CN203589743U - Highly efficient photovoltaic distributed power generation system - Google Patents

Highly efficient photovoltaic distributed power generation system Download PDF

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Publication number
CN203589743U
CN203589743U CN201320448728.1U CN201320448728U CN203589743U CN 203589743 U CN203589743 U CN 203589743U CN 201320448728 U CN201320448728 U CN 201320448728U CN 203589743 U CN203589743 U CN 203589743U
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China
Prior art keywords
generation system
control device
supervisory control
photovoltaic
inclination angle
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Expired - Fee Related
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CN201320448728.1U
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Chinese (zh)
Inventor
钱弢
邓平
王皓天
陆志平
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GD SOLAR Co Ltd
GUODIAN NEW ENERGY TECHNOLOGY INSTITUTE
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GD SOLAR Co Ltd
GUODIAN NEW ENERGY TECHNOLOGY INSTITUTE
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Priority to CN201320448728.1U priority Critical patent/CN203589743U/en
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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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  • Photovoltaic Devices (AREA)

Abstract

The utility model discloses a highly efficient photovoltaic distributed power generation system comprising a power generator, a highly efficient photovoltaic assembly, a dip angle adjusting support, a grid-connected inverter, a grid connected AC box, a control device, a monitoring controller and an environment monitor; when the sun light irradiates on the photovoltaic assembly, photovoltaic effect is generated for producing DC current; the DC current is converted to AC current through the grid connected inverter so as to provide user load power consumption; when a user side load needs no power or power has not fully consumed, the current is transmitted to a public grid; the highly efficient photovoltaic distributed power generation system employs the photovoltaic assembly, the dip angle adjusting support and the grid-connected inverter, so power generation efficiency is improved, and whole generating capacity is improved by 10%; simultaneously the monitoring controller is employed to optimize, control and manage the system, thereby improving electric energy quality and security of the power grid.

Description

A kind of high efficiency photovoltaic distributed generation system
Technical field
The utility model relates to a kind of electricity generation system, particularly a kind of high efficiency photovoltaic distributed generation system.
Background technology
Photovoltaic distributed generation system is to utilize distributed photovoltaic power nearby in user's side, solar energy is converted to direct current, and then be converted to alternating current for user directly with a kind of electricity generation system of upper electrical network, it is effectively supplementing large electrical network long-distance transmissions electric energy.
Photovoltaic distributed power generation is a kind of novel, tool generating with broad prospects for development and comprehensive utilization of energy mode, it advocates generating nearby, grid-connected nearby, conversion nearby, the principle of using nearby, not only can effectively improve the energy output of same size photovoltaic plant, also efficiently solve the loss problem of electric power in boosting and transporting for long-distance simultaneously.But how distributed power generation is to maximizing solar power generation amount, how guaranteeing that power grid security has also proposed strict demand, and the functional and stability of this process photovoltaic DC-to-AC converter also seems extremely crucial.
Summary of the invention
Goal of the invention: it is low and without the problem of optimal control that the purpose of this utility model is to solve prior art photovoltaic distributed generation system whole efficiency.
Technical scheme: the utility model provides following technical scheme: a kind of high efficiency photovoltaic distributed generation system, comprises photovoltaic module, adjustable inclination angle support, combining inverter, interchange net cage, public electric wire net, user's lateral load, supervisory control device, environment monitor; Wherein photovoltaic module is connected with adjustable inclination angle support, adjustable inclination angle support is connected with combining inverter, combining inverter is connected with interchange net cage, exchanging also net cage is connected with public electric wire net and user's lateral load respectively, user's lateral load is connected with supervisory control device, supervisory control device interconnects with exchanging also net cage, and supervisory control device is connected with adjustable inclination angle support, and environment monitor is connected with supervisory control device.
As optimization, in described electricity generation system, photovoltaic module adopts efficient crystal silicon or film assembly.
As optimization, in described electricity generation system, photovoltaic module is arranged on adjustable inclination angle support, and adjustable support is manual or motorized adjustment.
As optimization, synchronization AC case and bag purse rope side circuit breaker, lightning protection device, generating gauge table network interface and alternating voltage ammeter in described electricity generation system.
Operation principle: solar irradiation is mapped to photovoltaic module surface, assembly is arranged on adjustable inclination angle support, photovoltaic module generation photovoltaic effect produces direct current, through combining inverter, be converted to alternating current, by exchange and net cage for user lateral load electricity consumption, public electric wire net on electric weight when user's not electricity consumption of lateral load or electricity too many or too much for use.Whole process is by supervisory control device monitoring, control.
Beneficial effect: the utility model compared with prior art: photovoltaic module described in the utility model adopts efficient crystal silicon or film assembly, and stable performance, transfer ratio are high; The angle electronic or manual adjustments level inclination that adopts adjustable inclination angle support improves the solar radiation quantity of direct projection to assembly surface, thereby improves generating efficiency and energy output; Grid type inverter has that MPPT voltage range is wide, starting resistor is low, conversion efficiency is high, uses the features such as membrane capacitance technology, have concurrently simultaneously conflux, power back-off function.High efficiency photovoltaic distributed generation system described in the utility model, has adopted photovoltaic module, adjustable inclination angle support, grid type inverter, and therefore high, the overall energy output of generating efficiency improves approximately 10%.Adopt supervisory control device simultaneously, system has been optimized to control and management, improved the quality of power supply and the fail safe to electrical network.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Comprise as shown in Figure 1 photovoltaic module 11, adjustable inclination angle support 12, combining inverter 13, exchange also net cage 14, public electric wire net 15, user's lateral load 16, supervisory control device 21, environment monitor 22.
Electric current produces, transmitting procedure is as follows: solar irradiation is mapped to photovoltaic module 11 surfaces, assembly is arranged on adjustable inclination angle support 12, there is photovoltaic effect and produce direct current in photovoltaic module 11, through combining inverter 13, be converted to alternating current, by exchange and net cage 14 for user's lateral load 16 electricity consumptions, public electric wire net 15 on electric weight when user's lateral load 16 not electricity consumptions or electricity too many or too much for use.Whole process is monitored, is controlled by supervisory control device 21.
Photovoltaic module 11 adopts efficient crystal silicon or film assembly, and stable performance, transfer ratio are high, and this is to increase the most direct mode of energy output in the occupation of land situation of homalographic.Photovoltaic module 11 is arranged on adjustable inclination angle support 12, and adjustable inclination angle support 12 can be manual or electronic mode, and it is the solar radiation quantity good according to analytical calculation in advance by staff that manual mode regulates, at the inclination angle of certain Timing support and horizontal plane, it is to be driven by electro-motor that electronic mode regulates, by supervisory control device 21, controlled, 21 li of supervisory control devices have the database arranging according to the annual solar radiation quantity in locality in advance, seasonal regulate the level inclination of support or measure the moment at high noon by environment monitor 22 be irradiated to the solar radiation quantity on assembly, signal is passed to supervisory control device 21, then supervisory control device 21 is controlled electro-motor and is regulated level inclination, the final solar radiation quantity of direct projection to photovoltaic module 11 surfaces that improve, the number of times of leaning angle adjusting in a year is set and is formed by database, regulate number of times more, energy output is higher, but to the structure of adjustable support, electromechanical properties require higher, can determine according to energy output and input ratio, by this, can improve the energy output of system approximately 4%.Combining inverter 13 is that the direct current that photovoltaic module 11 is sent collects and DC inversion is become to exchange, it has high conversion efficiency more than 98% compared with conventional inverter, use membrane capacitance that is provided the useful life of system, wide direct voltage input range (being up to 1000V), starting resistor low (270V), the advantages such as fully loaded MPP voltage wide (250-800V), have increased generating efficiency and energy output; Have the function of header box, DC power distribution cabinet, power back-off simultaneously concurrently, reduced the power loss of electric component and direct current cables.Alternating current is transferred to public electric wire net 15 or user's lateral load 16 by exchanging also net cage 14, exchange also net cage 14 and include also network interface, circuit breaker, lightning protection device, alternating voltage ammeter, generating gauge table, generating gauge table is arranged on public electric wire net 15 sides, and the electric weight of online is measured.
Whole control procedure is as follows: environment monitor 22 sense ambient temperature, solar radiation quantity, wind speed etc., these signals are transferred to supervisory control device 21, and in supervisory control device 21, there is database, control adjustable inclination angle support 12, change inclination angle angle.The signals such as the combining inverter 13 every road of perception photovoltaic group string DC voltage and currents, power back-off voltage, exchange and net cage 14 perception alternating voltage current signals be transferred to supervisory control device 21 and control the switching of combining inverter 13 interior every circuit breakers, regulating power, Dui Mei road photovoltaic group string working condition, the quality of power supply and monitor, prevent the impact to public electric wire net 15; Supervisory control device 21 is controlled and is exchanged the also switching of net cage 14 inner breakers.User's lateral load 16 perception electricity consumption situations are also transferred to supervisory control device 21 by signal, be implemented as when user's lateral load 16 not electricity consumption, the circuit breaker that connects load 16 is opened, and connects the breaker closing of electrical network 15, and the alternating current that system is sent is directly transferred to public electric wire net 15; When user's lateral load 16 electricity consumptions but while toing many or too much for use, connect the breaker closing of load 16 and electrical network 15, but have logic precedence relationship, the electricity that system is sent is first for load 16, and remaining part is transferred to public electric wire net 15; When user's lateral load 16 electricity consumptions are when abundant, connect the breaker closing of load 16, the circuit breaker that connects electrical network 15 is opened, and the electricity that system is sent is all for load 16.The Monitoring Data such as supervisory control device 21 the integration environments, security protection, electric flux, the quality of power supply, classification is processed, classification storage, unified interface shows Monitoring Data, all communication interfaces are all RS485, easy to operate.
This system, compared with conventional system, has adopted high-efficiency photovoltaic assembly, adjustable inclination angle support, efficient grid type inverter, and therefore high, the overall energy output of generating efficiency improves approximately 10%.Adopt supervisory control device simultaneously, system has been optimized to control and management, improved the quality of power supply and the fail safe to electrical network.

Claims (4)

1. a high efficiency photovoltaic distributed generation system, is characterized in that: comprise photovoltaic module (11), adjustable inclination angle support (12), combining inverter (13), exchange also net cage (14), public electric wire net (15), user's lateral load (16), supervisory control device (21), environment monitor (22), wherein photovoltaic module (11) is connected with adjustable inclination angle support (12), adjustable inclination angle support (12) is connected with combining inverter (13), combining inverter (13) is connected with interchange net cage (14), exchanging also net cage (14) is connected with public electric wire net (15) and user's lateral load (16) respectively, user's lateral load (16) is connected with supervisory control device (21), supervisory control device (21) with exchange and net cage (14) interconnect, supervisory control device (21) is connected with adjustable inclination angle support (12), environment monitor (22) is connected with supervisory control device (21).
2. high efficiency photovoltaic distributed generation system according to claim 1, is characterized in that: in described electricity generation system, photovoltaic module adopts efficient crystal silicon or film assembly.
3. high efficiency photovoltaic distributed generation system according to claim 2, is characterized in that: in described electricity generation system, photovoltaic module is arranged on adjustable inclination angle support (1) above, and adjustable support is manual or motorized adjustment.
4. high efficiency photovoltaic distributed generation system according to claim 3, is characterized in that: in described electricity generation system, synchronization AC case (3) comprises net side circuit breaker, lightning protection device, generating gauge table network interface and alternating voltage ammeter.
CN201320448728.1U 2013-07-26 2013-07-26 Highly efficient photovoltaic distributed power generation system Expired - Fee Related CN203589743U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104348181A (en) * 2013-07-26 2015-02-11 国电新能源技术研究院 Highly efficient photovoltaic distributed power generation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104348181A (en) * 2013-07-26 2015-02-11 国电新能源技术研究院 Highly efficient photovoltaic distributed power generation system

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Granted publication date: 20140507

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