics of DSP and microcontroller.For application optimization, and effectively shorten product development cycle, the C compiler of the brand-new CCS environment of F28x core support, provides the program development interface of direct embedded assembly language in C language, can arrange in pairs or groups assembler language to the program of writing in the environment of C language.It is worth mentioning that, F28x DSP core supports special IQ-math function storehouse, and system developer can use cheap fixed-point number DSP to develop required floating-point operation algorithm.F28x series DSP projected extension, to 400MHz, has been developed to the Flash pattern of 150MHz at present.
There is following characteristic:
The static CMOS of high-performance makes technology: 150MHz (6.67ns cycle time), power saving design (1.8VCore, 3.3VI/O), 3.3V cache programmable voltage;
JTAG scans support;
High-effect 32BitCPU:16x16 and 32x32MAC Operations, 16x16Dual MAC,
Harvard's bus structures, quick-speed interruption responds,
4M linear program addressing space (LinearProgramAddressReach), 4M linear data addressing space (LinearDataAddressReach), TMS320F24X/LF240X program kernel is compatible;
The internal memory of (On-Chip) on chip: 128Kx16 Flash (4 8Kx16,6 16Kx16), 1Kx16OTPROM (single can program read-only memory), L0 and L1:2 group 4Kx16 SARAM, H0:1 group 8Kx16SARAM, M0 and M1:2 group 1Kx16 SARAM, altogether 128Kx16 Flash, 18Kx16 SARAM;
External memory interface: support the external memory of 1M, can the Wait States of program, can the minimum g of Read/Write StrobeTi of program, three independently chip selections (Chip Selects);
Frequency and Systematical control: support that dynamic PGC demodulation module (PLL) ratio changes, On-Chip oscillator, WatchDog Timer module;
Three external interrupt;
Peripheral interrupt expansion square (PIE), supports 45 peripheral interruptions;
128 protection passwords: protection Flash/ROM/OTP and L0/L1SARAM, prevents firmware reverse-engineering;
Three 32 bit CPU Timer;
Motor Control is peripheral: two event manager modules (EVA, EVB), compatible with 240xADSP;
Synchronous serial peripheral interface SPI module, two asynchronous serial communication interface SCI modules, standard UART, eCAN (Enhanced Controller Area Network), McBSP With SPI Mode;
16 channels, 12 analog-digital conversion module (ADC): the input multitask of 2x8 passage, two independently sample-keep (Sample-and-Hold) circuit, can single or synchronously change, transfer ratio fast: 80ns/12.5MSPS.
Embodiment 5:
The present embodiment is at the enterprising one-step optimization in the basis of above-mentioned any embodiment, further, for better realizing the utility model, on-the-spot independent management and control function can be completed, form independent field control strategy, as Fig. 1, shown in Fig. 2, be provided with following structure especially: also comprise field computer, described field computer connects monitoring data collection device, and field computer is connected with remote computer by internet, all kinds of parameters that field computer gathers according to monitoring data collection device, and the formulation of new strategy is carried out according to Existing policies, optimized power generation strategies is formed to reach, electricity consumption strategy and grid-connected strategy.
Embodiment 6:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 1-4 any embodiment, further, for better realizing system described in the utility model, can monitor the temperature of surrounding enviroment and site environment, thus form good control strategy, as shown in Figure 1 and Figure 2, be provided with following structure especially: the temperature measurer also comprising the temperature monitoring for carrying out scene temperature and surrounding enviroment, described temperature measurer is connected on monitoring data collection device.
When operating, the temperature of temperature measurer to scene temperature and surrounding enviroment is measured in real time, and monitoring data collection device carries out monitoring collection to this parameter, then at the scene in computer in conjunction with all kinds of electrical quantity, form preferred control strategy, so as to make generating efficiency and grid connection efficiency higher.
Embodiment 7:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 1-4 any embodiment, further, for better realizing the utility model, can monitor intensity of illumination thus form rational power generation strategies, make whole system operating efficiency higher, as shown in Figure 1 and Figure 2, be provided with following structure especially: also comprise the irradiation instrument for monitoring illuminance, described irradiation instrument connects monitoring data collection device.
When operating, irradiation instrument is measured in real time to Real-Time Optical illumination, and monitoring data collection device carries out monitoring collection to this parameter, then at the scene in computer in conjunction with all kinds of electrical quantity, temperature parameter etc., form preferred control strategy, so as to make generating efficiency and grid connection efficiency higher.
The utility model is on the basis that the individuality of existing distributed power generation management system is managed independently, integrated intelligent of the management and control of further raising data and center, by the centralized management control model of multinode photovoltaic generating system, effective raising generating efficiency, and improve grid-connected fail safe and sustainability, when carrying out inversion management, the center adopting Digital Signal Processing to carry out inversion system controls, ensure that direct current becomes the reliability of reversals when exchanging, meet the voltage of grid-connected voltage with main electrical network with frequency homophase, there will not be because treating networking voltage and the unmatched situation of major network voltage and the situation causing major network to paralyse occurs, it is reasonable that whole system has design science, safety and stability, the feature such as practical.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection range of the present utility model.
Claims (7)
1. one kind has the solar power generation management system of centralized management function, it is characterized in that: comprise solar panel array, long-pending stream case, DC cabinet, inversion system, monitoring data collection device, remote computer, described solar panel array connects long-pending stream case, described long-pending stream case connects DC cabinet, described DC cabinet connects inversion system, described inversion system is connected on high-voltage fence, described monitoring data collection device is connected on inversion system, and described remote computer is connected on monitoring data collection device by the Internet, described inversion system comprises DSP Monitoring and Controlling circuit, touch display circuit, SPWM generator, isolated drive circuit, booster circuit, filter circuit, genlock loop control circuit, electrical network zero cross detection circuit and grid-connected output current control circuit, described touch display circuit connects DSP Monitoring and Controlling circuit, described DSP Monitoring and Controlling circuit connects SPWM generator, described DC cabinet connects SPWM generator, described SPWM generator connects isolated drive circuit, described isolated drive circuit connects booster circuit, described booster circuit connects filter circuit, described filter circuit connects grid-connected output current control circuit, described grid-connected output current control circuit connects electrical network zero cross detection circuit, described electrical network zero cross detection circuit connects genlock loop control circuit, described genlock loop control circuit connects SPWM generator, described grid-connected output current control circuit is connected on high-voltage fence.
2. a kind of solar power generation management system with centralized management function according to claim 1, it is characterized in that: described inversion system also comprises output voltage feedback circuit, described filter circuit connects DSP Monitoring and Controlling circuit by output voltage feedback circuit.
3. a kind of solar power generation management system with centralized management function according to claim 1, is characterized in that: described inversion system also comprises protective circuit, and described protective circuit connects SPWM generator.
4. a kind of solar power generation management system with centralized management function according to claim 1, is characterized in that: described DSP Monitoring and Controlling main circuit chip adopts TMS320F2812.
5. a kind of solar power generation management system with centralized management function according to any one of claim 1-4, it is characterized in that: also comprise field computer, described field computer connects monitoring data collection device, and field computer is connected with remote computer by internet.
6. a kind of solar power generation management system with centralized management function according to any one of claim 1-4, it is characterized in that: the temperature measurer also comprising the temperature monitoring for carrying out scene temperature and surrounding enviroment, described temperature measurer is connected on monitoring data collection device.
7. a kind of solar power generation management system with centralized management function according to any one of claim 1-4, is characterized in that: also comprise the irradiation instrument for monitoring illuminance, and described irradiation instrument connects monitoring data collection device.
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| CN104682442A (en) * | 2015-03-20 | 2015-06-03 | 成都姜业光电科技有限公司 | Solar power generation management system and method with centralized management function |
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