CN116131727A - Floating type photovoltaic power generation, energy storage and gyro stabilization system and control method - Google Patents
Floating type photovoltaic power generation, energy storage and gyro stabilization system and control method Download PDFInfo
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- CN116131727A CN116131727A CN202310098256.XA CN202310098256A CN116131727A CN 116131727 A CN116131727 A CN 116131727A CN 202310098256 A CN202310098256 A CN 202310098256A CN 116131727 A CN116131727 A CN 116131727A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 108
- 238000010248 power generation Methods 0.000 title claims abstract description 49
- 238000007667 floating Methods 0.000 title claims abstract description 33
- 230000006641 stabilisation Effects 0.000 title claims abstract description 16
- 238000011105 stabilization Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 45
- 230000002457 bidirectional effect Effects 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009489 vacuum treatment Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000005381 potential energy Methods 0.000 description 1
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- 238000002910 structure generation Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/04—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using gyroscopes directly
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
- B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
- H02J15/007—Systems for storing electric energy involving storage in the form of mechanical energy, e.g. fly-wheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/30—Arrangements for balancing of the load in a network by storage of energy using dynamo-electric machines coupled to flywheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/4453—Floating structures carrying electric power plants for converting solar energy into electric energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a floating type photovoltaic power generation, energy storage and gyro stabilization system and a control method, which aim to ensure the stability of a photovoltaic array structure and the system, and simultaneously consider the energy storage requirement, the moment of inertia of a rotor is improved through an energy storage battery counterweight, and the energy storage battery is adopted to balance the gyro stabilization platform, so that the structural stability of floating type photovoltaic is improved on one hand, and the stability of a power grid is improved through the charge and discharge of the energy storage battery on the other hand; according to the flywheel principle, the power grid is rapidly supported, and the speed can be in the millisecond level; the 360-degree cradle head and the electric propeller are controlled to change the horizontal direction of the energy storage tracking pontoon, so that optimal tracking and positioning of the photovoltaic array are ensured, and fluctuation exceeding the upper limit is restrained through reverse thrust.
Description
Technical Field
The invention belongs to the field of new energy power generation, and particularly relates to a floating type photovoltaic power generation, energy storage and gyro stabilization system and a control method.
Background
With the rapid development of new energy, water floating type photovoltaic enters the market, and the fluctuation of a power grid is caused by the uncertainty and the instability of photovoltaic power generation and wind power generation due to the instability of a photovoltaic power generation structure and power generation characteristics caused by the fluctuation of water bodies such as sea. The three important problems of the photovoltaic power generation structure, the stable power generation characteristic and the energy storage are highlighted.
The floating type photovoltaic stability is mainly influenced by wind and surge acting force, such as surge fluctuation mainly comprises horizontal and vertical dimensional movements, the superposition of the two movements enables the offshore photovoltaic structure to be up-and-down inclined, and the stability of the floating type photovoltaic structure and the reliability of power generation are greatly influenced. The floating type photovoltaic fluctuation in the vertical direction is restrained, a flexible damping mode, inertial gravity and the like can be adopted, and based on the characteristics of the gyroscope, when the gyroscope rotor rotates at a high speed, the direction of the rotation shaft of the gyroscope in the inertial space is kept stable and unchanged, namely, the rotation shaft of the gyroscope points to a fixed direction when no external moment acts on the gyroscope; while opposing any forces that change the axial direction of the rotor. This physical phenomenon is called the axiality or stability of the gyroscope. Its stability varies with the following physical quantities:
(1) The larger the rotational inertia of the rotor is, the better the stability is;
(2) The greater the rotor angular velocity, the better the stability.
According to the characteristics, the rotary inertia of the rotor is improved through the balance weight of the energy storage battery while considering the energy storage requirement. On one hand, the stability of the rotor, namely the stability of the photovoltaic bracket, is improved, and on the other hand, the stability of the power grid is improved through energy storage, so that the structure and the power generation stability of floating photovoltaic power generation are possible.
Disclosure of Invention
In order to solve the technical problems, the invention provides a floating type photovoltaic power generation, energy storage and gyro stabilizing system and a control method, which are used for influencing the floating type photovoltaic structure and the power generation efficiency of a photovoltaic module by wave motion of a water body and considering the influence of instability of photovoltaic power generation on a power grid.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a floating type photovoltaic power generation, energy storage and gyro stabilization system comprises a photovoltaic array, a pontoon unit, a gyro stabilization unit, an energy storage power generation unit, a solar tracking unit and a photovoltaic bracket;
the buoy unit consists of a plurality of supporting buoys and a plurality of energy storage tracking buoys, and is distributed according to a photovoltaic array structure, wherein the energy storage tracking buoys are installed in the middle of the supporting buoys around the photovoltaic array in a penetrating manner;
the gyro stabilizing units are vertically arranged in each energy storage tracking pontoon; the photovoltaic bracket is arranged at the outer top parts of the supporting pontoon and the energy storage tracking pontoon;
the energy storage power generation unit comprises an energy storage battery, a motor/generator integrated machine, a bidirectional inverter, a gyro stabilizing platform and a gyro main shaft; the upper end of the main shaft of the gyroscope is connected with the motor/generator integrated machine, the lower end of the main shaft is sealed with an upper bearing through the upper end of the energy storage tracking pontoon, and the main shaft penetrates through the center of the gyroscope stabilizing platform and is connected with the bottom of the energy storage tracking pontoon through a lower bearing; the gyro main shaft is coaxial with and fixedly connected with the gyro stabilizing platform; the upper end of the gyro main shaft is provided with a variable-speed electric/power generation integrated machine;
the solar tracking unit is an electric propeller and is connected with the outer bottom of the energy storage tracking pontoon through a 360-degree holder, and the purpose is to change the horizontal direction of the energy storage tracking pontoon through controlling the 360-degree holder and the electric propeller, so that the photovoltaic array is controlled to keep the optimal solar irradiation intensity and the position stability of the photovoltaic array, and meanwhile, the fluctuation exceeding the upper limit is restrained through reverse thrust;
the photovoltaic bracket comprises a flexible buffer and a bracket, wherein the buffer is arranged at one end of the bracket, is positioned at the outer upper part of the supporting pontoon, and is positioned at the position surrounding the main shaft of the gyroscope at the outer upper part of the energy storage tracking pontoon; the other end of the photovoltaic bracket is connected with the photovoltaic array; the flexible buffer overcomes a surge with a certain longitudinal amplitude, and reduces the up-and-down vibration of the photovoltaic array.
Further, the energy storage tracking pontoon and the supporting pontoon are both of conical structures at the lower part of the upper circular truncated cone, the energy storage tracking pontoon is a rigid sealing shell, and the inside is subjected to vacuum treatment or is an inflatable pontoon.
Further, the energy storage battery is uniformly arranged on the gyro stabilizing platform, and the positive input and output ends of the battery are connected with the positive terminal of the bidirectional inverter through the positive power connecting ring of the gyro main shaft; the negative input and output ends of the battery are connected with the negative connecting terminal of the bidirectional inverter through a negative power supply connecting ring of the gyro main shaft; when surplus electricity exists in the photovoltaic, the energy storage battery is charged through the positive connecting ring and the negative connecting ring of the power supply of the gyro main shaft and the positive input and output end and the negative input and output end of the battery through the positive connecting terminal and the negative connecting terminal of the bidirectional inverter respectively; and increasing the driving power of the motor/generator integrated machine, and improving the rotating speed of the gyro stabilizing platform; when the power grid is supplied with power instantaneously, the gyro stabilizing platform drives the gyro main shaft to drive the generator of the motor/generator integrated machine to generate power quickly, so as to support the power grid; when the power grid needs to be supported continuously, the energy storage battery supplies power to the power grid through the positive power connecting ring and the negative power connecting ring of the gyro main shaft and the positive wiring terminal and the negative wiring terminal of the bidirectional inverter.
The invention also provides a floating type photovoltaic power generation, energy storage and gyro stability control method, which comprises the following steps:
step 1, when surplus electricity exists in the photovoltaic power generation, the photovoltaic power generation charges an energy storage battery through a bidirectional inverter respectively, and the driving power of a motor is increased through an electric/power generation integrated machine, so that the rotating speed of a gyro stabilizing platform is improved;
step 4, when the surge is greater than the upper limit and the rotation speed of the gyro stabilizing platform is not lower than the lower limit rotation speed, the rotation speed of the energy storage battery is increased through a driving motor of the motor/generator integrated machine, so that the rotation speed of the gyro stabilizing platform is increased, and the photovoltaic array is kept in a stable state;
and 6, generating reverse thrust to inhibit water body fluctuation exceeding the upper limit by controlling 360-degree cradle head and electric propeller three-dimensional control.
It is known that the surge amplitude is proportional to wind, and when the floating photovoltaic is designed, under the condition that the surge amplitude is smaller than a certain level, the floating photovoltaic can be considered to ensure certain stability of the support when the gyro rotating speed is low or static, and under the condition that the wind power is larger than a certain level, the gyro rotating speed is started or accelerated to ensure the stability of the support. By adopting the method, the over design of the balance of the bracket can be reduced, and the relative cost is reduced.
The beneficial effects are that:
1) The structural stability of the floating type photovoltaic is improved according to the principle of a gyroscope;
2) The energy storage battery is adopted to balance the weight of the gyro stabilizing platform, so that on one hand, the structural stability of the floating type photovoltaic is improved, and on the other hand, the stability of a power grid is improved through the charge and discharge of the energy storage battery;
3) According to the principle of flywheel, the power grid is supported rapidly, and the speed can be in millisecond level;
4) The optimal tracking of the photovoltaic array and the position stability of the photovoltaic array are guaranteed, and meanwhile, fluctuation exceeding the upper limit is restrained through reverse thrust.
Drawings
The invention is further described below with reference to the drawings and detailed description.
FIG. 1 is a block diagram of a floating photovoltaic power generation, energy storage and gyro stabilization system of the present invention;
FIG. 2 is a cross-sectional structural diagram of a floating photovoltaic energy storage tracking pontoon;
fig. 3 is a schematic diagram of an energy storage power generation unit.
Wherein: the power supply system comprises a main shaft 1, a gyro stabilizing platform 2, an energy storage tracking pontoon 3, a flexible buffer 4, a motor/generator integrated machine 5, a photovoltaic bracket 6, a photovoltaic array 7, a bidirectional inverter 8, a power supply positive connection ring 9, a power supply negative connection ring 10, a negative connection terminal 11, a positive connection terminal 12, an energy storage battery 13, a 360-degree cradle head 14, an electric propeller 15, a battery input/output negative terminal 16, a battery input/output positive terminal 17, a lower bearing 18, an upper bearing 19 and a supporting pontoon 20.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 and 2, the floating photovoltaic power generation, energy storage and gyro stabilization system of the present invention mainly includes: the photovoltaic system comprises a photovoltaic array 7, a pontoon unit, a gyro stabilizing unit, an energy storage power generation unit, a solar tracking unit and a photovoltaic bracket 6.
The buoy unit consists of a plurality of supporting buoys 20 and a plurality of energy storage tracking buoys 3, and is distributed according to the structure of the photovoltaic array 7, wherein the energy storage tracking buoys 3 are installed in the middle of the supporting buoys 20 around the photovoltaic array in a penetrating manner. Wherein the supporting pontoon 20 and the energy-storage tracking pontoon 3 are both of an upper truncated cone lower conical structure, which can reduce the influence on longitudinal waves. The energy storage tracking pontoon 3 can be a rigid sealed shell, and the interior of the energy storage tracking pontoon is subjected to vacuum treatment, so that the friction resistance between the gyroscope and air can be reduced, but the cost is relatively high. The inflatable pontoon is made of engineering plastic, the relative cost is relatively low, but the stability of the gyro stabilizing unit is relatively poor due to low air resistance speed.
The gyro stabilizing unit is vertically arranged in the round platform structure at the upper part of each energy storage tracking pontoon 3. The photovoltaic bracket 6 is arranged on the outer top of the pontoon and the energy storage tracking pontoon 3.
The energy storage power generation unit comprises an energy storage battery 13, a motor/generator integrated machine 5, a bidirectional inverter 8, a gyro stabilizing platform 2 and a gyro main shaft 1. The upper end of the gyro main shaft 1 is connected with the motor/generator integrated machine 5, the lower end of the main shaft 1 is sealed with an upper bearing 19 through the upper end of the energy storage tracking pontoon 3, and the lower end of the main shaft 1 penetrates through the center of the gyro stabilizing platform 2 and is connected with the bottom of the energy storage tracking pontoon 3 through a lower bearing 18. The gyro main shaft 1 is coaxial with and fixedly connected with the gyro stabilizing platform 2. The upper end of the gyro main shaft 1 is provided with a variable-speed electric/power generation integrated machine 5, and the purpose is that a motor of the electric/power generation integrated machine 5 drives the gyro main shaft 1 to drive the gyro stabilizing platform 2 to rotate, so that the speed of the gyro stabilizing platform 2 is improved, the rotational inertia of the gyro stabilizing platform 2 is increased, and the stability of the photovoltaic bracket 6 is ensured. And otherwise, the gyro unit drives the motor of the electric/power generation integrated machine 5 to quickly support the power grid.
As shown in fig. 3, the energy storage battery 13 is uniformly arranged on the gyro stabilization platform 2, and the battery input and output positive end 17 is connected with the positive wiring terminal 12 of the bidirectional inverter 8 through the positive power supply connecting ring 9 of the gyro main shaft 1; the battery input/output negative terminal 16 is connected with the negative wiring terminal 11 of the bidirectional inverter 8 through the power negative connecting ring 10 of the gyro spindle 1. When surplus electricity exists in the photovoltaic, the energy storage battery 13 is charged through the positive connecting ring 9 and the negative connecting ring 10 of the power supply of the gyro main shaft 1 through the positive connecting terminal 12 and the negative connecting terminal 11 of the bidirectional inverter 8 and through the positive input and output end 17 and the negative input and output end 16 of the battery; and driving power of the motor of the electric/power generation integrated machine 5 is increased, and the rotating speed of the gyro stabilizing platform 2 is improved. When the power grid is instantly supported and supplied with power, the gyro stabilizing platform 2 drives the gyro main shaft 1 to drive the generator of the motor/generator integrated machine 5 to rapidly generate power, and the principle of the power grid is the same as that of a flywheel. When the power grid needs to be supported continuously, the energy storage battery 13 supplies power to the power grid through the positive power connection ring 9 and the negative power connection ring 10 of the gyro spindle 1 and through the positive wiring terminal 12 and the negative wiring terminal 11 of the bidirectional inverter 8.
The purpose of weighting the gyro stabilization platform 2 through the energy storage battery 13 is as follows: on the one hand based on the principle of rotational kinetic energy
Providing mass m of gyroscopic stabilized platform 2 Battery cell The purpose of stabilizing the gyro stabilizing unit is achieved, and meanwhile, the weight potential energy inertia can offset the fluctuation of a part of longitudinal surge. On the other hand, surplus energy storage and grid support are provided by the energy storage battery 13.
The solar tracking unit is an electric propeller 15, is connected with the outer bottom of the energy storage tracking pontoon 3 through a 360-degree holder 14, and aims to change the horizontal direction of the energy storage tracking pontoon 3 through controlling the 360-degree holder 14 and the electric propeller 15, so that the photovoltaic array 7 is controlled to keep the optimal solar irradiation intensity and the position of the photovoltaic array 7 stable, and simultaneously, the 360-degree holder 14 and the electric propeller 15 are controlled in a three-dimensional mode to generate reverse thrust to inhibit water body fluctuation exceeding the upper limit.
The photovoltaic bracket 6 comprises a flexible buffer 4 and a bracket, wherein the buffer 4 is arranged at one end of the bracket, is positioned at the outer upper part of the supporting pontoon 20, and is positioned at the position surrounding the gyro main shaft 1 with the outer upper part of the energy storage tracking pontoon 3. The other end of the bracket is connected with the photovoltaic array 7. The flexible buffer 4 mainly overcomes a surge with a certain longitudinal amplitude and reduces the up-and-down vibration of the photovoltaic array 7.
The principle of the invention is as follows: based on gyroscope characteristics and a rotational kinetic energy formula, the method is as follows
Counterweight party adopting energy storage batteryThe quality of the gyro platform is improved, the gyro platform is driven to rotate through residual electricity, the stability of the energy storage tracking pontoon bracket is guaranteed, and the influence of surge on the fluctuation of the photovoltaic array is overcome. On the other hand, the energy storage battery is used for providing residual electricity energy storage and supporting the power grid, and meanwhile, the energy storage battery also has the flywheel energy storage function, namely, the gyro unit rotates and the kinetic energy drives the engine to rapidly support the power grid. In order to ensure the maximum irradiation tracking of the floating photovoltaic, an axial-flow propeller is controlled to change the horizontal direction of the energy storage tracking pontoon 3, so that the energy storage tracking pontoon is kept synchronous with the sun. Wherein ω is gyro angular velocity; e (E) Gyroscope Is rotational kinetic energy; m is m Battery cell Is the cell quality infinitesimal; r is the radius of the gyro platform; m is M Battery cell Is the battery mass distribution.
The control method of the floating type photovoltaic power generation, energy storage and gyro stabilization system comprises the following steps:
and step 1, when surplus electricity exists in the photovoltaic power generation, the energy storage battery 13 is charged by the photovoltaic power generation through the bidirectional inverter 8, the driving power of a motor is increased through the electric/power generation integrated machine 5, and the rotating speed of the gyro stabilizing platform is improved.
And 2, when the power grid is supported instantaneously and the rotating speed of the gyro stabilizing platform 2 is larger than the lower limit rotating speed, the gyro stabilizing platform 2 drives the generator of the motor/generator integrated machine 5 to generate power, and the power grid is supported rapidly, and the principle of the power grid is the same as flywheel energy storage.
And 3, when the power grid needs to be supported continuously, and the residual electric quantity of the energy storage battery 13 is larger than the lower limit of the residual electric quantity, the energy storage battery 13 supplies power to the power grid through the bidirectional inverter 8.
And 4, when the surge is greater than the upper limit and the rotation speed of the photovoltaic array is not lower than the lower limit rotation speed, the rotation speed of the energy storage battery 13 is increased through the driving motor of the motor/generator integrated machine 5, so that the rotation speed of the gyro stabilizing platform is increased, and the photovoltaic array is kept in a stable state.
And 5, in order to ensure the stability of the floating type photovoltaic irradiation intensity and the photovoltaic array position, the controller controls the electric propeller 15 to change the horizontal angle of the energy storage tracking pontoon 3, and the floating type photovoltaic maximum irradiation intensity is kept synchronous with the solar motion.
And 6, three-dimensional control is performed by controlling the 360-degree cradle head 14 and the electric propeller 15, so that reverse thrust is generated to inhibit water body fluctuation exceeding the upper limit.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A floating photovoltaic power generation, energy storage and gyro stabilization system is characterized in that: the photovoltaic power generation system comprises a photovoltaic array, a pontoon unit, a gyro stabilizing unit, an energy storage power generation unit, a solar tracking unit and a photovoltaic bracket;
the buoy unit consists of a plurality of supporting buoys and a plurality of energy storage tracking buoys, and is distributed according to a photovoltaic array structure, wherein the tracking buoys are installed in the middle of the supporting buoys around the photovoltaic array in a penetrating manner;
the gyro stabilizing units are vertically arranged in each energy storage tracking pontoon; the photovoltaic bracket is arranged at the outer top parts of the energy storage tracking pontoon and the supporting pontoon;
the energy storage power generation unit comprises an energy storage battery, a motor/generator integrated machine, a bidirectional inverter, a gyro stabilizing platform and a gyro main shaft; the upper end of the main shaft of the gyroscope is connected with the motor/generator integrated machine, the lower end of the main shaft is sealed with an upper bearing through the upper end of the energy storage tracking pontoon, and the main shaft penetrates through the center of the gyroscope stabilizing platform and is connected with the bottom of the energy storage tracking pontoon through a lower bearing; the gyro main shaft is coaxial with and fixedly connected with the gyro stabilizing platform; the upper end of the gyro main shaft is provided with a variable-speed electric/power generation integrated machine;
the solar tracking unit is an electric propeller and is connected with the outer bottom of the energy storage tracking pontoon through a 360-degree holder, and the purpose is to change the horizontal direction of the energy storage tracking pontoon through controlling the 360-degree holder and the electric propeller, so that the photovoltaic array is controlled to keep the optimal solar irradiation intensity and the position stability of the photovoltaic array, and meanwhile, the fluctuation exceeding the upper limit is restrained through reverse thrust;
the photovoltaic bracket comprises a flexible buffer and a bracket, wherein the buffer is arranged at one end of the bracket, is positioned at the position surrounding a main shaft of the top at the outer upper part of the energy storage tracking pontoon, and is positioned at the outer upper part of the supporting pontoon; the other end of the photovoltaic bracket is connected with the photovoltaic array; the flexible buffer overcomes a surge with a certain longitudinal amplitude, and reduces the up-and-down vibration of the photovoltaic array.
2. A floating photovoltaic power generation, energy storage and gyro stabilization system according to claim 1, characterized in that: the energy storage tracking pontoon and the supporting pontoon are both of conical structures at the lower part of the upper circular truncated cone, the energy storage tracking pontoon is a rigid sealing shell, and the inside is subjected to vacuum treatment or is an inflatable pontoon.
3. A floating photovoltaic power generation, energy storage and gyro stabilization system according to claim 1, characterized in that: the energy storage battery is uniformly arranged on the gyro stabilizing platform, and the positive input and output ends of the battery are connected with the positive terminal of the bidirectional inverter through the positive power supply connecting ring of the gyro main shaft; the negative input and output ends of the battery are connected with the negative connecting terminal of the bidirectional inverter through a negative power supply connecting ring of the gyro main shaft; when surplus electricity exists in the photovoltaic, the energy storage battery is charged through the positive connecting ring and the negative connecting ring of the power supply of the gyro main shaft and the positive input and output end and the negative input and output end of the battery through the positive connecting terminal and the negative connecting terminal of the bidirectional inverter respectively; and increasing the driving power of the motor/generator integrated machine, and improving the rotating speed of the gyro stabilizing platform; when the power grid is supplied with power instantaneously, the gyro stabilizing platform drives the gyro main shaft to drive the generator of the motor/generator integrated machine to generate power quickly, so as to support the power grid; when the power grid needs to be supported continuously, the energy storage battery supplies power to the power grid through the positive power connecting ring and the negative power connecting ring of the gyro main shaft and the positive wiring terminal and the negative wiring terminal of the bidirectional inverter.
4. A control method of a floating photovoltaic power generation, energy storage and gyro stabilization system according to one of claims 1-3, characterized by the steps of:
step 1, when surplus electricity exists in the photovoltaic power generation, the photovoltaic power generation charges an energy storage battery through a bidirectional inverter respectively, and the driving power of a motor is increased through an electric/power generation integrated machine, so that the rotating speed of a gyro stabilizing platform is improved;
step 2, when the power grid is supported instantaneously and the rotating speed of the gyro stabilizing platform is larger than the lower limit rotating speed, the gyro stabilizing platform drives a generator of the motor/generator integrated machine to generate power, and the power grid is supported rapidly;
step 3, when the power grid is required to be supported continuously, and the residual electric quantity of the energy storage battery is larger than the lower limit of the residual electric quantity, the energy storage battery supplies power to the power grid through the bidirectional inverter;
step 4, when the surge is greater than the upper limit and the rotation speed of the gyro stabilizing platform is not lower than the lower limit rotation speed, the rotation speed of the energy storage battery is increased through a driving motor of the motor/generator integrated machine, so that the rotation speed of the gyro stabilizing platform is increased, and the photovoltaic array is kept in a stable state;
step 5, controlling the electric propeller to change the horizontal angle of the energy storage tracking pontoon through the GPS positioning controller to ensure the floating photovoltaic irradiation intensity and the position stability of the photovoltaic array, and keeping the floating photovoltaic maximum irradiation intensity synchronous with the solar motion and the position stability of the photovoltaic array;
and 6, generating reverse thrust to inhibit water body fluctuation exceeding the upper limit by controlling 360-degree cradle head and electric propeller three-dimensional control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310098256.XA CN116131727A (en) | 2023-02-10 | 2023-02-10 | Floating type photovoltaic power generation, energy storage and gyro stabilization system and control method |
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| CN202310098256.XA CN116131727A (en) | 2023-02-10 | 2023-02-10 | Floating type photovoltaic power generation, energy storage and gyro stabilization system and control method |
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