CN116085174A - Pumped storage power station - Google Patents
Pumped storage power station Download PDFInfo
- Publication number
- CN116085174A CN116085174A CN202310306115.2A CN202310306115A CN116085174A CN 116085174 A CN116085174 A CN 116085174A CN 202310306115 A CN202310306115 A CN 202310306115A CN 116085174 A CN116085174 A CN 116085174A
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- China
- Prior art keywords
- water
- reservoir
- transition
- pumped
- storage power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 230000007704 transition Effects 0.000 claims abstract description 42
- 230000002441 reversible effect Effects 0.000 claims abstract description 14
- 238000004146 energy storage Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/02—Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention provides a pumped storage power station, which comprises an upper reservoir, a lower reservoir and a transition reservoir, wherein the upper reservoir, the lower reservoir and the transition reservoir are sequentially connected through a water diversion pipe, the transition reservoir comprises a reversible water turbine and a water storage tank, and the water diversion pipe is further connected between the reversible water turbine and the water storage tank. By adopting the technical scheme of the invention, the transition reservoir is arranged between the upper reservoir and the lower reservoir, and the transition reservoir has a grading effect on the water head difference between the upper reservoir and the lower reservoir, so that the water flow pressure of the water turbine in the single transition reservoir is greatly reduced, the probability of forming a water hammer in the water flow is reduced, the water turbine is prevented from bearing high water head impact, and the safe and stable operation of the water turbine is ensured.
Description
Technical Field
The invention belongs to the technical field of water conservancy and hydropower, and particularly relates to a pumped storage power station.
Background
Energy storage and electricity storage systems have become the most reasonable, economical and reliable peak shaving power supply accepted by countries around the world today. The construction energy storage power station is a reliable measure for meeting the peak regulation requirement increase of the power grid and consuming the residual electric energy of the power grid, is a requirement for improving the structure and the operation condition of the power grid and reducing the operation cost, is a requirement for enhancing the emergency reserve capacity of the power grid, is a requirement for matching with the operation of nuclear power stations, wind power and the like, has larger ecological and environmental benefits, and has lower engineering investment and shorter construction period.
For example, publication No.: patent literature of CN214836838U discloses an energy storage and electrical storage system. The water pump water turbine is characterized by comprising a water supply reservoir, wherein a pressure tunnel is arranged at the outlet end of the water supply reservoir, a pressure regulating well is arranged on the pressure tunnel, a water channel is connected to the downstream section of the pressure tunnel, a reversible water pump water turbine is arranged at the bottom end of the water channel, a tail water tunnel is connected to the water outlet end of the reversible water pump water turbine, a lower reservoir is arranged on the tail water tunnel, a bypass flow passage is arranged at the water outlet end of the reversible water pump water turbine, a pressure regulating valve is arranged on the bypass flow passage, and the outlet end of the pressure regulating valve is communicated with the tail water tunnel. According to the technology, the pressure regulating well is arranged on the outlet section of the upper reservoir, the pressure regulating valve is arranged on the outlet bypass channel of the reversible water pump water turbine, and the water flow pressure at the tail end of the reversible water pump water turbine and the rotating speed rising rate of the water flow pressure are effectively reduced through joint regulation protection of the pressure regulating well and the pressure regulating valve.
However, the pumped storage unit comprises two working conditions of pumping and power generation, the existing pumped storage power station is generally suitable for the range that the water head difference between an upper reservoir and a lower reservoir is 400-700m, if the water head difference between the upper reservoir and the lower reservoir exceeds 700m, when the pumped storage unit operates in the power generation working condition, the water head difference is overlarge, water hammer can be formed in water flow when the water flow discharging pressure is overlarge, the water hammer causes huge impact on a water turbine, the water turbine operates at a high rotating speed, the centrifugal force of the runner of the water turbine increases, the water turbine generates obvious 'stop effect', and the safe and stable operation of the water turbine unit is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a pumped storage power station.
The invention is realized by the following technical scheme.
The invention provides a pumped storage power station which comprises an upper reservoir, a lower reservoir and a transition reservoir, wherein the upper reservoir, the lower reservoir and the transition reservoir are sequentially connected through a water diversion pipe, the transition reservoir comprises a reversible water turbine and a water storage tank, and the water diversion pipe is further connected between the reversible water turbine and the water storage tank.
The water storage tank capacity is set as V, the number of transition reservoirs is n, n is a natural number, the water diversion pipe is further connected between any two adjacent transition reservoirs, the full-load flow of the water diversion pipe is Q, the preset drainage time of the pumped storage power station is h, and the following relational expression is satisfied among V, n, Q and h: v is more than or equal to nQh.
The capacities of any two water storage tanks are equal.
The water head difference between the upper reservoir and the lower reservoir is set as H, the number of the transition reservoirs is n, n is a natural number, and the water head difference between any two adjacent transition reservoirs is set as H/n.
The water head difference between the upper reservoir and the lower reservoir is 1500m, and the number of the transition reservoirs is 2.
The pumped storage power station also comprises a storehouse, and the transition reservoir is arranged in the storehouse.
And a gate valve is also connected between the water storage tank and the water diversion pipe.
The water storage tank is also connected with one end of a vent pipe, and the other end of the vent pipe stretches into the atmosphere.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the transition reservoir is arranged between the upper reservoir and the lower reservoir, and the transition reservoir has a grading effect on the water head difference between the upper reservoir and the lower reservoir, so that the water flow pressure of the water turbine in the single transition reservoir is greatly reduced, the probability of forming a water hammer in the water flow is reduced, the water turbine is prevented from bearing high water head impact, and the safe and stable operation of the water turbine is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of the transition reservoir of the present invention.
In the figure: 1-upper reservoir, 2-lower reservoir, 3-transition reservoir, 4-water conduit, 31-reversible water turbine, 32-water reservoir, 5-storehouse, 6-gate valve and 7-breather pipe.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the above.
As shown in fig. 1 and 2, the invention provides a pumped storage power station, which comprises an upper reservoir 1, a lower reservoir 2 and a transition reservoir 3, wherein the upper reservoir 1, the lower reservoir 2 and the transition reservoir 3 are sequentially connected through a water conduit 4, the transition reservoir 3 comprises a reversible water turbine 31 and a water storage tank 32, and the water conduit 4 is also connected between the reversible water turbine 31 and the water storage tank 32.
By adopting the technical scheme of the invention, the transition reservoir is arranged between the upper reservoir and the lower reservoir, and the transition reservoir has a grading effect on the water head difference between the upper reservoir and the lower reservoir, so that the water flow pressure of the water turbine in the single transition reservoir is greatly reduced, the probability of forming a water hammer in the water flow is reduced, the water turbine is prevented from bearing high water head impact, and the safe and stable operation of the water turbine is ensured.
Further, let the capacity of the water storage tank 32 be V, the number of the transition reservoirs 3 be n, n be a natural number, the water conduit 4 is further connected between any two adjacent transition reservoirs 3, the full-load flow of the water conduit 4 is Q, the preset drainage time of the pumped storage power station is h, and then the following relation is satisfied among V, n, Q and h: v is more than or equal to nQh. Preferably, any two reservoirs 32 are equal in capacity.
In addition, the water head difference between the upper reservoir 1 and the lower reservoir 2 is set as H, the number of the transition reservoirs 3 is n, n is a natural number, and the water head difference between any two adjacent transition reservoirs 3 is set as H/n. The water head difference between the upper reservoir 1 and the lower reservoir 2 is 1500m, and the number of the transition reservoirs 3 is 2, so that the water head difference between two adjacent transition reservoirs is only 1500/2=750m at the moment, thereby greatly slowing down the impact force of water flow on the water turbine and ensuring the safe and stable operation of the reversible water turbine.
In addition, the pumped storage power station also comprises a storehouse 5, and the transition reservoir 3 is arranged in the storehouse 5. A gate valve 6 is also connected between the reservoir 32 and the penstock 4. The reservoir 32 is also connected to one end of the vent pipe 7, the other end of the vent pipe 7 extending into the atmosphere. By adopting the technical scheme of the invention, in a single transition reservoir, tail water flowing through the water turbine is sent into the water storage tank, and is temporarily buffered in the water storage tank, so that the impact force of a water hammer is slowed down, the turbulence effect of water flow is reduced, the pressure of the water flow sent into the next stage of water turbine is kept proper, and the safe and stable operation of the water turbine is further ensured.
Claims (8)
1. A pumped storage power station, characterized in that: the water diversion device comprises an upper reservoir (1), a lower reservoir (2) and a transition reservoir (3), wherein the upper reservoir (1), the lower reservoir (2) and the transition reservoir (3) are sequentially connected through a water diversion pipe (4), the transition reservoir (3) comprises a reversible water turbine (31) and a water storage tank (32), and the water diversion pipe (4) is further connected between the reversible water turbine (31) and the water storage tank (32).
2. A pumped-storage power plant as claimed in claim 1, characterized in that: let reservoir (32) capacity be V, transition reservoir (3) quantity is n, and n is natural number, water conduit (4) still connect between arbitrary two adjacent transition reservoirs (3), water conduit (4) full load flow is Q, the drainage time of pumped storage power station presets is h, then satisfies following relational expression between V, n, Q and the h: v is more than or equal to nQh.
3. A pumped-storage power plant as claimed in claim 2, characterized in that: the capacities of any two water reservoirs (32) are equal.
4. A pumped-storage power plant as claimed in claim 1, characterized in that: the water head difference between the upper reservoir (1) and the lower reservoir (2) is set to be H, the number of the transition reservoirs (3) is n, n is a natural number, and the water head difference between any two adjacent transition reservoirs (3) is set to be H/n.
5. A pumped-storage power plant as claimed in claim 4, characterized in that: the water head difference between the upper reservoir (1) and the lower reservoir (2) is 1500m, and the number of the transition reservoirs (3) is 2.
6. A pumped-hydro energy storage plant as defined in any one of claims 1 or 2 or 4 or 5 wherein: the pumped storage power station also comprises a storehouse (5), and the transition reservoir (3) is arranged in the storehouse (5).
7. A pumped-storage power plant according to claim 1 or 2, characterized in that: a gate valve (6) is also connected between the water reservoir (32) and the water conduit (4).
8. A pumped-storage power plant as claimed in claim 6, characterized in that: the water storage tank (32) is also connected with one end of the vent pipe (7), and the other end of the vent pipe (7) stretches into the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310306115.2A CN116085174A (en) | 2023-03-27 | 2023-03-27 | Pumped storage power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310306115.2A CN116085174A (en) | 2023-03-27 | 2023-03-27 | Pumped storage power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116085174A true CN116085174A (en) | 2023-05-09 |
Family
ID=86212304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310306115.2A Pending CN116085174A (en) | 2023-03-27 | 2023-03-27 | Pumped storage power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116085174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117144863A (en) * | 2023-09-28 | 2023-12-01 | 中国电建集团北京勘测设计研究院有限公司 | Step pumped storage power station |
-
2023
- 2023-03-27 CN CN202310306115.2A patent/CN116085174A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117144863A (en) * | 2023-09-28 | 2023-12-01 | 中国电建集团北京勘测设计研究院有限公司 | Step pumped storage power station |
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