CN202488382U - Solar photovoltaic power station of application model - Google Patents
Solar photovoltaic power station of application model Download PDFInfo
- Publication number
- CN202488382U CN202488382U CN2012201211557U CN201220121155U CN202488382U CN 202488382 U CN202488382 U CN 202488382U CN 2012201211557 U CN2012201211557 U CN 2012201211557U CN 201220121155 U CN201220121155 U CN 201220121155U CN 202488382 U CN202488382 U CN 202488382U
- Authority
- CN
- China
- Prior art keywords
- photovoltaic
- unit
- solar photovoltaic
- protection
- power plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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 relates to a solar photovoltaic power station of an application model, and the solar photovoltaic power station of the application model comprises a maximal power control unit, a photovoltaic module unit, an inverter unit, a protection unit and an electric network, wherein the maximal power control unit, the photovoltaic module unit and the inverter unit are sequentially connected with the electric network, and the maximal power control unit, the photovoltaic module unit and the inverter unit are respectively connected with the protection unit. According to the technical scheme, all units are subjected to modularized design, so that the overall operation stability of the solar photovoltaic power station is improved, and the power generation economic benefit of the solar photovoltaic power station can be enhanced.
Description
Technical field
The utility model relates to a kind of solar photovoltaic power plant, is specifically related to a kind of solar photovoltaic power plant of Application Modeling.
Background technology
The solar photovoltaic power plant impact resistance is poor in the prior art, and whole solar photovoltaic power plant less stable causes the economic benefit of solar photovoltaic power plant generating relatively poor.
Summary of the invention
In order to solve the technical problem that exists in the prior art, the utility model provides a kind of solar photovoltaic power plant structure of Application Modeling.
The technical scheme that the prior art problem that solves the utility model is adopted does; A kind of solar photovoltaic power plant structure of Application Modeling is provided; The solar photovoltaic power plant of said Application Modeling comprises: maximum power control unit, photovoltaic module unit, inverter unit, protected location and electrical network; Wherein, Said maximum power control unit, said photovoltaic module unit, said inverter unit are connected with said electrical network successively, and said maximum power control unit, said photovoltaic module unit and said inverter unit are connected with said protected location respectively.
Optimal technical scheme according to the utility model: the photovoltaic generation in the said photovoltaic module unit utilizes photovoltaic effect, and the topological structure of said photovoltaic module unit comprises: stage photovoltaic single generating, two-stage type photovoltaic generation and/or multistage photovoltaic generation.
Optimal technical scheme according to the utility model: said inverter unit is a voltage source inverter.
Optimal technical scheme according to the utility model: said protected location comprises overvoltage protection, under-voltage protection, frequency protection, overcurrent and short circuit current protection and Voltage unbalance protection.
The utility model technical scheme has improved the stability of the overall operation of solar photovoltaic power plant running through each unit is carried out modularized design, has strengthened the economic benefit of solar photovoltaic power plant generating.
Description of drawings
The solar photovoltaic power plant modular structure sketch map of Fig. 1 Application Modeling.
Embodiment
Below in conjunction with accompanying drawing the utility model technical scheme is described:
See also the solar photovoltaic power plant modular structure sketch map of Fig. 1 Application Modeling.As shown in Figure 1; The solar photovoltaic power plant of said Application Modeling comprises: maximum power control unit 101, photovoltaic module unit 102, inverter unit 103, protected location 105 and electrical network 104; Wherein, Said maximum power control unit 101, said photovoltaic module unit 102, said inverter unit 103 are connected with said electrical network 104 successively, and said maximum power control unit 101, said photovoltaic module unit 102 are connected with said protected location 105 respectively with said inverter unit 103.
In the utility model technical scheme; The main employing of said maximum power control unit 101 (MPPT) decided voltage-tracing (CVT) control model; The advantage of this control method is that control is simple, convenient, reliability is high, the quality of power supply good; And vibration can not appear in system, has certain low voltage ride-through capability and has stability preferably.
In the utility model technical scheme, the photovoltaic generation in the said photovoltaic module unit 102 is to utilize photovoltaic effect, makes solar radiation can be transformed into the generation mode of electric energy, is the main flow of current solar power generation.Photovoltaic module unit 102 generating generally partly is made up of photovoltaic array, variable power device, controller etc., and it has following characteristics: photovoltaic battery panel directly converts sunlight to direct current, is the elementary cell of photovoltaic generating system.Photovoltaic battery panel is the core component of solar photovoltaic generation system, and it receives extraneous intensity of sunshine and influence of temperature change bigger; Power inverter is to convert direct current to alternating current; It is the indispensable link that photovoltaic generating system is connected with AC network; It realizes that mainly stablizing of inverter input terminal voltage and grid-connected current and line voltage with the frequency homophase, promptly are output as pure active power under perfect condition, and idle is 0; Controller is the solar energy that utilizes of maximal efficiency, adopts maximal power tracing control technology (MPPT), remains at maximum to guarantee the photovoltaic array power output.
The topological structure of said photovoltaic module unit 102 mainly contains stage photovoltaic single generating, two-stage type photovoltaic generation and multistage photovoltaic generation.
In the utility model technical scheme; Said inverter unit 103 adopts the dicyclo control strategy; Interior ring adopts current control mode, the AC side output current of major control inverter, and outer shroud adopts voltage control mode; The DC side input voltage of major control inverter is so that inverter is operated within the normal operating mode scope.
In the utility model technical scheme, said protected location 105 comprises overvoltage protection, under-voltage protection, frequency protection, overcurrent and short circuit current protection and Voltage unbalance protection.
Wherein, said mistake/under voltage protection is that the photovoltaic module unit should stop to grid transmission when the voltage range of electrical network interface voltage overshoot.System should be able to detect abnormal voltage and make a response.
Frequency protection: mistake/underfrequency protection is when the frequency range of electrical network 104 interface frequency overshoots, should at the appointed time photovoltaic system and electrical network 104 be broken off.Big-and-middle-sized photovoltaic plant should possess certain frequency ride-through capability.
Overcurrent protection: photovoltaic plant need possess certain overcurrent capability, and at 120% times below the rated current, the continuous reliably working time of photovoltaic plant is not less than 1 minute; In the 120%-150% rated current, the continuous reliably working time of photovoltaic plant should be not less than 10 seconds.When detecting electrical network 104 sides and be short-circuited, photovoltaic plant should be not more than 150% of rated current to the short circuit current of electrical network 104 outputs, and at 0.1S with interior with photovoltaic system and electrical network 104 disconnections.
The Voltage unbalance protection: when photovoltaic system was incorporated into the power networks (only to three-phase output), the negative sequence voltage degree of unbalance of electrical network 104 interfaces should be no more than 2%, must not surpass 4% in short-term.The computing formula of negative sequence voltage degree of unbalance is the ratio of negative sequence voltage and positive sequence voltage.
In the utility model technical scheme; Through the maximum output under the said photovoltaic module of the said maximum power control unit 101 controls unit 102 realization stable states; And change the back through said inverter unit 103 and insert electrical network 104; Realize protection through protected location 105105 in the transfer process, so that the normal operation of the solar photovoltaic power plant of Application Modeling to said maximum power control unit 101, said photovoltaic module unit 102 and said inverter unit 103.
The utility model technical scheme has improved the stability of the overall operation of solar photovoltaic power plant running through each unit is carried out modularized design, has strengthened the economic benefit of solar photovoltaic power plant generating.
Above content is the further explain that combines concrete optimal technical scheme that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.
Claims (4)
1. the solar photovoltaic power plant of an Application Modeling; It is characterized in that: the solar photovoltaic power plant of said Application Modeling comprises: maximum power control unit (101), photovoltaic module unit (102), inverter unit (103), protected location (105) and electrical network (104); Wherein, Said maximum power control unit (101), said photovoltaic module unit (102), said inverter unit (103) and said electrical network (104) are connected successively, and said maximum power control unit (101), said photovoltaic module unit (102) and said inverter unit (103) are connected with said protected location (105) respectively.
2. according to the solar photovoltaic power plant of the said Application Modeling of claim 2; It is characterized in that: the photovoltaic generation in the said photovoltaic module unit (102) utilizes photovoltaic effect, and the topological structure of said photovoltaic module unit (102) comprising: stage photovoltaic single generating, two-stage type photovoltaic generation and/or multistage photovoltaic generation.
3. according to the solar photovoltaic power plant of the said Application Modeling of claim 2, it is characterized in that: said inverter unit (103) is a voltage source inverter.
4. according to the solar photovoltaic power plant of the said Application Modeling of claim 3, it is characterized in that: said protected location (105) comprises overvoltage protection, under-voltage protection, frequency protection, overcurrent and short circuit current protection and Voltage unbalance protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201211557U CN202488382U (en) | 2012-03-28 | 2012-03-28 | Solar photovoltaic power station of application model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201211557U CN202488382U (en) | 2012-03-28 | 2012-03-28 | Solar photovoltaic power station of application model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202488382U true CN202488382U (en) | 2012-10-10 |
Family
ID=46962769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201211557U Expired - Lifetime CN202488382U (en) | 2012-03-28 | 2012-03-28 | Solar photovoltaic power station of application model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202488382U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124080A (en) * | 2013-02-04 | 2013-05-29 | 中国电力科学研究院 | Modeling method for photovoltaic power generation system model |
-
2012
- 2012-03-28 CN CN2012201211557U patent/CN202488382U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124080A (en) * | 2013-02-04 | 2013-05-29 | 中国电力科学研究院 | Modeling method for photovoltaic power generation system model |
| CN103124080B (en) * | 2013-02-04 | 2015-07-08 | 国家电网公司 | Modeling method for photovoltaic power generation system model |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201194333Y (en) | Solar photovoltaic parallel-in system | |
| CN102013692B (en) | Solar energy generating system and control method of header box thereof | |
| CN101710716A (en) | Grid-connected inverter capable of reducing electrolytic capacitance | |
| CN105515167A (en) | Uninterruptible power supply UPS device and power supply method thereof | |
| CN103986155A (en) | Micro-grid control system | |
| CN102624288A (en) | AC (Alternating Current) solar energy module and electrical energy dispatching method | |
| CN203951202U (en) | Micro-mains supply system for a kind of wind light mutual complementing family | |
| CN100395935C (en) | High-power wind power generation interconnection technology | |
| CN202260519U (en) | Wind-solar hybrid power supply system | |
| CN108347067A (en) | A kind of microgrid framework and control method containing battery energy storage and generator | |
| CN203590148U (en) | Intelligent solar photovoltaic module junction box | |
| Xu et al. | Energy management and control strategy for DC micro-grid in data center | |
| CN204947612U (en) | A kind of stable view energy source Blast Furnace Top Gas Recovery Turbine Unit (TRT) | |
| CN203261257U (en) | Solar photovoltaic power generation single-phase grid-connected inverter | |
| CN202488382U (en) | Solar photovoltaic power station of application model | |
| CN202564966U (en) | Photovoltaic system | |
| CN104682425A (en) | Alternating-current microgrid control system | |
| CN203491711U (en) | Distributed power generation grid-connected control system | |
| CN204046508U (en) | Photovoltaic DC-to-AC converter and air conditioner | |
| CN203312804U (en) | Renewable energy combination electrical network system | |
| CN202424199U (en) | Device and system with high-frequency reverse transmission and unidirectional transmission functions | |
| CN202424198U (en) | Sunlight automatic sensing system for grid-connected inverter | |
| CN204349462U (en) | A kind of micro-capacitance sensor control device of photovoltaic distributed power source | |
| CN204668981U (en) | Alternating current-direct current variable-frequency variable-voltage photovoltaic intelligent electricity generation system | |
| CN203261044U (en) | Photovoltaic grid connected controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CGNPC solar Development Co. Ltd. (Dacaidan) Assignor: CGN Solar Energy Development Co., Ltd. Contract record no.: 2013990000258 Denomination of utility model: Solar photovoltaic power station of application model Granted publication date: 20121010 License type: Exclusive License Record date: 20130520 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |