CN217710608U

CN217710608U - Reservoir arrangement structure of pumped storage power station

Info

Publication number: CN217710608U
Application number: CN202221464142.XU
Authority: CN
Inventors: 钟权; 刘斌; 杨海红
Original assignee: PowerChina Chengdu Engineering Co Ltd
Current assignee: PowerChina Chengdu Engineering Co Ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-11-01
Anticipated expiration: 2032-06-13

Abstract

The utility model relates to a pumped storage power station reservoir arrangement structure belongs to hydroelectric engineering technical field. The utility model discloses a water delivery power generation system and locate the first manger plate dam in the river course, the upper reaches side at first manger plate dam is provided with the second manger plate dam, by first manger plate dam, second manger plate dam and both sides massif enclose to keep off and form first reservoir, form the second reservoir in the upper reaches side of second manger plate dam, the second manger plate dam is provided with the limbers of intercommunication first reservoir and second reservoir, the limbers level sets up, be provided with the gate in the limbers, water delivery power generation system's inlet outlet arranges in first reservoir. The utility model discloses satisfying under the prerequisite of the required storage capacity of engineering power generation, can avoiding important village to be flooded, reducing and moving the people and settling the investment, the water resource of first reservoir and second reservoir all can fully be by pumped storage power station cyclic utilization moreover, has ensured the benefit of generating electricity.

Description

Reservoir arrangement structure of pumped storage power station

Technical Field

The utility model relates to a pumped storage power station reservoir arrangement structure belongs to hydroelectric 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 the flexibility regulation 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 an upper reservoir, a lower reservoir, a water delivery system, a power plant, 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 and geological conditions, environmental protection, immigration and the like. For example, when selecting an upper reservoir or a lower reservoir, natural gully terrain is generally used, a dam is built at a proper position, and water is retained by mountains around a basin, so that sufficient effective storage capacity is formed. However, when important villages are upstream of the dam site planned by the reservoir, if the damming water is enough to form effective reservoir capacity, the important villages can be submerged due to high water level of the damming water; if the water level of the water retaining pipe is lower than that of the important village, the water retaining pipe may not have enough effective storage capacity.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the reservoir arrangement structure of the pumped storage power station can not submerge important villages in the upstream and can ensure enough effective storage capacity.

For solving the technical problem the utility model discloses the technical scheme who adopts is: pumped storage power station reservoir arrangement structure, including water delivery power generation system with locate the first manger plate dam in the river course, be provided with the second manger plate dam at the upstream side of first manger plate dam, enclose by first manger plate dam, second manger plate dam and both sides massif and keep off and form first reservoir, form the second reservoir at the upstream side of second manger plate dam, the second manger plate dam is provided with the limbers that communicate first reservoir and second reservoir, the limbers level sets up, be provided with the gate in the limbers, water delivery power generation system's inlet outlet arranges in first reservoir.

Further, the method comprises the following steps: the first retaining dam and the second retaining dam have the same top elevation.

Further, the method comprises the following steps: the first reservoir and the second reservoir have the same dead water level, and the elevation of the bottom plate of the water through hole is not higher than the dead water level.

Further, the method comprises the following steps: the first retaining dam is provided with a flood discharge facility.

The utility model has the advantages that: the first reservoir and the second reservoir are communicated through the limber holes in the second water retaining dam, and the water levels of the two reservoirs can be controlled through valves in the limber holes. When the system is implemented, the corresponding water level of the first reservoir is a normal water storage level and a dead water level, the corresponding water level of the second reservoir is an upstream highest water level and a dead water level, and the relation is that the normal water storage level is larger than the upstream highest water level and the dead water level is larger than the upstream highest water level. The effective storage capacity of the first reservoir is the storage capacity between the normal water storage level and the dead water level; the effective storage capacity of the second reservoir is the storage capacity between the upstream highest water level and the dead water level, and the sum of the effective storage capacities of the first reservoir and the second reservoir can meet the engineering requirement. The important villages are located at the upstream of the second reservoir, and the highest water level of the upstream corresponding to the second reservoir can ensure that the important villages cannot be submerged.

Suppose this scheme is applied to reservoir down: when the water pumping working condition is adopted, the gate is closed, the water level of the first reservoir is a normal water storage level, the water level of the second reservoir is an upstream highest water level, the water of the first reservoir is pumped into the upper reservoir through the water inlet and outlet, when the reservoir water level of the first reservoir is lowered to be lower than the upstream highest water level, the gate is opened, the water of the second reservoir flows to the first reservoir until the water levels of the two reservoirs are dead water levels; when the water level of the reservoir rises to the upstream highest water level, the gate is closed, the water level of the second reservoir is stabilized at the upstream highest water level, and the water level of the first reservoir continues to rise to the normal water storage level.

If the scheme is an upper reservoir, the implementation mode is opposite.

According to the above implementation process, the utility model discloses under the prerequisite that satisfies the required storage capacity of engineering power generation, can avoid important village to be flooded, reduce and move the people and settle the investment, the water resource of first reservoir and second reservoir all can be fully utilized by pumped storage power station cyclic utilization moreover, has ensured the benefit of generating electricity.

Drawings

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

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

Fig. 3 is a cross-river sectional view of the second dam of the present invention.

The mark in the figure is: 1-a first reservoir, 2-a second reservoir, 3-a water delivery and power generation system, 4-a first retaining dam, 5-a second retaining dam, 6-a limber hole, 7-a gate, 8-an important village, 9-a ground line, 101-a first reservoir dead water level, 102-a first reservoir normal water storage level, 103-an upstream highest water level and 104-a second reservoir dead water level.

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 to 3, the utility model discloses a water power generation system 3 and locate first manger plate dam 4 in the river course, upstream side at first manger plate dam 4 is provided with second manger plate dam 5, by first manger plate dam 4, second manger plate dam 5 and both sides massif enclose to keep off and form first reservoir 1, upstream side at second manger plate dam 5 forms second reservoir 2, second manger plate dam 5 is provided with limbers 6 that communicate first reservoir 1 and second reservoir 2, limbers 6 level sets up, be provided with gate 7 in the limbers 6, the inlet and outlet of water power generation system 3 arranges in first reservoir 1.

Wherein, the gate 7 can be controlled by arranging a conventional opening and closing mechanism on the top of the dam. In specific implementation, due to the existence of the important villages 8, if a single dam is directly arranged in a river channel for retaining water, no matter how the position of the dam is selected, if the requirement of engineering reservoir capacity is to be met, immigration placement is required, otherwise the important villages 8 are easily submerged. And the utility model discloses a first manger plate dam 4 and the second manger plate dam 5 of arranging side by side can form first reservoir 1 and second reservoir 2 to two reservoirs form the intercommunication relation by limbers 6 in the second manger plate dam 5, can control the water level of two reservoirs through valve 7 in the limbers 6. In implementation, the corresponding water levels of the first reservoir 1 are a normal storage level and a dead water level (see a first reservoir dead water level 101 and a first reservoir normal storage level 102 in the figure), and the corresponding water levels of the second reservoir 2 are an upstream highest water level and a dead water level (see an upstream highest water level 103 and a second reservoir dead water level 104 in the figure), and the relationship is that the first reservoir normal storage level 102 is greater than the upstream highest water level 103 is greater than the dead water level (the first reservoir dead water level 101 is the same as the second reservoir dead water level 104). The effective storage capacity of the first reservoir 1 is the storage capacity between the dead water level 101 of the first reservoir and the normal storage level 102 of the first reservoir; the effective storage capacity of the second reservoir 2 is the storage capacity between the upstream highest water level 103 and the second reservoir dead water level 104. Suppose this scheme is applied to lower reservoir: under the water pumping working condition, the gate 7 is closed, the water level of the first reservoir 1 is a normal water storage level (shown as a normal water storage level 102 of the first reservoir in the figure), the water level of the second reservoir 2 is an upstream highest water level 103, water of the first reservoir 1 is pumped into the upper reservoir through a water inlet and a water outlet of the water transmission and power generation system 3, when the reservoir water level of the first reservoir 1 is lowered to be lower than the upstream highest water level 103, the gate 7 is opened, and water of the second reservoir 2 flows to the first reservoir 1 until the water levels of the two reservoirs are dead water levels; when the water level of the two reservoirs is the dead water level under the power generation working condition, the gate 7 is firstly opened, the water of the upper reservoir flows to the first reservoir 1 through the water delivery and power generation system 3 and flows to the second reservoir 2 through the gate 7, after the reservoir water level rises to the upstream highest water level 103, the gate 7 is closed, the water level of the second reservoir 2 is stabilized at the upstream highest water level 103, and the water level of the first reservoir 1 continues to rise to the normal water storage level. If the scheme is an upper reservoir, the implementation mode is opposite.

The sum of the effective storage capacities of the first reservoir 1 and the second reservoir 2 can satisfy the engineering requirements. The important villages 8 (or other important buildings) are located upstream of the second dam 5, and the corresponding upstream maximum water level 103 of the second reservoir 2 ensures that the important villages 8 are not submerged. The water in the first reservoir 1 and the water in the second reservoir 2 can be mutually circulated, and water resources can be fully recycled by the pumped storage power station, so that the power generation benefit is ensured.

Preferably, the heights of the tops of the first retaining dam 4 and the second retaining dam 5 are the same. Thus, the first retaining dam 4 and the second retaining dam 5 can be ensured to fully play a role, so that the first reservoir 1 has the maximum effective storage capacity.

Preferably, the dead water levels of the first reservoir 1 and the second reservoir 2 are the same, and the elevation of the bottom plate of the water through hole 6 is not higher than the dead water level, so that the water of the two reservoirs can freely circulate when the water is at the dead water level. The specific difference between the elevation of the bottom plate of the water through hole 6 and the dead water level can be calculated according to the designed flow and the width of the gate 7.

Preferably, the first dam 4 is provided with a flood discharge facility for discharging the upstream incoming water to the downstream waterway.

Claims

1. Pumped storage power station reservoir arrangement structure includes water delivery power generation system (3) and locates first manger plate dam (4) in the river course, its characterized in that: the water supply system is characterized in that a second retaining dam (5) is arranged on the upstream side of the first retaining dam (4), a first reservoir (1) is formed by the first retaining dam (4), the second retaining dam (5) and two banks of mountain bodies in a surrounding mode, a second reservoir (2) is formed on the upstream side of the second retaining dam (5), a water through hole (6) for communicating the first reservoir (1) with the second reservoir (2) is formed in the second retaining dam (5), the water through hole (6) is horizontally arranged, a gate (7) is arranged in the water through hole (6), and a water inlet and a water outlet of the water transmission power generation system (3) are arranged in the first reservoir (1).

2. The pumped-storage power station reservoir arrangement of claim 1, wherein: the first retaining dam (4) and the second retaining dam (5) have the same top elevation.

3. The pumped-storage power station reservoir arrangement of claim 1, wherein: the dead water levels of the first reservoir (1) and the second reservoir (2) are the same, and the elevation of the bottom plate of the water through hole (6) is not higher than the dead water level.

4. The pumped-storage power station reservoir arrangement of any of claims 1 to 3, wherein: the first retaining dam (4) is provided with a flood discharge facility.