CN217267331U

CN217267331U - Pumped storage power station arrangement structure

Info

Publication number: CN217267331U
Application number: CN202221167069.XU
Authority: CN
Inventors: 钟权; 龙军飞; 赵群章
Original assignee: PowerChina Chengdu Engineering Co Ltd
Current assignee: PowerChina Chengdu Engineering Co Ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-08-23
Anticipated expiration: 2032-05-16

Abstract

The utility model relates to a pumped storage power station arrangement structure belongs to hydroelectric engineering technical field. The utility model discloses a go up the reservoir, lower reservoir and connect water transmission power generation system between them, still include first tributary and second tributary, wherein first tributary is compared and more is close to the reservoir in the second tributary, first tributary is provided with first manger plate dam in order to form reservoir down, the second tributary is provided with the second manger plate dam in order to form the regulation reservoir, the top elevation of second manger plate dam is higher than the top elevation of first manger plate dam, it is linked together through the moisturizing hole with lower reservoir to adjust the reservoir, the upstream end in moisturizing hole is for connecting this one end of adjusting the reservoir, be provided with the gate in the moisturizing hole. The utility model discloses satisfying under the prerequisite of the required storage capacity of engineering electricity generation, can ensure on the one hand that the water delivery electricity generation circuit is shortest, save the engineering investment, on the other hand can also avoid important village to be flooded, reduces and moves the people and settle the investment.

Description

Arrangement structure of pumped storage power station

Technical Field

The utility model relates to a pumped storage power station arrangement structure belongs to water and electricity engineering technical field.

Background

With the large-scale development of new energy such as wind power, photovoltaic and the like, a novel power system taking the new energy as a main body is gradually constructed, and the demand on a flexible power supply is more urgent. The pumped storage power station has the functions of peak regulation, frequency modulation and the like, can ensure the safety of a power system, and promotes the large-scale development and consumption of system energy.

Pumped storage power stations generally include upper and lower reservoirs, water delivery systems, power plants, and the like. The upper reservoir and the lower reservoir generally need the storage capacity of about several million or thousands of cubic meters, the operation of the power station is divided into a water pumping working condition and a power generation working condition, redundant power is pumped by a reversible water pumping and power generation dual-purpose unit in the power utilization valley, the water in the lower reservoir is pumped to the upper reservoir, and the water is discharged to generate power in the power utilization peak. When the pumped storage power station is arranged, the pumped storage power station is often influenced by factors such as topographic conditions, environmental protection and immigration. For example, after the position of the upper reservoir with better comprehensive conditions is determined, when the water inlet/outlet of the lower reservoir is positioned near the junction of two rivers, the decision may be made to be two-difficult, and if the water inlet/outlet of the lower reservoir is arranged at the downstream of the junction or at a branch near the upper reservoir, an important village near the branch near the upper reservoir may be submerged due to the higher water level of the lower reservoir; if the water inlet/outlet of the lower reservoir is arranged in the branch far away from the upper reservoir, not only the water transmission and power generation line is increased, but also a plurality of technical problems that the water transmission and power generation line passes through another branch and the burial depth is insufficient are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: the pumped storage power station arrangement structure capable of saving engineering investment is provided.

For solving the technical problem the utility model discloses the technical scheme who adopts is: the utility model provides a pumped storage power station arrangement structure, including last reservoir, lower reservoir and connect water transmission power generation system between them, still include first tributary and second tributary, wherein first tributary is compared and is more close to last reservoir in the second tributary, first tributary is provided with reservoir under first manger plate dam is in order to form, the second tributary is provided with second manger plate dam in order to form and adjusts the reservoir, the top elevation of second manger plate dam is higher than the top elevation of first manger plate dam, it is linked together through the moisturizing hole to adjust reservoir and lower reservoir, the upstream end of moisturizing hole is for connecting this one end of adjusting the reservoir, be provided with the control gate in the moisturizing hole.

Further, the method comprises the following steps: and a hydraulic generator is arranged on a water delivery line of the water replenishing hole.

Further, the method comprises the following steps: the first retaining dam is provided with a drain hole and an overflow hole which are communicated with the lower reservoir and the downstream river channel, and a gate is arranged in the drain hole.

Further, the method comprises the following steps: the second retaining dam is provided with a drain hole and an overflow hole which are communicated with the regulating reservoir and the downstream river channel, and a gate is arranged in the drain hole.

Further, the method comprises the following steps: the first branch and the second branch are intersected to form a main flow, and the first retaining dam and the second retaining dam are arranged close to an intersection of the first branch and the second branch.

The utility model has the advantages that: the first retaining dam is a short dam, so that the water level of a lower reservoir can be ensured to be lower than that of an important village, and the submerging loss is reduced. And a second dam arranged in the second branch is a high dam, and the sum of the storage capacity of the reservoir and the available storage capacity of the lower reservoir can be adjusted to meet the engineering requirement. After the structural arrangement mode is adopted, the water transmission and power generation line can be designed at the shortest suitable position, the reservoir can be over against the first branch in theory, and the engineering investment is saved to the greatest extent. According to the above analysis, the utility model discloses satisfying under the prerequisite of the required storage capacity of engineering electricity generation, can ensure on the one hand that water delivery power generation circuit is shortest, save the engineering investment, on the other hand can also avoid important village to be flooded, reduces and moves the people and settle the investment.

Drawings

Fig. 1 is a schematic plan view of the present invention;

fig. 2 is a schematic elevation view of the present invention.

The labels in the figure are: 1-an upper reservoir, 2-a lower reservoir, 3-a water delivery and power generation system, 4-a first retaining dam, 5-a second retaining dam, 6-a regulation reservoir, 7-a power generation plant, 8-an important village, 9-a first branch, 10-a second branch, 11-a water replenishing hole, 12-a main flow, 13-a control gate and 14-a ground line.

Detailed Description

For the convenience of understanding and implementing the present invention, preferred embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model discloses an go up reservoir 1, lower reservoir 2 and connect water transmission power generation system 3 between them, still include first tributary 9 and second tributary 10, wherein first tributary 9 is more for being close to last reservoir 1 than second tributary 10, first tributary 9 is provided with first manger plate dam 4 in order to form lower reservoir 2, second tributary 10 is provided with second manger plate dam 5 in order to form regulation reservoir 6, the top elevation of second manger plate dam 5 is higher than the top elevation of first manger plate dam 4, it is linked together through moisturizing hole 11 with lower reservoir 2 to adjust reservoir 6, this one end of moisturizing hole 11 is for connecting regulation reservoir 6's upper reaches, be provided with control gate 13 in the moisturizing hole 11.

In practice, the upper reservoir 1 is preferably positioned and generally unique (i.e., the upper reservoir 1 is selected without problems and the upper reservoir 1 cannot be adjusted according to the position of the lower reservoir 2). If a short dam is directly built at the position, right opposite to the first branch flow 9, of the upper reservoir 1 to stop water, important villages 8 (in different cases, other important facility and equipment building structures are possible) cannot be submerged, but the reservoir capacity is insufficient; if a high dam is built at the upper reservoir 1 just opposite the river or downstream of the junction, the reservoir capacity is sufficient but would flood the important villages 8. If the requirement of sufficient storage capacity and not submerging important villages 8 is met, only a high dam can be built in the second branch 10, but the water transmission and power generation line is increased, and the technical problems that the water transmission and power generation line passes through another branch and the burial depth is insufficient are caused.

The utility model discloses a first retaining dam 4 and second retaining dam 5's integrated configuration then can overcome above-mentioned defect. Wherein, the first retaining dam 4 is a short dam, which can ensure that the water level of the lower reservoir 2 is lower than the important village 8, thereby reducing the submergence loss. The second retaining dam 5 arranged on the second branch 10 is a high dam, and the sum of the storage capacity of the adjusting reservoir 6 and the available storage capacity of the lower reservoir 2 can be used for meeting engineering requirements. The utility model discloses when designing water delivery power generation line, can not be influenced by important village 8's position for water delivery power generation line designs in shortest suitable position, thereby practices thrift the engineering investment. In addition, compare in the scheme of building the high dam in second tributary 10, the utility model discloses the flood peak that utilizes is higher, the generated energy is bigger.

Under the water pumping working condition, the water in the lower reservoir 2 is pumped into the upper reservoir 1 through the water delivery power generation system 3, and meanwhile, the water replenishing hole 11 is opened to discharge water and supply water to the lower reservoir 2; under the power generation working condition, the water in the upper reservoir 1 generates power through the water delivery power generation system 3 and flows to the lower reservoir 2 in a parallel mode, and the redundant water flows to the downstream.

Preferably, a hydraulic generator is installed on the water delivery line of the water replenishing hole 11 to generate power, so as to increase the benefit.

Preferably, the first retaining dam 4 is provided with a drain hole and an overflow hole communicating the lower reservoir 2 and the downstream river, and a gate is provided in the drain hole. The drain hole of the first retaining dam 4 can facilitate the downstream water supply of the lower reservoir 2, and the overflow hole can ensure the safe operation of the lower reservoir 2.

Preferably, the second dam 5 is provided with a drain hole and an overflow hole for communicating the regulating reservoir 6 with a downstream river, and a gate is provided in the drain hole. The drain hole of the second dam 5 can facilitate the adjustment reservoir 6 to discharge the surplus water downstream, and the overflow hole can ensure the operation safety of the adjustment reservoir 6.

Preferably, the main flow 12 is formed after the first branch flow 9 and the second branch flow 10 are intersected, and the first water retaining dam 4 and the second water retaining dam 5 are both arranged close to the intersection of the first branch flow 9 and the second branch flow 10. Therefore, the length of the water replenishing hole 11 can be shortened to the maximum extent, and the project investment is further reduced.

Claims

1. A pumped storage power station arrangement comprising an upper reservoir (1), a lower reservoir (2) and a water delivery and power generation system (3) connecting the two, further comprising a first branch (9) and a second branch (10), wherein the first branch (9) is closer to the upper reservoir (1) than the second branch (10), characterized in that: first tributary (9) are provided with first manger plate dam (4) in order to form lower reservoir (2), second tributary (10) are provided with second manger plate dam (5) in order to form regulation reservoir (6), the top elevation of second manger plate dam (5) is higher than the top elevation of first manger plate dam (4), it is linked together through moisturizing hole (11) to adjust reservoir (6) and lower reservoir (2), this one end of upstream end for connecting regulation reservoir (6) of moisturizing hole (11), be provided with control gate (13) in moisturizing hole (11).

2. The pumped-storage power plant arrangement of claim 1, wherein: a hydraulic generator is arranged on the water delivery line of the water replenishing hole (11).

3. A pumped-storage power plant arrangement according to claim 1 or 2, characterized in that: the first retaining dam (4) is provided with a drain hole and an overflow hole which are communicated with the lower reservoir (2) and a downstream river channel, and a gate is arranged in the drain hole.

4. The pumped-hydro power storage plant arrangement of claim 1 or 2, wherein: the second retaining dam (5) is provided with a drain hole and an overflow hole which are communicated with the regulating reservoir (6) and a downstream river channel, and a gate is arranged in the drain hole.

5. The pumped-hydro power storage plant arrangement of claim 1 or 2, wherein: the main flow (12) is formed after the first branch flow (9) and the second branch flow (10) are intersected, and the first retaining dam (4) and the second retaining dam (5) are arranged close to an intersection of the first branch flow (9) and the second branch flow (10).