CN115833189A - Charging and discharging control method, device and equipment of flywheel energy storage system and storage medium - Google Patents
Charging and discharging control method, device and equipment of flywheel energy storage system and storage medium Download PDFInfo
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Abstract
The invention provides a charging and discharging control method, a device, equipment and a storage medium of a flywheel energy storage system, wherein the flywheel energy storage system comprises a plurality of flywheel energy storage systems which are arranged in parallel, and the method comprises the following steps: acquiring a real-time SOC value of each flywheel energy storage system and a real-time network voltage of the flywheel energy storage system in real time; when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different and the real-time network voltage is greater than the preset idle network voltage, controlling the target flywheel energy storage system to charge according to a first charging voltage threshold; when the fact that the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are different and the real-time network voltage is smaller than the preset idle network voltage is detected, the target flywheel energy storage system is controlled to discharge according to the first discharge voltage threshold. The invention can adjust the charging/discharging voltage threshold of the flywheel energy storage system in real time and dynamically match with the real-time running condition of the line.
Description
Technical Field
The invention relates to the technical field of flywheel energy storage, in particular to a charging and discharging control method, a charging and discharging control device, charging and discharging control equipment and a storage medium of a flywheel energy storage system.
Background
The flywheel energy storage system is an energy storage device for converting mechanical energy and electrical energy, the system stores energy by adopting a physical method, and realizes the mutual conversion and storage between the electrical energy and the mechanical kinetic energy of a flywheel running at high speed through an electric/power generation mutual-inverse type bidirectional motor.
The flywheel energy storage system is used as a regeneration device and is widely applied to a full-line traction station in the field of urban rail transit. The urban rail transit needs frequent starting and braking in the running process, when braking, the motor works in a power generation state, generated electric energy returns to the flywheel energy storage system and is stored in the flywheel rotor rotating at high speed in the form of mechanical energy, and when the rotor reaches a rated rotating speed, the speed is not increased any more. When the traction is started, the flywheel energy storage system can release energy to supply the train for traction.
Because rail transit belongs to dynamic flow, train departure intervals, vehicle density and line network voltage all change at any moment, at present, most adopt the strategy of mean value adjustment, can't realize that the charging/discharging voltage threshold of each flywheel energy storage system in the flywheel energy storage system matches with the real-time running condition of line dynamically. Therefore, a method for dynamically adjusting the charging/discharging voltage threshold of each flywheel energy storage system is needed.
Disclosure of Invention
The embodiment of the invention provides a charging and discharging control method, a charging and discharging control device, charging and discharging control equipment and a storage medium of a flywheel energy storage system, and aims to solve the problem that the charging/discharging voltage threshold of the existing flywheel energy storage system cannot be dynamically matched with the real-time running condition of a line.
In a first aspect, an embodiment of the present invention provides a charge and discharge control method for a flywheel energy storage system, where the flywheel energy storage system includes a plurality of flywheel energy storage systems connected in parallel, and the charge and discharge control method includes:
acquiring a real-time SOC value of each flywheel energy storage system and a real-time network voltage of the flywheel energy storage system in real time;
when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different, and the real-time network voltage is greater than the preset idle network voltage, controlling a target flywheel energy storage system to charge according to a first charging voltage threshold, wherein the target flywheel energy storage system is any one of the flywheel energy storage systems;
when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different, and the real-time network voltage is smaller than the preset idle network voltage, controlling the target flywheel energy storage system to discharge according to a first discharge voltage threshold; the first charging voltage threshold and the first discharging voltage threshold are obtained through calculation according to a real-time SOC value, an initial charging voltage threshold or an initial discharging voltage threshold of the target flywheel energy storage system.
In a possible implementation manner, when it is detected that all flywheel energy storage systems in only the mth traction station in the flywheel energy storage systems do not work normally, controlling the sum of the real-time powers of all flywheel energy storage systems in the (m + 1) th or (m-1) th traction station to work according to a first preset power;
each traction station at least comprises a flywheel energy storage system, and the mth traction station is the first traction station or the last traction station; the first preset power is the sum of the initial power of all flywheel energy storage systems in the mth traction station and the initial power of all flywheel energy storage systems in the m +1 traction stations, or the sum of the initial power of all flywheel energy storage systems in the mth traction station and the initial power of all flywheel energy storage systems in the m-1 traction stations when all flywheel energy storage systems in the flywheel energy storage systems work normally, and m is a positive integer.
In a possible implementation manner, when it is detected that only all flywheel energy storage systems in the nth traction station do not work normally in the flywheel energy storage systems, controlling the sum of the real-time working powers of all flywheel energy storage systems in the (n + 1) th traction station to work according to a second preset power, and controlling the sum of the real-time working powers of all flywheel energy storage systems in the (n-1) th traction station to work according to a third preset power;
each traction station at least comprises one flywheel energy storage system, the nth traction station is any one of the middle traction stations, and the second preset power is obtained by calculation according to the distance between the nth traction station and the n-1 st traction station, the distance between the n +1 th traction station and the n-1 th traction station, and the power when the flywheel energy storage systems in the n +1 th traction station and the nth traction station work normally; and the third preset power is calculated according to the distance between the nth traction station and the (n + 1) th traction station, the distance between the (n + 1) th traction station and the (n-1) th traction station and the power of the flywheel energy storage systems in the (n-1) th traction station and the n traction stations during normal operation.
In one possible implementation, the second predetermined power
Comprises the following steps:
third predetermined power
Comprises the following steps:
wherein ,
is the sum of the initial powers of all flywheel energy storage systems in the (n + 1) th traction station,
is the sum of the initial powers of all flywheel energy storage systems in the n-1 th traction station,
when all flywheel energy storage systems in the nth traction station work normally, the sum of the initial powers of all the flywheel energy storage systems in the nth traction station,
the distance between the (n + 1) th draw and the nth draw,
is the distance between the (n-1) th tow and the nth tow.
In a possible implementation manner, when it is detected that all flywheel energy storage systems in a plurality of middle tractors in the flywheel energy storage system do not work normally, the real-time power sum of the flywheel energy storage systems in other tractors is controlled to work according to the respective maximum power.
In one possible implementation, the first charging voltage threshold Δ Uct is:
△Uct= Ucsi+△Uci；
△Uci=△SOCi×Uci，Uci=Ucmax- Ucmin-△Ucsi，Ucsi=U0+△Ucsi；
△SOCi= SOCi-SOCav；
the method comprises the following steps that Ucsi is an initial charging voltage threshold value of the ith flywheel energy storage system, delta Uci is a real-time charging voltage offset value of the ith flywheel energy storage system, delta SOCi is an SOC difference value of the ith flywheel energy storage system, uci is a charging voltage offset value interval, ucmax and Ucmin are voltage values during charging according to maximum power or minimum power respectively, delta Ucsi is an initial charging voltage offset value of the ith flywheel energy storage system, U0 is preset idle load network voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOCav is an average value of real-time SOC values of all flywheel energy storage systems in the flywheel energy storage systems.
In one possible implementation, the first discharge voltage threshold Δ Udt is:
△Udt= Udsi+△Udi；
△Udi=△SOCi×Udi，Udi=Udmax- Udmin+△Udsi，Udsi= U0-△Udsi；
△SOCi= SOCi-SOCav；
the method comprises the following steps that Udsi is an initial discharge voltage threshold value of the ith flywheel energy storage system, delta Udi is a real-time discharge voltage offset value of the ith flywheel energy storage system, delta SOCi is an SOC difference value of the ith flywheel energy storage system, udi is a discharge voltage offset value interval, udmax and Udmin are voltage values during discharging according to maximum power or discharging according to minimum power respectively, delta Udsi is an initial discharge voltage offset value of the ith flywheel energy storage system, U0 is preset idle load network voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOCav is an average value of real-time SOC values of all flywheel energy storage systems in the flywheel energy storage systems.
In a second aspect, an embodiment of the present invention provides a charge and discharge control device for a flywheel energy storage system, where the flywheel energy storage system includes a plurality of flywheel energy storage systems connected in parallel, and the charge and discharge control device includes:
the acquisition module is used for acquiring the real-time SOC value of each flywheel energy storage system and the real-time network voltage of the flywheel energy storage system in real time;
the charging module is used for controlling a target flywheel energy storage system to charge according to a first charging voltage threshold when detecting that real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are different and real-time network voltage is greater than preset idle network voltage, wherein the target flywheel energy storage system is any one of the flywheel energy storage systems;
the discharging module is used for controlling the target flywheel energy storage system to discharge according to a first discharging voltage threshold when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different and the real-time network voltage is smaller than the preset idle network voltage; the first charging voltage threshold and the first discharging voltage threshold are obtained through calculation according to a real-time SOC value, an initial charging voltage threshold or an initial discharging voltage threshold of the target flywheel energy storage system.
In one possible implementation manner, the method further includes: the power adjusting module is used for controlling the sum of real-time power of all flywheel energy storage systems in the (m + 1) th or (m-1) th traction station to work according to first preset power when detecting that all flywheel energy storage systems in the m-th traction station in the flywheel energy storage systems do not work normally;
each traction station at least comprises a flywheel energy storage system, and the mth traction station is the first traction station or the last traction station; the first preset power is the sum of the initial power of all flywheel energy storage systems in the mth traction station and the initial power of all flywheel energy storage systems in the m +1 traction stations, or the sum of the initial power of all flywheel energy storage systems in the mth traction station and the initial power of all flywheel energy storage systems in the m-1 traction stations when all flywheel energy storage systems in the flywheel energy storage systems work normally, and m is a positive integer.
In one possible implementation manner, the method further includes: the power adjusting module is used for controlling the sum of the real-time working powers of all flywheel energy storage systems in the (n + 1) th traction station to work according to second preset power and controlling the sum of the real-time working powers of all flywheel energy storage systems in the (n-1) th traction station to work according to third preset power when the situation that only all flywheel energy storage systems in the nth traction station in the flywheel energy storage systems do not work normally is detected;
each traction station at least comprises one flywheel energy storage system, the nth traction station is any one of the middle traction stations, and the second preset power is obtained by calculation according to the distance between the nth traction station and the n-1 st traction station, the distance between the n +1 th traction station and the n-1 th traction station, and the power when the flywheel energy storage systems in the n +1 th traction station and the nth traction station work normally; and the third preset power is calculated according to the distance between the nth traction station and the (n + 1) th traction station, the distance between the (n + 1) th traction station and the (n-1) th traction station and the power of the flywheel energy storage systems in the (n-1) th traction station and the n traction stations during normal operation.
In one possible implementation, the second predetermined power
Comprises the following steps:
third predetermined power
Comprises the following steps:
wherein ,
is the sum of the initial powers of all flywheel energy storage systems in the (n + 1) th traction station,
is the sum of the initial powers of all flywheel energy storage systems in the n-1 th traction station,
when all flywheel energy storage systems in the nth traction station work normally, the initial power of all flywheel energy storage systems in the nth traction station is the sum of the initial powers,
the distance between the n +1 st tow and the n-th tow,
is the distance between the (n-1) th tow and the nth tow.
In one possible implementation manner, the method further includes: and the power regulating module is used for controlling the real-time power sum of the flywheel energy storage systems in other traction stations to work according to the respective maximum power when detecting that all the flywheel energy storage systems in a plurality of middle traction stations in the flywheel energy storage systems do not work normally.
In one possible implementation, the first charging voltage threshold Δ Uct is:
△Uct= Ucsi+△Uci；
△Uci=△SOCi×Uci，Uci=Ucmax- Ucmin-△Ucsi，Ucsi=U0+△Ucsi；
△SOCi= SOCi-SOCav；
the method comprises the following steps that Ucsi is an initial charging voltage threshold value of the ith flywheel energy storage system, delta Uci is a real-time charging voltage offset value of the ith flywheel energy storage system, delta SOCi is an SOC difference value of the ith flywheel energy storage system, uci is a charging voltage offset value interval, ucmax and Ucmin are voltage values during charging according to maximum power or minimum power respectively, delta Ucsi is an initial charging voltage offset value of the ith flywheel energy storage system, U0 is preset idle load network voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOCav is an average value of real-time SOC values of all flywheel energy storage systems in the flywheel energy storage systems.
In one possible implementation, the first discharge voltage threshold Δ Udt is:
△Udt= Udsi+△Udi；
△Udi=△SOCi×Udi，Udi=Udmax- Udmin+△Udsi，Udsi= U0-△Udsi；
△SOCi= SOCi-SOCav；
the method comprises the following steps that Udsi is an initial discharge voltage threshold value of the ith flywheel energy storage system, delta Udi is a real-time discharge voltage offset value of the ith flywheel energy storage system, delta SOCi is an SOC difference value of the ith flywheel energy storage system, udi is a discharge voltage offset value interval, udmax and Udmin are voltage values during discharging according to maximum power or discharging according to minimum power respectively, delta Udsi is an initial discharge voltage offset value of the ith flywheel energy storage system, U0 is preset idle load network voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOCav is an average value of real-time SOC values of all flywheel energy storage systems in the flywheel energy storage systems.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method according to the first aspect or any possible implementation manner of the first aspect when executing the computer program.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored, and the computer program, when executed by a processor, implements the steps of the method according to the first aspect or any one of the possible implementation manners of the first aspect.
The embodiment of the invention provides a charging and discharging control method, a charging and discharging control device, charging and discharging control equipment and a storage medium of a flywheel energy storage system. Then, when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different and the real-time network voltage is greater than the preset idle network voltage, controlling the target flywheel energy storage system to charge according to a first charging voltage threshold; and when the real-time network voltage is smaller than the preset idle network voltage, controlling the target flywheel energy storage system to discharge according to the first discharge voltage threshold value. Therefore, the real-time charging/discharging voltage threshold value of each flywheel energy storage system is adjusted in real time through the acquired real-time SOC value, the initial charging voltage threshold value or the initial discharging voltage threshold value of each flywheel energy storage system, the charging and discharging effect of each flywheel energy storage system is optimized, and the whole flywheel energy storage system is more stable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating an implementation of a charging and discharging control method for a flywheel energy storage system according to an embodiment of the present invention;
FIG. 2 is a schematic voltage-power curve of a flywheel energy storage system according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a traction system provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a charge and discharge control device of a flywheel energy storage system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an electronic device provided in an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is made by way of specific embodiments with reference to the accompanying drawings.
As described in the background art, urban rail transit is favored by various large cities due to its high running speed, large passenger capacity and high safety, and becomes a popular travel choice. However, the method also brings huge power consumption, and how to reduce the power consumption becomes a problem which needs to be solved urgently.
The regenerative braking energy of the rail transit can reach 20-40% of the traction energy, and one of effective means for reducing energy consumption when a flywheel energy storage system is installed to recover the regenerative braking energy of the train is provided. The flywheel energy storage system is used as a regeneration device and widely applied to a full-line traction station in the field of urban rail transit.
The flywheel energy storage system generally determines whether to perform charging and discharging actions of the energy storage system by monitoring changes of the real-time network voltage. At present, a single flywheel energy storage system is difficult to meet the requirement of regenerative braking of a train, and a large-capacity flywheel is limited by the manufacturing technology, so that a plurality of flywheel energy storage systems are mostly connected in parallel to form an integral flywheel energy storage system. Because rail transit belongs to the developments and flows, the net pressure of train interval of dispatching a car, vehicle density, circuit all changes at the moment, how to improve rail transit's stability, improves the effective utilization of every flywheel energy storage system to train regenerative braking energy, reduces the energy consumption for the charging/discharging voltage threshold of every flywheel energy storage system all matches with the real-time operation condition developments of circuit in the flywheel energy storage system, becomes the problem that needs to solve at present urgently.
In order to solve the problems in the prior art, embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for controlling charging and discharging of a flywheel energy storage system. First, a charge/discharge control method of a flywheel energy storage system according to an embodiment of the present invention is described below.
Referring to fig. 1, it shows an implementation flowchart of a charging and discharging control method for a flywheel energy storage system provided in an embodiment of the present invention, where the flywheel energy storage system includes a plurality of flywheel energy storage systems arranged in parallel, and the detailed description is as follows:
and S110, acquiring the real-time SOC value of each flywheel energy storage system and the real-time network voltage of the flywheel energy storage system in real time.
Each flywheel energy storage system is connected with the rectifier unit in parallel and is installed in the traction station, and the flywheel energy storage systems absorb redundant regenerative braking energy when a train is braked and release stored energy when the train is pulled so as to achieve the purposes of energy conservation and network voltage stabilization.
The real-time SOC value of each flywheel energy storage system can be obtained by monitoring the flywheel energy storage management system in each traction station in real time. And the flywheel energy storage management system in each traction station sends the monitored real-time SOC value of each flywheel energy storage system to a charge and discharge control device of the flywheel energy storage system.
The real-time network pressure of the flywheel energy storage system is obtained through the voltage sensor, and the real-time network pressure of each flywheel energy storage management system is the same as that of the flywheel energy storage system. The charging and discharging actions of each flywheel energy storage system in the flywheel energy storage systems are judged by detecting the change of the real-time network voltage.
The SOC value of each flywheel energy storage system is related to the rotation speed of the flywheel energy storage system, and in order to ensure the stability of the whole flywheel energy storage system, the SOC value of each flywheel energy storage system in the flywheel energy storage system needs to be balanced, thereby ensuring that the rotation speed of each flywheel energy storage system in the flywheel energy storage system is the same.
And step S120, when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different and the real-time network voltage is greater than the preset idle network voltage, controlling the target flywheel energy storage system to charge according to the first charging voltage threshold.
The target flywheel energy storage system is any one of the flywheel energy storage systems. And the first charging voltage threshold is obtained by calculation according to the real-time SOC value of the target flywheel energy storage system and the initial charging voltage threshold.
In the running process of rail transit, due to the fact that line departure intervals, vehicle density and line network voltage change at all times, the on-off state of a flywheel energy storage system in each traction station is considered, and charging/discharging voltage threshold values need to be dynamically adjusted.
In order to ensure the stability of the whole flywheel energy storage system and ensure that the power of each flywheel energy storage system is not reduced, therefore, the rotating speed of each flywheel energy storage system in the flywheel energy storage system needs to be ensured to be the same. The power at the beginning and the end of charging is related to the rotating speed, and when the rotating speed is different, the power of each flywheel energy storage system in the flywheel energy storage system is different, so that some flywheel energy storage systems are full, and some flywheel energy storage systems are not full, the overall power is reduced, and the effective utilization of the regenerative braking energy of each flywheel energy storage system on the train cannot be improved to the maximum extent. Therefore, the SOC value of each flywheel energy storage system in the flywheel energy storage systems needs to be balanced.
When the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are different, the running speeds of all the flywheel energy storage systems in the flywheel energy storage systems are different, and the charging voltage threshold value needs to be adjusted in time, so that the charging power is adjusted, the SOC values of different flywheel energy storage systems are consistent, the running speeds of all the flywheel energy storage systems in the flywheel energy storage systems are convenient to be the same, and the stability of the system is provided.
As shown in fig. 2, when the flywheel energy storage system starts to charge/discharge to the maximum power stage, the voltage is proportional to the power value, and when the voltage reaches a certain value, the power maintains the maximum value.
And when the real-time network voltage is greater than the preset idle network voltage, controlling the target flywheel energy storage system to charge according to the first charging voltage threshold value. Because the real-time SOC values of the flywheel energy storage systems are different, the charging voltage threshold values of the flywheel energy storage systems are not completely the same.
In some embodiments, the first charging voltage threshold Δ Uct may be calculated by:
△Uct= Ucsi+△Uci；
△Uci=△SOCi×Uci，Uci=Ucmax- Ucmin-△Ucsi，Ucsi=U0+△Ucsi；
△SOCi= SOCi-SOCav；
the method comprises the steps of obtaining a voltage value of an ith flywheel energy storage system, obtaining a voltage value of the ith flywheel energy storage system, obtaining an initial charging voltage threshold value of the ith flywheel energy storage system, obtaining a delta Uci, obtaining a charging voltage offset value interval of Uci, obtaining a voltage value of the ith flywheel energy storage system, obtaining an initial charging voltage offset value of the ith flywheel energy storage system, obtaining a U0 preset idle load network voltage, obtaining an SOCi, obtaining a real-time SOC value of the ith flywheel energy storage system, and obtaining an SOCav, wherein the Ucsi is an initial charging voltage threshold value of the ith flywheel energy storage system, the delta SOCi is an SOC difference value of the ith flywheel energy storage system, the U42 zxft 3242 is a charging voltage offset value interval, the Ucmin each of the voltage value is a voltage value of the ith flywheel energy storage system, the initial charging voltage offset value of the delta Ucsi, the initial charging voltage offset value of the ith flywheel energy storage system, the U0 is a preset idle load network voltage offset value of the ith flywheel energy storage system, and the SOCav is an average value of all the flywheel energy storage system in the flywheel energy storage system.
Step S130, when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different and the real-time network voltage is smaller than the preset idle network voltage, controlling the target flywheel energy storage system to discharge according to the first discharge voltage threshold.
And the first discharge voltage threshold is obtained by calculation according to the real-time SOC value of the target flywheel energy storage system and the initial discharge voltage threshold.
And when the real-time network voltage is smaller than the preset idle network voltage, controlling the target flywheel energy storage system to discharge according to the second charging voltage threshold value. Because the real-time SOC values of the flywheel energy storage systems are different, the discharge voltage threshold values of the flywheel energy storage systems are not completely the same.
In some embodiments, the first discharge voltage threshold Δ Udt may be calculated by:
△Udt= Udsi+△Udi；
△Udi=△SOCi×Udi，Udi=Udmax- Udmin+△Udsi，Udsi= U0-△Udsi；
△SOCi= SOCi-SOCav；
the method comprises the following steps that Udsi is an initial discharge voltage threshold value of the ith flywheel energy storage system, delta Udi is a real-time discharge voltage offset value of the ith flywheel energy storage system, delta SOCi is an SOC difference value of the ith flywheel energy storage system, udi is a discharge voltage offset value interval, udmax and Udmin are voltage values when discharging according to the maximum power or the minimum power respectively, delta Udsi is an initial discharge voltage offset value of the ith flywheel energy storage system, U0 is preset idle load network voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOCav is an average value of the real-time SOC values of all flywheel energy storage systems in the whole flywheel energy storage system.
Through the adjustment of the charging/discharging voltage threshold, the discharging voltage threshold of the flywheel energy storage system with high energy storage capacity can be increased, the charging voltage threshold can be reduced, the discharging voltage threshold of the flywheel energy storage system with low energy storage capacity can be reduced, the charging voltage threshold can be increased, and the purpose of balancing the SOC difference of a plurality of flywheel energy storage systems can be achieved.
In addition, during operation of the entire flywheel energy storage system, a part of the flywheel energy storage system may stop working due to a fault or stop working due to some reason. As long as one flywheel energy storage system in any traction station stops working, all flywheel energy storage systems in the traction station stop working, and the working personnel can conveniently overhaul the traction station.
The capacity allocation of each traction station is generally reserved with certain margin when the traction station works normally. When all flywheel energy storage systems in the flywheel energy storage systems work normally, the sum of the initial charging and discharging powers of all the flywheel energy storage systems in the ith traction station is generally set as
，
Typically half the full power value.
In some embodiments, each traction station includes at least one flywheel energy storage system, and when any one or more flywheel energy storage systems in the traction station cannot work normally, if the flywheel energy storage systems that can work normally in other traction stations still work according to their initial powers, the network voltage in the power supply area is too low or too high, and the flywheel energy storage systems cannot effectively utilize the regenerative braking energy of the train. Therefore, when it is detected that the flywheel energy storage system cannot work normally, the working power of the flywheel energy storage systems in other traction stations needs to be adjusted in real time.
In this embodiment, when it is detected that all flywheel energy storage systems in only any one of the two traction stations in the flywheel energy storage systems do not work normally, the power of the flywheel energy storage system in the adjacent traction station needs to be increased. And controlling the sum of real-time power of all flywheel energy storage systems in the adjacent traction stations to work according to a first preset power, wherein the first preset power is the sum of initial power of all flywheel energy storage systems in the traction stations which cannot work and the sum of initial power of all flywheel energy storage systems in the adjacent traction stations when all flywheel energy storage systems in the flywheel energy storage systems work normally.
For example, when all flywheel energy storage systems in the mth traction station do not work normally, the sum of real-time powers of all flywheel energy storage systems in the (m + 1) th or (m-1) th traction station is controlled to work according to a first preset power. The mth traction station is the first traction station or the last traction station; the first preset power is the sum of the initial power of all flywheel energy storage systems in the mth traction station and the initial power of all flywheel energy storage systems in m +1 traction stations or the sum of the initial power of all flywheel energy storage systems in the mth traction station and the initial power of all flywheel energy storage systems in m-1 traction stations when all flywheel energy storage systems in the flywheel energy storage systems work normally, and m is a positive integer.
When the first pullsWhen all flywheel energy storage systems in the station do not work normally, the sum of real-time power of all flywheel energy storage systems in the second traction station
，
And
the initial power sum of all flywheel energy storage systems in the first traction station and the initial power sum of all flywheel energy storage systems in the second traction station are respectively when all flywheel energy storage systems in the flywheel energy storage systems work normally, namely all traction stations work normally. Similarly, when all flywheel energy storage systems in the last mth traction station do not work normally, the real-time power sum of all flywheel energy storage systems in the penultimate mth traction station, namely the m-1 th traction station
，
And
the initial power sum of all flywheel energy storage systems in the last traction station and the initial power sum of all flywheel energy storage systems in the last but one traction station are respectively when all flywheel energy storage systems in the flywheel energy storage systems work normally, namely all traction stations work normally.
In some embodiments, when it is detected that all flywheel energy storage systems in any one of the middle tractors do not work normally, that is, when the flywheel energy storage system in one of the middle tractors fails and exits, it is necessary to adjust real-time working power of two tractors adjacent to the stopped traction in real time.
In this embodiment, as shown in fig. 3, when it is detected that all flywheel energy storage systems in only the nth traction station in the flywheel energy storage systems do not normally operate, and the nth traction station is any one of the middle traction stations, the sum of the real-time operating powers of all flywheel energy storage systems in the (n + 1) th traction station is controlled to operate according to the second preset power. And controlling the sum of the real-time working power of all flywheel energy storage systems in the (n-1) th traction station to work according to a third preset power. The second predetermined power and the third predetermined power are related to the distance between the nth traction station, the (n + 1) th traction station and the (n-1) th traction station.
Illustratively, the second predetermined power
Comprises the following steps:
third predetermined power
Comprises the following steps:
wherein ,
is the sum of the initial powers of all flywheel energy storage systems in the (n + 1) th traction station,
is the sum of the initial powers of all flywheel energy storage systems in the n-1 th traction station,
when all flywheel energy storage systems in the nth traction station work normally, the sum of the initial powers of all the flywheel energy storage systems in the nth traction station,
the distance between the (n + 1) th draw and the nth draw,
is the distance between the (n-1) th tow and the nth tow.
In some embodiments, when it is detected that all flywheel energy storage systems in a plurality of intermediate traction stations in the flywheel energy storage systems do not work normally, the sum of the real-time powers of the flywheel energy storage systems in other traction stations is controlled to work according to the respective maximum power.
According to the charge and discharge control method provided by the invention, firstly, the real-time SOC value of each flywheel energy storage system and the real-time network voltage of the flywheel energy storage system are obtained in real time. Then, when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different and the real-time network voltage is greater than the preset idle network voltage, controlling the target flywheel energy storage system to charge according to a first charging voltage threshold; and when the real-time network voltage is smaller than the preset idle network voltage, controlling the target flywheel energy storage system to discharge according to the first discharge voltage threshold value. Therefore, the real-time charging/discharging voltage threshold value of each flywheel energy storage system is adjusted in real time through the acquired real-time SOC value, the initial charging voltage threshold value or the initial discharging voltage threshold value of each flywheel energy storage system, the charging and discharging effect of each flywheel energy storage system is optimized, and the whole flywheel energy storage system is more stable.
When the real-time SOC value of a certain flywheel energy storage system is higher, the discharge voltage is increased, so that the flywheel energy storage system releases more energy in the next traction process to reduce the SOC value. When the real-time SOC value of the flywheel energy storage system is lower, the discharge voltage is reduced, so that the energy released by the flywheel in the next traction process is reduced, and the SOC value is increased. Through the control strategy, the SOC value of the flywheel energy storage system can be ensured to be always in a reasonable range, and the condition that the stability is influenced because the SOC value is too high or too low can not occur.
When charging and discharging of each flywheel energy storage system are started and finished, the power of the flywheel energy storage system cannot be reduced due to the fact that some flywheel energy storage systems are full and some flywheel energy storage systems are not full because the rotating speed of each flywheel energy storage system is different.
In addition, the power value of the flywheel energy storage system in the adjacent traction station can be adjusted in real time according to the switching state of the flywheel energy storage system in each traction station, so that the problem that the network voltage in a power supply interval is too low or too high due to the fact that the flywheel energy storage system is switched off can be solved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Based on the charging and discharging control method of the flywheel energy storage system provided by the embodiment, correspondingly, the invention further provides a specific implementation mode of the charging and discharging control device of the flywheel energy storage system applied to the charging and discharging control method of the flywheel energy storage system. Please see the examples below.
As shown in fig. 4, a charging and discharging control apparatus 400 for a flywheel energy storage system is provided, where the flywheel energy storage system includes a plurality of flywheel energy storage systems arranged in parallel, and the charging and discharging control apparatus 400 includes:
the obtaining module 410 is configured to obtain a real-time SOC value of each flywheel energy storage system and a real-time network voltage of the flywheel energy storage system in real time;
the charging module 420 is configured to control a target flywheel energy storage system to charge according to a first charging voltage threshold when it is detected that real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are different and a real-time network voltage is greater than a preset idle network voltage, where the target flywheel energy storage system is any one of the flywheel energy storage systems;
the discharging module 430 is configured to, when it is detected that real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are different and the real-time grid voltage is less than a preset idle grid voltage, control the target flywheel energy storage system to discharge according to a first discharging voltage threshold; the first charging voltage threshold and the first discharging voltage threshold are obtained through calculation according to a real-time SOC value, an initial charging voltage threshold or an initial discharging voltage threshold of the target flywheel energy storage system.
In a possible implementation manner, the system further includes a power adjusting module 440, configured to control the sum of real-time powers of all flywheel energy storage systems in the m +1 th or m-1 th traction station to operate according to a first preset power when it is detected that only all flywheel energy storage systems in the m-th traction station in the flywheel energy storage systems do not operate normally;
each traction station at least comprises a flywheel energy storage system, and the mth traction station is the first traction station or the last traction station; the first preset power is the sum of the initial power of all flywheel energy storage systems in the mth traction station and the initial power of all flywheel energy storage systems in the m +1 traction stations, or the sum of the initial power of all flywheel energy storage systems in the mth traction station and the initial power of all flywheel energy storage systems in the m-1 traction stations when all flywheel energy storage systems in the flywheel energy storage systems work normally, and m is a positive integer.
In one possible implementation manner, the method further includes: the power adjusting module 440 is configured to, when it is detected that only all flywheel energy storage systems in the nth traction station do not normally operate in the flywheel energy storage systems, control the sum of the real-time working powers of all flywheel energy storage systems in the (n + 1) th traction station to operate according to a second preset power, and control the sum of the real-time working powers of all flywheel energy storage systems in the (n-1) th traction station to operate according to a third preset power;
each traction station at least comprises one flywheel energy storage system, the nth traction station is any one of the middle traction stations, and the second preset power is obtained by calculation according to the distance between the nth traction station and the n-1 st traction station, the distance between the n +1 th traction station and the n-1 th traction station, and the power when the flywheel energy storage systems in the n +1 th traction station and the nth traction station work normally; and the third preset power is calculated according to the distance between the nth traction station and the (n + 1) th traction station, the distance between the (n + 1) th traction station and the (n-1) th traction station and the power of the flywheel energy storage systems in the (n-1) th traction station and the n traction stations during normal operation.
In one possible implementation, the second predetermined power
Comprises the following steps:
third predetermined power
Comprises the following steps:
wherein ,
is the sum of the initial powers of all flywheel energy storage systems in the (n + 1) th traction station,
is the sum of the initial powers of all flywheel energy storage systems in the n-1 th traction station,
when all flywheel energy storage systems in the nth traction station work normally, the sum of the initial powers of all the flywheel energy storage systems in the nth traction station,
the distance between the (n + 1) th draw and the nth draw,
is the distance between the (n-1) th tow and the nth tow.
In one possible implementation manner, the method further includes: and the power adjusting module 440 is configured to, when it is detected that all flywheel energy storage systems in a plurality of intermediate traction stations in the flywheel energy storage systems are not normally operated, control the sum of the real-time powers of the flywheel energy storage systems in other traction stations to operate according to the respective maximum power.
In one possible implementation, the first charging voltage threshold Δ Uct is:
△Uct= Ucsi+△Uci；
△Uci=△SOCi×Uci，Uci=Ucmax- Ucmin-△Ucsi，Ucsi=U0+△Ucsi；
△SOCi= SOCi-SOCav；
the method comprises the following steps that Ucsi is an initial charging voltage threshold of an ith flywheel energy storage system, delta Uci is a real-time charging voltage offset value of the ith flywheel energy storage system, delta SOCi is an SOC difference value of the ith flywheel energy storage system, uci is a charging voltage offset value interval, ucmax and Ucmin are voltage values during charging according to maximum power or minimum power respectively, delta Ucsi is an initial charging voltage offset value of the ith flywheel energy storage system, U0 is preset idle grid voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOcav is an average value of real-time SOC values of all flywheel energy storage systems in the flywheel energy storage system.
In one possible implementation, the first discharge voltage threshold Δ Udt is:
△Udt= Udsi+△Udi；
△Udi=△SOCi×Udi，Udi=Udmax- Udmin+△Udsi，Udsi= U0-△Udsi；
△SOCi= SOCi-SOCav；
the method comprises the following steps that Udsi is an initial discharge voltage threshold value of the ith flywheel energy storage system, delta Udi is a real-time discharge voltage offset value of the ith flywheel energy storage system, delta SOCi is an SOC difference value of the ith flywheel energy storage system, udi is a discharge voltage offset value interval, udmax and Udmin are voltage values during discharging according to maximum power or discharging according to minimum power respectively, delta Udsi is an initial discharge voltage offset value of the ith flywheel energy storage system, U0 is preset idle load network voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOCav is an average value of real-time SOC values of all flywheel energy storage systems in the flywheel energy storage systems.
Fig. 5 is a schematic diagram of an electronic device provided in an embodiment of the present invention. As shown in fig. 5, the electronic apparatus 5 of this embodiment includes: a processor 50, a memory 51 and a computer program 52 stored in said memory 51 and executable on said processor 50. When the processor 50 executes the computer program 52, the steps in the above embodiments of the method for controlling charging and discharging of the flywheel energy storage system, such as steps 110 to 130 shown in fig. 1, are implemented. Alternatively, the processor 50, when executing the computer program 52, implements the functions of the modules in the above device embodiments, such as the functions of the modules 410 to 430 shown in fig. 4.
Illustratively, the computer program 52 may be partitioned into one or more modules that are stored in the memory 51 and executed by the processor 50 to implement the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 52 in the electronic device 5. For example, the computer program 52 may be divided into the modules 410 to 430 shown in fig. 4.
The electronic device 5 may include, but is not limited to, a processor 50 and a memory 51. Those skilled in the art will appreciate that fig. 5 is merely an example of an electronic device 5 and does not constitute a limitation of the electronic device 5 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the electronic device may also include input-output devices, network access devices, buses, etc.
The Processor 50 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 51 may be an internal storage unit of the electronic device 5, such as a hard disk or a memory of the electronic device 5. The memory 51 may also be an external storage device of the electronic device 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the electronic device 5. Further, the memory 51 may also include both an internal storage unit and an external storage device of the electronic device 5. The memory 51 is used for storing the computer program and other programs and data required by the electronic device. The memory 51 may also be used to temporarily store data that has been output or is to be output.
It should be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is only used for illustration, and in practical applications, the above function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the apparatus may be divided into different functional units or modules to perform all or part of the above described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/electronic device and method may be implemented in other ways. For example, the above-described apparatus/electronic device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the above embodiments may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the embodiments of the charge and discharge control method for the flywheel energy storage system may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
The above-mentioned embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A charge and discharge control method of a flywheel energy storage system is characterized in that the flywheel energy storage system comprises a plurality of flywheel energy storage systems which are arranged in parallel, and the charge and discharge control method comprises the following steps:
acquiring a real-time SOC value of each flywheel energy storage system and a real-time network voltage of the flywheel energy storage system in real time;
when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different, and the real-time network voltage is greater than the preset idle network voltage, controlling a target flywheel energy storage system to charge according to a first charging voltage threshold, wherein the target flywheel energy storage system is any one of the flywheel energy storage systems;
when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different, and the real-time network voltage is smaller than the preset idle network voltage, controlling the target flywheel energy storage system to discharge according to a first discharge voltage threshold; and the first charging voltage threshold and the first discharging voltage threshold are obtained by calculation according to the real-time SOC value, the initial charging voltage threshold or the initial discharging voltage threshold of the target flywheel energy storage system.
2. The charge-discharge control method according to claim 1, further comprising:
when detecting that all flywheel energy storage systems in only the mth traction station in the flywheel energy storage systems do not work normally, controlling the sum of the real-time power of all flywheel energy storage systems in the (m + 1) th or (m-1) th traction station to work according to a first preset power;
each traction station at least comprises a flywheel energy storage system, and the mth traction station is the first traction station or the last traction station; the first preset power is the sum of the initial powers of all flywheel energy storage systems in the mth traction station and the initial powers of all flywheel energy storage systems in the m +1 traction stations, or the sum of the initial powers of all flywheel energy storage systems in the mth traction station and the initial powers of all flywheel energy storage systems in the m-1 traction stations when all flywheel energy storage systems in the flywheel energy storage systems work normally, and m is a positive integer.
3. The charge-discharge control method according to claim 1, further comprising:
when detecting that only all flywheel energy storage systems in the nth traction station do not work normally in the flywheel energy storage systems, controlling the sum of the real-time working powers of all flywheel energy storage systems in the (n + 1) th traction station to work according to a second preset power, and controlling the sum of the real-time working powers of all flywheel energy storage systems in the (n-1) th traction station to work according to a third preset power; each traction station at least comprises one flywheel energy storage system, the nth traction station is any one of the middle traction stations, and the second preset power is obtained by calculation according to the distance between the nth traction station and the (n-1) th traction station, the distance between the (n + 1) th traction station and the (n-1) th traction station, and the power when the flywheel energy storage systems in the (n + 1) th traction station and the nth traction station work normally; and the third preset power is obtained by calculating according to the distance between the nth traction station and the (n + 1) th traction station, the distance between the (n + 1) th traction station and the (n-1) th traction station and the power when flywheel energy storage systems in the (n-1) th traction station and the n traction stations work normally.
4. The charge and discharge control method according to claim 3, wherein the second preset power is set to be higher than the first preset power
Comprises the following steps:
the third preset power
Comprises the following steps:
wherein ,
is the sum of the initial powers of all flywheel energy storage systems in the n +1 th traction station,
is the sum of the initial powers of all flywheel energy storage systems in the n-1 th traction station,
5. The charge-discharge control method according to claim 1, further comprising:
and when detecting that all flywheel energy storage systems in a plurality of middle traction stations in the flywheel energy storage systems do not work normally, controlling the real-time power sum of the flywheel energy storage systems in other traction stations to work according to the respective maximum power.
6. The charge and discharge control method according to claim 1, wherein the first charge voltage threshold Δ Uct is:
△Uct= Ucsi+△Uci；
△Uci=△SOCi×Uci，Uci=Ucmax- Ucmin-△Ucsi，Ucsi=U0+△Ucsi；
△SOCi= SOCi-SOCav；
the Ucsi is an initial charging voltage threshold value of the ith flywheel energy storage system, Δ Uci is a real-time charging voltage offset value of the ith flywheel energy storage system, Δ SOCi is an SOC difference value of the ith flywheel energy storage system, uci is a charging voltage offset value interval, ucmax and Ucmin are voltage values during charging according to maximum power or minimum power respectively, Δ Ucsi is an initial charging voltage offset value of the ith flywheel energy storage system, U0 is preset idle network voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOCav is an average value of real-time SOC values of all flywheel energy storage systems in the flywheel energy storage systems.
7. The charge and discharge control method according to claim 6, wherein the first discharge voltage threshold Δ Udt is:
△Udt= Udsi+△Udi；
△Udi=△SOCi×Udi，Udi=Udmax- Udmin+△Udsi，Udsi= U0-△Udsi；
△SOCi= SOCi-SOCav；
the Udsi is an initial discharge voltage threshold value of the ith flywheel energy storage system, Δ Udi is a real-time discharge voltage offset value of the ith flywheel energy storage system, Δ SOCi is an SOC difference value of the ith flywheel energy storage system, udi is a discharge voltage offset value interval, udmax and Udmin are voltage values during discharge according to maximum power or minimum power respectively, Δ Udsi is an initial discharge voltage offset value of the ith flywheel energy storage system, U0 is preset idle grid voltage, SOCi is a real-time SOC value of the ith flywheel energy storage system, and SOCav is an average value of real-time SOC values of all flywheel energy storage systems in the flywheel energy storage systems.
8. The utility model provides a flywheel energy storage system's charge-discharge control device, its characterized in that, including the flywheel energy storage system of a plurality of parallelly connected settings in the flywheel energy storage system, charge-discharge control device includes:
the acquisition module is used for acquiring a real-time SOC value of each flywheel energy storage system and a real-time network voltage of the flywheel energy storage system in real time;
the charging module is used for controlling a target flywheel energy storage system to charge according to a first charging voltage threshold when detecting that real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are different and the real-time network voltage is greater than a preset idle network voltage, wherein the target flywheel energy storage system is any one of the flywheel energy storage systems;
the discharging module is used for controlling the target flywheel energy storage system to discharge according to a first discharging voltage threshold when the real-time SOC values of at least 2 flywheel energy storage systems in the flywheel energy storage systems are detected to be different and the real-time network voltage is smaller than the preset idle network voltage; and the first charging voltage threshold and the first discharging voltage threshold are obtained by calculation according to the real-time SOC value, the initial charging voltage threshold or the initial discharging voltage threshold of the target flywheel energy storage system.
9. An electronic device, comprising a memory for storing a computer program and a processor for invoking and running the computer program stored in the memory, performing the method of any one of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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| CN115833189B (en) | 2023-04-28 |
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