CN214674543U - New energy power generation system with coupling gravity energy storage - Google Patents

Abstract

The utility model discloses a new forms of energy power generation system of coupling gravity energy storage. The utility model adopts the technical proposal that: one end of each rail is arranged on the low stacking platform, and the other end of each rail is arranged on the high stacking platform; a direct current electric power generation integrated machine is arranged on the high-position stacking platform of each rail; the output end of the new energy power generation system is respectively connected with the input end of the storage battery and the input end of the direct current electric power generation all-in-one machine, the output end of the storage battery is connected with the input end of the direct current electric power generation all-in-one machine, the output end of the direct current electric power generation all-in-one machine is connected with a cable disc, and the cable disc is connected with the standardized weight block trolley through a cable; the standardized weight trolley is arranged on a rail. The utility model discloses a standardized pouring weight dolly is stacked the platform and is stacked the platform with the low level at the high position and move between the platform, and the unnecessary power that intermittent type nature energy sources such as photovoltaic, wind-force sent can be effectively absorbed, reduces the output peak value, and the cost is lower, system reliability is higher.

Description

New energy power generation system with coupling gravity energy storage

Technical Field

The utility model belongs to the technical field of the energy storage technique and specifically relates to a new forms of energy power generation system of coupling gravity energy storage.

Background

In recent years, with the acceleration of energy structure transformation speed in China, clean energy enters a new stage of large-scale development, and as late as 2019, the installed capacity of the clean energy accounts for 40.8% of the total installed capacity, renewable energy such as wind power, photovoltaic and the like are greatly connected to the grid, the power structure in China is improved to a great extent, and the power greening level is promoted, but due to the fact that the generated power of the wind power, the photovoltaic and the like has the adverse factors such as intermittence, volatility and the like, the large-scale grid connection of the wind power, the photovoltaic and the like brings many adverse effects to a power grid, meanwhile, a large amount of 'wind abandoning and light abandoning' is also caused, and the new energy absorption capacity is limited to a certain degree. Particularly for a new energy power generation system operating in an isolated network, because the isolated network is not supported by a large power grid, the adverse factors such as intermittence and volatility existing in the power generation of the new energy power generation system are more prominent, and the energy storage becomes an important technology for eliminating the adverse factors.

The principle of the gravity energy storage is that potential energy formed by gravity is used for storing energy, and the gravity energy storage has the advantages of low development cost, economical operation and the like, so that the gravity energy storage is gradually emphasized by various countries in the world in the technical field of energy storage and is applied to a certain degree. Chinese patent CN103867408A provides a gravity energy storage system depending on mountain, but this patent only provides a gravity energy storage system in a large grid mode, and does not provide a gravity energy storage system that can be coupled with renewable energy sources such as wind power, photovoltaic, etc. in new modes such as island operation, etc. and can be effectively absorbed, and it is not widely applicable to the current stage of scale development of clean energy.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to above-mentioned prior art exists, the utility model provides a new forms of energy power generation system of coupling gravity energy storage, it uses standardized pouring weight dolly to stack the platform at the high position and stack the platform between the platform with the low level and move, at photovoltaic, the higher period of generating power such as wind-force, can the effective absorption photovoltaic, the unnecessary power of intermittent type nature energy sources such as wind-force, it can external output power to stabilize simultaneously, at photovoltaic, the lower period of generating power such as wind-force, can external output stable power, both can be used to restrain new forms of energy output power's fluctuation, the mesh of "the peak clipping is filled in the valley" also can be reached.

Therefore, the utility model adopts the following technical scheme: the new energy power generation system comprises a new energy power generation system, a storage battery, a standardized weight trolley and a plurality of rails which are paved on a mountain body;

one end of each rail is arranged on the low stacking platform, and the other end of each rail is arranged on the high stacking platform; a direct current electric power generation integrated machine is arranged on the high-position stacking platform of each rail;

the output end of the new energy power generation system is respectively connected with the input end of the storage battery and the input end of the direct current electric power generation all-in-one machine, the output end of the storage battery is connected with the input end of the direct current electric power generation all-in-one machine, the output end of the direct current electric power generation all-in-one machine is connected with a cable disc, and the cable disc is connected with the standardized weight block trolley through a cable;

the standardized weight trolley is arranged on the rail.

When the trolley is in the energy storage stage, the direct current electric power generation all-in-one machine controls the cable disc to rotate, contracts the cable and drives the standardized weight trolley to move upwards. And when the direct current electric power generation integrated machine is in a power generation stage, the standardized weight trolley controls the cable disc to rotate, releases the cable and drives the direct current electric power generation integrated machine to generate power.

Furthermore, standardized weight trolley storage warehouses are arranged on the low-position stacking platform and the high-position stacking platform, and each rail is directly communicated with the standardized weight trolley storage warehouses, so that the standardized weight trolley storage is facilitated.

Furthermore, each rail is provided with a horizontal section on the low-position stacking platform and the high-position stacking platform, so that the assembly and disassembly of the standardized heavy block trolley are facilitated.

Further, the new energy power generation system is a photovoltaic power generation system or a wind power generation system.

And when the new energy power generation system is a wind power generation system, the output end of the new energy power generation system is respectively connected with the input end of the storage battery and the input end of the direct current electric power generation all-in-one machine through a rectifier.

Furthermore, the standardized weight trolleys are provided with a plurality of standardized weight trolleys, and adjacent standardized weight trolleys are connected through a coupler.

Further, the plurality of rails are preferably parallel rails.

Further, the slope angle of the mountain is preferably 10 ° to 80 °, and most preferably 30 ° to 60 °.

Furthermore, a brake device is arranged on the standardized weight trolley. When the standardized weight trolley is in ascending energy storage and the output of the direct current electric power generation integrated machine is not enough to pull the standardized weight trolley, the standardized weight trolley can be automatically braked; when the standardized weight trolley descends to generate electricity, the descending speed of the standardized weight trolley can be controlled in an auxiliary mode.

The utility model discloses following beneficial effect has:

1) the new energy has high power generation and absorption capacity. The utility model discloses the accessible changes means such as standardized pouring weight dolly operation quantity, the standardized pouring weight dolly upgoing speed of control, under the circumstances that the electric wire netting can not consume new forms of energy generated power completely, greatly degree consumes the new forms of energy and sends unnecessary power to but stable system internet surfing power, when the battery has chargeable space, still can fill the new forms of energy generated power system and send unnecessary electric quantity into the battery, further improves the generated energy consumption of new forms of energy.

2) The output power is stable. The utility model discloses can stack the standardized pouring weight dolly quantity of platform storage according to new forms of energy system generated power and high-order, through changing standardized pouring weight dolly operation quantity, control standardized pouring weight dolly and go upward and means such as down speed, output target stable power.

3) The system has small pollution during operation. The utility model discloses mainly rely on physical mode storage gravitational potential energy, only have the battery to store a small amount of chemical processes such as energy, the system operation pollutes for a short time.

4) The system has high operation safety and reliability. The utility model discloses at the energy storage in-process, can be according to the standardized pouring weight dolly operation quantity of the reasonable control of the unnecessary power that new energy system sent, when the power transient appearance low value that new energy system sent, the electric quantity of storage can supply to direct current electric power generation all-in-one in the battery, guarantees that standardized pouring weight dolly is stable to go upward. Furthermore, the utility model discloses still dispose brake equipment in standardized pouring weight dolly design process, in the energy storage stage, can prevent that standardized pouring weight dolly from gliding by oneself because of direct current motor-driven power generation all-in-one power is not enough, in the electricity generation stage, can the down speed of the standardized pouring weight dolly of auxiliary control, further increased system operation security.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a top view of FIG. 1;

in the figure, 1-mountain, 2-photovoltaic power generation system, 3-DC electric power generation all-in-one machine, 4-storage battery, 5-rail, 6-standardized weight trolley, 7-coupler, 8-cable, 9-cable disc, 10-brake device, 11-high stacking platform, 12-low stacking platform, 13-standardized weight trolley storage warehouse;

FIG. 3 is a graph of photovoltaic power generation power within 24 hours of a certain isolated grid operating system a day;

fig. 4 is a 24-hour output power curve diagram of embodiment 1 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 6 is a top view of FIG. 5;

in the figure, 1-mountain, 2-wind power generation system, 3-DC electric power generation all-in-one machine, 4-storage battery, 5-rail, 6-standardized weight trolley, 7-coupler, 8-cable, 9-cable disc, 10-brake device, 11-high stacking platform, 12-low stacking platform, 13-standardized weight trolley storage warehouse and 14-rectifier;

FIG. 7 is a wind power generation power curve diagram of a certain isolated grid operating system within 24 hours of a certain day;

fig. 8 is a 24-hour output power curve diagram of embodiment 2 of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. It should be understood that the embodiments described herein are only for the purpose of explanation and are not intended to limit the present invention.

Example 1

Referring to fig. 1 and 2, a new energy power generation system for coupling gravity energy storage includes a mountain 1 with a certain gradient, a plurality of rails 5 are laid on the mountain 1, the plurality of rails 5 can be parallel rails, one end of each rail 5 is placed on a low-position stacking platform 12, the other end is placed on a high-position stacking platform 11, each rail 5 is provided with a horizontal section on the low-position stacking platform 12 and the high-position stacking platform 11, so that the assembly and disassembly of a standardized weight trolley 6 are facilitated, standardized weight trolley storage warehouses 13 are arranged on the low-position stacking platform 12 and the high-position stacking platform 11, each rail 5 is directly communicated with the standardized weight trolley storage warehouses 13, the storage of the standardized weight trolley 6 is facilitated, and a dc electric power generation integrated machine 3 is arranged on each rail 5 of the high-position stacking platform 11.

Photovoltaic power generation system 2 connects direct current electric power generation all-in-one 3 and battery 5, and direct current electric power generation all-in-one 3 is connected to battery 5, and direct current electric power generation all-in-one 3 is connected cable reel 9, and standardized pouring weight dolly 6 is connected through hawser 8 to cable reel 9, and direct current electric power generation all-in-one 3 is installed on high-order stacking platform 11. When the power generated by the photovoltaic power generation system 2 is not enough to maintain the upward speed of the standardized weight trolley 6, the storage battery 5 can release electric quantity to maintain the upward speed of the standardized weight trolley 6. When the storage battery 5 has a chargeable space, the power can be absorbed according to the power generated by the photovoltaic power generation system 2 and the standardized weight trolley 6, and the storage battery is charged in real time.

The brake device 10 is arranged on the standardized weight trolley 6, when the standardized weight trolley 6 is in ascending energy storage and the output of the direct current electric power generation integrated machine 3 is not enough to pull the standardized weight trolley 6, the standardized weight trolley 6 can be automatically braked, and when the standardized weight trolley 6 is in descending power generation, the descending speed of the standardized weight trolley 6 can be controlled in an auxiliary mode.

Referring to fig. 3, a photovoltaic power generation power diagram of a certain isolated grid operating system within 24 hours of a day is shown, in the photovoltaic power generation system 2, in two intervals of 0-4 h and 19-24 h, the power generation power is 0KW, the power generation power is gradually increased from 4h to 13h, the power generation power reaches the peak and is 2050KW, and then the power generation power is gradually decreased. In the time quantum of 4~19h, standardized pouring weight dolly 6 is in the energy storage stage that rises, the standardized pouring weight dolly 6 of platform 12 is stacked to the high-order to the standardized pouring weight dolly 6 of direct current electric power generation all-in-one 3 transports the low level to stack the platform 11, standardized pouring weight dolly 6 operation in-process, should maintain the ascending velocity of standardized pouring weight dolly 6 unchangeably, the quantity that standardized pouring weight dolly 6 was transported to the single time can be adjusted according to photovoltaic power generation system 2's the unnecessary power that sends out, connect through coupling 7 between the standardized pouring weight dolly 6 of many rails 5, the standardized pouring weight dolly 6 alternate operation of many rails 5, can greatly absorb the unnecessary power that photovoltaic power generation system 2 sent out, and can make the external output power of system relatively stable in certain period. Taking 2 rails 5 as an example, the ascending time of the standardized weight trolley 6 is longer than the sum of the assembling time of the standardized weight trolley 6, the disassembling time of the standardized weight trolley 6 and the descending time of the standardized weight trolley 6, and the alternate operation of the energy storage stage of the system can be realized.

Referring to fig. 4, a graph of output power of embodiment 1 is shown. In the two intervals of 0-4 h and 19-24 h, the standardized weight trolleys 6 are in a power generation stage, the standardized weight trolleys 6 of the high-position stacking platform 11 are conveyed to the low-position stacking platform 12, the descending speed of the standardized weight trolleys 6 is kept unchanged in the running process of the standardized weight trolleys 6, the number of the standardized weight trolleys 6 in single running can be determined according to the number of the standardized weight trolleys 6 stored in the standardized weight trolley storage warehouse 13 of the high-position stacking platform 11, the standardized weight trolleys 6 of the plurality of rails 5 run alternately, and the stability of output power can be kept. Taking 2 rails 5 as an example, the descending time of the standardized weight trolley 6 is longer than the sum of the assembling time of the standardized weight trolley 6, the disassembling time of the standardized weight trolley 6 and the ascending time of the standardized weight trolley 6, and the alternate operation of the system in the power generation stage can be realized. Compared with the attached figure 3, the peak value of the output power can be effectively reduced in the interval of 4-19 h after the system is used.

Example 2

Referring to fig. 5 and 6, a new energy power generation system coupled with gravity energy storage has the same usage principle as that of embodiment 1.

Please refer to fig. 7, which shows the wind power generation power of a certain isolated network operating system within 24 hours of a certain day. Referring to FIG. 8, the output power of embodiment 2 is shown. Unlike embodiment 1, the wind power generation system 2 outputs alternating current, and the rectifier 14 is added in this embodiment. The wind power generation system 2 has active power output all day long, and in order to realize stable output power within the range of all day long, the system needs to increase the number of rails and can be in energy storage and power generation stages all day long. The standardized weight trolley 6 ascends to form an energy storage stage; the standardized weight trolley 6 descends to be in a power generation stage. In the operation process of the standardized weight trolley 6, the ascending speed and the descending speed of the standardized weight trolley 6 are kept unchanged, in the energy storage stage, the number of the standardized weight trolleys 6 conveyed in a single time can be adjusted according to the generated power of the wind power generation system 2, and in the power generation stage, the number of the standardized weight trolleys 6 conveyed in a single time can be determined according to the number of the standardized weight trolleys 6 stored in the standardized weight trolley storage warehouse 13 of the high-position stacking platform 11. The standardized weight trolleys 6 of the plurality of rails 5 run alternately, so that redundant power generated by the wind power generation system 2 can be greatly absorbed and stable power can be output. In order to realize that the system is in the energy storage and power generation stages all day long, at least 4 rails 5 are needed, 2 rails 5 are used for storing energy, and 2 rails 5 are used for generating power. Therefore, the system can realize relatively stable output power in the whole day range. Taking 4 rails 5 as an example, for 2 energy storage rails, the ascending time of the standardized weight trolley 6 is longer than the sum of the assembling time of the standardized weight trolley 6, the disassembling time of the standardized weight trolley 6 and the descending time of the standardized weight trolley 6, so that the alternate operation of the energy storage rails at the stage can be realized, and for 2 power generation rails, the descending time of the standardized weight trolley 6 is longer than the sum of the assembling time of the standardized weight trolley 6, the disassembling time of the standardized weight trolley 6 and the ascending time of the standardized weight trolley 6, so that the alternate operation of the power generation rails at the stage can be realized. Compared with the figure 4, the output power is more gentle throughout the day and can be output according to actual power requirements.

Claims (10)

1. The new energy power generation system for coupling gravity energy storage comprises a new energy power generation system, and is characterized by further comprising a storage battery (4), a standardized weight trolley (6) and a plurality of rails (5) laid on a mountain body (1);

one end of each rail (5) is arranged on the low stacking platform (12), and the other end is arranged on the high stacking platform (11); a direct current electric power generation integrated machine (3) is arranged on the high-position stacking platform (11) of each rail (5);

the output end of the new energy power generation system is respectively connected with the input end of a storage battery (4) and the input end of a direct current electric power generation all-in-one machine (3), the output end of the storage battery (4) is connected with the input end of the direct current electric power generation all-in-one machine (3), the output end of the direct current electric power generation all-in-one machine (3) is connected with a cable disc (9), and the cable disc (9) is connected with a standardized weight trolley (6) through a cable (8);

the standardized weight trolley (6) is arranged on the rail (5).

2. The new energy power generation system based on coupling gravity energy storage according to claim 1, wherein standardized weight trolley storage warehouses (13) are arranged on the low-level stacking platform (12) and the high-level stacking platform (11), and each rail (5) is directly communicated with the standardized weight trolley storage warehouses (13) to facilitate storage of the standardized weight trolleys (6).

3. The coupled gravity energy storage new energy generation system according to claim 1 or 2, characterized in that each rail (5) is provided with a horizontal section on both the lower stacking platform (12) and the upper stacking platform (11) to facilitate the assembly and disassembly of the standardized weight trolley (6).

4. The gravity energy storage coupled new energy power generation system according to claim 1 or 2,

the new energy power generation system is a photovoltaic power generation system or a wind power generation system.

5. The coupled gravity energy storage new energy power generation system according to claim 4, wherein when the new energy power generation system is a wind power generation system, the output end of the new energy power generation system is connected with the input end of the storage battery (4) and the input end of the DC electric power generation all-in-one machine (3) through a rectifier (14).

6. The coupled gravity energy storage new energy generation system according to claim 1 or 2, characterized in that there are several standardized weight trolleys (6), and adjacent standardized weight trolleys (6) are connected by a coupler (7).

7. The gravity energy storage coupled new energy power generation system according to claim 1 or 2, wherein the plurality of rails (5) are parallel rails.

8. The coupled gravity energy storage new energy power generation system according to claim 1 or 2, characterized in that the slope angle of the mountain (1) is 10 ° -80 °.

9. The coupled gravity energy storage new energy power generation system according to claim 8, wherein the slope angle of the mountain (1) is 30 ° -60 °.

10. The gravity energy storage coupled new energy generation system according to claim 1, wherein the standardized weight trolley (6) is provided with a brake device (10).

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