CN203377609U - A photovoltaic grid-connected energy storage uninterrupted power system capable of selecting solar energy preferentially - Google Patents
A photovoltaic grid-connected energy storage uninterrupted power system capable of selecting solar energy preferentially Download PDFInfo
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- CN203377609U CN203377609U CN201320488751.3U CN201320488751U CN203377609U CN 203377609 U CN203377609 U CN 203377609U CN 201320488751 U CN201320488751 U CN 201320488751U CN 203377609 U CN203377609 U CN 203377609U
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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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Abstract
The utility model relates to the field of photovoltaic energy storage, specifically to the field of uninterrupted power supply. The utility model especially provides a photovoltaic grid-connected energy storage uninterrupted power system capable of selecting solar energy preferentially. The photovoltaic grid-connected energy storage uninterrupted power system comprises a solar cell panel, a grid-connected inverter for DC/AC conversion of electric energy output by the solar cell panel, a photovoltaic system sampling unit used for collecting the photovoltaic system power, an energy storage device used for storing energy or releasing energy, and a controller used for automatically selecting and controlling the grid-connected inverter, the energy storage device and the mains supply power grid for power supply for loads according to the magnitude of the photovoltaic system power. Under the condition of grid connection of the photovoltaic system and the mains supply power grid, the controller automatically selects and preferentially utilizes the generated energy of the photovoltaic system for power supply for the loads according to the comparison result between the magnitude of the photovoltaic system power collected in real time by the photovoltaic system sampling unit and the magnitude of the load power and the quantity of the stored energy of the energy storage device, so that the solar energy can be utilized to the maximum, the demand for the electric energy of the mains supply power grid is reduced, the effects of energy conservation and environmental protection are achieved, and greater economic effects can be created.
Description
Technical field
The utility model relates to the photovoltaic energy storage field, is specifically related to the uninterrupted power supply field, relates in particular to the preferential grid-connected energy storage uninterruptible power system of a kind of solar energy.
Background technology
Day by day in short supply along with world energy sources, tap a new source of energy and regenerative resource is subject to the attention of countries in the world gradually.Solar energy power generating is safe, energy-conservation, pollution-free, has obtained people and has more and more paid close attention to, and has been now the important directions that world's new energy field develops.The application of solar energy has been penetrated into the every aspect of people's life, generally, electric power system is grid-connected photovoltaic system and utility grid, two nets are load supplying together, although such way can be saved the power consumption of utility grid, but, due to the preferential automatic configuration system of selecting to utilize solar energy between photovoltaic system and utility grid not, the utilance of photovoltaic system energy output or not high enough, the electric weight of utility grid is also existed to very large wasting phenomenon.
The utility model content
The purpose of this utility model is to propose the preferential grid-connected energy storage uninterruptible power system of a kind of solar energy, in the situation that photovoltaic system and utility grid are grid-connected, automatically the energy output of preferential selection photovoltaic system is load supplying, maximum using solar energy, energy-conserving and environment-protective are also created maximized economic benefit.
For reaching this purpose, the utility model by the following technical solutions:
The grid-connected energy storage uninterruptible power system that a kind of solar energy is preferential, comprise: for solar energy being converted to the solar panel of electric energy, the combining inverter that carries out the DC/AC conversion for the electric energy by solar panel output, photovoltaic system sampling unit for the photovoltaic system power that gathers combining inverter output, for energy storage or release can energy storage device, electric energy is provided and provides electric energy and powering load to utility grid to energy storage device for control combining inverter when photovoltaic system power is more than or equal to bearing power, when being less than bearing power and energy storage device stored energy and being more than or equal to predetermined threshold value, photovoltaic system power controls combining inverter and energy storage device while powering load, when being less than bearing power and energy storage device stored energy and being less than predetermined threshold value, photovoltaic system power controls combining inverter and the utility grid controller of powering load simultaneously, the output of solar panel is connected with the input of combining inverter, the output of combining inverter is connected with the signals collecting end of utility grid, photovoltaic system sampling unit, the electric energy input of energy storage device, the signal output part of photovoltaic system sampling unit is connected with the signal input part of controller, the control output end of controller is connected with the control end of energy storage device, and the electric energy output end of energy storage device is connected with load.
Wherein, described energy storage device comprises rectifier, compensating controller, relay, battery pack, controllable silicon, full-bridge inverter, filter and isolating transformer; The input of described rectifier connects the control output end of described controller, the output of rectifier connects the input of compensating controller, the output of compensating controller connect full-bridge inverter input, and be connected battery pack by relay with controllable silicon respectively, the output of full-bridge inverter connects the input of filter, the output of filter connects the input of isolating transformer, and the output of isolating transformer connects load.
Wherein, the output of described combining inverter connects an output ammeter, and the output of utility grid connects an input ammeter.
Wherein, described photovoltaic system sampling unit comprises data acquisition circuit for gathering the photovoltaic system power data and the data transmission circuit of transmission power data, the output of data acquisition circuit is connected with the input of data transmission circuit, and the output of data transmission circuit is connected with the signal input part of controller.
Wherein, described controller is the DSP control chip.
Wherein, described DSP control chip is the high-speed dsp control chip.
Wherein, described compensating controller is for controlling the DC/DC booster circuit of power output, and itself and DSP control chip are electrically connected.
Wherein, described DC/DC booster circuit is single BOOST circuit.
Wherein, described isolating transformer is output isolation boosting transformer.
The beneficial effects of the utility model are: the grid-connected energy storage uninterruptible power system that a kind of solar energy is preferential, comprise solar panel, the combining inverter that the electric energy of solar panel output is carried out to the DC/AC conversion, gather the photovoltaic system sampling unit of photovoltaic system power, for energy storage or release can energy storage device, for automatically select to control the controller of combining inverter, energy storage device and utility grid powering load according to the photovoltaic system watt level.In the situation that photovoltaic system and utility grid are grid-connected, controller is according to the number of big or small comparing result and the energy storage device stored energy of the relative bearing power of photovoltaic system power of photovoltaic system sampling unit Real-time Collection, it is load supplying that automatic selection preferentially utilizes the energy output of photovoltaic system, maximum using solar energy, reduce the demand to the utility grid electric energy, energy-conserving and environment-protective are also created larger economic benefit.
The accompanying drawing explanation
Fig. 1 is the structural representation of the preferential grid-connected energy storage uninterruptible power system of a kind of solar energy of providing of the utility model embodiment 1;
Fig. 2 is the first mode of operation power flow schematic diagram of the preferential grid-connected energy storage uninterruptible power system of a kind of solar energy of providing of the utility model embodiment 1;
Fig. 3 is the second mode of operation power flow schematic diagram of the preferential grid-connected energy storage uninterruptible power system of a kind of solar energy of providing of the utility model embodiment 1;
Fig. 4 is the 3rd mode of operation power flow schematic diagram of the preferential grid-connected energy storage uninterruptible power system of a kind of solar energy of providing of the utility model embodiment 1;
Fig. 5 is the 4th mode of operation power flow schematic diagram of the preferential grid-connected energy storage uninterruptible power system of a kind of solar energy of providing of the utility model embodiment 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the utility model, but not to restriction of the present utility model.It also should be noted that, for convenience of description, only show the part relevant to the utility model in accompanying drawing but not full content.
The structural representation of the grid-connected energy storage uninterruptible power system that a kind of solar energy provided for the utility model embodiment 1 as shown in Figure 1, is preferential.
The grid-connected energy storage uninterrupted power supply (UPS that a kind of solar energy is preferential, Uninterruptible Power System) system, comprise: for solar energy being converted to the solar panel of electric energy, the combining inverter that carries out the DC/AC conversion for the electric energy by solar panel output, photovoltaic system sampling unit for the photovoltaic system power that gathers combining inverter output, for energy storage or release can energy storage device, electric energy is provided and provides electric energy and powering load to utility grid to energy storage device for control combining inverter when photovoltaic system power is more than or equal to bearing power, when being less than bearing power and energy storage device stored energy and being more than or equal to predetermined threshold value, photovoltaic system power controls combining inverter and energy storage device while powering load, when being less than bearing power and energy storage device stored energy and being less than predetermined threshold value, photovoltaic system power controls combining inverter and the utility grid controller of powering load simultaneously, the output of solar panel is connected with the input of combining inverter, the output of combining inverter is connected with the signals collecting end of utility grid, photovoltaic system sampling unit, the electric energy input of energy storage device, the signal output part of photovoltaic system sampling unit is connected with the signal input part of controller, the control output end of controller is connected with the control end of energy storage device, and the electric energy output end of energy storage device is connected with load.
The grid-connected energy storage uninterruptible power system that a kind of solar energy is preferential, in the situation that photovoltaic system and utility grid are grid-connected, controller is according to the number of big or small comparing result and the energy storage device stored energy of the relative bearing power of photovoltaic system power of photovoltaic system sampling unit Real-time Collection, it is load supplying that automatic selection preferentially utilizes the energy output of photovoltaic system, maximum using solar energy, reduce the demand to the utility grid electric energy, energy-conserving and environment-protective are also created larger economic benefit.
Wherein, described energy storage device comprises rectifier, compensating controller, relay, battery pack, controllable silicon, full-bridge inverter, filter and isolating transformer; The input of described rectifier connects the control output end of described controller, the output of rectifier connects the input of compensating controller, the output of compensating controller connect full-bridge inverter input, and be connected battery pack by relay with controllable silicon respectively, the output of full-bridge inverter connects the input of filter, the output of filter connects the input of isolating transformer, and the output of isolating transformer connects load.
Described battery pack directly accesses DC bus.
Wherein, the output of described combining inverter connects an output ammeter, and the output of utility grid connects an input ammeter.
Photovoltaic system comprises solar panel and combining inverter.The output ammeter that the output of described combining inverter connects is measured the electric energy of photovoltaic system output.
The output of utility grid connects an input ammeter, when photovoltaic system provides electric energy to utility grid, and the input that the output of utility grid is electric energy, when the utility grid powering load, the output that the output of utility grid is electric energy.
Wherein, described photovoltaic system sampling unit comprises data acquisition circuit for gathering the photovoltaic system power data and the data transmission circuit of transmission power data, the output of data acquisition circuit is connected with the input of data transmission circuit, and the output of data transmission circuit is connected with the signal input part of controller.The power data that the photovoltaic system sampling unit provides the solar panel through the DC/AC conversion of Real-time Collection to export for controller.
Wherein, described controller is the DSP control chip.
Wherein, described DSP control chip is the high-speed dsp control chip.
The rectifier of described ups system, compensating controller, full-bridge inverter all utilize the DSP control chip to complete control.
Wherein, described compensating controller is for controlling the DC/DC booster circuit of power output, and itself and DSP control chip are electrically connected.
Wherein, described DC/DC booster circuit is single BOOST circuit.
Wherein, described isolating transformer is output isolation boosting transformer.
The grid-connected energy storage ups system that the solar energy the utility model proposes is preferential, on traditional energy storage basis, improved, realize the automatic control to the DC/DC booster circuit according to the photovoltaic system power data of photovoltaic system sampling unit Real-time Collection, then realize the energy storage device energy storage or release the preferred control that can change; Realize load to the maximum using of photovoltaic system power output, reduce the demand to the utility grid electric energy, supply power mode is various, system effectiveness is high and be that the user is cost-saving, realizes the safety of maximum economic benefit, electrical energy saving cost proof load simultaneously.
As shown in Fig. 2 to 5, be respectively the first, the second, the third and the 4th kind of mode of operation power flow schematic diagram of the preferential grid-connected energy storage ups system of solar energy that the utility model embodiment 1 provides.In figure, arrow line represents power flow.
As shown in Figure 2, the first mode of operation is when should photovoltaic system power being more than or equal to bearing power, and controller is controlled combining inverter and electric energy is provided and provides electric energy and powering load to utility grid to energy storage device.Controller control and compensation controller is opened fully, makes the voltage of busbar voltage higher than battery pack, and flowing of electric energy must be to flow to load and utility grid by photovoltaic system so.
As shown in Figure 3, when the second mode of operation is more than or equal to predetermined threshold value to should photovoltaic system power being less than bearing power and energy storage device stored energy, controller is controlled combining inverter and energy storage device while powering load.Preferably, predetermined threshold value is 70% of battery pack Full Charge Capacity, the setting of battery pack predetermined threshold value is not cut off the power supply with proof load, guarantee again to reduce the prerequisite that is utilized as to utility grid simultaneously as far as possible, the duty ratio of controller control and compensation controller makes busbar voltage be less than the cell voltage of battery pack, and the power data real-time transform duty ratio gathered according to the photovoltaic system sampling unit.
As shown in Figure 4, when the third mode of operation is less than predetermined threshold value to should photovoltaic system power being less than bearing power and energy storage device stored energy, controller is controlled combining inverter and utility grid powering load simultaneously.Controller control and compensation controller is opened fully, turn-offs battery pack.
As shown in Figure 5, the 4th kind of mode of operation to should the output of photovoltaic system inactivity the time, be so just turn-offed compensating controller, fully by the energy storage device powering load.Opening of relay and SCR control battery pack, now, ups system is without the input of civil power electric energy, and by battery pack, releasing can powering load.
The control key of above mode of operation is to take that the photovoltaic system power data of photovoltaic system sampling unit Real-time Collection is basis, the power provided according to actual loading size and photovoltaic system is regulated the pulse width modulation of compensating controller, and adjust the pulse width modulation of ups system full-bridge inverter, the final automatic control realized power output simultaneously.
The operation principle that the utility model uninterrupted power supply is detailed and control method are prior art, at this, just have been not repeated.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, on its embodiment and range of application, all will change, this description should not be construed as restriction of the present utility model.
Claims (9)
1. the grid-connected energy storage uninterruptible power system that solar energy is preferential, it is characterized in that, comprise: for solar energy being converted to the solar panel of electric energy, the combining inverter that carries out the DC/AC conversion for the electric energy by solar panel output, photovoltaic system sampling unit for the photovoltaic system power that gathers combining inverter output, for energy storage or release can energy storage device, electric energy is provided and provides electric energy and powering load to utility grid to energy storage device for control combining inverter when photovoltaic system power is more than or equal to bearing power, when being less than bearing power and energy storage device stored energy and being more than or equal to predetermined threshold value, photovoltaic system power controls combining inverter and energy storage device while powering load, when being less than bearing power and energy storage device stored energy and being less than predetermined threshold value, photovoltaic system power controls combining inverter and the utility grid controller of powering load simultaneously, the output of solar panel is connected with the input of combining inverter, the output of combining inverter is connected with the signals collecting end of utility grid, photovoltaic system sampling unit, the electric energy input of energy storage device, the signal output part of photovoltaic system sampling unit is connected with the signal input part of controller, the control output end of controller is connected with the control end of energy storage device, and the electric energy output end of energy storage device is connected with load.
2. the preferential grid-connected energy storage uninterruptible power system of solar energy according to claim 1, it is characterized in that, described energy storage device comprises rectifier, compensating controller, relay, battery pack, controllable silicon, full-bridge inverter, filter and isolating transformer; The input of described rectifier connects the control output end of described controller, the output of rectifier connects the input of compensating controller, the output of compensating controller connect full-bridge inverter input, and be connected battery pack by relay with controllable silicon respectively, the output of full-bridge inverter connects the input of filter, the output of filter connects the input of isolating transformer, and the output of isolating transformer connects load.
3. the preferential grid-connected energy storage uninterruptible power system of solar energy according to claim 1, is characterized in that, the output of described combining inverter connects an output ammeter, and the output of utility grid connects an input ammeter.
4. the preferential grid-connected energy storage uninterruptible power system of solar energy according to claim 1, it is characterized in that, described photovoltaic system sampling unit comprises data acquisition circuit for gathering the photovoltaic system power data and the data transmission circuit of transmission power data, the output of data acquisition circuit is connected with the input of data transmission circuit, and the output of data transmission circuit is connected with the signal input part of controller.
5. the preferential grid-connected energy storage uninterruptible power system of solar energy according to claim 1, is characterized in that, described controller is the DSP control chip.
6. the preferential grid-connected energy storage uninterruptible power system of solar energy according to claim 5, is characterized in that, described DSP control chip is the high-speed dsp control chip.
7. the preferential grid-connected energy storage uninterruptible power system of solar energy according to claim 5, is characterized in that, described compensating controller is for controlling the DC/DC booster circuit of power output, and itself and DSP control chip are electrically connected.
8. the preferential grid-connected energy storage uninterruptible power system of solar energy according to claim 7, is characterized in that, described DC/DC booster circuit is single BOOST circuit.
9. the preferential grid-connected energy storage uninterruptible power system of solar energy according to claim 2, is characterized in that, described isolating transformer is output isolation boosting transformer.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269880A (en) * | 2014-09-12 | 2015-01-07 | 国网上海市电力公司 | Unit photovoltaic and triple co-generation grid-connection electricity generation system |
| CN105680471A (en) * | 2014-12-04 | 2016-06-15 | Abb技术股份公司 | Apparatus for the conversion and optimized consumption management of power from renewable sources |
| CN106602604A (en) * | 2016-12-30 | 2017-04-26 | 国家电网公司 | Solar energy and municipal power cooperation power supply station UPS power control system |
| CN107294132A (en) * | 2017-06-29 | 2017-10-24 | 山东新华联智能光伏有限公司 | Photovoltaic parallel in system |
| CN107332270A (en) * | 2016-04-29 | 2017-11-07 | 伊顿飞瑞慕品股份有限公司 | Energy management apparatus for grid-connected photovoltaic system |
| CN107769204A (en) * | 2017-12-04 | 2018-03-06 | 郑州云海信息技术有限公司 | A kind of container data center and its method of supplying power to |
| CN108258678A (en) * | 2018-04-02 | 2018-07-06 | 杨广凌 | A kind of solar energy system and its method for supplying electricity to multi-load unit |
| CN109556054A (en) * | 2018-10-30 | 2019-04-02 | 长春理工大学光电信息学院 | A kind of solar street light of Internet of Things intelligent control |
| CN114144952A (en) * | 2019-07-25 | 2022-03-04 | 智能追踪识别有限公司 | Circuit for supplying power to centrifugal pump |
| CN115800348A (en) * | 2022-12-22 | 2023-03-14 | 深圳时代能创软件科技有限公司 | Bidirectional battery inverter and energy storage system thereof |
| CN115864519A (en) * | 2023-01-17 | 2023-03-28 | 大秦新能源科技(泰州)有限公司 | Household power generation and energy storage system and use method |
| CN115882516A (en) * | 2023-03-08 | 2023-03-31 | 杭州欣美成套电器制造有限公司 | Photovoltaic grid-connected control device and method for efficient photovoltaic charging control |
| CN116365596A (en) * | 2023-03-14 | 2023-06-30 | 宁夏众合智源电力工程咨询有限公司 | Distributed power grid-based power scheduling method and system |
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- 2013-08-09 CN CN201320488751.3U patent/CN203377609U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104269880A (en) * | 2014-09-12 | 2015-01-07 | 国网上海市电力公司 | Unit photovoltaic and triple co-generation grid-connection electricity generation system |
| CN105680471A (en) * | 2014-12-04 | 2016-06-15 | Abb技术股份公司 | Apparatus for the conversion and optimized consumption management of power from renewable sources |
| CN107332270B (en) * | 2016-04-29 | 2023-06-09 | 伊顿飞瑞慕品股份有限公司 | Energy management device for photovoltaic grid-connected power generation system |
| CN107332270A (en) * | 2016-04-29 | 2017-11-07 | 伊顿飞瑞慕品股份有限公司 | Energy management apparatus for grid-connected photovoltaic system |
| CN106602604A (en) * | 2016-12-30 | 2017-04-26 | 国家电网公司 | Solar energy and municipal power cooperation power supply station UPS power control system |
| CN107294132A (en) * | 2017-06-29 | 2017-10-24 | 山东新华联智能光伏有限公司 | Photovoltaic parallel in system |
| CN107769204A (en) * | 2017-12-04 | 2018-03-06 | 郑州云海信息技术有限公司 | A kind of container data center and its method of supplying power to |
| CN108258678A (en) * | 2018-04-02 | 2018-07-06 | 杨广凌 | A kind of solar energy system and its method for supplying electricity to multi-load unit |
| CN109556054A (en) * | 2018-10-30 | 2019-04-02 | 长春理工大学光电信息学院 | A kind of solar street light of Internet of Things intelligent control |
| CN114144952A (en) * | 2019-07-25 | 2022-03-04 | 智能追踪识别有限公司 | Circuit for supplying power to centrifugal pump |
| CN115800348A (en) * | 2022-12-22 | 2023-03-14 | 深圳时代能创软件科技有限公司 | Bidirectional battery inverter and energy storage system thereof |
| CN115864519A (en) * | 2023-01-17 | 2023-03-28 | 大秦新能源科技(泰州)有限公司 | Household power generation and energy storage system and use method |
| CN115864519B (en) * | 2023-01-17 | 2024-01-26 | 大秦新能源科技(泰州)有限公司 | Household power generation and energy storage system and use method |
| CN115882516A (en) * | 2023-03-08 | 2023-03-31 | 杭州欣美成套电器制造有限公司 | Photovoltaic grid-connected control device and method for efficient photovoltaic charging control |
| CN116365596A (en) * | 2023-03-14 | 2023-06-30 | 宁夏众合智源电力工程咨询有限公司 | Distributed power grid-based power scheduling method and system |
| CN116365596B (en) * | 2023-03-14 | 2023-11-28 | 宁夏众合智源电力工程咨询有限公司 | Distributed power grid-based power scheduling method and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |