CN103904765A - Micro-grid control device of photovoltaic distributed power supply - Google Patents
Micro-grid control device of photovoltaic distributed power supply Download PDFInfo
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- CN103904765A CN103904765A CN201410123079.7A CN201410123079A CN103904765A CN 103904765 A CN103904765 A CN 103904765A CN 201410123079 A CN201410123079 A CN 201410123079A CN 103904765 A CN103904765 A CN 103904765A
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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
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
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Abstract
The invention discloses a micro-grid control device of a photovoltaic distributed power supply. The micro-grid control device is composed of an energy storage device control module, a maximum-power-point tracking control module, a power measuring module, a parameter preset module, a PID operation, a PWM modulation module, a circuit and a shell. The energy storage device control module, the maximum-power-point tracking control module, the power measuring module, the parameter preset module, the PID operation, the PWM modulation module and the circuit are arranged in the shell. By means of the micro-grid control device, energy bidirectional flow between a power grid and an energy storage device can be achieved, automatic and smooth switching between an island mode and a grid-connected work mode can be achieved, and therefore higher power supply quality can be guaranteed, and higher power supply efficiency is achieved.
Description
Technical field
The present invention relates to a kind of micro-power grid control device, especially the automatic smoothing between a kind of energy in bidirectional flow and isolated island and grid-connected mode of operation that can realize between electrical network and energy storage device switches, to ensure higher power supply quality and to improve micro-power grid control device of a kind of photovoltaic distributed power source of larger power supplying efficiency, belong to new energy technology application.
Technical background
The problem such as power tense and day by day serious environmental pollution of bringing along with energy shortage, solar energy in recent years, the clean energy resourcies such as wind energy are promoted and use, the positive role that its environmental protection and energy-conservation aspect produce also receives people's concern day by day, described distributed power generation, refer generally to relatively small-sized Blast Furnace Top Gas Recovery Turbine Unit (TRT) to be arranged near generating (energy supply) mode load scene or user, distributed electrical source position is flexible, disperse, clean environment firendly, the adaptation that the features such as recyclability are fabulous dispersion electricity needs and resource distribution, slow down defeated, the power distribution network required huge investment that upgrades, simultaneously, with large electrical network each other the power supply reliability that also makes for subsequent use be improved, at present, although there is much solar energy, the product of wind energy is coming into operation, but owing to being subject to the impact of self structure and characteristic, it still comes with some shortcomings and the problem such as technical defect, as power supply intermittence causes output-power fluctuation, to the non-scheduling of operation of power networks, energy for subsequent use can not be provided, high in cost of production etc., for this reason, people need a kind of new technical scheme to produce, to solve current existing problem, object of the present invention is exactly the new technical scheme proposing in order to solve current existing problem.
Summary of the invention
In order to reach the object that solves above-mentioned existing problem, technical scheme proposed by the invention is a kind of micro-power grid control device of photovoltaic distributed power source, and its essential characteristic is: it is made up of energy storage device control module, MPPT maximum power point tracking control module, power measurement module, preset parameter module, PID computing, PWM modulation module, circuit, housing; In housing, be provided with energy storage device control module, MPPT maximum power point tracking control module, power measurement module, preset parameter module, PID computing, PWM modulation module, connecting circuit; This device has connected batteries and inverter by circuit.
In order to address the above problem, the technical characterictic that the present invention also has is: housing 15 inside have connected energy storage device module 9, maximal power tracing module 10, power measurement module 11, PID computing 13 by circuit 16, preset parameter module 12 is connected by circuit 16 with PID computing 13, PID computing 13 is connected by circuit 16 with PWM modulation module 14, energy storage device module 9 has connected batteries 3 by circuit 16, and PWM modulation module 14 has connected inverter 4 by circuit 16.
The advantage that the present invention compared with prior art had and significant effect:
1, photovoltaic distributed electrical source control system can be under certain Intensity of the sunlight, adopts MPPT maximum power point tracking control maximumly to improve solar energy to convert to the efficiency of electric energy.
2,, under power match prerequisite, the power output of photovoltaic distributed power source is the variation of follow load power dynamically.
3, can automatically adjust the voltage of photovoltaic distributed power source tie point, make the inverter between micro-power supply can not produce very large circulation.
4, can meet taking over seamlessly of photovoltaic distributed generator islanding and grid-connected two kinds of patterns.
The present invention controls for the grid-connected micro-electrical network of photovoltaic distributed power source specially, ensures its stability, effectively realizes micro-electrical network of efficient, environmental protection and quality supply, and public large electrical network is played to useful supplementary function.
Below in conjunction with accompanying drawing, micro-power grid control device of a kind of photovoltaic distributed power source of the present invention is described in detail
Fig. 1 is micro-power grid control device example structure schematic diagram of a kind of photovoltaic distributed power source of the present invention.
Fig. 2 is micro-power grid control device of a kind of photovoltaic distributed power source of the present invention and the connection diagram of external equipment.
In figure, 1 photovoltaic battery array, 2 anti-return diodes, 3 batteries, 4 inverters, 5 reactors and isolating transformer, 6 current/voltage transducers, 7 micro-electrical network or electrical networks, 8 local loads, 9 energy storage device control modules, 10 MPPT maximum power point tracking control modules, 11 power measurement module, 12 preset parameter modules, 13PID computing, 14PWM modulation module, 15 housings, 16 circuit.
Embodiment
Referring to Fig. 1
In housing 15, be provided with energy storage device control module 9, MPPT maximum power point tracking control module 10, power measurement module 11, preset parameter module 12, PID computing 13, PWM modulation module 14, circuit 16, circuit 16 can be connected with external equipment, and housing 15 inside are connected by circuit 16.
Wherein energy storage device module 9 can discharge and recharge batteries, the power demand of fast reaction load, maximal power tracing control module 10 can gather to current/voltage transducer the current/voltage of photovoltaic cell output, through constantly calculating and comparing, find out the maximum power point of photovoltaic cell, power measurement module 11 can utilize load point voltage and the inverter output current that transducer gathers to calculate active power and the reactive power of the output of photovoltaic distributed power source, for PID computing 13 provides condition, preset parameter module 12 can arrange reference voltage and reference power value, for PID computing provides condition, PID computing 13 is active power and the reactive powers after low-pass filter, respectively with reference power, reference voltage level comparison, power output phase angle and voltage magnitude, PWM modulation module 14 can be modulated voltage magnitude and the power angle of the output of photovoltaic distributed power source, then access Driven by inverter part, the energy storage device module 9 that housing 15 is inner set, maximal power tracing module 10, power measurement module 11, PID computing 13 is connected by circuit 16, preset parameter module 12 is connected by circuit 16 with PID computing 13, PID computing 13 is connected by circuit with PWM modulation module 14, energy storage device module 9 has connected batteries 3 by circuit 16, PWM modulation module 14 has connected inverter 4 by circuit 16.
Referring to Fig. 2:
Adopt micro-power grid control device of a kind of photovoltaic distributed power source of the technical program, not only can maximum improve solar energy and convert to the efficiency of electric energy, automatically adjust the voltage of photovoltaic distributed power source tie point, make the inverter between micro-power supply can not produce very large circulation, can also meet taking over seamlessly of photovoltaic distributed generator islanding and grid-connected two kinds of patterns, for photovoltaic, the development of wind energy industry has active and effective effect, the present invention controls for the grid-connected micro-electrical network of photovoltaic distributed power source specially, ensure its stability, effectively realize efficient, micro-electrical network of environmental protection and quality supply, public large electrical network is played to useful supplementary function.
Obviously; by above-mentioned explanation and for example; some technical schemes and the feature of micro-power grid control device of a kind of photovoltaic distributed power source of the present invention are disclosed; technical solution of the present invention is not limited to above-mentioned giving an example or explanation; the those of ordinary skill that the present invention program is related; the interpolation of in the technical program essential scope, it being done or replacement, within also should belonging to protection scope of the present invention.
Claims (2)
1. a micro-power grid control device for photovoltaic distributed power source, is characterized in that: it is made up of energy storage device control module, MPPT maximum power point tracking control module, power measurement module, preset parameter module, PID computing, PWM modulation module, circuit, housing; In housing, be provided with energy storage device control module, MPPT maximum power point tracking control module, power measurement module, preset parameter module, PID computing, PWM modulation module, circuit; This device has connected batteries and inverter by circuit.
2. micro-power grid control device of a kind of photovoltaic distributed power source according to claim 1, it is characterized in that: housing 15 inside have connected energy storage device module 9, maximal power tracing module 10, power measurement module 11, PID computing 13 by circuit 16, preset parameter module 12 is connected by circuit 16 with PID computing 13, PID computing 13 is connected by circuit 16 with PWM modulation module 14, energy storage device module 9 has connected batteries 3 by circuit 16, and PWM modulation module 14 has connected inverter 4 by circuit 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123079.7A CN103904765A (en) | 2014-02-24 | 2014-03-24 | Micro-grid control device of photovoltaic distributed power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410069232 | 2014-02-24 | ||
| CN201410069232.2 | 2014-02-24 | ||
| CN201410123079.7A CN103904765A (en) | 2014-02-24 | 2014-03-24 | Micro-grid control device of photovoltaic distributed power supply |
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| CN103904765A true CN103904765A (en) | 2014-07-02 |
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| CN201410123079.7A Pending CN103904765A (en) | 2014-02-24 | 2014-03-24 | Micro-grid control device of photovoltaic distributed power supply |
| CN201410318316.5A Pending CN104065102A (en) | 2014-02-24 | 2014-07-01 | Microgrid control device of photovoltaic distributed power supply |
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| CN201410318316.5A Pending CN104065102A (en) | 2014-02-24 | 2014-07-01 | Microgrid control device of photovoltaic distributed power supply |
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| CN106712253B (en) * | 2017-01-09 | 2023-08-01 | 添唯检验检测(江苏)有限公司 | Device and method for monitoring and inhibiting potential induced attenuation effect for photovoltaic power station |
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