EP4034763A1 - Verfahren zur speicherung potentieller energie - Google Patents
Verfahren zur speicherung potentieller energieInfo
- Publication number
- EP4034763A1 EP4034763A1 EP20786483.6A EP20786483A EP4034763A1 EP 4034763 A1 EP4034763 A1 EP 4034763A1 EP 20786483 A EP20786483 A EP 20786483A EP 4034763 A1 EP4034763 A1 EP 4034763A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- energy
- storage device
- supply network
- potential energy
- energy supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- H02J3/32—Arrangements for balancing of the load in networks by storage of energy using batteries or super capacitors with converting means
Definitions
- the present invention relates to a storage device for storing energy in the form of potential energy as well as a system and a method for compensating for network fluctuations in an energy supply network.
- the known lifting storage systems use here, as is known, discrete weights that are pulled up or down within shafts or the like and thereby generate electrical power.
- the use of discrete weights has the disadvantage, however, that the weights used have to be exchanged after they have been lowered to the bottom, for example the bottom of a shaft, in order to be able to guarantee the generation of further energy. This process takes time during which no energy can be generated. This leads to undesirable downtimes during which no compensation for network fluctuations can be achieved.
- Systems are also known in which weights can be hung in and out of a transport system by means of a transport mechanism, but these systems are disadvantageously very bulky and costly.
- a storage device for storing energy in the form of potential energy which comprises at least one potential energy store for receiving, storing and releasing energy and at least one guide means for guiding the potential energy store along a guide path, the guide path within a vertical to the earth's surface arranged in the ground shaft, wherein the potential energy store wins the stored potential energy by converting kinetic energy and emits it by converting it into kinetic energy, and the kinetic energy results from a movement of the potential energy store along the guide path.
- the storage device in question is characterized in that the potential energy storage device is formed in the form of a continuous weight extending over the length of the guide path.
- the present storage device can in particular be used to compensate for network fluctuations in energy supply networks, with several storage devices according to the invention preferably being able to be interconnected or optionally switched on and off for this purpose.
- the guide path according to the invention can objectively at least partially be arranged within a shaft arranged in the ground, the shaft itself not necessarily having to be arranged completely within the ground.
- a shaft is understood to mean in particular a flea space which is arranged essentially vertically to the surface of the earth and which was preferably built by people.
- shafts for example mine shafts, oil wells, test shafts or shafts for the development of other types of storage facilities or the like can be understood.
- a continuous weight is preferably understood to be a weight composed of a plurality of interconnected units which, despite a lowering or lowering of a first number of units to the floor - for example the floor of a shaft - continues to lower potential energy via the sinking or lowering can deliver further units of continuous weight.
- the length of a guide path can in this case preferably extend at least over the entire length or depth of the shaft in question.
- the potential energy store is in the form of a rope and / or a chain.
- the potential energy store is already arranged over the entire depth or the entire guide path in the shaft in an initial state. This allows, in particular, that a maximum torque and, with constant power, the maximum power can be called up already at the beginning of the movement of the guide means along the guide path.
- the potential energy store is formed in the form of a chain, the chain preferably from a link chain and / or a roller chain and / or an inverted tooth chain is formed.
- the chain can also be designed in the form of a web chain, pant chain, pin chain, roller chain, tooth chain or the like.
- the Energy storage is formed in the form of a chain, wherein the chain is preferably formed without jamming.
- the potential energy store is formed from a metal material, preferably an iron material, in particular steel.
- the potential energy store can preferably be made of stainless steel.
- the energy store can also have a coating or a casing made of plastic or the like.
- a storage device for storing the energy store, the storage device preferably directly next to an insertion opening of the shaft is arranged.
- the storage device is preferably designed in such a way that at least a part of the energy store can be arranged within the storage device.
- the storage device can be designed, for example, in the form of a trench sunk into the ground, wherein the trench can preferably be lined with a weather-resistant material.
- the storage facility can in particular be set up in the manner of a bunker or the like.
- the guide means is designed in the form of a chain wheel and / or a cable drum.
- the guide means can be designed in particular in the form of a pocket wheel.
- the potential energy store has a beginning and an end, the beginning preferably being arranged permanently along the guide path within the shaft and the end is permanently located within the storage facility.
- the beginning of the energy store can in this case be arranged permanently unattached along the guide path within the shaft, while the end is preferably attached within the storage device so that the energy store is prevented from sinking into the shaft.
- the potential energy store is arranged inside the shaft in an initial state in such a way that the energy store can move along the guide path in one direction into the interior of the shaft takes place after a release without auxiliary energy.
- the storage device in question is capable of emergency power and can be used at full capacity within a few seconds.
- the guide means has a switching element for releasing the energy store, the switching element preferably being able to be switched off manually, in particular in the form of a backstop or pawl.
- the switching element can in this case preferably be designed and switched in such a way that the potential energy store is held in its position during an intended standstill and is additionally supported in the process.
- an emergency braking device for braking and stopping the energy store in the event of a dangerous situation or a power failure.
- the emergency braking device can in this case preferably be arranged on or on the guide means or the energy store and advantageously be closed in a de-energized state so that it can be operated without additional energy.
- An arrangement in other positions, for example within the shaft, is also conceivable.
- the emergency braking device can be controlled hydraulically or pneumatically, for example, and initiate a braking effect, for example, by applying a spring, wherein a braking effect can advantageously be generated via a form fit.
- the emergency brake device can furthermore be designed as a service brake or as a holding brake, the emergency brake device being arranged in the load direction or in the power flow in front of a transmission for energy or power transmission, in particular in the case of an embodiment as a holding brake.
- the invention can in particular provide that a plurality of potential energy stores is provided, the energy stores preferably being arranged next to one another on the same shaft, in particular on separate guide means.
- a plurality of storage devices are also provided for storing the energy storage devices, wherein the storage devices can preferably be arranged next to one another and / or opposite one another along the insertion opening of the shaft.
- switching elements and / or emergency braking devices can also be advantageous if, in an arrangement of several energy stores, a plurality of switching elements and / or emergency braking devices is provided, advantageously one switching element and / or an emergency braking device for each energy storage device, the switching elements and / or emergency braking devices preferably being switchable independently of one another.
- a detection unit for detecting the current storage capacity, the detection unit preferably having sensors, which are in particular in the form of a rotary encoder are.
- a rotary encoder can preferably be designed in the form of a Militurn encoder, which advantageously detects the rotary movement of the guide means and based on the number of revolutions when it is known
- preferably retrofittable sensors for the detection of further relevant parameters such as current speeds, torques, currents, voltages, frequencies, vibration speeds, temperatures, switching states of clutches, brakes and backstops or the like can be provided, whereby relevant parameters are continuously determined by means of said sensors can be and on the basis of the determination of the operation of a physical storage device can be optimized. It is also conceivable to remotely control a physical device by means of continuous monitoring and / or to network it with other systems in order to optimize operation.
- the invention also relates to a system for compensating for network fluctuations in an energy supply network.
- the subject system comprises a storage device described above, at least one motor for driving the guide means via energy from the energy supply network, at least one generator for converting kinetic energy of the potential energy storage device into electrical energy for delivery to the energy supply network and a line system for exchanging electrical energy between the Energy supply network and the storage device, the system being designed in such a way that, in times of undersupply of the energy supply network, potential energy can be converted into electrical energy by means of the storage device and can be fed into the energy supply network, and in times of oversupply of the energy supply network, electrical energy can be taken from the energy supply network and stored is immutable in potential energy.
- the system according to the invention thus has the same advantages as have already been described in detail with regard to the storage device in question.
- a frequency converter is provided for converting the current into a form suitable for the motor.
- a detection unit is provided to detect a current network load.
- a processing unit to determine the amount of energy that can be drawn from the energy supply network or to be discharged into the energy supply network on the basis of the detected current network utilization, as well as a control unit for controlling an energy transfer between the storage device and the energy supply network The basis of the particular energy that can be absorbed or released into the energy supply network is provided.
- the invention also relates to a method for compensating for network fluctuations in an energy supply network, in particular using a system described above for compensating for network fluctuations in an energy supply network.
- the method in question comprises the steps of detecting a current network utilization of an energy supply system by means of a detection unit, determining an energy that can be drawn from the energy supply network or is to be discharged into the energy supply network on the basis of the detected current network utilization by means of a processing unit, and controlling an energy transfer between the storage device and the Energy supply network on the basis of the specific energy that can be drawn or discharged into the energy supply network by means of a control unit, with potential energy being converted into electrical energy by means of the storage device during times of undersupply of an energy supply network and being fed into the energy supply network and electrical energy from the energy supply network in times of oversupply of the energy supply network taken and converted into potential energy for storage lt will.
- the inventive method brings The same advantages as have already been described in detail in relation to the storage device according to the invention or the system according to the invention for compensating
- FIG. 1a shows a schematic representation of a memory device according to the invention in accordance with a first exemplary embodiment in an initial state
- FIG. 1b shows a schematic representation of a memory device according to the invention in accordance with a first exemplary embodiment in a final state
- Fig. 2 is a schematic representation of a system according to the invention for
- FIG. 3 shows a schematic representation of the individual steps of a method according to the invention for compensating for network fluctuations in an energy supply network.
- the storage device 2 for storing energy in the form of potential energy comprises at least one potential energy store 4 for receiving, storing and releasing energy, at least one guide means 6 for guiding the potential energy store 4 along a guide path 8, the guide path 8 within a vertical is arranged to the earth's surface on the ground shaft 10, the potential Energy store 4 wins the stored potential energy by converting it from kinetic energy and emits it through conversion into kinetic energy, the kinetic energy resulting from a movement of the potential energy store 4 along the guide path 8.
- the potential energy store 4 is formed in the form of a continuous weight extending over the length of the guide path 8.
- the potential energy store 4 is formed in the present case in the form of a chain.
- the potential energy store 4 can also be formed in the form of a rope or the like.
- the potential energy store 4 can in particular be in the form of a link chain and / or a roller chain and / or a toothed chain or the like.
- this can in particular be designed without jamming in order to prevent possible entanglement of the chain links.
- the potential energy store 4 is here preferably formed from a metal material, advantageously an iron material, in particular from steel.
- a storage device 14 is also provided in the present case, which can be arranged close, preferably directly next to an insertion opening 12 of the shaft 10.
- the storage device 14 can in particular be in the form of a trench or the like set into the ground, which can preferably be lined with a weather-related material or the like.
- the guide means 6 can be designed, for example, in the form of a chain wheel and / or a cable drum or the like.
- the potential energy store 4 has a beginning 16 and an end 18, the beginning 16 being permanently arranged in the present case along the guide path 8 within the shaft 14 and the end 18 being arranged permanently within the storage device 10 and in the present case being fastened within the storage device 10.
- the guide means 6 here has a switching element 20, not shown here, for releasing the energy store 4, which can be switched off manually and in particular can be designed in the form of a backstop.
- the storage device 2 comprises an emergency braking device 22 for braking and stopping the energy store 4 in a dangerous situation or a power failure.
- the emergency braking device 22 in question can also be arranged on the guide means 6 or the energy store 4 and advantageously closed in a de-energized state so that it can be actuated without additional energy.
- the storage device 2 comprises a detection unit 32 for detecting the current storage capacity, which in the present case is designed in the form of a rotary encoder.
- This rotary encoder can determine the number of revolutions of the guide means 6 and, on the basis of the number of revolutions with a known initial supply of potential energy storage 4 within the storage device 14, enable the current storage of potential energy storage 4 located in the storage device 14 to be calculated.
- the potential energy store 4 formed in the form of a chain, is still arranged almost completely within the storage device 14.
- FIG. 1b shows a schematic illustration of a memory device 2 according to the invention in accordance with a first exemplary embodiment in a final state.
- the potential energy store 4 is now arranged completely within the shaft 10, in particular at the bottom of the shaft 10, so that now no potential energy in the form of positional energy is present in the potential energy store 4. In order to “charge” the energy store 4 again to the original state, it would have to be conveyed back from the shaft 10 into the storage device 14 via the guide means 6.
- the system 1 comprises a storage device 2 described above, at least one motor 26 for driving the guide means 6 of the storage device 2 via energy from the energy supply network 30, at least one generator 28 for converting kinetic energy of the potential energy store 4 into electrical energy for delivery to the energy supply network 30 and a line system 40 for exchanging electrical energy between the energy supply network 30 and the storage device 2, the system 1 being designed in such a way that, in times of undersupply of the energy supply network 30, potential energy can be converted into electrical energy by means of the storage device 2 and into the energy supply network 30 can be fed in and, in times of oversupply of the energy supply network 30, electrical energy can be withdrawn from the energy supply network 30 and can be converted into potential energy for storage.
- the system 1 in question comprises a detection unit 34 for detecting a current network load, a processing unit 36 for determining an energy that can be drawn from the energy supply network or is to be discharged into the energy supply network on the basis of the detected current network load, and a control unit 38 for controlling an energy transfer between the storage device 2 and the energy supply network 30 on the basis of the specific energy that can be drawn or released into the energy supply network.
- FIG. 3 shows a schematic illustration of the individual steps of a method according to the invention for compensating for network fluctuations in an energy supply network 30.
- the method in question comprises the steps of recording 50 a current network utilization of an energy supply system 30 by means of a detection unit 34, determining 52 an energy that can be taken from the energy supply network 30 or is to be discharged into the energy supply network 30 on the basis of the detected current network utilization by means of a processing unit 36 and an activation 54 of an energy transfer between the storage device 2 and the energy supply network 30 on the basis of the determined removable or in the Energy supply network 30 by means of a control unit 38, whereby in times of undersupply of an energy supply network 30 by means of the storage device 2 potential energy is converted into electrical energy and fed into the energy supply network 30 and in times of an oversupply of the energy supply network 30 electrical energy is taken from the energy supply network 30 and is converted into potential energy for storage.
- the storage device according to the invention for storing energy in the form of potential energy or by means of the system according to the invention, comprising such a storage device, it is possible in particular to continuously and uninterrupted feeding and discharging of energy into and out of an energy supply system in a structurally simple and inexpensive manner to guarantee.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019125840.5A DE102019125840A1 (de) | 2019-09-25 | 2019-09-25 | Verfahren zur Speicherung potentieller Energie |
| PCT/EP2020/076969 WO2021058778A1 (de) | 2019-09-25 | 2020-09-25 | Verfahren zur speicherung potentieller energie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4034763A1 true EP4034763A1 (de) | 2022-08-03 |
Family
ID=72752884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20786483.6A Withdrawn EP4034763A1 (de) | 2019-09-25 | 2020-09-25 | Verfahren zur speicherung potentieller energie |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12012945B2 (de) |
| EP (1) | EP4034763A1 (de) |
| CN (1) | CN114729627A (de) |
| AU (1) | AU2020352664A1 (de) |
| DE (1) | DE102019125840A1 (de) |
| WO (1) | WO2021058778A1 (de) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB249007A (en) | 1925-08-17 | 1926-03-18 | Richard Turner Varley | Improvements relating to building and flooring blocks |
| SU1300189A1 (ru) | 1984-03-16 | 1987-03-30 | . Ю.К.Жебелев | Рекуператор энергии |
| RU2263818C1 (ru) | 2004-02-16 | 2005-11-10 | Морев Генрих Павлович | Гравитационный аккумулятор |
| US8618680B2 (en) * | 2010-03-31 | 2013-12-31 | University Of Southern California | Spaced-apart cable modules in wellbore energy storage and retrieval |
| CN201821167U (zh) * | 2010-06-23 | 2011-05-04 | 百乐电池股份有限公司 | 电力储存系统 |
| FR2985789A1 (fr) | 2012-01-18 | 2013-07-19 | Daniel Chazot | Dispositif de stockage mecanique d'energie |
| GB2499007A (en) * | 2012-02-02 | 2013-08-07 | Impressive Engineering Ltd | Underground energy storage well |
| US10138875B2 (en) * | 2014-09-18 | 2018-11-27 | James Francis Kellinger | Gravity field energy storage and recovery system |
| DE102017102739A1 (de) * | 2017-02-13 | 2018-08-16 | RWE Supply & Trading GmbH | Unterbrechungsfreie Stromversorgung für Lasten |
| DE102017123374A1 (de) * | 2017-10-09 | 2019-04-11 | Westnetz Gmbh | Multiple Verwendung von Energiespeichern |
| DE102019003542A1 (de) * | 2019-05-20 | 2020-01-02 | Daimler Ag | Spannungsversorgungsvorrichtung für ein zumindest teilweise elektrisch betreibbares Kraftfahrzeug, wobei ein erster elektrischer und ein zweiter elektrischer Energiespeicher direkt mit einem Ladeanschluss gekoppelt sind, sowie Verfahren |
-
2019
- 2019-09-25 DE DE102019125840.5A patent/DE102019125840A1/de not_active Withdrawn
-
2020
- 2020-09-25 AU AU2020352664A patent/AU2020352664A1/en not_active Abandoned
- 2020-09-25 WO PCT/EP2020/076969 patent/WO2021058778A1/de not_active Ceased
- 2020-09-25 US US17/763,447 patent/US12012945B2/en active Active
- 2020-09-25 EP EP20786483.6A patent/EP4034763A1/de not_active Withdrawn
- 2020-09-25 CN CN202080080292.8A patent/CN114729627A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021058778A1 (de) | 2021-04-01 |
| AU2020352664A1 (en) | 2022-05-05 |
| US20220290658A1 (en) | 2022-09-15 |
| CN114729627A (zh) | 2022-07-08 |
| DE102019125840A1 (de) | 2021-03-25 |
| US12012945B2 (en) | 2024-06-18 |
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