CN113839412B - Hydrogen production peak regulation calculation method and device for photovoltaic power station - Google Patents

Hydrogen production peak regulation calculation method and device for photovoltaic power station Download PDF

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CN113839412B
CN113839412B CN202110680995.0A CN202110680995A CN113839412B CN 113839412 B CN113839412 B CN 113839412B CN 202110680995 A CN202110680995 A CN 202110680995A CN 113839412 B CN113839412 B CN 113839412B
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photovoltaic power
time
hydrogen
power generation
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CN113839412A (en
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罗丽珍
彭文博
高虎
李晓磊
田鸿翔
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Huaneng Clean Energy Research Institute
Huaneng Group Technology Innovation Center Co Ltd
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Huaneng Clean Energy Research Institute
Huaneng Group Technology Innovation Center Co Ltd
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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
    • 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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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
    • 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
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Fuel Cell (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

The application provides a hydrogen production peak shaving calculation method and device of a photovoltaic power station, comprising the following steps: dividing the whole day into a first time period, a second time period and a third time period according to the photovoltaic power generation amount and the power grid load amount; adopting a corresponding working mode according to the current time period; wherein, in each working mode, a working period is defined as a preset time; and judging after the current working period is finished, entering the next working period according to a judging result until the next working period is finished in one day, dividing the whole day into different time periods according to the photovoltaic power generation amount and the power grid load amount, adopting corresponding working modes for the different time periods, and managing the energy of the photovoltaic power station in one day to ensure that the operation cost of the photovoltaic power station is the lowest and the maximum profit is obtained.

Description

Hydrogen production peak regulation calculation method and device for photovoltaic power station
Technical Field
The application relates to the technical field of peak shaving of photovoltaic power stations, in particular to a hydrogen production peak shaving calculation method and device of a photovoltaic power station.
Background
Because solar randomness and volatility are strong, the working state of the photovoltaic module is easily influenced by solar irradiance and load change, and therefore, energy optimization management is carried out on the photovoltaic power station to determine the current available energy and the used energy of each component in the system. The method for producing hydrogen and oxygen by using electrolyzed water to fill valleys and using hydrogen energy storage hydrogen fuel cells to generate power and peak clipping is one of effective peak clipping modes of photovoltaic power stations. However, both the loss of electrolysis hydropower energy and the loss of hydrogen fuel cell power generation chemical energy will affect the optimal management of the photovoltaic power plant. When the output power of the photovoltaic unit changes, the electrolytic water quantity is regulated and controlled in time by an optimal model, the power plant profit maximization is realized while the electric energy demand of a large power grid is met, and the method becomes one of the important problems of hydrogen production peak regulation research.
Disclosure of Invention
The present application aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the application aims to provide a hydrogen production peak regulation calculation method of a photovoltaic power station, which divides the whole day into different time periods according to the photovoltaic power generation amount and the power grid load amount, adopts corresponding working modes for the different time periods, and manages the energy of the photovoltaic power station in one day so as to ensure that the operation cost of the photovoltaic power station is the lowest and obtain the maximum profit.
In order to achieve the purpose, the hydrogen production peak shaving calculation method of the photovoltaic power station provided by the application comprises the following steps of:
dividing the whole day into a first time period, a second time period and a third time period according to the photovoltaic power generation amount and the power grid load amount;
adopting a corresponding working mode according to the current time period;
wherein, in each working mode, a working period is defined as a preset time;
and after the current working period is finished, judging, and entering the next working period according to the judging result until one day is finished.
Further, adopting the corresponding working mode according to the current time period specifically includes:
during the first period, when P PV ≤E n When the system is used, all electric quantity is used for surfing the Internet; when P PV >E n When the water is electrolyzed, the surplus electric quantity is used for producing hydrogen;
in the second period of time, when P PV ≤E n When the system is used, all electric quantity is used for surfing the Internet; when P PV >E n When the surplus electric quantity is lost;
in the third period of time,
when (when)Supplementing grid electricity using a hydrogen fuel cell;
when (when)Then the hydrogen fuel cell is not used to supplement grid power, where P PV Representing the effective power generation of the photovoltaic, E n Representing the load demand of the power grid, E R Represents the peak regulation energy yield, e s E, for the online electricity price h For 1mol hydrogen price e l The electricity price is photovoltaic surplus electricity quantity.
Further, the lost electric quantity is P PV -E n 。
Further, the peak regulation energy yield is the product of the hydrogen production efficiency and the hydrogen power generation efficiency of the photovoltaic power generation system, namely E R =η·λ, where η represents the electrolysis water efficiency and λ represents the hydrogen power generation efficiency.
Further, during the first period, when P PV ≤E n When the total electric quantity is used for surfing the net, the method specifically comprises the following steps:
when (when)Supplementing grid electricity using a hydrogen fuel cell;
when (when)The hydrogen fuel cell is not used to supplement grid electricity.
Further, during the first period of time, monitoring the hydrogen storage SOC of the hydrogen storage material at the time when P PV >E n When the surplus electric quantity is used for producing hydrogen by water electrolysis, the method specifically comprises the following steps,
when P left ·η·12.77≤SOC Minimum margin P is then left All used to electrolyze water.
When P left ·η·12.77>SOC Minimum margin Then arrive at the SOC Minimum margin Stopping electrolysis of water when the water is stopped, wherein P left ＝P PV -E n 。
Further, the power for supplementing the power grid electricity by using the hydrogen fuel cell is as follows: e (E) n -P PV 。
Further, the predetermined time is 5 to 60 minutes.
Further, before dividing the whole day into the first time period, the second time period and the third time period according to the photovoltaic power generation amount and the grid load amount, correcting the time division intervals of the first time period, the second time period and the third time period of the city by using an irradiation corrector.
A hydrogen production peak shaving computing device of a photovoltaic power station, comprising: the first processing unit is used for dividing the whole day into a first time period, a second time period and a third time period according to the photovoltaic power generation amount and the power grid load amount; the second processing unit is used for adopting a corresponding working mode according to the current time period; a time unit, configured to take a predetermined time as a working period in each working mode; and the judging unit is used for judging after the current working period is ended, and entering the next working period according to the judging result until one day is ended.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic flow chart of a calculation method for hydrogen production peak shaving of a photovoltaic power station according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. On the contrary, the embodiments of the application include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
Fig. 1 is a schematic flow chart of a calculation method for hydrogen production peak shaving of a photovoltaic power station according to an embodiment of the present application.
Referring to fig. 1, a hydrogen production peak shaving calculation method of a photovoltaic power station comprises the following steps:
s10, dividing the whole day into a first time period, a second time period and a third time period according to the photovoltaic power generation amount and the power grid load amount;
in this embodiment, before the first scheduling every day, the photovoltaic power generation amount is predicted according to weather, the whole day 24h is divided into three periods including a photovoltaic peak period, a photovoltaic Fu Gu period and a photovoltaic flat period, before the current operation period is determined, the power grid load amount is predicted, the whole day 24h is also divided into three periods including a peak period, a valley period and a flat period by using the large power grid load requirement, wherein the photovoltaic power generation amount and the power grid load amount are both the peak period and the flat period, specifically, the beijing time (11:00-16:00) is a photovoltaic peak period, the period is one of the peak periods, the beijing time (07:00-11:00, 16:00-19:00) is a photovoltaic flat period, the period is a level period, the second period is a photovoltaic power generation amount is a valley period, the power grid load amount is a valley period, specifically, the beijing time (00:00-07:00) is a beijing time (23:00-24:00) is a beijing time period, and the third period is a photovoltaic power generation amount is a valley period, and the power grid load amount is a beijing time (19:00-00).
S20, adopting a corresponding working mode according to the current time period;
wherein, in each working mode, a working period is defined as a preset time;
and after the current working period is finished, judging, and entering the next working period according to the judging result until one day is finished.
It can be understood that in the same working mode, a plurality of working periods exist, after one period is finished, relevant variables such as effective photovoltaic power generation amount, power grid load demand amount and the like are compared, the next working period is entered according to a judging result after comparison, and through the setting of the working periods, the operation scheduling of the photovoltaic power station can be more flexible.
According to the application, the whole day is divided into a plurality of time periods through the conditions of photovoltaic power generation capacity and grid load capacity, corresponding working modes are set according to the characteristics of each time period, different working modes are adopted in different time periods, the peak regulation mode of the photovoltaic power station is optimized, and the effect of peak clipping and valley filling of a large grid is realized while the real-time and economical operation of the photovoltaic power station is realized.
The adoption of the corresponding working mode according to the current time period specifically comprises the following steps:
during the first period, since the electricity is used in peak and flat periods, everything is heavy with large grid loads. When P PV ≤E n When the system is used, all electric quantity is used for surfing the Internet; when P PV >E n When the hydrogen is produced by water electrolysis, the surplus electric quantity is used for storing electric energy;
in the second time period, the photovoltaic does not generate electricity or the photovoltaic power generation voltage is smaller than the electrolysis water voltage, at the moment, the efficiency of the photovoltaic power station is the lowest, the load demand of the power grid is the lowest, and when P is the same PV ≤E n When the system is used, all electric quantity is used for surfing the Internet; when P PV >E n When the surplus electric quantity is lost, so as to avoid disturbance to the power grid, specifically, the calculation method of the lost electric quantity is that the lost electric quantity is P PV -E n The operation condition of the photovoltaic power station can be accurately monitored;
in a third time period, the photovoltaic does not generate electricity or the photovoltaic power generation voltage is smaller than the electrolysis water voltage, at the moment, the efficiency of the photovoltaic power station is lowest, the load demand of the power grid is highest, and therefore the hydrogen fuel cell is needed to supply power in a standby mode so as to meet the load demand of the power grid.
When (when)Supplementing grid electricity using a hydrogen fuel cell;
when (when)Then the hydrogen fuel cell is not used to supplement grid power, where P PV Representing the effective power generation of the photovoltaic, E n Representing the load demand of the power grid, E R Represents the peak regulation energy yield, e s E, for the online electricity price h For 1mol hydrogen price e l The electricity price of the photovoltaic surplus electricity quantity is obtained, wherein the peak regulation energy yield is the product of the hydrogen production efficiency and the hydrogen power generation efficiency of the photovoltaic power generation system, namely E R =η·λ, where η represents the electrolysis water efficiency and λ represents the hydrogen power generation efficiency.
The application provides a hydrogen production peak regulation calculation method of a photovoltaic power station, which aims at the photovoltaic power generation characteristic, uses different working modes, uses electrolyzed water to produce hydrogen and store energy when the photovoltaic power generation capacity is surplus to a large power grid, supplements power grid power consumption in the power grid power consumption peak period, and establishes different energy scheduling strategies by monitoring the photovoltaic power generation power and the residual capacity of a hydrogen storage material, the hydrogen price and the internet power price in different operation periods, thereby realizing the real-time economic operation of the photovoltaic power station and playing a role of peak clipping and valley filling to the large power grid.
During the first period, when P PV ≤E n When the system is used for surfing the internet, the whole electric quantity is used for surfing the internet, and the system specifically comprises:
when (when)Supplementing grid electricity using a hydrogen fuel cell;
when (when)The hydrogen fuel cell is not used to supplement grid electricity.
When the effective photovoltaic power generation amount is smaller than the power grid load demand amount, the current online electricity price, the current hydrogen price and the peak regulation energy yield are combined to judge whether the hydrogen fuel cell is used for supplementing power grid power consumption, and the real-time economic operation of the photovoltaic power station is realized while peak clipping and valley filling are realized.
During the first period, monitoring the hydrogen storage SOC of the hydrogen storage material at the time when P PV >E n When the surplus electric quantity is used for producing hydrogen by water electrolysis, the method specifically comprises the following steps,
when P left ·η·12.77≤SOC Minimum margin P is then left All used to electrolyze water.
When P left ·η·12.77>SOC Minimum margin Then arrive at the SOC Minimum margin Stopping electrolysis of water when the water is stopped, wherein P left ＝P PV -E n 。
When the effective power generation amount of the photovoltaic is larger than the load demand amount of the power grid, the water electrolysis and energy storage of the photovoltaic power station are carried out, whether the operation is continued or not is judged by combining the hydrogen storage amount of the hydrogen storage material at the time, and the operation mode of a plurality of working cycles in one working mode is adopted for scheduling.
The power for supplementing the power consumption of the power grid by using the hydrogen fuel cell is as follows: e (E) n -P PV In the embodiment, the hydrogen fuel cell is used for supplementing the loss part of the power grid, so that the maximum utilization of energy is realized.
The preset time is 5-60 min, preferably 30min, so that 48 working cycles can be carried out all the day, the working mode of the photovoltaic power station can be flexibly adjusted according to the running condition, and the energy conservation and consumption reduction are facilitated.
Dividing the whole day into a first time period, a second time period and a third time period according to the photovoltaic power generation amount and the power grid load amount, and correcting the time division intervals of the first time period, the second time period and the third time period of the city by using an irradiation corrector.
The cities in each country can use the same time, but some countries have large longitude spans, different cities have large time zone spans, peak-valley time periods have certain differences, an initial peak Gu Ping period of a model is given, and an irradiation corrector is used for correcting the photovoltaic power generation peak-valley time periods and the power consumption peak-valley time periods of the different longitude cities.
Taking 15MW hydrogen peak shaving photovoltaic power station as an example, a 1MW electrolysis peak shaving system is provided, and 8772kg of hydrogen storage material with a hydrogen storage rate of 5.7% is arranged. With the calculation method, 48 times of calculation are circulated every day, and profit improvement is realized by 20%.
A hydrogen production peak shaving computing device of a photovoltaic power station, comprising: the first processing unit is used for dividing the whole day into a first time period, a second time period and a third time period according to the photovoltaic power generation amount and the power grid load amount; the second processing unit is used for adopting a corresponding working mode according to the current time period; a time unit, configured to take a predetermined time as a working period in each working mode; and the judging unit is used for judging after the current working period is ended, and entering the next working period according to the judging result until one day is ended.
The hydrogen production peak regulation calculation device of the photovoltaic power station further comprises a monitoring unit and an irradiation correction unit, wherein the monitoring unit is used for monitoring the hydrogen storage SOC of the hydrogen storage material at the time, and the irradiation correction unit is used for correcting time division intervals of a first time period, a second time period and a third time period of a city.
It should be appreciated that those skilled in the art will appreciate that embodiments of the application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (9)

1. The hydrogen production peak regulation calculation method of the photovoltaic power station is characterized by comprising the following steps of:
dividing the whole day into a first time period, a second time period and a third time period according to the photovoltaic power generation amount and the power grid load amount; the photovoltaic power generation amount and the power grid load amount are both peaks, and the normal period is the first period; the second time period is the time period when the photovoltaic power generation amount and the grid load amount are both valley time periods; the photovoltaic power generation amount is in a valley period, and the power grid load amount is in a peak period, and the photovoltaic power generation amount is in the third period;
adopting a corresponding working mode according to the current time period;
wherein, in each working mode, a working period is defined as a preset time;
judging after the current working period is finished, and entering the next working period according to the judging result until one day is finished;
the adoption of the corresponding working mode according to the current time period specifically comprises the following steps:
during the first period, when P PV ≤E n When the system is used, all electric quantity is used for surfing the Internet; when P PV >E n When the water is electrolyzed, the surplus electric quantity is used for producing hydrogen;
in the second period of time, when P PV ≤E n When the system is used, all electric quantity is used for surfing the Internet; when P PV >E n When the surplus electric quantity is lost;
in the third period of time,
when e s •（E n -P PV ）>+/>Supplementing power grid power by using a hydrogen fuel cell;
when e s •（E n -P PV ）<+/>The hydrogen fuel cell is not used for supplementing power grid power consumption, wherein P PV Representing the effective power generation of the photovoltaic, E n Representing the load demand of the power grid, E R Represents the peak regulation energy yield, e s E, for the online electricity price h Price of 1mol hydrogen->The electricity price is photovoltaic surplus electricity quantity.
2. The method for calculating the peak shaver for hydrogen production of a photovoltaic power plant according to claim 1, wherein the lost electric quantity is P PV -E n 。
3. The method for calculating the peak regulation of hydrogen production of a photovoltaic power station according to claim 1, wherein the peak regulation energy yield is the product of the hydrogen production efficiency and the hydrogen power generation efficiency of a photovoltaic power generation system, namelyWhere η represents the electrolysis water efficiency, and λ represents the hydrogen power generation efficiency.
4. The method for calculating the peak shaver for hydrogen production of a photovoltaic power plant according to claim 1, wherein, in the first period of time, when P PV ≤E n When the total electric quantity is used for surfing the net, the method specifically comprises the following steps:
when e s •（E n -P PV ）>+/>Supplementing power grid power by using a hydrogen fuel cell;
when e s •（E n -P PV ）<+/>The hydrogen fuel cell is not used to supplement grid electricity.
5. The method of claim 1, further comprising monitoring a current hydrogen reserves SOC of the hydrogen storage material during the first time period, when P PV >E n When the surplus electric quantity is used for producing hydrogen by water electrolysis, the method specifically comprises the following steps,
when P left •η•12.77≤SOC Minimum margin P is then left All are used for electrolyzing water;
when P left •η•12.77>SOC Minimum margin Then arrive at the SOC Minimum margin Stopping electrolysis of water when the water is stopped, wherein P left =P PV -E n 。
6. The light of claim 4The hydrogen production peak regulation calculation method of the photovoltaic power station is characterized in that the power for supplementing power grid electricity by using a hydrogen fuel cell is as follows: e (E) n -P PV 。
7. The method for calculating the hydrogen production peak shaver of the photovoltaic power station according to claim 1, wherein the preset time is 5-60 min.
8. The method for calculating the peak shaver for hydrogen production of the photovoltaic power station according to claim 1, wherein the method further comprises the step of correcting the time division intervals of the first time zone, the second time zone and the third time zone of the city by using an irradiation corrector before dividing the whole day into the first time zone, the second time zone and the third time zone according to the photovoltaic power generation amount and the grid load amount.
9. The utility model provides a photovoltaic power plant's hydrogen manufacturing peak shaving calculation device which characterized in that includes:
the first processing unit is used for dividing the whole day into a first time period, a second time period and a third time period according to the photovoltaic power generation amount and the power grid load amount; the photovoltaic power generation amount and the power grid load amount are both peaks, and the normal period is the first period; the second time period is the time period when the photovoltaic power generation amount and the grid load amount are both valley time periods; the photovoltaic power generation amount is in a valley period, and the power grid load amount is in a peak period, and the photovoltaic power generation amount is in the third period;
the second processing unit is used for adopting a corresponding working mode according to the current time period;
a time unit, configured to take a predetermined time as a working period in each working mode;
the judging unit is used for judging after the current working period is ended, and entering the next working period according to the judging result until one day is ended;
the adoption of the corresponding working mode according to the current time period specifically comprises the following steps:
during the first period, when P PV ≤E n When the system is used, all electric quantity is used for surfing the Internet; when P PV >E n When the surplus electric quantity is used for electricityWater-splitting hydrogen production;
in the second period of time, when P PV ≤E n When the system is used, all electric quantity is used for surfing the Internet; when P PV >E n When the surplus electric quantity is lost;
in the third period of time,
when e s •（E n -P PV ）>+/>Supplementing power grid power by using a hydrogen fuel cell;
when e s •（E n -P PV ）<+/>The hydrogen fuel cell is not used for supplementing power grid power consumption, wherein P PV Representing the effective power generation of the photovoltaic, E n Representing the load demand of the power grid, E R Represents the peak regulation energy yield, e s E, for the online electricity price h Price of 1mol hydrogen->The electricity price is photovoltaic surplus electricity quantity.
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