CN112491147A - Hydrogen energy storage comprehensive energy configuration system and method - Google Patents

Hydrogen energy storage comprehensive energy configuration system and method Download PDF

Info

Publication number
CN112491147A
CN112491147A CN202011265321.6A CN202011265321A CN112491147A CN 112491147 A CN112491147 A CN 112491147A CN 202011265321 A CN202011265321 A CN 202011265321A CN 112491147 A CN112491147 A CN 112491147A
Authority
CN
China
Prior art keywords
energy
hydrogen
electric
heat
storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011265321.6A
Other languages
Chinese (zh)
Inventor
陈来军
梅生伟
司杨
郑天文
熊宇峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qinghai University
Original Assignee
Qinghai University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qinghai University filed Critical Qinghai University
Priority to CN202011265321.6A priority Critical patent/CN112491147A/en
Publication of CN112491147A publication Critical patent/CN112491147A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02J15/00—Systems for storing electric energy
    • H02J15/008—Systems for storing electric energy using hydrogen as energy vector
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • 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
    • Y02E60/14—Thermal energy storage
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuel Cell (AREA)

Abstract

The invention provides a hydrogen energy storage comprehensive energy configuration system and a method, which comprises an energy production mechanism for supplying energy, a hydrogen energy storage mechanism for storing energy and a load mechanism for consuming energy, wherein the energy production mechanism is used for supplying power to the energy; the load mechanism includes electric load mechanism and heat load mechanism, energy production mechanism with electric load mechanism is linked together through the electric energy transfer chain, hydrogen energy storage mechanism is used for receiving the electric energy of electric energy transfer chain and converts the electric energy into heat energy and hydrogen energy, and heat energy transmission is to the heat energy transfer chain, and then hydrogen energy storage mechanism with electric load mechanism with carry out the energy antithetical couplet of electricity, heat, hydrogen between the heat load mechanism and supply. Through the embodiment, the solar energy utilization stability of the system can be improved, and a user can obtain a stable energy supply requirement.

Description

Hydrogen energy storage comprehensive energy configuration system and method
Technical Field
The invention relates to the technical field of hydrogen energy storage configuration, in particular to a hydrogen energy storage comprehensive energy configuration system and a hydrogen energy storage comprehensive energy configuration method.
Background
In northwest China, such as the province of Qinghai, and the like, the photovoltaic resources are rich, but users such as farmers and herdsmen are distributed extremely dispersedly, the reliability and the economy of power supply by adopting a large power grid are lacked, and an independent energy supply system is suitable for supplying power to local users of the farmers and the herdsmen. And the natural conditions of high and cold areas cause high heat demand of users.
The efficiency and the service life of equipment such as a common storage battery are greatly influenced by the excessively high heat demand, so that the equipment such as the storage battery is not suitable for the high heat demand, the solar energy fluctuation and the randomness are high, and the local reliable and stable energy supply demand is difficult to meet.
Disclosure of Invention
The embodiment of the invention provides a hydrogen energy storage comprehensive energy configuration system, which is used for solving the technical problem that in the prior art, a user cannot obtain a stable energy supply requirement due to low solar stability.
The embodiment of the invention provides a hydrogen energy storage comprehensive energy configuration system, which comprises: the energy source generating mechanism is used for providing energy source power supply, the hydrogen energy storage mechanism is used for storing energy sources, and the load mechanism is used for consuming energy sources;
the load mechanism includes electric load mechanism and heat load mechanism, energy production mechanism with electric load mechanism is linked together through the electric energy transfer chain, hydrogen energy storage mechanism is used for receiving the electric energy of electric energy transfer chain and converts the electric energy into heat energy and hydrogen energy, and heat energy transmission is to the heat energy transfer chain, and then hydrogen energy storage mechanism with electric load mechanism with carry out the energy antithetical couplet of electricity, heat, hydrogen between the heat load mechanism and supply.
According to the hydrogen energy storage comprehensive energy configuration system provided by the embodiment of the invention, the energy production mechanism comprises a photovoltaic panel, and the photovoltaic panel is used for converting light energy into electric energy to be transmitted to the electric energy transmission line;
the energy production mechanism further comprises a wind power generation mechanism which is used for receiving wind energy, converting the wind energy into electric energy and transmitting the electric energy to the electric energy transmission line.
According to the hydrogen energy storage comprehensive energy configuration system provided by the embodiment of the invention, the hydrogen energy storage mechanism comprises an electrolytic cell, a hydrogen storage tank and a fuel cell, the electrolytic cell is communicated with the electric energy conveying line, the fuel cell is respectively communicated with the heat energy conveying line and the electric energy conveying line, and the hydrogen storage tank is respectively communicated with the electrolytic cell and the fuel cell.
According to one embodiment of the invention, the hydrogen energy storage comprehensive energy configuration system further comprises a heat storage mechanism which is communicated with the heat energy transmission line.
According to one embodiment of the invention, the hydrogen energy storage integrated energy configuration system further comprises an electric heating mechanism, which is communicated with the electric energy transmission line and the thermal energy transmission line and is used for receiving the electric energy of the electric energy transmission line and further converting the electric energy into the thermal energy to be transmitted to the thermal energy transmission line.
According to one embodiment of the invention, the hydrogen energy storage comprehensive energy configuration system further comprises a hydrogen energy storage optimization system, and water, electricity and heat information in the hydrogen energy storage mechanism is managed according to set logic, so that energy interaction between the hydrogen energy storage optimization system and the energy production mechanism and between the hydrogen energy storage optimization system and the load mechanism is realized.
According to the hydrogen energy storage integrated energy configuration system, the load mechanisms comprise industrial loads, agricultural loads and living loads.
The embodiment of the invention also provides a hydrogen energy storage comprehensive energy configuration method, which comprises the following steps: receiving the electric energy transmitted by the electric energy transmission line through the hydrogen energy storage mechanism;
converting the electric energy by using the hydrogen energy storage mechanism so as to realize interaction among the electric energy, the heat energy and the hydrogen energy;
and acquiring conversion data among the heat energy, the hydrogen energy and the electric energy, and further constructing an electric energy, heat energy and hydrogen energy combined supply system so as to optimize energy configuration among the system energy production mechanism, the hydrogen energy storage mechanism and the load mechanism.
According to the hydrogen energy storage comprehensive energy configuration method provided by the embodiment of the invention, the acquiring of the conversion data among the heat energy, the hydrogen energy and the electric energy comprises the following steps:
the method comprises the steps of obtaining conversion data of electrolytic cell electric heating, obtaining conversion data of electrolytic cell electric hydrogen production and obtaining conversion data of fuel cell heating and hydrogen production.
According to an embodiment of the invention, before the receiving, by the hydrogen energy storage mechanism, the electric energy transmitted by the electric energy transmission line, the method for configuring the hydrogen energy storage integrated energy further includes:
and setting an energy management system, wherein the energy management system comprises an electric energy management unit consumed by an electric heating mechanism and an electric energy management unit consumed by a hydrogen energy storage mechanism, and automatically distributing the electric energy distributed by the electric heating mechanism and the hydrogen energy storage mechanism according to the logical judgment of the energy management system.
The hydrogen energy storage comprehensive energy configuration system and the method provided by the invention comprise an energy production mechanism, a hydrogen energy storage mechanism and a load mechanism, wherein the hydrogen energy storage mechanism can be used for storing and converting electric energy transmitted by the energy production mechanism, the hydrogen energy can be converted into the electric energy when the electric load mechanism needs more electricity, and the hydrogen energy can be converted into more heat for demand when the heat load mechanism needs more heat. Therefore, the stability of the comprehensive energy configuration system can be adjusted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a structural view of a hydrogen energy storage integrated energy configuration system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a hydrogen energy storage integrated energy configuration method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the electric heating load of the hydrogen energy storage integrated energy configuration system in winter and summer on the same day according to the embodiment of the invention;
FIG. 4 is a schematic diagram of photovoltaic output of a hydrogen energy storage integrated energy configuration system in winter and summer on the same day according to an embodiment of the invention;
FIG. 5 is a schematic diagram of the hydrogen energy storage integrated energy configuration system of the present invention and the prior art electrical heat balance between winter and summer using a battery system;
FIG. 6 is a schematic diagram of the hydrogen energy storage integrated energy configuration system of the present invention at different thermoelectric ratios than prior art battery systems;
fig. 7 is a schematic diagram of the total cost of the hydrogen energy storage integrated energy configuration system according to the embodiment of the invention at different new energy costs compared with the prior art in which a battery system is adopted.
Reference numerals:
10. an energy production mechanism;
20. a hydrogen energy storage mechanism; 210. an electrolytic cell; 220. a hydrogen storage tank; 230. a fuel cell;
30. a load mechanism; 310. an electrical load mechanism; 320. a thermal load mechanism;
40. an electric power transmission line;
50. a heat energy transfer line;
60. a heat storage mechanism;
70. an electric heating mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a structural view of a hydrogen energy storage integrated energy configuration system according to an embodiment of the present invention. The invention provides a hydrogen energy storage comprehensive energy configuration system, which comprises: an energy production means 10 for supplying power from an energy source, a hydrogen energy storage means 20 for storing the energy source, and a load means 30 for consuming the energy source. The load mechanism 30 comprises an electric load mechanism 310 and a heat load mechanism 320, the energy production mechanism 10 is communicated with the electric load mechanism 310 through an electric energy transmission line 40, the hydrogen energy storage mechanism 20 is used for receiving the electric energy of the electric energy transmission line 40 and converting the electric energy into heat energy and hydrogen energy, the heat energy is transmitted to the heat energy transmission line 50, and then the hydrogen energy storage mechanism 20, the electric load mechanism 310 and the heat load mechanism 320 are used for supplying electricity, heat and hydrogen energy together.
It should be noted that the invention is used in areas with abundant photovoltaic resources and distributed users. And the local area is in a high and cold natural condition, so the heat demand is high. Specifically, in one embodiment of the present invention, the energy generation mechanism 10 may include a photovoltaic panel for converting light energy into electrical energy for transmission to the electrical energy transmission line 40. A wind power generation mechanism may also be included for receiving wind energy and converting it to electrical energy for transmission to the power transmission line 40. The photovoltaic panel is taken as an example for explanation. The wind power generation mechanism is consistent with the principle of the photovoltaic panel, and is not explained in more detail here.
The heat storage mechanism 60 is communicated with the heat energy transmission line 50. The hydrogen energy storage mechanism 20 includes an electrolytic cell 210, a hydrogen storage tank 220, and a fuel cell 230, the electrolytic cell 210 is communicated with the electric power delivery line 40, the fuel cell 230 is communicated with the thermal power delivery line 50 and the electric power delivery line 40, respectively, and the hydrogen storage tank 220 is communicated with the electrolytic cell 210 and the fuel cell 230, respectively. The electrolysis cell 210 and the fuel cell 230 are used to achieve interconversion of electric energy and hydrogen energy, and the generated thermal energy may be stored in the heat storage mechanism 60 in the form of hot water by a heat exchanger. In turn, the electrical power and thermal power lines 40, 50 deliver electrical and thermal power to the load mechanisms 30, which may include, but are not limited to, industrial loads, agricultural loads, and domestic loads, 30. The electric heating mechanism 70 is communicated with the electric energy transmission line 40 and the thermal energy transmission line 50, and is used for receiving the electric energy of the electric energy transmission line 40 and converting the electric energy into the thermal energy to be transmitted to the thermal energy transmission line 50.
In an embodiment of the present invention, the hydrogen energy storage optimization system is further included, and water, electricity, and thermal information in the hydrogen energy storage mechanism 20 are managed according to a set logic, so as to realize energy interaction between the hydrogen energy storage optimization system and the energy production mechanism 10 and the load mechanism 30.
Please refer to fig. 2, and fig. 2 is a flowchart of a hydrogen energy storage integrated energy configuration method according to an embodiment of the present invention.
The invention also provides a hydrogen energy storage comprehensive energy configuration method, which comprises the following steps:
and S110, receiving the electric energy transmitted by the electric energy transmission line through the hydrogen energy storage mechanism.
Before receiving the electric energy transmitted by the electric energy transmission line through the hydrogen energy storage mechanism, the hydrogen energy storage mechanism further comprises: and setting an energy management system, wherein the energy management system comprises an electric energy management unit consumed by the electric heating mechanism and an electric energy management unit consumed by the hydrogen energy storage mechanism, and automatically distributing the electric energy distributed by the electric heating mechanism and the hydrogen energy storage mechanism according to logical judgment of the energy management system.
And S120, converting the electric energy by using a hydrogen energy storage mechanism so as to realize interaction among the electric energy, the heat energy and the hydrogen energy.
Acquiring conversion data among thermal energy, hydrogen energy and electric energy, comprising: the method comprises the steps of obtaining conversion data of electrolytic cell electric heating, obtaining conversion data of electrolytic cell electric hydrogen production and obtaining conversion data of fuel cell heating and hydrogen production. Further, the utilization of energy in the energy configuration system can be optimized according to the conversion between the thermoelectricity of the electrolysis cell and the fuel cell.
S130, conversion data among the heat energy, the hydrogen energy and the electric energy are obtained, and then an electricity, heat and hydrogen combined supply system is constructed so as to optimize energy configuration among the energy production mechanism, the hydrogen energy storage mechanism and the load mechanism.
The following explains the prior art, in which photovoltaic power generation is taken as an example, photovoltaic power generation, storage batteries and capacities of electric heating and heat storage devices need to be configured. The cost of various types of equipment when meeting electrical load requirements needs to be considered. And light abandonment or loss of load phenomena caused by solar energy, load fluctuation and other factors need to be considered. The capacity configuration is thus divided into two parts, as follows:
min C＝Ci+Co；
wherein C is the annual total cost of the system, CiThe annual investment cost of various devices. CoThe annual running cost of the system consists of light abandonment and penalty cost of load loss.
Specifically, the method comprises the following steps:
Figure BDA0002775858620000071
Figure BDA0002775858620000072
wherein Q isjAnd SjRespectively representing the planning capacity and the unit capacity construction cost of the j-th equipment. XijThe annual operation and maintenance cost of the equipment accounts for the proportion of the construction cost. m is the system life and r is the reference discount rate.
Figure BDA0002775858620000073
The total power loss load, the total heat loss load and the total light abandon quantity of the whole year; beta is ae、βh、βpvAnd the punishment unit price of power loss load, heat loss load and light abandon. Further, the energy balance of the electric energy and the heat energy is constrained as follows:
Figure BDA0002775858620000074
Figure BDA0002775858620000075
Ee(24)＝Ee(0)；
wherein eta ispv(t) is the photovoltaic output factor in the tth hour, the value is between 0 and 1, QpvCapacity is planned for the photovoltaic cell. Etapv(t)QpvAnd
Figure BDA0002775858620000076
the maximum photovoltaic output and the abandoned light power are respectively. Ee(t) is the real-time storage capacity of the storage battery,
Figure BDA0002775858620000077
capacity is planned for the battery pack. PLD(t) and PlossAnd (t) respectively predicting the power of the electric load and the power loss load.
Figure BDA0002775858620000078
And Ee(24)＝Ee(0) The method is characterized in that the method is restricted by upper and lower limits of the electricity storage quantity at the current moment, the former ensures that the electricity storage quantity does not exceed the limit of the configuration capacity of the storage battery, and the latter ensures that the electricity storage quantities at the beginning and the end of the day period are equal.
Further, the air conditioner is provided with a fan,
Figure BDA0002775858620000079
Figure BDA00027758586200000710
Eh(24)＝Eh(0)。
wherein E ishAnd (t) storing heat in real time by the heat storage device. HehAnd (t) means the heat generation power of the electric heating device in the t hour respectively. HLD(t) and Hloss(t) predicted heat load and heat loss load power, respectively. EtahFor heat supply network efficiency.
Figure BDA00027758586200000711
And Eh(24)＝Eh(0) The heat storage capacity is limited by the upper limit and the lower limit of the heat storage capacity at the current moment, the former ensures that the heat storage capacity does not exceed the limit of the configuration capacity of the heat storage tank, and the latter ensures that the heat storage capacities at the beginning and the end of the daily cycle are equal.
The characteristics of the electric heating mechanism are constrained as follows:
ηehPeh(t)＝Heh(t)；0≤Peh(t)≤Qeh。
wherein eta isehFor electrical heating efficiency, QehCapacity is planned for the electric heating device. Specifically, the capacity optimization configuration model of the photovoltaic storage battery independent energy supply system can be solved by adopting MATLAB and cplex in a combined mode.
In one embodiment of the present invention, a hydrogen energy storage mechanism is provided to adjust the degree of imbalance of the energy configuration. In an embodiment of the invention, the hydrogen energy storage integrated energy configuration system comprises an electrolyzer thermoelectric balance system and a fuel cell thermoelectric balance system.
The electrolytic cell thermoelectric balance system comprises the following components:
the electrolytic cell mainly converts electric energy into hydrogen for storage through water electrolysis, and the hydrogen production efficiency is as follows:
Figure BDA0002775858620000081
wherein eta isel、Vel、IelAnd PelRespectively the hydrogen production efficiency, terminal voltage, input current and input electric power of the electrolytic cell, velΔ G is the Gibbs free energy change of the electrolyzed water for the molar rate of hydrogen production by the electrolyzer. The efficiency of the cell can be controlled by adjusting current, etc., but efficiency is generally considered as a constant simplification in capacity configuration.
The thermoelectric balance equation of the cell is as follows:
Figure BDA0002775858620000082
wherein the content of the first and second substances,
Figure BDA0002775858620000083
is the rate of change of internal energy of the cell, CelAnd TelRespectively the electrolytic bath heat capacity and the working temperature.
Figure BDA0002775858620000084
And
Figure BDA0002775858620000085
respectively the environmental heat loss power of the electrolytic cell and the heat absorption power of the heat exchange working medium water, and the heat absorption power is stored in the form of hot water to be used as a heat source of a heat supply network. When the electrolytic cell is stably operated, the temperature is basically unchanged, and the environmental heat loss is small, so that the electrolytic cell has the advantages of basically unchanged temperature and small environmental heat loss
Figure BDA0002775858620000086
And
Figure BDA0002775858620000087
both terms can be ignored. In summary, the thermoelectric balance system of the electrolyzer is as follows:
Figure BDA0002775858620000091
wherein HelGenerating heat power for the electrolytic cell. Further, the fuel cell mainly performs conversion of hydrogen energy into electric energy, and the power generation efficiency is as follows:
Figure BDA0002775858620000092
wherein eta isfc、Vfc、IfcAnd PfcRespectively, the power generation efficiency, terminal voltage, input current and output electric power of the fuel cell, vfcIs the molar rate of hydrogen consumption by the fuel cell. The efficiency of the fuel cell is also typically considered in constant simplification in capacity configuration.
The thermoelectric balance of the fuel cell is as follows:
Figure BDA0002775858620000093
wherein the content of the first and second substances,
Figure BDA0002775858620000094
is the rate of change of internal energy of the fuel cell itself, CfcAnd TfcRespectively fuel cell heat capacity and operating temperature.
Figure BDA0002775858620000095
And
Figure BDA0002775858620000096
respectively of fuel cellsThe heat energy of the environment and the heat absorption power of the heat exchange working medium water are also stored in the heat storage device in the form of hot water. Similar to the electrolytic cell, the electrolytic cell is provided with a water tank,
Figure BDA0002775858620000097
and
Figure BDA0002775858620000098
both terms can be ignored.
In summary, the thermoelectric balance system of the fuel cell is as follows:
Figure BDA0002775858620000099
wherein HfcGenerating heat power for the fuel cell.
Therefore, compared with the prior art, the storage battery is replaced by the hydrogen storage tank, the electrolytic cell and the fuel cell, and then the thermoelectric system formed by the hydrogen energy storage mechanism has the following constraint conditions:
Figure BDA00027758586200000910
wherein eta ispv(t) is the photovoltaic output factor in the tth hour, the value is between 0 and 1, QpvCapacity is planned for the photovoltaic cell. Etapv(t)QpvAnd
Figure BDA0002775858620000101
the maximum photovoltaic output and the abandoned light power are respectively. Pfc(t)、Pel(t)、PehAnd (t) the power consumed by the fuel cell power generation device, the electrolysis bath and the electric heating device respectively. PLD(t) and PlossAnd (t) respectively predicting the power of the electric load and the power loss load.
And:
Figure BDA0002775858620000102
wherein E ishAnd (t) storing heat in real time by the heat storage device. Hel(t)、Hfc(t)、HehAnd (t) refers to heat generation power of the electrolytic cell, the electric heating device and the fuel cell in the tth hour respectively. HLD(t) and Hloss(t) predicted heat load and heat loss load power, respectively. EtahFor heat supply network efficiency.
In summary, the constraints of the electrolyzer, the fuel cell and the hydrogen storage tank in the thermoelectric system corresponding to the hydrogen energy storage are as follows:
0≤Pel(t)≤Qel；
0≤Pfc(t)≤Qfc；
Figure BDA0002775858620000103
Figure BDA0002775858620000104
Figure BDA0002775858620000105
Mst(24)＝Mst(0)；
wherein Q isel、QfcCapacity is planned for the electrolyser and fuel cell,
Figure BDA0002775858620000106
and
Figure BDA0002775858620000107
the planned capacity of the hydrogen storage tank is respectively the maximum hydrogen storage mass rate and the maximum hydrogen storage mass.
Figure BDA0002775858620000108
Is a hydrogen network equilibrium characteristic, whereinHFor hydrogen storage efficiency, Mel(t) and Mfc(t) Mass Rate of Hydrogen production from the electrolyzer and Hydrogen consumption from the Fuel cell, Mst(t) is a hydrogen storage tankReal-time hydrogen storage quality.
Figure BDA0002775858620000109
For the constraints of hydrogen tank power and also mass rate,
Figure BDA00027758586200001010
for real-time hydrogen storage amount upper and lower limit constraints,
Figure BDA00027758586200001011
is the minimum hydrogen storage proportion; mst(24)＝Mst(0) The hydrogen storage quantity is ensured to be unchanged from beginning to end in the daily period. The constraint conditions of the electrolytic cell, the fuel cell and the hydrogen storage tank in the thermoelectric system are linear models, and can be solved by a Matlab2018b and a CPLEX12.8 solver.
The above specific scenario is illustrated by the following example, which is as follows:
as shown in fig. 3, fig. 3 is a schematic diagram of electric heating load of a farming area hydrogen energy storage integrated energy configuration system in winter and summer on the same day. The photovoltaic output conditions in this area in winter and summer are shown in fig. 4. Fig. 4 is a schematic diagram of photovoltaic output of the hydrogen energy storage integrated energy configuration system in winter and summer on the same day according to the embodiment of the invention. The construction cost, the proportion of the operation and maintenance cost to the construction cost and the efficiency constant of each device are shown in table 1. Table 1 is as follows.
Table 1:
Figure BDA0002775858620000111
it should be noted that the high and cold climate may cause the life of the storage battery to be significantly reduced, and the storage battery may be used for 10 years before, or may be considered for 5 years in the high and cold climate. The service life of all other devices is considered uniformly according to 20 years. The loss load punishment can be taken as 10 times of the electricity price of the local user, and the light abandonment punishment is taken as 0.1 yuan/kWh.
Further, it is found that: the hydrogen energy storage mechanism provided by the invention has the following results compared with a storage battery in the same scene as shown in table 2:
table 2:
Figure BDA0002775858620000121
as above, the photovoltaic hydrogen storage system corresponding to the hydrogen energy storage mechanism and the photovoltaic storage battery system corresponding to the storage battery have the same capacity, but in the aspects of electric heating and heat storage capacity, the photovoltaic storage battery independent energy supply system is higher than the photovoltaic hydrogen storage independent energy supply system. And the photovoltaic storage battery independent energy supply system only can depend on the electric heating device as a heat source, and in order to meet the electric and heat load requirements at night, a large-capacity photovoltaic, storage battery and heat storage device are arranged in a small mode, so that the total cost is far higher than that of a photovoltaic hydrogen storage system, the service life of the storage battery is short, the reliability is low, and the total cost of the photovoltaic storage battery independent energy supply is higher.
Referring to fig. 5, fig. 5 is a schematic diagram of the hydrogen storage integrated energy configuration system according to the present invention and the electric heat balance between winter and summer using the storage battery system in the prior art, it can be known that, for electric energy satisfying the electrical load demand, about 75% of the photovoltaic hydrogen storage independent energy supply system is used for hydrogen production and storage by electrolysis, and about 25% is used for electric heating. And 70% of the independent energy supply system of the photovoltaic storage battery is used for electric heating, and 30% of the independent energy supply system of the photovoltaic storage battery is used for electric power storage. The two systems respectively satisfy the night electricity load by a fuel cell and a storage battery. The total heat production and the total heat storage during the day of the photovoltaic hydrogen storage independent energy supply system are relatively low, wherein 50% of the heat production comes from the electrolytic cell, and 40% comes from the electric heating device. And about 88% of the heat load of the photovoltaic storage battery system is supplied by electric heating, and the total heat storage quantity is 45% higher than that of the photovoltaic hydrogen storage system. The heat for the photovoltaic hydrogen storage independent energy supply system at night is provided by the heat storage device and the fuel cell, and the heat is respectively 70% and 30%; and the heat consumption at night of the photovoltaic storage battery independent energy supply system completely depends on the heat storage device. Therefore, the photovoltaic hydrogen storage system has lower requirements on electric heating and heat storage due to the fact that the electrolysis bath and the fuel cell have the combined heat and power capacity, and has higher economic benefit compared with a photovoltaic storage battery system.
Further, to analyze the difference between the configuration results and the cost of the two types of systems at different thermoelectric load ratios, the following are provided: referring specifically to fig. 6, fig. 6 is a schematic diagram illustrating the cost of the hydrogen energy storage integrated energy configuration system according to the embodiment of the present invention in comparison with the prior art in which the battery system is adopted at different thermoelectric ratios. It can be known that when the thermoelectric load is lower, such as 0.5-1, the photovoltaic configuration capacity of the system provided by the invention is higher than that of the existing photovoltaic storage battery independent energy supply system; the annual cost is obviously lower than that of a storage battery due to the relatively long service life of the hydrogen storage system. In the range, the capacity configuration result of the photovoltaic hydrogen storage independent energy supply system has no obvious change, which indicates that the potential of the photovoltaic hydrogen storage independent energy supply system in the aspect of heat supply under the low thermoelectric load ratio cannot be fully utilized. And as the proportion of the thermoelectric load is further increased to 1-4, the photovoltaic capacity of the two systems is obviously increased due to the increase of the total load demand, and the capacity and the cost of the hydrogen storage system and the storage battery are basically unchanged due to the unchanged electric load at night. Because the photovoltaic hydrogen storage independent energy supply system has the advantages of combined heat and power, long service life of the energy storage system and the like, compared with a storage battery system, the photovoltaic configuration cost of the photovoltaic hydrogen storage independent energy supply system is slightly low, the energy storage cost is reduced by 30-40%, and great advantages are shown in the total cost. In order to quantitatively compare the economic benefit difference between the two systems, the ratio of the total costs of the two systems is compared by taking the independent energy supply system of the photovoltaic storage battery as a standard in each scene, as also shown in fig. 6. The results show that the ratio of the total costs of the two types of systems tends to decrease rapidly and then increase slowly as the thermoelectric ratio increases. The optimum thermoelectric load ratio is preferably 1.3.
No matter the photovoltaic stores up independent energy supply system of hydrogen or the independent energy supply system of photovoltaic battery, the photovoltaic board is the energy source of system, therefore its construction cost directly influences configuration result and economic benefits of two types of systems. Referring to fig. 7, fig. 7 is a schematic diagram of the total cost of the hydrogen energy storage integrated energy configuration system according to the embodiment of the present invention, compared with the cost of new energy using a battery system in the prior art. Under different thermoelectric load ratios and different photovoltaic cell construction costs, the final configuration capacity and the total cost have large differences. For ease of illustration and analysis, the present invention analyzes the ratio of the total costs of the two types of systems in each scenario as an index, and the results are shown in FIG. 7. As can be seen from fig. 7, when the cost of the photovoltaic cell is in the range of-50% to + 50%, the ratio of the cost of the two types of systems is basically unchanged along with the change trend of the thermoelectric load ratio. The optimal thermoelectric load ratio of the photovoltaic hydrogen storage independent energy supply system is always about 1.3. When the cost of new energy rises, the cost of the photovoltaic hydrogen storage independent energy supply system is integrally increased relative to the cost of the existing photovoltaic storage battery independent energy supply system under each thermoelectric load proportion. On the contrary, when the cost of new energy is reduced, the economic advantages of the photovoltaic hydrogen storage independent energy supply system are more remarkable.
Because the service life and the efficiency of the storage battery are reduced under the severe cold condition, and the cost of the storage battery is obviously higher than that of a hydrogen storage system, the proportion of the photovoltaic cost in the total cost of the photovoltaic hydrogen storage independent energy supply system is relatively higher, and the total cost is more easily changed by the change of the photovoltaic cost. Therefore, the stability of the comprehensive energy configuration system under the high and cold conditions is convenient to improve by arranging the hydrogen energy storage mechanism, and the clean energy supply cost of users in corresponding regions can be reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A hydrogen energy storage integrated energy configuration system, comprising: the energy source generating mechanism is used for providing energy source power supply, the hydrogen energy storage mechanism is used for storing energy sources, and the load mechanism is used for consuming energy sources;
the load mechanism includes electric load mechanism and heat load mechanism, energy production mechanism with electric load mechanism is linked together through the electric energy transfer chain, hydrogen energy storage mechanism is used for receiving the electric energy of electric energy transfer chain and converts the electric energy into heat energy and hydrogen energy, and heat energy transmission is to the heat energy transfer chain, and then hydrogen energy storage mechanism with electric load mechanism with carry out the energy antithetical couplet of electricity, heat, hydrogen between the heat load mechanism and supply.
2. The hydrogen energy storage integrated energy distribution system according to claim 1, wherein said energy production means comprises a photovoltaic panel for converting light energy into electrical energy for transmission to said electrical energy transmission line;
the energy production mechanism further comprises a wind power generation mechanism which is used for receiving wind energy, converting the wind energy into electric energy and transmitting the electric energy to the electric energy transmission line.
3. The hydrogen energy storage integrated energy distribution system according to claim 1, wherein the hydrogen energy storage mechanism includes an electrolytic cell, a hydrogen storage tank, and a fuel cell, the electrolytic cell is communicated with the electric power transmission line, the fuel cell is communicated with the thermal energy transmission line and the electric power transmission line, respectively, and the hydrogen storage tank is communicated with the electrolytic cell and the fuel cell, respectively.
4. The hydrogen energy storage integrated energy distribution system according to claim 1, further comprising a heat storage mechanism in communication with the thermal energy transfer line.
5. The system of claim 1, further comprising an electrical heating mechanism in communication with the electrical power line and the thermal power line for receiving electrical power from the electrical power line and converting the electrical power to thermal power for transmission to the thermal power line.
6. The hydrogen energy storage integrated energy configuration system according to claim 1, further comprising a hydrogen energy storage optimization system, wherein the hydrogen energy storage optimization system manages water, electricity and heat information in the hydrogen energy storage mechanism according to a set logic, and realizes energy interaction between the hydrogen energy storage optimization system and the energy production mechanism and the load mechanism.
7. The hydrogen energy storage integrated energy configuration system of claim 1, wherein the load mechanisms comprise industrial loads, agricultural loads, and domestic loads.
8. A hydrogen energy storage integrated energy configuration method is characterized by comprising the following steps:
receiving the electric energy transmitted by the electric energy transmission line through the hydrogen energy storage mechanism;
converting the electric energy by using the hydrogen energy storage mechanism so as to realize interaction among the electric energy, the heat energy and the hydrogen energy;
and acquiring conversion data among the heat energy, the hydrogen energy and the electric energy, and further constructing an electric energy, heat energy and hydrogen energy combined supply system so as to optimize energy configuration among the system energy production mechanism, the hydrogen energy storage mechanism and the load mechanism.
9. The method for configuring integrated energy for hydrogen energy storage according to claim 8, wherein the obtaining data of conversion among thermal energy, hydrogen energy and electric energy comprises:
the method comprises the steps of obtaining conversion data of electrolytic cell electric heating, obtaining conversion data of electrolytic cell electric hydrogen production and obtaining conversion data of fuel cell heating and hydrogen production.
10. The method for configuring an integrated energy storage line according to claim 8, further comprising, before the step of receiving the electric energy transmitted from the electric energy transmission line via the hydrogen energy storage mechanism:
and setting an energy management system, wherein the energy management system comprises an electric energy management unit consumed by an electric heating mechanism and an electric energy management unit consumed by a hydrogen energy storage mechanism, and automatically distributing the electric energy distributed by the electric heating mechanism and the hydrogen energy storage mechanism according to the logical judgment of the energy management system.
CN202011265321.6A 2020-11-12 2020-11-12 Hydrogen energy storage comprehensive energy configuration system and method Pending CN112491147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011265321.6A CN112491147A (en) 2020-11-12 2020-11-12 Hydrogen energy storage comprehensive energy configuration system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011265321.6A CN112491147A (en) 2020-11-12 2020-11-12 Hydrogen energy storage comprehensive energy configuration system and method

Publications (1)

Publication Number Publication Date
CN112491147A true CN112491147A (en) 2021-03-12

Family

ID=74929985

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011265321.6A Pending CN112491147A (en) 2020-11-12 2020-11-12 Hydrogen energy storage comprehensive energy configuration system and method

Country Status (1)

Country Link
CN (1) CN112491147A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113113922A (en) * 2021-04-08 2021-07-13 国网综合能源服务集团有限公司 Comprehensive energy supply system
CN113629881A (en) * 2021-07-23 2021-11-09 青海大学 Hydrogen energy storage system with heat balance maintaining capacity and optimization method
CN113644749A (en) * 2021-07-23 2021-11-12 青海大学 Heat-hydrogen double SOC hydrogen energy storage system and optimization method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110365281A (en) * 2019-07-02 2019-10-22 西安交通大学 The cold multi-energy system of hydrogeneous electric heating and its supply and demand collaborative planning method and apparatus
CN111030104A (en) * 2019-12-25 2020-04-17 沈阳工业大学 Method for improving energy utilization rate of multi-energy system containing hydrogen storage device
CN111639824A (en) * 2020-06-20 2020-09-08 东北电力大学 Thermoelectric optimization scheduling method for regional comprehensive energy system with electric-to-gas conversion function
CN111738502A (en) * 2020-06-15 2020-10-02 上海交通大学 Multi-energy complementary system demand response operation optimization method for promoting surplus wind power consumption
CN212486131U (en) * 2020-05-28 2021-02-05 国网上海市电力公司 Comprehensive energy system based on hydrogen energy medium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110365281A (en) * 2019-07-02 2019-10-22 西安交通大学 The cold multi-energy system of hydrogeneous electric heating and its supply and demand collaborative planning method and apparatus
CN111030104A (en) * 2019-12-25 2020-04-17 沈阳工业大学 Method for improving energy utilization rate of multi-energy system containing hydrogen storage device
CN212486131U (en) * 2020-05-28 2021-02-05 国网上海市电力公司 Comprehensive energy system based on hydrogen energy medium
CN111738502A (en) * 2020-06-15 2020-10-02 上海交通大学 Multi-energy complementary system demand response operation optimization method for promoting surplus wind power consumption
CN111639824A (en) * 2020-06-20 2020-09-08 东北电力大学 Thermoelectric optimization scheduling method for regional comprehensive energy system with electric-to-gas conversion function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113113922A (en) * 2021-04-08 2021-07-13 国网综合能源服务集团有限公司 Comprehensive energy supply system
CN113629881A (en) * 2021-07-23 2021-11-09 青海大学 Hydrogen energy storage system with heat balance maintaining capacity and optimization method
CN113644749A (en) * 2021-07-23 2021-11-12 青海大学 Heat-hydrogen double SOC hydrogen energy storage system and optimization method
CN113629881B (en) * 2021-07-23 2023-10-10 青海大学 Hydrogen energy storage system with heat balance maintaining capability and optimization method
CN113644749B (en) * 2021-07-23 2023-10-13 青海大学 Heat-hydrogen double-SOC hydrogen energy storage system and optimization method

Similar Documents

Publication Publication Date Title
CN111738502B (en) Multi-energy complementary system demand response operation optimization method for promoting surplus wind power consumption
CN108154309B (en) Energy internet economic dispatching method considering multi-load dynamic response of cold, heat and electricity
CN112491147A (en) Hydrogen energy storage comprehensive energy configuration system and method
CN109523052B (en) Virtual power plant optimal scheduling method considering demand response and carbon transaction
CN109523092B (en) Multi-energy complementary combined cooling, heating and power system and cooperative scheduling method thereof
CN109474025B (en) Optimized dispatching model of park level comprehensive energy system
CN113315242A (en) Virtual wind abandoning-hydrogen production combination for promoting wind abandoning consumption based on hydrogen energy economy
CN114243694A (en) Grid-connected micro-grid optimization configuration method considering ladder carbon transaction and demand response
CN105305472B (en) A kind of substation capacity optimization method based on multiple-energy-source collaboration energy supply
CN113098036A (en) Comprehensive energy system operation method based on hydrogen fuel cell
CN114336745A (en) Multi-energy complementary intelligent energy system based on source network charge storage and control method
CN112085263A (en) User side distributed energy system hybrid energy storage optimal configuration method and system
CN116911533A (en) Multi-microgrid energy sharing method for regional comprehensive energy system
CN109255487A (en) A kind of integrated energy system optimization method based on normalized matrix model
CN113313416A (en) Distribution network power resource optimal distribution method considering biogas power generation and new energy consumption mechanism
CN113381398A (en) Multi-energy complementary comprehensive energy supply system suitable for industrial park
CN115860406A (en) Energy scheduling method of park comprehensive energy system based on internal electricity price excitation
CN113627720B (en) Comprehensive park wind-solar storage system configuration method based on electric energy substitution
CN112465307A (en) Industrial park comprehensive energy configuration system and method
Zhang et al. Low-carbon economic dispatching of combined heat and power system considering electric-thermal integrated demand response
CN114331028B (en) Renewable energy network operation determining method and related device based on hydrogen energy
CN112310984A (en) New energy local consumption capacity evaluation method considering multiple consumption measures
CN218442489U (en) Energy management system
Yan et al. Optimal Scheduling of Integrated Energy System considering Hydrogen and Integrated Demand Response
CN117077368B (en) Comprehensive energy system crowd target planning method considering industrial comprehensive demand response

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210312

RJ01 Rejection of invention patent application after publication