CN110134996B - Dynamic adjusting method and device for variable-speed pumped storage unit and storage medium - Google Patents
Dynamic adjusting method and device for variable-speed pumped storage unit and storage medium Download PDFInfo
- Publication number
- CN110134996B CN110134996B CN201910289361.5A CN201910289361A CN110134996B CN 110134996 B CN110134996 B CN 110134996B CN 201910289361 A CN201910289361 A CN 201910289361A CN 110134996 B CN110134996 B CN 110134996B
- Authority
- CN
- China
- Prior art keywords
- unit
- rotating speed
- target
- power
- speed
- Prior art date
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 238000004590 computer program Methods 0.000 claims description 22
- 229910052739 hydrogen Inorganic materials 0.000 claims 2
- 239000001257 hydrogen Substances 0.000 claims 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 2
- 238000005086 pumping Methods 0.000 description 24
- 230000006870 function Effects 0.000 description 8
- 238000004146 energy storage Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Water Turbines (AREA)
Abstract
The invention discloses a dynamic adjusting method of a variable-speed pumped storage unit, which relates to the field of control of the variable-speed pumped storage unit, and comprises the following steps: acquiring a characteristic curve of a water pump turbine; the characteristic curve is a characteristic curve of unit rotating speed-unit moment of the pump turbine; calculating the relation between the unit power and the unit rotating speed according to the characteristic curve; obtaining a conversion relation between the target unit power and the target unit rotating speed based on the relation; determining a target rotating speed value corresponding to the target power value according to the conversion relation and the target power value; the power target value is obtained according to measurement of the wind power fluctuation signal; and adjusting the rotating speed of the variable-speed pumped storage unit according to the target rotating speed value. The embodiment of the invention also provides a dynamic adjusting device and a storage medium of the variable-speed pumped storage unit, which can effectively reduce the influence of wind power fluctuation on a system and can effectively reduce the frequency deviation of the wind power fluctuation on the system.
Description
Technical Field
The invention relates to the field of control of variable-speed pumped storage units, in particular to a dynamic adjusting method and device of a variable-speed pumped storage unit and a storage medium.
Background
The dynamic regulation effect of the large-scale wind power grid-connected water pumping energy storage unit is obvious. The variable-speed pumped storage unit adopts a pump turbine runner which is not different from a conventional reversible pump turbine runner, a generator motor adopts a double-fed control technology, and the electromagnetic power of a motor is decoupled from the mechanical power of the pump turbine, so that the variable-speed operation of the unit is realized. According to the operating characteristics of the reversible pump turbine in the water pump area, the change of the rotating speed of the set can cause the change of the pumping power of the set, so that the set can obtain the power regulation capability under the pumping working condition.
In the implementation process, the inventor finds that the power of a conventional reversible unit cannot be adjusted under the water pumping working condition due to the inherent operating characteristics of a pump turbine, and the frequency adjusting capability of a system is limited, so that the system is greatly influenced by wind power fluctuation.
Disclosure of Invention
The embodiment of the invention provides a dynamic adjusting method and device for a variable-speed pumped storage unit and a storage medium, which can effectively reduce the influence of wind power fluctuation on a system and can effectively reduce the frequency deviation of the wind power fluctuation on the system.
The embodiment of the invention provides a dynamic adjusting method of a variable-speed pumped storage unit, which comprises the following steps:
acquiring a characteristic curve of a pump turbine; the characteristic curve is a unit rotating speed-unit moment characteristic curve of the pump turbine;
calculating the relation between the unit power and the unit rotating speed of the pump turbine according to the characteristic curve;
obtaining a conversion relation between the target unit power and the target unit rotating speed based on the relation between the unit power and the unit rotating speed;
determining a rotating speed target value corresponding to the power target value according to the conversion relation and the power target value; the power target value is obtained according to measurement of the wind power fluctuation signal;
and adjusting the rotating speed of the variable-speed pumped storage unit according to the target rotating speed value.
As an improvement of the above scheme, the unit power, the unit and the unit torque rotating speed satisfy the relation:
P 11 ＝N 11 ·M 11
wherein, P 11 Is the unit power; n is a radical of 11 Is the unit rotational speed; m 11 Is the unit moment; n is the rotating speed of the unit; m is t The mechanical moment of the unit; h is the water pressure of the water inlet; p is the pumping power; d ref Is the diameter of the runner.
As an improvement of the above aspect, the obtaining of the conversion relationship between the target unit power and the target unit rotation speed based on the relationship between the unit power and the unit rotation speed includes:
acquiring a relation curve of the unit power and the unit rotating speed according to the unit power and the unit rotating speed;
and obtaining a relation curve of the target unit power and the target unit rotating speed as a conversion relation between the target unit power and the target unit rotating speed based on the relation curve of the unit power and the unit rotating speed.
As an improvement of the above, the power target value and the rotation speed target value satisfy the relationship:
wherein, P * Is the power target value; n is * Is the target value of the rotating speed;
is the target unit power;
is the target unit rotation speed; h is the water pressure of the water inlet; p is the pumping power; d ref Is the diameter of the runner。
As an improvement of the above scheme, the adjusting the rotation speed of the variable speed pumped storage unit according to the target rotation speed value includes:
according to the target rotating speed value, determining a difference value between the current rotating speed value and the target rotating speed value of the variable-speed pumped storage unit to obtain a corresponding deviation signal;
and adjusting the electromagnetic torque of a double-fed motor of the variable-speed pumped storage unit through PI according to the deviation signal.
The embodiment of the invention also provides a dynamic adjusting device of the variable-speed pumped storage unit, which comprises:
the data acquisition module is used for acquiring a characteristic curve of the water pump turbine; the characteristic curve is a characteristic curve of unit rotating speed-unit moment of the pump turbine;
the first operation module is used for calculating the relation between the unit power and the unit rotating speed of the pump turbine according to the characteristic curve;
the second operation module is used for obtaining a conversion relation between the target unit power and the target unit rotating speed based on the relation between the unit power and the unit rotating speed;
the third operation module is used for determining a rotating speed target value corresponding to the power target value according to the conversion relation and the power target value;
and the control module is used for adjusting the rotating speed of the variable-speed pumped storage unit according to the target rotating speed value.
The embodiment of the invention also provides a dynamic adjustment device for the variable-speed pumped-storage unit, which comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the dynamic adjustment method as described in any one of the above items when executing the computer program.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, and when the computer program runs, a device on which the computer-readable storage medium is located is controlled to execute the dynamic adjustment method described above.
Compared with the prior art, the dynamic adjustment method, the dynamic adjustment device and the storage medium for the variable-speed pumped storage unit provided by the embodiment of the invention have the advantages that the conversion relation between the target unit power and the target unit rotating speed is obtained through the relation between the unit power and the unit rotating speed of the pump turbine, so that the corresponding target rotating speed value is determined according to the conversion relation and the target power value, and the rotating speed of the variable-speed pumped storage unit is adjusted. Because the rotating speed of the variable speed unit is dynamically adjusted in real time, the pumping power of the unit is changed, the wind power fluctuation of a matching system is realized, the wind power fluctuation is stabilized under the pumping working condition, the problem that the pumping energy storage cannot adjust the wind power fluctuation under the pumping working condition is solved, the influence of the wind power fluctuation on the system is reduced, and the frequency deviation of the wind power fluctuation on the system can be effectively reduced.
Drawings
Fig. 1 is a schematic flow chart of a dynamic adjustment method for a variable speed pumped-storage group according to embodiment 1 of the present invention.
Fig. 2 is a preferred flow chart of step S150 of the dynamic adjustment method shown in fig. 1.
Fig. 3 is a preferred control block diagram of the dynamic adjustment method shown in fig. 1.
Fig. 4 is a flowchart illustrating step S130 of a dynamic adjustment method for a variable speed pumped-storage group according to embodiment 3 of the present invention.
Fig. 5 is a schematic structural diagram of a dynamic adjustment device of a variable-speed pumped-storage unit according to embodiment 4 of the present invention.
Fig. 6 is a schematic structural diagram of a dynamic adjustment device of a variable-speed pumped-storage unit according to embodiment 5 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment 1 of the invention provides a dynamic adjusting method of a variable-speed pumped storage unit. Referring to fig. 1, the dynamic adjustment method includes steps S110 to S150.
S110, acquiring a characteristic curve of the water pump turbine; the characteristic curve is a characteristic curve of unit rotating speed-unit moment of the pump turbine.
The characteristic curve may be a characteristic curve of unit rotating speed-unit torque obtained by measuring and calculating relevant parameters of the pump turbine in advance. Or directly acquiring related parameters of the pump turbine so as to obtain the characteristic curve. For example, a pump turbine manufacturer often provides the characteristic curve of a corresponding model of pump turbine. It should be understood that the above way of obtaining the characteristic curve of the pump turbine is only an example, and does not limit the present solution.
And S120, calculating the relation between the unit power and the unit rotating speed of the pump turbine according to the characteristic curve.
For example, the characteristic curve may be processed to obtain a unit power-unit rotation speed relationship curve of the pump turbine, and the unit power-unit rotation speed relationship curve may represent a relationship between the unit power and the unit rotation speed. It is understood that the relationship between the unit power and the unit rotation speed can also be embodied in the form of a relationship function between the unit power and the unit rotation speed, without affecting the beneficial effects obtainable by the present invention.
And S130, obtaining a conversion relation between the target unit power and the target unit rotating speed based on the relation between the unit power and the unit rotating speed.
The relationship between the unit power and the unit rotation speed can be determined based on the obtained unit power and the obtained unit rotation speed, and the conversion relationship between the target unit power and the target unit rotation speed can be further obtained based on the relationship.
For example, a relationship curve obtained by fitting the unit power and the unit rotational speed may be used as the relationship curve of the conversion relationship. The method can also be used for obtaining a plurality of groups of unit power and unit data under the condition that the guide vane opening degrees of the water pump turbine are different, so that a plurality of relation curves corresponding to different guide vane opening degrees are obtained, and the relation curves are fitted, so that the relation curve of the conversion relation is obtained, and the beneficial effects obtained by the method are not influenced.
S140, determining a rotating speed target value corresponding to the power target value according to the conversion relation and the power target value; and obtaining the power target value according to the measurement of the wind power fluctuation signal.
And obtaining the power target value according to the measurement of the wind power fluctuation signal. And taking the power target value as the input of the conversion relation to obtain a rotating speed target value corresponding to the power target value.
And S150, adjusting the rotating speed of the variable-speed pumped storage unit according to the target rotating speed value.
The adjustment of the rotating speed may be to compare the current rotating speed value of the rotating speed of the variable-speed pumped storage unit with the target rotating speed value, so as to obtain an adjustment strategy of the rotating speed of the variable-speed pumped storage unit.
Preferably, referring to fig. 2, step S150 may include steps S151 to S152.
And S151, determining the difference value between the current rotating speed value and the target rotating speed value of the variable-speed pumped storage unit according to the target rotating speed value to obtain a corresponding deviation signal.
And S152, adjusting the electromagnetic torque of a double-fed motor of the variable-speed pumped storage unit through PI according to the deviation signal.
And a negative feedback closed loop is formed by the rotating speed feedback of the water pump turbine, so that the rotating speed of the unit follows the target rotating speed value.
Further, the dynamicsThe control block diagram of the regulation method can also be seen in fig. 3. According to the conversion relation f 1 ＝(P * ,n * ) And a power target value P * Obtaining a corresponding target value n of the rotating speed * . According to the deviation signal (n) * -n) for PI regulation
Adjusting the work of the double-fed unit to obtain the electromagnetic moment m of the double-fed unit e And thus on the current value n of the rotational speed. The current value n of the rotating speed is compared with the feedback value m of the electromagnetic moment g The relation between f 2 ＝(m g N) feeding back to the adjustment of the pump turbine; the current value n of the rotation speed is also fed back to the deviation signal (n) * -n) to act on the doubly-fed machine to form a negative feedback closed loop.
In the dynamic adjustment method for the variable-speed pumped storage unit provided in embodiment 1 of the present invention, a conversion relationship between a target unit power and a target unit rotation speed is obtained through a relationship between a unit power and a unit rotation speed of a pump turbine, so as to determine a corresponding target rotation speed value according to the conversion relationship and the target power value and adjust the rotation speed of the variable-speed pumped storage unit. The rotating speed of the variable speed unit is dynamically adjusted in real time, so that the pumping power of the unit is changed, the wind power fluctuation of a system is matched, the wind power fluctuation is stabilized under the pumping working condition, the problem that the pumping energy storage cannot adjust the wind power fluctuation under the pumping working condition is solved, the influence of the wind power fluctuation on the system is reduced, and the frequency deviation of the wind power fluctuation on the system can be effectively reduced.
The embodiment 2 of the invention provides another dynamic adjusting method of a variable-speed pumped storage unit. The dynamic adjustment method is based on embodiment 1, and improves step S120, and according to the relationship between the unit rotation speed and the unit torque related to the characteristic curve, the unit power can be defined to satisfy the relationship:
P 11 ＝N 11 ·M 11
wherein, P 11 Is the sheetBit power; n is a radical of 11 Is the unit rotational speed; m 11 Is the unit moment.
And has a unit rotation speed N 11 And unit moment M 11 The following relation is satisfied:
wherein n is the rotating speed of the unit; h is the water pressure of the water inlet; p is the pumping power; d ref Is the diameter of the runner.
It follows that the unit power and the unit rotational speed satisfy the relationship:
therefore, the unit power and the unit rotating speed are obtained according to the working parameters, and a relation curve of the unit power and the unit rotating speed can be further obtained.
The embodiment 3 of the invention also provides another dynamic adjustment method of the variable-speed pumped storage unit. Referring to fig. 4, the dynamic adjustment method is based on embodiment 1, and step S130 is modified, and step S130 may further include steps S331 to S332.
And S331, acquiring a relation curve of the unit power and the unit rotating speed according to the unit power and the unit rotating speed.
And S332, obtaining a relation curve of the target unit power and the target unit rotating speed based on the relation curve of the unit power and the unit rotating speed, wherein the relation curve is used as a conversion relation between the target unit power and the target unit rotating speed.
Specifically, the power target value and the rotation speed target value satisfy the relationship:
wherein, P * Is the power target value; n is * The target rotating speed value is obtained;
is the target unit power;
is the target unit rotation speed; h is the water pressure of the water inlet; p is the pumping power; d ref Is the diameter of the runner.
It will be appreciated that example 3 can be combined with example 2 to provide a more preferred embodiment of the invention.
The embodiment 4 of the invention also provides a dynamic adjusting device of the variable-speed pumped storage unit. Referring to fig. 5, the dynamic adjustment apparatus 400 includes a data acquisition module 410, a first operation module 420, a second operation module 430, a third operation module 440, and a control module 450.
The data acquisition module 410 is used for acquiring a characteristic curve of the pump turbine; the characteristic curve is a characteristic curve of unit rotating speed-unit moment of the pump turbine.
The first operation module 420 is configured to calculate a relationship between a unit power and a unit rotation speed of the pump turbine according to the characteristic curve.
The second operation module 430 is configured to obtain a conversion relationship between the target unit power and the target unit rotation speed based on the relationship between the unit power and the unit rotation speed.
The third operation module 440 is configured to determine a target rotation speed value corresponding to the target power value according to the conversion relationship and the target power value.
The control module 450 is configured to adjust the rotation speed of the variable speed pumped storage unit according to the target rotation speed value.
The dynamic adjustment apparatus 400 operates according to the dynamic adjustment method provided in any of the above embodiments, and is not described herein again.
According to the dynamic adjusting device for the variable-speed pumped storage unit, provided by the embodiment 4 of the invention, the conversion relation between the target unit power and the target unit rotating speed is obtained through the relation between the unit power and the unit rotating speed of the pump turbine, so that the corresponding target rotating speed value is determined according to the conversion relation and the target power value, and the rotating speed of the variable-speed pumped storage unit is adjusted. Because the rotating speed of the variable speed unit is dynamically adjusted in real time, the pumping power of the unit is changed, the wind power fluctuation of a matching system is realized, the wind power fluctuation is stabilized under the pumping working condition, the problem that the pumping energy storage cannot adjust the wind power fluctuation under the pumping working condition is solved, the influence of the wind power fluctuation on the system is reduced, and the frequency deviation of the wind power fluctuation on the system can be effectively reduced.
Embodiment 5 of the present invention provides another dynamic adjustment apparatus 50 for a variable speed pumped-hydro energy storage unit. Referring to fig. 6, a dynamic adjustment device 50 according to embodiment 5 of the present invention includes: a processor 51, a memory 52 and a computer program, such as a dynamic adjustment program, stored in said memory and executable on said processor. The processor 51, when executing the computer program, implements the steps in the above-described embodiments of the testing method, such as step S130 shown in fig. 1. Alternatively, the processor implements the functions of the modules in the embodiments of the apparatuses described above when executing the computer program, for example, the dynamic adjustment apparatus described in the embodiments above.
Illustratively, the computer program may be divided into one or more modules, which are stored in the memory 52 and executed by the processor 51 to accomplish the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program in the dynamic adjustment apparatus 50. For example, the computer program may be divided into a data acquisition module, a first operation module, a second operation module, a third operation module and a control module, and the specific functions of the modules are as follows: the data acquisition module is used for acquiring a characteristic curve of the water pump turbine; the characteristic curve is a characteristic curve of unit rotating speed-unit moment of the pump turbine; the first operation module is used for calculating the relation between the unit power and the unit rotating speed of the pump turbine according to the characteristic curve; the second operation module is used for obtaining a conversion relation between the target unit power and the target unit rotating speed based on the relation between the unit power and the unit rotating speed; the third operation module is used for determining a rotating speed target value corresponding to the power target value according to the conversion relation and the power target value; and the control module is used for adjusting the rotating speed of the variable-speed pumped storage unit according to the target rotating speed value.
The dynamic adjustment device 50 may be a computing device such as a desktop computer, a notebook, a palm computer, and a cloud server. The dynamic adjustment device 50 may include, but is not limited to, a processor 51 and a memory 52. It will be understood by those skilled in the art that the schematic diagram is merely an example of the image enhancement device, and does not constitute a limitation to the dynamic adjustment apparatus 50, and may include more or less components than those shown, or combine some components, or different components, for example, the dynamic adjustment apparatus 50 may further include an input-output device, a network access device, a bus, and the like.
The Processor 51 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 51 is a control center of the dynamic adjustment device 50 and connects various parts of the entire dynamic adjustment device 50 by various interfaces and lines.
The memory 52 can be used for storing the computer programs and/or modules, and the processor 51 implements various functions of the dynamic adjustment apparatus 50 by running or executing the computer programs and/or modules stored in the memory 52 and calling data stored in the memory 52. The memory 52 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 52 may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein, the module integrated by the dynamic adjustment device 50 can be stored in a computer readable storage medium if it is implemented in the form of software functional unit and sold or used as a stand-alone product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments described above may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U.S. disk, removable hard disk, magnetic diskette, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signal, telecommunications signal, and software distribution medium, etc.
In the dynamic adjustment device and the storage medium for the variable-speed pumped storage unit provided in embodiment 5 of the present invention, a conversion relationship between a target unit power and a target unit rotation speed is obtained through a relationship between a unit power and a unit rotation speed of a pump turbine, so as to determine a corresponding target rotation speed value and adjust the rotation speed of the variable-speed pumped storage unit according to the conversion relationship and the target power value. The rotating speed of the variable speed unit is dynamically adjusted in real time, so that the pumping power of the unit is changed, the wind power fluctuation of a system is matched, the wind power fluctuation is stabilized under the pumping working condition, the problem that the pumping energy storage cannot adjust the wind power fluctuation under the pumping working condition is solved, the influence of the wind power fluctuation on the system is reduced, and the frequency deviation of the wind power fluctuation on the system can be effectively reduced.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection therebetween, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (7)
1. A dynamic adjustment method of a variable speed pumped storage unit is characterized by comprising the following steps:
acquiring a characteristic curve of a water pump turbine; the characteristic curve is a characteristic curve of unit rotating speed-unit moment of the pump turbine;
calculating the relation between the unit power and the unit rotating speed of the pump turbine according to the characteristic curve;
obtaining a conversion relation between the target unit power and the target unit rotating speed based on the relation between the unit power and the unit rotating speed;
determining a rotating speed target value corresponding to the power target value according to the conversion relation and the power target value; the power target value is obtained according to measurement of the wind power fluctuation signal;
adjusting the rotating speed of the variable-speed pumped storage unit according to the target rotating speed value;
the unit power, the unit rotation speed and the unit torque satisfy the relationship:
P 11 ＝N 11 ·M 11
wherein, P 11 Is the unit power; n is a radical of hydrogen 11 Is the unit rotational speed; m 11 Is the unit moment; n is the rotating speed of the unit; m is t The mechanical moment of the unit; h is water pressure of a water inlet; d ref Is the diameter of the runner.
2. The dynamic adjustment method according to claim 1, wherein said obtaining a conversion relation between a target unit power and a target unit rotation speed based on the relation between the unit power and the unit rotation speed comprises the steps of:
acquiring a relation curve of the unit power and the unit rotating speed according to the unit power and the unit rotating speed;
and obtaining a relation curve of the target unit power and the target unit rotating speed as a conversion relation between the target unit power and the target unit rotating speed based on the relation curve of the unit power and the unit rotating speed.
3. The dynamic adjustment method according to claim 2, characterized in that the power target value and the rotational speed target value satisfy the relationship:
wherein, P * Is the power target value; n is * The target rotating speed value is obtained;
is the target unit power;
is the target unit rotation speed; h is the water pressure of the water inlet; d ref Is the diameter of the runner.
4. The dynamic adjustment method of claim 1, wherein the adjusting the speed of the variable speed pumped-storage group based on the speed target value comprises the steps of:
determining the difference value between the current rotating speed value and the target rotating speed value of the variable-speed pumped storage unit according to the target rotating speed value to obtain a corresponding deviation signal;
and adjusting the electromagnetic torque of a double-fed motor of the variable-speed pumped storage unit through PI according to the deviation signal.
5. A dynamic adjustment device of a variable speed pumped storage unit, comprising:
the data acquisition module is used for acquiring a characteristic curve of the water pump turbine; the characteristic curve is a unit rotating speed-unit moment characteristic curve of the pump turbine;
the first operation module is used for calculating the relation between the unit power and the unit rotating speed of the pump turbine according to the characteristic curve;
the second operation module is used for obtaining a conversion relation between the target unit power and the target unit rotating speed based on the relation between the unit power and the unit rotating speed;
the third operation module is used for determining a rotating speed target value corresponding to the power target value according to the conversion relation and the power target value;
the control module is used for adjusting the rotating speed of the variable-speed pumped storage unit according to the target rotating speed value;
the unit power, the unit rotation speed and the unit torque satisfy the relationship:
P 11 ＝N 11 ·M 11
wherein, P 11 Is the unit power; n is a radical of hydrogen 11 Is the unit rotational speed; m is a group of 11 Is the unit moment; n is the unit rotation speed; m is t Mechanical forces of unitsMoment; h is water pressure of a water inlet; d ref Is the diameter of the runner.
6. A dynamic adjustment apparatus for a variable speed pumped-storage group, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the dynamic adjustment method of any one of claims 1 to 4 when executing the computer program.
7. A computer-readable storage medium, comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the dynamic adjustment method of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289361.5A CN110134996B (en) | 2019-04-11 | 2019-04-11 | Dynamic adjusting method and device for variable-speed pumped storage unit and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289361.5A CN110134996B (en) | 2019-04-11 | 2019-04-11 | Dynamic adjusting method and device for variable-speed pumped storage unit and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110134996A CN110134996A (en) | 2019-08-16 |
| CN110134996B true CN110134996B (en) | 2023-03-07 |
Family
ID=67569673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910289361.5A Active CN110134996B (en) | 2019-04-11 | 2019-04-11 | Dynamic adjusting method and device for variable-speed pumped storage unit and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110134996B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410131B (en) * | 2011-11-04 | 2013-12-25 | 上海瑞华(集团)有限公司 | Multivariable adjustable hydraulic power generating device and control method thereof |
| CN102496967B (en) * | 2011-11-30 | 2013-11-20 | 山东理工大学 | Wind-power trend optimizing system based on fast energy storage and control method thereof |
| CN106485064B (en) * | 2016-09-28 | 2017-09-12 | 华中科技大学 | A kind of intelligent starting-up method of pump-storage generator hydraulic turbine condition |
| CN109308005B (en) * | 2018-09-10 | 2022-01-28 | 东方电气自动控制工程有限公司 | Variable-rotation-speed pumped storage unit coordination control method based on working condition optimization |
| CN109308390B (en) * | 2018-09-20 | 2022-12-02 | 国网湖南省电力有限公司 | Combined regulation simulation system and method for wind/light energy and hydroelectric generating set of power grid at transmitting and receiving ends |
-
2019
- 2019-04-11 CN CN201910289361.5A patent/CN110134996B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110134996A (en) | 2019-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113394809B (en) | Flexible direct current island control method, device and medium based on power grid structure type | |
| CN112671232B (en) | LLC resonant circuit control method and device and terminal equipment | |
| CN109245639B (en) | Frequency modulation method, device, equipment and medium for wind turbine generator | |
| CN111952985B (en) | Reactive power coordination control method, system and equipment for offshore wind farm | |
| CN113883008A (en) | Fuzzy self-adaptive variable-pitch control method for fan capable of inhibiting multiple disturbance factors | |
| CN110529335B (en) | Control method for inhibiting overspeed of fan and wind generating set | |
| US20200244072A1 (en) | Method and device for distributing active power for wind farm | |
| CN110134996B (en) | Dynamic adjusting method and device for variable-speed pumped storage unit and storage medium | |
| CN112431748B (en) | Optimal operation method and system for circulation unit circulation pump based on condenser inlet water temperature | |
| CN110311401A (en) | Wind power plant power scheduling method and device and storage medium | |
| CN110374789A (en) | PID parameter switching method and device for speed regulator of hydraulic turbine set | |
| CN113178870B (en) | Fixed value setting method, device, equipment and storage medium of power system | |
| CN111608858B (en) | Method and device for adjusting output power of wind generating set, computer readable storage medium and wind power generation system | |
| CN109185055B (en) | Method and device for quickly starting wind generating set and computer readable storage medium | |
| CN115453875B (en) | Coal quality online correction method and device for thermal power generating unit | |
| CN111564871A (en) | Self-adaptive variable load instruction generation method and device based on thermal inertia of coal-fired power station | |
| CN116760072B (en) | Frequency adjusting method, device, equipment and medium of multi-energy complementary system | |
| CN116799817A (en) | Frequency modulation method and device for fan participating in power grid | |
| CN113315121B (en) | Current reference value setting method, device and medium for power grid fault ride-through | |
| CN115288928B (en) | Maximum power point tracking control method and system for wind turbine generator | |
| CN113098047B (en) | Flexible direct-current power grid control method, device, equipment and storage medium | |
| CN115663884A (en) | Wind turbine generator grid-connected point stability control method, system, equipment and medium | |
| CN117856358A (en) | Wind turbine generator frequency adjustment and inertia control method and system based on phase-locked loop | |
| CN116378898A (en) | Pitch angle control method, device and system for wind power system and storage medium | |
| CN113809773A (en) | Power system production simulation method, device and equipment based on offshore wind turbine generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |