CN118232534A - Gravity energy storage system and gravity energy storage power station - Google Patents
Gravity energy storage system and gravity energy storage power station Download PDFInfo
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- CN118232534A CN118232534A CN202410351878.3A CN202410351878A CN118232534A CN 118232534 A CN118232534 A CN 118232534A CN 202410351878 A CN202410351878 A CN 202410351878A CN 118232534 A CN118232534 A CN 118232534A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G3/00—Other motors, e.g. gravity or inertia motors
- F03G3/087—Gravity or weight motors
- F03G3/094—Gravity or weight motors specially adapted for potential energy power storage stations; combinations of gravity or weight motors with electric motors or generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy specially adapted for power networks
- H02J15/30—Systems for storing electric energy specially adapted for power networks using storage of inertial or mechanical energy, e.g. using flywheels
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; 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 networks by storage of energy
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- Power Engineering (AREA)
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Abstract
本发明涉及储能设备技术领域，公开了重力储能系统及重力储能电站，其中该重力储能系统，包括：支撑塔和多个起重设备。多个起重设备设于支撑塔上，每个起重设备的一端活动设于支撑塔的顶部，并能够沿支撑塔的轴线转动，且多个起重设备彼此呈夹角设置，每个起重设备设有发电电动一体机和起升机构，发电电动一体机与起升机构电连接，并适于与新能源发电站电连接；重力储能系统具有储能状态和释能状态，在储能状态，发电电动一体机驱动起升机构带动物料上升并堆放，在释能状态，物料依靠自重下落且驱动发电电动一体机发电并传输至用电设备。本发明能够实现电网系统的削峰填谷，提高新能源发电站的使用稳定性，还能够降低能耗和使用成本。
The present invention relates to the technical field of energy storage equipment, and discloses a gravity energy storage system and a gravity energy storage power station, wherein the gravity energy storage system comprises: a support tower and a plurality of lifting devices. A plurality of lifting devices are arranged on the support tower, one end of each lifting device is movably arranged on the top of the support tower, and can rotate along the axis of the support tower, and a plurality of lifting devices are arranged at an angle to each other, each lifting device is provided with a generator-electric integrated machine and a lifting mechanism, the generator-electric integrated machine is electrically connected to the lifting mechanism, and is suitable for being electrically connected to a new energy power station; the gravity energy storage system has an energy storage state and an energy release state, in the energy storage state, the generator-electric integrated machine drives the lifting mechanism to drive the material to rise and stack, in the energy release state, the material falls by its own weight and drives the generator-electric integrated machine to generate electricity and transmit it to the electrical equipment. The present invention can realize the peak shaving and valley filling of the power grid system, improve the use stability of the new energy power station, and can also reduce energy consumption and use costs.
Description
Technical Field
The invention relates to the technical field of energy storage equipment, in particular to a gravity energy storage system and a gravity energy storage power station.
Background
Ports are an important ring of trade globalization, and belong to material hubs. The loading and unloading process of port materials consumes a great deal of energy. In order to meet the low carbonization requirement, the conventional port gradually adopts clean energy sources such as wind power, photovoltaic and the like to replace the traditional thermal power generation.
However, clean energy sources such as wind power, photovoltaic and the like are greatly influenced by climatic conditions, fluctuation is easy to generate, and the self-adjusting capacity and the inertia supporting capacity are poor, so that the stability is poor when a new energy power station is adopted in a port.
Disclosure of Invention
In view of the above, the invention provides a gravity energy storage system and a gravity energy storage power station, which realize peak clipping and valley filling of a power grid system through conversion of material gravitational potential energy and electric energy so as to solve the problem that a new energy power station is greatly influenced by environment and has poor stability.
In a first aspect, the present invention provides a gravity energy storage system comprising:
A support tower;
The lifting equipment is arranged on the supporting tower, one end of each lifting equipment is movably arranged at the top of the supporting tower and can rotate along the axis of the supporting tower, the lifting equipment is arranged at an included angle, and each lifting equipment is provided with a power generation electric integrated machine and a lifting mechanism, and the power generation electric integrated machine is electrically connected with the lifting mechanism and is suitable for being electrically connected with a new energy power station;
The gravity energy storage system is provided with an energy storage state and an energy release state, in the energy storage state, the power generation and electric integrated machine drives the lifting mechanism to drive the materials to rise and stack, and in the energy release state, the materials fall by means of dead weight and drive the power generation and electric integrated machine to generate power and transmit the power to electric equipment.
The beneficial effects are that: when the generated energy of the new energy power station is larger than the consumed energy of electric equipment, the novel energy power station enters an energy storage state, and the power generation and electric integrated machine is used as a motor to drive a lifting mechanism to drive materials to rise from a low place to a high place for stacking, so that the novel energy power station is converted into gravitational potential energy of the materials. When the consumption of electric equipment is larger than the generated energy of a new energy power station, the electric power generation and electric integrated machine enters an energy release state, and is used as a generator, materials fall from a high place to a low place by means of dead weight to drive the electric power generation and electric integrated machine to generate electricity, and gravitational potential energy is converted into electric energy to provide power for the electric equipment, so that peak clipping and valley filling of a power grid system can be realized, the use stability of the new energy power station is improved, the energy consumption and the use cost can be reduced, and low-carbon operation is realized. In addition, a plurality of lifting devices are rotatably distributed at the top end of the supporting tower, so that the generated energy and the storage amount of materials can be improved, and the lifting device is balanced in stress and stable in structure.
In an alternative embodiment, the top of the support tower is provided with an inner gear ring and a driving motor, one end of each lifting device is provided with an outer gear, the outer gear is meshed with the inner gear ring, and the driving motor is used for driving the lifting device to rotate around the top of the support tower.
The beneficial effects are that: the lifting equipment can rotate around the top of the supporting tower by matching with the external gear and the annular gear under the drive of the driving motor, so that materials can be extracted within a 360-degree dead-angle-free range, the storage range of the materials in an energy storage state is enlarged, and the generated energy in an energy release state is further improved.
In an alternative embodiment, a plurality of hoisting devices are arranged in pairs, each pair of hoisting devices being arranged facing away from the top of the support tower, each pair of hoisting devices being operated in a stored energy state in opposite or facing away from each other.
The beneficial effects are that: the lifting devices are arranged in pairs, each pair of lifting devices is arranged at the top of the supporting tower in a back-to-back mode, and in an energy storage state, each pair of lifting devices runs in opposite directions or back-to-back mode, so that the stress uniformity of the supporting tower can be improved, the stability of the supporting tower is improved, and the supporting tower is prevented from overturning.
In an alternative embodiment, the plurality of lifting devices are evenly arranged on top of the support tower.
The beneficial effects are that: the plurality of hoisting equipment are evenly arranged at the top of the supporting tower, so that the stress uniformity and stability of the supporting tower are further improved.
In an alternative embodiment, adjacent lifting devices drop material sequentially in the de-energized state.
The beneficial effects are that: in the energy release state, adjacent lifting equipment sequentially drops materials, so that the uniformity of the generated energy can be improved, uninterrupted power generation can be realized, and the power supply stability of the new energy power station is improved.
In an alternative embodiment, each lifting device comprises:
one end of the lifting arm is rotatably arranged at the top of the supporting tower, a positioning plate is arranged on the lifting arm, and the positioning plate is positioned above the material;
The carrying platform is movably arranged on the crane boom and can move along the length direction of the crane boom, the lifting mechanism is arranged at the lower end of the carrying platform through the slewing mechanism, the carrying platform is provided with a transmitting end and a receiving end, and the output shaft of the carrying platform is also provided with a rotary encoder;
The controller is electrically connected with the transmitting end, the receiving end and the rotary encoder respectively;
In the case that the positioning plate is located between the transmitting end and the receiving end, the signal of the receiving end is blocked, and the receiving end feeds back the detection signal to the controller.
The beneficial effects are that: when the carrying platform arrives right above the material, the positioning plate is positioned between the transmitting end and the receiving end, signals of the transmitting end are blocked by the positioning plate, the receiving end can not receive signals of the transmitting end any more, detection signals are fed back to the controller, and the controller judges that the carrying platform arrives right above the material, so that the lifting mechanism can extract and carry the material at a designated position. In addition, the output shaft of the carrying platform is also provided with a rotary encoder, and the position of the carrying platform on the crane arm can be accurately positioned through the rotary encoder. After receiving the detection signal, the controller synchronizes the read value of the rotary encoder with the actual position represented by the positioning plate, and improves the reliability and accuracy of the rotary encoder.
In an alternative embodiment, the lifting mechanism comprises:
the winding drum is connected with the power generation and electric integrated machine through a speed reducer;
one end of the steel wire rope is connected with the winding drum, and the other end of the steel wire rope is connected with the material through the lifting appliance.
The beneficial effects are that: in an energy storage state, the power generation electric integrated machine drives the winding drum to rotate after being decelerated by the speed reducer, and the winding drum drives materials on the lifting appliance to be lifted to a high position from a low position by the steel wire rope, so that redundant electric energy is converted into gravitational potential energy of the materials. In the energy release state, the material falls from a high position to a low position by means of self gravity, and the winding drum is reversely driven to rotate by the steel wire rope, and then is driven by the winding drum to generate electricity by the power generation and electric integrated machine, so that the gravitational potential energy of the material is converted into electric energy and is transmitted to electric equipment, and the deficiency electric quantity is filled.
In an alternative embodiment, the carrying platform is further provided with a laser range finder, and the lifting appliance is provided with a measuring plate.
The beneficial effects are that: when the laser of the laser range finder irradiates on the measuring plate, the laser is reflected back to the laser range finder, the distance between the measuring plate and the laser range finder is calculated by measuring the reflection time, the distance between the lifting appliance and the carrying platform can be obtained, the mutual collision between the lifting appliance and materials can be avoided, and the operation safety is improved.
In an alternative embodiment, a twist lock is also provided on the spreader.
The beneficial effects are that: the lifting appliance is also provided with a rotary lock, so that the lifting appliance is convenient and quick to connect or separate with materials.
In a second aspect, the present invention also provides a gravity energy storage plant comprising:
the new energy power station is used for supplying power to the electric equipment;
The gravity energy storage system is characterized in that the power generation and electric integrated machine is electrically connected with a new energy power station;
The gravity energy storage system is in an energy storage state when responding to surplus electric quantity of the new energy power station;
and the gravity energy storage system is in an energy release state when responding to the electric quantity deficiency of the new energy power station.
The beneficial effects are that: because the gravity energy storage power station includes gravity energy storage system, have the same effect with gravity energy storage system, be greater than the consumer consumption at new energy power station's generated energy promptly, when leading to the surplus of electric quantity, get into the energy storage state, the electric all-in-one that generates electricity drives hoisting mechanism as the motor and drives the material and rise to the eminence and stack from the low side, converts the gravitational potential energy of material into. When the consumption of electric equipment is larger than the generated energy of a new energy power station and the electric quantity is deficient, the electric power station enters an energy release state, the electric power generation and electric integrated machine is used as a generator, the material falls from a high place to a low place by means of dead weight to drive the electric power generation and electric integrated machine to generate electricity, gravitational potential energy is converted into electric energy and power is provided for the electric equipment, so that peak clipping and valley filling of a power grid system can be realized, the use stability of the new energy power station is improved, the energy consumption and the use cost can be reduced, and low-carbon operation is realized. In addition, a plurality of lifting devices are rotatably distributed at the top end of the supporting tower, so that the generated energy and the storage amount of materials can be improved, and the lifting device is balanced in stress and stable in structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a gravity energy storage system according to an embodiment of the present invention;
FIG. 2 is a top view of one of the gravity energy storage systems shown in FIG. 1;
FIG. 3 is a schematic view of a partial structure of a support tower and a lifting device of a gravity energy storage system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a gravity energy storage system in an energy storage state according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a gravity energy storage system in a released state according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a portion of a lifting device of a gravity energy storage system according to an embodiment of the present invention;
Fig. 7 is a schematic diagram of a positional relationship between a laser rangefinder and a measurement plate according to an embodiment of the invention.
Reference numerals illustrate:
1. A support tower; 101. an inner gear ring; 2. a lifting device; 201. an external gear; 202. a boom; 203. a positioning plate; 204. a carrying platform; 205. a transmitting end; 206. a receiving end; 3. the power generation and electric integrated machine; 4. a lifting mechanism; 401. a reel; 402. a speed reducer; 403. a wire rope; 404. a lifting appliance; 5. a laser range finder; 6. a measuring plate; 7. and (5) material.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The novel energy power station is greatly influenced by the environment, is easy to generate fluctuation, has poor self-adjusting capacity and inertia supporting capacity, and has poor stability when adopting the novel energy power station in a port. According to the invention, the gravity energy storage system lifts or drops the material, when the electric quantity of the new energy power station is surplus, the consumed electric energy is converted into the gravitational potential energy of the material, when the electric quantity of the new energy power station is deficient, the gravitational potential energy of the material is converted into the electric energy for filling the deficiency, the peak clipping and valley filling of the power grid system are realized, and the use stability of the new energy power station is improved.
Embodiments of the present invention are described below with reference to fig. 1 to 7.
According to an embodiment of the present invention, in one aspect, there is provided a gravity energy storage system, mainly including: a support tower 1 and a plurality of lifting devices 2. The lifting equipment 2 is arranged on the supporting tower 1, one end of each lifting equipment 2 is movably arranged at the top of the supporting tower 1 and can rotate along the axis of the supporting tower 1, the lifting equipment 2 is arranged at an included angle, each lifting equipment 2 is provided with a power generation electric integrated machine 3 and a lifting mechanism 4, and the power generation electric integrated machine 3 is electrically connected with the lifting mechanism 4 and is suitable for being electrically connected with a new energy power station. The gravity energy storage system is provided with an energy storage state and an energy release state, in the energy storage state, the power generation electric integrated machine 3 drives the lifting mechanism 4 to drive the materials 7 to ascend and stack, and in the energy release state, the materials 7 fall by means of dead weight and drive the power generation electric integrated machine 3 to generate electricity and transmit the electricity to electric equipment.
When the generated energy of the new energy power station is larger than the consumed energy of electric equipment, the novel energy power station enters an energy storage state, and the power generation and electric integrated machine 3 is used as a motor to drive the lifting mechanism 4 to drive the materials 7 to rise from low to high for stacking, so that gravitational potential energy of the materials 7 is converted. When the consumption of electric equipment is larger than the generated energy of a new energy power station, the electric equipment enters an energy release state, the electric power generation and electric integrated machine 3 serves as a generator, the material 7 falls from a high place to a low place by means of dead weight to drive the electric power generation and electric integrated machine 3 to generate electricity, gravitational potential energy is converted into electric energy and power is provided for the new energy power station, so that peak clipping and valley filling of a power grid system can be realized, the use stability of the new energy power station is improved, the energy consumption and the use cost can be reduced, the low-carbon operation is realized, and no environmental pollution is caused.
In addition, a plurality of lifting devices 2 are rotatably distributed at the top end of the supporting tower 1, so that the generated energy and the storage amount of materials 7 can be improved, and the lifting device is balanced in stress and stable in structure. The storage yard of the material 7 is integrally arranged with the energy storage, and the land space can be saved.
Specifically, the gravity energy storage system provided by the embodiment of the invention can be applied to a port environment. The lifting device 2 may be a shore container crane, the material 7 being a container. In order to achieve uninterrupted power generation, it is necessary to keep the material 7 lifted and lowered at all times.
It should be noted that, the connection mode of the supporting tower 1 and the lifting device 2 is not limited in the embodiment of the present invention, and any existing connection mode may be selected.
In one embodiment, as shown in fig. 2 and 3, the top of the support tower 1 is provided with an inner gear ring 101 and a driving motor (not shown). An external gear 201 is arranged at one end of each lifting device 2, the external gear 201 is meshed with the annular gear 101, and a driving motor is arranged on the supporting tower 1 and is used for driving the lifting devices 2 to rotate around the top of the supporting tower 1. The lifting equipment 2 can rotate around the top of the supporting tower 1 by matching the external gear 201 with the annular gear 101 under the drive of the driving motor, so that the materials 7 can be extracted in a 360-degree dead-angle-free range, the storage range of the materials 7 in an energy storage state is enlarged, and the generated energy in an energy release state is further improved.
It should be noted that, the number of the hoisting devices 2 is not limited in the embodiment of the present invention, and two, three or more than three may be selectively set according to the need. The more the hoisting equipment 2 is, the more the materials 7 can be lifted and fallen, the shorter the energy storage operation time is, the more uniform the generated energy is, the uninterrupted power generation can be realized, the use cost is increased, and the higher the requirement on the geological foundation is.
In one embodiment, a plurality of lifting devices 2 are arranged in pairs, each pair of lifting devices 2 being arranged facing away from the top of the support tower 1, each pair of lifting devices 2 being operated in a stored energy state in opposite or facing away from each other. The stress uniformity of the support tower 1 can be improved, so that the stability of the support tower 1 is improved, and the support tower 1 is prevented from overturning.
Illustratively, as shown in fig. 1 and 2, the lifting devices 2 are provided in six to form three pairs, which can avoid adversely affecting the geological basis of the support tower 1 while ensuring the power generation efficiency. The material 7 is piled up in a plurality of rings from inside to outside in the circumferential direction and the radial direction of the support tower 1.
In the stored energy state, the lifting mechanism 4 stacks the outer containers to the inner side, as shown in fig. 4. As shown in fig. 5, in the energy release state, the containers originally located at the high position are stacked from the inner side to the outer side sequentially, so that the overall height of the containers is reduced, and gravitational potential energy is converted into electric energy.
In one embodiment, a plurality of lifting devices 2 are evenly arranged on top of the support tower 1. Further improving the stress uniformity and stability of the support tower 1. In particular, adjacent lifting devices 2 are at the same angle to each other.
In one embodiment, in the energy release state, the adjacent lifting devices 2 sequentially drop the material 7, so that the uniformity of the generated energy can be improved, and uninterrupted power generation can be realized, so that the power supply stability of the new energy power station is improved.
In order to ensure the safety of the stacking process of the materials 7, the gravity center deviation of the materials 7 in the vertical direction cannot be too large, so that the stacking position of the container needs to be accurately positioned. The stacking precision of the ground layer is within +/-50 mm; the stacking precision in the width direction of the material 7 is about + -30 mm, and the stacking precision in the length direction of the material 7 is about + -50 mm; the error value of the overall stacking of the material 7 is controlled to be about + -100 mm.
It should be noted that the present embodiment is not limited to the hoisting device 2.
In one embodiment, as shown in fig. 4, 5 and 6, each lifting device 2 comprises: a boom 202 and a carrying platform 204. One end of the boom 202 is rotatably provided at the top of the support tower 1, and a positioning plate 203 (FLAG plate) is provided on the boom 202. The positioning plate 203 is located above the material 7. The carrying platform 204 is movably arranged on the lifting arm 202 and can move along the length direction of the lifting arm 202, and the lifting mechanism 4 is arranged at the lower end of the carrying platform 204 through a slewing mechanism. The carrying platform 204 is provided with a transmitting end 205 and a receiving end 206. The output shaft of the carrying platform 204 is also provided with a rotary encoder. The controller is electrically connected to the transmitting end 205, the receiving end 206, and the rotary encoder, respectively. In the case where the positioning plate 203 is located between the transmitting end 205 and the receiving end 206, the signal of the receiving end 206 is blocked, and the receiving end 206 feeds back the detection signal to the controller.
Specifically, the boom 202 is provided with rails along its length on which the carriage platform 204 can reciprocate. The carrying platform 204 may take the form of a self-propelled or a towed drive. Both the transmitting end 205 and the receiving end 206 move with the carrying platform 204. Support rods are provided on both sides of the carrying platform 204, and extend to the boom 202, and the transmitting end 205 and the receiving end 206 are mounted at the support rods so that the transmitting end 205 and the receiving end 206 can be located on the left and right sides or the upper and lower sides of the positioning plate 203, respectively.
In the embodiment of the invention, the positioning plate 203 is positioned right above the material 7, when the carrying platform 204 reaches right above the material 7, the positioning plate 203 is positioned between the transmitting end 205 and the receiving end 206, the signal of the transmitting end 205 is blocked by the positioning plate 203, the receiving end 206 can not receive the signal of the transmitting end 205 any more, and feeds back the detection signal to the controller, and the controller judges that the carrying platform 204 reaches right above the material 7, so that the lifting mechanism 4 can extract and carry the material 7 at a designated position.
In addition, a rotary encoder is further arranged on a wheel shaft of the travelling mechanism of the carrying platform 204, and the position of the carrying platform 204 on the crane arm 202 can be accurately positioned through the rotary encoder. After receiving the detection signal, the controller synchronizes the read value of the rotary encoder with the actual position represented by the positioning plate 203, thereby improving the reliability and accuracy of the rotary encoder.
If the reading value given by the rotary encoder is right above the material 7, but the receiving end 206 does not send the detection signal to the controller, the controller determines that an error occurs, so that the embodiment of the invention can also play a role in alarming the dislocation of the material 7 by matching the transmitting end 205 and the receiving end 206 with the positioning plate 203 and the rotary encoder.
The controller may select any existing controller as needed. For example, the controller may be selected from an existing controller such as a Micro Control Unit (MCU), a Central Processing Unit (CPU), an Electronic Controller Unit (ECU), etc. Of course, other conventional controllers may be selected as desired. The embodiments of the present invention are not limited in this regard.
Further, as shown in fig. 6, in one embodiment, the lifting mechanism 4 includes: a reel 401, a decelerator 402, a wire rope 403 and a spreader 404. The spool 401 is connected to the electric power generation and motor-driven integrated machine 3 via a speed reducer 402. One end of a steel wire rope 403 is connected with the winding drum 401, and the other end is connected with the material 7 through a lifting appliance 404.
Specifically, the electric power generation and motor-driven integrated machine 3 is coupled to an input shaft of the speed reducer 402 via a coupling, and the spool 401 is coupled to an output shaft of the speed reducer 402 via a coupling. One end of a steel wire rope 403 is fixed in the winding drum 401, the other end is connected with a lifting appliance 404 through pulley reversing, and the lifting appliance 404 is connected with the material 7. By the reciprocating motion of the carrying platform 204, the rotation of the lifting arm 202 and the rotation of the winding drum 401, the material 7 can move at any position in space, so that the moving range of the material 7 is improved.
In the energy storage state, the power generation and electric integrated machine 3 drives the winding drum 401 to rotate after being decelerated by the decelerator 402, and the winding drum 401 drives the material 7 on the lifting appliance 404 to be lifted from a low position to a high position by the steel wire rope 403, so that redundant electric energy is converted into gravitational potential energy of the material 7. In the energy release state, the material 7 falls from a high position to a low position by means of self gravity, the winding drum 401 is reversely driven to rotate by the steel wire rope 403, the winding drum 401 drives the power generation and electric integrated machine 3 to generate power, gravitational potential energy of the material 7 is converted into electric energy and is transmitted to electric equipment, and the deficiency electric quantity is filled.
Further, in one embodiment, as shown in fig. 7, a laser rangefinder 5 is further provided on the carrying platform 204, and a measuring plate 6 is provided on the spreader 404. When the laser of the laser range finder 5 irradiates on the measuring plate 6, the laser is reflected back to the laser range finder 5, the distance between the measuring plate 6 and the laser range finder 5 is calculated by measuring the reflection time, and the distance between the lifting appliance 404 and the carrying platform 204 can be obtained, so that the mutual collision between the lifting appliance 404 and the material 7 can be avoided, and the operation safety is improved.
As shown in fig. 7, the horizontal distance D from the laser rangefinder 5 to the measurement plate 6 is a fixed value, and the straight line L from the laser rangefinder 5 to the measurement plate 6 is a measured value. The vertical distance H from the laser rangefinder 5 to the measurement plate 6, i.e. the height of the spreader 404 to the carrying platform 204, can be calculated according to the pythagorean theorem.
The controller records the number of stacked materials 7 in each column, and the total height of the materials 7 in each stacking position can be calculated due to the consistent size of the materials 7, and then the calculated total height of the materials 7 is compared with the calculated height from the lifting appliance 404 to the carrying platform 204, so that the relative distance between the lifting appliance 404 and the materials 7 can be obtained. In addition, the controller can also be electrically connected with the power generation electric integrated machine 3, when the lifting appliance 404 is about to contact the material 7, the falling speed of the lifting appliance 404 is reduced, so that the lifting appliance 404 and the material 7 are prevented from colliding with each other, and meanwhile, the shaking amplitude of the material 7 during disassembly can be reduced.
In one embodiment, a twist lock is further provided on the lifting tool 404, so as to be convenient and quick to connect or disconnect from the material 7. The existing arbitrary structure can be selected according to the requirement, the specific setting is selected according to the actual situation, and the embodiment of the invention is not excessively limited.
According to an embodiment of the present invention, in another aspect, there is also provided a gravity energy storage power station, mainly including: new forms of energy power station and gravity energy storage system. The new energy power station is used for supplying power to the electric equipment. The power generation and electric integrated machine 3 is electrically connected with a new energy power station. And the gravity energy storage system is in an energy storage state when responding to surplus electric quantity of the new energy power station. And the gravity energy storage system is in an energy release state when responding to the electric quantity deficiency of the new energy power station.
Specifically, the new energy power station, the electric equipment and the gravity energy storage system are electrically connected with the power grid system, and are uniformly allocated by the power grid system.
Because the gravity energy storage power station includes gravity energy storage system, have the same effect with gravity energy storage system, be greater than the consumer consumption at new energy power station's generated energy promptly, when leading to the surplus of electric quantity, get into the energy storage state, the electric all-in-one that generates electricity 3 is as motor drive hoisting mechanism 4 to drive material 7 to rise to the stack from the low to the eminence, converts into the gravitational potential energy of material 7. When the consumption of electric equipment is larger than the generated energy of a new energy power station and the electric quantity is deficient, the electric power station enters an energy release state, the electric power generation and electric integrated machine 3 serves as a generator, the material 7 falls from a high place to a low place by means of dead weight, the electric power generation and electric integrated machine 3 is driven to generate electricity, gravitational potential energy is converted into electric energy and power is provided for the electric equipment, therefore, peak clipping and valley filling of a power grid system can be realized, the use stability of the new energy power station is improved, the energy consumption and the use cost can be reduced, and low-carbon operation is realized.
In addition, a plurality of lifting devices 2 are rotatably distributed at the top end of the supporting tower 1, so that the generated energy and the storage amount of materials 7 can be improved, and the lifting device is balanced in stress and stable in structure. The storage yard of the material 7 is integrally arranged with the energy storage, and the land space can be saved.
In particular, the new energy source generally refers to renewable energy sources developed and utilized on the basis of new technologies, including, but not limited to, solar energy, biomass energy, wind energy, geothermal energy, wave energy, ocean current energy, and tidal energy. The new energy power station is used for supplying power to ports, such as a photovoltaic power station using solar power generation, a wind power station using wind power generation, and the like.
The new energy power station needs to meet the operation energy consumption of the electric equipment of the port. Because the power generation source of the new energy power station is unstable, the power generation amount of the new energy power station is also unstable, and the surplus electric quantity of part of time periods is the power generation amount exceeds the power consumption of the electric equipment. And the electric quantity in part of the time period is deficient, namely the generated energy cannot meet the power consumption of the electric equipment.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A gravity energy storage system, comprising:
a support tower (1);
The lifting equipment (2) is arranged on the supporting tower (1), one end of each lifting equipment (2) is movably arranged at the top of the supporting tower (1) and can rotate along the axis of the supporting tower (1), the lifting equipment (2) are arranged at an included angle, each lifting equipment (2) is provided with a power generation electric integrated machine (3) and a lifting mechanism (4), and the power generation electric integrated machine (3) is electrically connected with the lifting mechanism (4) and is suitable for being electrically connected with a new energy power station;
The gravity energy storage system is provided with an energy storage state and an energy release state, in the energy storage state, the power generation electric integrated machine (3) drives the lifting mechanism (4) to drive the materials (7) to ascend and stack, and in the energy release state, the materials (7) fall down by means of dead weight and drive the power generation electric integrated machine (3) to generate power and transmit the power to electric equipment.
2. The gravity energy storage system according to claim 1, wherein the top of the support tower (1) is provided with an inner gear ring (101) and a driving motor, one end of each lifting device (2) is provided with an outer gear (201), the outer gear (201) is meshed with the inner gear ring (101), and the driving motor is used for driving the lifting device (2) to rotate around the top of the support tower (1).
3. Gravity energy storage system according to claim 1, characterised in that a plurality of lifting devices (2) are arranged in pairs, each pair of lifting devices (2) being arranged facing away from the top of the support tower (1), in the energy storage state each pair of lifting devices (2) running opposite or facing away from each other.
4. A gravity energy storage system according to claim 3, characterised in that a plurality of the lifting devices (2) are evenly arranged on top of the support tower (1).
5. Gravity energy storage system according to claim 4, characterised in that in the de-energized state, adjacent lifting devices (2) drop material (7) in sequence.
6. Gravity energy storage system according to any of claims 1-5, characterized in that each lifting device (2) comprises:
One end of the lifting arm (202) is rotatably arranged at the top of the supporting tower (1), a positioning plate (203) is arranged on the lifting arm (202), and the positioning plate (203) is positioned above the material (7);
The carrying platform (204) is movably arranged on the lifting arm (202) and can move along the length direction of the lifting arm (202), the lifting mechanism (4) is arranged at the lower end of the carrying platform (204), the carrying platform (204) is provided with a transmitting end (205) and a receiving end (206), and the output shaft of the carrying platform (204) is also provided with a rotary encoder;
A controller electrically connected to the transmitting end (205), the receiving end (206), and the rotary encoder, respectively;
In case the positioning plate (203) is located between the transmitting end (205) and the receiving end (206), the receiving end (206) signal is blocked, and the receiving end (206) feeds back a detection signal to the controller.
7. The gravity energy storage system according to claim 6, wherein the lifting mechanism (4) comprises:
the winding drum (401) is connected with the power generation and electric integrated machine (3) through a speed reducer (402);
and one end of the steel wire rope (403) is connected with the winding drum (401), and the other end of the steel wire rope is connected with the material (7) through a lifting appliance (404).
8. The gravity energy storage system according to claim 7, wherein the carrying platform (204) is further provided with a laser range finder (5), and the lifting appliance (404) is provided with a measuring plate (6).
9. The gravity energy storage system according to claim 7, wherein a twist lock is further provided on the spreader (404).
10. A gravity energy storage power station, comprising:
the new energy power station is used for supplying power to the electric equipment;
The gravity energy storage system according to any of claims 1 to 9, the electric power generation and motor-driven integrated machine (3) being electrically connected to the new energy power station;
The gravity energy storage system responds to surplus electric quantity of the new energy power station and enters the energy storage state;
And the gravity energy storage system responds to the electric quantity deficiency of the new energy power station, and enters the energy release state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202410351878.3A CN118232534A (en) | 2024-03-26 | 2024-03-26 | Gravity energy storage system and gravity energy storage power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410351878.3A CN118232534A (en) | 2024-03-26 | 2024-03-26 | Gravity energy storage system and gravity energy storage power station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119571776A (en) * | 2024-11-22 | 2025-03-07 | 中国电建集团华东勘测设计研究院有限公司 | Hydropower station combined mechanical gravity energy storage system and design method |
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| HU5111U (en) * | 2018-12-18 | 2020-01-28 | Tamas Szikra | Gravity energy storage system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119571776A (en) * | 2024-11-22 | 2025-03-07 | 中国电建集团华东勘测设计研究院有限公司 | Hydropower station combined mechanical gravity energy storage system and design method |
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