CN113555845B - Overspeed protection device and method for flywheel energy storage box and computer readable storage medium - Google Patents
Overspeed protection device and method for flywheel energy storage box and computer readable storage medium Download PDFInfo
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- CN113555845B CN113555845B CN202110685034.9A CN202110685034A CN113555845B CN 113555845 B CN113555845 B CN 113555845B CN 202110685034 A CN202110685034 A CN 202110685034A CN 113555845 B CN113555845 B CN 113555845B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The invention discloses an overspeed protection device and method of a flywheel energy storage box and a computer readable storage medium, wherein the overspeed protection device comprises: the mounting seat is arranged outside the flywheel energy storage box; the detection module is arranged in the flywheel energy storage box and is used for detecting a speed signal and a vibration frequency signal of a rotor in the flywheel energy storage box; the processing module is arranged on the mounting seat, the detection module is electrically connected with the processing module, and the processing module is used for acquiring a speed signal and a vibration frequency signal and determining a first control instruction according to the speed signal and the vibration frequency signal; and the execution module is arranged on the mounting seat and is respectively electrically connected with the processing module and the flywheel energy storage box, and the execution module controls the rotating speed of the flywheel and the power on or off of the flywheel energy storage box according to the first control instruction, so that the process of high-speed rotation of the flywheel is monitored, the risk of explosion or disassembly of the flywheel is prevented, and the operation of the flywheel energy storage box is further protected.
Description
Technical Field
The invention relates to the technical field of flywheel energy storage, in particular to an overspeed protection device and method of a flywheel energy storage box and a computer readable storage medium.
Background
In the prior art, flywheel energy storage is to store energy in the form of kinetic energy in a flywheel rotating at a high speed, and mainly comprises a flywheel rotor, a high-speed bearing, a motor/generator, a power converter and a vacuum safety cover (vacuum chamber), wherein the flywheel rotor is made of high-strength alloy and composite materials. The basic principle is that the electric energy drives the flywheel to rotate at a high speed, and the electric energy is converted into the kinetic energy of the flywheel for storage. When electric energy is needed, the flywheel is decelerated, the motor is converted into a generator to operate, kinetic energy of the flywheel is converted into electric energy, and the acceleration and deceleration of the flywheel realize charging and discharging, so the flywheel battery is also called. With the technological development of materials, a composite material type rotor with super-strong radial and circumferential stresses gradually replaces an all-steel flywheel, and after the flywheel encounters a fault, the flywheel can not immediately make the requirements of speed limit, scram, speed reduction and the like due to the limitation of flywheel materials and overlarge mass, so that the flywheel is extremely easy to generate serious consequences such as disassembly, explosion and the like. Therefore, the deceleration problem of the system becomes the bottleneck of development and popularization and application of flywheel energy storage technology.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides an overspeed protection device and method for a flywheel energy storage box and a computer readable storage medium, which can monitor the high-speed rotation process of the flywheel, prevent the explosion or disassembly danger of the flywheel, and further protect the operation of the flywheel energy storage box.
According to a first aspect of the present invention, there is provided an overspeed protection apparatus for a flywheel energy storage tank, comprising: the mounting seat is arranged outside the flywheel energy storage box; the detection module is arranged in the flywheel energy storage box and is used for detecting a speed signal and a vibration frequency signal of a rotor in the flywheel energy storage box; the processing module is arranged on the mounting seat, the detection module is electrically connected with the processing module, and the processing module is used for acquiring the speed signal and the vibration frequency signal and determining a first control instruction according to the speed signal and the vibration frequency signal; and the execution module is arranged on the mounting seat, is respectively and electrically connected with the processing module and the flywheel energy storage box, and controls the rotating speed of the flywheel and the power on or power off of the flywheel energy storage box according to the first control instruction.
The overspeed protection device of the flywheel energy storage box according to the embodiment of the first aspect of the invention has at least the following beneficial effects: the mounting seat is arranged outside the flywheel energy storage box, thereby saving manpower and improving working efficiency, the detection module is arranged inside the flywheel energy storage box, the detection module is used for detecting the speed signal and the vibration frequency signal of the rotor in the flywheel energy storage box, the processing module is arranged on the mounting seat, the processing module is used for acquiring the speed signal and the vibration frequency signal of the detection module, and determining a first control instruction according to the speed signal and the vibration frequency signal, the execution module is arranged on the mounting seat and is respectively electrically connected with the processing module and the flywheel energy storage box, the execution module controls the rotating shaft of the flywheel and the power-on or power-off of the flywheel energy storage box according to the first control instruction, the safe and efficient effect is achieved, the overspeed protection device of the flywheel energy storage box can greatly protect the rotation of the flywheel in a vacuum environment, the process of high-speed rotation of the flywheel is monitored, the occurrence of explosion or disassembly of the flywheel is prevented, and the operation of the flywheel energy storage box is further protected.
According to some embodiments of the invention, the detection module comprises a speed sensor for detecting the speed signal of the rotor, the speed sensor transmitting the speed signal to the processing module via a wire, and a vibration sensor for detecting the vibration frequency signal of the rotor, the vibration sensor transmitting the vibration frequency signal to the processing module via a wire.
According to some embodiments of the invention, the detection module further comprises a current-voltage sensor for detecting a current signal and a voltage signal of the flywheel energy storage tank, the current-voltage sensor transmitting the current signal and the voltage signal to the processing module via wires.
According to a second aspect of the present invention, there is provided a method of overspeed protection of a flywheel storage tank, comprising an overspeed protection apparatus having a flywheel storage tank, said method comprising:
The processing module acquires the speed signal and the vibration frequency signal from the detection module;
The processing module determines a first control instruction according to the speed signal and the vibration frequency signal;
And the execution module controls the rotating speed of the flywheel and the power-on or power-off of the flywheel energy storage box according to the first control instruction.
The overspeed protection method of the flywheel energy storage box according to the embodiment of the second aspect of the invention has at least the following beneficial effects: the processing module determines a first control instruction according to the speed signal and the oscillation frequency signal by acquiring the speed signal and the oscillation frequency signal from the detection module, and the execution module controls the rotating speed of the flywheel and the power on or off of the flywheel energy storage box according to the first control instruction.
According to some embodiments of the invention, the processing module determining the first control command from the speed signal and the vibration frequency signal comprises:
The processing module determines the rotating speed value of the rotor according to the speed signal, and determines the vibration frequency value of the rotor according to the vibration frequency signal;
judging comparison results of the rotating speed value and the first fixed value and the vibration frequency value and the second fixed value;
When the rotating speed value is greater than the first fixed value and/or the vibration frequency value is greater than the second fixed value, the first control instruction is used for limiting the rotating speed of the flywheel and controlling the circuit in the flywheel energy storage box to be powered off;
And when the rotating speed value is smaller than or equal to the first fixed value and the vibration frequency value is smaller than or equal to the second fixed value, the first control instruction is used for keeping the rotating speed of the flywheel and controlling a circuit in the flywheel energy storage box to keep an electrified state.
According to some embodiments of the invention, further comprising:
the processing module acquires a current signal and a voltage signal from the detection module;
The processing module determines a second control instruction according to the speed signal, the vibration frequency signal, the current signal and the voltage signal;
And the execution module controls the power on or power off of the flywheel energy storage box according to the second control instruction.
According to some embodiments of the invention, the processing module determining a second control command from the speed signal, the vibration frequency signal, the current signal, and the voltage signal comprises:
Determining a rotating speed value of the rotor according to the speed signal, and determining a vibration frequency value of the rotor according to the vibration frequency signal;
determining a current value of a circuit in the flywheel energy storage box according to the current signal, and determining a voltage value of the circuit in the flywheel energy storage box according to the voltage signal;
Determining the power value of the flywheel energy storage box according to the current value and the voltage value;
judging comparison results of the rotating speed value and a first fixed value, the vibration frequency value and a second fixed value and the power value and a third fixed value;
When the rotating speed value is greater than the first fixed value and/or the vibration frequency value is greater than the second fixed value, the second control instruction is used for controlling a circuit in the flywheel energy storage box to be powered off;
When the rotating speed value is smaller than or equal to the first fixed value, the vibration frequency value is smaller than or equal to the second fixed value, the power value is larger than the third fixed value, and the second control instruction is used for controlling a circuit in the flywheel energy storage box to be powered off;
when the rotating speed value is smaller than or equal to the first fixed value, the vibration frequency value is smaller than or equal to the second fixed value, the power value is smaller than or equal to the third fixed value, and the second control instruction is used for controlling a circuit in the flywheel energy storage box to keep in an electrified state.
According to a third aspect of the present invention, there is provided a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the overspeed protection method of the flywheel storage case of any one of the above.
The computer-readable storage medium according to the embodiment of the third aspect of the present invention has at least the following advantageous effects: by adopting the technical scheme, the speed of the rotor and the vibration frequency of the rotor are monitored through the detection module arranged in the flywheel energy storage box, the detection module transmits the detected speed signal and vibration frequency signal to the processing module and the execution module arranged outside the flywheel energy storage box, and then the high-speed rotation process of the flywheel is monitored, when the rotating speed and the vibration frequency exceed fixed values, the processing module judges and sends a first control instruction to the execution module, and the execution module adopts the flywheel speed limit or carries out power-off treatment on the flywheel energy storage box to avoid the danger of flywheel explosion or disassembly. The flywheel overspeed protection device also has the function of monitoring current, voltage and power variables of the flywheel energy storage box, and protects the operation of the flywheel energy storage box.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of an overspeed protection apparatus for a flywheel energy storage tank in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of a method of overspeed protection of a flywheel energy storage tank in accordance with an embodiment of the present invention;
FIG. 3 is a flow chart of a method of overspeed protection of a flywheel storage tank in accordance with another embodiment of the present invention;
FIG. 4 is a flow chart of a method of overspeed protection of a flywheel energy storage tank (including a current-voltage sensor) in accordance with an embodiment of the present invention;
FIG. 5 is a flow chart of a method of overspeed protection of a flywheel energy storage tank (including a current-voltage sensor) in accordance with another embodiment of the present invention;
FIG. 6 is a signal flow diagram of a flywheel energy storage tank and overspeed protection apparatus according to an embodiment of the present invention.
Reference numerals: overspeed protection apparatus 10; a mounting base 11; a detection module 12; a processing module 13; an execution module 14;
Flywheel energy storage tank 20.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
An overspeed protection apparatus for a flywheel energy storage tank according to an embodiment of the first aspect of the present invention is described with reference to fig. 1.
Referring to fig. 1, in some embodiments, the overspeed protection apparatus of the flywheel storage case includes a mount 11, a detection module 12, a processing module 13, and an execution module 14. The mounting seat 11 is detachably arranged on the outer side wall of the flywheel energy storage box 20, the mounting seat 11 is positioned outside the flywheel energy storage box 20, and an overspeed protection device of the flywheel energy storage box is conveniently mounted on the outer side wall of the flywheel energy storage box 20 by an operator, so that manpower is saved, and working efficiency is improved. The detection module 12 is disposed inside the flywheel energy storage tank 20, and the detection module 12 is configured to detect a speed signal and a vibration frequency signal of a rotor inside the flywheel energy storage tank 20. The processing module 13 is disposed on the mounting seat 11, the detection module 12 is electrically connected with the processing module 13, and the processing module 13 is configured to obtain a speed signal and a vibration frequency signal detected by the detection module 12, determine a first control instruction according to the speed signal and the vibration frequency signal, and transmit the speed signal and the vibration frequency signal detected by the detection module 12 in the flywheel energy storage box 20 to the processing module 13. The execution module 14 is arranged on the mounting seat 11, the execution module 14 is electrically connected with the processing module 13, the execution module 14 is electrically connected with an internal main control circuit (not shown in the figure) of the flywheel energy storage box 20, the execution module 14 controls the rotating speed of the flywheel and the power on or off of the flywheel energy storage box 20 according to a first control instruction sent by the processing module 13, the safe and efficient effect is achieved, the overspeed protection device of the flywheel energy storage box can greatly protect the rotation of the flywheel in a vacuum environment, the process of high-speed rotation of the flywheel is monitored, the explosion or disassembly danger of the flywheel is prevented, and the operation of the flywheel energy storage box is further protected.
It should be noted that, in some embodiments, the detection module 12 includes a speed sensor and a vibration sensor, where the speed sensor and the vibration sensor are both disposed inside the flywheel energy storage tank 20, and the speed sensor and the vibration sensor are both electrically connected to the processing module through wires. It is understood that the speed sensor and the vibration sensor are both disposed at a rotation shaft (not shown) of the inner rotor of the flywheel energy storage tank 20, and the speed sensor detects the rotation speed of the rotation shaft of the rotor by common functional means known to those skilled in the art, which is not described herein. The vibration sensor is installed and arranged at the rotating shaft of the rotor, so that the vibration frequency signal of the rotor can be accurately detected, the installation is convenient, and the measuring precision of the speed sensor and the vibration sensor is improved.
It should be further noted that, in some embodiments, the detection module 12 further includes a current-voltage sensor, the current-voltage sensor is disposed on the main control circuit inside the flywheel energy storage tank 20, the current-voltage sensor is electrically connected with the processing module 13, the current-voltage sensor detects a current signal and a voltage signal of the main control circuit inside the flywheel energy storage tank 20, and the processing module 13 calculates a total power value of the flywheel energy storage tank 20 according to the current signal and the voltage signal, so as to monitor the current, the voltage and the power variable of the flywheel energy storage tank 20, and protect the normal operation of the flywheel energy storage tank 20.
The second embodiment of the present invention further provides an overspeed protection method for the flywheel energy storage tank 20, which is applied to the overspeed protection apparatus 10 disposed outside the flywheel energy storage tank 20 in the above embodiment, wherein the structure or the component configuration of the overspeed protection apparatus 10 is already described in detail in the above embodiment, and will not be described herein. Referring to fig. 2, the protection method according to the embodiment of the present invention includes, but is not limited to, step S100, step S200, and step S300.
Step S100, a processing module 13 acquires a speed signal and a vibration frequency signal from a detection module 12;
step S200, the processing module 13 determines a first control instruction according to the speed signal and the vibration frequency signal;
in step S300, the execution module 14 controls the rotation speed of the flywheel and the power on or off of the flywheel energy storage box 20 according to the first control instruction.
The detection module 12 monitors the rotation speed of the flywheel in real time and transmits the detected speed signal to the processing module 13; the detection module 12 monitors the vibration frequency of the flywheel in real time and transmits the detected vibration frequency signal to the processing module 13; the processing module 13 determines the first control command based on the speed signal and the vibration frequency signal transmitted from the detecting module 12. It should be noted that, the first control instruction includes execution results of the plurality of execution modules 14, the execution modules 14 control the rotation speed of the flywheel and the power on or off of the flywheel energy storage box 20 according to the first control instruction, the method can monitor the high-speed rotation process of the flywheel, when the rotation speed and the vibration frequency of the rotor exceed fixed values, the processing module 13 judges and sends the first control instruction to the execution modules 14, and the execution modules 14 adopt flywheel speed limiting or perform power off processing on the flywheel energy storage box 20 according to the first control instruction so as to avoid the danger of explosion or disassembly of the flywheel.
Referring to fig. 3, fig. 3 is a step flow diagram of one embodiment of the refinement flow of step S200 in fig. 2, where step S200 includes, but is not limited to, step 210, step S220, step S230, step S240.
Step S210, the processing module 13 determines the rotating speed value of the rotor according to the speed signal, and the processing module 13 determines the vibration frequency value of the rotor according to the vibration frequency signal;
Step S220, judging comparison results of the rotating speed value, the first fixed value and the vibration frequency value with the second fixed value;
Step S230, when the rotation speed value is greater than a first fixed value and/or the vibration frequency value is greater than a second fixed value, the first control instruction is used for limiting the rotation speed of the flywheel and controlling the circuit in the flywheel energy storage box 20 to be powered off;
In step S240, when the rotation speed value is less than or equal to the first fixed value and the vibration frequency value is less than or equal to the second fixed value, the first control command is used to maintain the rotation speed of the flywheel and control the circuit in the flywheel energy storage tank 20 to maintain the energized state.
The detection module 12 comprises a speed sensor and a vibration frequency sensor, the processing module 13 obtains a speed signal fed back by the speed sensor to determine the rotation speed value of the rotor in the flywheel energy storage box 20, the processing module 13 obtains a vibration frequency signal fed back by the vibration frequency sensor to determine the vibration frequency value of the rotor, and the comparison result of the rotation speed value and the first fixed value and the comparison result of the vibration frequency value and the second fixed value are judged. When the rotation speed value is greater than the first fixed value and the vibration frequency value is greater than the second fixed value, the execution module 14 limits the rotation speed of the flywheel according to the first control instruction, stops providing power for the flywheel, so that the rotation speed of the flywheel is not increased, or the circuit in the pure box of the flywheel is controlled to be powered off, and the rotation speed of the flywheel is further reduced; when the rotation speed value is greater than the first fixed value or the vibration frequency value is greater than the second fixed value, the execution module 14 limits the rotation speed of the flywheel according to the first control instruction, and stops providing power for the flywheel, so that the rotation speed of the flywheel is not increased, and it can be understood that the rotation speed of the flywheel can be reduced by controlling the circuit in the flywheel energy storage box 20 to be powered off and stop providing power for the flywheel; when the rotational speed value is less than or equal to the first fixed value and the vibration frequency is less than the second fixed value, the execution module 14 maintains the rotational speed of the flywheel and controls the circuitry within the flywheel energy storage tank 20 to maintain an energized state according to the first control command. The first fixed value is the maximum working rotation speed of the rotor, the second fixed value is the maximum vibration frequency which can be born by the rotor when the rotor can stably work, and the danger of flywheel explosion or disassembly can be avoided only when the rotation speed of the rotor is smaller than the first fixed value and the vibration frequency of the rotor is smaller than the second fixed value.
Referring to fig. 4, fig. 4 is a diagram showing another protection method according to an embodiment of the present invention, including but not limited to step S300, step S400, step S500, and step S600.
Step S400, the processing module 13 acquires a current signal and a voltage signal from the detection module 12;
Step S500, the processing module 13 determines a second control instruction according to the speed signal, the vibration frequency signal, the current signal and the voltage signal;
in step S600, the execution module 14 controls the power on or power off of the flywheel energy storage tank 20 according to the second control instruction.
The detection module 12 further includes a current-voltage sensor electrically connected to the processing module 13, where the detection module 12 monitors the current and voltage of the internal circuit of the flywheel energy storage tank 20 in real time, and sends the detected circuit signal and voltage signal to the processing module 13, and the processing module 13 obtains the total power of the flywheel energy storage tank 20 according to the current signal and the voltage signal transmitted by the detection module 12, and the processing module 13 determines the second control instruction according to the speed signal, the vibration frequency signal, the current signal and the voltage signal. It should be noted that, the second control instruction includes an execution result of the plurality of execution modules 14, after the execution module 14 completes the first control instruction, when the rotation speed and the vibration frequency of the flywheel do not exceed the fixed values and the circuit in the flywheel energy storage box 20 is not powered off, the execution module 14 controls the power on or off of the flywheel energy storage box 20 according to the second control instruction, when the rotation speed and the vibration frequency of the flywheel exceed the fixed values and the circuit in the flywheel energy storage box 20 is powered off and the power supply to the flywheel is stopped, the execution module 14 does not control the power on or off of the flywheel energy storage box 20 according to the second control instruction any more, the method can monitor the stability of the current and the voltage in the flywheel energy storage box 20, when the current value and the voltage value exceed the rated values and the execution module 14 executes the first control instruction to keep the rotation speed of the flywheel and the circuit in the flywheel energy storage box 20 in the power on state, the processing module 13 judges and sends the second control instruction to the execution module 14, and the execution module 14 adopts the power off treatment to the flywheel energy storage box 20 according to the second control instruction so as to avoid the overload danger of the flywheel energy storage box 20.
Referring to fig. 5, fig. 5 is a flowchart of one embodiment of a refinement flow of step S500, where steps S500 and S600 include, but are not limited to, step S510, step S520, step S530, step S540, step S550, step S560, step S570.
Step S510, determining a rotating speed value of the rotor according to the speed signal, and determining a vibration frequency value of the rotor according to the vibration frequency signal;
Step S520, determining a current value of a circuit in the flywheel energy storage box 20 according to the current signal, and determining a voltage value of the circuit in the flywheel energy storage box 20 according to the voltage signal;
step S530, determining the power value of the flywheel energy storage box 20 according to the current value and the voltage value;
step S540, judging a comparison result of the rotating speed value and the first fixed value, the vibration frequency value and the second fixed value, and the power value and the third fixed value;
Step S550, when the rotation speed value is greater than the first fixed value and/or the vibration frequency value is greater than the second fixed value, the second control command is used for controlling the circuit in the flywheel energy storage tank 20 to be powered off;
step S560, when the rotation speed value is less than or equal to the first fixed value, the vibration frequency value is less than or equal to the second fixed value, and the power value is greater than the third fixed value, the second control command is used to control the circuit in the flywheel energy storage tank 20 to be powered off;
In step S570, when the rotation speed value is less than or equal to the first fixed value, the vibration frequency value is less than or equal to the second fixed value, and the power value is less than or equal to the third fixed value, the second control command is used to control the circuit in the flywheel energy storage tank 20 to keep the energized state.
The detection module 12 comprises a speed sensor, a vibration frequency sensor and a current-voltage sensor, the processing module 13 obtains a speed signal fed back by the speed sensor to determine a rotating speed value of a rotor in the flywheel energy storage tank 20, the processing module 13 obtains a vibration frequency signal fed back by the vibration frequency sensor to determine a vibration frequency value of the rotor, the processing module 13 determines a current value of a circuit in the flywheel energy storage tank 20 according to a current signal fed back by the current-voltage sensor, the processing module 13 determines a voltage value of the circuit in the flywheel energy storage tank 20 according to a voltage signal fed back by the current-voltage sensor, the processing module 13 determines a power value of the flywheel energy storage tank 20 according to the current value and the voltage value, and the processing module 13 judges a comparison result of the rotating speed value and the first fixed value, the vibration frequency value and the second fixed value and the power value and the third fixed value. When the rotation speed value is greater than the first fixed value and the vibration frequency value is greater than the second fixed value, the executing module 14 executes and controls the circuit in the flywheel energy storage box 20 to be powered off, and when the rotation speed value is greater than the first fixed value or the vibration frequency value is greater than the second fixed value, the processing module 13 sends a second control instruction to the executing module 14, the executing module 14 receives the second control instruction, and the executing module 14 executes and controls the circuit in the flywheel energy storage box 20 to be powered off; when the processing module 13 judges that the rotating speed value is smaller than or equal to the first fixed value, the vibration frequency value is smaller than or equal to the second fixed value, and the power value is larger than the third fixed value, the processing module 13 sends a second control instruction to the executing module 14, the executing module 14 receives the second control instruction, and the executing module 14 executes and controls the circuit in the flywheel energy storage box 20 to be powered off; when the rotation speed value is smaller than or equal to the first fixed value, the vibration frequency value is smaller than or equal to the second fixed value, and the power value is smaller than or equal to the third fixed value, the execution module 14 receives the second control instruction, and the execution module 14 executes and controls the circuit in the flywheel energy storage box 20 to keep the energized state. It should be noted that, the third constant value is the maximum rated power of the flywheel energy storage tank 20, and when the power value of the flywheel energy storage tank 20 is less than or equal to the third constant value, the risk of overload of the flywheel energy storage tank 20 can be avoided.
Embodiments of the third aspect of the present invention also provide a computer readable storage medium having stored thereon a processor executable program which when executed by a processor is for implementing a method of overspeed protection of a flywheel storage tank.
It is to be understood that all or some of the steps, systems, and methods disclosed above may be implemented in software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Claims (6)
1. An overspeed protection device for a flywheel energy storage tank, comprising:
the mounting seat is arranged outside the flywheel energy storage box;
The detection module is arranged in the flywheel energy storage box and is used for detecting a speed signal and a vibration frequency signal of a rotor in the flywheel energy storage box, wherein the detection module comprises a current-voltage sensor which is used for detecting a current signal and a voltage signal of the flywheel energy storage box, and the current-voltage sensor transmits the current signal and the voltage signal to the processing module through wires;
The processing module is arranged on the mounting seat, the detection module is electrically connected with the processing module, the processing module is used for acquiring the speed signal and the vibration frequency signal, determining a first control instruction according to the speed signal and the vibration frequency signal, and the processing module comprises: the processing module is used for determining the rotating speed value of the rotor according to the speed signal, and the processing module is used for determining the vibration frequency value of the rotor according to the vibration frequency signal; judging comparison results of the rotating speed value and the first fixed value and the vibration frequency value and the second fixed value; when the rotating speed value is greater than the first fixed value and/or the vibration frequency value is greater than the second fixed value, the first control instruction is used for limiting the rotating speed of the flywheel and controlling the circuit in the flywheel energy storage box to be powered off; when the rotating speed value is smaller than or equal to the first fixed value and the vibration frequency value is smaller than or equal to the second fixed value, the first control instruction is used for keeping the rotating speed of the flywheel and controlling a circuit in the flywheel energy storage box to keep an electrified state; and is used for obtaining the current signal and the voltage signal from the detection module; determining a second control command based on the speed signal, the vibration frequency signal, the current signal, and the voltage signal; and
The execution module is arranged on the mounting seat and is respectively and electrically connected with the processing module and the flywheel energy storage box, and the execution module controls the rotating speed of the flywheel and the power on or power off of the flywheel energy storage box according to the first control instruction; the execution module is also used for controlling the power-on or power-off of the flywheel energy storage box according to the second control instruction.
2. The overspeed protection apparatus of a flywheel energy storage tank of claim 1, wherein the detection module includes a speed sensor for detecting the speed signal of the rotor, the speed sensor transmitting the speed signal to the processing module through a wire, and a vibration sensor for detecting the vibration frequency signal of the rotor, the vibration sensor transmitting the vibration frequency signal to the processing module through a wire.
3. A method of overspeed protection of a flywheel energy storage tank, comprising the overspeed protection apparatus of the flywheel energy storage tank of claim 2, said method comprising:
The processing module acquires the speed signal and the vibration frequency signal from the detection module;
The processing module determines a first control instruction according to the speed signal and the vibration frequency signal;
The execution module controls the rotating speed of the flywheel and the power-on or power-off of the flywheel energy storage box according to the first control instruction;
the overspeed protection method of the flywheel energy storage box further comprises the following steps:
the processing module acquires a current signal and a voltage signal from the detection module;
The processing module determines a second control instruction according to the speed signal, the vibration frequency signal, the current signal and the voltage signal;
And the execution module controls the power on or power off of the flywheel energy storage box according to the second control instruction.
4. The flywheel tank overspeed protection method of claim 3, wherein said processing module determining a first control command based on said speed signal and said vibration frequency signal comprises:
The processing module determines the rotating speed value of the rotor according to the speed signal, and determines the vibration frequency value of the rotor according to the vibration frequency signal;
judging comparison results of the rotating speed value and the first fixed value and the vibration frequency value and the second fixed value;
When the rotating speed value is greater than the first fixed value and/or the vibration frequency value is greater than the second fixed value, the first control instruction is used for limiting the rotating speed of the flywheel and controlling the circuit in the flywheel energy storage box to be powered off;
And when the rotating speed value is smaller than or equal to the first fixed value and the vibration frequency value is smaller than or equal to the second fixed value, the first control instruction is used for keeping the rotating speed of the flywheel and controlling a circuit in the flywheel energy storage box to keep an electrified state.
5. The flywheel energy storage tank overspeed protection method of claim 3, wherein said processing module determining a second control command based on said speed signal, said vibration frequency signal, said current signal, and said voltage signal comprises:
Determining a rotating speed value of the rotor according to the speed signal, and determining a vibration frequency value of the rotor according to the vibration frequency signal;
determining a current value of a circuit in the flywheel energy storage box according to the current signal, and determining a voltage value of the circuit in the flywheel energy storage box according to the voltage signal;
Determining the power value of the flywheel energy storage box according to the current value and the voltage value;
judging comparison results of the rotating speed value and a first fixed value, the vibration frequency value and a second fixed value and the power value and a third fixed value;
When the rotating speed value is greater than the first fixed value and/or the vibration frequency value is greater than the second fixed value, the second control instruction is used for controlling a circuit in the flywheel energy storage box to be powered off;
When the rotating speed value is smaller than or equal to the first fixed value, the vibration frequency value is smaller than or equal to the second fixed value, the power value is larger than the third fixed value, and the second control instruction is used for controlling a circuit in the flywheel energy storage box to be powered off;
when the rotating speed value is smaller than or equal to the first fixed value, the vibration frequency value is smaller than or equal to the second fixed value, the power value is smaller than or equal to the third fixed value, and the second control instruction is used for controlling a circuit in the flywheel energy storage box to keep in an electrified state.
6. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the overspeed protection method of the flywheel storage case of any one of claims 3 to 5.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203278198U (en) * | 2013-05-08 | 2013-11-06 | 青岛数能电气工程有限公司 | Motor fault predetermination protective device |
| CN110994652A (en) * | 2019-12-09 | 2020-04-10 | 北京泓慧国际能源技术发展有限公司 | Energy storage device and energy storage system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203278198U (en) * | 2013-05-08 | 2013-11-06 | 青岛数能电气工程有限公司 | Motor fault predetermination protective device |
| CN110994652A (en) * | 2019-12-09 | 2020-04-10 | 北京泓慧国际能源技术发展有限公司 | Energy storage device and energy storage system |
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