CN113809773A - Power system production simulation method, device and equipment based on offshore wind turbine generator - Google Patents

Power system production simulation method, device and equipment based on offshore wind turbine generator Download PDF

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Publication number
CN113809773A
CN113809773A CN202111104635.2A CN202111104635A CN113809773A CN 113809773 A CN113809773 A CN 113809773A CN 202111104635 A CN202111104635 A CN 202111104635A CN 113809773 A CN113809773 A CN 113809773A
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wind turbine
offshore wind
power generation
power system
power
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Inventor
王嘉阳
周保荣
卢斯煜
姚文峰
毛田
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CSG Electric Power Research Institute
China Southern Power Grid Co Ltd
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CSG Electric Power Research Institute
China Southern Power Grid Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/28—The renewable source being wind energy
    • 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
    • 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
    • Y02E10/76—Power conversion electric or electronic aspects

Abstract

The invention provides a method, a device and equipment for simulating the production of an electric power system based on an offshore wind turbine. By adopting the embodiment of the invention, through establishing the wind turbine generator combination model, the aim of lowest power generation cost of the power system is taken as the target, all constraint conditions and annual hour-level time sequence power generation capacity of the power system are comprehensively considered, the characteristics of randomness, volatility and intermittency of wind power are effectively considered, and annual fine simulation of the power system is realized.

Description

Power system production simulation method, device and equipment based on offshore wind turbine generator
Technical Field
The invention relates to the technical field of electric power, in particular to a method, a device and equipment for simulating the production of an electric power system based on an offshore wind turbine generator.
Background
The power system production simulation is one of basic analysis tools for power system planning and operation, and can perform simulation on the operation of a power system under a specified boundary condition to obtain key economic and technical indexes. Therefore, it is important to develop a fast, efficient, and easily implemented production simulation means for simulating the actual power system operation or evaluating the power system planning scheme.
Currently, the installed capacity of new energy generator sets represented by wind power and hydropower is increasing year by year. In a multi-energy complementary system, large-scale intermittent renewable energy sources such as wind power, hydropower and the like have the characteristics different from conventional power sources such as thermal power and the like, and the significant short-time volatility, randomness and intermittency cause the grid connection of the large-scale intermittent renewable energy sources to bring great challenges to the traditional production simulation method, so that a new method needs to be found for simulating the large-scale intermittent renewable energy sources.
Disclosure of Invention
The invention provides a method, a device and equipment for simulating the production of an electric power system based on an offshore wind turbine generator, which aim to solve the problem of insufficient consideration of simulation research on the production of the wind turbine generator in the prior art.
In order to achieve the above object, an embodiment of the present invention provides a power system production simulation method based on an offshore wind turbine, including the following steps:
acquiring an operation boundary condition of a power system, and preprocessing the operation boundary condition;
acquiring a power generation capacity value of an offshore wind turbine; wherein the value of the generating capacity represents the annual hour-level time sequence generating capacity;
establishing an offshore wind turbine generator set combination model; the offshore wind turbine generator set combination model comprises an objective function established by taking the lowest power generation cost of a power system as a target and a corresponding constraint condition;
and performing production simulation calculation on the offshore wind turbine generator set combined model according to the power generation capacity value and the preprocessed operation boundary condition to obtain a production simulation calculation result.
As an optional embodiment, the operation boundary conditions of the power system include a time sequence load curve, a system parameter, and a unit parameter.
As an optional embodiment, the obtaining method of the power generation capability value of the offshore wind turbine includes:
acquiring a power generation capacity calculation parameter of an offshore wind turbine;
and calculating the power generation capacity value of the offshore wind turbine generator according to the power generation capacity calculation parameters.
As an optional embodiment, the calculation formula of the power generation capability value of the offshore wind turbine is specifically:
Figure BDA0003271740410000021
wherein, Pwind,maxThe power generation capacity value of the offshore wind turbine generator set is calculated according to the power generation capacity calculation parameters including the installed capacity R of the offshore wind turbine generator setwindAnd the offshore wind speed analog value v in the time period ttCut-in wind velocity vinRated wind speed vratedCut-out wind speed vout。
As an optional embodiment, the power generation cost of the power system includes power generation cost of a thermal power generating unit which cannot be started or stopped within a day, power generation cost of a thermal power generating unit which can be started or stopped within a day, power generation cost of a renewable energy source unit, power generation cost of a hydroelectric generating unit, and power generation cost of a pumped storage unit.
As an optional embodiment, the expression of the objective function is specifically:
Figure BDA0003271740410000022
v, P, I respectively represents power generation cost, output and start-stop state variables, variable subscripts C, f, h, p, w and wd respectively represent a non-start-stop thermal power generating unit, a hydroelectric generating unit, a pumped storage unit, a renewable energy generating unit and cut renewable energy, variable superscripts t and t-1 represent time t and time t-1, CwTo cut off the cost of renewable energy sources, CfThe start and stop cost of the unit is saved.
As an optional embodiment, the preset constraint conditions include a power balance constraint, a power system positive and negative standby constraint, a unit output upper and lower limit constraint, a start-stop unit minimum start-up and stop time constraint, a unit climbing constraint, a hydroelectric generating set electric quantity constraint, a pumped storage unit pumped power generation balance constraint, and a variable range constraint.
Another embodiment of the present invention correspondingly provides an offshore wind turbine generator based power system production simulation apparatus, including:
the operation boundary condition processing module is used for acquiring the operation boundary conditions of the power system and preprocessing the operation boundary conditions;
the power generation capacity acquisition module is used for acquiring a power generation capacity value of the offshore wind turbine; wherein the value of the generating capacity represents the annual hour-level time sequence generating capacity;
the combined model establishing module is used for establishing an offshore wind turbine generator combined model; the offshore wind turbine generator set combination model comprises an objective function established by taking the lowest power generation cost of a power system as a target and a corresponding constraint condition;
and the production simulation calculation module is used for carrying out production simulation calculation on the offshore wind turbine generator set combined model according to the power generation capacity value and the preprocessed operation boundary condition to obtain a production simulation calculation result.
Correspondingly, another embodiment of the present invention provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and when the processor executes the computer program, the processor implements the method for simulating the power system production based on the offshore wind turbine generator set according to the embodiment of the present invention.
Compared with the prior art, the embodiment of the invention provides a method, a device and equipment for simulating the production of an electric power system based on an offshore wind turbine, which can be used for comprehensively considering all constraint conditions and the annual hour-level time sequence power generation capacity of the electric power system on the basis of keeping large-scale offshore wind power grid connection by adopting a wind turbine combination model and aiming at the lowest power generation cost of the electric power system, effectively considering the characteristics of randomness, volatility and intermittency of wind power by taking hours as time intervals, days as calculation units and years as calculation periods, solving the problem of insufficient consideration of simulation research on the production of the wind turbine in the prior art, and realizing annual fine simulation on the electric power system.
Drawings
Fig. 1 is a schematic flow chart of a method for simulating the production of an offshore wind turbine-based power system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an offshore wind turbine-based power system production simulation device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a terminal device according to an embodiment 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.
Referring to fig. 1, it is a schematic flow chart of a method for simulating power system production based on an offshore wind turbine provided in an embodiment of the present invention, where the method includes steps S11 to S14:
and S11, acquiring the operation boundary conditions of the power system, and preprocessing the operation boundary conditions.
S12, acquiring a power generation capacity value of the offshore wind turbine; wherein the power generation capacity value represents the annual hour-level time series power generation capacity.
S13, establishing an offshore wind turbine generator combination model; the offshore wind turbine generator set combination model comprises an objective function established by taking the lowest power generation cost of a power system as a target and corresponding constraint conditions.
And S14, performing production simulation calculation on the offshore wind turbine generator set combined model according to the power generation capacity value and the preprocessed operation boundary condition to obtain a production simulation calculation result.
It can be understood that large-scale offshore wind power integration brings great challenges to power supply, power grid peak shaving and traditional production simulation methods due to the characteristics of randomness, volatility and intermittency of offshore wind power. The hydropower is a high-quality adjusting resource, the multi-time scale adjustment of the electric power and the electric quantity can be realized through the reservoir adjusting action, the output and the water storage of the hydropower are reduced when the wind power is generated greatly, the output power generation is increased when the wind power is generated slightly, and the wind-water complementation is realized. Therefore, new methods need to be found to simulate this.
Compared with the prior art, the embodiment of the invention provides an offshore wind turbine-based power system production simulation method, which can be used for comprehensively considering all constraint conditions and annual hour-level time sequence power generation capacity of a power system on the basis of keeping large-scale offshore wind power grid connection by adopting a wind turbine combination model and aiming at the lowest power generation cost of the power system, effectively considering the characteristics of randomness, volatility and intermittency of wind power by taking hours as time intervals, days as calculation units and years as calculation periods, solving the problem of insufficient consideration of the prior art on wind turbine production simulation research, and realizing annual fine simulation of the power system.
As an optional embodiment, the operation boundary conditions of the power system include a time sequence load curve, a system parameter, and a unit parameter.
As an optional embodiment, the obtaining method of the power generation capability value of the offshore wind turbine includes:
acquiring a power generation capacity calculation parameter of an offshore wind turbine;
and calculating the power generation capacity value of the offshore wind turbine generator according to the power generation capacity calculation parameters.
As an optional embodiment, the calculation formula of the power generation capability value of the offshore wind turbine is specifically:
Figure BDA0003271740410000051
wherein, Pwind,maxThe power generation capacity value of the offshore wind turbine generator set is calculated according to the power generation capacity calculation parameters including the installed capacity R of the offshore wind turbine generator setwindAnd the offshore wind speed analog value v in the time period ttCut-in wind velocity vinRated wind speed vratedCut-out wind speed vout。
It should be noted that the offshore wind power generation capacity is calculated according to the simulated wind speed and the power characteristics of the fan, and is in the form of a whole-year hour-level time sequence power generation capacity curve.
As an optional embodiment, the power generation cost of the power system includes power generation cost of a thermal power generating unit which cannot be started or stopped within a day, power generation cost of a thermal power generating unit which can be started or stopped within a day, power generation cost of a renewable energy source unit, power generation cost of a hydroelectric generating unit, and power generation cost of a pumped storage unit.
As an optional embodiment, the expression of the objective function is specifically:
Figure BDA0003271740410000061
wherein V, P, I each representsThe power generation cost, the output power and the start-stop state variables, variable subscripts C, f, h, p, w and wd respectively represent a non-start-stop thermal power generating unit, a hydroelectric generating unit, a pumping and storage unit, a renewable energy generating unit and cut renewable energy, and variable superscripts t and t-1 represent a time period t and a time period t-1, CwTo cut off the cost of renewable energy sources, CfThe start and stop cost of the unit is saved.
It will be appreciated that the above-described,
Figure BDA0003271740410000062
indicating the output of the thermal power generating unit which can not be started or stopped in the day in the time period t,
Figure BDA0003271740410000063
the output of the starting and stopping electric group in the time t in the day is shown,
Figure BDA0003271740410000064
representing the output of the renewable energy unit in the time period t,
Figure BDA0003271740410000065
representing the output of the hydroelectric generating set in a time period t,
Figure BDA0003271740410000066
representing the pumped-storage unit's output during time period t,
Figure BDA0003271740410000067
representing the removal output, V, of the renewable energy unit at time tcIndicating the generating cost of the thermal power generating unit which can not be started or stopped in a day, VfIndicating the generating cost V of the thermal power generating unit which can be started and stopped in a daywRepresents the generating cost of the renewable energy source unit, VhRepresenting the generating cost of the hydroelectric generating set, VpThe power generation cost of the pumped storage unit is shown,
Figure BDA0003271740410000068
and starting and stopping state variables of the thermal power generating unit at a time t within a day.
As an optional embodiment, the preset constraint conditions include a power balance constraint, a power system positive and negative standby constraint, a unit output upper and lower limit constraint, a start-stop unit minimum start-up and stop time constraint, a unit climbing constraint, a hydroelectric generating set electric quantity constraint, a pumped storage unit pumped power generation balance constraint, and a variable range constraint.
Illustratively, the mathematical expression for the constraint is as follows:
Figure BDA0003271740410000069
Figure BDA00032717404100000610
PcminIt c+PfminIt f+PhminIt h-Pp,pumpmaxIt p,pump≤Dt-rdDt (5)
PcminIt c≤Pt c≤PcmaxIt c (6)
PfminIt f≤Pt f≤PfmaxIt f (7)
PhminIt h≤Pt h≤PhmaxIt h (8)
Figure BDA0003271740410000071
Figure BDA0003271740410000072
Figure BDA0003271740410000073
Figure BDA0003271740410000074
ΔPc,downIt c≤Pt c-Pt-1 c≤ΔPc,upIt c (13)
ΔPf,downIt f≤Pt f-Pt-1 f≤ΔPf,upIt f (14)
Figure BDA0003271740410000075
Figure BDA0003271740410000076
Figure BDA0003271740410000077
Figure BDA0003271740410000078
Figure BDA0003271740410000079
in the formula:
superscript t represents the time period number;
t represents the total number of periods;
Figure BDA00032717404100000710
starting and stopping state variables of the thermal power generating unit in a period t within a day;
Figure BDA00032717404100000711
starting and stopping state variables of the hydroelectric generating set at t time period;
Figure BDA00032717404100000712
starting and stopping state variables of the thermal power generating unit in a period t within a day;
Figure BDA00032717404100000713
generating state variables for the pumping and storage unit at t time period;
Figure BDA00032717404100000714
pumping water state variables for the pumping and storage unit at the time t;
Dtrepresents the load of the system period t;
ruthe positive standby rate required by the system in the time period t;
rdthe negative standby rate required by the system in the time period t;
Pcmaxrepresenting the maximum output of the thermal power generating unit which cannot be started or stopped;
Pfmaxrepresenting the maximum output of a thermal power generating unit which can be started and stopped;
Phmaxrepresenting the maximum output of the hydroelectric generating set;
Pp,genmaxrepresenting the maximum power generation output of the pumped storage unit;
Pp,pumpmaxrepresenting the maximum pumping output of the water energy storage unit;
Pwmaxrepresenting the power generation capacity of the new energy unit;
Pcminrepresenting the minimum output of the thermal power generating unit which cannot be started or stopped;
Pfminrepresenting the minimum output of the thermal power generating unit which can be started and stopped;
Phminrepresenting the minimum output of the hydroelectric generating set;
λpindicating pumped storage unit conversion efficiency；
ΔtonRepresents a minimum continuous boot time;
Δtoffrepresents a minimum continuous down time;
Pc,uprepresenting the output climbing upper limit of the thermal power generating unit which cannot be started or stopped;
Pc,downrepresenting the lower limit of the power output climbing of the thermal power generating unit which can be started and stopped;
Pf,uprepresenting the upper limit of the power output climbing of the thermal power generating unit which can be started and stopped;
Pf,downrepresenting the lower limit of the power output climbing of the thermal power generating unit which cannot be started or stopped;
Emaxand the daily generated energy of the hydroelectric generating set is represented.
Wherein the content of the first and second substances,
the formula (3) is: power balance constraints;
formulas (4) to (5) are: system positive and negative standby constraints;
formulas (6) to (10) are: restraining the upper and lower limits of the unit output;
the formulas (11) to (12) are: the minimum starting-up and stopping time of the starting and stopping unit is restricted;
the formulas (13) to (14) are: the unit is restrained in climbing;
equation (15) is: the electric quantity of the hydroelectric generating set is restricted;
the formulas (16) to (17) are: the pumping and power generation of the pumping and storage unit are balanced and constrained;
the formulas (18) to (19) are: and (5) restricting variable ranges.
It is worth explaining that on the basis of keeping large-scale offshore wind power grid connection, the economic optimization can be kept by meeting the requirements of positive and negative standby and small-scale climbing.
As an optional embodiment, in step S14, by performing production simulation calculation on the offshore wind turbine generator combination model, the balance influence of large-scale offshore wind power integration on the system power and power can be analyzed to obtain a yearly power and power balance result, and meanwhile, the yearly wind curtailment power can be accurately calculated by accumulating the yearly wind curtailment power every day, so that the wind curtailment rate analysis can be more scientifically and reasonably performed.
It is worth explaining that, a conventional production simulation model is oriented to a power system mainly based on traditional hydroelectric power, randomness, volatility and intermittence characteristics of offshore wind power cannot be considered, so that the flexibility of the system is not considered sufficiently, annual wind power consumption conditions are obtained through estimation, the annual wind power consumption conditions cannot be accurately calculated, and the abandoned wind statistics is inaccurate. By applying the production simulation method provided by the embodiment, the annual wind curtailment electric quantity can be obtained by accumulating the annual wind curtailment electric quantity every day and accurately calculating, and the analysis of the wind curtailment rate can be more scientifically and reasonably carried out.
Referring to fig. 2, a schematic structural diagram of an electric power system production simulation apparatus based on an offshore wind turbine provided in an embodiment of the present invention includes:
the operation boundary condition processing module 21 is configured to obtain an operation boundary condition of the power system, and pre-process the operation boundary condition;
the power generation capacity acquisition module 22 is used for acquiring a power generation capacity value of the offshore wind turbine; wherein the value of the generating capacity represents the annual hour-level time sequence generating capacity;
the combined model establishing module 23 is used for establishing an offshore wind turbine combination model; the offshore wind turbine generator set combination model comprises an objective function established by taking the lowest power generation cost of a power system as a target and a corresponding constraint condition;
and the production simulation calculation module 24 is used for performing production simulation calculation on the offshore wind turbine generator set combination model according to the power generation capacity value and the preprocessed operation boundary condition to obtain a production simulation calculation result.
Compared with the prior art, the embodiment of the invention provides an offshore wind turbine-based power system production simulation device, which can be used for comprehensively considering all constraint conditions and annual hour-level time sequence power generation capacity of a power system on the basis of keeping large-scale offshore wind power grid connection by adopting a wind turbine combination model and aiming at the lowest power generation cost of the power system, effectively considering the characteristics of randomness, volatility and intermittency of wind power by taking hours as time intervals, days as calculation units and years as calculation periods, solving the problem of insufficient consideration of the prior art on wind turbine production simulation research, and realizing annual fine simulation of the power system.
Fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. The terminal device 3 of this embodiment includes: a processor 30, a memory 31 and a computer program stored in said memory 31 and executable on said processor 30. The processor 30, when executing the computer program, implements the steps in each of the above embodiments of the method for simulating the production of an offshore wind turbine based power system. Alternatively, the processor 30 implements the functions of the modules in the above device embodiments when executing the computer program.
Illustratively, the computer program may be divided into one or more modules, which are stored in the memory 31 and executed by the processor 30 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 terminal device 3.
The terminal device 3 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device 3 may include, but is not limited to, a processor 30 and a memory 31. It will be appreciated by those skilled in the art that the schematic diagram is merely an example of a terminal device, and does not constitute a limitation of the terminal device, and may include more or less components than those shown, or combine some components, or different components, for example, the terminal device 3 may further include an input-output device, a network access device, a bus, etc.
The Processor 30 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 30 is the control center of the terminal device 3 and connects the various parts of the whole terminal device 3 by various interfaces and lines.
The memory 31 may be used for storing the computer programs and/or modules, and the processor 30 implements various functions of the terminal device 3 by running or executing the computer programs and/or modules stored in the memory 31 and calling data stored in the memory 31. The memory 31 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. In addition, the memory 31 may include a high speed random access memory, and may also include a 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 terminal device 3 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 in the method according to the above embodiments may be implemented by a computer program, which may be stored in a computer readable storage medium and used by the processor 30 to implement the steps of the above embodiments of the method. 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, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
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 between them, 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 (9)

1. A power system production simulation method based on an offshore wind turbine is characterized by comprising the following steps:
acquiring an operation boundary condition of a power system, and preprocessing the operation boundary condition;
acquiring a power generation capacity value of an offshore wind turbine; wherein the value of the generating capacity represents the annual hour-level time sequence generating capacity;
establishing an offshore wind turbine generator set combination model; the offshore wind turbine generator set combination model comprises an objective function established by taking the lowest power generation cost of a power system as a target and a corresponding constraint condition;
and performing production simulation calculation on the offshore wind turbine generator set combined model according to the power generation capacity value and the preprocessed operation boundary condition to obtain a production simulation calculation result.
2. The offshore wind turbine based power system production simulation method of claim 1, wherein the operational boundary conditions of the power system comprise time sequence load curves, system parameters, and unit parameters.
3. The offshore wind turbine-based power system production simulation method according to claim 1, wherein the power generation capacity value of the offshore wind turbine is obtained by a method specifically comprising:
acquiring a power generation capacity calculation parameter of an offshore wind turbine;
and calculating the power generation capacity value of the offshore wind turbine generator according to the power generation capacity calculation parameters.
4. The offshore wind turbine based power system production simulation method according to claim 3, wherein the calculation formula of the power generation capacity value of the offshore wind turbine is specifically as follows:
Figure FDA0003271740400000011
wherein, Pwind,maxThe power generation capacity value of the offshore wind turbine generator set is calculated according to the power generation capacity calculation parameters including the installed capacity R of the offshore wind turbine generator setwindAnd the offshore wind speed analog value v in the time period ttCut-in wind velocity vinRated wind speed vratedCut-out wind speed vout。
5. The offshore wind turbine based power system production simulation method according to claim 1, wherein the power generation cost of the power system comprises a power generation cost of a thermal power generating unit which cannot be started or stopped within a day, a power generation cost of a thermal power generating unit which can be started or stopped within a day, a power generation cost of a renewable energy source unit, a power generation cost of a hydroelectric power generating unit, and a power generation cost of a pumped storage unit.
6. The offshore wind turbine based power system production simulation method of claim 1, wherein the expression of the objective function is specifically:
Figure FDA0003271740400000021
v, P, I respectively represents power generation cost, output and start-stop state variables, variable subscripts C, f, h, p, w and wd respectively represent a non-start-stop thermal power generating unit, a hydroelectric generating unit, a pumped storage unit, a renewable energy generating unit and cut renewable energy, variable superscripts t and t-1 represent time t and time t-1, CwTo cut off the cost of renewable energy sources, CfThe start and stop cost of the unit is saved.
7. The offshore wind turbine based power system production simulation method of claim 1, wherein the preset constraint conditions include power balance constraint, power system positive and negative standby constraint, unit output upper and lower limit constraint, start-up and stop time constraint for start-up and stop unit minimum, unit climbing constraint, hydroelectric unit electric quantity constraint, pumped storage unit pumping and power generation balance constraint, and variable range constraint.
8. An electric power system production simulation device based on an offshore wind turbine, comprising:
the operation boundary condition processing module is used for acquiring the operation boundary conditions of the power system and preprocessing the operation boundary conditions;
the power generation capacity acquisition module is used for acquiring a power generation capacity value of the offshore wind turbine; wherein the value of the generating capacity represents the annual hour-level time sequence generating capacity;
the combined model establishing module is used for establishing an offshore wind turbine generator combined model; the offshore wind turbine generator set combination model comprises an objective function established by taking the lowest power generation cost of a power system as a target and a corresponding constraint condition;
and the production simulation calculation module is used for carrying out production simulation calculation on the offshore wind turbine generator set combined model according to the power generation capacity value and the preprocessed operation boundary condition to obtain a production simulation calculation result.
9. A terminal device comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor when executing the computer program implementing the offshore wind turbine based power system production simulation method of any of claims 1 to 7.
CN202111104635.2A 2021-09-22 2021-09-22 Power system production simulation method, device and equipment based on offshore wind turbine generator Pending CN113809773A (en)

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