CN108979939B - Cooperative operation system and method for wind power generation, pumped storage power generation and waterpower supply - Google Patents
Cooperative operation system and method for wind power generation, pumped storage power generation and waterpower supply Download PDFInfo
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- CN108979939B CN108979939B CN201810600709.3A CN201810600709A CN108979939B CN 108979939 B CN108979939 B CN 108979939B CN 201810600709 A CN201810600709 A CN 201810600709A CN 108979939 B CN108979939 B CN 108979939B
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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
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/008—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with water energy converters, e.g. a water turbine
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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
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/10—Combinations of wind motors with apparatus storing energy
- F03D9/13—Combinations of wind motors with apparatus storing energy storing gravitational potential energy
- F03D9/14—Combinations of wind motors with apparatus storing energy storing gravitational potential energy using liquids
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/50—Hydropower in dwellings
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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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- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention discloses a cooperative operation system of wind power generation, pumped storage power generation and hydraulic power supply, which comprises a wind power generation system, a pumped storage power generation system, a hydraulic power supply system and a coordination control processor, wherein the wind power generation system is connected with the pumped storage power generation system; a power supply circuit is respectively arranged between the electric energy output end of the wind power generation system and the power supply input ends of the pumped storage water pump and the water tower water pump; the coordination control processor calculates the residual generated energy of the wind power generation system, controls the on-off of each power supply circuit and the operation of the pumped storage water pump and the water tank water pump according to the residual generated energy, so that the residual generated energy of the wind power generation system provides a working power supply for the water tank water pump or the pumped storage water pump, and the priority of the water tank water pump for utilizing the residual generated energy is higher than that of the pumped storage water pump. The invention can improve the utilization rate of wind power, reduce the abandoned wind, and simultaneously adjust the peak and fill the valley through pumped storage; the problem of insufficient water pressure of high-rise residents in the water consumption peak period can be solved.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to an integrated system and method for cooperative work of wind power generation, pumped storage power generation and urban waterpower supply.
Background
Wind power is one of renewable energy sources, is clean to use, has low cost and inexhaustible use, and the wind power generation is more and more valued by countries in the world. Meanwhile, the wind power also has the defects of large air abandon amount, instability, inverse peak regulation characteristic and the like. With the development of wind power generation technology, the problem of great wind abandon is urgently solved.
In the existing research, the problem of wind abandonment is mostly solved by adopting schemes of on-site consumption or planning and building peak shaving, frequency modulation power supplies and the like such as pumped storage, gas power generation and the like. The mode of the combined operation of wind power and other power plants is gradually mature, however, an integrated system of the combined operation of wind power, urban water supply and pumped storage is not available in the prior art.
Disclosure of Invention
The invention aims to provide a cooperative operation system and a method for wind power generation, pumped storage power generation and hydraulic supply, which ensure power supply during power utilization peak and ensure water supply pressure during water utilization peak by adjusting cooperative work of the wind power generation, the pumped storage power generation and the hydraulic supply.
The technical scheme adopted by the invention is as follows: a cooperative operation system of wind power generation, pumped storage power generation and hydraulic power supply comprises a wind power generation system, a pumped storage power generation system, a hydraulic power supply system and a coordination control processor;
the wind power generation system comprises an electric energy output end for outputting electric energy to a public power grid; the pumped storage power generation system comprises a pumped storage water pump; the hydraulic power supply system comprises a water tower water tank and a water tank water pump for pumping water to the water tower water tank;
a power supply circuit is respectively arranged between the electric energy output end of the wind power generation system and the power supply input ends of the pumped storage water pump and the water tower water pump;
the coordination control processor obtains external wind power demand information and generated energy information of the wind power generation system, calculates generated energy surplus of the wind power generation system according to the obtained information, controls the on-off of each power supply circuit and the operation of the water pumping and energy storage water pump and the water tank water pump according to the generated energy surplus, enables the surplus generated energy of the wind power generation system to provide a working power supply for the water tank water pump or the water pumping and energy storage water pump, and enables the utilization priority of the surplus generated energy of the water tank water pump to be larger than that of the water pumping and energy storage water pump.
Preferably, a power supply circuit is arranged between the power supply output end of the pumped storage power generation system and the power supply input end of the water tower water pump; the power supply circuit is controlled to be switched on and off by the coordination control processor. The electric energy generated by the pumped storage power generation system can provide electric energy for the water supply of the water tower water tank during the peak of electricity and water consumption, and the water supply of high-rise users is guaranteed.
Preferably, the power output end of the pumped storage power generation system further comprises an electric energy output circuit for outputting electric energy to a public power grid; and the coordination control processor controls the on-off of the electric energy output circuit according to the surplus generated energy. Namely, when the external wind power demand is larger than the generated energy which can be provided by the wind power generation system, the generated energy of the pumped storage power generation system is used for making up the external wind power demand.
Preferably, a water level sensor is arranged in the water tower water tank, and the water level sensor detects a water level signal in the water tower water tank and transmits the water level signal to the coordination control processor; and the coordination control processor controls the residual generated energy of the wind power generation system to provide a working power supply for the water tank water pump or provide a working power supply for the pumped storage water pump by controlling the on-off of the corresponding power supply circuit according to the received water level signal. When the water level in the water tank of the water tower is crossed to the bottom and the generated energy of the wind power generation system is remained, the wind power remained electric quantity is preferentially utilized to transmit electric energy to the water conservancy supply system so as to fill water into the water tank of the water tower.
Preferably, the hydraulic power supply system further comprises a hydraulic power supply pipeline for communicating the water tower water tank with a high-rise user, a water pressure sensor is arranged on the hydraulic power supply pipeline, and a signal output end of the water pressure sensor is connected with the coordination control processor.
Preferably, in the hydraulic power supply system, the water tank pump further comprises an external power supply circuit, and the coordination control processor controls the conduction of the external power supply circuit and the operation of the water tank pump according to the water pressure data detected by the water pressure sensor so as to provide working power for the water tank pump through the external power supply. The external power supply can be a power supply connected to a public power grid or the generated energy of an energy storage module or a pumped storage power generation system.
Preferably, the hydraulic power supply system also comprises a reservoir and a water pumping pipe communicated with an external water supply pipe, and the water tank pump is arranged on the water pumping pipe; the water pumping pipes on two sides of the water pump of the water tank are respectively provided with a pressure controller and a pressure gauge; the control end of the pressure controller and the signal output end of the pressure gauge are respectively connected with the coordination control processor. The pressure controller can adopt a pressure control valve, and the combined arrangement of the pressure controller and a pressure gauge can be used for controlling and feeding back the water pressure in the water pumping pipeline, so that the safety of the water pumping process is guaranteed while the water pressure is guaranteed.
In the invention, the on-off control of each power supply circuit and each electric energy output circuit by the coordination control processor is realized by a relay, which is the prior art.
The invention also discloses a cooperative operation method of the cooperative operation system based on the wind power generation, the pumped storage power generation and the waterpower supply, which comprises the following steps:
s1, obtaining external wind power demand information;
s2, acquiring the generating capacity information of the wind power generation system;
s3, detecting water level information in a water tower tank and water pressure information on a hydraulic supply pipeline;
s4, calculating the surplus of the generated energy of the wind power generation system, wherein the surplus of the generated energy = the generated energy-external wind power demand;
and S5, controlling the power output direction of the wind power generation system according to the surplus generated power:
if the residual generated energy is less than or equal to 0, controlling the wind power generation system to only transmit the generated energy to the public power grid;
if the residual power generation is larger than 0, the step is switched to S6;
s6, judging whether the water tower water tank is full according to the water level information of the water tower water tank: if so, controlling the residual generated energy of the wind power generation system to provide a working power supply for the pumped storage water pump, and turning to S5 after a set time interval; if the water tank is not full, controlling the residual generated energy of the wind power generation system to provide a working power supply for the water tank water pump, and then turning to S7;
and S7, controlling the operation of the water pump of the water tank according to the water pressure information on the hydraulic power supply pipeline: if the water pressure meets the set water pressure, the step is switched to S6, otherwise, other external power supplies are connected to provide working power for the water tank pump to assist in pumping water, and the step S7 is repeated until the water pressure meets the set water pressure, and the step is switched to S6.
By utilizing the method, the electric energy generated by the wind power generation system can be firstly used for guaranteeing the electricity consumption of users and then used for guaranteeing the water supply of the users, and when the electricity consumption and the water pressure are lower, the electric energy generated by the wind power generation system can be used for the pumped storage of the pumped storage power generation system, so that when the electricity consumption or the water pressure is higher, the electric energy generated by the pumped storage power generation system is utilized to make up for the power vacancy.
Further, in S5, if the remaining power generation amount of the wind power generation system is less than 0, the pumped storage power generation system is controlled to transmit the generated power to the utility grid. Namely, the priority for guaranteeing the power supply of the user is higher than the priority for guaranteeing the water supply of the user.
Advantageous effects
According to the invention, when the power consumption requirement is low at night or under other conditions, part of the electric energy generated by the fan is used for meeting the power consumption requirement of a user, and the rest of the electric energy is supplied to the water tank water pump of the hydraulic power supply system, so that tap water is pumped to the top water tank until the water tank is full. And then the residual electric energy is supplied to a pumped storage power station, so that the water in the lower reservoir is pumped to the upper reservoir for later use. When the electricity pressure is high in the daytime or the wind power supply is insufficient, the generated energy of the wind power generation system is firstly used for meeting the electricity demand of users, and meanwhile, the pumped storage power station can be started to make up the vacancy of the power demand. The hydraulic power supply system can utilize the full water tower and water tank and the external power supply to provide users at the same time.
In conclusion, the system and the method can improve the utilization rate of wind power, reduce the abandoned wind and simultaneously adjust the peak and fill the valley through pumped storage; the problem of insufficient water pressure of high-rise residents in the water consumption peak period can be solved.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of the system architecture of the present invention;
the system comprises a wind driven generator 1, a coordination control processor 2, an upper reservoir 3, a water outlet pipe 4, a water outlet pipe 5, a pumped storage water pump control line 6, a water inlet pipe 7, a pumped storage water pump 8, a lower reservoir 9, a water tank water pump control line 10, a pressure controller 11, a water supply pipe 12, a water tank water pump 13, a water pressure meter 14, a reservoir 15, a water tank water inlet pipe 16, a water tower water tank 17, a high-rise user hydraulic power supply pipeline 18, a water pressure meter 19 and a high-rise water user.
Detailed Description
The following further description is made in conjunction with the accompanying drawings and the specific embodiments.
Example 1
Referring to fig. 2, the cooperative system of wind power generation, pumped storage power generation and hydraulic supply comprises a wind power generation system, a pumped storage power generation system, a hydraulic supply system and a coordination control processor 2;
the wind power generation system comprises an electric energy output end for outputting electric energy to a public power grid; the pumped storage power generation system comprises a pumped storage water pump 7; the hydraulic supply system comprises a water tower tank 16 and a tank water pump 12 for pumping water to the water tower tank;
a power supply circuit is respectively arranged between the electric energy output end of the wind power generation system and the power supply input ends of the pumped storage water pump and the water tower water pump;
the coordination control processor obtains external wind power demand information and generated energy information of the wind power generation system, calculates generated energy surplus of the wind power generation system according to the obtained information, controls the on-off of each power supply circuit and the operation of the water pumping and energy storage water pump and the water tank water pump according to the generated energy surplus, enables the surplus generated energy of the wind power generation system to provide a working power supply for the water tank water pump or the water pumping and energy storage water pump, and enables the utilization priority of the surplus generated energy of the water tank water pump to be larger than that of the water pumping and energy storage water pump.
The calculation and the acquisition of the generated energy information of the wind power system and the calculation of the residual generated energy adopt the prior art. The coordination control processor controls the on-off of each power supply circuit and each electric energy output circuit through a relay, and the coordination control processor is the prior art. The coordination control processor can adopt an industrial personal computer.
A power supply circuit is arranged between the power supply output end of the pumped storage power generation system and the power supply input end of the water tower pump; the power supply circuit is controlled to be switched on and off by the coordination control processor. The electric energy generated by the pumped storage power generation system can provide electric energy for the water supply of the water tower water tank during the peak of electricity and water consumption, and the water supply of high-rise users is guaranteed.
The power output end of the pumped storage power generation system also comprises an electric energy output circuit used for outputting electric energy to a public power grid; and the coordination control processor controls the on-off of the electric energy output circuit according to the surplus generated energy. Namely, when the external wind power demand is larger than the generated energy which can be provided by the wind power generation system, the generated energy of the pumped storage power generation system is used for making up the external wind power demand.
A water level sensor is arranged in the water tower water tank, and detects a water level signal in the water tower water tank and transmits the water level signal to the coordination control processor; and the coordination control processor controls the residual generated energy of the wind power generation system to provide a working power supply for the water tank water pump or provide a working power supply for the pumped storage water pump by controlling the on-off of the corresponding power supply circuit according to the received water level signal. When the water level in the water tank of the water tower is crossed to the bottom and the generated energy of the wind power generation system is remained, the wind power remained electric quantity is preferentially utilized to transmit electric energy to the water conservancy supply system so as to fill water into the water tank of the water tower.
The hydraulic power supply system also comprises a hydraulic power supply pipeline for communicating the water tank of the water tower with high-rise users, a water pressure sensor is arranged on the hydraulic power supply pipeline, and the signal output end of the water pressure sensor is connected with the coordination control processor.
In the hydraulic power supply system, the water tank water pump also comprises an external power supply circuit, and the coordination control processor controls the conduction of the external power supply circuit and the operation of the water tank water pump according to the water pressure data detected by the water pressure sensor so as to provide a working power supply for the water tank water pump through the external power supply. The external power supply can be a power supply connected to a public power grid or the generated energy of an energy storage module or a pumped storage power generation system.
The hydraulic power supply system also comprises a reservoir and a water pumping pipe communicated with an external water supply pipe, and the water tank pump is arranged on the water pumping pipe; the water pumping pipes on two sides of the water pump of the water tank are respectively provided with a pressure controller and a pressure gauge; the control end of the pressure controller and the signal output end of the pressure gauge are respectively connected with the coordination control processor. The pressure controller can adopt a pressure control valve, and the combined arrangement of the pressure controller and a pressure gauge can be used for controlling and feeding back the water pressure in the water pumping pipeline, so that the safety of the water pumping process is guaranteed while the water pressure is guaranteed.
Example 2
Referring to fig. 1, a method for coordinating a wind power generation system with a pumped storage power generation system and a hydraulic power supply system according to embodiment 1 includes:
s1, obtaining external wind power demand information;
s2, acquiring the generating capacity information of the wind power generation system;
s3, detecting water level information in a water tower tank and water pressure information on a hydraulic supply pipeline;
s4, calculating the surplus of the generated energy of the wind power generation system, wherein the surplus of the generated energy = the generated energy-external wind power demand;
and S5, controlling the power output direction of the wind power generation system according to the surplus generated power:
if the residual generated energy is less than or equal to 0, controlling the wind power generation system to only transmit the generated energy to the public power grid;
if the residual power generation is larger than 0, the step is switched to S6;
s6, judging whether the water tower water tank is full according to the water level information of the water tower water tank: if so, controlling the residual generated energy of the wind power generation system to provide a working power supply for the pumped storage water pump, and turning to S5 after a set time interval; if the water tank is not full, controlling the residual generated energy of the wind power generation system to provide a working power supply for the water tank water pump, and then turning to S7;
and S7, controlling the operation of the water pump of the water tank according to the water pressure information on the hydraulic power supply pipeline: if the water pressure meets the set water pressure, the step is switched to S6, otherwise, other external power supplies are connected to provide working power for the water tank pump to assist in pumping water, and the step S7 is repeated until the water pressure meets the set water pressure, and the step is switched to S6.
Further, in S5, if the remaining power generation amount of the wind power generation system is less than 0, the pumped storage power generation system is controlled to transmit the generated power to the utility grid. Namely, the priority for guaranteeing the power supply of the user is higher than the priority for guaranteeing the water supply of the user.
By utilizing the method, the electric energy generated by the wind power generation system can be firstly used for guaranteeing the electricity consumption of users and then used for guaranteeing the water supply of the users, and when the electricity consumption and the water pressure are lower, the electric energy generated by the wind power generation system can be used for the pumped storage of the pumped storage power generation system, so that when the electricity consumption or the water pressure is higher, the electric energy generated by the pumped storage power generation system is utilized to make up for the power vacancy.
Example 3
When the system and the method of the invention are applied, when the demand of the electricity and the water for the user is lower at night, the coordination control processor 2 calculates and obtains the surplus of the generated energy of the wind power system, detecting whether the water in the water tower tank 16 is full, if not, starting to store water, sending water pumping information by the coordination control processor through the water tank pump control line 9, pumping water from the water supply pipe 11 by the water tank pump 12, sending the water to the water tower top water tank 16 through the water storage tank 14 and the water tank inlet pipe 15, the pressure controller 10 is used for controlling the pressure of water flow, the water pressure gauge 13 is used for detecting water pressure, the pressure controller 10 and the water pressure gauge 13 are matched for use, so that a water pipe can be prevented from being damaged, water in the water tower tank 16 is supplied to a high-rise water user 19 through a high-rise user water supply pipeline 17 and the water pressure gauge 18, and the water pressure gauge 18 is used for detecting whether the water pressure of the high-rise user 19 meets the water use requirement or not; if the water tower water tank is full, performing pumped storage operation: the coordination control processor 2 sends pumping information to a pumped storage water pump 7 through a pumped storage water pump control line 5, and water in a lower reservoir 8 is pumped to an upper reservoir 3 through a water inlet pipe 6 and a water outlet pipe 4 for energy storage. When the user uses electricity and water in the peak time period in the daytime, the wind driven generator 1 preferentially supplies power to the user, and if the water pressure gauge 18 of a high-rise user detects that the water pressure is insufficient, the wind power, the pumped storage power generation or other external power sources are used for assisting the water pump of the water tower to pump water.
In the invention, the source priority of the power supply is as follows: the fan power supply, the pumped storage system power supply and the external power supply are connected in series; the supply priority of the wind power supply is as follows: and the energy is stored by pumping water in a water tower tank.
The system of the invention can be composed of a plurality of wind power generators, a building water supply tower, a small-sized pumped storage power station and an industrial personal computer.
In the daytime electricity utilization peak time period, the wind power generation preferentially meets the power demand of users; during the night electricity utilization trough time period, wind power resources increase on the contrary in daytime, and wind power has the surplus on the basis of satisfying user's power utilization demand. In order to avoid abandoning a large amount of wind and improve the utilization rate of wind power, the water pump of the water supply tower powered by the residual wind power can be used, so that the water pump stores water in advance, and the water pressure insufficiency of users of high-rise buildings in the peak period of water consumption is avoided. When the water tower reservoir is full, the fan continues to work for the pumped storage power station, the pumped storage power station pumps water to the reservoir, and when the power is insufficient, the pumped storage power station participates in power supply.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A cooperative operation system of wind power generation, pumped storage power generation and hydraulic power supply is characterized by comprising a wind power generation system, a pumped storage power generation system, a hydraulic power supply system and a coordination control processor;
the wind power generation system comprises an electric energy output end for outputting electric energy to a public power grid; the pumped storage power generation system comprises a pumped storage water pump; the hydraulic power supply system comprises a water tower water tank and a water tank water pump for pumping water to the water tower water tank; a power supply circuit is arranged between the power supply output end of the pumped storage power generation system and the power supply input end of the water tower pump; the power supply circuit is controlled to be switched on and off by the coordination control processor;
a power supply circuit is respectively arranged between the electric energy output end of the wind power generation system and the power supply input ends of the pumped storage water pump and the water tower water pump;
the coordination control processor acquires external wind power demand information and generated energy information of the wind power generation system, calculates generated energy surplus of the wind power generation system according to the acquired information, controls the on-off of each power supply circuit and the operation of the water pumping and energy storage water pump and the water tank water pump according to the generated energy surplus, enables the surplus generated energy of the wind power generation system to provide a working power supply for the water tank water pump or the water pumping and energy storage water pump, and enables the utilization priority of the surplus generated energy of the water tank water pump to be larger than that of the water pumping and energy storage water pump;
a water level sensor is arranged in the water tower water tank, and detects a water level signal in the water tower water tank and transmits the water level signal to the coordination control processor; the coordination control processor controls the residual generated energy of the wind power generation system to provide a working power supply for the water tank water pump or provide a working power supply for the pumped storage water pump by controlling the on-off of the corresponding power supply circuit according to the received water level signal;
the hydraulic power supply system also comprises a hydraulic power supply pipeline for communicating the water tank of the water tower with high-rise users, a water pressure sensor is arranged on the hydraulic power supply pipeline, and the signal output end of the water pressure sensor is connected with the coordination control processor.
2. The cooperative system for wind power generation and pumped storage power generation and hydropower supply of claim 1, wherein the power output end of the pumped storage power generation system further comprises an electric power output circuit for outputting electric power to a public power grid; and the coordination control processor controls the on-off of the electric energy output circuit according to the surplus generated energy.
3. The cooperative system for wind power generation, pumped storage power generation and water power supply as claimed in claim 1, wherein the water tank pump further comprises an external power supply circuit, and the cooperative control processor controls the external power supply circuit and the water tank pump to be turned on according to the water pressure data detected by the water pressure sensor, so as to provide the external power supply to the water tank pump.
4. The cooperative system for wind power generation, pumped storage power generation and hydro power supply as claimed in claim 1, wherein the hydro power supply system further comprises a reservoir and a pumping pipe connected to an external water supply pipe, and the water tank pump is disposed on the pumping pipe; the water pumping pipes on two sides of the water pump of the water tank are respectively provided with a pressure controller and a pressure gauge; the control end of the pressure controller and the signal output end of the pressure gauge are respectively connected with the coordination control processor.
5. A method for cooperative operation of the cooperative operation system of wind power generation, pumped storage power generation and hydraulic supply according to any one of claims 1 to 4, comprising:
s1, obtaining external wind power demand information;
s2, acquiring the generating capacity information of the wind power generation system;
s3, detecting water level information in a water tower tank and water pressure information on a hydraulic supply pipeline;
s4, calculating the surplus of the generated energy of the wind power generation system, wherein the surplus of the generated energy = the generated energy-external wind power demand;
and S5, controlling the power output direction of the wind power generation system according to the surplus generated power:
if the residual generated energy is less than or equal to 0, controlling the wind power generation system to only transmit the generated energy to the public power grid;
if the residual power generation is larger than 0, the step is switched to S6;
s6, judging whether the water tower water tank is full according to the water level information of the water tower water tank: if so, controlling the residual generated energy of the wind power generation system to provide a working power supply for the pumped storage water pump, and turning to S5 after a set time interval; if the water tank is not full, controlling the residual generated energy of the wind power generation system to provide a working power supply for the water tank water pump, and then turning to S7;
and S7, controlling the operation of the water pump of the water tank according to the water pressure information on the hydraulic power supply pipeline: if the water pressure meets the set water pressure, the step is switched to S6, otherwise, other external power supplies are connected to provide working power for the water tank pump to assist in pumping water, and the step S7 is repeated until the water pressure meets the set water pressure, and the step is switched to S6.
6. The method as claimed in claim 5, wherein in S5, if the remaining power of the wind power generation system is less than 0, the pumped-hydro energy storage power generation system is controlled to transmit the generated power to the public power grid.
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