CN215185864U - Distributed light storage system charging and storing control system - Google Patents
Distributed light storage system charging and storing control system Download PDFInfo
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- CN215185864U CN215185864U CN202120807030.9U CN202120807030U CN215185864U CN 215185864 U CN215185864 U CN 215185864U CN 202120807030 U CN202120807030 U CN 202120807030U CN 215185864 U CN215185864 U CN 215185864U
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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
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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 discloses a distributing type light stores up system and fills and store control system relates to photovoltaic power generation technical field, fill and discharge unit, light power prediction unit, power consumption prediction unit and main control unit including photovoltaic power generation unit, energy storage, the input that the energy storage was filled and discharged the unit with photovoltaic power generation unit's output is connected, the input that the energy storage was filled and discharged the unit still is connected with the commercial power net, the output and the load that the unit was filled and discharged to the energy storage are connected, light power prediction unit, power consumption prediction unit and energy storage fill and discharge unit all with the main control unit is connected. The utility model discloses a light power prediction unit and power consumption prediction unit predict photovoltaic power generation unit's generated energy and the power consumption of load in a period of time in the future respectively, rationally arrange the energy storage according to the prediction result afterwards and fill the charge mode and the discharge time of charge-discharge unit, have improved energy utilization, have reduced the influence of photovoltaic power generation volatility to the electric wire netting.
Description
Technical Field
The utility model relates to a photovoltaic power generation technical field especially relates to a distributing type light stores up system and fills and store control system.
Background
Photovoltaic power generation is a technology of directly converting light energy into electric energy by using the photovoltaic effect of a semiconductor interface. The photovoltaic power generation is influenced by factors such as solar irradiance, environmental temperature and humidity, ventilation conditions and the like, and has the characteristics of randomness, volatility and intermittence. The stability and safety of a power grid are impacted by the grid connection of a large-scale photovoltaic system. In order to reduce the influence of photovoltaic power generation volatility on a power grid and improve the utilization rate of energy storage resources, photovoltaic power generation needs to be reasonably predicted and scheduled.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, overcome prior art's shortcoming, provide a distributing type light stores up system and fills and store control system.
In order to solve the technical problem, the technical scheme of the utility model as follows:
a distributed light storage system charging and discharging control system comprises a photovoltaic power generation unit, an energy storage charging and discharging unit, a light power prediction unit, a power consumption prediction unit and a main control unit, wherein the input end of the energy storage charging and discharging unit is connected with the output end of the photovoltaic power generation unit, the input end of the energy storage charging and discharging unit is also connected with a commercial power grid, the output end of the energy storage charging and discharging unit is connected with a load, the light power prediction unit, the power consumption prediction unit and the energy storage charging and discharging unit are all connected with the main control unit, the light power prediction unit is used for predicting the power generation amount of the photovoltaic power generation unit within a period of time t in the future and sending predicted data to the main control unit, the power consumption prediction unit is used for predicting the power consumption amount of the load within the period of time t in the future and sending the predicted data to the main control unit, and the main control unit is used for receiving the data sent by the light power prediction unit and the power consumption prediction unit, and controlling the charging mode and the discharging time of the energy storage charging and discharging unit according to the received data.
According to the technical scheme, the generated energy of the photovoltaic power generation unit and the power consumption of the load in a period of time are respectively predicted through the light power prediction unit and the power consumption prediction unit, then the main control unit controls the charging mode and the discharging time of the energy storage charging and discharging unit according to the prediction data, when the generated energy of the photovoltaic power generation unit is low, the energy storage charging and discharging unit can be charged through commercial power in the valley electricity period, and the load is supplied with power through the energy storage charging and discharging unit in the peak electricity period, so that the energy consumption is effectively reduced, the influence of the photovoltaic power generation volatility on a power grid is effectively reduced, and the utilization rate of energy storage resources is improved.
As distributed light stores up the system and fills an optimal scheme that stores control system, wherein: when the generated energy of the photovoltaic power generation unit is smaller than the power consumption of the load within a period of time t in the future, the main control unit controls the energy storage charging and discharging unit to charge by using commercial power in a valley period and controls the energy storage charging and discharging unit to supply power to the load in a peak period; and when the generated energy of the photovoltaic power generation unit is larger than the power consumption of the load within a period of time t in the future, the main control unit controls the energy storage charging and discharging unit to supply power to the load.
As distributed light stores up the system and fills an optimal scheme that stores control system, wherein: the light power prediction unit comprises a data acquisition module and a power calculation module, wherein the data acquisition module is connected to the Internet and used for acquiring the solar irradiation intensity in a period of time t in the future and transmitting the acquired data to the power calculation module, and the power calculation module is used for receiving the data transmitted by the data acquisition module and calculating the generated energy of the photovoltaic power generation unit in the period of time t in the future according to a solar irradiation intensity and power generation power conversion efficiency model.
According to the technical scheme, the solar irradiation intensity in a period of time in the future is obtained through the data obtaining module, and then the generated energy is calculated through the conversion efficiency module between the solar irradiation intensity and the generated power of the photovoltaic module, so that the prediction result is more accurate, and the volatility of the photovoltaic power generation system is further reduced.
As distributed light stores up the system and fills an optimal scheme that stores control system, wherein: the power consumption prediction unit comprises a historical power consumption data statistics module which is used for recording historical power consumption data to form a database and predicting the power consumption of the load in a period of time t in the future according to the database.
As distributed light stores up the system and fills an optimal scheme that stores control system, wherein: t is more than or equal to 2h and t is less than or equal to 48 h.
The utility model has the advantages that:
(1) the utility model discloses a light power prediction unit and power consumption prediction unit predict photovoltaic power generation unit's generated energy and the power consumption of load in a period of time in the future respectively, rationally arrange the energy storage according to the prediction result afterwards and fill the charge mode and the discharge time of charge-discharge unit, have improved energy utilization, have reduced the influence of photovoltaic power generation volatility to the electric wire netting.
(2) The utility model discloses well energy storage fills the input of charge-discharge unit and is connected with photovoltaic power generation unit's output and municipal power network, makes the energy storage fill-discharge unit can select the charging mode as required, and can fill-discharge unit to the energy storage through the commercial power at the millet electricity period and charge, adopts the energy storage to fill-discharge unit to load power supply, greatly reduced the power consumption cost at peak electricity period.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of a framework of a distributed light storage system charging and storing control system provided by the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
The embodiment provides a distributed light storage system charging and storing control system, which comprises a photovoltaic power generation unit, an energy storage charging and discharging unit, a light power prediction unit, a power consumption prediction unit and a main control unit.
The output end of the photovoltaic power generation unit is connected with the input end of the energy storage charging and discharging unit, the photovoltaic power generation unit converts solar energy into electric energy and then transmits the electric energy to the energy storage charging and discharging unit, and the electric energy is stored by the energy storage charging and discharging unit. The output end of the energy storage charging and discharging unit is connected with the input end of the load, and the energy storage charging and discharging unit can transmit the stored electric energy to the load to supply power for the load. Meanwhile, the input end of the energy storage charging and discharging unit is also connected with a commercial power grid, namely the energy storage charging and discharging unit can also charge the energy storage charging and discharging unit by using the commercial power grid.
The energy storage charging and discharging unit, the light power prediction unit and the power consumption prediction unit are all connected with the main control unit. The light power prediction unit is used for predicting the generated energy of the photovoltaic power generation unit within a period of time t in the future and transmitting the predicted data to the main control unit. The power consumption prediction unit is used for predicting the power consumption of the load in a period of time t in the future and transmitting the predicted data to the main control unit. And after receiving the data transmitted by the light power prediction unit and the power consumption prediction unit, the main control unit compares and analyzes the data and then controls the charging mode and the discharging time of the energy storage charging and discharging unit according to the data. The specific control mode is as follows:
when the generated energy of the photovoltaic power generation unit is smaller than the power consumption of the load within a period of time t in the future, if the energy storage charging and discharging unit only stores the electric energy generated by the photovoltaic power generation unit and the stored electric energy cannot meet the power consumption requirement of the load, the main control unit controls the energy storage charging and discharging unit to charge through the commercial power in the valley power period, so that the electric energy stored by the energy storage charging and discharging unit comes from the photovoltaic power generation unit and the commercial power respectively. At the moment, two conditions exist, one is that the electric energy stored in the energy storage charging and discharging unit can meet the power consumption of the load, the energy storage charging and discharging unit is only used for supplying power to the load, the other is that the electric energy stored in the energy storage charging and discharging unit can not meet the power consumption of the load, the commercial power can be used for supplying power to the load in the valley power period, and the main control unit controls the energy storage charging and discharging unit to supply power to the load in the peak power period.
When the generated energy of the photovoltaic power generation unit is larger than the power consumption of the load within a period of time t in the future, the energy storage charging and discharging unit only stores the electric energy generated by the photovoltaic power generation unit to meet the power consumption requirement of the load, and then the main control unit controls the energy storage charging and discharging unit to supply power to the load.
The optical power prediction unit comprises a data acquisition module and a power calculation module. The data acquisition module is accessed to the Internet and used for acquiring the solar irradiation intensity in a future period of time t and transmitting the acquired data to the power calculation module. The power calculation module is used for receiving the data transmitted by the data acquisition module, calculating the generated energy of the photovoltaic power generation unit within a period of time t in the future according to the received data and the solar irradiation intensity and power generation power conversion efficiency model, and then transmitting the calculated data to the main control unit.
The light power prediction unit can perform ultra-short-term prediction, namely prediction of the power generation amount of the photovoltaic power generation unit within 2-4 h in the future, and is mainly used for photovoltaic power generation control, power quality evaluation, research and development design of a photovoltaic power station component part and the like. And short-term prediction can be carried out, namely the prediction of the generated energy of the photovoltaic power generation unit within 4-48 h in the future, and the method is mainly used for power balance and economic dispatching of a power system, day-ahead power generation plan formulation, power market trading, transient stability evaluation and the like. In addition, the method can also be used for medium and long term prediction, namely prediction of the photovoltaic power generation units in a week in the future, and is mainly used for scheduling maintenance of the photovoltaic power generation units and the like.
The power consumption prediction unit comprises a historical power consumption data statistic module. The historical electricity consumption data statistics module is used for recording historical electricity consumption data, forming a database, roughly planning and predicting electricity consumption within a period of time t in the future according to the database, and then transmitting a prediction result to the main control unit. It should be noted that, in the following description,
in this embodiment, the data acquisition module, the power calculation module and the historical power consumption data statistics module in the main control unit, the photovoltaic power generation unit, the energy storage charging and discharging unit and the light power prediction unit are all existing functional modules, and software in the functional modules is not improved in the present application.
In addition to the above embodiments, the present invention may have other embodiments; all the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.
Claims (5)
1. The utility model provides a distributed light stores up system and fills and store control system which characterized in that: comprises a photovoltaic power generation unit, an energy storage charging and discharging unit, a light power prediction unit, a power consumption prediction unit and a main control unit,
the input end of the energy storage charging and discharging unit is connected with the output end of the photovoltaic power generation unit, the input end of the energy storage charging and discharging unit is also connected with a commercial power grid, the output end of the energy storage charging and discharging unit is connected with a load,
the photovoltaic power generation system comprises a light power prediction unit, a power consumption prediction unit and an energy storage charging and discharging unit, wherein the light power prediction unit, the power consumption prediction unit and the energy storage charging and discharging unit are all connected with a main control unit, the light power prediction unit is used for predicting the power generation amount of the photovoltaic power generation unit within a period of time t in the future and sending prediction data to the main control unit, the power consumption prediction unit is used for predicting the power consumption of a load within the period of time t in the future and sending the prediction data to the main control unit, and the main control unit is used for receiving the data sent by the light power prediction unit and the power consumption prediction unit and controlling the charging mode and the discharging time of the energy storage charging and discharging unit according to the received data.
2. The distributed optical storage system charge and storage control system of claim 1, wherein: when the generated energy of the photovoltaic power generation unit is smaller than the power consumption of the load within a period of time t in the future, the main control unit controls the energy storage charging and discharging unit to charge by using commercial power in a valley period and controls the energy storage charging and discharging unit to supply power to the load in a peak period;
and when the generated energy of the photovoltaic power generation unit is larger than the power consumption of the load within a period of time t in the future, the main control unit controls the energy storage charging and discharging unit to supply power to the load.
3. The distributed optical storage system charge and storage control system of claim 1, wherein: the light power prediction unit comprises a data acquisition module and a power calculation module, wherein the data acquisition module is connected to the Internet and used for acquiring the solar irradiation intensity in a period of time t in the future and transmitting the acquired data to the power calculation module, and the power calculation module is used for receiving the data transmitted by the data acquisition module and calculating the generated energy of the photovoltaic power generation unit in the period of time t in the future according to a solar irradiation intensity and power generation power conversion efficiency model.
4. The distributed optical storage system charge and storage control system of claim 1, wherein: the power consumption prediction unit comprises a historical power consumption data statistics module which is used for recording historical power consumption data to form a database and predicting the power consumption of the load in a period of time t in the future according to the database.
5. The distributed optical storage system charge and storage control system of claim 1, wherein: t is more than or equal to 2h and t is less than or equal to 48 h.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116154974A (en) * | 2023-04-23 | 2023-05-23 | 杭州欣美成套电器制造有限公司 | Micro-grid monitoring system for electric micro-grid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116154974A (en) * | 2023-04-23 | 2023-05-23 | 杭州欣美成套电器制造有限公司 | Micro-grid monitoring system for electric micro-grid |
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