CN105048931A - High-efficiency photovoltaic distributed power generation system - Google Patents
High-efficiency photovoltaic distributed power generation system Download PDFInfo
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- CN105048931A CN105048931A CN201510502341.3A CN201510502341A CN105048931A CN 105048931 A CN105048931 A CN 105048931A CN 201510502341 A CN201510502341 A CN 201510502341A CN 105048931 A CN105048931 A CN 105048931A
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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 invention, which relates to the technical field of the photovoltaic power generation system, provides a high-efficiency photovoltaic distributed power generation system. A grid-connected inverter (2) is connected with an alternating-current grid-connected box (3); the alternating-current grid-connected box (3) is respectively connected with a public power supply system (4) and a user side load (5); the user side load (5) is connected with a monitoring controller (6); the monitoring controller (6) and the alternating-current grid-connected box (3) are mutually connected; the monitoring controller (6) and an adjustable inclined-angle support (1); and an environment monitor (7) and the monitoring controller (6) are connected. According to the invention, with the high-efficiency photovoltaic assembly, the adjustable inclined-angle support, and the high-efficiency grid-connected inverter, the power generation efficiency is high and the overall generating capacity is improved by about 10%. Meanwhile, the monitoring controller is used for controlling and managing the system for optimization; the electric energy quality and safety of the power grid are improved; and defects that overall efficiency of the existing photovoltaic distributed power generation system is low and no optimized control can be provided can be overcome.
Description
Technical field:
The present invention relates to photovoltaic generating system technical field, particularly relate to a kind of high efficiency photovoltaic distributed generation system.
Background technology:
Photovoltaic distributed generation system utilizes distributed photovoltaic power nearby in user 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 bulk power grid 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 is advocated and generates electricity nearby, grid-connected nearby, change nearby, the principle used nearby, effectively can not only improve the energy output of same size photovoltaic plant, also efficiently solve the loss problem of electric power in boosting and long-distance transport simultaneously.But how distributed power generation is to maximizing solar power generation amount, how ensureing that power grid security it is also proposed strict demand, and the functional and stability of this process photovoltaic DC-to-AC converter also seems abnormal crucial.
Summary of the invention:
The object of this invention is to provide a kind of high efficiency photovoltaic distributed generation system, it have employed efficient photovoltaic module, adjustable inclination angle support and efficient grid type inverter, therefore generating efficiency is high, overall energy output improves about 10%, have employed supervisory control device simultaneously, control and management is optimized to system, improves the quality of power supply and the fail safe to electrical network, solve existing photovoltaic distributed generation system whole efficiency low and without the defect of optimal control.
In order to solve the problem existing for background technology, the present invention is by the following technical solutions: it is made up of adjustable inclination angle support 1, combining inverter 2, interchange grid connection box 3, public electric wire net 4, user's lateral load 5, supervisory control device 6, environment monitor 7; Adjustable inclination angle support 1 is connected with combining inverter 2, combining inverter 2 is connected with interchange grid connection box 3, exchange grid connection box 3 to be connected with public electric wire net 4 and user's lateral load 5 respectively, user's lateral load 5 is connected with supervisory control device 6, supervisory control device 6 with exchange grid connection box 3 and be interconnected, supervisory control device 6 is connected with adjustable inclination angle support 1, and environment monitor 7 is connected with supervisory control device 6.
Described adjustable inclination angle support 1 is provided with photovoltaic module, when solar irradiation is mapped to photovoltaic module surperficial, photovoltaic module generation photovoltaic effect produces direct current, alternating current is converted to through combining inverter 2, by exchanging grid connection box 3 for user's lateral load 5 electricity consumption, the public electric wire net 4 on electricity when user's lateral load 5 not electricity consumption or electricity cannot be used up, whole process is monitored by supervisory control device 6 and is controlled.
Described photovoltaic module adopts efficient crystal silicon component, stable performance, and transfer ratio is high.
Described adjustable inclination angle support 1 can be manually and electronic two kinds of modes, and it is by staff's solar radiation quantity good according to analytical calculation in advance that manual mode regulates, at the inclination angle of certain Timing support and horizontal plane, it is driven by electro-motor that electronic mode regulates, controlled by supervisory control device 6, supervisory control device 6 li has in advance according to the database that the annual solar radiation quantity in locality is arranged, seasonal regulate the level inclination of support or measure the moment at high noon by environment monitor 7 be irradiated to solar radiation quantity on assembly, signal is passed to supervisory control device 6, then supervisory control device 6 controls electro-motor and regulates level inclination, final raising direct projection is to the solar radiation quantity on photovoltaic module surface, the number of times of leaning angle adjustment in a year is set by database and forms, 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, the energy output of system about 4% can be improved by this.
Described combining inverter 2 is that the direct current sent by photovoltaic module collects and becomes to exchange by DC inversion, it has high conversion efficiency more than 98% compared with conventional inverter, membrane capacitance is used to provide the useful life of system, wide direct voltage input range is up to 1000V, there is the features such as MPPT voltage range is wide, starting resistor is low, conversion efficiency is high, use membrane capacitance technology, add generating efficiency and energy output; Have the function of header box, DC power distribution cabinet, power back-off simultaneously concurrently, decrease the power loss of electric component and direct current cables.
Described interchange grid connection box 3 be alternating current pass through exchange grid connection box 3 be transferred to public electric wire net 4 or user's lateral load 5, exchange grid connection box 3 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 4 side, measures the electricity of online.
Described supervisory control device 6 is monitoring solar radiation amount, temperature, inverter operating state and ruuning situation etc., and controlling the work of adjustable support, the opening and closing of circuit breaker and power dispatching, is improve energy output and power grid security protective device.
Described environment monitor 7 mainly measures the meteorological condition of photovoltaic system locality, as the environmental parameter such as solar irradiation, temperature.
Whole control procedure of the present invention is by environment monitor 7 sense ambient temperature, solar radiation quantity, wind speed etc., by these Signal transmissions to supervisory control device 6, database is had in supervisory control device 6, control adjustable inclination angle support 1, change tilt angles, combining inverter 2 perception every road photovoltaic group string DC voltage and current, the signals such as power back-off voltage, exchange grid connection box 3 perception alternating voltage current signal and be transferred to the opening and closing that supervisory control device 6 controls every circuit breaker in combining inverter 2, regulating power, to every road photovoltaic group string working condition, the quality of power supply is monitored, prevent the impact to public electric wire net 4, supervisory control device 6 controls the opening and closing exchanging grid connection box 3 inner breaker, user's lateral load 5 perception electricity consumption situation by Signal transmissions to supervisory control device 6, perform as when user's lateral load 5 not electricity consumption, the circuit breaker connecting user's lateral load 5 is opened, connect the breaker closing of public electric wire net 4, the alternating current that system sends directly is transferred to public electric wire net 4, when user's lateral load 5 electricity consumption but when cannoing be used up, connect the breaker closing of user's lateral load 5 and public electric wire net 4, but have logic precedence relationship, the electricity that system sends is first for user's lateral load 5, and remaining part is transferred to public electric wire net 4, when user's lateral load 5 electricity consumption is abundant, connect the breaker closing of user's lateral load 5, the circuit breaker connecting public electric wire net 4 is opened, the electricity that system sends is all for user's lateral load 5, and the Monitoring Data such as supervisory control device 6 the integration environment, security protection, electric flux, the quality of power supply, classify and process, classification stores, unified interface display Monitoring Data, all communication interfaces are all RS485, easy to operate.
Present invention employs efficient photovoltaic module, adjustable inclination angle support and efficient grid type inverter, therefore generating efficiency is high, overall energy output improves about 10%, have employed supervisory control device simultaneously, control and management is optimized to system, improve the quality of power supply and the fail safe to electrical network, solve existing photovoltaic distributed generation system whole efficiency low and without the defect of optimal control.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
Embodiment:
With reference to Fig. 1, this embodiment by the following technical solutions: it by adjustable inclination angle support 1, combining inverter 2, exchange grid connection box 3, public electric wire net 4, user's lateral load 5, supervisory control device 6, environment monitor 7 form; Adjustable inclination angle support 1 is connected with combining inverter 2, combining inverter 2 is connected with interchange grid connection box 3, exchange grid connection box 3 to be connected with public electric wire net 4 and user's lateral load 5 respectively, user's lateral load 5 is connected with supervisory control device 6, supervisory control device 6 with exchange grid connection box 3 and be interconnected, supervisory control device 6 is connected with adjustable inclination angle support 1, and environment monitor 7 is connected with supervisory control device 6.
Described adjustable inclination angle support 1 is provided with photovoltaic module, when solar irradiation is mapped to photovoltaic module surperficial, photovoltaic module generation photovoltaic effect produces direct current, alternating current is converted to through combining inverter 2, by exchanging grid connection box 3 for user's lateral load 5 electricity consumption, the public electric wire net 4 on electricity when user's lateral load 5 not electricity consumption or electricity cannot be used up, whole process is monitored by supervisory control device 6 and is controlled.
Described photovoltaic module adopts efficient crystal silicon component, stable performance, and transfer ratio is high.
Described adjustable inclination angle support 1 can be manually and electronic two kinds of modes, and it is by staff's solar radiation quantity good according to analytical calculation in advance that manual mode regulates, at the inclination angle of certain Timing support and horizontal plane, it is driven by electro-motor that electronic mode regulates, controlled by supervisory control device 6, supervisory control device 6 li has in advance according to the database that the annual solar radiation quantity in locality is arranged, seasonal regulate the level inclination of support or measure the moment at high noon by environment monitor 7 be irradiated to solar radiation quantity on assembly, signal is passed to supervisory control device 6, then supervisory control device 6 controls electro-motor and regulates level inclination, final raising direct projection is to the solar radiation quantity on photovoltaic module surface, the number of times of leaning angle adjustment in a year is set by database and forms, 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, the energy output of system about 4% can be improved by this.
Described combining inverter 2 is that the direct current sent by photovoltaic module collects and becomes to exchange by DC inversion, it has high conversion efficiency more than 98% compared with conventional inverter, membrane capacitance is used to provide the useful life of system, wide direct voltage input range is up to 1000V, there is the features such as MPPT voltage range is wide, starting resistor is low, conversion efficiency is high, use membrane capacitance technology, add generating efficiency and energy output; Have the function of header box, DC power distribution cabinet, power back-off simultaneously concurrently, decrease the power loss of electric component and direct current cables.
Described interchange grid connection box 3 be alternating current pass through exchange grid connection box 3 be transferred to public electric wire net 4 or user's lateral load 5, exchange grid connection box 3 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 4 side, measures the electricity of online.
Described supervisory control device 6 is monitoring solar radiation amount, temperature, inverter operating state and ruuning situation etc., and controlling the work of adjustable support, the opening and closing of circuit breaker and power dispatching, is improve energy output and power grid security protective device.
Described environment monitor 7 mainly measures the meteorological condition of photovoltaic system locality, as the environmental parameter such as solar irradiation, temperature.
The whole control procedure of this embodiment is by environment monitor 7 sense ambient temperature, solar radiation quantity, wind speed etc., by these Signal transmissions to supervisory control device 6, database is had in supervisory control device 6, control adjustable inclination angle support 1, change tilt angles, combining inverter 2 perception every road photovoltaic group string DC voltage and current, the signals such as power back-off voltage, exchange grid connection box 3 perception alternating voltage current signal and be transferred to the opening and closing that supervisory control device 6 controls every circuit breaker in combining inverter 2, regulating power, to every road photovoltaic group string working condition, the quality of power supply is monitored, prevent the impact to public electric wire net 4, supervisory control device 6 controls the opening and closing exchanging grid connection box 3 inner breaker, user's lateral load 5 perception electricity consumption situation by Signal transmissions to supervisory control device 6, perform as when user's lateral load 5 not electricity consumption, the circuit breaker connecting user's lateral load 5 is opened, connect the breaker closing of public electric wire net 4, the alternating current that system sends directly is transferred to public electric wire net 4, when user's lateral load 5 electricity consumption but when cannoing be used up, connect the breaker closing of user's lateral load 5 and public electric wire net 4, but have logic precedence relationship, the electricity that system sends is first for user's lateral load 5, and remaining part is transferred to public electric wire net 4, when user's lateral load 5 electricity consumption is abundant, connect the breaker closing of user's lateral load 5, the circuit breaker connecting public electric wire net 4 is opened, the electricity that system sends is all for user's lateral load 5, and the Monitoring Data such as supervisory control device 6 the integration environment, security protection, electric flux, the quality of power supply, classify and process, classification stores, unified interface display Monitoring Data, all communication interfaces are all RS485, easy to operate.
This embodiment have employed efficient photovoltaic module, adjustable inclination angle support and efficient grid type inverter, therefore generating efficiency is high, overall energy output improves about 10%, have employed supervisory control device simultaneously, control and management is optimized to system, improve the quality of power supply and the fail safe to electrical network, solve existing photovoltaic distributed generation system whole efficiency low and without the defect of optimal control.
Claims (4)
1. a high efficiency photovoltaic distributed generation system, is characterized in that it is made up of adjustable inclination angle support (1), combining inverter (2), interchange grid connection box (3), public electric wire net (4), user's lateral load (5), supervisory control device (6), environment monitor (7); Adjustable inclination angle support (1) is connected with combining inverter (2), combining inverter (2) is connected with interchange grid connection box (3), exchange grid connection box (3) to be connected with public electric wire net (4) and user's lateral load (5) respectively, user's lateral load (5) is connected with supervisory control device (6), supervisory control device (6) with exchange grid connection box (3) and be interconnected, supervisory control device (6) is connected with adjustable inclination angle support (1), and environment monitor (7) is connected with supervisory control device (6).
2. the high efficiency photovoltaic distributed generation system of one according to claim 1, it is characterized in that the whole control procedure of described photovoltaic distributed generation system is by environment monitor (7) sense ambient temperature, solar radiation quantity, wind speed etc., by these Signal transmissions to supervisory control device (6), supervisory control device has database in (6), control adjustable inclination angle support (1), change tilt angles, combining inverter (2) perception every road photovoltaic group string DC voltage and current, the signals such as power back-off voltage, exchange grid connection box (3) perception alternating voltage current signal and be transferred to the opening and closing that supervisory control device (6) controls every circuit breaker in combining inverter (2), regulating power, to every road photovoltaic group string working condition, the quality of power supply is monitored, prevent the impact to public electric wire net (4), supervisory control device (6) controls the opening and closing exchanging grid connection box (3) inner breaker, user's lateral load (5) perception electricity consumption situation by Signal transmissions to supervisory control device (6), perform as when user's lateral load (5) not electricity consumption, the circuit breaker connecting user's lateral load (5) is opened, connect the breaker closing of public electric wire net (4), the alternating current that system sends directly is transferred to public electric wire net (4), when user's lateral load (5) electricity consumption but when cannoing be used up, connect the breaker closing of user's lateral load (5) and public electric wire net (4), but there is logic precedence relationship, the electricity that system sends is first for user's lateral load (5), and remaining part is transferred to public electric wire net (4), when user's lateral load (5) electricity consumption is abundant, connect the breaker closing of user's lateral load (5), the circuit breaker connecting public electric wire net (4) is opened, the electricity that system sends is all for user's lateral load (5), the Monitoring Data such as supervisory control device (6) the integration environment, security protection, electric flux, the quality of power supply, classification process, classification stores, unified interface display Monitoring Data, all communication interfaces are all RS485.
3. the high efficiency photovoltaic distributed generation system of one according to claim 1, is characterized in that described adjustable inclination angle support (1) is provided with photovoltaic module.
4. the high efficiency photovoltaic distributed generation system of one according to claim 3, is characterized in that described photovoltaic module adopts efficient crystal silicon component.
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| CN201510502341.3A CN105048931A (en) | 2015-08-17 | 2015-08-17 | High-efficiency photovoltaic distributed power generation system |
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| CN201510502341.3A CN105048931A (en) | 2015-08-17 | 2015-08-17 | High-efficiency photovoltaic distributed power generation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465248A (en) * | 2017-08-15 | 2017-12-12 | 华南师范大学 | A kind of control method and device of photovoltaic generating system |
| CN109462367A (en) * | 2018-11-13 | 2019-03-12 | 上海淘科网络技术有限公司 | A kind of photovoltaic plant irradiation value calculates weather station in real time |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2166638A2 (en) * | 2008-09-19 | 2010-03-24 | General Electric Company | Quasi-ac, photovoltaic module for unfolder photovoltaic inverter |
| CN101741281A (en) * | 2009-11-10 | 2010-06-16 | 上海第二工业大学 | Sunflower-type solar energy generating system |
| CN101882643A (en) * | 2009-05-06 | 2010-11-10 | 中国科学院微电子研究所 | Method for manufacturing crystalline silicon high-efficiency solar cell |
| CN202712876U (en) * | 2012-06-28 | 2013-01-30 | 深圳市创益科技发展有限公司 | Solar photovoltaic microgrid grid-connected power generation system |
| 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 |
-
2015
- 2015-08-17 CN CN201510502341.3A patent/CN105048931A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2166638A2 (en) * | 2008-09-19 | 2010-03-24 | General Electric Company | Quasi-ac, photovoltaic module for unfolder photovoltaic inverter |
| CN101882643A (en) * | 2009-05-06 | 2010-11-10 | 中国科学院微电子研究所 | Method for manufacturing crystalline silicon high-efficiency solar cell |
| CN101741281A (en) * | 2009-11-10 | 2010-06-16 | 上海第二工业大学 | Sunflower-type solar energy generating system |
| CN202712876U (en) * | 2012-06-28 | 2013-01-30 | 深圳市创益科技发展有限公司 | Solar photovoltaic microgrid grid-connected power generation system |
| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465248A (en) * | 2017-08-15 | 2017-12-12 | 华南师范大学 | A kind of control method and device of photovoltaic generating system |
| CN109462367A (en) * | 2018-11-13 | 2019-03-12 | 上海淘科网络技术有限公司 | A kind of photovoltaic plant irradiation value calculates weather station in real time |
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Application publication date: 20151111 |