CN107453655B - A kind of method and device of control generating set power output - Google Patents
A kind of method and device of control generating set power output Download PDFInfo
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- CN107453655B CN107453655B CN201610377822.0A CN201610377822A CN107453655B CN 107453655 B CN107453655 B CN 107453655B CN 201610377822 A CN201610377822 A CN 201610377822A CN 107453655 B CN107453655 B CN 107453655B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
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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
-
- 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
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The embodiment of the invention discloses a kind of method and devices that control generating set is contributed, applied to gen-set control system, which comprises receive the dispatch command for carrying indicated output power, and determine the current activity of force out of generating set；The power deviation of the indicated output power and current activity of force out is calculated, and calculates the cumlative energy deviation of current time generating set；The regulations speed of the generating set is set according to the absolute value of the power deviation and the inclined absolute value of the difference of the cumlative energy.Using this programme, can control generating set currently goes out activity of force according to setting regulations speed trace scheduling instruction, the reality of generating set is gone out the deviation for going out activity of force indicated in activity of force and power dispatching instruction to control in energy-storage system adjustable extent, avoids energy-storage system from occurring overcharging or the phenomenon that over-discharge.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of method and device of control generating set power output.
Background technique
In electricity generation system, including the generating set for generating power output, the generating set control for controlling generating set
System processed, and the energy-storage system for cooperating generating set to run.Energy-storage system combines response automatic generation with generating set
The operation of (AGC) dispatch command is controlled, the overall power output that electricity generation system is provided out is contributed by generating set, becomes generating set
With the summation of the power output of energy-storage system, the mutual supplement with each other's advantages of energy-storage system and generating set may be implemented.
In actual moving process, energy-storage system meets quick AGC scheduling as quick response unit, by charging, discharging
Instruction, the especially requirement of Rapid exhumation regulating command.Generating set is then used as basic energy unit, contributes for continuous one direction
And energy-storage system longtime running provides energy support.By above-mentioned combined operating strategy, the same of AGC dispatch command can met
When, the rapid adjustability of energy-storage system is made full use of, generating set is reduced and adjusts pressure, reduces generator set device operation mill
Damage and energy consumption.But if the deviation of power output indicated by the practical power output and AGC dispatch command of generating set exceeds energy-storage system
In adjustable extent, energy-storage system, which just will appear, to be overcharged or the danger of over-discharge, damages energy-storage system.
Therefore, how energy-storage system is guaranteeing energy-storage system During Process of Long-term Operation with during generating set combined operating
In energy balance, avoid energy-storage system from occurring overcharging or while over-discharge danger, reduce generating set and adjust pressure, reduce hair
Electric unit equipment service wear and energy consumption are a urgent problems to be solved.
Summary of the invention
It is long to solve energy-storage system the embodiment of the invention discloses a kind of method and device of control generating set power output
Occur overcharging in phase operational process or the problem of over-discharge, generating set is effectively reduced and adjusts pressure, to reach reduction generator
The effect of group equipment service wear and energy consumption.Technical solution is as follows:
In a first aspect, being applied to generator set control system the present invention provides a kind of method of control generating set power output
System, which comprises
The dispatch command for carrying indicated output power is received, and determines the current activity of force out of generating set；
The power deviation of the indicated output power and current activity of force out is calculated, and calculates current time generating set
Cumlative energy deviation；
The generating set is set according to the absolute value of the power deviation and the inclined absolute value of the difference of the cumlative energy
Regulations speed.
Preferably, described according to the absolute value of the power deviation and the inclined absolute value of the difference setting of the cumlative energy
The regulations speed of generating set, comprising:
Judge whether the absolute value of the power deviation is greater than preset power deviation threshold value；
If it is, the regulations speed of generating set is set as first rate；
If it is not, then judging whether the inclined absolute value of the difference of the cumlative energy is greater than preset cumlative energy deviation threshold
Value；
It, will power generation if the inclined absolute value of the difference of cumlative energy is not more than preset cumlative energy deviation threshold
The regulations speed of unit is set as third speed；
If the inclined absolute value of the difference of cumlative energy is greater than preset cumlative energy deviation threshold, according to
The product of power deviation and the cumlative energy deviation sets the regulations speed of the generating set；
Wherein, the first rate is greater than third speed.
Preferably, the preset power deviation threshold value is less than the power-handling capability of energy-storage system.
Preferably, the preset cumlative energy deviation threshold is less than the 1/2 of the rated energy value of energy-storage system.
Preferably, the product according to the power deviation and the cumlative energy deviation sets the generating set
Regulations speed, comprising:
Judge whether the power deviation and the product of the cumlative energy deviation are greater than 0；
If it is greater than 0, then the regulations speed of generating set is set as the second rate；
If being not more than 0, the regulations speed of generating set is set as third speed；
Wherein, the first rate is greater than the second rate, and second rate is greater than third speed.
Preferably, the first rate be the generating set rated energy 2% per minute；
Second rate is the 1/2 of the first rate；
The third speed is 0.
Preferably, the calculation formula of the cumlative energy deviation are as follows:
Wherein, EDeviationFor the cumlative energy deviation, PDeviationFor the power deviation, T is the current time, t0To calculate
Start time.
Second aspect, the present invention also provides a kind of devices of control generating set power output, are applied to generator set control
System, comprising:
Dispatch command receiving module for receiving the dispatch command for carrying indicated output power, and determines generating set
Currently go out activity of force；
Deviation computing module, for calculating the power deviation of the indicated output power and current activity of force out, Yi Jiji
Calculate the cumlative energy deviation of current time generating set；
Rate setting module, for being set according to the absolute value and the inclined absolute value of the difference of the cumlative energy of the power deviation
The regulations speed of the fixed generating set.
Preferably, the rate setting module includes:
First judging unit, for judging whether the absolute value of the power deviation is greater than preset power deviation threshold
Value；
First processing units, when being greater than preset power deviation threshold value for the absolute value in the power deviation,
The regulations speed of generating set is set as first rate；
Second judgment unit is not more than preset power deviation threshold value for the absolute value in the power deviation
When, judge whether the inclined absolute value of the difference of the cumlative energy is greater than preset cumlative energy deviation threshold；
The second processing unit, for inclined no more than preset cumlative energy in the inclined absolute value of the difference of the cumlative energy
The regulations speed of generating set is set as third speed by poor threshold value；
Third judging unit, for being greater than preset cumlative energy deviation in the inclined absolute value of the difference of the cumlative energy
When threshold value, the regulations speed of the generating set is set according to the product of the power deviation and the cumlative energy deviation；
Wherein, the first rate is greater than third speed.
Preferably, the preset power deviation threshold value is less than the power-handling capability of energy-storage system.
Preferably, the preset cumlative energy deviation threshold is less than the 1/2 of the rated energy value of energy-storage system.
Preferably, the third judging unit is specifically used for:
Judge whether the power deviation and the product of the cumlative energy deviation are greater than 0；
Correspondingly, the rate setting module further include:
Third processing unit, for will generate electricity when the product of the power deviation and the cumlative energy deviation is greater than 0
The regulations speed of unit is set as the second rate；
Fourth processing unit, for when the product of the power deviation and the cumlative energy deviation is not more than 0, then will
The regulations speed of generating set is set as third speed；
Wherein, the first rate is greater than the second rate, and second rate is greater than third speed.
Preferably, the first rate be the generating set rated energy 2% per minute；
Second rate is the 1/2 of the first rate；
The third speed is 0.
Preferably, the calculation formula of the cumlative energy deviation are as follows:
Wherein, EDeviationFor the cumlative energy deviation, PDeviationFor the power deviation, T is the current time, t0To calculate
Start time.
In the present solution, gen-set control system receives power dispatching instruction, and determine the current power output function of generating set
After rate, according to power deviation compared with preset power deviation threshold value and cumlative energy deviation and preset tired
The comparison of product energy deviation threshold value sets different regulations speeds for generating set, can control the current power output of generating set
Power goes out the reality of generating set signified in activity of force and power dispatching instruction according to setting regulations speed trace scheduling instruction
The deviation for going out activity of force shown controls in energy-storage system adjustable extent, avoids that overcharging occurs in energy-storage system or over-discharge shows
As, guarantee the energy balance in energy-storage system During Process of Long-term Operation, meanwhile, the adjusting pressure of generating set is reduced, power generation is reduced
Unit equipment service wear and energy consumption can also lack energy-storage system information, power dispatching branch prediction and priori knowledge
In the case of, realize that the coordination optimization of energy-storage system and generating set is run.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of method flow schematic diagram of control generating set power output provided by the embodiment of the present invention；
Fig. 2 is a kind of apparatus structure schematic diagram of control generating set power output provided by the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Firstly the need of explanation, heretofore described generating set can be any form of generating set, such as
Fired power generating unit, Wind turbines, Hydropower Unit or nuclear power unit etc..
Below to it is provided in an embodiment of the present invention it is a kind of control generating set power output method be introduced, as shown in Figure 1,
A kind of method of control generating set power output provided in an embodiment of the present invention, is applied to gen-set control system, the method
May include:
S101 receives the dispatch command for carrying indicated output power, and determines the current activity of force out of generating set；
It should be noted that carrying indicated output power P in the dispatch commandInstruction, that is, need electricity generation system to be provided out
Totality go out activity of force.The dispatch command can be the dispatch command directly from power grid, and being also possible to will be from the tune of power grid
After spending Command Resolution, the dispatch command of activity of force is totally gone out for electricity generation system, this is all reasonable.
Determine the current power output power P of generating setUnitMode can working as using any existing determining generating set
Preceding power output power PUnitMode, be not specifically limited herein.
S102, calculates the power deviation of the indicated output power and current activity of force out, and calculates current time hair
The cumlative energy deviation of motor group；
Specifically, power deviation PDeviationThe indicated output power P carried in=dispatch commandInstructionGenerating set it is current
Power output power PUnit；Cumlative energy deviation EDeviationFormula can be passed throughIt is calculated, wherein T is to work as
Preceding moment, t0To calculate start time.
Power deviation PDeviationThe size of value reacted generating set and currently contributed power PUnitIt is carried with dispatch command
Indicated output power PInstructionThe degree of difference, value are likely to occur greater than 0, are equal to 0, less than 0 three kinds situations.It is understood that
It is to work as PDeviationWhen greater than 0, illustrate that needing to be turned up the totality that electricity generation system is provided out goes out activity of force；Work as PDeviationWhen equal to 0, explanation
It does not need the totality that adjusting electricity generation system is provided out and goes out activity of force；Work as PDeviationWhen less than 0, illustrate to need to turn down electricity generation system to
The totality of outer offer goes out activity of force.
Cumlative energy deviation EDeviationFor from calculate start time t0, to the dispatch command in a period of time of current time T
The aggregate-value of the deviation for going out activity of force of the indicated output power and generating set of middle carrying, EDeviationReflect PDeviationFrom t0To T
A period of time in accumulative variation tendency.Due to indicated output power PInstructionChange over time, from calculate start time
t0, to the P in a period of time of current time TDeviationAnd change over time, therefore, cumlative energy deviation EDeviationValue
It is likely to occur and is greater than 0, be equal to 0, less than 0 three kinds situations.
S103 sets the generator according to the absolute value of the power deviation and the inclined absolute value of the difference of the cumlative energy
The regulations speed of group.
Specifically, can be with are as follows: judge whether the absolute value of the power deviation is greater than preset power deviation threshold value,
If so, executing step S104, otherwise, step S105 is executed；
It in order to guarantee the operation steady in a long-term of energy-storage system, does not overcharge or the danger of over-discharge, the preset function
Rate deviation threshold PThreshold valueThe power-handling capability of energy-storage system should be less than.
It preferably, can be by PThreshold valueIt is set slightly smaller than the power-handling capability of energy-storage system, for example, if the volume of energy-storage system
Determining performance number is 9MW, then can be by the PThreshold valueBe set as 7MW, in this way can under the precursor for guaranteeing energy-storage system safe operation,
The rapid adjustability for playing energy-storage system to the maximum extent, reduces the adjusting pressure of generating set as far as possible, reduces generating set
Equipment service wear and energy consumption.
The regulations speed of generating set is set as first rate by S104；
When judging the power deviation PDeviationAbsolute value be greater than preset power deviation threshold value PThreshold valueWhen, illustrate this
PDeviationThe power regulation limit of power that energy-storage system can be provided is had been over, is gone out so generating set is needed quickly to adjust it
Activity of force, to guarantee to be rapidly achieved the indicated output power carried in dispatch command.
Preferably, the regulations speed of generating set can be set as first rate V1, first rate V1For the power generation
The 2% of the rated energy of unit is per minute.It quickly regulator generator group can go out activity of force in this way, while avoid generating set
The abrasion of equipment operation and energy consumption are excessive.Certainly, first rate V1It can also be according to PDeviationActual numerical value be set as other
Value, can guarantee that the power output power regulation by generating set to indicated output power, is not specifically limited herein.
If it should be noted that P at this timeDeviationGreater than 0, then the regulations speed of generating set is set as first rate V1, and
According to regulations speed V1That generating set is turned up goes out activity of force；If PDeviationLess than 0, then the regulations speed of generating set is set as
First rate V1, and according to regulations speed V1That turns down generating set goes out activity of force.
S105, judges whether the inclined absolute value of the difference of the cumlative energy is greater than preset cumlative energy deviation threshold,
If so, executing step S107, otherwise, step S106 is executed；
When judging the power deviation PDeviationAbsolute value be not more than preset power deviation threshold value PThreshold valueWhen, explanation
The PDeviationIt is not above the power regulation limit of power that energy-storage system can be provided, in order to more accurately whether determine energy-storage system
In the presence of overcharging or the danger of over-discharge, can further be determined from cumlative energy misalignment angle.
Specifically, the operation steady in a long-term in order to guarantee energy-storage system, do not overcharge or the danger of over-discharge, this sets in advance
Fixed cumlative energy deviation threshold EThreshold valueThe rated energy value of energy-storage system should be less than, to guarantee to can be provided in energy-storage system
Energy-conditioning range in be adjusted.
Preferably, the preset cumlative energy deviation threshold EThreshold valueThe rated energy value of energy-storage system can be less than
1/2.When the energy that energy-storage system provides is 1/2 or so of its rated energy value, energy-storage system operates to optimum state, because
This is by the preset cumlative energy deviation threshold EThreshold valueThe 1/2 of the rated energy value of energy-storage system can be less than, it is ensured that
Energy-storage system is in optimal operational condition, steady operation.
It for example, can be by E if the rated energy value of energy-storage system is 4.5MWhThreshold valueIt is set as the volume of energy-storage system
Surely magnitude 30%, i.e. 1.2MWh.Can certainly according to the real account of energy-storage system surely magnitude by EThreshold valueIt is set as other numbers
Value, this is all reasonable.
The regulations speed of generating set is set as third speed by S106；
When judging cumlative energy deviation EDeviationAbsolute value be not more than preset cumlative energy deviation threshold EThreshold valueWhen,
Illustrate the EDeviationIt is not above the energy conditioning ability range that energy-storage system can be provided, at this point, can then set for generating set
One lesser regulations speed, i.e. third speed V3, third speed V3Less than first rate V1。
It preferably, can be by third speed V3It is set as 0, i.e., the activity of force that goes out of generating set is not adjusted, by
It can satisfy in the energy conditioning ability that energy-storage system at this time can be provided and indicate activity of force in dispatch command, because without right
The activity of force that goes out of generating set is adjusted, and reduces generator set device service wear and energy consumption to the greatest extent.
S107, judges whether the power deviation and the product of the cumlative energy deviation are greater than 0, if so, executing step
Otherwise rapid S108 executes step S109；
When judging cumlative energy deviation EDeviationAbsolute value be greater than preset cumlative energy deviation threshold EThreshold valueWhen, it says
The bright EDeviationIt has been more than preset cumlative energy deviation threshold EThreshold value, but due to EThreshold valueSetting be less than energy-storage system
Rated energy value, in order to further determine energy-storage system at this time with the presence or absence of overcharging or the danger of over-discharge, power can be carried out
Deviation PDeviationAnd cumlative energy deviation EDeviationProduct whether be greater than 0 judgement.
It should be noted that due to PDeviationAnd EDeviationHave greater than 0, is equal to 0, less than 0 three kinds situations, so PDeviationWith EDeviation's
Product also will appear greater than 0, be equal to 0, less than 0 three kinds situations.
The regulations speed of generating set is set as the second rate by S108；
The power deviation PDeviationAnd the cumlative energy deviation EDeviationProduct be greater than 0 when, for PDeviationWith EDeviationValue have
Following two situation:
The first situation: PDeviationAnd EDeviationRespectively less than 0, then the product of the two is greater than 0.
Specifically, PDeviationLess than 0, illustrate that needing to reduce the totality that electricity generation system is provided out at this time goes out activity of force；EDeviationIt is small
In 0, illustrate E at this timeDeviationIt has been more than preset cumlative energy deviation threshold EThreshold value, and PDeviationIn lasting reduction state, need
It constantly to reduce the totality that electricity generation system is provided out and go out activity of force, at this point, energy-storage system has the danger overcharged.
Second situation: PDeviationAnd EDeviationIt is all larger than 0, then the product of the two is greater than 0.
Specifically, PDeviationGreater than 0, illustrate that needing to be turned up the totality that electricity generation system is provided out at this time goes out activity of force；EDeviationGreatly
In 0, illustrate E at this timeDeviationIt has been more than preset cumlative energy deviation threshold EThreshold value, and PDeviationIn lasting enlarging state, need
The totality that electricity generation system is provided out constantly is turned up and goes out activity of force, at this point, there are the danger of over-discharge for energy-storage system.
Therefore, in above-mentioned two situations, be required to regulator generator group goes out activity of force, and energy-storage system is avoided to occur
It fills or over-discharge is dangerous, the regulations speed of generating set can be set as to the second rate V2.Due to P at this timeDeviationAbsolute value be less than
PThreshold value, do not need with first rate V1Quick regulator generator group goes out activity of force, so second rate V2It can be less than above-mentioned
First rate V1, it is greater than above-mentioned third speed V3, can go out activity of force guaranteeing totality that electricity generation system is provided out in this way and reach
While indicating processing power, the abrasion and energy consumption of generating set operation are reduced to the greatest extent.
Preferably, second rate V2It can be first rate V11/2, be not limited thereto certainly, can make power generation be
The totality being provided out of uniting goes out activity of force and meets the needs of indicated output power, is less than first rate V1Arbitrary velocity be all can
Capable.
The regulations speed of generating set is set as third speed by S109；
It should be noted that due to having determined that cumlative energy deviation EDeviationAbsolute value be greater than preset accumulation
Energy deviation threshold value EThreshold value, so cumlative energy deviation E is not present at this timeDeviationThe case where equal to 0.
Therefore, as power deviation PDeviationAnd cumlative energy deviation EDeviationProduct be not more than 0 when, for PDeviationWith EDeviation's
Value has following three kinds of situations:
The first situation: PDeviationLess than 0, EDeviationGreater than 0, then the product of the two is less than 0.
Specifically, PDeviationLess than 0, illustrate that needing to reduce the totality that electricity generation system is provided out at this time goes out activity of force；EDeviationGreatly
In 0, illustrate E at this timeDeviationIt has been more than preset cumlative energy deviation threshold EThreshold value, but PDeviationIn lasting enlarging state, need
It reduces the totality that electricity generation system is provided out and goes out the degree of activity of force in lasting reduction, at this point, there is no overcharge energy-storage system
Danger.
Second situation: PDeviationGreater than 0, EDeviationLess than 0, then the product of the two is less than 0.
Specifically, PDeviationGreater than 0, illustrate that needing to be turned up the totality that electricity generation system is provided out at this time goes out activity of force；EDeviationIt is small
In 0, illustrate E at this timeDeviationIt has been more than preset cumlative energy deviation threshold EThreshold value, but PDeviationIn lasting reduction state, need
The totality that electricity generation system is provided out is turned up and goes out the degree of activity of force in lasting reduction, at this point, over-discharge is not present in energy-storage system
Danger.
The third situation: PDeviationEqual to 0, EDeviationLess than 0 or it is greater than 0, then the product of the two is equal to 0.
Specifically, PDeviationEqual to 0, no matter EDeviationLess than 0 or it is greater than 0, all illustrates not need at this time to adjust electricity generation system outside
The totality of offer goes out activity of force, and certain energy-storage system will not occur overcharging or over-discharge is dangerous.
Therefore, at above-mentioned three kinds, energy-storage system is not in overcharge or over-discharge is dangerous, can be by generating set
Regulations speed be set as third speed V3.Third speed V3It can be set as 0, i.e., need not go out activity of force to generating set
It is adjusted, reduces generator set device service wear and energy consumption to the greatest extent.
As it can be seen that using a kind of method of control generating set power output provided by the invention, gen-set control system is received
Power dispatching instruction, and after the activity of force out of determining generating set currently, according to power deviation and preset power deviation
The comparison of threshold value and cumlative energy deviation are compared with preset cumlative energy deviation threshold, not for generating set setting
With regulations speed, the reality of generating set can be gone out to the inclined of activity of force out indicated in activity of force and power dispatching instruction
Difference control avoids energy-storage system from occurring overcharging or the phenomenon that over-discharge, guarantees that energy-storage system is long in energy-storage system adjustable extent
Energy balance in phase operational process, meanwhile, reduce the adjusting pressure of generating set, reduce generator set device service wear and
Energy consumption can also realize energy-storage system in the case where lacking energy-storage system information, power dispatching branch prediction and priori knowledge
It is run with the coordination optimization of generating set.
Embodiment two
As shown in Fig. 2, for a kind of structural schematic diagram of the device of control generating set power output provided in an embodiment of the present invention,
The device is used to execute above-mentioned method shown in FIG. 1, the apparatus may include:
Dispatch command receiving module 210 for receiving the dispatch command for carrying indicated output power, and determines generating set
Currently go out activity of force；
Deviation computing module 220, the power deviation for calculating the indicated output power with currently going out activity of force, and
Calculate the cumlative energy deviation of current time generating set；
Rate setting module 230, for according to the absolute of the absolute value of the power deviation and the cumlative energy deviation
Value sets the regulations speed of the generating set.
Specifically, the rate setting module 230 may include:
First processing units 240 are greater than preset power deviation threshold value for the absolute value in the power deviation
When, the regulations speed of generating set is set as first rate；
Second judgment unit 250 is not more than preset power deviation threshold for the absolute value in the power deviation
When value, the inclined absolute value of the difference of the cumlative energy is compared with preset cumlative energy deviation threshold；
The second processing unit 260, for being not more than preset accumulation energy in the inclined absolute value of the difference of the cumlative energy
Deviation threshold is measured, the regulations speed of generating set is set as third speed；
Third judging unit 270, for being greater than preset cumlative energy in the inclined absolute value of the difference of the cumlative energy
When deviation threshold, judge whether the power deviation and the product of the cumlative energy deviation are greater than 0；
Third processing unit 280, for inciting somebody to action when the product of the power deviation and the cumlative energy deviation is greater than 0
The regulations speed of generating set is set as the second rate；
Fourth processing unit 290, for the product of the power deviation and the cumlative energy deviation be not more than 0 when,
The regulations speed of generating set is then set as third speed；
Wherein, which is greater than the second rate, which is greater than third speed.
Preferably, the calculation formula of the cumlative energy deviation can be with are as follows:
Wherein, EDeviationFor the cumlative energy deviation, PDeviationFor the power deviation, T is the current time, t0Start to calculate
Moment.
Preferably, it is the chronic energy balance for guaranteeing energy-storage system, energy-storage system is avoided to occur overcharging or the danger of over-discharge,
The preset power deviation threshold value PThreshold valueLess than the power-handling capability of energy-storage system；The preset cumlative energy deviation
Threshold value EThreshold valueLess than the 1/2 of the rated energy value of energy-storage system.
Preferably, first rate V12% for the rated energy of generating set is per minute；
Second rate V2For first rate V11/2；
Third speed V3It is 0.
As it can be seen that using a kind of device of control generating set power output provided by the invention, gen-set control system is received
Power dispatching instruction, and after the activity of force out of determining generating set currently, according to power deviation and preset power deviation
The comparison of threshold value and cumlative energy deviation are compared with preset cumlative energy deviation threshold, not for generating set setting
With regulations speed, the reality of generating set can be gone out to the inclined of activity of force out indicated in activity of force and power dispatching instruction
Difference control avoids energy-storage system from occurring overcharging or the phenomenon that over-discharge, guarantees that energy-storage system is long in energy-storage system adjustable extent
Energy balance in phase operational process, meanwhile, reduce the adjusting pressure of generating set, reduce generator set device service wear and
Energy consumption can also realize energy-storage system in the case where lacking energy-storage system information, power dispatching branch prediction and priori knowledge
It is run with the coordination optimization of generating set.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
Those of ordinary skill in the art will appreciate that all or part of the steps in realization above method embodiment is can
It is completed with instructing relevant hardware by program, the program can store in computer-readable storage medium,
The storage medium designated herein obtained, such as: ROM/RAM, magnetic disk, CD.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (12)
1. a kind of method of control generating set power output, which is characterized in that be applied to gen-set control system, the method packet
It includes:
The dispatch command for carrying indicated output power is received, and determines the current activity of force out of generating set；
The power deviation of the indicated output power and current activity of force out is calculated, and calculates the tired of current time generating set
Product energy deviation；
Judge whether the absolute value of the power deviation is greater than preset power deviation threshold value；
If it is, the regulations speed of generating set is set as first rate；
If it is not, then judging whether the inclined absolute value of the difference of the cumlative energy is greater than preset cumlative energy deviation threshold；
If the inclined absolute value of the difference of cumlative energy is not more than preset cumlative energy deviation threshold, by generating set
Regulations speed be set as third speed；
If the inclined absolute value of the difference of cumlative energy is greater than preset cumlative energy deviation threshold, according to the power
The product of deviation and the cumlative energy deviation sets the regulations speed of the generating set；
Wherein, the first rate is greater than third speed.
2. the method as described in claim 1, which is characterized in that the preset power deviation threshold value is less than energy-storage system
Power-handling capability.
3. the method as described in claim 1, which is characterized in that the preset cumlative energy deviation threshold is less than energy storage
The 1/2 of the rated energy value of system.
4. the method as described in claim 1, which is characterized in that described according to the power deviation and the cumlative energy deviation
Product set the regulations speed of the generating set, comprising:
Judge whether the power deviation and the product of the cumlative energy deviation are greater than 0；
If it is greater than 0, then the regulations speed of generating set is set as the second rate；
If being not more than 0, the regulations speed of generating set is set as third speed；
Wherein, the first rate is greater than the second rate, and second rate is greater than third speed.
5. method as claimed in claim 4, which is characterized in that the first rate is the rated energy of the generating set
2% per minute；
Second rate is the 1/2 of the first rate；
The third speed is 0.
6. the method as described in claim 1, which is characterized in that the calculation formula of the cumlative energy deviation are as follows:
Wherein, EDeviationFor the cumlative energy deviation, PDeviationFor the power deviation, T is the current time, t0Start to calculate
Moment.
7. a kind of device of control generating set power output, which is characterized in that be applied to gen-set control system, comprising:
Dispatch command receiving module for receiving the dispatch command for carrying indicated output power, and determines the current of generating set
Activity of force out；
Deviation computing module, the power deviation for calculating the indicated output power with currently going out activity of force, and calculating are worked as
The cumlative energy deviation of preceding moment generating set；
Rate setting module includes:
First judging unit, for judging whether the absolute value of the power deviation is greater than preset power deviation threshold value；
First processing units will be sent out when being greater than preset power deviation threshold value for the absolute value in the power deviation
The regulations speed of motor group is set as first rate；
Second judgment unit is sentenced when being not more than preset power deviation threshold value for the absolute value in the power deviation
Whether the inclined absolute value of the difference of the cumlative energy of breaking is greater than preset cumlative energy deviation threshold；
The second processing unit, for being not more than preset cumlative energy deviation threshold in the inclined absolute value of the difference of the cumlative energy
Value, is set as third speed for the regulations speed of generating set；
Third judging unit, for being greater than preset cumlative energy deviation threshold in the inclined absolute value of the difference of the cumlative energy
When, the regulations speed of the generating set is set according to the product of the power deviation and the cumlative energy deviation；
Wherein, the first rate is greater than third speed.
8. device as claimed in claim 7, which is characterized in that the preset power deviation threshold value is less than energy-storage system
Power-handling capability.
9. device as claimed in claim 7, which is characterized in that the preset cumlative energy deviation threshold is less than energy storage
The 1/2 of the rated energy value of system.
10. device as claimed in claim 7, which is characterized in that the third judging unit is specifically used for:
Judge whether the power deviation and the product of the cumlative energy deviation are greater than 0；
Correspondingly, the rate setting module further include:
Third processing unit, for the product of the power deviation and the cumlative energy deviation be greater than 0 when, by generating set
Regulations speed be set as the second rate；
Fourth processing unit, for that when the product of the power deviation and the cumlative energy deviation is not more than 0, then will generate electricity
The regulations speed of unit is set as third speed；
Wherein, the first rate is greater than the second rate, and second rate is greater than third speed.
11. device as claimed in claim 10, which is characterized in that the first rate is the rated energy of the generating set
2% per minute；
Second rate is the 1/2 of the first rate；
The third speed is 0.
12. device as claimed in claim 7, which is characterized in that the calculation formula of the cumlative energy deviation are as follows:
Wherein, EDeviationFor the cumlative energy deviation, PDeviationFor the power deviation, T is the current time, t0Start to calculate
Moment.
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Application publication date: 20171208 Assignee: Beijing Haibo Sichuang Technology Co.,Ltd. Assignor: RAY POWER SYSTEMS CO.,LTD. Contract record no.: X2022990000842 Denomination of invention: A method and device for controlling the output of generator sets Granted publication date: 20191115 License type: Common License Record date: 20221028 |
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