CN115333226A - Power supply method and equipment for magnetic suspension energy storage flywheel - Google Patents
Power supply method and equipment for magnetic suspension energy storage flywheel Download PDFInfo
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- CN115333226A CN115333226A CN202211256806.8A CN202211256806A CN115333226A CN 115333226 A CN115333226 A CN 115333226A CN 202211256806 A CN202211256806 A CN 202211256806A CN 115333226 A CN115333226 A CN 115333226A
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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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
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
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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
- H02J15/00—Systems for storing electric energy
- H02J15/007—Systems for storing electric energy involving storage in the form of mechanical energy, e.g. fly-wheels
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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
- H02J3/30—Arrangements for balancing of the load in a network by storage of energy using dynamo-electric machines coupled to flywheels
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Supply And Distribution Of Alternating Current (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a power supply method and equipment for a magnetic suspension energy storage flywheel, wherein a dual-redundancy magnetic suspension power supply is designed by the method, and a flywheel magnetic suspension system is powered by using electric energy stored by a flywheel per se through a machine side converter; when the flywheel supplies power to the outside, the reliability of the machine side converter, the flywheel and the flywheel heat dissipation system also needs to be ensured; designing a redundancy power supply of the magnetic suspension flywheel system; the invention can provide redundant power supply and monitoring and improve the system reliability.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a power supply method, a power supply device, power supply equipment and a power supply storage medium for a magnetic suspension energy storage flywheel.
Background
The magnetic suspension controller adopts the commercial power or the station transformer to supply power, and the commercial power or the station power has the possibility of power failure, so that equipment is damaged, and the reliability is low. Or UPS is adopted for power supply, and the system is complex. The converter also adopts commercial power or station transformer to supply power, and once the power is cut off, the flywheel system can not work normally. The flywheel heat dissipation system is powered off or the flywheel is overheated when being supplied with power. In order to improve the service life and the charging and discharging efficiency of the energy storage flywheel, the energy storage flywheel is supported by a magnetic suspension bearing. The failure of the magnetic levitation power supply can cause the equipment to be damaged.
Disclosure of Invention
The invention provides a power supply method, a power supply device, power supply equipment and a power supply storage medium for a magnetic suspension energy storage flywheel, and aims to provide redundancy power supply and monitoring and improve the reliability of a system.
To this end, a first technical object of the present invention is to provide a power supply method for a magnetic levitation energy storage flywheel, comprising:
a main power supply branch is arranged and connected between the magnetic suspension energy storage flywheel and a power supply grid; the main power supply branch is connected to a power supply grid through a grid-side converter, and is connected with a magnetic suspension energy storage flywheel through a machine-side converter; a direct current bus is formed between the grid-side converter and the machine-side converter;
a standby power supply branch is arranged and connected between the magnetic suspension energy storage flywheel and a standby power grid; the standby power supply branch transmits the power of the standby power grid to the magnetic suspension energy storage flywheel through a power supply device;
supplying power to the magnetic suspension energy storage flywheel through the main power supply branch; when the main power supply branch is powered off, the standby power supply branch is used for supplying power to the key equipment of the magnetic suspension energy storage flywheel, so that the power failure fault is eliminated.
The working mode of the machine side converter is a power mode or a voltage mode; wherein, the first and the second end of the pipe are connected with each other,
the power mode is constant power input and output and is used for controlling the charging and discharging power of the magnetic suspension energy storage flywheel, and the grid-side converter is used for stabilizing the voltage of a direct-current bus at the moment;
the voltage mode is used for stabilizing the voltage of the direct current bus;
when the power supply grid is powered off, the machine side converter operates in a voltage mode to ensure the voltage stability of the direct current bus, and power is supplied through the power module of the magnetic suspension energy storage flywheel.
Wherein, the standby power grid uses commercial power or supplies power by the high-voltage station power and the station transformer; the station power utilization or commercial power provides 380VAC alternating current, and the 380VAC alternating current is transmitted to the power module to supply power to the machine side converter and the magnetic suspension energy storage flywheel.
The primary side of the transformer for the station is connected to the high-voltage side of the power plant, and the secondary side of the transformer for the station is a 380V three-phase four-wire system power supply.
The magnetic suspension energy storage flywheel adopts a separate power supply scheme of control electricity and power electricity; wherein the content of the first and second substances,
the power electricity and the control electricity are obtained by taking electricity from a direct current bus through a DCDC and an ACDC on an alternating current side in a double-way mode and then connecting the electricity in parallel through a diode; two redundancies of power electricity and control electricity are uploaded to a main control monitor through a voltage sensor, and any redundancy output fault can be alarmed to be maintained and replaced.
The alternating current power supply of the machine side converter, the flywheel heat dissipation, the vacuum pump and the brake resistor heat dissipation adopts double redundancy setting of a direct current bus and alternating current.
The alternating current load power supply adopts a DCAC inverter, the direct current side of the DCAC inverter is connected to a direct current bus, and meanwhile, an alternating current bypass is arranged for preventing the power supply interruption caused by the failure of the DCAC inverter; when the output of the DCAC inverter is normal, the AC output adopts the inverter to supply power, and when the output of the DCAC inverter is abnormal, the bypass power supply is automatically switched.
A second technical object of the present invention is to provide a power supply device for a magnetic suspension energy storage flywheel, comprising:
the main power supply module is used for setting a main power supply branch and is connected between the magnetic suspension energy storage flywheel and a power supply grid; the main power supply branch is connected to a power supply grid through a grid-side converter, and is connected with a magnetic suspension energy storage flywheel through a machine-side converter; a direct current bus is formed between the grid-side converter and the machine-side converter;
the standby power supply module is used for setting a standby power supply branch and is connected between the magnetic suspension energy storage flywheel and a standby power grid; the standby power supply branch transmits the power of the standby power grid to the magnetic suspension energy storage flywheel through a power supply device;
the power supply control module is used for supplying power to the magnetic suspension energy storage flywheel through the main power supply branch circuit; when the main power supply branch is powered off, the standby power supply branch supplies power to key equipment of the magnetic suspension energy storage flywheel, and the power failure fault is eliminated.
A third object of the present invention is to provide an electronic apparatus, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the steps of the method of the foregoing technical solution.
A fourth object of the present invention is to propose a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the steps of the method according to the aforementioned technical solution.
Different from the prior art, the power supply method for the magnetic suspension energy storage flywheel provided by the invention designs a dual-redundancy magnetic suspension power supply, and supplies power to a magnetic suspension system of the flywheel through a machine side converter by utilizing the electric energy stored by the flywheel; when the flywheel supplies power to the outside, the reliability of the machine side converter, the flywheel and the flywheel heat dissipation system also needs to be ensured; designing a redundancy power supply of the magnetic suspension flywheel system; the invention can provide redundant power supply and monitoring and improve the system reliability.
Drawings
The invention and/or additional aspects and advantages will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of a power supply method for a magnetic suspension energy storage flywheel provided by the invention.
Fig. 2 is a schematic diagram of a power supply arrangement of a power supply method for a magnetic suspension energy storage flywheel provided by the invention.
Fig. 3 is a schematic diagram of a power supply principle of a power supply method for a magnetic suspension energy storage flywheel provided by the invention.
Fig. 4 is a schematic structural diagram of a power supply device for a magnetic suspension energy storage flywheel provided by the invention.
FIG. 5 is a block diagram of a non-transitory computer readable storage medium storing computer instructions according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Fig. 1 shows a power supply method for a magnetic suspension energy storage flywheel according to an embodiment of the present invention. The method comprises the following steps:
a main power supply branch is arranged and connected between the magnetic suspension energy storage flywheel and a power supply grid; the main power supply branch is connected to a power supply grid through a grid-side converter, and is connected with a magnetic suspension energy storage flywheel through a machine-side converter; a direct current bus is formed between the grid-side converter and the machine-side converter;
a standby power supply branch is arranged and connected between the magnetic suspension energy storage flywheel and a standby power grid; the standby power supply branch transmits the power of the standby power grid to the magnetic suspension energy storage flywheel through a power supply device;
supplying power to the magnetic suspension energy storage flywheel through the main power supply branch; when the main power supply branch is powered off, the standby power supply branch is used for supplying power to the key equipment of the magnetic suspension energy storage flywheel, so that the power failure fault is eliminated.
The working modes of the machine side converter are a power mode and a voltage mode; wherein the content of the first and second substances,
the power mode is constant power input and output and is used for controlling the charging and discharging power of the magnetic suspension energy storage flywheel;
the voltage mode is used for stabilizing the voltage of the direct current bus;
when the power supply grid is powered off, the machine side converter operates in a voltage mode to ensure the voltage stability of the direct current bus, and power is supplied through the power module of the magnetic suspension energy storage flywheel.
Wherein, the standby power grid uses commercial power or supplies power by a high-voltage station power utilization transformer and a station transformer; the station power utilization and the commercial power supply provide 380VAC alternating current which is transmitted to the power module to supply power to the machine side converter and the magnetic suspension energy storage flywheel.
As shown in fig. 2, there are two power supply branches for supplying power to the magnetic suspension energy storage flywheel, in the figure, the machine-side converter can work in a power mode or a voltage mode, the power mode is constant power input and output, the charging and discharging power of the flywheel is controlled, and the voltage mode can stabilize the voltage of the direct current bus. When the power grid is powered off, the machine side converter can work to a voltage mode, the voltage stability of the direct current bus is guaranteed, and the energy stored by the flywheel is used for supplying power. Therefore, the system can be supplied with power through the direct current bus to ensure normal operation no matter whether the power grid has power or not. However, the invention designs an alternating current path power supply backup in consideration of the possibility of the failure of the machine side converter or the power supply equipment mounted to the direct current bus. The alternating current and direct current paths supply power to each other for mutual hot backup, and the safety is not influenced by the power failure or fault of any one path. The alternating current path can adopt commercial power or station transformer power supply. The primary side of the transformer for the station is connected to the high-voltage side of the power plant, and the secondary side of the transformer for the station is a 380V three-phase four-wire system power supply.
As shown in fig. 3, the magnetic suspension energy storage flywheel adopts a separate power supply scheme of control power and power.
Fig. 3 is a circuit design diagram showing synchronous operation of two magnetic suspension energy storage flywheels. In the implementation mode of the invention, four magnetic suspension energy storage flywheels are used to operate optimally in synchronization, and the four flywheels form an array. In other embodiments, a greater number of flywheels may be coupled in parallel as is appropriate. In fig. 3, the control power for supplying power to the magnetic suspension energy storage flywheel is 24VDC, and is used for supplying power to the main control system and the relay of the magnetic suspension energy storage flywheel; the magnetic suspension energy storage flywheel fault reporting system can ensure that when the magnetic suspension energy storage flywheel has faults such as short circuit, the power electricity can be subjected to overcurrent protection, control electricity and communication are not influenced, and the fault can be reported to the master control reliably. The magnetic suspension power electricity and the control electricity are obtained by taking electricity from a direct current bus through a DCDC and an ACDC on an alternating current side in a double-way mode and then connecting the electricity in parallel through a diode. Two redundancies of power electricity and control electricity are uploaded to a main control monitor through a voltage sensor, and any redundancy output fault can be alarmed to be maintained and replaced. In order to ensure the normal direct current bus, the machine side converter and the flywheel are in a working state at any time. Therefore, the alternating current power supply of the machine side converter, the flywheel heat dissipation, the vacuum pump and the brake resistor heat dissipation all adopt dual-redundancy setting. The alternating current load power supply is realized by adopting a DCAC inverter, the direct current side of the DCAC inverter is connected to a direct current bus, and meanwhile, an alternating current bypass is arranged for preventing the power supply interruption caused by the DCAC inverter faults. When the output of the DCAC inverter is normal, the AC output adopts the inverter to supply power, and when the output of the DCAC inverter is abnormal, the bypass power supply is automatically switched. In the invention, the control electricity refers to the electricity supplied to the magnetic suspension energy storage flywheel, and the power electricity refers to the electricity generated by the magnetic suspension energy storage flywheel.
In fig. 3, each magnetic levitation energy storage flywheel is provided with a dc bus, such as dc buses 1-4 in the figure, and the dc bus 1 is taken as an example for illustration, the dc bus 1 corresponds to the dc bus in fig. 1, and supplies a dc voltage of 200VDC through a DCDC converter hung on the dc bus to power a magnetic levitation system of the magnetic levitation energy storage flywheel; in the magnetic suspension energy storage flywheel, 200VDC direct current voltage is sent to a master control through a voltage sensor for monitoring, and meanwhile, 24VDC direct current voltage is generated through another DCDC converter and is used for power supply of the master control and a relay of the magnetic suspension energy storage flywheel to provide control power for the magnetic suspension energy storage flywheel; furthermore, auxiliary devices of the magnetic suspension energy storage flywheel, such as a flywheel heat dissipation fan, a converter heat dissipation fan, a vacuum pump and a temperature control switch, are powered by converting a direct current bus into 380ACV alternating current voltage through a DCAC inverter. In addition, when the dc bus is powered off or the dc side power supply device fails, the station power consumption or the commercial power in fig. 1 is converted into a suitable voltage by performing voltage conversion, and the suitable voltage is supplied to the auxiliary device and the machine side converter, so that the magnetic suspension energy storage flywheel can normally operate.
As shown in fig. 4, the present invention provides a power supply device 300 for a magnetic levitation energy storage flywheel, comprising:
the main power supply module 310 is used for setting a main power supply branch and is connected between the magnetic suspension energy storage flywheel and a power supply grid; the main power supply branch is connected to a power supply grid through a grid-side converter, and is connected with a magnetic suspension energy storage flywheel through a machine-side converter; a direct current bus is formed between the grid-side converter and the machine-side converter;
the standby power supply module 320 is used for arranging a standby power supply branch and is connected between the magnetic suspension energy storage flywheel and a standby power grid; the standby power supply branch transmits the power of the standby power grid to the magnetic suspension energy storage flywheel through a power supply device;
the power supply control module 330 is used for supplying power to the magnetic suspension energy storage flywheel through the main power supply branch; when the main power supply branch is powered off, the standby power supply branch is used for supplying power to the key equipment of the magnetic suspension energy storage flywheel, so that the power failure fault is eliminated.
In order to implement the embodiment, the present invention further provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the steps of the power supply method for the magnetic levitation energy storage flywheel of the foregoing technical scheme.
As shown in fig. 5, a non-transitory computer readable storage medium 800 includes a memory 810 of instructions executable by a processor 820 for powering a magnetic levitation energy storage flywheel to perform a method, and an interface 830. Alternatively, the storage medium may be a non-transitory computer readable storage medium, for example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
To achieve the embodiments, the present invention also proposes a non-transitory computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, enables a power supply for a magnetically levitated energy storage flywheel as an embodiment of the present invention.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the described embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
One of ordinary skill in the art will appreciate that all or part of the steps carried by the method implementing the embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The mentioned storage medium may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the embodiments described herein without departing from the scope of the invention.
Claims (10)
1. A power supply method for a magnetic suspension energy storage flywheel is characterized by comprising the following steps:
a main power supply branch is arranged and connected between the magnetic suspension energy storage flywheel and a power supply grid; the main power supply branch is connected to a power supply grid through a grid-side converter, and is connected with a magnetic suspension energy storage flywheel through a machine-side converter; a direct current bus is formed between the grid-side converter and the machine-side converter;
a standby power supply branch is arranged and connected between the magnetic suspension energy storage flywheel and a standby power grid; the standby power supply branch transmits the power of the standby power grid to the magnetic suspension energy storage flywheel through a power supply device;
supplying power to the magnetic suspension energy storage flywheel through the main power supply branch; when the main power supply branch is powered off, the standby power supply branch supplies power to key equipment of the magnetic suspension energy storage flywheel, and the power failure fault is eliminated.
2. A method as claimed in claim 1, characterized in that the operating mode of the machine-side converter is a power mode or a voltage mode; wherein, the first and the second end of the pipe are connected with each other,
the power mode is constant power input and output and is used for controlling the charging and discharging power of the magnetic suspension energy storage flywheel, and the grid-side converter is used for stabilizing the voltage of a direct-current bus at the moment;
the voltage mode is used for stabilizing the voltage of the direct current bus;
when the power supply grid is powered off, the machine side converter operates in a voltage mode to ensure the voltage of the direct current bus to be stable, and power is supplied through the power module of the magnetic suspension energy storage flywheel.
3. A power supply method for a magnetic levitation energy storage flywheel as recited in claim 2, wherein the backup power grid is powered using utility power or by a high voltage station power and a station transformer; the station power utilization or commercial power provides 380VAC alternating current, and the 380VAC alternating current is transmitted to the power module so as to supply power to the machine side converter and the magnetic suspension energy storage flywheel.
4. A method of supplying power to a magnetic levitation energy storage flywheel as recited in claim 3 wherein the station is connected to the high voltage side of the power plant by the primary side of a transformer and the secondary side is a 380V three phase four wire power supply.
5. A power supply method for a magnetic suspension energy storage flywheel as claimed in claim 1, characterized in that the magnetic suspension energy storage flywheel employs separate power supply schemes of control power and power; wherein the content of the first and second substances,
the power electricity and the control electricity are obtained by taking electricity from a direct current bus through a DCDC and an ACDC on an alternating current side in a double-circuit mode and then connecting the electricity in parallel through a diode; two redundancies of power electricity and control electricity are uploaded to a main control monitor through a voltage sensor, and any redundancy output fault can be alarmed to be maintained and replaced.
6. The power supply method for the magnetic suspension energy storage flywheel as claimed in claim 1, characterized in that the ac power supply of the machine side converter, the flywheel heat dissipation, the vacuum pump and the brake resistor heat dissipation is provided by dual redundancy of the dc bus of the main power supply branch and the ac power of the backup power supply branch.
7. A power supply method for a magnetic suspension energy storage flywheel according to claim 5, characterized in that, the AC load power supply adopts a DCAC inverter, the DC side of the DCAC inverter is connected to the DC bus, and an AC bypass is provided to prevent the power supply interruption caused by the failure of the DCAC inverter; when the output of the DCAC inverter is normal, the AC output adopts the inverter to supply power, and when the output of the DCAC inverter is abnormal, the bypass power supply is automatically switched.
8. A power supply device for a magnetically levitated energy storage flywheel, comprising:
the main power supply module is used for setting a main power supply branch and is connected between the magnetic suspension energy storage flywheel and a power supply grid; the main power supply branch is connected to a power supply grid through a grid-side converter, and is connected with a magnetic suspension energy storage flywheel through a machine-side converter; a direct current bus is formed between the grid-side converter and the machine-side converter;
the standby power supply module is used for setting a standby power supply branch and is connected between the magnetic suspension energy storage flywheel and a standby power grid; the standby power supply branch transmits the power of the standby power grid to the magnetic suspension energy storage flywheel through a power supply device;
the power supply control module is used for supplying power to the magnetic suspension energy storage flywheel through the main power supply branch; when the main power supply branch is powered off, the standby power supply branch supplies power to key equipment of the magnetic suspension energy storage flywheel, and the power failure fault is eliminated.
9. An electronic device, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the steps of the method of any one of claims 1-7.
10. A non-transitory computer readable storage medium having stored thereon computer instructions for causing the computer to perform the steps of the method according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211256806.8A CN115333226B (en) | 2022-10-14 | 2022-10-14 | Power supply method and equipment for magnetic suspension energy storage flywheel |
Applications Claiming Priority (1)
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| US20030102718A1 (en) * | 2001-11-30 | 2003-06-05 | Hockney Richard L. | Multiple flywheel energy storage system |
| CN107579594A (en) * | 2017-09-28 | 2018-01-12 | 北京泓慧国际能源技术发展有限公司 | A kind of magnetically levitated flywheel energy storage ups system integrates application process |
| CN109066964A (en) * | 2018-08-29 | 2018-12-21 | 微控物理储能研究开发（深圳）有限公司 | Flywheel energy storage and the double transformation UPS integrated systems, control method of online high frequency |
| CN109936215A (en) * | 2019-03-27 | 2019-06-25 | 沈阳微控新能源技术有限公司 | A kind of uninterruptible power system of energy storage device of magnetic suspension flywheel |
| CN111614111A (en) * | 2020-05-26 | 2020-09-01 | 华驰动能(北京)科技有限公司 | Undisturbed switching control method for magnetic suspension energy storage flywheel charging and discharging control system |
| CN112803453A (en) * | 2021-03-29 | 2021-05-14 | 沈阳微控新能源技术有限公司 | Flywheel energy storage system, control method of flywheel energy storage system and storage medium |
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| US20030102718A1 (en) * | 2001-11-30 | 2003-06-05 | Hockney Richard L. | Multiple flywheel energy storage system |
| CN107579594A (en) * | 2017-09-28 | 2018-01-12 | 北京泓慧国际能源技术发展有限公司 | A kind of magnetically levitated flywheel energy storage ups system integrates application process |
| CN109066964A (en) * | 2018-08-29 | 2018-12-21 | 微控物理储能研究开发（深圳）有限公司 | Flywheel energy storage and the double transformation UPS integrated systems, control method of online high frequency |
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| CN111614111A (en) * | 2020-05-26 | 2020-09-01 | 华驰动能(北京)科技有限公司 | Undisturbed switching control method for magnetic suspension energy storage flywheel charging and discharging control system |
| CN112803453A (en) * | 2021-03-29 | 2021-05-14 | 沈阳微控新能源技术有限公司 | Flywheel energy storage system, control method of flywheel energy storage system and storage medium |
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| CN115333226B (en) | 2023-01-17 |
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