CN119154422B - An intelligent multi-source input new energy control system based on 240V DC architecture - Google Patents
An intelligent multi-source input new energy control system based on 240V DC architecture Download PDFInfo
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- 238000004146 energy storage Methods 0.000 claims abstract description 45
- 238000010248 power generation Methods 0.000 claims abstract description 38
- 239000000446 fuel Substances 0.000 claims abstract description 12
- 230000007613 environmental effect Effects 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 56
- 239000007788 liquid Substances 0.000 claims description 53
- 239000000110 cooling liquid Substances 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000011157 data evaluation Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 3
- 230000032683 aging Effects 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as AC or DC
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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
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/10—Parallel operation of DC sources
- H02J1/12—Parallel operation of DC generators with converters, e.g. with mercury-arc rectifier
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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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
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
-
- 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
- H02J2300/30—The power source being a fuel cell
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an intelligent multi-source input new energy control system based on a 240V direct current framework, which relates to the technical field of power generation and energy storage and comprises a power generation module, a 240V direct current bus, an energy storage module, a load module and an intelligent energy management and control module, wherein the power generation module comprises a photovoltaic power generation module, a wind power generation module, a fuel cell module, a mains supply module and an oil engine module. According to the invention, the environment information is monitored, the power parameters are combined, the system is predicted, the prediction result is used for judging the regulation and control of the system to each new energy device at the next stage according to the prediction result, the current power supply system is in a pre-action state, the occurrence of large impact caused by the bad state is prevented, meanwhile, the service life of the prediction device or device is shortened according to the change of each parameter, in addition, the battery module of the energy storage module is high in stability, the battery aging caused by the environmental influence is avoided, and the service life of the battery module is prolonged.
Description
Technical Field
The invention relates to the technical field of power generation and energy storage, in particular to an intelligent multi-source input new energy control system based on a 240V direct current architecture.
Background
In recent years, multi-source input power generation systems have received attention because of their ability to integrate a variety of renewable energy sources. Such systems typically incorporate solar, wind, and other forms of renewable energy sources to increase power generation efficiency and reliability. However, conventional multi-source input power generation systems still have problems such as low energy conversion efficiency, high system complexity, and high failure rate.
Conventional multi-source input power generation systems often require multiple power conversion units to accommodate different types of input energy sources, which typically involve multiple power conversion processes. For example, the output of a solar cell needs to be regulated by a DC/DC converter, and wind energy needs to be converted into alternating current by a DC/AC inverter. Such multi-stage conversion not only increases energy losses, but also makes the system design more complex and difficult to maintain.
In addition, existing systems often lack intelligent management means and cannot dynamically adjust energy distribution according to environmental condition changes and load demands. When an abrupt load or fault is encountered, the system may not respond in time, resulting in equipment damage or downtime. In addition, data acquisition and state monitoring of the traditional multi-source system are mostly in a passive state, and lack of a real-time prediction function, so that service life management of equipment is affected, and maintenance cost and instability of the system are increased.
In order to solve the above problems, a new system capable of improving the conversion efficiency of a multi-source input power generation system, reducing energy loss, and realizing intelligent dynamic management is urgently needed. The system should have high-efficiency power conversion technology, and combine intelligent data analysis and state prediction to realize adaptive energy allocation and equipment life extension.
Disclosure of Invention
The invention aims to provide an intelligent multi-source input new energy control system based on a 240V direct current architecture, so as to solve the problems in the background technology.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
The invention provides an intelligent multi-source input new energy control system based on a 240V direct current framework, which comprises a power generation module, a 240V direct current bus, an energy storage module, a load module and an energy intelligent management and control module, wherein the power generation module is connected with the energy storage module;
The power generation module comprises a photovoltaic power generation module, a wind power generation module, a fuel cell module, a commercial power module and an oil engine module, wherein the energy storage module is used for storing electric energy when the required electric quantity is smaller than the generated energy and outputting electric energy when the required electric quantity is higher than the generated energy, the load module is used for providing a load for a circuit to simulate an actual use scene and change in real time according to the electric power requirement of a user, and the intelligent energy management and control module is used for realizing dynamic optimization of multi-source electric power input by collecting, monitoring, evaluating, predicting, scheduling and controlling electric power data.
Further, the 240V direct current bus directly supplies power to the load module.
The photovoltaic power generation module and the fuel cell module are connected with the direct current bus after rectification change of the DC/DC module and are supplied to the energy storage module and the load module, and the wind power generation module and the fuel cell module are connected with the direct current bus after conversion of the bidirectional AC/DC into 240V direct current and are supplied to the energy storage module and the load module.
Further, the energy intelligent management and control module comprises a data receiving sub-module, an impact parameter prediction sub-module, a data evaluation prediction module sub-module and an electric power control sub-module.
Further, the data receiving unit is configured to receive an environmental data set and power data information;
the impact parameter prediction sub-module is used for calculating the influence of various parameters in the environment data set on the power data information by combining the environment data set and the power data information to obtain impact parameters;
The data evaluation prediction module submodule is used for processing the environment data set and the power data information acquired by the data receiving unit to obtain power allocation control parameters;
the power controller includes:
The module tide calculation unit is used for calculating the power grid structure and the generator operation condition, and determining steady-state operation state parameters of each part of the power system so as to obtain steady current parameters;
the energy distribution module unit is used for carrying out power distribution on the system power grid according to the stable current parameter and the intelligent allocation parameter to obtain an optimal energy distribution parameter;
The protection control module is used for acquiring protection control parameters according to the optimal energy distribution parameter set and the power data information set;
and the stability control unit is used for acquiring stability control parameters according to the optimal energy distribution parameter set and the power data information set, and outputting the stability current parameters, the optimal energy distribution parameters, the protection control parameters and the stability control parameters as an optimal power control scheme.
The energy storage module comprises a battery energy storage unit and a battery management system, wherein the battery management system is used for monitoring and controlling the charge and discharge of a battery;
The battery energy storage unit comprises a plurality of battery modules, wherein each battery module comprises a temperature control battery bin and a battery arranged in each temperature control battery bin, and each temperature control battery bin comprises a rectangular frame and liquid cooling plate components fixedly assembled on two sides of the rectangular frame;
The liquid cooling plate component comprises a positioning plate and a movable liquid cooling plate, wherein the positioning plate is uniformly provided with strip-shaped through grooves in a penetrating manner along the length direction, the cross sections of the strip-shaped through grooves from one side of a battery to the other side of the battery continuously decrease to form a conical structure, one side, close to the battery, of the positioning plate between adjacent strip-shaped through grooves is uniformly provided with a supporting prismatic table, and one side, far away from the positioning plate, of the supporting prismatic table on the positioning plate is provided with a first abutting surface in contact with the battery;
the movable liquid cooling plate comprises strip-shaped parts which are adapted to the strip-shaped through grooves and connecting parts which are uniformly arranged between the adjacent strip-shaped parts, a conical through hole is formed between the adjacent two connecting parts in the adjacent two strip-shaped parts, the movable liquid cooling plate is positioned at one side of the positioning plate, which is close to the battery, and a flat second abutting surface is formed at one side of the movable liquid cooling plate, which is close to the battery;
when the movable liquid cooling plate is in the first position, the outer side wall of the strip-shaped part of the movable liquid cooling plate is attached to the inner wall of the strip-shaped through groove, the inner wall of the conical through hole is attached to the outer wall of the corresponding supporting prismatic table, the second abutting surface is positioned on one side, far away from the battery, of the first abutting surface, and when the movable liquid cooling plate is in the second position, the second abutting surface is flush with the first abutting surface.
Further, the four corner positions of one side of the locating plate far away from the battery are all fixed with the fixed columns, and a cooling liquid inlet pipe and a cooling liquid outlet pipe are respectively fixed between the two fixed columns at two ends of the locating plate, the cooling liquid inlet pipe and the cooling liquid outlet pipe are respectively positioned at the strip-shaped through grooves at two ends of the locating plate, and the cooling liquid inlet pipe and the cooling liquid outlet pipe are connected with the movable liquid cooling plate through telescopic connecting pipes, and the movable liquid cooling plate, the cooling liquid inlet pipe and the cooling liquid outlet pipe are uniformly provided with pre-tightening springs.
Further, the second abutting surface is uniformly provided with air flow grooves.
Compared with the prior art, the above technical scheme has the following beneficial effects:
1. The invention improves the energy efficiency of the system, directly improves the DC power to 240V DC power through single-stage DC/DC conversion, and obviously reduces the energy loss in the electric energy conversion process.
2. The invention has low failure rate, simplifies the system architecture, reduces the complexity and effectively reduces the failure risk caused by power conversion.
3. According to the invention, the environment information is monitored, the power parameters are combined, the system is predicted, the prediction result is used for judging the regulation and control of the system on each new energy device in the next stage according to the prediction result, the current power supply system is in a pre-action state, the occurrence of large impact caused by the bad state is prevented, and meanwhile, the service life of the prediction device or the device is shortened according to the change of each parameter.
4. The battery module of the energy storage module has high stability, prevents battery aging caused by environmental influence, and prolongs the service life of the battery module.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a schematic diagram of an intelligent multi-source input new energy control system with 240V DC architecture according to the present invention;
FIG. 2 is a schematic diagram of the energy intelligent control module structure of the present invention;
FIG. 3 is a schematic view of a first state structure of a temperature-controlled battery compartment of the present invention;
FIG. 4 is a schematic view of a second state structure of the temperature-controlled battery compartment of the present invention;
FIG. 5 is a schematic view showing a first state structure of a liquid cooling plate member according to the present invention;
FIG. 6 is a schematic view showing a structure of a second state of the liquid cooling plate member of the present invention;
FIG. 7 is a schematic view of a positioning plate structure of the present invention;
FIG. 8 is a schematic diagram of a mobile liquid cooling structure according to the present invention;
FIG. 9 is a schematic cross-sectional structural view of a first state of the temperature controlled battery compartment of the present invention;
FIG. 10 is a schematic view of the partial structure at A of FIG. 9;
FIG. 11 is a schematic cross-sectional structural view of a second state of the temperature controlled battery compartment of the present invention;
fig. 12 is a partial structural schematic diagram at B of fig. 10.
In the figure:
1-a temperature control battery bin, 2-a rectangular frame, 21-an opening, 22-a sealing plate, 3-a liquid cooling plate component, 31-a positioning plate, 311-a strip-shaped through groove, 312-a supporting prismatic table, 313-a first abutting surface, 32-a movable liquid cooling plate, 321-a strip-shaped part, 322-a connecting part, 323-a conical through hole, 324-a second abutting surface, 4-a fixed column, 5-a cooling liquid inlet pipe, 6-a cooling liquid outlet pipe, 7-a pre-tightening spring and 8-a telescopic connecting pipe.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
Referring to fig. 1-12, the invention provides an intelligent multi-source input new energy control system based on a 240V direct current architecture, which comprises a power generation module, a 240V direct current bus, an energy storage module, a load module and an intelligent energy management and control module, wherein the novel energy power generation module comprises hydroelectric power generation, geothermal power generation and the like.
The power generation module comprises a photovoltaic power generation module, a wind power generation module, a fuel cell module, a commercial power module and an oil engine module, wherein the energy storage module is used for storing electric energy when the required electric quantity is smaller than the generated energy and outputting the electric energy when the required electric quantity is higher than the generated energy, the load module is used for providing a load for a circuit to simulate an actual use scene and change in real time according to the electric power requirement of a user, the energy intelligent management and control module is used for monitoring a system circuit and monitoring the environment to obtain electric power allocation control parameters, calculating and regulating the circuit through the system and obtaining and adaptively regulating the system circuit according to the actual system circuit condition and the environment.
The photovoltaic power generation module comprises a photovoltaic array and a first DC/DC conversion module, and the photovoltaic array is connected with the 240V direct current bus access unit after being rectified by the first DC/DC conversion module.
Further, a Maximum Power Point Tracking (MPPT) control unit is built in the first DC/DC conversion module, so that the maximum power output of the photovoltaic power generation system can be realized under different illumination intensities and environmental temperatures, and the power generation efficiency is optimized.
The fuel cell module comprises a fuel cell and a second DC/DC module, and the fuel cell is connected with the 240V direct current bus access unit after being rectified by the second DC/DC module.
The wind power generation module comprises a fan group, a 0.96kV/10kV fan group step-up transformer and a local energy storage unit, and all the components are sequentially connected and connected with a 10kV alternating current bus access unit.
The local energy storage unit comprises an impact resistance energy storage device such as a compressed air energy storage device, a flywheel energy storage device and the like. When the power generated by the fan set is higher than the load power, one part of generated electric energy supplies power to the 10kV alternating current bus, the other part of generated electric energy charges energy to the local energy storage unit, and when the power supplied by the fan set is lower than the load power, the local energy storage unit is used as a supplementary power supply to supply power to the load at the same time.
The oil engine module comprises a high-voltage 10kV oil engine or a low-voltage 0.4kV oil engine, wherein the high-voltage oil engine is connected with a 10kV alternating current bus input unit, and the low-voltage oil engine is connected with the 0.4kV alternating current bus input unit.
The energy storage module comprises an energy storage battery pack 1 and an energy storage battery pack 2. The energy storage module monitors and controls the energy storage state through a Battery Management System (BMS). The energy storage battery pack adopts a high-efficiency lithium battery pack, and realizes charge and discharge management through a bidirectional DC/DC module.
When the load demand is low or the photovoltaic power generation is excessive, the energy storage module can store excessive electric energy, and when the load demand is increased or the power generation is insufficient, the electric energy is supplemented through a 240V direct current bus. The energy storage module has the rapid response capability and the energy allocation function, and is connected with the energy intelligent management and control module through the power electronic converter to ensure the system load stability.
The load module comprises an existing AC/DC load and a newly added load. Specifically, the load module includes a 48V dc load, a 220V ac load, and a newly added 240V device load.
The intelligent energy management and control module comprises a core management unit of the whole system, and further comprises a data receiving sub-module, an impact parameter prediction sub-module, a data evaluation prediction module sub-module and an electric power control sub-module.
Further, the data receiving sub-module is used for receiving the environment data set and the power data information;
the impact parameter prediction sub-module is used for calculating the influence of various parameters in the environment data set on the power data information by combining the environment data set and the power data information to obtain impact parameters;
The data evaluation prediction module submodule is used for processing the environment data set and the power data information acquired by the data receiving unit to obtain power allocation control parameters;
the power control submodule includes:
The module tide calculation unit is used for calculating the power grid structure and the generator operation condition, and determining steady-state operation state parameters of each part of the power system so as to obtain steady current parameters;
the energy distribution module unit is used for carrying out power distribution on the system power grid according to the stable current parameter and the intelligent allocation parameter to obtain an optimal energy distribution parameter;
The protection control module is used for acquiring protection control parameters according to the optimal energy distribution parameter set and the power data information set;
and the stability control unit is used for acquiring stability control parameters according to the optimal energy distribution parameter set and the power data information set, and outputting the stability current parameters, the optimal energy distribution parameters, the protection control parameters and the stability control parameters as an optimal power control scheme.
The intelligent energy management and control module enables the system to have multiple operation modes so as to adapt to different load demands and environmental conditions:
And in an independent power supply mode, under the condition of disconnecting the commercial power, the system realizes independent power supply to the load through the photovoltaic, wind power and energy storage module, and can continuously operate in an environment without the commercial power. And in the grid-connected operation mode, when the commercial power is connected, the system automatically adjusts the power supply proportion of different power supplies according to the real-time load demand, and the redundant electric energy is fed back to the power grid through a grid-connected interface. When the photovoltaic and wind power generation capacity is high, the mode can input redundant power into the power grid so as to realize effective utilization of energy.
And in the intelligent switching mode, when the photovoltaic and wind power cannot meet the load demand, the system is automatically switched to an energy storage module or a fuel cell module to supply power, so that the stable operation of the key load is ensured. The switching process in the mode is controlled by the energy intelligent control module, and seamless switching is performed by automatically judging the power input condition, so that power supply interruption is avoided.
It is noted that in order to improve the reliability of the present system, the energy storage module adopts a redundant design. The energy storage module is provided with a plurality of battery modules, when one group of battery modules fails, the system is automatically switched to other battery packs, and continuous power supply of the system is ensured.
Further, in order to improve the operation reliability of the energy storage module, the normal operation of the energy storage module is prevented from being influenced by the interference of the external environment. As shown in fig. 1-12, the battery module comprises a temperature-controlled battery compartment 1 and a battery (not shown) arranged in the temperature-controlled battery compartment 1, the temperature-controlled battery compartment 1 comprises a rectangular frame 2 and liquid cooling plate members 3 fixedly assembled on two sides of the rectangular frame, an opening 21 is formed in one side of the rectangular frame 2, and a sealing plate 22 is detachably arranged at the opening 21.
The temperature control battery bin 1 can be internally provided with a plurality of batteries connected in series, the temperature control battery bin 1 and the plurality of batteries connected in series inside the temperature control battery bin can form a battery pack, and in the battery charging and discharging process, the liquid cooling plate component 3 is tightly attached to two sides of the battery to cool the battery in a heat transfer mode, so that the over-high temperature of the battery is prevented, and the normal operation of the energy storage module is influenced.
As shown in fig. 5 and 6, the liquid cooling plate member 3 comprises a positioning plate 31 and a movable liquid cooling plate 32, as shown in fig. 7, the positioning plate 31 is uniformly provided with strip-shaped through grooves 311 along the length direction, the cross sections of the strip-shaped through grooves 311 from one side to the other side of the battery continuously decrease to form a cone-shaped structure, one side, close to the battery, of the positioning plate 31 between adjacent strip-shaped through grooves 311 is uniformly provided with a supporting rib table 312, and one side, far away from the positioning plate 31, of the supporting rib table 312 on the positioning plate 31 is provided with a first abutting surface 313 in contact with the battery;
as shown in fig. 5and 8, the movable liquid cooling plate 32 includes a strip portion 321 adapted to the strip through slot 311 and a connection portion 322 uniformly disposed between adjacent strip portions 321, wherein in two adjacent strip portions 321, a tapered through hole 323 is formed between two adjacent connection portions 322, the movable liquid cooling plate 32 is located at one side of the positioning plate 31 near the battery, and one side of the movable liquid cooling plate 32 near the battery forms a flat second abutting surface 324;
As shown in fig. 5 and 6, the movable liquid cooling plate 32 can slide between a first position and a second position along a direction perpendicular to the positioning plate 31 under the driving of the driving component, when the movable liquid cooling plate 32 is in the first position, the outer side wall of the strip portion 321 of the movable liquid cooling plate 32 is attached to the inner wall of the strip through slot 311, the inner wall of the tapered through hole 323 is attached to the corresponding outer wall of the supporting rib 312, and the second abutting surface 324 is located at one side of the first abutting surface 313 away from the battery (i.e. as shown in fig. 5), and when the movable liquid cooling plate 32 is in the second position, the second abutting surface 324 is flush with the first abutting surface 313 (i.e. as shown in fig. 6).
According to the invention, the temperature control battery compartment 1 can radiate heat and preserve heat of the battery according to different environments (namely in summer and winter).
Specifically, in summer, because the external environment temperature is higher, the external battery can generate heat in the charging and discharging process, in this stage, the movable liquid cooling plate 32 can be driven by the driving component (the electric push rod can be adopted), so that the movable liquid cooling plate 32 moves to the second position, at this time, the second abutting surface 324 of the movable liquid cooling plate 32 is tightly attached to the side wall of the battery, so as to improve the cooling effect on the battery, and in this process, the movable liquid cooling plate 32 and the positioning plate 31 are in a separated state, and the external air can contact with the battery through the strip-shaped through groove 311 and the taper-shaped through hole 323, so that the cooling effect on the battery is further improved (namely as shown in fig. 4).
In winter, the battery will generate heat in the process of charging and discharging, but the battery will not generate heat when not working, in this stage, the movable liquid cooling plate 32 can be driven by the driving component (electric push rod can be adopted) to move the movable liquid cooling plate 32 to the first position, at this time, the movable liquid cooling plate 32 is attached to the positioning plate 31, the strip-shaped portion 321 of the movable liquid cooling plate 32 can seal the strip-shaped through groove 311 of the positioning plate 31, the supporting prism of the positioning plate 31 can seal the tapered through hole 323 of the movable liquid cooling plate 32, so that the temperature control battery compartment 1 forms a closed state, and the first abutting surface 313 of the movable liquid cooling plate 32 is separated from the battery (as shown in fig. 3), thereby avoiding heat exchange between the air in the temperature control battery compartment 1 and the external air, and realizing the purpose of heat preservation of the battery.
As shown in fig. 3, 10 and 12, further, the fixing columns 4 are fixed at four corner positions of the locating plate 31 far away from one side of the battery, a cooling liquid inlet pipe 5 and a cooling liquid outlet pipe 6 are respectively fixed between the two fixing columns 4 at two ends of the locating plate 31, the cooling liquid inlet pipe 5 and the cooling liquid outlet pipe 6 are respectively positioned at strip-shaped through grooves 311 at two ends of the locating plate 31, the cooling liquid inlet pipe 5 and the cooling liquid outlet pipe 6 are connected with the movable liquid cooling plate 32 through a plurality of telescopic connecting pipes 8, and the pretension springs 7 are uniformly arranged between the movable liquid cooling plate and the cooling liquid inlet pipe 5 and the cooling liquid outlet pipe 6.
Based on the above design, in summer, the cooling liquid circulation system supplies liquid to the cooling liquid inlet pipe 5, after the cooling liquid enters the cooling liquid inlet pipe 5, the telescopic connecting pipe 8 stretches under the pressure of the cooling liquid, so that the movable liquid cooling plate 32 moves to the second position and stretches the pre-tightening spring 7, and the cooling treatment of the battery is automatically realized. When in winter, the cooling liquid circulation system stops working, and at the moment, the movable liquid cooling plate automatically moves to the first position under the elastic acting force of the pre-tightening spring 7, so that the temperature control battery compartment 1 is sealed, and the heat preservation treatment of the battery is realized.
Further, air flow grooves (not shown) are uniformly formed on the second abutting surface 324. The outside air can flow in the air flow grooves, and the cooling efficiency of the battery is improved.
Through experiments, the response time of the system in the peak period of load demand is controlled at the millisecond level, the stability and reliability of the system are remarkably improved, the system is predicted by combining with the power parameters, the system is judged to regulate and control various new energy devices in the next stage according to the prediction result, the current power supply system is in a pre-action state, large impact caused by poor state is prevented, meanwhile, the service life of the prediction device or device is shortened according to various parameter changes, in addition, the battery module of the energy storage module is high in stability, battery aging caused by environmental influence is avoided, and the service life of the battery module is prolonged.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. An intelligent multi-source input new energy control system based on a 240V direct current architecture comprises a power generation module, a 240V direct current bus, an energy storage module, a load module and an energy intelligent management and control module;
The power generation module comprises a photovoltaic power generation module, a wind power generation module, a fuel cell module, a commercial power module and an oil engine module, wherein the energy storage module is used for storing electric energy when the required electric quantity is smaller than the generated energy and outputting the electric energy when the required electric quantity is higher than the generated energy;
the energy intelligent control module is used for monitoring a system circuit and monitoring the environment to obtain electric power allocation control parameters, calculating and regulating the circuit through the system to obtain and adaptively regulate the system circuit according to the actual system circuit condition and the environment;
The energy storage module comprises a battery energy storage unit and a battery management system, wherein the battery management system is used for monitoring and controlling the charge and discharge of a battery;
The battery energy storage unit comprises a plurality of battery modules, wherein each battery module comprises a temperature control battery bin and a battery arranged in each temperature control battery bin, and each temperature control battery bin comprises a rectangular frame and liquid cooling plate components fixedly assembled on two sides of the rectangular frame;
The liquid cooling plate component comprises a positioning plate and a movable liquid cooling plate, wherein the positioning plate is uniformly provided with strip-shaped through grooves in a penetrating manner along the length direction, the cross sections of the strip-shaped through grooves from one side of a battery to the other side of the battery continuously decrease to form a conical structure, one side, close to the battery, of the positioning plate between adjacent strip-shaped through grooves is uniformly provided with a supporting prismatic table, and one side, far away from the positioning plate, of the supporting prismatic table on the positioning plate is provided with a first abutting surface in contact with the battery;
the movable liquid cooling plate comprises strip-shaped parts which are adapted to the strip-shaped through grooves and connecting parts which are uniformly arranged between the adjacent strip-shaped parts, a conical through hole is formed between the adjacent two connecting parts in the adjacent two strip-shaped parts, the movable liquid cooling plate is positioned at one side of the positioning plate, which is close to the battery, and a flat second abutting surface is formed at one side of the movable liquid cooling plate, which is close to the battery;
When the movable liquid cooling plate is positioned at the first position, the outer side wall of the strip-shaped part of the movable liquid cooling plate is attached to the inner wall of the strip-shaped through groove, the inner wall of the conical through hole is attached to the outer wall of the corresponding supporting prismatic table, the second abutting surface is positioned at one side of the first abutting surface far away from the battery, and when the movable liquid cooling plate is positioned at the second position, the second abutting surface is flush with the first abutting surface;
Fixing columns are fixed at four corner positions of the locating plate far away from one side of the battery, a cooling liquid inlet pipe and a cooling liquid outlet pipe are respectively fixed between the two fixing columns at two ends of the locating plate, the cooling liquid inlet pipe and the cooling liquid outlet pipe are respectively positioned at strip-shaped through grooves at two ends of the locating plate, the cooling liquid inlet pipe and the cooling liquid outlet pipe are connected with the movable liquid cooling plate through telescopic connecting pipes, and the movable liquid cooling plate, the cooling liquid inlet pipe and the cooling liquid outlet pipe are uniformly provided with pre-tightening springs;
And the second abutting surface is uniformly provided with air flow grooves.
2. The intelligent multi-source input new energy control system based on 240V direct current architecture of claim 1, wherein the 240V direct current bus directly supplies power to the load module.
3. The intelligent multi-source input new energy control system based on the 240V direct current framework according to claim 1 is characterized in that the photovoltaic power generation module and the fuel cell module are connected with a direct current bus after rectification change of the DC/DC module and are supplied to the energy storage module and the load module, and the wind power generation module and the fuel cell module are connected with the direct current bus and are supplied to the energy storage module and the load module after conversion of the bidirectional AC/DC into 240V direct current.
4. The intelligent multi-source input new energy control system based on the 240V direct current architecture of claim 1, wherein the energy intelligent management and control module comprises a data receiving sub-module, an impact parameter prediction sub-module, a data evaluation prediction module sub-module and a power control sub-module.
5. The intelligent multi-source input new energy control system based on 240V dc architecture of claim 4, wherein the data receiving sub-module is configured to receive an environmental data set and power data information;
the impact parameter prediction sub-module is used for calculating the influence of various parameters in the environment data set on the power data information by combining the environment data set and the power data information to obtain impact parameters;
The data evaluation prediction module submodule is used for processing the environment data set and the power data information acquired by the data receiving unit to obtain power allocation control parameters;
the power control submodule includes:
The module tide calculation unit is used for calculating the power grid structure and the generator operation condition, and determining steady-state operation state parameters of each part of the power system so as to obtain steady current parameters;
the energy distribution module unit is used for carrying out power distribution on the system power grid according to the stable current parameter and the intelligent allocation parameter to obtain an optimal energy distribution parameter;
The protection control module is used for acquiring protection control parameters according to the optimal energy distribution parameter set and the power data information set;
and the stability control unit is used for acquiring stability control parameters according to the optimal energy distribution parameter set and the power data information set, and outputting the stability current parameters, the optimal energy distribution parameters, the protection control parameters and the stability control parameters as an optimal power control scheme.
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| CN116315345A (en) * | 2022-12-19 | 2023-06-23 | 珠海格力电器股份有限公司 | Liquid cooling plate and battery assembly |
| CN116819355B (en) * | 2023-04-28 | 2024-05-17 | 广东恒翼能科技股份有限公司 | Energy-saving test system for direct-current bus of micro-grid at rear section of battery cell |
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