CN102723896A - Photovoltaic power generation system - Google Patents

Photovoltaic power generation system Download PDF

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Publication number
CN102723896A
CN102723896A CN2012102070226A CN201210207022A CN102723896A CN 102723896 A CN102723896 A CN 102723896A CN 2012102070226 A CN2012102070226 A CN 2012102070226A CN 201210207022 A CN201210207022 A CN 201210207022A CN 102723896 A CN102723896 A CN 102723896A
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CN
China
Prior art keywords
power generation
inverter
solar
generation system
photovoltaic power
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Pending
Application number
CN2012102070226A
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Chinese (zh)
Inventor
姚建歆
周曞昕
郑季伟
徐剑
顾临峰
李志龙
王国友
倪东海
程正敏
唐海强
王飙
徐刚
周静
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Shanghai Electric Power Corp
State Grid Corp of China SGCC
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State Grid Shanghai Electric Power Co Ltd
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Priority to CN2012102070226A priority Critical patent/CN102723896A/en
Publication of CN102723896A publication Critical patent/CN102723896A/en
Pending legal-status Critical Current

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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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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a photovoltaic power generation system, which comprises a solar charging and discharging controller, a solar battery array, an energy storage device and an inverter, wherein the solar battery array, the energy storage device and the inverter are respectively connected with the solar charging and discharging controller, and the solar charging and discharging controller comprises: the solar charging and discharging controller is also connected with a direct current load; the inverter is connected with an alternating current power grid. The invention has simple structure and low cost and can convert solar energy into electric energy with larger conversion rate.

Description

一种光伏发电系统A photovoltaic power generation system

技术领域 technical field

本发明涉及一种光伏发电系统。The invention relates to a photovoltaic power generation system.

背景技术 Background technique

光伏发电是利用光生伏打效应，使太阳光辐射能转变成电能的发电方式，是当今太阳光发电的主流。光伏效应就是当物体受到光照射时，物体内的电荷分布状态发生变化而产生电动势和电流的一种效应。光伏发电系统是利用太阳能电池直接将太阳能转换成电能的发电系统，其特点是可靠性高、使用寿命长、不污染环境、能独立发电又能并网运行，受到各国企业组织的青睐，具有广阔的发展前景。目前，光伏发电系统大多存在结构复杂、制造成本高昂、电能转化效率低等特点。Photovoltaic power generation is a power generation method that uses the photovoltaic effect to convert solar radiation energy into electrical energy, and is the mainstream of solar power generation today. Photovoltaic effect is an effect that when an object is irradiated by light, the charge distribution state in the object changes to generate electromotive force and current. Photovoltaic power generation system is a power generation system that uses solar cells to directly convert solar energy into electrical energy. It is characterized by high reliability, long service life, no pollution to the environment, independent power generation and grid-connected operation, and is favored by enterprises and organizations in various countries. It has broad development prospects. At present, most photovoltaic power generation systems have the characteristics of complex structure, high manufacturing cost, and low power conversion efficiency.

发明内容 Contents of the invention

本发明的目的在于提供一种结构简单、成本低廉、能够将太阳能以较大的转化率转化成电能并且能够蓄存电能的光伏发电系统。The object of the present invention is to provide a photovoltaic power generation system with simple structure and low cost, which can convert solar energy into electric energy with a large conversion rate and store electric energy.

实现上述目的的技术方案是：The technical scheme for realizing the above-mentioned purpose is:

一种光伏发电系统，外接直流负载和交流电网，所述光伏发电系统包括太阳能充放电控制器，以及分别连接该太阳能充放电控制器的太阳能电池阵列、储能装置和逆变器，其中：A photovoltaic power generation system, externally connected to a DC load and an AC grid, the photovoltaic power generation system includes a solar charge and discharge controller, and a solar cell array, an energy storage device, and an inverter respectively connected to the solar charge and discharge controller, wherein:

所述太阳能充放电控制器还连接所述直流负载；The solar charge and discharge controller is also connected to the DC load;

所述逆变器连接所述交流电网。The inverter is connected to the AC grid.

上述的光伏发电系统，其中，所述储能装置为储能蓄电池。In the above photovoltaic power generation system, the energy storage device is an energy storage battery.

上述的光伏发电系统，其中，所述逆变器为DC-AC（直流转交流）逆变器。In the above photovoltaic power generation system, the inverter is a DC-AC (direct current to alternating current) inverter.

本发明的有益效果是：本发明结构简单，成本低廉，能较大限度地将太阳能转化成电能，从而提高整个系统的发电效率；并且，本发明具有蓄存电能的功能，保证了系统供电的连续性和稳定性。The beneficial effects of the present invention are: the present invention is simple in structure, low in cost, and can convert solar energy into electric energy to a maximum extent, thereby improving the power generation efficiency of the entire system; moreover, the present invention has the function of storing electric energy, ensuring the power supply of the system continuity and stability.

附图说明 Description of drawings

图1是本发明的光伏发电系统的结构图。Fig. 1 is a structural diagram of the photovoltaic power generation system of the present invention.

具体实施方式 Detailed ways

下面将结合附图对本发明作进一步说明。The present invention will be further described below in conjunction with accompanying drawing.

请参阅图1，本发明的光伏发电系统，外接直流负载200和交流电网300，所述光伏发电系统包括太阳能充放电控制器1，以及分别连接太阳能充放电控制器1的太阳能电池阵列2、储能装置3和逆变器4，其中：Please refer to Fig. 1, the photovoltaic power generation system of the present invention is externally connected with a DC load 200 and an AC power grid 300, and the photovoltaic power generation system includes a solar charge and discharge controller 1, and a solar cell array 2 and a storage battery connected to the solar charge and discharge controller 1 respectively. Energy device 3 and inverter 4, wherein:

太阳能充放电控制器1还连接直流负载200；逆变器4连接交流电网300。The solar charge and discharge controller 1 is also connected to a DC load 200 ; the inverter 4 is connected to an AC grid 300 .

太阳能电池阵列2是由若干太阳能电池组件按串并联方式连接形成的较大容量的方阵，将太阳辐射能直接转化为直流电能；The solar cell array 2 is a large-capacity square array formed by connecting several solar cell components in series and parallel, and directly converts solar radiation energy into DC electric energy;

太阳能充放电控制器1使本发明始终处于发电的最大功率点附近，以获得最高效率；采用脉冲宽度调制技术，根据实际情况，将太阳能电池阵列2产生的直流电能直接供给直流负载200或者传输到储能装置3中进行蓄存，同时将获自太阳能电池阵列2或者储能装置3的直流电能传输给逆变器4，从而经逆变器4转化为交流电，供给交流电网300。The solar charge and discharge controller 1 keeps the present invention near the maximum power point of power generation to obtain the highest efficiency; adopts pulse width modulation technology, and according to the actual situation, directly supplies the DC power generated by the solar cell array 2 to the DC load 200 or transmits it to the Storage is performed in the energy storage device 3 , and at the same time, the DC power obtained from the solar cell array 2 or the energy storage device 3 is transmitted to the inverter 4 , so that it is converted into AC power by the inverter 4 and supplied to the AC grid 300 .

本实施例中，储能装置3为储能蓄电池；逆变器4为DC-AC逆变器。In this embodiment, the energy storage device 3 is an energy storage battery; the inverter 4 is a DC-AC inverter.

本发明结构简单，成本低廉，能较大限度地将太阳能转化成电能，具有很高的发电效率。The invention has simple structure and low cost, can convert solar energy into electric energy to a maximum extent, and has high power generation efficiency.

以上实施例仅供说明本发明之用，而非对本发明的限制，有关技术领域的技术人员，在不脱离本发明的精神和范围的情况下，还可以作出各种变换或变型，因此所有等同的技术方案也应该属于本发明的范畴，应由各权利要求所限定。The above embodiments are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent The technical solutions should also belong to the category of the present invention and should be defined by each claim.

Claims (3)

1. photovoltaic generating system; External DC load and AC network is characterized in that, said photovoltaic generating system comprises the solar charging/discharging controller; And the solar battery array, energy storage device and the inverter that connect this solar charging/discharging controller respectively, wherein:
Said solar charging/discharging controller also connects said DC load;
Said inverter connects said AC network.
2. photovoltaic generating system according to claim 1 is characterized in that, said energy storage device is an energy storage battery.
3. photovoltaic generating system according to claim 1 is characterized in that, said inverter is the DC-AC inverter.
CN2012102070226A 2012-06-21 2012-06-21 Photovoltaic power generation system Pending CN102723896A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012102070226A CN102723896A (en) 2012-06-21 2012-06-21 Photovoltaic power generation system

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Application Number Priority Date Filing Date Title
CN2012102070226A CN102723896A (en) 2012-06-21 2012-06-21 Photovoltaic power generation system

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110084551A1 (en) * 2009-10-12 2011-04-14 Robert Johnson Photovoltaic system with managed output
CN202121531U (en) * 2011-07-16 2012-01-18 武夷山市鑫泰光电有限公司 Solar energy photovoltaic power supply system
CN202261081U (en) * 2011-05-16 2012-05-30 武汉纺织大学 Solar photovoltaic grid-connected and grid-disconnected hybrid power generating system
CN202713194U (en) * 2012-06-21 2013-01-30 上海市电力公司 Photovoltaic power generation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110084551A1 (en) * 2009-10-12 2011-04-14 Robert Johnson Photovoltaic system with managed output
CN202261081U (en) * 2011-05-16 2012-05-30 武汉纺织大学 Solar photovoltaic grid-connected and grid-disconnected hybrid power generating system
CN202121531U (en) * 2011-07-16 2012-01-18 武夷山市鑫泰光电有限公司 Solar energy photovoltaic power supply system
CN202713194U (en) * 2012-06-21 2013-01-30 上海市电力公司 Photovoltaic power generation system

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ASS Succession or assignment of patent right

Owner name: STATE ELECTRIC NET CROP.

Effective date: 20121026

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Effective date of registration: 20121026

Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122

Applicant after: Shanghai Electric Power Corporation

Applicant after: State Grid Corporation of China

Address before: 200122 Shanghai City, Pudong New Area source deep road, No. 1122

Applicant before: Shanghai Electric Power Corporation

C10 Entry into substantive examination
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Application publication date: 20121010