CN116979573A - Power management method of intelligent flywheel energy storage array - Google Patents
Power management method of intelligent flywheel energy storage array Download PDFInfo
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- CN116979573A CN116979573A CN202310940487.0A CN202310940487A CN116979573A CN 116979573 A CN116979573 A CN 116979573A CN 202310940487 A CN202310940487 A CN 202310940487A CN 116979573 A CN116979573 A CN 116979573A
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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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- 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
Abstract
The invention discloses a power management method of an intelligent flywheel energy storage array, which comprises the steps of obtaining a charge and discharge power instruction sent by an upper computer; acquiring the working state of each flywheel energy storage unit in the flywheel energy storage array; determining a power distribution range and a power distribution priority for performing power distribution management on each flywheel energy storage unit according to a charge and discharge power instruction sent by an upper computer and the working state of each flywheel energy storage unit; and controlling the charge and discharge of each flywheel energy storage unit according to the determined power distribution range and the determined power distribution priority. According to the invention, the communication controller receives the upper computer instruction and the working running state of each flywheel energy storage unit, and automatically selects a proper power management strategy and a fault redundancy power management strategy, so that the efficiency and the service life of the flywheel energy storage array can be obviously improved.
Description
Technical Field
The invention relates to the technical field of flywheel energy storage, in particular to a power management method of an intelligent flywheel energy storage array.
Background
The flywheel energy storage technology has the advantages of quick dynamic response, high efficiency, no pollution, high safety, long service life and the like, so that the flywheel energy storage technology has wide engineering application scenes in the fields of traffic tracks, emergency power supplies, grid frequency modulation, new energy power station grid connection and the like. Because the flywheel single body has smaller capacity and is difficult to meet the actual application requirement of high-power engineering at present due to the limitations of technology and materials, a plurality of flywheel units are connected in parallel to form a flywheel array for expanding the capacity and putting the flywheel array into operation, so that the flywheel single body is a good choice.
In practical application, along with different field working conditions, the charge and discharge power of the flywheel energy storage array is required to be different. The currently prevailing control strategies are: all flywheel units in the array can enter a charge-discharge running state no matter the charge-discharge power. This control strategy not only affects the efficiency of the flywheel energy storage array, but also has a certain impact on the life of each flywheel unit.
When a certain flywheel unit of the flywheel energy storage array fails, the current conventional practice is that: all units of the flywheel energy storage array are stopped, and after the fault unit is manually cut off, the rest flywheel units are restarted. This approach does not meet many of the requirements of intelligent applications.
In summary, from the perspective of improving efficiency and service life of the flywheel energy storage array and optimizing the fault solution of the flywheel energy storage array, the flywheel energy storage array still has a space for further optimization in terms of power management strategy.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a power management method of an intelligent flywheel energy storage array.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the power management method of the intelligent flywheel energy storage array comprises the following steps:
acquiring a charge and discharge power instruction sent by an upper computer;
acquiring the working state of each flywheel energy storage unit in the flywheel energy storage array;
determining a power distribution range and a power distribution priority for performing power distribution management on each flywheel energy storage unit according to a charge and discharge power instruction sent by an upper computer and the working state of each flywheel energy storage unit;
and controlling the charge and discharge of each flywheel energy storage unit according to the determined power distribution range and the determined power distribution priority.
Further, the determining the power distribution range and the power distribution priority for performing power distribution management on each flywheel energy storage unit according to the charge and discharge power command sent by the upper computer and the working state of each flywheel energy storage unit specifically includes the following steps:
determining the quantity of the flywheel energy storage units entering the charge and discharge running states according to the charge and discharge power instructions sent by the upper computer and the rated capacity of each flywheel energy storage unit;
determining the charge and discharge frequency sequence of the flywheel energy storage units according to the charge and discharge frequency of each flywheel energy storage unit in ascending order;
according to the determined quantity of the flywheel energy storage units entering the charge and discharge running states, a corresponding quantity of flywheel energy storage units are selected from the series of charge and discharge frequency sequences of the flywheel energy storage units to generate a charge and discharge sequence, and according to the rest flywheel energy storage units in the charge and discharge frequency sequences, a standby sequence is generated.
Further, the determining the power distribution range and the power distribution priority for performing power distribution management on each flywheel energy storage unit according to the charge and discharge power command sent by the upper computer and the working state of each flywheel energy storage unit further comprises the following steps:
judging whether a charge and discharge power instruction sent by an upper computer changes or not;
if so, re-determining a power distribution range and a power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the change quantity of the charge and discharge power;
otherwise, the processing is not performed.
Further, the redetermining the power distribution range and the power distribution priority for performing power distribution management on each flywheel energy storage unit according to the variation of the charge and discharge power specifically includes:
if the charge and discharge power sent by the upper computer is increased, determining the increase amount of the flywheel energy storage units entering the charge and discharge running state according to the increase amount of the charge and discharge power, and adding the flywheel energy storage units with the increase amount from the row top selection of the standby sequence to the row tail of the charge and discharge sequence to generate a new charge and discharge sequence and a new standby sequence.
Further, the redetermining the power distribution range and the power distribution priority for performing power distribution management on each flywheel energy storage unit according to the variation of the charge and discharge power specifically includes:
if the charge and discharge power sent by the upper computer is reduced, determining the reduction amount of the flywheel energy storage units entering the charge and discharge running state according to the reduction amount of the charge and discharge power, selecting the flywheel energy storage units with the reduction amount from the tail of the charge and discharge sequence, adding the flywheel energy storage units into the head of the standby sequence, and generating a new charge and discharge sequence and a new standby sequence.
Further, the determining the power distribution range and the power distribution priority for performing power distribution management on each flywheel energy storage unit according to the charge and discharge power command sent by the upper computer and the working state of each flywheel energy storage unit further comprises the following steps:
judging whether all flywheel energy storage units enter a charging and discharging state;
if so, respectively selecting flywheel energy storage units at the head and tail of the row from the charge and discharge sequence, and comparing whether the difference value of the charge and discharge times of the two selected flywheel energy storage units is larger than a set threshold value; if yes, adding the flywheel energy storage unit at the tail of the train into the train head of the standby sequence to generate a new charge-discharge sequence and a new standby sequence; otherwise, the processing is not performed;
otherwise, the processing is not performed.
Further, the determining the power distribution range and the power distribution priority for performing power distribution management on each flywheel energy storage unit according to the charge and discharge power command sent by the upper computer and the working state of each flywheel energy storage unit further comprises the following steps:
judging whether the working state of each flywheel energy storage unit has a fault state or not;
if so, re-determining a power distribution range and a power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the working state of the flywheel energy storage unit which normally operates;
otherwise, the processing is not performed.
Further, the re-determining the power distribution range and the power distribution priority for performing power distribution management on each flywheel energy storage unit according to the working state of the flywheel energy storage unit in normal operation specifically includes the following steps:
judging whether all flywheel energy storage units which normally operate enter a charging and discharging state;
if yes, carrying out power reduction charging and discharging on the flywheel energy storage units according to the quantity of the flywheel energy storage units entering the charging and discharging states;
otherwise, adding the tail of the charge-discharge sequence from the flywheel energy storage units with the first selected fault number from the sequence of the standby sequence according to the fault number of the flywheel energy storage units with the fault state, and generating a new charge-discharge sequence and a new standby sequence.
The invention has the following beneficial effects:
according to the invention, the communication controller receives the upper computer instruction and the working running state of each flywheel energy storage unit, and automatically selects a proper power management strategy and a fault redundancy power management strategy, so that the efficiency and the service life of the flywheel energy storage array can be obviously improved.
Drawings
FIG. 1 is a flow chart of a method for power management of an intelligent flywheel energy storage array according to the present invention;
FIG. 2 is a schematic diagram of a flywheel energy storage array according to the present invention;
FIG. 3 is a flow chart of the power allocation management strategy according to the present invention;
FIG. 4 is a flow chart of the fault redundant power management strategy of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a power management method for an intelligent flywheel energy storage array, including the following steps:
s1, acquiring a charge and discharge power instruction sent by an upper computer;
s2, acquiring working states of all flywheel energy storage units in the flywheel energy storage array;
s3, determining a power distribution range and a power distribution priority for performing power distribution management on each flywheel energy storage unit according to the charge and discharge power instruction sent by the upper computer and the working state of each flywheel energy storage unit;
and S4, performing charge and discharge control on each flywheel energy storage unit according to the determined power distribution range and the determined power distribution priority.
In an alternative embodiment of the present invention, taking four flywheel energy storage units as an example, a flywheel energy storage array is formed, and a topology diagram thereof is shown in fig. 2. In the embodiment, a communication controller is added to the flywheel energy storage array, and the communication controller communicates with an upper computer and a flywheel unit through optical fiber cables. The communication controller is used for receiving the upper computer instruction and the states (including but not limited to fault states, running states and the like) of each flywheel unit, and performing an intelligent power management strategy according to the received information.
In an optional embodiment of the present invention, the determining a power distribution range and a power distribution priority for performing power distribution management on each flywheel energy storage unit according to a charge and discharge power instruction sent by an upper computer and a working state of each flywheel energy storage unit specifically includes the following steps:
determining the quantity of the flywheel energy storage units entering the charge and discharge running states according to the charge and discharge power instructions sent by the upper computer and the rated capacity of each flywheel energy storage unit;
determining the charge and discharge frequency sequence of the flywheel energy storage units according to the charge and discharge frequency of each flywheel energy storage unit in ascending order;
according to the determined quantity of the flywheel energy storage units entering the charge and discharge running states, a corresponding quantity of flywheel energy storage units are selected from the series of charge and discharge frequency sequences of the flywheel energy storage units to generate a charge and discharge sequence, and according to the rest flywheel energy storage units in the charge and discharge frequency sequences, a standby sequence is generated.
Specifically, the communication controller reads that the charge and discharge times of all flywheel energy storage units are Cnt1 to Cnt4, respectively, and Cnt1< Cnt2< Cnt3< Cnt4 is satisfied.
And receiving a charge and discharge Power instruction Power_ref sent by the upper computer, and determining the number Num of the flywheel energy storage units entering a charge and discharge operation state according to the rated capacity Power_rate of the flywheel energy storage units, wherein the rest flywheel energy storage units are in a standby operation state.
Num=power_ref/power_rate, and rounded up.
And sequentially and evenly distributing the charge and discharge power instructions issued by the upper computer to the flywheel energy storage units with fewer charge and discharge times to charge and discharge. If Num is 2, the flywheel energy storage units of Cnt1 to Cnt2 enter a charge-discharge operation state, and the flywheel energy storage units of Cnt3 to Cnt4 are in a standby operation state.
In an optional embodiment of the present invention, the determining a power distribution range and a power distribution priority for performing power distribution management on each flywheel energy storage unit according to the charge and discharge power instruction sent by the upper computer and the working state of each flywheel energy storage unit further includes the following steps:
judging whether a charge and discharge power instruction sent by an upper computer changes or not;
if so, re-determining a power distribution range and a power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the change quantity of the charge and discharge power;
otherwise, the processing is not performed.
The method for redetermining the power distribution range and the power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the change amount of the charge and discharge power specifically comprises the following steps:
if the charge and discharge power sent by the upper computer is increased, determining the increase amount of the flywheel energy storage units entering the charge and discharge running state according to the increase amount of the charge and discharge power, and adding the flywheel energy storage units with the increase amount from the row top selection of the standby sequence to the row tail of the charge and discharge sequence to generate a new charge and discharge sequence and a new standby sequence.
The method for redetermining the power distribution range and the power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the change amount of the charge and discharge power specifically comprises the following steps:
if the charge and discharge power sent by the upper computer is reduced, determining the reduction amount of the flywheel energy storage units entering the charge and discharge running state according to the reduction amount of the charge and discharge power, selecting the flywheel energy storage units with the reduction amount from the tail of the charge and discharge sequence, adding the flywheel energy storage units into the head of the standby sequence, and generating a new charge and discharge sequence and a new standby sequence.
Specifically, if the charge and discharge power instruction issued by the upper computer changes, the number of flywheel energy storage units required to enter a charge and discharge running state changes; if the number Num of the flywheel energy storage units which need to enter the charge and discharge operation state is increased to 3, the flywheel energy storage units of Cnt3 enter the charge and discharge operation state preferentially, and the flywheel energy storage units of Cnt4 are still in the standby operation state; if the number Num of the flywheel energy storage units required to enter the charge and discharge operation state is reduced to 1, the flywheel energy storage units of Cnt2 enter the standby operation state preferentially, and the flywheel energy storage units of Cnt1 are still in the charge and discharge operation state.
In an optional embodiment of the present invention, the determining a power distribution range and a power distribution priority for performing power distribution management on each flywheel energy storage unit according to the charge and discharge power instruction sent by the upper computer and the working state of each flywheel energy storage unit further includes the following steps:
judging whether all flywheel energy storage units enter a charging and discharging state;
if so, respectively selecting flywheel energy storage units at the head and tail of the row from the charge and discharge sequence, and comparing whether the difference value of the charge and discharge times of the two selected flywheel energy storage units is larger than a set threshold value; if yes, adding the flywheel energy storage unit at the tail of the train into the train head of the standby sequence to generate a new charge-discharge sequence and a new standby sequence; otherwise, the processing is not performed;
otherwise, the processing is not performed.
Specifically, when all the flywheel energy storage units enter a charge and discharge state, the communication controller receives the charge and discharge times of each flywheel energy storage unit, and if the flywheel energy storage unit with the least charge and discharge times differs from the flywheel energy storage unit with the most charge and discharge times by more than 100 times, the flywheel energy storage unit with the most charge and discharge times enters a standby state, and the flywheel energy storage unit with the least charge and discharge times enters a charge and discharge running state. If the flywheel energy storage units of Cnt1 to Cnt2 enter a charge-discharge operation state, the flywheel energy storage units of Cnt3 to Cnt4 are in a standby operation state, and (Cnt 1-Cnt 3) >100, cnt1> Cnt2> Cnt4> Cnt3, the flywheel energy storage unit of Cnt1 enters a standby operation state, and the flywheel energy storage unit of Cnt3 enters a charge-discharge operation state.
The flow chart of the intelligent power allocation management strategy of the communication controller provided by the embodiment is shown in fig. 3. The communication controller receives the upper computer instruction and the working operation state of each flywheel unit, and automatically selects a proper power management strategy. According to the invention, the power management strategy adjustment is carried out on the flywheel units which are put into operation by counting the charge and discharge times of each flywheel unit and the charge and discharge instructions of the upper computer, so that the whole service life of the flywheel energy storage array can be prolonged, and the charge and discharge power of the whole flywheel can not be forced to be reduced because part of flywheel units are used for a long time.
In an optional embodiment of the present invention, the determining a power distribution range and a power distribution priority for performing power distribution management on each flywheel energy storage unit according to the charge and discharge power instruction sent by the upper computer and the working state of each flywheel energy storage unit further includes the following steps:
judging whether the working state of each flywheel energy storage unit has a fault state or not;
if so, re-determining a power distribution range and a power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the working state of the flywheel energy storage unit which normally operates;
otherwise, the processing is not performed.
The method for re-determining the power distribution range and the power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the working state of the flywheel energy storage unit which normally operates specifically comprises the following steps:
judging whether all flywheel energy storage units which normally operate enter a charging and discharging state;
if yes, carrying out power reduction charging and discharging on the flywheel energy storage units according to the quantity of the flywheel energy storage units entering the charging and discharging states;
otherwise, adding the tail of the charge-discharge sequence from the flywheel energy storage units with the first selected fault number from the sequence of the standby sequence according to the fault number of the flywheel energy storage units with the fault state, and generating a new charge-discharge sequence and a new standby sequence.
Specifically, after the communication controller receives a fault state of a certain flywheel energy storage unit, a fault redundant power management scheme is determined by combining operation states of other flywheel energy storage units.
If the flywheel energy storage units in the flywheel energy storage array are in a standby running state, after the communication controller receives a fault of one flywheel energy storage unit, the flywheel energy storage units with fewer charge and discharge times are sequentially made to enter a charge and discharge running state in a shorter time. If the flywheel energy storage units of Cnt1 to Cnt2 are in a charge and discharge running state, the flywheel energy storage units of Cnt3 to Cnt4 are in a standby running state, and when the communication controller receives the fault state of the flywheel energy storage unit of Cnt1, the flywheel energy storage unit of Cnt3 is rapidly put into the charge and discharge running state, so that the total power requirement of the charge and discharge of the system is met in real time.
If all the flywheel energy storage units in the flywheel energy storage array are in a charging and discharging operation state, after the communication controller receives a fault of a certain flywheel energy storage unit, the communication controller performs power-reducing charging and discharging according to the number of the flywheel energy storage units which can normally operate in the flywheel energy storage array. If flywheel energy storage units of Cnt1 to Cnt4 are in a charge and discharge operation state, when the communication controller receives the fault state of the flywheel energy storage unit of Cnt1, the flywheel energy storage units of Cnt2 to Cnt4 perform a power-down charge and discharge operation in a full-power state capable of being output.
The flow chart of the intelligent fault redundant power management strategy of the communication controller provided by the embodiment is shown in fig. 4. When a certain flywheel unit fails, the power management strategy does not need to stop the flywheel energy storage array completely, can automatically cut off the failed unit in a short time under the state of the array operation, and decides whether the unit in standby enters a charge and discharge operation state or a power reduction operation state according to the states of other units.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Those of ordinary skill in the art will recognize that the embodiments described herein are for the purpose of aiding the reader in understanding the principles of the present invention and should be understood that the scope of the invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific modifications and combinations from the teachings of the present disclosure without departing from the spirit thereof, and such modifications and combinations remain within the scope of the present disclosure.
Claims (8)
1. The power management method of the intelligent flywheel energy storage array is characterized by comprising the following steps of:
acquiring a charge and discharge power instruction sent by an upper computer;
acquiring the working state of each flywheel energy storage unit in the flywheel energy storage array;
determining a power distribution range and a power distribution priority for performing power distribution management on each flywheel energy storage unit according to a charge and discharge power instruction sent by an upper computer and the working state of each flywheel energy storage unit;
and controlling the charge and discharge of each flywheel energy storage unit according to the determined power distribution range and the determined power distribution priority.
2. The method for power management of an intelligent flywheel energy storage array according to claim 1, wherein the determining the power distribution range and the power distribution priority for power distribution management of each flywheel energy storage unit according to the charge and discharge power command sent by the host computer and the working state of each flywheel energy storage unit specifically comprises the following steps:
determining the quantity of the flywheel energy storage units entering the charge and discharge running states according to the charge and discharge power instructions sent by the upper computer and the rated capacity of each flywheel energy storage unit;
determining the charge and discharge frequency sequence of the flywheel energy storage units according to the charge and discharge frequency of each flywheel energy storage unit in ascending order;
according to the determined quantity of the flywheel energy storage units entering the charge and discharge running states, a corresponding quantity of flywheel energy storage units are selected from the series of charge and discharge frequency sequences of the flywheel energy storage units to generate a charge and discharge sequence, and according to the rest flywheel energy storage units in the charge and discharge frequency sequences, a standby sequence is generated.
3. The method for power management of an intelligent flywheel energy storage array according to claim 2, wherein the determining the power distribution range and the power distribution priority for power distribution management of each flywheel energy storage unit according to the charge and discharge power command sent by the host computer and the working state of each flywheel energy storage unit further comprises the following steps:
judging whether a charge and discharge power instruction sent by an upper computer changes or not;
if so, re-determining a power distribution range and a power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the change quantity of the charge and discharge power;
otherwise, the processing is not performed.
4. The method for power management of an intelligent flywheel energy storage array according to claim 3, wherein the redetermining the power distribution range and the power distribution priority for power distribution management of each flywheel energy storage unit according to the variation of the charge and discharge power specifically comprises:
if the charge and discharge power sent by the upper computer is increased, determining the increase amount of the flywheel energy storage units entering the charge and discharge running state according to the increase amount of the charge and discharge power, and adding the flywheel energy storage units with the increase amount from the row top selection of the standby sequence to the row tail of the charge and discharge sequence to generate a new charge and discharge sequence and a new standby sequence.
5. The method for power management of an intelligent flywheel energy storage array according to claim 3, wherein the redetermining the power distribution range and the power distribution priority for power distribution management of each flywheel energy storage unit according to the variation of the charge and discharge power specifically comprises:
if the charge and discharge power sent by the upper computer is reduced, determining the reduction amount of the flywheel energy storage units entering the charge and discharge running state according to the reduction amount of the charge and discharge power, selecting the flywheel energy storage units with the reduction amount from the tail of the charge and discharge sequence, adding the flywheel energy storage units into the head of the standby sequence, and generating a new charge and discharge sequence and a new standby sequence.
6. The method for power management of an intelligent flywheel energy storage array according to claim 2, wherein the determining the power distribution range and the power distribution priority for power distribution management of each flywheel energy storage unit according to the charge and discharge power command sent by the host computer and the working state of each flywheel energy storage unit further comprises the following steps:
judging whether all flywheel energy storage units enter a charging and discharging state;
if so, respectively selecting flywheel energy storage units at the head and tail of the row from the charge and discharge sequence, and comparing whether the difference value of the charge and discharge times of the two selected flywheel energy storage units is larger than a set threshold value; if yes, adding the flywheel energy storage unit at the tail of the train into the train head of the standby sequence to generate a new charge-discharge sequence and a new standby sequence; otherwise, the processing is not performed;
otherwise, the processing is not performed.
7. The method for power management of an intelligent flywheel energy storage array according to claim 2, wherein the determining the power distribution range and the power distribution priority for power distribution management of each flywheel energy storage unit according to the charge and discharge power command sent by the host computer and the working state of each flywheel energy storage unit further comprises the following steps:
judging whether the working state of each flywheel energy storage unit has a fault state or not;
if so, re-determining a power distribution range and a power distribution priority for carrying out power distribution management on each flywheel energy storage unit according to the working state of the flywheel energy storage unit which normally operates;
otherwise, the processing is not performed.
8. The method for power management of an intelligent flywheel energy storage array according to claim 7, wherein the redetermining the power distribution range and the power distribution priority for power distribution management of each flywheel energy storage unit according to the working state of the flywheel energy storage unit in normal operation specifically comprises the following steps:
judging whether all flywheel energy storage units which normally operate enter a charging and discharging state;
if yes, carrying out power reduction charging and discharging on the flywheel energy storage units according to the quantity of the flywheel energy storage units entering the charging and discharging states;
otherwise, adding the tail of the charge-discharge sequence from the flywheel energy storage units with the first selected fault number from the sequence of the standby sequence according to the fault number of the flywheel energy storage units with the fault state, and generating a new charge-discharge sequence and a new standby sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310940487.0A CN116979573A (en) | 2023-07-28 | 2023-07-28 | Power management method of intelligent flywheel energy storage array |
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| CN202310940487.0A CN116979573A (en) | 2023-07-28 | 2023-07-28 | Power management method of intelligent flywheel energy storage array |
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| CN202310940487.0A Pending CN116979573A (en) | 2023-07-28 | 2023-07-28 | Power management method of intelligent flywheel energy storage array |
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2023
- 2023-07-28 CN CN202310940487.0A patent/CN116979573A/en active Pending
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