CN113131594A - System and method for arranging liquid flow electric fuel charging station in hydraulic power plant - Google Patents
System and method for arranging liquid flow electric fuel charging station in hydraulic power plant Download PDFInfo
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- CN113131594A CN113131594A CN201911391043.6A CN201911391043A CN113131594A CN 113131594 A CN113131594 A CN 113131594A CN 201911391043 A CN201911391043 A CN 201911391043A CN 113131594 A CN113131594 A CN 113131594A
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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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/40—Fuel cell technologies in production processes
Abstract
The invention provides a system and a method for arranging a liquid flow electric fuel charging station in a hydraulic power plant, which comprises the liquid flow electric fuel cell charging station in the hydraulic power plant, wherein the liquid flow electric fuel cell charging station comprises a charging and discharging control cabinet, a liquid flow electric fuel cell and a storage tank thereof, the charging and discharging control cabinet controls the charging and discharging of the liquid flow electric fuel cell, the hydraulic power plant is electrically connected with the charging and discharging control cabinet through a switch, and a power plant centralized control system is connected with the charging and discharging control cabinet in a control mode. The invention has the beneficial effects that: land resources can be effectively saved; a battery of the charging station participates in power grid frequency modulation auxiliary service; the liquid flow fuel cell has fast charging process and convenient transportation of the battery logistics.
Description
Technical Field
The invention relates to the technical field of charging stations, in particular to a system and a method for arranging a liquid stream electric fuel charging station in a hydraulic power plant.
Background
Generally, electric energy cannot be stored (the current battery energy storage is high in cost and limited in energy storage), so that the user needs how much electric energy, and the hydraulic power plant needs to synchronously generate how much electric energy, so that energy is not wasted. However, the required electrical load of each hydraulic power plant in the power system is constantly changing, and in order to maintain the active power balance and keep the system frequency stable, the power generation department needs to correspondingly change the power generation amount of the generator to adapt to the change of the electrical load, which is called peak shaving.
The hydraulic power plant is the mill that will follow potential energy and kinetic energy conversion to the electric energy, and the pressure or the velocity of flow impulse hydraulic turbine of water rotate, can become mechanical energy with who, and then the hydraulic turbine drives the generator rotation, utilizes the electromagnetic effect to produce the electric current. The hydraulic power plant peak regulation is simple and convenient to operate, rapid in action and low in cost, and brings good regulation performance and high economic benefit to power grid operation.
On the other hand, under the high concern of global energy conservation and environmental protection, new energy automobiles are in the process of transportation, and in recent years, the market of the new energy automobiles in China is continuously heated and is in a rapid development state. The scale of new energy automobiles in China is continuously enlarged, the demand on charging piles is increased day by day, but the construction quantity of the charging piles in China is far lower than the sales volume of the new energy automobiles, the current situation of difficult charging is increasingly prominent, and the development of the new energy automobiles is severely restricted by the slow development of the charging piles.
The battery replacement mode based on the battery rental mode in cooperation with the large-scale centralized charging has become a competitive business technology mode for the development of the current electric vehicles, because: 1) the car purchasing cost of the user can be reduced by adopting a battery rental mode; 2) the centralized charging of the battery can adopt a slow charging mode, so that the shortening of the service life of the battery caused by improper charging is avoided; 3) the fluctuation of the power grid caused by random charging of the electric automobile can be reduced by carrying out centralized management on the batteries; 4) the battery under the replacement can be utilized in echelon at the centralized charging station, so that the utilization rate of the battery is improved, and the secondary pollution of the battery to the environment is reduced.
The battery swapping mode based on battery lease is practically applied and popularized in countries such as Israel, Canada, Australia and Denmark; as an active participant in the electric vehicle industry, the national grid company and the southern grid company are also preparing to adopt an electric vehicle development mode mainly for battery replacement, and in terms of charging, the national grid company also defines a business mode of "centralized charging and unified distribution".
However, the energy density of the existing rechargeable battery is low, the battery replacement operation is complex, and if the convenience of battery replacement can be realized by using a fluid-state charging and discharging battery, the electric automobile in a battery rental or replacement mode can be more feasible in the future.
The redox flow battery is different from a conventional solid battery or a conventional redox flow battery, and the redox flow battery charger and the redox flow battery work independently, so that the storage and release of fluidized electric energy can be realized. The method is applied to the electric automobile, can provide longer endurance mileage, can realize that the charging process of the battery is a refueling process (full-electricity electric fuel injection), and can be completed within a few minutes.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a system and a method for arranging a hydraulic fuel charging station in a hydraulic power plant, which can realize the energy storage application of a high-capacity, centralized, efficient and safe rechargeable battery by using low-price electric power in the hydraulic power plant, the hydraulic power plant can obtain a peak regulation subsidy from the peak regulation subsidy, and the charging station can obtain the lowest charging cost price of negative electricity price from the peak regulation subsidy, so that the problems of insufficient peak regulation flexibility of the hydraulic power plant and difficult charging of new energy vehicles at present are solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a system for arranging a liquid flow electric fuel charging station in a hydraulic power plant comprises the liquid flow electric fuel battery charging station in the hydraulic power plant; the liquid flow electric fuel cell charging station comprises a charging and discharging control cabinet 7, a liquid flow electric fuel cell and a storage tank thereof; the charge and discharge control cabinet 7 is electrically connected to the storage tank of the flow fuel cell and is used for controlling the charge and discharge of the flow fuel cell; at least one of an outlet bus of a generator 100 of the hydraulic power plant, a bus of a booster station 101 and a bus of service power is electrically connected to an alternating current input end of the charge and discharge control cabinet 7 through a switch respectively; the power plant centralized control system 102 is connected with the switches and the charging and discharging control cabinet 7 in a control mode.
Further, at least one of the outlet bus of the generator 100 of the hydraulic power plant, the bus of the booster station 101 and the bus of the service power is connected to the respective switch through a transformer.
Further, the charge and discharge control cabinet 7 includes an inverter and a charge control unit; the alternating current input end of the inverter is electrically connected to the output end of each switch, and the direct current output end of the inverter is electrically connected to the charging end of the liquid flow electric fuel cell; the charging control unit is connected to the flow electric fuel cell and used for controlling the charging and discharging of the flow electric fuel cell.
Further, an electric energy output end of the charge and discharge control cabinet 7 is electrically connected to a bus of the booster station 101 through a switch and a transformer.
Further, the liquid flow electric fuel cell is any one or combination of nanofluid electric fuel containing lithium titanate, lithium sulfide, high molecular polymer or lithium manganese nickel oxide, inorganic electric fuel containing iron, vanadium or manganese, or organic electric fuel containing quinones, nitroxyl radicals or alloxazines.
A control method of a system provided with a liquid flow electric fuel charging station in a hydraulic power plant specifically comprises the following steps:
s10: when the power generation amount of the hydraulic power plant needs to be reduced, the power grid power dispatching center 104 sends a dispatching instruction to the power plant centralized control system 102 of the hydraulic power plant, the power plant centralized control system 102 controls any one or more of the switches to be closed and sends a charging instruction to the charging and discharging control cabinet 7, then electric energy output by any one of an outlet bus of a generator of the hydraulic power plant, a bus of a booster station and a bus of service power is output to the charging and discharging control cabinet 7, and the charging and discharging control cabinet 7 converts alternating current into direct current and then charges a liquid flow fuel cell of a liquid flow fuel charging station;
s11: the power plant centralized control system 102 acquires charging information of the charging and discharging control cabinet 7, controls the electric quantity supplied to the liquid flow electric fuel charging station according to peak regulation requirements, and controls each switch to be switched off and controls the charging and discharging control cabinet 7 to stop charging the rechargeable battery when the upper limit of the electric quantity which can be supplied to the liquid flow electric fuel charging station is reached.
Further, the method also includes step S12: when the power grid is in a power consumption peak period, the power grid power dispatching center sends a dispatching instruction to the power plant centralized control system, the power plant centralized control system sends a control instruction to the charge and discharge control cabinet and controls the switch connected with the power output end of the charge and discharge control cabinet to be closed, the charge and discharge control cabinet controls the discharge of the rechargeable battery, the power of the rechargeable battery is converted into alternating current through the charge and discharge control cabinet, the alternating current is boosted and then is output to the bus of the booster station, and therefore the alternating current is collected to enter a power grid line.
A method of configuring a system for providing a hydrojet fuel charging station within a hydraulic power plant, comprising the steps of:
s20, determining whether the liquid flow electric fuel charging station is in a one-way charging operation mode or a two-way charging and discharging operation mode according to the type of the hydraulic power plant and the type of the power grid auxiliary service which can be developed by the cooperation of the local hydraulic power plant and the power grid;
and S21, determining the capacity of the liquid flow electric fuel cell of the liquid flow electric fuel charging station according to the generated energy scale of the hydraulic power plant, the peak-shaving frequency modulation depth and the load quantity of the hydraulic power plant participating in the power grid auxiliary service and the demand quantity of the liquid flow electric fuel cell needing to be guaranteed for selling the liquid flow electric fuel cell.
A method of operating a system in a hydroelectric power plant having a hydrogalvanic fuel charging station that responds to grid assistance services by charging or discharging a hydrogalvanic fuel cell, selling a fully charged hydrogalvanic fuel cell and recovering spent hydrogalvanic fuel cells for use by a customer; the power grid auxiliary service comprises any one or combination of peak shaving, frequency modulation, black start or interruptible power storage load response; the fully charged liquid flow electric fuel cell can be directly pulled out of a charging unit of the liquid flow electric fuel cell charging station for disassembly, and is directly sold or directly leased to the outside; and the liquid flow electric fuel cell which is used up by the user is recycled to the hydraulic power plant and installed in a charging unit of the liquid flow electric fuel cell charging station for recharging.
The invention has the beneficial effects that:
1. the invention utilizes the resources in the plant area of the hydraulic power plant, including the large-scale floatability or underwater liquid flow electric fuel storage bag arranged in the water body of the reservoir in the general hydraulic power plant, and can effectively save land resources;
2. the water needed in the process of charging the electric fuel can come from a reservoir, and the water resource of a hydraulic power plant is effectively utilized;
3. in addition, the cost and the electricity price in the hydraulic power plant are lower, if the deep peak regulation electricity price of the hydraulic power plant is utilized, the charging cost is lower, some hydraulic power plants can utilize the battery of a centralized charging station to participate in the grid frequency modulation auxiliary service, negative electricity price charging can be realized, namely, the more charging is, the more profit is;
4. the operation and the technical personnel and the management team in the hydraulic power plant are utilized to carry out specialized operation and maintenance on the centralized charging station, so that the safe operation of the charging station can be ensured, and the facilities such as safety, fire protection, voltage transformation and the like in the hydraulic power plant can be directly applied to the charging station, and compared with a newly-built charging station on the load side of a power grid in a city region, the overall investment can be greatly reduced.
5. The liquid flow electric fuel cell in a fluid state can be combined with a hydraulic power plant or a gas station to realize the 'oiling charging' of the liquid flow electric fuel in the hydraulic power plant or in an urban area, the charging process is fast, and the logistics transportation of the cell is convenient.
Drawings
FIG. 1 is a block diagram showing the system configuration according to embodiment 1 of the present invention;
FIG. 2 is a schematic block diagram of a system according to embodiment 1 of the present invention;
FIG. 3 is a flowchart of a control method according to embodiment 2 of the present invention;
FIG. 4 is a flowchart of a configuration method according to embodiment 3 of the present invention;
FIG. 5 is a flowchart of the operation method of embodiment 4 of the present invention.
Reference numerals
The system comprises a 1-high voltage transformer, a 2-high voltage switch, a 3-medium voltage transformer, a 4-medium voltage switch, a 5-plant power transformer, a 6-plant variable switch, a 7-charge and discharge control cabinet, an 8-rechargeable battery, a 100-generator, a 101-booster station, a 102-power plant centralized control system, a 103-water turbine and a 104-power grid power dispatching center.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
Example 1
The embodiment provides a system for setting a liquid flow electric fuel charging station in a hydraulic power plant, which can respond to any one of power grid auxiliary services such as power grid peak shaving, frequency modulation, black start, interruptible power storage load and the like by utilizing charging and discharging of a charging battery pack in the liquid flow electric fuel charging station, a fully charged liquid flow electric fuel cell can be filled into an automobile, and the liquid flow electric fuel cell with electric quantity exhausted by a user is recycled to the hydraulic power plant and is refilled in the charging station.
Specifically, as shown in fig. 2, the system of the present embodiment includes a high-voltage transformer 1, a high-voltage switch 2, a medium-voltage transformer 3, a medium-voltage switch 4, a plant power transformer 5, a plant substation switch 6, and a charging station, where the charging station includes a charging and discharging control cabinet 7 and a rechargeable battery 8; the charging and discharging control cabinet 7 is electrically connected to the rechargeable battery 8 and is used for controlling charging and discharging of the rechargeable battery 8; the input end of the medium voltage transformer 3 is electrically connected to the output end of the generator 100 of the hydraulic power plant, and the output end of the medium voltage transformer is electrically connected to the alternating current input end of the charge and discharge control cabinet 7 through a medium voltage switch 4; the input end of the high-voltage transformer 1 is electrically connected to the output end bus of the booster station 101 of the hydraulic power plant, and the output end of the high-voltage transformer is electrically connected to the alternating current input end of the charge and discharge control cabinet 7 through the high-voltage switch 2; the power transformer 5 is arranged on a service power line of a hydraulic power plant and is electrically connected to an alternating current input end of the charge and discharge control cabinet 7 through a power switch 6; the electric energy output end of the charge and discharge control cabinet 7 is electrically connected to the bus of the booster station 101 through a switch and a transformer; the power plant centralized control system 102 of the hydraulic power plant is respectively in control connection with the high-voltage transformer 1, the high-voltage switch 2, the medium-voltage transformer 3, the medium-voltage switch 4, the plant power transformer 5, the plant transformer switch 6 and the charging and discharging control cabinet 7.
In addition, an outlet bus of a generator of a hydraulic power plant, a bus of a booster station and a bus of service power can also be directly connected without a transformer and electrically connected with an alternating current input end of the charging and discharging control cabinet 7 through the high-voltage switch 2, the medium-voltage switch 4 and the plant transformer switch 6.
In the present embodiment, the charge and discharge control cabinet 7 includes an inverter and a charge control unit; the alternating current input end of the inverter is electrically connected to the output ends of the high-voltage switch, the medium-voltage switch and the plant transformer switch respectively, and the direct current output end of the inverter is electrically connected to the charging end of the rechargeable battery; the charging control unit is connected with the rechargeable battery in a control mode and is used for controlling charging and discharging of the rechargeable battery.
As shown in fig. 2, the hydroelectric generating set mainly comprises a water turbine 103 and a generator 100.
The liquid flow electric fuel cell used by the invention is any one or combination of nano fluid electric fuel containing lithium titanate, lithium sulfide, high molecular polymer or lithium manganese nickel oxide, inorganic electric fuel containing iron, vanadium or manganese, or organic electric fuel containing quinones, nitroxyl radicals or alloxazines.
The working principle of the system is as follows:
the hydroelectric generating set is started quickly, only 2-4 minutes are needed from starting to full-power running, the variable load tracking capability is high, the peak regulation depth is close to 100% of rated capacity, and compared with a thermal power generating set, the hydroelectric generating set is slow in starting, slow in climbing speed, limited in peak regulation depth and higher in economic benefit. The electric energy stored by the electric fuel charging station can reach megawatt level or even higher, in the time period when the hydropower plant needs to participate in the deep peak shaving of the power grid, the hydropower plant is expected to reduce the generated energy and carry out the deep peak shaving under the general condition, at the moment, the charging station is used as an energy storage unit, and the electric power generated by the hydropower plant is directly charged to the charging station by using the deep peak shaving load electric power, so that the online electric quantity is reduced, and the peak shaving benefit is obtained. In addition, the hydropower station can utilize the charging station as an energy storage unit in the rich water period, and the electric power of the charging station is sent into the power grid again in the dry water period, so that the electric power supply in the dry water period is ensured.
In this embodiment, the electric energy sources of the liquid stream electric fuel charging station mainly comprise an outlet bus of a generator of a hydroelectric power plant, a bus of a booster station and a bus of service power. When the power generation amount of the hydraulic power plant needs to be reduced, the power grid power dispatching center 104 sends a dispatching instruction to the power plant centralized control system 102 of the hydraulic power plant, the power plant centralized control system 102 controls any one or more of the high-voltage switch 2, the medium-voltage switch 4 and the plant transformer 6 to be closed, controls the medium-voltage transformer 3, the high-voltage transformer 1 and the plant power transformer 5 to work, and sends a charging instruction to the charging and discharging control cabinet 7 (charging and discharging control unit), so that the output electric energy of the outlet bus of the generator of the hydraulic power plant, the bus of the booster station and the plant power is output to the charging and discharging control cabinet 7 through the medium-voltage transformer 3, the high-voltage transformer 1 and the plant power transformer 5 respectively, and the charging and discharging control cabinet 7 (inverter) converts alternating current into direct current and then charges the charging. The power plant centralized control system 102 acquires charging information of the charging and discharging control cabinet 7 in real time, controls the electric quantity supplied to the liquid flow electric fuel charging station according to peak regulation requirements, and controls the high-voltage switch 2, the medium-voltage switch 4 and the plant transformer 6 to be turned on, the medium-voltage transformer 3, the high-voltage transformer 1 and the plant transformer 5 to stop working and the charging and discharging control cabinet 7 (charging and discharging control unit) to stop charging the rechargeable battery when the upper limit of the electric quantity which can be supplied to the liquid flow electric fuel charging station is reached.
The full-charged electric fuel can be injected into a large floating or underwater storage bag and is arranged in the reservoir water body of the hydropower station, so that the space of the hydropower station is fully utilized. The floating storage bag body is double-layer, and the middle part is provided with an inflation cavity which can be inflated and expanded to form an air bag. The outer layer of the bag body is made of light foaming materials, and the inner layer of the bag body is made of insulating materials. The stability of the electric fuel can be guaranteed only by storing the charged electric fuel under a certain temperature condition, so that when the water temperature is proper, the floating type storage bag and the underwater type storage bag are placed in the water body of the reservoir of the hydropower station, the storage space is saved, the water of the reservoir can be used as a natural heat exchange device, and the stability of the electric fuel is guaranteed.
Example 2
As shown in fig. 3, the present embodiment provides a control method of a system using a liquid stream electric fuel charging station in a hydraulic power plant, which specifically includes:
s10: when the power generation amount of the hydraulic power plant needs to be reduced, the power grid power dispatching center 104 sends a dispatching instruction to the power plant centralized control system 102 of the hydraulic power plant, the power plant centralized control system 102 controls any one or more of the switches to be closed and sends a charging instruction to the charging and discharging control cabinet 7, then electric energy output by any one of an outlet bus of a generator of the hydraulic power plant, a bus of a booster station and a bus of service power is output to the charging and discharging control cabinet 7, and the charging and discharging control cabinet 7 converts alternating current into direct current and then charges a liquid flow fuel cell of a liquid flow fuel charging station;
s11: the power plant centralized control system 102 acquires charging information of the charging and discharging control cabinet 7 in real time, controls the electric quantity supplied to the liquid flow electric fuel charging station according to peak regulation requirements, and controls each switch to be switched off and controls the charging and discharging control cabinet 7 to stop charging the rechargeable battery when the upper limit of the electric quantity which can be supplied to the liquid flow electric fuel charging station is reached.
S12: when the power grid is in a power consumption peak period, the power grid power dispatching center sends a dispatching instruction to the power plant centralized control system, the power plant centralized control system sends a control instruction to the charge and discharge control cabinet and controls the switch connected with the power output end of the charge and discharge control cabinet to be closed, the charge and discharge control cabinet controls the discharge of the rechargeable battery, the power of the rechargeable battery is converted into alternating current through the charge and discharge control cabinet, the alternating current is boosted and then is output to the bus of the booster station, and therefore the alternating current is collected to enter a power grid line.
According to the method for utilizing the system of the liquid flow electric fuel charging station in the hydraulic power plant, when the power generation amount of the hydraulic power plant needs to be reduced, the electric energy is stored in the liquid flow electric fuel charging station in the hydraulic power plant, and when the power generation amount of the hydraulic power plant needs to be improved, the electric energy stored in the liquid flow electric fuel charging station in the hydraulic power plant is released to a power grid, so that power grid auxiliary services such as power frequency modulation and peak shaving are realized.
When a power failure accident occurs, the full-charged liquid flow electric fuel charging station in the hydraulic power plant can be used as a black start power supply, the liquid flow electric fuel charging station starts a discharging program at the moment, the charging and discharging control cabinet converts direct current into alternating current, the alternating current is output to a booster station bus after boosting, a large unit of the hydraulic power plant is started after a power transmission line is charged, the started unit is connected to the grid to recover the power generation capacity, and at the moment, a part of electric power can be charged into the liquid flow electric fuel charging station again to meet a certain amount of load, so that the stability of the system is ensured, and black start is realized.
Example 3
As shown in fig. 4, the present embodiment provides a method for configuring a system for installing a liquid stream electric fuel charging station in a hydraulic power plant, comprising the following steps:
s20, determining whether the liquid flow electric fuel charging station is in a one-way charging operation mode or a two-way charging and discharging operation mode according to the type of the hydraulic power plant and the type of the power grid auxiliary service which can be developed by the cooperation of the local hydraulic power plant and the power grid;
and S21, determining the capacity of the redox flow fuel cell of the redox flow fuel charging station according to the generated energy scale of the hydroelectric power plant, the peak-adjusting frequency-adjusting depth and the load capacity of the hydroelectric power plant participating in the power grid auxiliary service, such as whether the hydroelectric power plant participates in system peak adjustment in flood season, dry season and transition period, and the demand of the redox flow fuel cell which needs to be sold to the outside is ensured.
In this embodiment, when the liquid flow electric fuel charging station is operated for unidirectional charging, the electric energy of the hydraulic power plant is stored in the rechargeable battery in the liquid flow electric fuel charging station, and the rechargeable battery can be detached and rented or sold. When the liquid flow electric fuel charging station is in bidirectional charging operation, the electric energy of a hydraulic power plant is stored in the rechargeable battery in the liquid flow electric fuel charging station, the liquid flow electric fuel charging station can discharge the electric energy, the electric energy is input into a power grid, the rechargeable battery can be detached and leased or sold externally, the oil-filling type charging of the liquid flow electric fuel in the hydraulic power plant or in an urban area can be realized, the charging process is fast, and the battery logistics transportation is convenient.
Example 4
As shown in fig. 5, the present embodiment provides a method of operating a system for providing a hydroelectric fuel charging station within a hydraulic power plant. The charging station for the liquid flow electric fuel cell responds to the power grid auxiliary service by utilizing the charging or discharging of the liquid flow electric fuel cell, and sells the fully charged liquid flow electric fuel cell and recovers the liquid flow electric fuel cell which is used up by a user and needs to be charged; the power grid auxiliary service comprises any one or combination of peak shaving, frequency modulation, black start or interruptible power storage load response; interruptible power storage load response: when an electric power company has to interrupt a certain amount of loads, the power grid power dispatching center sends dispatching instructions to a power plant centralized control system of a hydraulic power plant, a part of power is stored in a rechargeable battery of the redox flow electric fuel cell charging station, the electric energy of the rechargeable battery can be sold to users, and the fully charged redox flow electric fuel cell can be directly pulled out from a charging unit of the redox flow electric fuel cell charging station for disassembly and direct sale or direct lease to the outside; and after the electric quantity is used up, the liquid flow electric fuel cell is returned to the purchasing place or the leasing place and is recycled to the hydraulic power plant by the transport vehicle, and the liquid flow electric fuel cell is installed in a charging unit of the liquid flow electric fuel cell charging station for recharging and is sold or leased again.
Various corresponding changes and modifications can be made by those skilled in the art based on the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.
Claims (10)
1. A system for arranging a liquid flow electric fuel charging station in a hydraulic power plant comprises the hydraulic power plant and a power plant centralized control system 102, and is characterized by further comprising the liquid flow electric fuel battery charging station in the hydraulic power plant; the charging station for the liquid flow electric fuel cell comprises a charging and discharging control cabinet (7), the liquid flow electric fuel cell and a storage tank or a storage bag of the liquid flow electric fuel cell; the charge and discharge control cabinet (7) is electrically connected with the storage tank of the flow-electric fuel cell and is used for controlling the charge and discharge of the flow-electric fuel cell; at least one of an outlet bus of a generator (100) of the hydraulic power plant, a bus of a booster station (101) and a bus of service power is electrically connected to an alternating current input end of the charging and discharging control cabinet (7) through a switch respectively; and the power plant centralized control system (102) is in control connection with each switch and the charging and discharging control cabinet (7).
2. The system for arranging a hydrojet fuel charging station in a hydraulic power plant according to claim 1, characterized in that at least one of the outlet bus of the generator (100) of the hydraulic power plant, the bus of the booster station (101) and the bus of the service power is connected to the respective switch via a transformer.
3. The system for arranging a liquid stream electric fuel charging station in a hydraulic power plant according to claim 1, characterized in that the charging and discharging control cabinet (7) comprises an inverter and a charging control unit; the alternating current input end of the inverter is electrically connected to the output end of each switch, and the direct current output end of the inverter is electrically connected to the charging end of the liquid flow electric fuel cell; the charging control unit is connected to the flow electric fuel cell and used for controlling the charging and discharging of the flow electric fuel cell.
4. The system for arranging the liquid flow electric fuel charging station in the hydraulic power plant as recited in claim 1, characterized in that the electric energy output end of the charging and discharging control cabinet (7) is electrically connected with the bus of the booster station (101) through a switch and a transformer.
5. The system of claim 1, wherein the hydroelectric fuel cell is any one or a combination of nanofluid electric fuel containing lithium titanate, lithium sulfide, high molecular polymer or lithium manganese nickel oxide, inorganic electric fuel containing iron, vanadium or manganese, or organic electric fuel containing quinones, nitroxyl radicals or alloxazines.
6. The system of claim 1, wherein the fully charged electric fuel is injected into a large floating or submerged storage bag located in the reservoir water of the hydroelectric power plant.
7. A control method for a system for arranging a liquid stream electric fuel charging station in a hydraulic power plant according to any of the preceding claims, characterized in that it comprises:
s10: when the power generation amount of a hydraulic power plant needs to be reduced, a power grid power dispatching center (104) sends dispatching instructions to a power plant centralized control system (102) of the hydraulic power plant, the power plant centralized control system (102) controls any one or more of switches to be closed and sends charging instructions to a charging and discharging control cabinet (7), electric energy output by any one of an outlet bus of a generator of the hydraulic power plant, a bus of a booster station and a bus of service power is output to the charging and discharging control cabinet (7), and the charging and discharging control cabinet (7) converts alternating current into direct current and then charges a liquid flow electric fuel battery of a liquid flow electric fuel charging station;
s11: the power plant centralized control system (102) acquires charging information of the charging and discharging control cabinet (7), controls the electric quantity supplied to the liquid flow electric fuel charging station according to peak regulation requirements, and controls each switch to be switched off and controls the charging and discharging control cabinet (7) to stop charging the rechargeable battery when the upper limit of the electric quantity which can be supplied to the liquid flow electric fuel charging station is reached.
8. The method for controlling a system for installing a liquid fuel charging station in a hydraulic power plant according to claim 7, further comprising S12: when the power grid is in a power consumption peak period, the power grid power dispatching center sends a dispatching instruction to the power plant centralized control system, the power plant centralized control system sends a control instruction to the charge and discharge control cabinet and controls the switch connected with the power output end of the charge and discharge control cabinet to be closed, the charge and discharge control cabinet controls the discharge of the rechargeable battery, the power of the rechargeable battery is converted into alternating current through the charge and discharge control cabinet, the alternating current is boosted and then is output to the bus of the booster station, and therefore the alternating current is collected to enter a power grid line.
9. A method for configuring a system for arranging a hydrojet fuel charging station in a hydraulic power plant according to any of claims 1-6, comprising the steps of:
s20, determining whether the liquid flow electric fuel charging station is in a one-way charging operation mode or a two-way charging and discharging operation mode according to the type of the hydraulic power plant and the type of the power grid auxiliary service which can be developed by the cooperation of the local hydraulic power plant and the power grid;
and S21, determining the capacity of the liquid flow electric fuel cell of the liquid flow electric fuel charging station according to the generated energy scale of the hydraulic power plant, the peak-shaving frequency modulation depth and the load quantity of the hydraulic power plant participating in the power grid auxiliary service and the demand quantity of the liquid flow electric fuel cell needing to be guaranteed for selling the liquid flow electric fuel cell.
10. A method of operating a system for installing a redox flow fuel charging station in a hydraulic power plant according to any of claims 1-6, wherein the redox flow fuel cell charging station responds to grid assistance services by charging or discharging a redox flow fuel cell, selling a fully charged redox flow fuel cell and recovering spent redox flow fuel cells for use by a user; the power grid auxiliary service comprises any one or combination of peak shaving, frequency modulation, black start or interruptible power storage load response; the fully charged liquid flow electric fuel cell can be directly pulled out of a charging unit of the liquid flow electric fuel cell charging station for disassembly, and is directly sold or directly leased to the outside; and the liquid flow electric fuel cell which is used up by the user is recycled to the hydraulic power plant and installed in a charging unit of the liquid flow electric fuel cell charging station for recharging.
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| CN201911391043.6A CN113131594A (en) | 2019-12-30 | 2019-12-30 | System and method for arranging liquid flow electric fuel charging station in hydraulic power plant |
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| CN201911391043.6A CN113131594A (en) | 2019-12-30 | 2019-12-30 | System and method for arranging liquid flow electric fuel charging station in hydraulic power plant |
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