CN113507138A - Mobile-based comprehensive energy system and scheduling method - Google Patents
Mobile-based comprehensive energy system and scheduling method Download PDFInfo
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- 239000000295 fuel oil Substances 0.000 claims abstract description 40
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- 239000002918 waste heat Substances 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 15
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- 239000000446 fuel Substances 0.000 claims description 10
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
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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
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of 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
- H02J2300/20—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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- 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 mobile integrated energy system comprises a position moving device, wherein the position moving device is provided with an integrated energy system, the integrated energy system comprises an energy supply system, a load supply system and a user load system, the energy supply system comprises an electric power supply system, a natural gas supply system, a fuel oil supply system and an energy storage system, the load supply system comprises an electric refrigerator system, an electric boiler system, an absorption refrigerator system, a waste heat collecting device and a natural gas boiler system, and the user load system comprises a user electric load, a user cold load and a user heat load. The invention can realize the mobile function of the comprehensive energy system, provides a scheduling method for optimizing energy utilization, can meet the supply and demand in different scenes, improves the utilization efficiency and economic and environmental benefits of comprehensive energy, and provides guarantee for the emergency situation of the mobile comprehensive energy system to a certain extent.
Description
The technical field is as follows:
the invention relates to the technical field of cooling, heating and power comprehensive energy, in particular to a mobile comprehensive energy system and a scheduling method.
Background art:
with the further development of social economy, the consumption of energy is also increasing, which leads to the continuous shortage of non-renewable energy sources such as fossil and the problem of environmental pollution is aggravated. In order to further realize the aim of continuously reducing double carbon, the scheme of realizing carbon emission reduction by the Chinese energy Internet is implemented, the construction and the operation of a comprehensive energy system are optimized, the continuous utilization of renewable energy is promoted, the further shortage condition of non-renewable energy can be relieved, and good environmental benefits can be achieved, so that the multi-aspect research on the comprehensive energy system gradually becomes a hotspot problem. The further improvement of the development of various new energy sources provides a precondition for the further development of a comprehensive energy system, in particular to the increasingly improved solar energy system. The comprehensive energy system can ensure the stable supply of energy required by a user by depending on the input of an external energy station, the conventional research on the energy flow of the comprehensive energy system is generally only limited to supply energy by a certain load alone, a combined supply energy distribution and dispatching method is still immature, and after the construction position of the comprehensive energy is fixed, the supply and the distribution of energy can be generally provided for nearby users only, and long-distance energy supply brings much inconvenience and increases the operation cost, so that the remote energy dispatching and the operation of the comprehensive energy system are not facilitated.
The importance of the energy optimization scheduling method of the comprehensive energy system is self-evident to users. For example, in the uk, a large-scale power failure occurred in 2019, and the power failure originated in the central east and northeast sea areas of england, which eventually caused power failure in most of england and wils. The reasons for this accident are: (1) due to the faults of the wind power system of the system and the shortage of the standby energy of the system, when the system connection is disturbed, the system cannot timely make up for the deficient power, so that the load of part of users is cut off; (2) the energy distribution and dispatching method is not timely, the guarantee service in the energy shortage can not be provided, and other comprehensive energy systems can not be timely distributed for supply. The enhancement is particularly important for optimizing the energy distribution scheduling method of the comprehensive energy system.
With the increasing development of the comprehensive energy, the environment which requires adaptation is more and more harsh, the comprehensive energy system can only determine the address by the inherent energy position generally, and cannot realize self independent energy supply, so that the regional limitation of the establishment of the comprehensive energy system is increased. The comprehensive energy system relates to numerous inherent energy enterprises, the challenge of building the comprehensive energy system in a short time to meet the energy supply requirements of enterprises and the like is huge, and building temporary comprehensive energy systems in multiple regions can generate huge economic cost, is not beneficial to certain economic benefit, and hinders the further development of the comprehensive energy system.
The invention content is as follows:
aiming at the problems, the invention provides a mobile-based comprehensive energy system and a scheduling method which are reliable in scheduling and can improve the utilization efficiency of comprehensive energy.
The technical scheme of the invention is as follows: comprises a position moving device, wherein the position moving device is provided with an integrated energy system,
the integrated energy system comprises an energy supply system, a load supply system and a user load system,
the energy supply system comprises an electric power supply system, a natural gas supply system, a fuel oil supply system and an energy storage system,
the power supply system is used for providing electric energy,
the natural gas supply system is used for providing natural gas to the power supply system,
the fuel supply system is used for supplying fuel to the electric power supply system,
the energy storage system is used for storing energy and providing electric energy and heat energy;
the user load system comprises a user electric load, a user cold load and a user heat load;
the user electric load provides electric energy through the electric power supply system and the energy storage system;
the load supply system comprises an electric refrigerator system, an electric boiler system, an absorption refrigerator system, a waste heat collecting device and a natural gas boiler system;
the electric refrigerator system is used for supplying energy to a user cold load by means of electric energy,
the electric boiler system is used for supplying energy to a user heat load through electric energy,
the absorption chiller system is used for energy supply of a user cooling load by thermal energy,
the natural gas boiler system is used for energy supply of a user heat load by natural gas,
the waste heat collecting device is used for collecting waste heat and providing heat energy.
The power supply system comprises a photovoltaic system, a gas unit and a fuel oil unit,
the photovoltaic system, the gas turbine set and the fuel oil turbine set are respectively used for providing electric energy;
the natural gas supply system comprises a natural gas first supply system and a natural gas second supply system,
the first supply system of natural gas is provided by a natural gas supply company,
the second natural gas supply system is provided by the product of the biogas generation device of the domestic waste of the personnel in the mobile comprehensive energy system;
the energy storage system comprises a heat storage system and an energy storage system,
the heat storage system is used for storing heat and providing heat energy, and the electricity storage system is used for storing electricity and providing electric energy.
The outside of the comprehensive energy system is provided with a power grid access port, a fuel oil access port, an external natural gas access port and an access port of a methane generating device,
the power grid access port is used for connecting an external power grid,
the fuel access port corresponds to a fuel supply system,
the external natural gas access port corresponds to a first natural gas supply system,
and the access port of the methane generating device corresponds to a second natural gas supply system.
The user electric load is preferentially supplied with energy by a photovoltaic system, and an electricity storage system, an oil-fired unit and a gas-fired unit are sequentially used as energy sources;
the user cold load is preferentially supplied with energy by the photovoltaic system, and the fuel oil unit and the electricity storage system are sequentially used as energy sources;
the user heat load is preferentially supplied with energy by the photovoltaic system, and the gas turbine set, the fuel oil turbine set and the energy storage system are sequentially used as energy sources.
The position moving device comprises a space body driven by a power assembly, wherein the power assembly is one or more of a roller and a propeller.
A scheduling method based on a mobile comprehensive energy system comprises the following steps:
1) acquiring real-time power of each part system in the comprehensive energy system at the time t, including the maximum power generation power P of the photovoltaic systemPV(t) user electrical load power PU,E(t) user heat load power PU,H(t) user cold load power PU,C(t) load power and electric refrigerator power P provided by the integrated energy systemP,C(t) electric boiler Power PP,H(t)，
Wherein the load power provided by the integrated energy system is the electric load power PG,E(t) Heat load Power PG,H(t) and the cooling load power PG,C(t) the sum of (t),
note PG(t) providing any one of load power to the integrated energy system,
PU(t) is any one of user load power;
2) if the supply power P of a certain type of load of the integrated energy systemG(t) less than the load power P required by the userU(t), further detection is carried out, otherwise, the step 3 is carried out;
the detection steps are as follows:
2.1) power P if consumer electric loadU,E(t) when the supply is insufficient, the supply is preferentially provided by the electricity storage system, and if the supply is still insufficient, the flow rate of fuel oil and fuel gas supply is increased, so that the power supply and demand of the electric load are balanced finally;
2.2) power P if user's cold loadU,C(t) if the supply is insufficient, the output power P of the electric refrigerator is increased preferentiallyP，C(t), when the power is still insufficient, the power of the absorption refrigerator is improved, and the heat storage system is used as a standby energy supply system to finally balance the supply and demand of the cold load power;
2.3) power P if user's heat loadU,H(t) if the supply is insufficient, the output power P of the electric boiler is preferentially increasedP,H(t), when the power is still insufficient, the power of the natural gas boiler and the waste heat collecting device is improved, and the heat storage system is used as a standby energy supply system to finally balance the heat load power supply and demand;
3) establishing a load rate matrix, and calculating the load rate matrix form of the comprehensive energy system at the time t as follows:
wherein, the elements in the load rate matrix are: eta1Is the electrical load factor, η2Is the rate of cold load, eta3As heat load rate, PratedE1(t) is the total power generation power of the fuel oil unit and the gas unit, PratedE2(t) is the refrigerating power of the absorption refrigerator, PratedE3(t) the output heat power of the natural gas boiler and the waste heat collecting device;
4) detecting and judging the load rate matrix in the step 3) in real time, and if the supply power P of a certain type of load of the energy system is integratedG(t) are all greater than user load power PU(t), the load rate matrix is smaller than the zero matrix, and the redundant energy is further stored by the energy storage system; when the energy storage system has no residual storage space, the next detection is carried out, and the detection steps are as follows:
4.1) if the elements of the load factor matrix are between 0 and p, wherein p is a constant between 20% and 50%, preferentially reducing the power generation power of the fuel oil unit and the gas unit at the same time, and reducing the power generation power of the photovoltaic system at the same time;
4.2) if the elements of the load factor matrix are all larger than q, wherein q is a constant between 90% and 100%, the operation of a gas unit and a fuel oil unit is closed, and the comprehensive energy system takes an electric power supply system as a main energy source and reduces the generated energy of a photovoltaic system;
4.3) when the load rate matrix does not belong to the steps 4.1) and 4.2), preferentially and uniformly reducing the input amount of the natural gas and the fuel oil, and finally enabling the generated power of the natural gas supply system, the fuel oil supply system and the power supply system to be equal to the power of a user;
5) and (4) finishing.
Compared with the prior art, the invention has the following advantages:
1) the energy distribution and scheduling method applied to the mobile comprehensive energy system further improves the utilization efficiency of comprehensive energy through real-time power detection, judgment and energy scheduling, has the advantage of environmental protection, and reduces the cost of system operation;
2) the mobile comprehensive energy system has the function of realizing geographical position movement, so that the application scene of the comprehensive energy system is wider, the environmental stability and the continuity of system operation are improved, and the emergency condition of the mobile comprehensive energy system is guaranteed to a certain extent.
Description of the drawings:
fig. 1 is a block diagram of a mobile-based integrated energy system according to the present invention;
FIG. 2 is a flow chart of a mobile integrated energy system based scheduling method of the present invention;
description of the drawings: 1: grid access port, 2: fuel access port, 3: external natural gas access port, 4: an inlet of a biogas generating device, 5: position moving device, 6: photovoltaic system, 7: fuel oil unit, 8: first supply system of natural gas, 9: second supply system of natural gas, 10: gas turbine unit, 11: power storage system, 12: electric refrigerator system, 13: an electric boiler system, 14: a waste heat collecting device, 15: a natural gas boiler system, 16: absorption chiller system, 17: heat storage system, 18: consumer electrical load, 19: user cooling load, 20: user thermal load, 21: a power wheel.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. 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.
As shown in fig. 1, the mobile-based integrated energy system provided by the present invention has mobility. The movement is performed by the position moving means 5. The space body in the mobile integrated energy system can include, but is not limited to, a mobile temporary house or a building including a motor home, a color steel house and a tent house, and the position moving device 5 can include, but is not limited to, a roller, a propeller and other power components, and can realize the movement of the mobile integrated energy system on the land, on the sea, in the air at different geographic positions and spaces.
As shown in fig. 1, the integrated energy system based on mobile integrated energy system provided by the present invention comprises an energy supply system, a load supply system and a user load system,
wherein the energy supply system comprises an electric power supply system, a natural gas supply system, a fuel oil supply system and an energy storage system,
the power supply system mainly comprises a photovoltaic system 6, a gas engine unit 10 and a fuel oil engine unit 7; the photovoltaic system 6 is used as a common energy supply source, and when a load exists in the system or the energy storage of the energy storage device is not full, the photovoltaic system 6 always works in a maximum power point tracking state or a load power point tracking state; the gas unit 10 and the fuel oil unit 7 adjust the energy supply priority according to the specific application based on the comprehensive energy system of the mobile comprehensive energy system.
The natural gas supply system comprises a first supply system 8 of natural gas and a second supply system 9 of natural gas,
the energy storage system comprises a heat storage system 17 and an electricity storage system 11, and is used as a standby energy based on the mobile comprehensive energy system for improving the energy supply stability of the system.
The load supply system comprises an electric refrigerator system 12, an electric boiler system 13, an absorption refrigerator system 16, a waste heat collecting device 14 and a natural gas boiler system 15;
wherein, the electric refrigerator system 12 is used for realizing the energy supply of the electric energy to the user cold load 19; the electric boiler system 13 is used for realizing energy supply of electric energy to the user heat load 20; the absorption chiller system 16 is used to effect the energy supply of thermal energy to the user's cold load 19; the waste heat collecting device 14 is used for collecting and utilizing waste heat in energy supply, so that the operation efficiency and the economic benefit of the system are improved; the natural gas boiler system 15 is used to effect the supply of natural gas to the user heat load 20.
The consumer load system includes a consumer electrical load 18, a consumer cold load 19, and a consumer thermal load 20.
When the external supply energy of the mobile comprehensive energy system is normal, renewable energy consumption is preferred, the system is mainly supplied by a photovoltaic system and a power grid, and the external supply energy is supplied by a gas and fuel oil unit in an auxiliary manner when the energy supply is insufficient.
The scheduling method based on the mobile comprehensive energy system comprises the following steps:
1) acquiring real-time power of each part system in the mobile comprehensive energy system at the time t, wherein the real-time power includes but is not limited to the maximum power generation power P of the photovoltaic systemPV(t) user electrical load power PU,E(t) user heat load power PU,H(t) user cold load power PU,C(t) electric refrigerator Power PP,C(t) electric boiler Power PP,H(t) and the load power provided by the integrated energy system;
wherein the load power provided by the integrated energy system is the electric load power PG,E(t) Heat load Power PG,H(t) and the cooling load power PG,C(t) the sum of (t),
note PG(t) providing any one of load power to the integrated energy system,
PU(t) is any one of user load power;
2) if the supply power P of a certain type of load of the integrated energy systemG(t) less than the load power P required by the userU(t), performing further detection, otherwise, turning to the step 3), wherein the detection steps are as follows:
2.1) power P if consumer electric loadU,E(t) when the supply is insufficient, the supply is preferentially provided by the electricity storage system, and if the supply is still insufficient, the flow rate of fuel oil and fuel gas supply is increased, so that the power supply and demand of the electric load are balanced finally;
2.2) power P if user's cold loadU,C(t) in the case of insufficient supplyThe output power P of the electric refrigerator is preferentially increasedP，C(t), when the power is still insufficient, the power of the absorption refrigerator is improved, and the heat storage system is used as a standby energy supply system to finally balance the supply and demand of the cold load power;
2.3) power P if user's heat loadU,H(t) if the supply is insufficient, the output power P of the electric boiler is preferentially increasedP,H(t), when the power is still insufficient, the power of the natural gas boiler and the waste heat collecting device is improved, and the heat storage system is used as a standby energy supply system to finally balance the heat load power supply and demand;
3) establishing a load rate matrix, and calculating the load rate matrix form of the comprehensive energy system at the time t as follows:
wherein, the elements in the load rate matrix are: eta1Is the electrical load factor, η2Is the rate of cold load, eta3As heat load rate, PratedE1(t)Is the total power generation power P of the fuel oil unit and the gas unitratedE2(t)Is the refrigerating power of the absorption refrigerator, PratedE3(t)The output heat power of the natural gas boiler and the waste heat collecting device;
in practice, the load factor matrix defines the calculation method including, but not limited to, the electric load factor, the heat load factor, and the cold load factor.
4) Detecting and judging the load rate matrix in the step 3) in real time, if the supply power P of a certain type of load of the comprehensive energy systemG(t) are all greater than user load power PU(t), the load rate matrix is smaller than a zero matrix, and redundant energy is further stored by the energy storage system; for the definition of matrix size, if any m rows and n columns matrix a ═ a (a)i,j)(0<i≤m,0<j ≦ n) is greater than m rows and n columns (B ≦ n)i,j)(0<i≤m,0<j is less than or equal to n), then is marked as matrix A>B, otherwise, the matrix A is less than or equal to B; in the invention, the load rate matrix is compared with the zero matrix;
when the energy storage system has no residual storage space, the next detection is carried out, and the detection steps are as follows:
4.1) if the elements of the load factor matrix are all between 0 and p (wherein p is a constant between 20% and 50%, and is determined according to the actual application scene), preferentially and simultaneously reducing the power generation power of the fuel oil unit and the gas unit, and simultaneously reducing the power generation power of the photovoltaic system;
4.2) if the elements of the load factor matrix are larger than q (wherein q is a constant between 90% and 100%, and is determined according to the actual application scene), closing the operation of the gas turbine set and the oil turbine set, taking the power supply system as a main energy source of the comprehensive energy system, and reducing the power generation amount of the photovoltaic system;
4.3) when the load rate matrix does not belong to the steps 4.1) and 4.2), preferentially and uniformly reducing the input amount of the natural gas and the fuel oil, and finally enabling the generated power of the natural gas supply system, the fuel oil supply system and the power supply system to be equal to the power of a user;
5) completing the process; and performing the steps, switching the working modes of the systems in real time according to the joint scheduling control among the systems, and using the working modes as an energy distribution scheduling method based on the mobile comprehensive energy system at the moment.
In the work of the invention, the energy of the electric load, the cold load and the heat load of the mobile comprehensive energy system is distributed and scheduled, and the main steps are as follows: (1) acquiring real-time power data of an electric load, a heat load, a cold load, an electric power supply system, a natural gas supply system, a fuel oil supply system and an energy storage system of the comprehensive energy system; (2) the method mainly comprises the steps of judging the relation between the supply power of certain types of loads (including electric loads, cold loads and heat loads) of the comprehensive energy system and the load power required by a user, giving a corresponding energy distribution scheduling method, and adjusting the operation condition of the system.
The mobile comprehensive energy system can realize the mobile function of the comprehensive energy system, meet the supply and demand under different scenes, realize the transient separation of the mobile comprehensive energy system from a power grid and an energy station, fully excavate the energy scheduling potential of the mobile comprehensive energy system, improve the utilization efficiency and economic and environmental benefits of comprehensive energy, improve the environmental stability and persistence of system operation, and provide guarantee for the emergency situation of the mobile comprehensive energy system to a certain extent.
The systems and devices related to the invention are conventional equipment except the position moving device, and are convenient to use.
In the specific application:
as shown in fig. 1, the mobile-based integrated energy system is applied to a mobile temporary dwelling, which has a modular form and is connected through gas and fuel pipelines, data transmission lines, power cables, etc., and the position moving device 5 is preferably a moving device of the mobile temporary dwelling, so that not only the energy supply of the mobile temporary dwelling under normal conditions can be ensured, but also the energy supply can be provided when the temporary dwelling is in a failure stage. The power assembly shown in fig. 1 is a power wheel 21, and is driven by a motor, and the motor can be fixed on a support through being matched with a fixed bottom shell of a comprehensive energy system such as a motor home, a yacht and other movable color steel houses, and can adopt motors with inner and outer stators, and the motors are also fixed on the support, so that the comprehensive energy system has mobility.
In addition, as shown in fig. 1, the mobile-based integrated energy system provided by the invention provides four external interfaces for obtaining external energy, and the external interfaces comprise a power grid access port 1, a fuel oil access port 2, an external natural gas access port 3 and an access port 4 of a biogas generating device. When the mobile-based integrated energy system provided by the invention is based on a specific application scene, one or more of the four external energy supply interfaces can be selected for external energy acquisition.
When the power supply of the temporary residential power grid is normal: at this time, the main energy supply sources of the temporary house are a photovoltaic system and a power grid. When the system detects that the real-time photovoltaic power generation power is larger than the load power, if the power storage device is not full, the photovoltaic power generation system works in a maximum power point tracking state, and redundant photovoltaic power generation power is used for storing energy of the power storage device; if the power storage device is fully charged at the moment, the photovoltaic power generation device works in a load power point tracking state. When the system detects that the real-time photovoltaic power generation power is smaller than the load power, the photovoltaic power generation system works in a maximum power point tracking state, and insufficient power is supplied by the main power grid.
When the supply of the temporary residential power grid is abnormal: the invention provides a scheduling method based on a mobile comprehensive energy system, which mainly comprises the following steps of:
the method comprises the following steps: as shown in fig. 1, a comprehensive energy system based on a movable temporary house, which is composed of an energy supply system, a load supply system and a user load system, is constructed, and power parameter data of each part of the system at time t is acquired;
step two: performing equivalent modeling on the power parameters acquired in the step one through an interface, determining interactive variables of the interface, performing transmission summarizing processing, and performing judgment of the next step;
step three: if the supply power P of any load of the integrated energy system is obtainedG(t) (i.e., any one of the integrated energy system-supplied loads) is less than the power P of the load required by the userU(t) (namely any one of the load power of the user), judging the shortage conditions of the electric load, the cold load and the heat load power one by one, and turning to the seventh step, otherwise, storing the redundant electric energy by the energy storage system, and continuing to execute the next step when the capacity of the energy storage system is full;
step four: and calculating in real time according to the load rate matrix and judging one by one. And if the load rate matrix elements are between 0 and 40 percent (p is properly selected to be 40 percent according to the supply and demand requirements of the system), continuing to execute, otherwise, turning to the step five.
When the load power provided by the photovoltaic system is in a saturated state, the power generation power of the fuel oil unit and the power generation power of the gas unit are preferentially reduced at the same time, and the power generation power of the photovoltaic system is reduced at the same time, so that the real-time power supply and the real-time power demand of the mobile temporary house are balanced;
step five: and when the load rate matrix elements are all larger than 100% (q is 100% according to the supply and demand requirements of the system), continuing to execute, otherwise, turning to the step six. The load power provided by the photovoltaic system is in an oversaturated state, the gas unit and the fuel oil unit are shut down, the comprehensive energy system takes the power supply system as a main energy source, the generated energy of the photovoltaic system is reduced, and finally the real-time power supply and demand balance of the mobile temporary house is realized;
step six: when the load rate matrix element does not meet the conditions in the fourth step and the fifth step, the input quantity of natural gas and fuel oil is preferentially and uniformly reduced, the power generation power of a photovoltaic system is reduced, and finally the real-time power supply and the demand of the mobile temporary house are balanced;
step seven: judging if the electrical load power PU,E(t) supplying insufficient fuel gas, preferably supplied by the electricity storage system, and increasing the flow rate of fuel oil and fuel gas supply if the supply is still insufficient; otherwise, turning to the step eight;
step eight: judging the cold load power P of the userU,C(t) a shortage of supply, priority being given to increasing the power P of the electric refrigeratorP，C(t), if the power is still insufficient, the power of the absorption refrigerator is increased, and the heat storage system is used as a standby energy supply system; otherwise, turning to the ninth step;
step nine: determining user thermal load power PU,H(t) starving, preferentially increasing the power P of the electric boilerP,H(t), when the power is still insufficient, the power of the natural gas boiler and the waste heat collecting device is improved, and the heat storage system is used as a standby energy supply system; otherwise, turning to the step four;
step ten: and determining the operation modes of the energy supply system and the load supply system according to the steps, and circulating the steps to determine the energy distribution scheduling method of the next time period.
The foregoing detailed description of the preferred embodiments of the invention has been presented. Many modifications and variations will be apparent to those of ordinary skill in the art in light of the above teachings without undue experimentation. Therefore, equivalent implementations or modifications without departing from the invention should be considered within the scope of the claims of this application.
Claims (6)
1. A mobile-based integrated energy system is characterized by comprising a position moving device, wherein the position moving device is provided with an integrated energy system,
the integrated energy system comprises an energy supply system, a load supply system and a user load system,
the energy supply system comprises an electric power supply system, a natural gas supply system, a fuel oil supply system and an energy storage system,
the power supply system is used for providing electric energy,
the natural gas supply system is used for providing natural gas to the power supply system,
the fuel supply system is used for supplying fuel to the electric power supply system,
the energy storage system is used for storing energy and providing electric energy and heat energy;
the user load system comprises a user electric load, a user cold load and a user heat load;
the user electric load provides electric energy through the electric power supply system and the energy storage system;
the load supply system comprises an electric refrigerator system, an electric boiler system, an absorption refrigerator system, a waste heat collecting device and a natural gas boiler system;
the electric refrigerator system is used for supplying energy to a user cold load by means of electric energy,
the electric boiler system is used for supplying energy to a user heat load through electric energy,
the absorption chiller system is used for energy supply of a user cooling load by thermal energy,
the natural gas boiler system is used for energy supply of a user heat load by natural gas,
the waste heat collecting device is used for collecting waste heat and providing heat energy.
2. The mobile integrated energy-based system according to claim 1, wherein the power supply system comprises a photovoltaic system, a gas-fired unit and an oil-fired unit,
the photovoltaic system, the gas turbine set and the fuel oil turbine set are respectively used for providing electric energy;
the natural gas supply system comprises a natural gas first supply system and a natural gas second supply system,
the first supply system of natural gas is provided by a natural gas supply company,
the second natural gas supply system is provided by the product of the biogas generation device of the domestic waste of the personnel in the mobile comprehensive energy system;
the energy storage system comprises a heat storage system and an energy storage system,
the heat storage system is used for storing heat and providing heat energy, and the electricity storage system is used for storing electricity and providing electric energy.
3. The mobile-based integrated energy system of claim 2, wherein the integrated energy system is provided with an electric network access port, a fuel oil access port, an external natural gas access port and a methane gas generation device access port,
the power grid access port is used for connecting an external power grid,
the fuel access port corresponds to a fuel supply system,
the external natural gas access port corresponds to a first natural gas supply system,
and the access port of the methane generating device corresponds to a second natural gas supply system.
4. The mobile integrated energy-based system according to claim 2, wherein the user electrical load is preferentially supplied by a photovoltaic system, and an electricity storage system, an oil-fired unit and a gas-fired unit are sequentially used as energy sources;
the user cold load is preferentially supplied with energy by the photovoltaic system, and the fuel oil unit and the electricity storage system are sequentially used as energy sources;
the user heat load is preferentially supplied with energy by the photovoltaic system, and the gas turbine set, the fuel oil turbine set and the energy storage system are sequentially used as energy sources.
5. The mobile integrated energy based system according to claim 1, wherein the position moving means comprises a space body driven by a power assembly, the power assembly being one or more of a roller and a propeller.
6. A mobile integrated energy system based dispatch method according to any one of claims 1 to 5, comprising the steps of:
1) acquiring real-time power of each part system in the comprehensive energy system at the time t, including the maximum power generation power P of the photovoltaic systemPV(t) user electrical load power PU,E(t) user heat load power PU,H(t) user cold load power PU,C(t) load power and electric refrigerator power P provided by the integrated energy systemP,C(t) electric boiler Power PP,H(t)，
Wherein the load power provided by the integrated energy system is the electric load power PG,E(t) Heat load Power PG,H(t) and the cooling load power PG,C(t) the sum of (t),
note PG(t) providing any one of load power to the integrated energy system,
PU(t) is any one of user load power;
2) if the supply power P of a certain type of load of the integrated energy systemG(t) less than the load power P required by the userU(t), further detection is carried out, otherwise, the step 3 is carried out;
the detection steps are as follows:
2.1) power P if consumer electric loadU,E(t) when the supply is insufficient, the supply is preferentially provided by the electricity storage system, and if the supply is still insufficient, the flow rate of fuel oil and fuel gas supply is increased, so that the power supply and demand of the electric load are balanced finally;
2.2) power P if user's cold loadU,C(t) if the supply is insufficient, the output power P of the electric refrigerator is increased preferentiallyP，C(t), if the temperature is still insufficient, the power of the absorption refrigerator is increased, the heat storage system is used as a standby energy supply system, and finally the cold load is reducedThe load power supply and demand are balanced;
2.3) power P if user's heat loadU,H(t) if the supply is insufficient, the output power P of the electric boiler is preferentially increasedP,H(t), when the power is still insufficient, the power of the natural gas boiler and the waste heat collecting device is improved, and the heat storage system is used as a standby energy supply system to finally balance the heat load power supply and demand;
3) establishing a load rate matrix, and calculating the load rate matrix form of the comprehensive energy system at the time t as follows:
wherein, the elements in the load rate matrix are: eta1Is the electrical load factor, η2Is the rate of cold load, eta3As heat load rate, PratedE1(t) is the total power generation power of the fuel oil unit and the gas unit, PratedE2(t) is the refrigerating power of the absorption refrigerator, PratedE3(t) the output heat power of the natural gas boiler and the waste heat collecting device;
4) detecting and judging the load rate matrix in the step 3) in real time, and if the supply power P of a certain type of load of the energy system is integratedG(t) are all greater than user load power PU(t), the load rate matrix is smaller than the zero matrix, and the redundant energy is further stored by the energy storage system; when the energy storage system has no residual storage space, the next detection is carried out, and the detection steps are as follows:
4.1) if the elements of the load factor matrix are between 0 and p, wherein p is a constant between 20% and 50%, preferentially reducing the power generation power of the fuel oil unit and the gas unit at the same time, and reducing the power generation power of the photovoltaic system at the same time;
4.2) if the elements of the load factor matrix are all larger than q, wherein q is a constant between 90% and 100%, the operation of a gas unit and a fuel oil unit is closed, and the comprehensive energy system takes an electric power supply system as a main energy source and reduces the generated energy of a photovoltaic system;
4.3) when the load rate matrix does not belong to the steps 4.1) and 4.2), preferentially and uniformly reducing the input amount of the natural gas and the fuel oil, and finally enabling the generated power of the natural gas supply system, the fuel oil supply system and the power supply system to be equal to the power of a user;
5) and (4) finishing.
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