CN116470574A - Energy large-base stable power transmission method, system, device and medium - Google Patents
Energy large-base stable power transmission method, system, device and medium Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 65
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- 238000004590 computer program Methods 0.000 claims description 14
- 230000001932 seasonal effect Effects 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 59
- 238000004146 energy storage Methods 0.000 description 13
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/004—Generation forecast, e.g. methods or systems for forecasting future energy generation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
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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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Abstract
The invention discloses an energy large-base stable power transmission method, a system, a device and a medium, which relate to the field of power transmission, and are characterized in that in order to stably transmit wind power generation and photovoltaic power generation into a power grid, wind power output prediction data and photovoltaic power output prediction data of a current period are required to be determined firstly, a first average value and a second average value which correspond to the wind power output prediction data and the photovoltaic power output prediction data of the current period are determined based on the wind power output prediction data and the photovoltaic power output prediction data of the current period, a wind power direct output value and a photovoltaic direct output value are determined through the first average value, the second average value, a predetermined wind power and photovoltaic power output function and a preset probability density value, finally wind power output actual data and photovoltaic power output actual data which need to be transmitted to the power grid in the current period are determined according to the wind power direct output value and the photovoltaic direct output value, the wind power output actual data corresponds to stable wind power generation, and the photovoltaic power output actual data corresponds to stable photovoltaic power generation, and the stability of transmission is ensured.
Description
Technical Field
The invention relates to the field of power transmission, in particular to a method, a system, a device and a medium for stably transmitting power of an energy large base.
Background
In recent years, the installed capacity of renewable energy sources in China is rapidly increased, the total installed capacity of wind power and solar power generation reaches 3.4 hundred million kW respectively by 2022 month, 13.93 percent of the total installed capacity is occupied respectively, and the proportion of the installed capacity of coal and electricity is reduced to 53.48 percent. Therefore, the connection of the wind power generation of the wind power generator and the photovoltaic power generation of the solar power generator into the power grid is an important means for solving the problem of a clean energy system. However, since wind power generation and photovoltaic power generation have the characteristics of randomness, intermittence and volatility, how to stably connect the wind power generation and the photovoltaic power generation to a power grid is the most concerned at present. However, in the prior art, no method for stably conveying wind power generation and photovoltaic power generation into a power grid exists.
Disclosure of Invention
The invention aims to provide an energy large-base stable power transmission method, system, device and medium, in order to stably transmit wind power generation and photovoltaic power generation into a power grid, wind power output prediction data and photovoltaic power output prediction data in a current period are required to be determined firstly, a first average value and a second average value which correspond to the wind power output prediction data and the photovoltaic power output prediction data in the current period are determined based on the wind power output prediction data and the photovoltaic power output prediction data in the current period, a wind power direct output value and a photovoltaic direct output value are determined through the first average value, the second average value, a predetermined wind power and photovoltaic power output function and a preset probability density value, finally wind power output actual data and photovoltaic power output actual data which need to be transmitted to the power grid in the current period are determined according to the wind power direct output value and the photovoltaic direct output value, the wind power output actual data corresponds to stable wind power generation, the photovoltaic power generation corresponding to the photovoltaic power output actual data is stable, and the stability of transmission is ensured.
In order to solve the technical problems, the invention provides an energy large-base stable power transmission method, which comprises the following steps:
determining wind power output prediction data and photoelectric output prediction data of the current period;
determining a first average value of the wind power output prediction data and a second average value of the photovoltaic power output prediction data;
determining a wind power direct output value and a photoelectric direct output value in the current period based on a predetermined wind power and photoelectric output function, a preset probability density value, the first average value and the second average value;
and determining wind power output actual data and photoelectric output actual data which are required to be transmitted to a power grid in the current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value.
Preferably, the determining the wind power output prediction data and the photovoltaic power output prediction data of the current period includes:
determining wind power output actual data and photoelectric output actual data of a target historical period;
determining wind power output prediction data of the current period based on the wind power output actual data of the target historical period, a first mapping relation between a preset model and the wind power output prediction data of the current period, and a second mapping relation between the preset model and the wind power output actual data of the target historical period;
determining the photoelectric output prediction data of the current period based on the photoelectric output actual data of the target historical period, a third mapping relation between a preset model and the photoelectric output prediction data of the current period, and a fourth mapping relation between the preset model and the photoelectric output actual data of the target historical period.
Preferably, before the determining the wind power direct output value and the photovoltaic direct output value of the current period based on the predetermined wind power and photovoltaic output function, the preset probability density value, the first average value and the second average value, the method further comprises:
acquiring condition information of a current period, wherein the condition information comprises: climate conditions and/or geographical location and/or seasonal conditions;
and determining wind power and photoelectric output functions corresponding to the condition information.
Preferably, the determining the wind power direct output value and the photovoltaic direct output value of the current period based on the predetermined wind power and photovoltaic output function, the preset probability density value, the first average value and the second average value includes:
determining the maximum value of a fluctuation interval based on the predetermined wind power and photoelectric output function, a preset probability density value and a fluctuation interval relational expression;
subtracting the maximum value of the fluctuation range from the first average value to obtain a wind power direct output value;
and obtaining a photoelectric direct output value by adding the maximum value of the fluctuation range to the second average value.
Preferably, determining the wind power output actual data and the photoelectric output actual data required to be transmitted to the power grid in the current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value includes:
subtracting the residual wind power output data of the wind power direct output value from the wind power output prediction data of the current period to serve as the wind power output actual data which needs to be transmitted to a power grid in the current period;
and subtracting the residual photoelectric output data of the photoelectric direct output value from the photoelectric output predicted data of the current period to serve as the photoelectric output actual data which needs to be transmitted to a power grid in the current period.
Preferably, after determining the wind power output actual data and the photovoltaic power output actual data, which need to be transmitted to the power grid in the current period, based on the wind power output prediction data, the photovoltaic power output prediction data, the wind power direct output value and the photovoltaic direct output value, the method further comprises:
triggering the transmission operation of the wind power output actual data and the photoelectric output actual data in the current period, and controlling a preset prompt module to send out corresponding prompts after successful transmission.
Preferably, the prompt includes: audible prompts and/or visual prompts.
In order to solve the technical problem, the invention also provides an energy large-base stable power transmission system, which comprises:
the first determining unit is used for determining wind power output prediction data and photoelectric output prediction data in the current period;
the second determining unit is used for determining a first average value of the wind power output prediction data and a second average value of the photoelectric output prediction data;
the third determining unit is used for determining a wind power direct output value and a photoelectric direct output value of the current period based on a predetermined wind power and photoelectric output function, a preset probability density value, the first average value and the second average value;
and the fourth determining unit is used for determining wind power output actual data and photoelectric output actual data which are required to be transmitted to a power grid in the current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value.
In order to solve the technical problem, the invention also provides an energy large-base stable power transmission device, which comprises:
a memory for storing a computer program;
and a processor for implementing the steps of the energy base stable power transmission method as described above when executing the computer program.
To solve the above technical problem, the present invention further provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the energy-based stable power transmission method as described above.
The invention aims to provide an energy large-base stable power transmission method, system, device and medium, in order to stably transmit wind power generation and photovoltaic power generation into a power grid, wind power output prediction data and photovoltaic power output prediction data in a current period are required to be determined firstly, a first average value and a second average value which correspond to the wind power output prediction data and the photovoltaic power output prediction data in the current period are determined based on the wind power output prediction data and the photovoltaic power output prediction data in the current period, a wind power direct output value and a photovoltaic direct output value are determined through the first average value, the second average value, a predetermined wind power and photovoltaic power output function and a preset probability density value, finally wind power output actual data and photovoltaic power output actual data which need to be transmitted to the power grid in the current period are determined according to the wind power direct output value and the photovoltaic direct output value, the wind power output actual data corresponds to stable wind power generation, the photovoltaic power generation corresponding to the photovoltaic power output actual data is stable, and the stability of transmission is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a process flow diagram of an energy large-base stable power transmission method provided by the invention;
FIG. 2 is a schematic diagram of a new energy large base system structure provided by the invention;
FIG. 3 is a schematic diagram of the power transmission capacity of each system of the new energy large base provided by the invention;
FIG. 4 is a schematic diagram of the wind and light output provided by the present invention;
FIG. 5 is a graph of fluctuation amount versus probability density provided by the present invention;
FIG. 6 is a schematic diagram of the calculation result of direct output values of photovoltaic power generation and wind power generation provided by the invention;
fig. 7 is a schematic structural diagram of an energy-based stable power transmission device provided by the invention.
Detailed Description
The invention provides a stable power transmission method, a system, a device and a medium of an energy large-base, in order to stably transmit wind power generation and photovoltaic power generation into a power grid, wind power output prediction data and photovoltaic power output prediction data of a current period are required to be determined firstly, a first average value and a second average value which correspond to the wind power output prediction data and the photovoltaic power output prediction data of the current period are determined based on the wind power output prediction data and the photovoltaic power output prediction data of the current period, a wind power direct output value and a photovoltaic direct output value are determined through the first average value, the second average value, a predetermined wind power and photovoltaic power output function and a preset probability density value, and finally wind power output actual data and photovoltaic power output actual data which need to be transmitted to the power grid in the current period are determined according to the wind power direct output value and the photovoltaic direct output value, the wind power output actual data corresponds to stable wind power generation, and the photovoltaic power output actual data corresponds to stable photovoltaic power generation, and the stability of transmission is ensured.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a process flow chart of a method for stabilizing power transmission of an energy base. The method comprises the following steps:
s10, determining wind power output prediction data and photoelectric output prediction data of the current period;
in the invention, in order to stably convey wind power generation and photovoltaic power generation into a power grid in the current period, the wind power output prediction data and the photovoltaic power output prediction data in the current period are required to be clear, so that the wind power output prediction data and the photovoltaic power output prediction data in the current period are determined, and the stability of the scheme is improved.
It should be noted that, the current period may refer to the current day or a preset period of time, and the present invention is not limited to this, depending on the actual application.
In practical applications, the method for determining the wind power output prediction data and the photovoltaic power output prediction data in the current period may be determining the wind power output prediction data and the photovoltaic power output prediction data in the current period according to the wind power output actual data and the photovoltaic power output actual data in the target historical period, the mapping relation between the preset model and the wind power output prediction data and the photovoltaic power output prediction data in the current period, the mapping relation between the preset model and the wind power output actual data and the photovoltaic power output prediction data in the target historical period, or other determining methods.
S11, determining a first average value of wind power output prediction data and a second average value of photoelectric output prediction data;
in the invention, because the wind power output actual data and the photoelectric output actual data which are required to be transmitted to the power grid in the current period are respectively related to the wind power direct output value and the photoelectric direct output value in the current period, and the wind power direct output value and the photoelectric direct output value in the current period are related to the first average value of wind power output prediction data and the second average value of photoelectric output prediction data, the first average value and the second average value are required to be determined, and the reliability of the scheme is improved.
S12, determining a wind power direct output value and a photoelectric direct output value in the current period based on a predetermined wind power and photoelectric output function, a preset probability density value, a first average value and a second average value;
in the invention, because the wind power output actual data and the photoelectric output actual data which are required to be transmitted to the power grid in the current period are respectively related to the wind power direct output value and the photoelectric direct output value in the current period, the wind power direct output value and the photoelectric direct output value in the current period are required to be determined through a predetermined wind power and photoelectric output function, a preset probability density value, a first average value and a second average value, and the accuracy of the scheme is improved.
And S13, determining wind power output actual data and photoelectric output actual data which are required to be transmitted to a power grid in the current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value.
According to the invention, after the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value are determined, the wind power output actual data and the photoelectric output actual data which are required to be transmitted to the power grid in the current period can be determined based on the data, so that the accuracy and the efficiency of the scheme are improved.
It should be noted that, because the whole power transmission method is applied to the new energy large-base energy storage system including the wind power generation system, the photovoltaic power generation system, the thermal power generation system and the energy storage system, the structure diagram of the whole system is shown in fig. 2. The working process of the system is as follows: the wind power generation system, the photovoltaic power generation system, the thermal power generation system and the energy storage system simultaneously supply power to the power grid, when wind power and sunlight are sufficient, the thermal power generation is in a low-load working state, and the hybrid energy storage system stores other parts of the wind power generation and the photovoltaic power generation exceeding a direct output value on one hand and supplements the power supply deficiency caused by wind power and photovoltaic fluctuation on the other hand; when the wind power is too small or cloudy and other bad weather phenomena occur, the wind power generation system and the photovoltaic power generation system generate power to be fluctuant, the hybrid energy storage system firstly rapidly increases and maintains stable power transmission when the reduction of the power transmission capacity occurs, the thermal power generation system subsequently increases the power generation capacity to stabilize the instability of most of the power generation capacity of the energy base, and the hybrid energy storage system converts the function of adjusting the stability of power transmission. At night, the working process of the system is as follows: the wind power generation system, the thermal power generation system and the hybrid energy storage system supply power to the power grid at the same time, and the thermal power generation is used as an auxiliary measure for adjusting the generated energy, so that the shortage of the power transmission quantity is mainly made up. The hybrid energy storage system takes on the functions of complementing the balance of the total power transmission and performing short-time fluctuation suppression. The power transmission capacity of each system of the new energy large base is shown in figure 3. The whole system works by the unified planning and implementation of the control strategy, under the premise of meeting the power transmission quantity adjustment of each time period, the new energy power stored by the wind power generation, photovoltaic power generation and hybrid system is preferentially transmitted to the power grid, so that the whole system can stably transmit the electric energy corresponding to the data to the power grid after determining the wind power output actual data and the photoelectric output actual data which are required to be transmitted to the power grid in the current period, and can supply power to the power grid through the thermal power generation system and the energy storage system when the power supply is insufficient, thereby meeting the power quantity requirement of the power grid, and reasonably distributing the charging, discharging and standby electric energy proportion based on the proportion of the new energy to the energy storage of the large-scale base.
In order to stably convey wind power generation and photovoltaic power generation into a power grid, wind power output prediction data and photovoltaic power output prediction data of a current period need to be determined first, a first average value and a second average value which correspond to the wind power output prediction data and the photovoltaic power output prediction data of the current period are determined based on the wind power output prediction data and the photovoltaic power output prediction data of the current period, a wind power direct output value and a photovoltaic direct output value are determined through the first average value, the second average value, a predetermined wind power and photovoltaic power output function and a preset probability density value, finally wind power output actual data and photovoltaic power output actual data which need to be transmitted to the power grid in the current period are determined according to the wind power direct output value and the photovoltaic direct output value, stable wind power generation is corresponding to the wind power output actual data, stable photovoltaic power generation is corresponding to the photovoltaic power output actual data, and conveying stability is guaranteed.
Based on the above embodiments:
as a preferred embodiment, determining the wind power output prediction data and the photovoltaic power output prediction data of the current period includes:
determining wind power output actual data and photoelectric output actual data of a target historical period;
in the invention, because the wind power output prediction data and the photoelectric output prediction data in the current period are obtained through prediction, the premise of determining the wind power output prediction data and the photoelectric output prediction data in the current period is to determine the wind power output actual data and the photoelectric output actual data in the target historical period first, thereby improving the accuracy of the scheme.
It should be noted that, if the current period is one day, the target history period may be one day or several days before the current period, and the present invention is not limited herein.
Determining wind power output prediction data of the current period based on the wind power output actual data of the target historical period, a first mapping relation between a preset model and the wind power output prediction data of the current period, and a second mapping relation between the preset model and the wind power output actual data of the target historical period;
in the invention, when the wind power output actual data of the target historical period is determined, the wind power output prediction data of the current period is required to be determined according to the first mapping relation between the preset model and the wind power output prediction data of the current period and the second mapping relation between the preset model and the wind power output actual data of the target historical period, and the wind power output prediction data of the current period can be determined more accurately through the mapping relation, so that the accuracy of the scheme is improved.
And determining the photoelectric output predicted data of the current period based on the photoelectric output actual data of the target historical period, a third mapping relation between the preset model and the photoelectric output predicted data of the current period, and a fourth mapping relation between the preset model and the photoelectric output actual data of the target historical period.
In the invention, when the actual data of the photoelectric output of the target historical period is determined, in order to determine the predicted data of the photoelectric output of the current period, the predicted data of the wind power of the current period can be determined more accurately through the mapping relationship according to the third mapping relationship between the preset model and the predicted data of the photoelectric output of the current period and the fourth mapping relationship between the preset model and the actual data of the photoelectric output of the target historical period, so that the reliability of the scheme is improved.
In practical application, an output prediction model is established according to output data of a target historical period of photovoltaic and wind power in an energy large base, electric output data of a current period is obtained through the prediction model, average output values of the photovoltaic and wind power in the same day are calculated based on the data, a preset model diagram is shown in fig. 4, a dotted line represents photovoltaic power generation, a solid line represents wind power generation, and a straight line represents an average value.
As a preferred embodiment, before determining the wind power direct output value and the photovoltaic direct output value of the current period based on the predetermined wind power and photovoltaic output function, the preset probability density value, the first average value and the second average value, the method further comprises:
acquiring condition information of a current period, wherein the condition information comprises: climate conditions and/or geographical location and/or seasonal conditions;
and determining wind power and photoelectric output functions corresponding to the condition information.
In the invention, wind power and photoelectric output functions corresponding to the condition information are determined according to the acquired condition information of the current period, wherein the condition information comprises several conditions, such as: climate conditions and geographical locations, climate conditions and seasonal conditions, climate conditions, geographical locations, seasonal conditions, and the like. The stability and the reliability of the scheme are ensured.
In practical application, a function suitable for local wind power and photovoltaic output characteristics is selected from probability density functions such as a front-end distribution, a t-location scale distribution (t distribution containing a scale parameter and a position parameter) aiming at conditions such as climate conditions, geographic positions, seasonal changes and the like of a new energy large base, and the output characteristics of wind power and photovoltaic are described through the function.
It should be noted that, the condition information includes not only the climate condition, the geographical location and the season condition, but also a plurality of condition information, as long as a function suitable for the local wind power and the photovoltaic output characteristics can be selected according to the condition information, and the wind power and the photovoltaic output characteristics can be described by the function, but the invention is not limited herein.
As a preferred embodiment, determining the wind power direct output value and the photovoltaic direct output value of the current period based on a predetermined wind power and photovoltaic output function, a preset probability density value, a first average value and a second average value includes:
determining the maximum value of a fluctuation interval based on a predetermined wind power and photoelectric output function, a preset probability density value and a fluctuation interval relation;
subtracting the maximum value of the fluctuation interval from the first average value to obtain a wind power direct output value;
and obtaining a photoelectric direct output value by adding the maximum value of the fluctuation range to the second average value.
According to the invention, a corresponding fluctuation interval can be determined according to a predetermined wind power and photoelectric output function, a preset probability density value and a fluctuation interval relational expression, the maximum value of the fluctuation interval is obtained, the maximum value of the fluctuation interval is taken as a reference value, and the maximum value of the fluctuation interval is subtracted by a first average value to obtain a wind power direct output value; in order to obtain the photoelectric direct output value, the maximum value of the fluctuation range is added to the second average value, so that the reliability of the scheme is improved.
The fluctuation amount interval may be also referred to as a power fluctuation amount interval, and the relation diagram of the fluctuation amount and the probability density is shown in fig. 5, and the range of the fluctuation amount interval is generally (-a, a), and the specific value of a depends on the actual application, and the present invention is not limited thereto.
The probability density calculation and analysis are the precondition of implementing a stable power transmission method, and the invention deduces the power fluctuation interval through the preset probability density, and thereby determines the wind power direct output value and the photoelectric direct output value.
In practical application, direct output data of photovoltaic power generation and wind power generation, energy storage electric quantity and energy storage distribution data are matched in a coordinated manner. The calculated direct output values of the photovoltaic power generation and the wind power generation are shown in fig. 6.
As a preferred embodiment, determining wind power output actual data and photoelectric output actual data to be transmitted to the power grid in the current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value includes:
subtracting the residual wind power output data of the wind power direct output value from the wind power output prediction data of the current period to serve as the wind power output actual data which needs to be transmitted to the power grid in the current period;
and subtracting the residual photoelectric output data of the photoelectric direct output value from the photoelectric output predicted data of the current period to serve as the photoelectric output actual data which needs to be transmitted to the power grid in the current period.
In the invention, the wind power output prediction data of the current period is subtracted by the wind power direct output value, and the obtained residual wind power output data is the wind power output actual data which needs to be transmitted to the power grid in the current period; subtracting the photoelectric direct output value from the photoelectric output prediction data of the current period to obtain residual photoelectric output data which is the actual data of the photoelectric output required to be transmitted to the power grid in the current period, and more accurately obtaining the actual data of the wind power output and the actual data of the photoelectric output required to be transmitted to the power grid in the current period.
It should be noted that the actual data of the wind power output to be transmitted to the power grid is directly received by the energy storage system.
As a preferred embodiment, after determining the actual wind power output data and the actual photovoltaic power output data to be transmitted to the power grid in the current period based on the wind power output prediction data, the photovoltaic power output prediction data, the wind power direct output value and the photovoltaic direct output value, the method further comprises:
triggering the transmission operation of the wind power output actual data and the photoelectric output actual data in the current period, and controlling a preset prompt module to send out corresponding prompts after successful transmission.
In the invention, after the wind power output data and the photoelectric output data which are required to be transmitted to the power grid are determined, the transmission operation of the wind power output data and the photoelectric output data is carried out, and the preset prompt module is controlled to send out corresponding prompts after the transmission is successful, so that a user can timely know whether the transmission process is successful or not, and the safety of a scheme is improved.
In practical applications, the prompt may be an audio prompt, or a display prompt or an audio prompt and a display prompt.
As a preferred embodiment, the prompt includes: audible prompts and/or visual prompts.
In the invention, the prompt can be an acoustic prompt, or can be a display prompt or an acoustic prompt and a display prompt, so that a user can be prompted more timely, and the transmission of the wind power output actual data and the photoelectric output actual data in the current period is successful.
In order to solve the technical problem, the invention also provides an energy large-base stable power transmission system, which comprises:
the first determining unit is used for determining wind power output prediction data and photoelectric output prediction data in the current period;
the second determining unit is used for determining a first average value of the wind power output prediction data and a second average value of the photoelectric output prediction data;
the third determining unit is used for determining a wind power direct output value and a photoelectric direct output value in the current period based on a predetermined wind power and photoelectric output function, a preset probability density value, a first average value and a second average value;
and the fourth determining unit is used for determining wind power output actual data and photoelectric output actual data which are required to be transmitted to the power grid in the current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value.
The energy-based stable power transmission system provided in this embodiment corresponds to the above method, and therefore has the same beneficial effects as the above method, so that the embodiments of the energy-based stable power transmission system part are described in the embodiments of the method part, and are not repeated here.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an energy-based stable power transmission device according to the present invention. The device comprises:
a memory 20 for storing a computer program;
the processor 21 is configured to implement the steps of the energy-base-stabilized power transmission method described above when executing the computer program.
The energy source large-base stable power transmission device provided by the embodiment can comprise, but is not limited to, a smart phone, a tablet personal computer, a notebook personal computer, a desktop personal computer or the like.
Processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 21 may be implemented in hardware in at least one of a digital signal processor (Digital Signal Processor, DSP), a Field programmable gate array (Field-Programmable Gate Array, FPGA), a programmable logic array (Programmable Logic Array, PLA). The processor 21 may also comprise a main processor, which is a processor for processing data in an awake state, also called central processor (Central Processing Unit, CPU), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with an image processor (Graphics Processing Unit, GPU) for taking care of rendering and rendering of the content that the display screen is required to display. In some embodiments, the processor 21 may also include an artificial intelligence (Artificial Intelligence, AI) processor for processing computing operations related to machine learning.
Memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used to store a computer program 201, where the computer program, when loaded and executed by the processor 21, is capable of implementing the relevant steps of the energy-based stable transmission method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may further include an operating system 202, data 203, and the like, where the storage manner may be transient storage or permanent storage. The operating system 202 may include Windows, unix, linux, among others. The data 203 may include, but is not limited to, energy base stabilized transmission methods, and the like.
In some embodiments, the energy source large-base stable power transmission device can further comprise a display screen 22, an input-output interface 23, a communication interface 24, a power supply 25 and a communication bus 26.
It will be appreciated by those skilled in the art that the structure shown in fig. 7 is not limiting of an energy-based stable power transmission device and may include more or fewer components than shown.
The present embodiment aims to provide an energy-based stable power transmission device, in which a memory 20 is used to store a computer program, and a processor 21 is used to implement the steps of the energy-based stable power transmission method when executing the computer program, so that the power transmission process is more efficient and accurate.
The invention also provides a corresponding embodiment of a computer readable storage medium, wherein the computer readable storage medium is stored with a computer program, and the computer program realizes the steps of the energy source large-base stable power transmission method when being executed by a processor.
It will be appreciated that the methods of the above embodiments, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored on a computer readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in part or in whole or in part in the form of a software product stored in a storage medium for performing all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The computer readable storage medium provided in this embodiment corresponds to the above method, and therefore has the same beneficial effects as the above method, so that the embodiments of the computer readable storage medium portion are referred to the description of the embodiments of the method portion, and are not repeated here.
It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An energy-based stable power transmission method is characterized by comprising the following steps:
determining wind power output prediction data and photoelectric output prediction data of the current period;
determining a first average value of the wind power output prediction data and a second average value of the photovoltaic power output prediction data;
determining a wind power direct output value and a photoelectric direct output value in the current period based on a predetermined wind power and photoelectric output function, a preset probability density value, the first average value and the second average value;
and determining wind power output actual data and photoelectric output actual data which are required to be transmitted to a power grid in the current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value.
2. The method for power transmission stabilization at an energy source base according to claim 1, wherein determining the wind power output prediction data and the photovoltaic power output prediction data of the current period comprises:
determining wind power output actual data and photoelectric output actual data of a target historical period;
determining wind power output prediction data of the current period based on the wind power output actual data of the target historical period, a first mapping relation between a preset model and the wind power output prediction data of the current period, and a second mapping relation between the preset model and the wind power output actual data of the target historical period;
determining the photoelectric output prediction data of the current period based on the photoelectric output actual data of the target historical period, a third mapping relation between a preset model and the photoelectric output prediction data of the current period, and a fourth mapping relation between the preset model and the photoelectric output actual data of the target historical period.
3. The method of energy large base stable power transmission according to claim 1, further comprising, before said determining a current period wind power direct output value and a photovoltaic direct output value based on a predetermined wind power and photovoltaic output function, a preset probability density value, the first average value and the second average value:
acquiring condition information of a current period, wherein the condition information comprises: climate conditions and/or geographical location and/or seasonal conditions;
and determining wind power and photoelectric output functions corresponding to the condition information.
4. The method of energy large base stable power transmission according to claim 1, wherein determining the wind power direct output value and the photovoltaic direct output value of the current period based on the predetermined wind power and photovoltaic output function, the preset probability density value, the first average value and the second average value includes:
determining the maximum value of a fluctuation interval based on the predetermined wind power and photoelectric output function, a preset probability density value and a fluctuation interval relational expression;
subtracting the maximum value of the fluctuation range from the first average value to obtain a wind power direct output value;
and obtaining a photoelectric direct output value by adding the maximum value of the fluctuation range to the second average value.
5. The method of energy-based stable power transmission according to claim 1, wherein determining actual data of wind power output and actual data of photovoltaic power output to be transmitted to a power grid in a current period based on the predicted data of wind power output, the predicted data of photovoltaic power output, the direct wind power output value and the direct photovoltaic power output value comprises:
subtracting the residual wind power output data of the wind power direct output value from the wind power output prediction data of the current period to serve as the wind power output actual data which needs to be transmitted to a power grid in the current period;
and subtracting the residual photoelectric output data of the photoelectric direct output value from the photoelectric output predicted data of the current period to serve as the photoelectric output actual data which needs to be transmitted to a power grid in the current period.
6. The energy large base stable power transmission method according to any one of claims 1 to 5, further comprising, after determining actual data of wind power output and actual data of photoelectric output to be transmitted to a power grid in a current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value, and the photoelectric direct output value:
triggering the transmission operation of the wind power output actual data and the photoelectric output actual data in the current period, and controlling a preset prompt module to send out corresponding prompts after successful transmission.
7. The method for energy-based stable power transmission of claim 6, wherein the prompting comprises: audible prompts and/or visual prompts.
8. An energy-based stable power transmission system, comprising:
the first determining unit is used for determining wind power output prediction data and photoelectric output prediction data in the current period;
the second determining unit is used for determining a first average value of the wind power output prediction data and a second average value of the photoelectric output prediction data;
the third determining unit is used for determining a wind power direct output value and a photoelectric direct output value of the current period based on a predetermined wind power and photoelectric output function, a preset probability density value, the first average value and the second average value;
and the fourth determining unit is used for determining wind power output actual data and photoelectric output actual data which are required to be transmitted to a power grid in the current period based on the wind power output prediction data, the photoelectric output prediction data, the wind power direct output value and the photoelectric direct output value.
9. An energy-based stable power transmission device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the energy base stable transmission method according to any one of claims 1 to 7 when executing said computer program.
10. A computer readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the steps of the energy base stable transmission method according to any of claims 1 to 7.
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