CN216969633U - Energy storage power station - Google Patents
Energy storage power station Download PDFInfo
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- CN216969633U CN216969633U CN202220551118.3U CN202220551118U CN216969633U CN 216969633 U CN216969633 U CN 216969633U CN 202220551118 U CN202220551118 U CN 202220551118U CN 216969633 U CN216969633 U CN 216969633U
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Abstract
The application discloses energy storage power station includes: slope subgrade, tooth track railway, electric locomotive, energy storage load train and electric power line; the electric locomotive includes: a drive gear, a traction device and a controller; the driving gear is meshed with the gear rail railway; the traction device comprises: the pantograph, the switch, the converter and the dual-mode motor; the power line is connected with the dual-mode motor through the pantograph, the switch and the converter; the controller is respectively connected with the switch and the dual-mode motor; the energy storage load train is connected with the electric locomotive; the tooth rail railway is laid on the slope roadbed. When the power of the electric power system is excessive, the electric locomotive absorbs electric energy from the electric power system, the dual-mode motor operates in a motor mode, the train is driven to ascend from the bottom of a slope along the toothed rail railway to the top of the slope, and the electric energy is converted into gravitational potential energy to be stored. When the power of the electric power system is insufficient, the train slides down along the rack rail railway from the top of the slope under the action of gravity, and the dual-mode motor runs in a generator mode, converts the gravitational potential energy into electric energy and transmits the electric energy to the electric power system.
Description
Technical Field
The application relates to the technical field of energy storage of power systems, in particular to an energy storage power station.
Background
With the development of new energy sources, such as wind power generation, photovoltaic power generation and the like, the proportion of the new energy sources in an electric power system is gradually increased, but because the new energy sources have large fluctuation, the generated power is not always stable when the new energy sources are used for generating power, when the power of the electric power system is excessive, the electric energy generated by the new energy sources cannot be completely consumed by the electric power system, and the new energy sources are forced to abandon wind or light to stop generating, so that resources are wasted; when the power of the power system is insufficient, the new energy power generation may have insufficient wind speed or no light, and the power which is lacked by the power system cannot be fully output. Therefore, the power system needs to be configured with an energy storage system to store excess electric energy or to discharge electric energy into the power system when the power of the power system is insufficient.
The following energy storage systems are mainly used at present:
1. the pumped storage power station can store excess energy of a system to a certain extent and release the stored energy in time when needed, but the pumped storage power station is limited by water resources and reservoir geographical conditions, a new energy base does not have the conditions for building the pumped storage power station, the pumped storage power station is large in investment, and the building period is long.
2. The chemical battery energy storage power station has the advantages of mature technology, flexible position of the power station and high response speed, but the energy density of chemical energy storage is small, the cost is high, the battery consumption is high, the risk of fire or explosion exists, and the potential environmental hazard of the retired battery is large.
3. Other forms of energy storage, such as compressed air power storage, flywheel mechanical storage, etc., are being explored and lack commercial application.
Therefore, the physical energy storage power station which takes the train as a main counterweight and converts the electric energy into the gravitational potential energy for storage still serves as an important energy storage system, but the gradient of the slope which can be climbed by the existing rail railway is 4% -6%, if the requirement of storing a large amount of electric energy is met, an extremely long railway is needed for the train to climb, and the implementation is more easily limited by the environment while the cost is high.
Therefore, how to build a safe and environment-friendly large physical energy storage power station in a new energy base is a problem that needs to be solved urgently by a technical person in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides an aim at provides an energy storage power station, it is limited still to have rail railway climbing slope in current physics energy storage power station to solve for implement and receive environmental restriction and the higher problem of cost more easily.
In order to solve the above technical problem, the present application provides an energy storage power station, including: the system comprises a slope roadbed 1, a tooth rail railway 2, an electric locomotive 3, an energy storage load train 4 and an electric power circuit 5; the electric locomotive 3 includes: a drive gear 31, a traction device 32, and a controller 33; wherein the driving gear 31 is used for meshing with the rack-and-pinion railway 2; the pulling device 32 includes: a pantograph 321, a switch 322, a converter 323 and a dual-mode motor 324; the dual mode electric machine 324 is an electric machine that switches operating modes between a motor mode or a generator mode; the pantograph 321, the switch 322 and the converter 323 are sequentially connected in series, and two ends of the series circuit are respectively connected with the power line 5 and the dual-mode motor 324; the controller 33 is respectively connected with the switch 322 and the dual-mode motor 324, and is used for controlling the on-off state of the switch 322 and the operation mode of the dual-mode motor 324; the energy storage load train 4 is connected with the electric locomotive 3; the tooth track railway 2 is laid at the slope roadbed 1.
Preferably, the method further comprises the following steps: a top parking lot; the overhead parking lot is disposed at one end of the rack-rail railway 2 at a high position, and is used for storing the energy storage load train 4 and the electric locomotive 3.
Preferably, the method further comprises the following steps: a bottom parking lot; the bottom parking lot is arranged at one end of the tooth track railway 2 at a low position and used for storing the energy storage load train 4 and the electric locomotive 3.
Preferably, the slope roadbed 1 is arranged on a linear slope, and correspondingly, the tooth-track railway 2 is a linear track.
Preferably, the slope roadbed 1 is arranged on a hillside, and correspondingly, the tooth-track railway 2 is a mountain-type track.
Preferably, the slope roadbed 1 is arranged in a pot hole, and correspondingly, the tooth track railway 2 is a spiral track.
Preferably, the rack railways 2 are multiple, and the rack railways 2 are arranged in parallel.
Preferably, the dual mode motor 324 and the driving gear 31 are in multiple sets, and the dual mode motor 324 and the driving gear 31 correspond to each other one by one.
Preferably, the electric locomotive 3 further comprises: a counterweight 34.
Preferably, the storage load train 4 further comprises: a drive gear 31 and a traction device 32.
The energy storage power station is connected with an electric power line through an electric locomotive, when power in the electric power line is excessive, the electric locomotive absorbs electric energy of the electric power line through a pantograph, a controller controls a dual-mode motor to be in a motor mode to drive the electric locomotive to climb, the electric locomotive is connected with an energy storage load train, the energy storage load train is pulled to climb together, and the electric energy is converted into gravitational potential energy to be stored; when the power of the power line is insufficient, the controller controls the dual-mode motor to be in a generator mode, the energy storage load train and the electric locomotive move downwards along the tooth rail railway under the action of gravity, the dual-mode motor working in the generator mode converts gravitational potential energy into electric energy, and the electric energy is transmitted into the power line through the pantograph, the converter and the switch, so that the purpose that the energy storage power station stores the electric energy of the power system is achieved. Simultaneously, the utility model provides an energy storage power station provides the mode of ascending a slope for electric locomotive and energy storage load train through the cogged rail railway, the meshing of the drive gear of cogged rail railway and electric locomotive provides stronger climbing ability, only can climb the slope for 4% to 6% slope on the railway for ordinary wheel, can climb the slope through the mode of cogged rail railway and reach 48% slope, under the equal condition of climbing height of greatly reduced, the length of laying of railway, and reduced the requirement to the surrounding environment topography when establishing the energy storage power station, the suitability of energy storage power station has further been increased.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of an energy storage power station provided by the present invention;
FIG. 2 is a schematic structural diagram of a rack-and-pinion railway provided by the present invention;
FIG. 3 is a circuit diagram of a power system coupled to a traction device in accordance with the present invention;
fig. 4a is a schematic top view of a mountain-based trailed toothed rail railway provided by the utility model;
fig. 4b is a schematic side view of a mountain-based trailed toothed rail railway provided by the utility model;
FIG. 5a is a schematic top view of a pit-based spiral rack-track railway according to the present invention;
FIG. 5b is a schematic side view of a pit-based spiral rack-track railway according to the present invention;
the system comprises a slope roadbed 1, a rack railway 2, an electric locomotive 3, an energy storage load train 4, an electric power circuit 5, a driving gear 31, a traction device 32, a controller 33, a counterweight 34, a pantograph 321, a switch 322, a converter 323 and a dual-mode motor 324.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide an energy storage power station.
In order that those skilled in the art will better understand the disclosure, the following detailed description is given with reference to the accompanying drawings.
Because of the large fluctuation of the power generation by using new energy, the new energy power station is usually equipped with an energy storage system to store the electric energy of the new energy when the power is excessive and release the electric energy when the power is insufficient, and the common energy storage power stations at present are in the form of pumped storage power stations, chemical battery energy storage power stations and physical energy storage power stations. The pumped storage power station is severely limited by water resources, large in investment and long in construction period, while the chemical battery power station has the problems of small energy density, high cost, high battery consumption, fire or explosion risks, large potential environmental hazards of retired batteries and the like.
Therefore, the present application provides a storage power station in the form of a physical storage power station, as shown in fig. 1, comprising: the system comprises a slope roadbed 1, a tooth rail railway 2, an electric locomotive 3, an energy storage load train 4 and an electric power circuit 5; the slope roadbed 1 is arranged on the terrain of a position required to be arranged by the energy storage power station, such as a slope, a hillside, a pit hole and the like, and is used for paving a toothed rail railway 2; the structure of the tooth rail railway 2 is shown in fig. 2, and comprises two steel rails 21, a tooth rail 22 and a sleeper 23 which are arranged in parallel; wherein the sleepers 23 are used for laying the steel rails 21; the two steel rails 21 are used for bearing wheels 24 of a vehicle body and providing a track path for the electric locomotive 3; one possible embodiment of the rack 22 is arranged between the two rails 21 for engagement with the driving gear 31 of the electric locomotive 3 to provide a stronger climbing capability.
The specific structure of the electric locomotive 3 is shown in an enlarged portion encircled by an ellipse in fig. 1, and comprises: a drive gear 31, a traction device 32, and a controller 33.
Wherein the driving gear 31 is used for meshing with the tooth track railway 2 to provide a stronger meshing force with respect to a frictional force between a general wheel and a general rail so that the electric locomotive 3 can climb a steep slope having a gradient of up to 48%. Similarly, the climbing capability of the electric locomotive 3 can be increased by cable traction or chain drive.
The pulling device 32, as shown in fig. 3, comprises: a pantograph 321, a switch 322, a current transformer 323 and a dual-mode motor 324.
The dual mode motor 324 is a motor that switches operation modes between a motor mode and a generator mode, and is used for driving the wheels 24 or the drive gear 31 to climb the vehicle body up along the rack rail 2 when the dual mode motor 324 operates in the motor mode, and is used for generating electric energy when the vehicle body slides down along the rack rail 2 under the action of gravity when the dual mode motor 324 operates in the generator mode.
The pantograph 321, the switch 322 and the converter 323 are sequentially connected in series, two ends of the series circuit are respectively connected to the power line 5 and the dual-mode motor 324, and are used for realizing electric energy transmission between the power line 5 and the dual-mode motor 324, specifically, when power in a power system (that is, the power line 5) is excessive, the dual-mode motor 324 operates in a motor mode, electric energy is transmitted from the power line 5 to the dual-mode motor 324, and when power in the power system is insufficient, the dual-mode motor 324 operates in a generator mode, and electric energy is transmitted from the dual-mode motor 324 to the power line 5.
The energy storage load train 4 is connected with the electric locomotive 3, and comprises a train body and a counterweight, when the power of the electric power system is excessive, the energy storage load train 4 is pulled by the electric locomotive 3 to climb upwards along the toothed rail railway 2, when the power of the electric power system is insufficient, the energy storage load train 4 slides downwards along the toothed rail railway 2 under the action of the gravity of the train body and the counterweight, the energy storage load train 4 mainly acts to increase the weight, so that more gravitational potential energy can be increased by climbing once under the condition that the climbing height is unchanged, and the purpose of storing more electric energy is further realized.
Considering that the energy storage load train 4 mainly functions to load a counterweight so as to convert more electric energy into gravitational potential energy for storage when being pulled and climbed by the electric locomotive 3, the present embodiment further provides a preferable solution for increasing the energy storage of the energy storage power station, and the electric locomotive 3 further includes: a counterweight 34.
The electric locomotive 3 may be loaded with a counterweight 34 in the body, except for the necessary driving gear 31, traction device 32 and controller 33, to increase its weight, and to convert more gravitational potential energy when the electric locomotive 3 climbs.
It should be noted that, in the present application, one or more trains capable of independently performing the electric energy storage and release by climbing and sliding along the same rack-and-pinion railway 2 are referred to as a train set. Generally, one electric locomotive 3 is arranged in one train set and used for towing the train set to climb along the tooth track railway 2, gravitational potential energy is converted into electric energy through a dual-mode motor 324 in a generator mode when the train set slides down, the electric locomotive 3 tows a plurality of energy storage load trains 4, the energy storage load trains 4 are connected end to end, and the energy storage load train 4 positioned at the head is connected with and towed by the electric locomotive 3. However, there are embodiments in which only one electric locomotive 3 is connected to one train group, and only one energy storage load train 4 is connected to the electric locomotive 3 to one train group, and the embodiments can be freely selected according to actual situations. Generally, how many energy storage load trains 4 are arranged in a train set is related to the energy storage amount of the energy storage power station required to be established, the more the required energy storage amount is, the more the gravitational potential energy required to be converted is, and under the condition that the climbing height is unchanged, the larger the total mass of the train set is, that is, the larger the mass of the energy storage load trains 4 and/or the counterweight loaded on each energy storage load train 4 is.
In addition, the number of the rack railways 2 is not limited, when the terrain where the energy storage power station is located meets the conditions, for example, the slope terrain for setting the rack railways 2 is wide enough, a plurality of rack railways 2 can be arranged in parallel, and correspondingly, different train groups can be operated on each rack railway 2, so that the energy storage capacity of the energy storage power station provided by the application is further improved.
It is also worth noting that the dual mode electric machine 324 provides electromagnetic braking torque when operating in the generator mode so that the consist does not lose control of vehicle speed due to gravity.
Similarly, in order to improve the energy storage capacity of the energy storage power station, the present embodiment further provides a preferable solution for the specific implementation of the rack-and-rail railway 2, further including: a top parking lot; the overhead parking lot is disposed at one end of the rack-rail railway 2 at a high position, and is used for storing the energy storage load train 4 and the electric locomotive 3.
Similarly, another preferred embodiment may further include: a bottom parking lot; the bottom parking lot is arranged at one end of the tooth track railway 2 at a low position and used for storing the energy storage load train 4 and the electric locomotive 3.
The bottom parking lot and the top parking lot can be used for replacing the energy storage load train 4 pulled by the electric locomotive 3 in the parking lot for a plurality of times of traction and transportation except for parking the electric locomotive 3 and the energy storage load train 4 when the energy storage power station does not work, and when the power system is in an excess power state or an insufficient power state, the total amount of electric energy stored in the energy storage power station can be increased.
The specific process is as follows: when the power of the electric power system is continuously surplus, the electric locomotive 3 pulls the energy storage load train 4 connected with the electric locomotive from the slope bottom to the slope top of the slope where the toothed rail railway 2 is located, the conversion from the electric energy to the gravitational potential energy is completed once, but the power of the electric power system is still surplus at the moment, the electric locomotive 3 can run to the slope bottom again, a new energy storage load train 4 is pulled from a bottom parking lot to the slope top, and therefore the conversion process from the electric energy to the gravitational potential energy of a new round is carried out; similarly, when the power of the power system is continuously insufficient, after the electric locomotive 3 is dragged by the energy storage load train 4 to slide down to generate electric energy, the electric locomotive returns to the top of the slope to be replaced by a new group of energy storage load trains 4 to slide down, so that the release of the electric energy for many times is realized, and the total energy storage amount of the energy storage power station is increased under the condition that the existing tooth rail railway 2 is not additionally arranged and prolonged.
The energy storage power station rack rail railway 2 provided by the application needs to be set on a terrain with a certain height difference, so in actual implementation, the following conditions mainly exist:
the landform of the slope roadbed 1 is a linear slope, and correspondingly, the tooth rail railway 2 is a linear track.
The slope subgrade 1 is located on a hillside 6, correspondingly, the tooth-track railway 2 is a mountain-type track, specifically, as shown in fig. 4a and 4b, 61 is a mountain top, 2 is a tooth-track railway, and 62 is a mountain bottom.
The slope subgrade 1 is located in a pit hole 7, correspondingly, the tooth-track railway 2 is a spiral track, specifically, as shown in fig. 5a and 5b, 71 is a pit bottom, 2 is a tooth-track railway, and 72 is a pit top.
In addition, as can be seen from the above description, the present application does not limit the number of the driving gears 31 provided on the electric locomotive 3, but generally, the dual-mode motor 324 and the driving gear 31 are in one-to-one correspondence and are used for driving the electric locomotive 3 to climb up, and when the tractive force provided by one set of the dual-mode motor 324 and the driving gear 31 is insufficient, the present embodiment provides a preferable scheme: the dual-mode motor 324 and the driving gear 31 are in multiple groups, and the dual-mode motor 324 and the driving gear 31 correspond to each other one by one.
The arrangement of the multiple sets of the dual-mode motors 324 and the driving gears 31 can provide larger tractive force when the train set climbs and also can provide larger generating power when the train set slides down, namely, the power for storing and discharging the energy storage power station is increased.
Similarly, to achieve the above beneficial effects of the embodiment of adding multiple sets of the dual-mode motor 324 and the driving gear 31, this embodiment also provides another preferred embodiment, and the energy storage load train 4 further includes: a drive gear 31 and a traction device 32. To provide more torque, i.e., traction, as the consist climbs and more generated power through more of the dual mode electric machine 324 in generator mode as the consist slips.
From the above, the energy storage power station provided by the application realizes the mutual conversion between the electric energy and the gravitational potential energy by driving the train set to climb or slide down along the rack rail railway through the dual-mode motor, when the power of the electric power system is excessive, the traction train set climbs to convert the excessive electric energy into the gravitational potential energy for storage, and when the power of the electric power system is insufficient, the dual-mode motor can work in a generator mode, when the train set slides down under the action of gravity, the gravitational potential energy is converted into the electric energy to be transmitted to the electric power system, so that the electric energy storage process and the electric energy release process of the energy storage power station are realized, compared with the forms of a chemical battery energy storage power station and the like, the physical energy storage power station is more environment-friendly and has longer service life, the deployment is not limited by the distribution of water resources like a pumped storage power station, and only needs a terrain with a certain height difference, the balance weight required in the train set can be obtained from local materials, sand can be used as the balance weight when the train set is built in a desert, the cost is low, the balance weight is simple and easy to obtain, and the applicability of the energy storage power station provided by the application is further improved. Simultaneously, when ordinary train traveles on ordinary rail railway, the biggest slope that only can climb is 6%, otherwise will skid because wheel and rail, the phenomenon that frictional force is not enough appears, this application then utilizes the drive gear with rack rail railway meshing, the realization can climb the slope and reach 48% slope, under the condition of equal climbing height, the railway length that this application needs to set up is shorter, and the train climbing ability is strong also makes more difficult to by the environment restriction during the energy storage power plant construction, can build among more diversified environment.
The energy storage power station provided by the application is described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.
It should also be noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. An energy storage power plant, characterized by comprising: the system comprises a slope roadbed (1), a toothed rail railway (2), an electric locomotive (3), an energy storage load train (4) and an electric power line (5);
the electric locomotive (3) comprises: a drive gear (31), a traction device (32) and a controller (33);
wherein the drive gear (31) is used for meshing with the rack rail railway (2);
the traction device (32) comprises: the pantograph (321), the switch (322), the converter (323) and the dual-mode motor (324); the dual mode electric machine (324) is an electric machine that switches operating modes between a motor mode or a generator mode; the pantograph (321), the switch (322) and the converter (323) are sequentially connected in series, and two ends of the series circuit are respectively connected with the power line (5) and the dual-mode motor (324);
the controller (33) is respectively connected with the switch (322) and the dual-mode motor (324) and is used for controlling the opening and closing state of the switch (322) and the running mode of the dual-mode motor (324);
the energy storage load train (4) is connected with the electric locomotive (3);
the tooth rail railway (2) is laid at the slope roadbed (1).
2. The energy storage power station of claim 1 further comprising: a top parking lot; the overhead parking lot is arranged at one end, located at a high position, of the toothed rail railway (2) and is used for storing the energy storage load train (4) and the electric locomotive (3).
3. The energy storage power station of claim 1 further comprising: a bottom parking lot; the bottom parking lot is arranged at one end, located at the lower position, of the rack rail railway (2) and is used for storing the energy storage load train (4) and the electric locomotive (3).
4. The storage power plant according to claim 1, characterized in that the sloping foundations (1) are arranged on straight slopes, and correspondingly, the tooth-track railways (2) are straight tracks.
5. The storage power plant according to claim 1, characterized in that the sloping foundations (1) are placed on a hill, and correspondingly, the tooth-track railways (2) are trailed mountain tracks.
6. The storage power plant according to claim 1, characterized in that the sloping foundations (1) are placed in potholes and correspondingly the tooth-track railways (2) are spiral tracks.
7. The storage power station of any of claims 1 to 6, characterized in that the railways (2) are multiple and that the railways (2) are juxtaposed.
8. The energy storage plant of claim 7, characterized in that the dual-mode electric machine (324) and the driving gear (31) are in multiple groups, and the dual-mode electric machine (324) and the driving gear (31) are in one-to-one correspondence.
9. The storage power plant of claim 1, characterized in that the electric locomotive (3) further comprises: a counterweight (34).
10. The storage power station of claim 1 characterized in that the storage load train (4) further comprises: the drive gear (31) and the traction means (32).
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| CN202220551118.3U CN216969633U (en) | 2022-03-14 | 2022-03-14 | Energy storage power station |
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| CN202220551118.3U CN216969633U (en) | 2022-03-14 | 2022-03-14 | Energy storage power station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117261947A (en) * | 2023-11-21 | 2023-12-22 | 石家庄煤矿机械有限责任公司 | Explosion-proof electric traction clamping rack locomotive |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117261947A (en) * | 2023-11-21 | 2023-12-22 | 石家庄煤矿机械有限责任公司 | Explosion-proof electric traction clamping rack locomotive |
| CN117261947B (en) * | 2023-11-21 | 2024-02-02 | 石家庄煤矿机械有限责任公司 | Explosion-proof electric traction clamping rack locomotive |
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