CN108492047A - The efficient distribution method of hydroelectric generating set load continued based on immediate status - Google Patents
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Abstract
The present invention relates to the efficient distribution methods of the hydroelectric generating set load continued based on immediate status, belong to Hydropower Unit distribution technique field；The spatial optimization that is divided into is that the power generation requirements received according to power station reasonably optimize power station unit, determines unit number of units, platform number, realizes the optimum load dispatch between the unit in the Unit Combination；The detailed process of spatial optimization is：First, setting power station parameter such as unit number of units, output step-length, maintenance unit optimum selection；Then user needs setting unit parameter according to optimization, has good directive significance to the daily optimal operation in power station, while ensureing the advance of system, the variation that may occur in the future convenient for system reply software requirement.
Description
Technical field
The present invention relates to the efficient distribution methods of the hydroelectric generating set load continued based on immediate status, belong to Hydropower Unit distribution
Technical field.
Background technology
In recent years, with China's economy develop rapidly, problem of energy crisis getting worse, at present China's thermoelectricity still occupy weight
Ratio is wanted, causing coal resource, there is a serious shortage of the unreasonable problem of energy mix for power generation is urgently to be resolved hurrily.Although China's energy resource structure obtains
Optimization to a certain extent, thermoelectricity accounts for 70% of total installation of generating capacity or more in national capacity of installed generator, and water power accounts for total installation of generating capacity
25% hereinafter, novel energy such as nuclear power, wind-powered electricity generation accounts for the 5% of total installation of generating capacity hereinafter, clean energy resource generator installation accounts for total installed capacity appearance
The proportion of amount is expected to improve, but this does not solve the problems, such as that China's energy resource structure is seriously unbalanced fundamentally.Either from energy
All inevitable requirement reduces thermoelectricity market occupation ratio on source or economic development, and the following energy will be become by greatly developing clean energy resource
The trend of source development.China has abundant water resource to be also underutilized at present, resource serious waste is caused, due to water power
The main task stood also has peak regulation, frequency modulation in addition to serving as base lotus, if HYDROELECTRIC ENERGY is underutilized, the tune of electric system
Peak, frequency modulation and emergent accident ability can weaken significantly, seriously affect the operation of power quality and power system stability safety.Cause
And construction of hydropower facilities is increased to solving China's problem of energy crisis, power quality is improved, ensures that power system security stable operation has
Important meaning.
In conjunction with China's national situation, other than increasing construction of hydropower facilities, it is necessary to it is energy saving, realize the science pipe to electric system
Reason, improves its economic benefit.The power station clean electric power generation unit important as electric system, power station management operating mode are direct
Affect the economic benefit of entire electric system, therefore, the target of hydroelectric station operation management in addition to ensure the stabilization of power grids, safety,
High-quality operation further includes rationally utilizing hydraulic power potentials and water conservancy projects, ensures input as few as possible, obtain as big as possible
Economic benefit.
Generation 30 or 40 years, " base load method " are generally received by people, and so-called " base load method " is that unit is negative in power station
Lotus is distributed according to unit efficiency, and high efficiency unit is completely sent out, remaining distributes unit load according to unit efficiency
Economic Operation in Hydropower Station optimizes an important process in operational management as hydroelectric system, and main task is to meet electric energy
Under the premise of safe and stable, fine quality production, rational Optimized Operation is carried out to the generating equipment in power plant, to the greatest extent may be used to obtain
The big economic benefit of energy
For daily regulation reservoir, economical operation of hydropower plants is exactly the burden requirement for the day part for receiving control centre
（24,48 or 96 periods can be divided into, generally use 24 periods）, it then follows certain Optimality Criteria, by load reasonable distribution
To each unit, the startup-shutdown plan of unit is determined, it is ensured that the economic benefit that power station obtains is maximum.
Invention content
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of reasonable designs, easy to use
The efficient distribution method of hydroelectric generating set load continued based on immediate status.
To achieve the above object, the technical solution adopted by the present invention is：The hydroelectric generating set load continued based on immediate status
Efficient distribution method is divided into two parts of spatial optimization and time optimization；The spatial optimization that is divided into is connect according to power station
The power generation requirements received reasonably optimize power station unit, determine unit number of units, platform number, realize the machine in the Unit Combination
Optimum load dispatch between group；The detailed process of spatial optimization is：First, setting power station parameter such as unit number of units, step of contributing
Long, maintenance unit optimum selection；Then user according to optimization need unit parameter is set, finally according to the processing that obtains of initialization after
Unit rating curve carry out spatial optimization calculating；The time optimization be based on spatial optimization, according to
The daily load in power station requires, load optimal distribution between the electrical generation burden implementation unit given not only according to each period, it is also contemplated that
Between period due to unit undertakes the variation of load and startup-shutdown consumption flow caused by issuable unit startup-shutdown and its
He is with the loss of water equivalent；Time optimization detailed process is：First determine input quantity, i.e., power station operating head polishing, the period and
Secondly the daily load requirement on the same day opens graceful machine water consumption, unit cavitation erosion vibration according to head, period and burden requirement and unit
Constraintss, the optimal optimum load dispatch tables for obtaining each unit in space such as area's limitation.
The efficient distribution method of hydroelectric generating set load continued based on immediate status is divided into two steps：
The first step, establishing full brand-name computer group head according to in-plant economical operation spatial optimization mathematical model and immediate status algorithm can
Optimized operation summary table within the scope of row domain and output under possible load；
Second step gives power station load, upstream water level at the beginning of day and optimization according to optimized operation summary table according to day electric system
The known conditions such as period formulate Operation Mode Optimization in the factory on the same day and are such as switched between number of units, unit commitment schedule, booting unit
Optimum load dispatch；
It refers to being used in the time optimization stage that above-mentioned steps, which use Approach by inchmeal Dynamic Programming, the Approach by inchmeal Dynamic Programming,
With the Dynamic Programming that variable step Step wise approximation solves, most important advantage is algorithmic statement, and programming is realized simply, can be handled each
The complicated constraints of kind；The basic thought that method solves in-plant economical operation operation is the premise in the load for fixing other units
Under, the startup-shutdown plan of each unit each period is solved, and repeat this process until startup-shutdown plan no longer changes；It can be one
Determine to reduce dimension in degree, for Huge Power Station, since unit number of units is more, unit installed capacity is increasingly huge, causes to change
Generation number is excessive, and convergence rate is not high, and improvement effect is little.
Include database initialization module, message tube based on the efficient distribution system of hydroelectric generating set load that immediate status continues
Manage module, system initialization module, optimization computing module, space optimization analysis module, time-optimized analysis module；
Described information management module mainly include user management, unit consume flow curve inquiry, unit cavitation erosion vibrating area management with
And the functions such as power station daily load curve inquiry.User management is the management to system login password；Unit consumes flow curve management
It is the inquiry to all types of unit indicatrixes of the three gorges hydropower plant；Unit cavitation erosion vibrating area management is all types of to the three gorges hydropower plant
The management of the cavitation erosion vibrating area of unit includes inquiry, addition and deletion cavitation erosion vibrating area；Power station daily load curve query function is
The daily load requirement on the same day that inquiry Three Gorges cascade control centre is assigned；
The system initialization module includes hydropower station system parameter setting, unit parameter setting, algorithms selection, data processing.
Hydroelectric system parameter setting includes unit number of units, unit maintenance state, the setting of output step-length；Unit parameter setting is to be directed to water power
The parameter of each unit of standing is managed, the setting of unit startup-shutdown water consumption, unit cavitation erosion vibrating area setting；Algorithms selection is needle
To the algorithms selection that system space optimization and time optimal propose, including immediate status algorithm, gradually forcing based on precedence table
Nearly immediate status algorithm and intelligent algorithm；Data processing includes preserving configuration parameter, the importing of unit rating curve, unit
Maximin output table and output interpolation, cavitation erosion vibrating area processing and spatial optimization calculate.
The optimization computing module is the primary control program module of whole system, the optimal fortune mainly established according to initialization
Row summary table is formulated under specific head, the startup-shutdown plan of unit under the premise of given load, between the number of units that is switched on and booting unit
Optimum load dispatch.Setting, head selection, choosing period of time, optimization calculating including daily load curve, unit commitment optimum results
Water consumption under display, current loads plan of distribution is shown, the sharing of load conditional curve of each unit different periods is shown and hand
The water consumption of dynamic input load compares, Unit Commitment state diagram is shown and the preservation of daily load result.Current loads distribution meter
Flux Loss under drawing shows it is each under current loads plan of distribution；The consumption flow curve of unit different periods algorithms of different
Comparison.The sharing of load conditional curve of each unit different periods is shown before being current loads plan of distribution and current algorithm
Under the conditions of carrying, the unit commitment status display of 24 periods of every unit can intuitively check the startup-shutdown state of unit
And sharing of load.
Spatial optimization with " minimum consumption flow " for criterion, according to spatial optimization mathematical model and immediate status algorithm
Optimize be calculated load allow variation range in any possible load under the plan of unit startup-shutdown, booting number of units,
Optimum load dispatch between Unit Combination and booting unit.Spatial optimization includes electric power station system parameter setting, unit parameter
Setting, algorithms selection, the importing of unit rating curve, minimax output interpolation, the processing of cavitation erosion vibrating area and space are most
Optimization calculates.
This system one is divided into three layers from the inside to the outside, the data Layer that is made of respectively database, operation layer and with
The expression layer of family connection；The each layer of system has independent processing function, has data connection between every layer.Such layer-stepping
Structure is easy to implement different developers and develops different levels, has single thread operation transformation multithreading to be carried out at the same time, shares out the work and helps one another,
Simultaneously because between layers relatively independent, degree of dependence is greatly reduced, and can facilitate that realization standardizes and module is replaced, just
In each layer developer operation, maintenance system；
The data base management system of the data Layer has high-performance using SQL Server2012, SQL Server2012
Design supports graphically managing tool, supports remote system administration, strong issued transaction function and has autonomous SQL languages
The features such as speech.
The operation layer include the immediate status algorithm of spatial optimization, time optimization use prolonged based on immediate status
The various algorithms such as continuous Approach by inchmeal immediate status algorithm and intelligent algorithm further include the face that " determining water with electricity " is Optimality Criteria
Include additionally the classes such as example various interpolation of general tool, lookup, sequence to the economical operation task class of object, it is common to cooperate
Complete the functional requirement of whole system.
The expression layer is responsible for receiving the data demand of user's operation input on interface, and the data demand of input is transmitted
To operation layer, realizes the function of user's requirement in conjunction with data Layer and presented as a result, for abnormality or not in expression layer
It takes and makes friendly prompt when logical consequence occurs in time.Because user is in direct contact expression layer, largely to the evaluation of system
Depending on the design of expression layer, this requires expression layer designs to have the function of beautiful, practicality is easy to operate etc..
With the above structure, the present invention has the beneficial effect that：The hydroelectric machine of the present invention continued based on immediate status
The group efficient distribution method of load devises optimal including system user information inquiry, the inquiry of unit rating curve, space
Change, time optimization and the optimum results functions such as relatively, has good directive significance to the daily optimal operation in power station, simultaneously
The advance of guarantee system, the variation that may occur in the future convenient for system reply software requirement；Participate in unit, the startup-shutdown of operation
Water consumption, the constrained parameters such as vibrating area that cavitate can flexibly be set by user according to operation is practical, realization graph data real time modifying,
The functions such as the diversified forms display optimization result such as figure, table and curve.
Specific implementation mode
Present embodiment is divided into two parts of spatial optimization and time optimization；The spatial optimization that is divided into is
The power generation requirements received according to power station reasonably optimize power station unit, determine unit number of units, platform number, realize the unit
The optimum load dispatch between unit in combination；The detailed process of spatial optimization is：First, parameter such as unit platform in power station is set
Number, output step-length, maintenance unit optimum selection；Then user needs setting unit parameter according to optimization, such as adding for unit vibration area
Modification and preservation, the startup-shutdown water consumption of unit, algorithms selection, system is added to import unit flow spy according to the constraints of setting
Linearity curve, the processing for carrying out rating curve, the processing in unit vibration area；Finally according to the initialization machine that show that treated
Group rating curve carries out spatial optimization calculating；The time optimization is based on spatial optimization, according to power station
Daily load requirement, not only according to each period give electrical generation burden carry out unit between load optimal distribution, it is also contemplated that the period
Between due to unit undertake the variation of load and startup-shutdown consumption flow caused by issuable unit startup-shutdown and other with
The loss of water equivalent；Time optimization detailed process is：Input quantity, i.e. power station operating head polishing, period and the same day are determined first
Daily load requirement, secondly according to head, period and burden requirement and unit open graceful machine water consumption, unit cavitation erosion vibrating area limit
Constraintss, the optimal optimum load dispatch tables for obtaining each unit in space such as system.
Present embodiment is divided into two steps：The first step, according to in-plant economical operation spatial optimization mathematical model
The optimized operation summary table within the scope of full brand-name computer group head feasible zone and output under possible load is established with immediate status algorithm；The
Two steps give power station load, upstream water level at the beginning of day and optimization period etc. according to optimized operation summary table according to day electric system
Known conditions, formulate Operation Mode Optimization in the factory on the same day be such as switched on it is optimal negative between number of units, unit commitment schedule, booting unit
Lotus is distributed；Above-mentioned steps use Approach by inchmeal Dynamic Programming, and the Approach by inchmeal Dynamic Programming refers in the time optimization stage
It is algorithmic statement to use the Dynamic Programming solved with variable step Step wise approximation, most important advantage, and programming is realized simply, can be located
Manage the constraints of various complexity；The basic thought that method solves in-plant economical operation operation is in the load for fixing other units
Under the premise of, the startup-shutdown plan of each unit each period is solved, and repeat this process until startup-shutdown plan no longer changes；It can
Dimension is reduced to a certain extent, and for Huge Power Station, since unit number of units is more, unit installed capacity is increasingly huge, makes
Excessive at iterations, convergence rate is not high, and improvement effect is little.
Include database initialization module, message tube based on the efficient distribution system of hydroelectric generating set load that immediate status continues
Manage module, system initialization module, optimization computing module, space optimization analysis module, time-optimized analysis module；
Described information management module mainly include user management, unit consume flow curve inquiry, unit cavitation erosion vibrating area management with
And the functions such as power station daily load curve inquiry.User management is the management to system login password；Unit consumes flow curve management
It is the inquiry to all types of unit indicatrixes of the three gorges hydropower plant；Unit cavitation erosion vibrating area management is all types of to the three gorges hydropower plant
The management of the cavitation erosion vibrating area of unit includes inquiry, addition and deletion cavitation erosion vibrating area；Power station daily load curve query function is
The daily load requirement on the same day that inquiry Three Gorges cascade control centre is assigned；
The system initialization module includes hydropower station system parameter setting, unit parameter setting, algorithms selection, data processing.
Hydroelectric system parameter setting includes unit number of units, unit maintenance state, the setting of output step-length；Unit parameter setting is to be directed to water power
The parameter of each unit of standing is managed, the setting of unit startup-shutdown water consumption, unit cavitation erosion vibrating area setting；Algorithms selection is needle
To the algorithms selection that system space optimization and time optimal propose, including immediate status algorithm, gradually forcing based on precedence table
Nearly immediate status algorithm and intelligent algorithm；Data processing includes preserving configuration parameter, the importing of unit rating curve, unit
Maximin output table and output interpolation, cavitation erosion vibrating area processing and spatial optimization calculate.
The optimization computing module is the primary control program module of whole system, the optimal fortune mainly established according to initialization
Row summary table is formulated under specific head, the startup-shutdown plan of unit under the premise of given load, between the number of units that is switched on and booting unit
Optimum load dispatch.Setting, head selection, choosing period of time, optimization calculating including daily load curve, unit commitment optimum results
Water consumption under display, current loads plan of distribution is shown, the sharing of load conditional curve of each unit different periods is shown and hand
The water consumption of dynamic input load compares, Unit Commitment state diagram is shown and the preservation of daily load result.Current loads distribution meter
Flux Loss under drawing shows it is each under current loads plan of distribution；The consumption flow curve of unit different periods algorithms of different
Comparison.The sharing of load conditional curve of each unit different periods is shown before being current loads plan of distribution and current algorithm
Under the conditions of carrying, the unit commitment status display of 24 periods of every unit can intuitively check the startup-shutdown state of unit
And sharing of load.
Spatial optimization with " minimum consumption flow " for criterion, according to spatial optimization mathematical model and immediate status algorithm
Optimize be calculated load allow variation range in any possible load under the plan of unit startup-shutdown, booting number of units,
Optimum load dispatch between Unit Combination and booting unit.Spatial optimization includes electric power station system parameter setting, unit parameter
Setting, algorithms selection, the importing of unit rating curve, minimax output interpolation, the processing of cavitation erosion vibrating area and space are most
Optimization calculates.
This system one is divided into three layers from the inside to the outside, the data Layer that is made of respectively database, operation layer and with
The expression layer of family connection；The each layer of system has independent processing function, has data connection between every layer.Such layer-stepping
Structure is easy to implement different developers and develops different levels, has single thread operation transformation multithreading to be carried out at the same time, shares out the work and helps one another,
Simultaneously because between layers relatively independent, degree of dependence is greatly reduced, and can facilitate that realization standardizes and module is replaced, just
In each layer developer operation, maintenance system；
The data base management system of the data Layer has high-performance using SQL Server2000, SQL Server2000
Design supports graphically managing tool, supports remote system administration, strong issued transaction function and has autonomous SQL languages
The features such as speech.
The operation layer include the immediate status algorithm of spatial optimization, time optimization use prolonged based on immediate status
The various algorithms such as continuous Approach by inchmeal immediate status algorithm and intelligent algorithm further include the face that " determining water with electricity " is Optimality Criteria
Include additionally the classes such as example various interpolation of general tool, lookup, sequence to the economical operation task class of object, it is common to cooperate
Complete the functional requirement of whole system.
The expression layer is responsible for receiving the data demand of user's operation input on interface, and the data demand of input is transmitted
To operation layer, realizes the function of user's requirement in conjunction with data Layer and presented as a result, for abnormality or not in expression layer
It takes and makes friendly prompt when logical consequence occurs in time.Because user is in direct contact expression layer, largely to the evaluation of system
Depending on the design of expression layer, this requires expression layer designs to have the function of beautiful, practicality is easy to operate etc..
The hydroelectric generating set load efficient distribution method of the present invention continued based on immediate status, is devised including system
User information inquiry, the inquiry of unit rating curve, spatial optimization, time optimization and the optimum results work(such as relatively
Can, there is good directive significance to the daily optimal operation in power station, while ensureing the advance of system, software is coped with convenient for system
The variation that demand may occur in the future；Participate in the unit of operation, startup-shutdown water consumption, cavitation erosion vibrating area etc. constrained parameters can by with
Family the diversified forms display optimizations such as graph data real time modifying, figure, table and curve are realized according to the practical flexibly setting of operation
The functions such as a result.
The above is merely illustrative of the technical solution of the present invention and unrestricted, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (4)
1. the efficient distribution method of hydroelectric generating set load continued based on immediate status, it is characterised in that：Be divided into spatial optimization and
Two parts of time optimization；The spatial optimization that is divided into is that the power generation requirements received according to power station carry out power station unit
Rational optimization, determines unit number of units, platform number, realizes the optimum load dispatch between the unit in the Unit Combination；Space is optimal
The detailed process of change is：First, setting power station parameter such as unit number of units, output step-length, maintenance unit optimum selection；Then user according to
Unit parameter is arranged in the needing of optimization, and finally showing that treated according to initialization, unit rating curve carries out space most
Optimization calculates；The time optimization is required according to the daily load in power station, not only according to each based on spatial optimization
The electrical generation burden that period gives carries out load optimal distribution between unit, it is also contemplated that since unit undertakes the variation of load between the period
And caused by issuable unit startup-shutdown startup-shutdown consumption flow and other with the loss of water equivalent；Time optimization is specific
Flow is：First determine input quantity, i.e., power station operating head polishing, the period and the daily load on the same day requirement, secondly according to head, when
Section and burden requirement and unit open the constraintss such as graceful machine water consumption, unit cavitation erosion vibrating area limitation, space it is optimal obtain it is each
The optimum load dispatch table of unit；
The distribution method is divided into two steps：
The first step, establishing full brand-name computer group head according to in-plant economical operation spatial optimization mathematical model and immediate status algorithm can
Optimized operation summary table within the scope of row domain and output under possible load；
Second step gives power station load, upstream water level at the beginning of day and optimization according to optimized operation summary table according to day electric system
The known conditions such as period formulate Operation Mode Optimization in the factory on the same day and are such as switched between number of units, unit commitment schedule, booting unit
Optimum load dispatch.
2. the hydroelectric generating set load efficient distribution method according to claim 1 continued based on immediate status, feature are existed
In：The efficient distribution system of hydroelectric generating set load include database initialization module, information management module, system initialization module,
Optimize computing module, space optimization analysis module, time-optimized analysis module；
Described information management module mainly include user management, unit consume flow curve inquiry, unit cavitation erosion vibrating area management with
And the functions such as power station daily load curve inquiry；User management is the management to system login password；Unit consumes flow curve management
It is the inquiry to all types of unit indicatrixes of the three gorges hydropower plant；Unit cavitation erosion vibrating area management is all types of to the three gorges hydropower plant
The management of the cavitation erosion vibrating area of unit includes inquiry, addition and deletion cavitation erosion vibrating area；Power station daily load curve query function is
The daily load requirement on the same day that inquiry Three Gorges cascade control centre is assigned；
The system initialization module includes hydropower station system parameter setting, unit parameter setting, algorithms selection, data processing；
Hydroelectric system parameter setting includes unit number of units, unit maintenance state, the setting of output step-length；Unit parameter setting is to be directed to water power
The parameter of each unit of standing is managed, the setting of unit startup-shutdown water consumption, unit cavitation erosion vibrating area setting；Algorithms selection is needle
To the algorithms selection that system space optimization and time optimal propose, including immediate status algorithm, gradually forcing based on precedence table
Nearly immediate status algorithm and intelligent algorithm；Data processing includes preserving configuration parameter, the importing of unit rating curve, unit
Maximin output table and output interpolation, cavitation erosion vibrating area processing and spatial optimization calculate；
The optimization computing module is the primary control program module of whole system, and the optimized operation mainly established according to initialization is total
Table is formulated under specific head, the startup-shutdown plan of unit under the premise of given load, between the number of units that is switched on and booting unit most
Excellent sharing of load；Setting, head selection, choosing period of time, optimization including daily load curve calculate, unit commitment optimum results are aobvious
Show, the water consumption under current loads plan of distribution is shown, the sharing of load conditional curve of each unit different periods is shown and manual
The water consumption of input load compares, Unit Commitment state diagram is shown and the preservation of daily load result.
3. the hydroelectric generating set load efficient distribution method according to claim 1 continued based on immediate status, feature are existed
In：The efficient distribution system of hydroelectric generating set load continued based on immediate status one is divided into three layers from the inside to the outside, is respectively
Data Layer, operation layer and the expression layer being connect with user being made of database.
4. the hydroelectric generating set load efficient distribution method according to claim 3 continued based on immediate status, feature are existed
In：The data base management system of the data Layer has high-performance using SQL Server2012, SQL Server2012
Design supports graphically managing tool, supports remote system administration, strong issued transaction function and has autonomous SQL languages
Speech feature.
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