CN219671271U - Pumped storage system with multiple upper reservoirs - Google Patents

Abstract

The utility model provides a pumped storage system with a plurality of upper reservoirs, which comprises a plurality of upper reservoirs, wherein the upper reservoirs are communicated through a water delivery tunnel, and the water delivery tunnel is provided with a control gate; the lower reservoir is positioned below the upper reservoirs and forms a height difference with the upper reservoirs, and the lower reservoir is connected with one of the upper reservoirs through a water conveying pipeline. The utility model solves the problem of insufficient water capacity of a single upper reservoir, reduces the limitation of the natural single upper reservoir capacity on site selection, and expands the range of the settable pumped storage power station. The pumped storage system with a plurality of upper reservoirs has the advantages of high economic and social benefits, and combines flood control and power generation functions.

Description

Pumped storage system with multiple upper reservoirs

Technical Field

The utility model relates to the technical field of energy storage, in particular to a pumped storage system with a plurality of upper reservoirs.

Background

The pumped storage is an energy storage technology, adopts a mode of cutting a front and filling a valley, and pumps water in a lower reservoir to an upper reservoir through a water pump when the power grid load is low, so that electric energy is stored; when the load of the power grid is high, water in the upper reservoir is discharged to the lower reservoir through the water turbine, and potential energy is converted into electric energy. The energy storage device has the advantages of long service life, low energy storage cost, high energy storage efficiency, mature technology, low greening carbon and the like. But the density of the water stored energy is lower, and an upper reservoir and a lower reservoir with large capacity are needed, so that the site selection of the pumped storage power station is limited to a great extent.

Disclosure of Invention

In order to solve the problems, the utility model provides a pumped storage system with a plurality of upper reservoirs, so that the address selection of a pumped storage power station requiring a large capacity of the upper reservoirs can be more selected. For this purpose, the utility model adopts the following technical scheme:

a pumped storage system with a plurality of upper reservoirs comprises a lower reservoir, a water pump turbine unit and a water delivery pipeline; the water pumping and energy storing system is characterized by comprising a plurality of upper reservoirs, wherein the upper reservoirs are communicated through a water delivery tunnel, and the water delivery tunnel is provided with a control gate; the lower reservoir is positioned below the upper reservoirs and forms a height difference with the upper reservoirs, and the lower reservoir is connected with one of the upper reservoirs through the water conveying pipeline.

On the basis of adopting the technical scheme, the utility model can also adopt the following further technical schemes or use the further technical schemes in combination:

the lower reservoir is connected with an upper reservoir with a lower relative elevation in the upper reservoirs through the water delivery pipeline, and the upper reservoir with the lower relative elevation is arranged at the position closest to the lower reservoir compared with other upper reservoirs.

The water delivery tunnel is a flood diversion tunnel.

The water pump turbine unit is connected with the upper reservoir and the lower reservoir through water pipelines, one end of each water pipeline is connected with the upper reservoir, the other end of each water pipeline is connected with the water pump turbine unit, the water pump turbine unit is connected with the water pipeline again, and the other end of each water pipeline is connected with the lower reservoir.

The upper reservoir comprises a first upper reservoir and a second upper reservoir, and the first upper reservoir and the second upper reservoir are arranged left and right in a close elevation mode.

The utility model solves the problem of insufficient water capacity of a single upper reservoir, reduces the limitation of the natural single upper reservoir capacity on site selection, and expands the range of the settable pumped storage power station. The water pump turbine unit can be arranged in the dam body and can also be arranged in a water pipeline under conditions. The pumped storage system with a plurality of upper reservoirs has the advantages of high economic and social benefits, and combines flood control and power generation functions.

Drawings

In this embodiment, a pumped-storage system with two upper reservoirs is taken as an example for explanation, and fig. 1 is a schematic layout diagram of a pumped-storage system with two upper reservoirs according to the present utility model.

In the figure: 1. an upper left reservoir; 2. an upper right reservoir; 3. discharging the water from a reservoir; 4. a water pump turbine unit; 5. a water pipe; 6. flood diversion (water delivery) tunnels.

Detailed Description

The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.

Referring to fig. 1, the double upper reservoir pumped storage system of the present utility model includes a first upper reservoir, a second upper reservoir, a lower reservoir 3, a water pump-turbine set 4, a water pipe 5, and a flood diversion (water transfer) tunnel 6. The first upper reservoir and the second upper reservoir are preferably arranged left and right in a close elevation mode, namely a left upper reservoir 1 and a right upper reservoir 2.

The upper left reservoir 1 and the upper right reservoir 2 are arranged on a mountain with higher altitude, the lower reservoir 3 is positioned below the upper left reservoir 1 and the upper right reservoir 2, a height difference is formed between the upper left reservoir 1 and the upper right reservoir 2, and the water pump turbine unit 4 is connected with the upper right reservoir 2 and the lower reservoir 3 through a water pipeline 5, so that water in the upper right reservoir 2 and the lower reservoir 3 can be subjected to circulating energy storage and energy release under a certain height difference. The upper left reservoir 1 is communicated with the upper right reservoir 2 through a flood diversion (water delivery) tunnel 6, and a control gate is arranged on the flood diversion (water delivery) tunnel 6. The potential energy difference between the upper right reservoir 2 and the lower reservoir 3 is converted into electric energy through the water pump-turbine unit 4, and then the electric energy is transmitted to the power transmission device system.

In the prior art, the pumped storage system requires that the reservoir capacity is large enough, and for good ground conditions, the pumped storage system cannot be built in places where a single upper reservoir capacity is insufficient but a plurality of upper reservoir water sources exist.

According to the double-upper reservoir pumped storage system, under the condition that the capacity of a single upper reservoir does not meet the requirement, the requirement of the capacity of the upper reservoir is met by establishing a plurality of upper reservoirs and connecting the upper reservoirs through flood diversion (water delivery) tunnels. On one hand, the embodiment integrates the capacities of a plurality of upper reservoirs, meets the requirement of building a pumped storage system, and fully utilizes natural resources; on the other hand, the water resources on the mountain body are utilized to play a certain role in flood control.

The energy storage and release flow of the double-upper reservoir pumped storage system is explained as follows:

when the electricity consumption valley utilizes the double-upper reservoir pumped storage power station to store energy, the water pump and water turbine set 4 operates in a water pump mode and consumes redundant electric energy, namely, the water pump and water turbine set 4 conveys water of the lower reservoir 3 to the upper right reservoir 2 through the water conveying pipeline 5.

When the electricity consumption peak utilizes the double-upper reservoir pumped storage system to release energy, the water pump water turbine unit 4 operates in a water turbine mode and generates electric energy through the power transmission device system, namely water in the upper right reservoir 2 enters the water pump water turbine unit 4 through the water pipe 5 to do work and drive the generator unit to generate power, and then water discharged from the water pump water turbine unit 4 is conveyed to the lower reservoir 3 through the water pipe 5.

The upper left reservoir 1 and the upper right reservoir 2 are communicated with each other through a flood diversion (water delivery) tunnel 6 under the control of a flood diversion (water delivery) pipeline gate according to the reservoir capacity and the power generation requirement, so that the power generation requirements at different moments are met.

According to the embodiment, the pumped storage power station with multiple reservoirs can be built by integrating multiple water sources by the scheme provided by the utility model, and energy utilization is performed on the premise that multiple water sources exist but the water capacity of a single water source is insufficient for building the pumped storage power station.

Therefore, the double-upper reservoir pumped storage power station provided by the embodiment of the utility model has the advantages of high economic and social benefits, solves the problem of insufficient water capacity of a single upper reservoir, and has flood control and power generation functions.

In the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "controlled," "connected," "transferred," "integrated," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrated: can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the azimuth or positional relationship indicated by the terms "left", "right", etc. are based on the azimuth or positional relationship shown in fig. 1, and are merely for convenience of description of the present utility model and to simplify the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply that the first feature is higher in level than the second feature. The first feature being "under" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The description of the dual upper reservoir pumped storage system embodiment in the present utility model is not necessarily a dual upper reservoir embodiment, but rather a plurality of upper reservoir embodiments, and is not to be construed as limiting the utility model.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (5)

1. A pumped storage system with a plurality of upper reservoirs comprises a lower reservoir, a water pump turbine unit and a water delivery pipeline; the water pumping and energy storing system is characterized by comprising a plurality of upper reservoirs, wherein the upper reservoirs are communicated through a water delivery tunnel, and the water delivery tunnel is provided with a control gate; the lower reservoir is positioned below the upper reservoirs and forms a height difference with the upper reservoirs, and the lower reservoir is connected with one of the upper reservoirs through the water conveying pipeline.

2. A pumped storage system according to claim 1, wherein said lower reservoir is connected to a relatively lower elevation upper reservoir of the upper reservoirs by said water conduit, and said relatively lower elevation upper reservoir is positioned closest to the lower reservoir than the other upper reservoirs.

3. A pumped storage system having a plurality of upper reservoirs as claimed in claim 1, wherein said water delivery tunnels are flood diversion tunnels.

4. A pumped storage system with a plurality of upper reservoirs as set forth in claim 1, wherein said water pump-turbine units are connected to the upper reservoirs and the lower reservoirs by water pipes, one ends of which are connected to the upper reservoirs, one ends of which are connected to the water pump-turbine units, the water pump-turbine units are connected to the water pipes, and the other ends of which are connected to the lower reservoirs.

5. The pumped-hydro energy storage system as defined in claim 1, wherein the upper reservoir comprises a first upper reservoir and a second upper reservoir, the first upper reservoir and the second upper reservoir being disposed about an elevation.