CN107872066A - The control method and device that a kind of power network energy-storage system is contributed - Google Patents
The control method and device that a kind of power network energy-storage system is contributed Download PDFInfo
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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Abstract
The embodiment of the invention discloses the control method and device that a kind of power network energy-storage system is contributed, method includes：The present charge state value of energy-storage system is determined, the operational mode of energy-storage system is set according to present charge state value, sends operational mode to power network dispatching system, so that：Power network dispatching system receives operational mode, and generates target power regulating command according to operational mode, and energy-storage system controller receives target power regulating command, and controls energy-storage system according to target power regulating command power output.Because power network dispatching system generates target power regulating command according to the operational mode of energy-storage system in this programme, so output regulatory demand quickly repeatedly can be converted into the regulatory demand that unidirectional duration is long and conversion times are few, while target power regulating command is met, the service life of energy-storage system is greatly prolonged, reduces operating cost.
Description
Technical field
The present invention relates to technical field of electric power, the control method contributed more particularly to a kind of power network energy-storage system and dress
Put.
Background technology
With the development of power technology, electric energy becomes the energy essential in people's daily life.Power network is sent out at present
Electric system mainly includes thermal power generation, hydroelectric generation and nuclear energy power generation and grid-connected power generation system etc..In grid generation system
In, refer to respond Automatic Generation Control (Automatic Generation Control, AGC) scheduling with ensureing fast and stable
Make, the demand of quick regulation resource is increasingly increased in grid generation system, energy-storage system is as separately adjustable unit or work
Increasingly participated in for generating set auxiliary adjustment unit among power network AGC management and running.
The rapidity and accuracy that energy-storage system is adjusted due to its power output, in independent or auxiliary fired power generating unit response electricity
The application of net AGC frequency modulation, wind-powered electricity generation/photovoltaic power output are smoothly applied, wind-powered electricity generation/photovoltaic prediction power tracking, responsive electricity grid instruct into
The fields such as row Load Regulation are widely used.In such applications, energy-storage system is used for quick response power network AGC dispatch commands, or
Offset electricity generation unit real output and the deviation of dispatching of power netwoks instruction, or offset electricity generation unit real output and prediction
And the deviation between setting output.
The operation characteristic of energy-storage system show as it is quick, repeatedly, frequent and small depth (Depth of Discharge,
DOD charge and discharge) is electrically operated.For example, in the application of power network AGC frequency modulation, the charge and discharge cycles that energy-storage system was carried out in one day are secondary
Number may be up to hundreds of times to thousands of times, and the DOD of charge and discharge cycles may be only in 10%-30% every time, and this is to energy-storage system
Service life bring huge challenge, cause the service life of existing energy-storage system short, operating cost is high.Particularly with energy type
For battery energy storage system, small DOD charge and discharge cycles hundreds of time daily make energy-storage system at 1-2 week interior just rapid failure.
The content of the invention
The embodiment of the invention discloses the control method and device that a kind of power network energy-storage system is contributed, to solve existing energy storage
The problem of system service life is short, and operating cost is high.Technical scheme is as follows：
In a first aspect, the embodiments of the invention provide the control method that a kind of power network energy-storage system is contributed, applied to energy storage
System controller, methods described include：
The present charge state value of energy-storage system is determined, wherein, the present charge state is that the energy-storage system is current
Dump energy and the ratio of rated energy capacity；
The operational mode of the energy-storage system is set according to the present charge state value；
The operational mode is sent to power network dispatching system, so that：The power network dispatching system receives the operational mode,
And target power regulating command is generated according to the operational mode, the target power regulating command is sent to the energy storage system
System controller, wherein, the target power regulating command carries power generating value；
The target power regulating command that the power network dispatching system is sent is received, controls the energy-storage system according to institute
State the power generating value power output entrained by target power regulating command.
Optionally, before the step of present charge state value of the determination energy-storage system, methods described also includes：
In the operation initial time of the energy-storage system, according to default initial pattern set-up mode, the energy storage is set
The operational mode of system.
Optionally, it is described according to default initial pattern set-up mode, set the step of the operational mode of the energy-storage system
Suddenly include：
When the initial state of charge value of the energy-storage system is not higher than operation lower limit, the operation of the energy-storage system is set
Pattern is simple charge mode；
When the initial state of charge value of the energy-storage system is not less than the operation upper limit, the operation of the energy-storage system is set
Pattern is simple discharge mode；
When the initial state of charge value of the energy-storage system is less than the operation upper limit and is higher than the operation lower limit, if
The operational mode of the fixed energy-storage system is simple charge mode or simple discharge mode；
Wherein, the initial state of charge value is dump energy and specified energy of the energy-storage system in operation initial time
The ratio of capacity is measured, the operation upper limit is the energy-storage system to preset the maximum state of charge value of rated power charging, institute
It is the minimum state of charge value that the energy-storage system is discharged with default rated power to state operation lower limit, the simple charge mode pair
The adjustable output scope for the energy-storage system answered is [- P, 0], the energy-storage system corresponding to the simple discharge mode
Adjustable output scope is [0, P], and P is the default rated power of the energy-storage system.
Optionally, in the operation initial time of the energy-storage system, according to default initial pattern set-up mode, institute is set
Before the step of stating the operational mode of energy-storage system, methods described also includes：
According to the operation initial time and the time relationship of power network peak value operation period and power network valley operation period, adjust
The initial state of charge value of the whole energy-storage system.
Optionally, before the step of present charge state value of the determination energy-storage system, methods described also includes：
In the operation initial time of the energy-storage system, the period is run according to power network peak value and power network valley runs the period
Time span sets the time constant of the energy-storage system；
According to the time constant, the default rated power of the energy-storage system is set.
Optionally, it is described when the initial state of charge value of the energy-storage system not less than the operation lower limit and is not higher than institute
When stating the operation upper limit, set the operational mode of the energy-storage system and wrap as the step of simple charge mode or simple discharge mode
Include：
If the operation initial time be in power network peak value and runs the period, set the operational mode of the energy-storage system as
The simple discharge mode；
If the operation initial time be in power network valley and runs the period, set the operational mode of the energy-storage system as
The simple charge mode.
Optionally, the initial launch pattern according to the present charge state value and energy-storage system set in advance is set
The step of operational mode of the fixed energy-storage system, includes：
When the present charge state value is not higher than operation lower limit, then the operational mode of the energy-storage system is set as institute
State simple charge mode；
When the present charge state value is not less than the operation upper limit, then the operational mode of the energy-storage system is set as institute
State simple discharge mode；
When the present charge state value is less than the operation upper limit and is higher than the operation lower limit, then the storage is kept
The operational mode of energy system is constant.
Optionally, methods described also includes：
When the operational mode of the energy-storage system is the simple charge mode, judge that the present charge state value is
It is no interior in (the operation upper limit-Δ, run the upper limit+Δ)；
If the present charge state value is not in (the operation upper limit-Δ, run the upper limit+Δ), then described work as is judged
Whether preceding state-of-charge value is not less than the operation upper limit+Δ；
If the present charge state value switches the operational mode of the energy-storage system not less than the upper limit+Δ is run
For the simple discharge mode；
If the present charge state value, less than the operation upper limit+Δ, the operational mode for keeping the energy-storage system is
The simple charge mode；
If the present charge state value is in (the operation upper limit-Δ, run the upper limit+Δ), then the target is judged
Whether the power generating value entrained by power adjustment instruction is zero；
If zero, then the operational mode for switching the energy-storage system is the simple discharge mode；
If be not zero, the operational mode for keeping the energy-storage system is the simple charge mode；
When the operational mode of the energy-storage system is the simple discharge mode, whether the present charge state is judged
In (operation lower limit-Δ, run lower limit+Δ)；
If the present charge state value is not in (operation lower limit-Δ, run lower limit+Δ), then described work as is judged
Whether preceding state-of-charge value is not higher than operation lower limit-Δ；
If the present charge state value switches the operational mode of the energy-storage system not higher than lower limit-Δ is run
For the simple charge mode；
If the present charge state value, higher than operation lower limit-Δ, the operational mode for keeping the energy-storage system is
The simple discharge mode；
If the present charge state value is in (operation lower limit-Δ, run lower limit+Δ), then the target is judged
Whether the power generating value entrained by power adjustment instruction is zero；
If zero, then the operational mode for switching the energy-storage system is the simple charge mode；
If be not zero, the operational mode for keeping the energy-storage system is the simple discharge mode；
Wherein, the energy-storage system operational mode impulsive Δ is 3%-5%.
Optionally, the power network dispatching system receives the operational mode, and generates target work(according to the operational mode
The step of rate regulating command, includes：
The power network dispatching system receives the operational mode, and sets the power generating value corresponding to the operational mode
In the range of the adjustable output of the energy-storage system, the target power regulating command is generated.
Second aspect, the embodiment of the present invention additionally provides the control device that a kind of power network energy-storage system is contributed, applied to storage
Energy system controller, described device include：
Present charge state value determining module, for determining the present charge state value of energy-storage system, wherein, it is described current
Charged state is the energy-storage system current remaining and the ratio of rated energy capacity；
Operational mode setting module, for setting the operation mould of the energy-storage system according to the present charge state value
Formula；
Target power regulating command generation module, for sending the operational mode to power network dispatching system, so that：It is described
Power network dispatching system receives the operational mode, and generates target power regulating command according to the operational mode, by the mesh
Mark power adjustment instruction is sent to the energy-storage system controller, wherein, the target power regulating command carries power generating value；
Power output module, the target power regulating command sent for receiving the power network dispatching system, control
The energy-storage system is according to the power generating value power output entrained by the target power regulating command.
Optionally, described device also includes initial launch pattern setting module, is used for：
Before the present charge state value for determining energy-storage system, in the operation initial time of the energy-storage system, according to default
Initial pattern set-up mode, set the operational mode of the energy-storage system.
Optionally, the initial launch pattern setting module is specifically used for：
When the initial state of charge value of the energy-storage system is not higher than operation lower limit, the operation of the energy-storage system is set
Pattern is simple charge mode；
When the initial state of charge value of the energy-storage system is not less than the operation upper limit, the operation of the energy-storage system is set
Pattern is simple discharge mode；
When the initial state of charge value of the energy-storage system is less than the operation upper limit and is higher than the operation lower limit, if
The operational mode of the fixed energy-storage system is simple charge mode or simple discharge mode；
Wherein, the initial state of charge value is dump energy and specified energy of the energy-storage system in operation initial time
The ratio of capacity is measured, the operation upper limit is the energy-storage system to preset the maximum state of charge value of rated power charging, institute
It is the minimum state of charge value that the energy-storage system is discharged with default rated power to state operation lower limit, the simple charge mode pair
The adjustable output scope for the energy-storage system answered is [- P, 0], the energy-storage system corresponding to the simple discharge mode
Adjustable output scope is [0, P], and P is the default rated power of the energy-storage system.
Optionally, described device also includes initial state of charge value adjusting module, is used for：
In the operation initial time of the energy-storage system, according to default initial pattern set-up mode, the energy storage is set
Before the operational mode of system, the period is run with power network peak value according to the operation initial time and power network valley runs the period
Time relationship, adjust the initial state of charge value of the energy-storage system.
Optionally, described device also includes time constant setting module, is used for：
In the operation initial time of the energy-storage system, the period is run according to power network peak value and power network valley runs the period
Time span sets the time constant of the energy-storage system；
According to the time constant, the default rated power of the energy-storage system is set.
Optionally, the initial launch pattern setting module includes：
First initial setup unit, for when the energy-storage system initial state of charge value less than it is described operation the upper limit and
During higher than the operation lower limit, if the operation initial time is in the power network peak value operation period, the energy storage system is set
The operational mode of system is the simple discharge mode；
Second initial setup unit, for when the energy-storage system initial state of charge value less than it is described operation the upper limit and
During higher than the operation lower limit, if the operation initial time is in the power network valley operation period, the energy storage system is set
The operational mode of system is the simple charge mode.
Optionally, the operational mode setting module includes：
First current setup unit, for when the present charge state value is not higher than operation lower limit, setting the storage
The operational mode of energy system is the simple charge mode；
Second current setup unit, for when the present charge state value is not less than the operation upper limit, setting the storage
The operational mode of energy system is the simple discharge mode；
3rd current setup unit, for less than the operation upper limit and being higher than the fortune when the present charge state value
During row lower limit, then keep the operational mode of the energy-storage system constant.
Optionally, described device also includes：
First judge module, for when the operational mode of the energy-storage system is the simple charge mode, judging institute
Present charge state value is stated whether in (the operation upper limit-Δ, run the upper limit+Δ)；
Second judge module, for being not at when the present charge state value (the operation upper limit-Δ, run the upper limit+Δ)
When interior, judge the present charge state value whether not less than the operation upper limit+Δ；
First execution module, for when the present charge state value is not less than the operation upper limit+Δ, switching the energy storage
The operational mode of system is the simple discharge mode；
Second execution module, for when the present charge state value is less than the operation upper limit+Δ, keeping the energy storage system
The operational mode of system is the simple charge mode；
3rd judge module, for being in when the present charge state value in (the operation upper limit-Δ, run the upper limit+Δ)
When, judge whether the power generating value entrained by the target power regulating command is zero；
3rd execution module, for when the power generating value entrained by the target power regulating command is zero, described in switching
The operational mode of energy-storage system is the simple discharge mode；
4th execution module, for when the power generating value entrained by the target power regulating command is not zero, keeping institute
The operational mode for stating energy-storage system is the simple charge mode；
4th judge module, for when the operational mode of the energy-storage system is the simple discharge mode, judging institute
Present charge state value is stated whether in (operation lower limit-Δ, run lower limit+Δ)；
5th judge module, for being not at when the present charge state value (operation lower limit-Δ, run lower limit+Δ)
When interior, judge the present charge state value whether not higher than operation lower limit-Δ；
5th execution module, for when the present charge state value is not higher than operation lower limit-Δ, switching the energy storage
The operational mode of system is the simple charge mode；
6th execution module, for when the present charge state value is higher than operation lower limit-Δ, keeping the energy storage system
The operational mode of system is the simple discharge mode；
6th judge module, for being in when the present charge state value in { operation lower limit-Δ, run lower limit+Δ }
When, judge whether the power generating value entrained by the target power regulating command is zero；
7th execution module, for when the power generating value entrained by the target power regulating command is zero, described in switching
The operational mode of energy-storage system is the simple charge mode；
8th execution module, for when the power generating value entrained by the target power regulating command is not zero, keeping institute
The operational mode for stating energy-storage system is the simple discharge mode；
Wherein, the energy-storage system operational mode impulsive Δ is 3%-5%.
Optionally, the target power regulating command generation module is specifically used for：
The operational mode is sent to power network dispatching system, so that：The power network dispatching system receives the operational mode,
And the power generating value is set in the range of the adjustable output of the energy-storage system corresponding to the operational mode, generate the mesh
Power adjustment instruction is marked, the target power regulating command is sent to the energy-storage system controller, wherein, the target work(
Rate regulating command carries power generating value.
In this programme, energy-storage system controller determines the present charge state value of energy-storage system first, according to current charging
State value sets the operational mode of energy-storage system, then sends operational mode to power network dispatching system, so that：Power network dispatching system
Operational mode is received, and target power regulating command is generated according to operational mode, energy-storage system controller receives dispatching of power netwoks system
The target power regulating command that system is sent, and control energy-storage system to be exported according to the power generating value entrained by target power regulating command
Power.Because energy-storage system controller sets operational mode according to present charge state value and initial launch pattern in this programme,
And then power network dispatching system is generated target power regulating command according to the operational mode of energy-storage system, by quickly repeatedly
Output regulatory demand is converted into the regulatory demand that unidirectional duration is long and conversion times are few, is meeting target power regulation
While instruction, the service life of energy-storage system is greatly prolonged, reduces operating cost.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart for the control method that a kind of power network energy-storage system provided in an embodiment of the present invention is contributed；
Fig. 2 (a) uses existing power network energy-storage system in being applied for a kind of power network AGC frequency modulation provided in an embodiment of the present invention
Energy-storage system output schematic diagram corresponding to the control method of output；
Fig. 2 (b) is to use power network energy storage system provided in an embodiment of the present invention in the power network AGC frequency modulation application shown in Fig. 2 (a)
Energy-storage system output schematic diagram corresponding to the control method that system is contributed；
Fig. 3 is the structural representation for the control device that a kind of power network energy-storage system provided in an embodiment of the present invention is contributed.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
In order to extend the service life of energy-storage system, while energy-storage system operating cost is reduced, the embodiment of the present invention provides
The control method and device that a kind of power network energy-storage system is contributed.
Firstly the need of explanation, introduce what a kind of power network energy-storage system provided in an embodiment of the present invention was contributed for convenience
Control method and device, herein, energy-storage system to power network feed out electric energy when, i.e., energy storage system discharges when, define energy storage system
Power output of uniting is just；Energy-storage system from power network absorb electric energy when, i.e., energy-storage system charge when, define energy-storage system power output
It is negative.
The control method that a kind of power network energy-storage system provided first below the embodiment of the present invention is contributed is introduced.
As shown in figure 1, the control method that a kind of power network energy-storage system is contributed, comprises the following steps：
S101, determine the present charge state value of energy-storage system；
Specifically, the present charge state is energy-storage system current remaining and the ratio of rated energy capacity.Energy storage
System controller can determine the current charging shape of energy-storage system according to energy-storage system current remaining and rated energy capacity
State value, for example, energy-storage system current remaining is 40MWh (megawatt hour), the rated energy capacity of energy-storage system is
100MWh, then the present charge state value of energy-storage system is 40/100=40%.
S102, the operational mode of the energy-storage system is set according to the present charge state value；
, can be according to the present charge state after energy-storage system controller determines the present charge state value of energy-storage system
The operational mode of value setting energy-storage system.Because the present charge state value of energy-storage system characterizes, energy-storage system is current to be filled
Discharge capability and actual charging and discharging state, therefore the operational mode for setting energy-storage system in such a way is adopted, can be according to storage
Can system actual charging and discharging state and can charging and discharging capabilities set the operational mode of energy-storage system, and then by quickly repeatedly
Output regulatory demand is converted into the regulatory demand that unidirectional duration is long and conversion times are few, while avoids energy-storage system from going out
Now overcharge or cross the danger put and influence the service life of energy-storage system.
It should be noted that initial time is run in the initial time that energy-storage system puts into operation, can be according to energy storage
System sets the operational mode of energy-storage system in the initial state of charge value of operation initial time, and specific setting means can wrap
Include：
When the initial state of charge value of the energy-storage system is not higher than (being less than) operation lower limit, the energy-storage system is set
Operational mode be simple charge mode；
When the initial state of charge value of the energy-storage system is not less than (being higher than) operation upper limit, the energy-storage system is set
Operational mode be simple discharge mode；
When the initial state of charge value of the energy-storage system is less than the operation upper limit and is higher than the operation lower limit, if
The operational mode of the fixed energy-storage system is simple charge mode or simple discharge mode.
It should be noted that the above-mentioned operation upper limit is the maximum state of charge that energy-storage system is charged with default rated power
Value.It is understood that energy-storage system is as a kind of equipment for providing electric energy, in actual applications, the maximum of its general charging
State-of-charge value will not be 100%, can so avoid energy-storage system from overcharging and reduce service life, so energy-storage system
There can be one to preset the maximum state of charge value of rated power charging, that is to say, that the operation upper limit is consolidated for energy-storage system
There is attribute, the operation upper limit of different types of energy-storage system is different, such as may be 80%, 90% etc..
Accordingly, above-mentioned operation lower limit is the energy-storage system to preset the minimum state of charge value of rated power electric discharge.
Minimum state of charge value of its general electric discharge also will not be 0%, and the operation lower limit is also the build-in attribute of energy-storage system, inhomogeneity
The operation lower limit of the energy-storage system of type is also different, such as may be 15%, 20% etc..
Further, above-mentioned initial state of charge value is dump energy and volume of the energy-storage system in operation initial time
Determine the ratio of energy capacity, for example, energy-storage system is 55MWh in the dump energy of operation initial time, the volume of energy-storage system
It is 100MWh to determine energy capacity, then the present charge state value of energy-storage system is 55/100=55%.
When energy-storage system controller judges the initial state of charge value of energy-storage system not higher than operation lower limit, for example,
The initial state of charge value of energy-storage system is 10%, and operation lower limit is 20%, now, illustrates energy-storage system in operation initial time
Dump energy it is fewer, it is allowed to the electricity of charging is more, that is, chargeable ability is fine, then can be to set energy storage system
The operational mode of system is simple charge mode, that is, setting energy-storage system absorbs electricity from power network merely, avoids energy-storage system
Carry out quick output regulation repeatedly.Wherein, the adjustable output scope of energy-storage system corresponding to the simple charge mode for [-
P, 0], that is, energy-storage system charge power can be between [0, P] a value, P is the default specified work(of energy-storage system
Rate.
When judging the current initial state of charge value of energy-storage system not less than the operation upper limit, for example, energy-storage system
Initial state of charge value is 90%, and the operation upper limit is 85%, now, illustrates dump energy of the energy-storage system in operation initial time
Compare more, it is allowed to the electricity of electric discharge is more, that is, can discharge capability it is fine, then can be to set the operation mould of energy-storage system
Formula is simple discharge mode, that is, setting energy-storage system feeds out electricity to power network merely, avoids energy-storage system from carrying out quick anti-
Multiple output regulation.Wherein, the adjustable output scope of energy-storage system corresponding to the simple discharge mode is [0, P], that is,
Can be between [0, P] one value of the discharge power of energy-storage system.
When judging the initial state of charge value of energy-storage system less than the above-mentioned operation upper limit and being higher than above-mentioned operation lower limit,
Such as the initial state of charge value of energy-storage system is 50%, the operation upper limit is 85%, and operation lower limit is 20%, now, illustrates storage
Can system it is more moderate in the dump energy of operation initial time, it is allowed to the electricity of electric discharge or electric discharge difference is not very big, that is,
Now energy-storage system have it is certain can discharge capability and chargeable ability, then can be to set the operational mode of energy-storage system
For one kind in simple charge mode, simple discharge mode.
Further, when the initial state of charge value for judging energy-storage system is less than the above-mentioned operation upper limit and is higher than above-mentioned fortune
During row lower limit, the operation period of power network according to corresponding to operation initial time the operational mode of energy-storage system can also be entered to advance
The setting of one step.
Specifically, if operation initial time, which be in power network peak value, runs the period, then can be to set energy-storage system
Operational mode is simple discharge mode；
If current time is in the power network valley operation period, then can be to set the operational mode of energy-storage system to be single
Pure charge mode.
It is understood that if operation initial time is in the power network peak value operation period, illustrate to run initial time electricity
The demand electricity of net is big, then can be to set the operational mode of energy-storage system as simple discharge mode, with preferably for power network
Electric energy is provided.Similarly, if operation initial time is in the power network valley operation period, the need for running initial time power network are illustrated
Ask electricity small, then can be to set the operational mode of energy-storage system as simple charge mode, to absorb electric energy from power network to store up
Can system charging.
It should be noted that running initial time in energy-storage system, energy-storage system controller can be transported according to power network peak value
The time constant of the time span setting energy-storage system of row period and power network valley operation period, and then according to the time constant,
Set the default rated power of energy-storage system.It is understood that time constant and default rated power due to energy-storage system
Product be equal to energy-storage system rated energy capacity, if so set energy-storage system time constant be 4 hours, energy storage system
The rated energy capacity of system is 100MWh, then the default rated power of energy-storage system is 100/4=25MW.
In practical application, due to energy-storage system corresponding to above-mentioned simple charge mode adjustable output scope for [- P,
0], the adjustable output scope of energy-storage system corresponding to simple discharge mode is [0, P], then in general, can be recognized
Size for the average value of energy-storage system power output is P/2, then energy-storage system from above-mentioned operation lower limit start to charge up until
The operation upper limit of energy-storage system can lasting duration, or since the above-mentioned operation upper limit electric discharge until the operation of energy-storage system
Lower limit can lasting duration be each about 2 times of time constant, so in order to ensure that energy-storage system runs the period in power network peak value
Discharge condition can be remained, charged state can be remained in the power network valley operation period, typically can be by energy storage system
The time constant of system is arranged to half of time span of power network peak value operation period and power network valley operation period or so.So
The operational mode and power grid electric workload demand that energy-storage system can be made mutually are coordinated, while AGC dispatch command demands are met,
Meets the needs of power grid electric " peak load shifting ".
For example, the time span of power network peak value operation period and power network valley operation period are generally 8 hours, then energy storage
System controller so can as far as possible ensure energy-storage system in electricity using the time constant for setting energy-storage system as 4-6 hours
The net peak value operation period is in simple discharge mode, and is in simple charge mode in the power network valley operation period, further subtracts
The conversion of few energy-storage system charge and discharge mode.
Further, before energy-storage system puts into operation, i.e., before energy-storage system runs initial time, energy-storage system control
Device processed can also be according to the time relationship between operation initial time and power network peak value operation period and valley operation period to above-mentioned
The initial state of charge value of energy-storage system is adjusted, and thereby may be ensured that energy-storage system is run after putting into operation with power network peak value
The electrical demand of period or valley operation period are engaged..
Specifically, if operation initial time runs the period close to or at power network peak value, due to being run in power network peak value
Period power network needs electricity big, feeds out electric energy so being generally required after energy-storage system puts into operation to power network, then now store up
Energy system controller can be with according to the time relationship between operation initial time and power network peak value operation period, control energy storage system
System is charged with small-power, makes the initial state of charge value of energy-storage system close to the above-mentioned operation upper limit or equal in above-mentioned operation
Limit, so after energy-storage system puts into operation can with ensure power network peak value operation the period in enough electricity are provided, and then
Energy-storage system is avoided the problem of putting occurred.For example, power network peak value runs the period for daily 7 when 15, the operation upper limit is
90%, operation lower limit is 10%, if time for putting into operation of energy-storage system is 7, then energy-storage system controller can be with
By way of small-power charging, the initial state of charge value of energy-storage system is being adjusted to operation before energy-storage system puts into operation
Limit.If the time that energy-storage system puts into operation be 9, then can with before energy-storage system puts into operation pass through small-power charge
Mode, the initial state of charge value of energy-storage system is adjusted to 70%.
Similarly, if operation initial time is close to or at the power network valley operation period, due to being run in power network valley
Period power network needs electricity small, absorbs electric energy so being generally required after energy-storage system puts into operation from power network, then now store up
Energy system controller can be with according to the time relationship between operation initial time and power network valley operation period, control energy storage system
System is discharged with small-power, makes the initial state of charge value of energy-storage system close to above-mentioned operation lower limit or equal under above-mentioned operation
Limit, it can be entered so after energy-storage system puts into operation with ensureing that within the power network valley operation period a large amount of electric energy can be absorbed
And the problem of avoiding energy-storage system from overcharging.For example, the power network valley operation period for daily 23 when next day 7, transports
The row upper limit is 90%, and operation lower limit is 10%, if the time that energy-storage system puts into operation is 23, then energy-storage system controls
Device can by before being put into operation in energy-storage system by way of small-power electric discharge, by the initial state of charge value of energy-storage system adjust to
Run lower limit.If the time that energy-storage system puts into operation is 1, then can be to pass through small-power before energy-storage system puts into operation
The mode of electric discharge, the initial state of charge value of energy-storage system is adjusted to 30%.
After energy-storage system puts into operation according to the operational mode of above-mentioned setting, energy-storage system controller can detect storage in real time
The present charge state value of energy system, and then conversion control is carried out to the operational mode of energy-storage system according to the current state-of-charge value
System.The concrete mode of conversion and control can include：
When the present charge state value is not higher than operation lower limit, then the operational mode of the energy-storage system is set as institute
State simple charge mode；
When the present charge state value is not less than the operation upper limit, then the operational mode of the energy-storage system is set to be single
Pure discharge mode；
When the present charge state value is less than the operation upper limit and is higher than the operation lower limit, then the storage is kept
The operational mode of energy system is constant.
That is, when being not higher than operation lower limit when the present charge state value of energy-storage system reaches operation lower limit,
The operational mode of energy-storage system is then changed as simple charge mode；When the present charge state value of energy-storage system reaches the operation upper limit
When, then the operational mode of energy-storage system is changed as simple discharge mode.When energy-storage system present charge state is more than operation lower limit
And during less than the operation upper limit (i.e. between operation bound), then keep the operational mode of energy-storage system constant, that is, protect
The operational mode for holding energy-storage system is above-mentioned former setting operational mode.Once the present charge state value of energy-storage system reaches operation
The upper limit or operation lower limit just need to change operational mode, and it is not in overcharge or mistake that can so ensure energy-storage system
The danger put, energy-storage system is operated in optimal charging and discharging state, and then extend the service life of energy-storage system.
S103, the operational mode is sent to power network dispatching system, so that：The power network dispatching system receives the operation
Pattern, and target power regulating command is generated according to the operational mode, the target power regulating command is sent to described
Energy-storage system controller；
Specifically, after energy-storage system controller sets the operational mode of energy-storage system, the operational mode can be passed through
Telemechanical transposition is sent to power network dispatching system, and such power network dispatching system can be to receive the operational mode, and sets energy storage system
The power generating value of system generates above-mentioned target power regulation and referred in the range of the adjustable output of energy-storage system corresponding to the operational mode
Order.Wherein, the target power regulating command carries the power generating value.If for example, operational mode that power network dispatching system receives
The adjustable output scope of corresponding energy-storage system is [0, P], then can be to set the power generating value as any number in [0, P]
Value, such as P/2 etc..So output scope can be can adjust not over it with the power generating value of energy-storage system, avoid energy-storage system from going out
Now overcharge or cross the danger put.
It should be noted that preferably to meet the power demands of power network, power network dispatching system can be according to current electric grid
Power demands set above-mentioned power generating value, if current electric grid power demands amount is larger, energy-storage system may need to export more
Electric energy, then can be to set the power generating value of energy-storage system as larger value, such as 2P/3,4P/5 etc., so that energy-storage system
More electricity is discharged, meets current electric grid power demands.
After power network dispatching system generation target power regulating command, target power regulation can be referred to by telemechanical apparatus
Order is sent to energy-storage system controller.
S104, the target power regulating command that the power network dispatching system is sent is received, controls the energy-storage system
According to the power generating value power output entrained by the target power regulating command.
After energy-storage system controller receives above-mentioned target power regulating command, energy-storage system can be controlled according to the target
Power generating value power output entrained by power adjustment instruction.For example, when the power generating value is P/2, then energy-storage system controller
Just energy-storage system is controlled to be discharged with P/2 power output.If the power generating value is-P/2, then energy-storage system controller just controls
Energy-storage system is charged with P/2 power output.
As shown in Fig. 2 the unit of power generating value is MW in figure, the unit of time is minute (min) in Fig. 2 (a), Fig. 2 (b)
The unit of middle time is hour (Hour), and the default rated power for setting energy-storage system is 10MW, and time constant is 3 hours.
As can be seen that in a kind of application of power network AGC frequency modulation from 2 (a), contributed using existing power network energy-storage system
Energy-storage system corresponding to control method, which is contributed average every 1.5 minutes, just to be needed to change a charging and discharging state, and this makes energy-storage system
Service life it is very short.From Fig. 2 (b) as can be seen that in the power network AGC frequency modulation application shown in 2 (a), using the present invention
Energy-storage system, which is contributed about every 6 hours, corresponding to the control method that the power network energy-storage system that embodiment provides is contributed just needs conversion one
Secondary charging and discharging state.That is the control method that the power network energy-storage system provided using the embodiment of the present invention is contributed can incite somebody to action
In the control method contributed using existing power network energy-storage system, the charging and discharging state that energy-storage system is thousands of daily times is converted into
The charging and discharging state conversion of 4-6 times or so daily, greatly prolongs the service life of energy-storage system, while considerably reduce storage
The operating cost of energy system.
It can be seen that in scheme provided in an embodiment of the present invention, energy-storage system controller determines that the current of energy-storage system is filled first
Electricity condition value, the fortune of energy-storage system is set according to present charge state value and the initial launch pattern of energy-storage system set in advance
Row mode, operational mode is then sent to power network dispatching system, so that：Power network dispatching system receives operational mode, and according to fortune
Row mode generates target power regulating command, and energy-storage system controller receives the target power regulation that power network dispatching system is sent and referred to
Order, and energy-storage system is controlled according to the power generating value power output entrained by target power regulating command.Due to energy storage in this programme
System controller sets operational mode according to present charge state value and initial launch pattern, and then makes power network dispatching system can be with
Target power regulating command is generated according to the operational mode of energy-storage system, output regulatory demand quickly repeatedly is converted into folk prescription
To duration is long and regulatory demand that conversion times are few, while target power regulating command is met, greatly prolong storage
The service life of energy system, reduces operating cost.
It should be noted that energy-storage system controller detects the present charge state value of energy-storage system in real time, according to deserving
When preceding state-of-charge value carries out conversion and control to the operational mode of energy-storage system, mould further can also be run according to energy-storage system
Formula impulsive Δ carries out conversion and control.
Specifically, when the operational mode of the energy-storage system is the simple charge mode, the current charging is judged
Whether state value is in (the operation upper limit-Δ, run the upper limit+Δ)；
If the present charge state value is not in (the operation upper limit-Δ, run the upper limit+Δ), then described work as is judged
Whether preceding state-of-charge value is not less than the operation upper limit+Δ；
If the present charge state value switches the operational mode of the energy-storage system not less than the upper limit+Δ is run
For the simple discharge mode；
If the present charge state value, less than the operation upper limit+Δ, the operational mode for keeping the energy-storage system is
The simple charge mode；
If the present charge state value is in (the operation upper limit-Δ, run the upper limit+Δ), then the target is judged
Whether the power generating value entrained by power adjustment instruction is zero；
If zero, then the operational mode for switching the energy-storage system is the simple discharge mode；
If be not zero, the operational mode for keeping the energy-storage system is the simple charge mode；
When the operational mode of the energy-storage system is the simple discharge mode, judge that the present charge state value is
It is no interior in (operation lower limit-Δ, run lower limit+Δ)；
If the present charge state value is not in (operation lower limit-Δ, run lower limit+Δ), then described work as is judged
Whether preceding state-of-charge value is not higher than operation lower limit-Δ；
If the present charge state value switches the operational mode of the energy-storage system not higher than lower limit-Δ is run
For the simple charge mode；
If the present charge state value, higher than operation lower limit-Δ, the operational mode for keeping the energy-storage system is
The simple discharge mode；
If the present charge state value is in (operation lower limit-Δ, run lower limit+Δ), then the target is judged
Whether the power generating value entrained by power adjustment instruction is zero；
If zero, then the operational mode for switching the energy-storage system is simple charge mode；
If be not zero, the operational mode for keeping the energy-storage system is simple discharge mode；
Wherein, energy-storage system operational mode impulsive Δ is generally determined as 3%-5%.
By above-mentioned conversion and control mode, if the present charge state value of energy-storage system exceedes the operation upper limit+Δ, explanation
Now the current remaining of energy-storage system is a lot, continues charging energy-storing system and is likely to the danger overcharged occur, so in order to
Ensure energy-storage system the problem of will not overcharging, now energy-storage system controller can be to switch the operational mode of energy-storage system
For simple discharge mode, energy-storage system is set not continue to charge, but discharged.Likewise, if energy-storage system is current
State-of-charge value illustrates that the current remaining of now energy-storage system is seldom, continues discharge energy-storage system less than operation lower limit-Δ
It is likely to the problem of putting occurred, so the danger put to ensure energy-storage system not occur, now energy-storage system control
Device can make energy-storage system not continue to discharge using the operational mode for switching energy-storage system as simple charge mode, but carry out
Charging.
And when the present charge state value of energy-storage system is in (the operation upper limit-Δ, the operation upper limit+Δ) or (under operation
Limit-Δ, run lower limit+Δ) when, illustrate that the current remaining of now energy-storage system is in more moderate state, energy storage system
System has certain charging and discharging capabilities, and overcharging or putting excessively for energy-storage system will not be caused by continuing charge or discharge in a short time.
So now energy-storage system controller can using select the power generating value entrained by above-mentioned target power regulating command as zero when
The operational mode of switching energy-storage system is waited, can so avoid switching due to the operational mode of energy-storage system to dispatching of power netwoks,
And control of the energy-storage system controller to energy-storage system impacts and causes operation to go wrong, and makes the operation of energy-storage system
It is more stable.
Corresponding to above method embodiment, the embodiment of the present invention additionally provides the control dress that a kind of power network energy-storage system is contributed
Put.The control device that a kind of power network energy-storage system provided below the embodiment of the present invention is contributed is introduced.
As shown in figure 3, the control device that a kind of power network energy-storage system is contributed, applied to energy-storage system controller, the dress
Put including：
Present charge state value determining module 310, for determining the present charge state value of energy-storage system；
Wherein, the present charge state is the energy-storage system current remaining and the ratio of rated energy capacity.
Operational mode setting module 320, for setting the operation of the energy-storage system according to the present charge state value
Pattern；
Target power regulating command generation module 330, for sending the operational mode to power network dispatching system, so that：
The power network dispatching system receives the operational mode, and generates target power regulating command according to the operational mode, by institute
Target power regulating command is stated to send to the energy-storage system controller；
Wherein, the target power regulating command carries power generating value.
Power output module 340, the target power regulating command sent for receiving the power network dispatching system, control
The energy-storage system is made according to the power generating value power output entrained by the target power regulating command.
It can be seen that in scheme provided in an embodiment of the present invention, energy-storage system controller determines that the current of energy-storage system is filled first
Electricity condition value, the operational mode of energy-storage system is set according to present charge state value, then send operational mode to dispatching of power netwoks
System, so that：Power network dispatching system receives operational mode, and generates target power regulating command, energy storage system according to operational mode
Controller of uniting receives the target power regulating command that power network dispatching system is sent, and controls energy-storage system to be adjusted according to target power
The entrained power generating value power output of instruction.Due in this programme energy-storage system controller according to present charge state value and initial
Operational mode sets operational mode, and then power network dispatching system is generated target power according to the operational mode of energy-storage system
Regulating command, output regulatory demand quickly repeatedly is converted into the regulation that unidirectional duration is long and conversion times are few needs
Ask, while target power regulating command is met, greatly prolong the service life of energy-storage system, reduce operating cost.
In one embodiment of the invention, described device (is not shown also including initial launch pattern setting module in figure
Go out), it is used for：
In the operation initial time of the energy-storage system, according to default initial pattern set-up mode, the energy storage is set
The operational mode of system.
Specifically, the initial launch pattern setting module specifically can be used for：
When the initial state of charge value of the energy-storage system is not higher than operation lower limit, the operation of the energy-storage system is set
Pattern is simple charge mode；
When the initial state of charge value of the energy-storage system is not less than the operation upper limit, the operation of the energy-storage system is set
Pattern is simple discharge mode；
When the initial state of charge value of the energy-storage system is less than the operation upper limit and is higher than the operation lower limit, if
The operational mode of the fixed energy-storage system is simple charge mode or simple discharge mode；
Wherein, the initial state of charge value is dump energy and specified energy of the energy-storage system in operation initial time
The ratio of capacity is measured, the operation upper limit is the energy-storage system to preset the maximum state of charge value of rated power charging, institute
It is the minimum state of charge value that the energy-storage system is discharged with default rated power to state operation lower limit, the simple charge mode pair
The adjustable output scope for the energy-storage system answered is [- P, 0], the energy-storage system corresponding to the simple discharge mode
Adjustable output scope is [0, P], and P is the default rated power of the energy-storage system.
In one embodiment of the invention, described device can also include initial state of charge value adjusting module (figure
Not shown in), it is used for：
In the operation initial time of the energy-storage system, according to default initial pattern set-up mode, the energy storage is set
Before the operational mode of system, the period is run with power network peak value according to the operation initial time and power network valley runs the period
Time relationship, adjust the initial state of charge value of the energy-storage system.
In one embodiment of the invention, described device (can also not shown including time constant setting module in figure
Go out), it is used for：
In the operation initial time of the energy-storage system, the period is run according to power network peak value and power network valley runs the period
Time span sets the time constant of the energy-storage system；
According to the time constant, the default rated power of the energy-storage system is set.
Further, the initial launch pattern setting module can include：
First initial setup unit (not shown), it is less than institute for the initial state of charge value when the energy-storage system
When stating the operation upper limit and being higher than the operation lower limit, if the operation initial time is in the power network peak value operation period, if
The operational mode of the fixed energy-storage system is the simple discharge mode；
Second initial setup unit (not shown), it is less than institute for the initial state of charge value when the energy-storage system
When stating the operation upper limit and being higher than the operation lower limit, if the operation initial time is in the power network valley operation period, if
The operational mode of the fixed energy-storage system is the simple charge mode.
Specifically, operational mode setting module 320 can include：
First current setup unit (not shown), for when the present charge state value is not higher than operation lower limit
When, the operational mode of the energy-storage system is set as the simple charge mode；
Second current setup unit (not shown), for when the present charge state value is not less than the operation upper limit
When, the operational mode of the energy-storage system is set as the simple discharge mode；
3rd current setup unit (not shown), for being less than the operation upper limit when the present charge state value
And during higher than the operation lower limit, then keep the operational mode of the energy-storage system constant.
In one embodiment of the invention, said apparatus can also include：
First judge module (not shown), for being the simple charging mould when the operational mode of the energy-storage system
During formula, judge the present charge state value whether in (the operation upper limit-Δ, run the upper limit+Δ)；
Second judge module (not shown), for be not at when the present charge state value (operation the upper limit-Δ,
Run the upper limit+Δ) it is interior when, judge the present charge state value whether not less than operation the upper limit+Δ；
First execution module (not shown), for when the present charge state value not less than operation the upper limit+Δ when,
The operational mode for switching the energy-storage system is the simple discharge mode；
Second execution module (not shown), for when the present charge state value is less than the operation upper limit+Δ, protecting
The operational mode for holding the energy-storage system is the simple charge mode；
3rd judge module (not shown), for being in (the operation upper limit-Δ, fortune when the present charge state value
The row upper limit+Δ) it is interior when, judge whether the power generating value entrained by the target power regulating command is zero；
3rd execution module (not shown), for being zero when the power generating value entrained by the target power regulating command
When, the operational mode for switching the energy-storage system is the simple discharge mode；
4th execution module (not shown), for not being when the power generating value entrained by the target power regulating command
When zero, the operational mode for keeping the energy-storage system is the simple charge mode；
4th judge module (not shown), for being the simple electric discharge mould when the operational mode of the energy-storage system
During formula, judge the present charge state value whether in (operation lower limit-Δ, run lower limit+Δ)；
5th judge module (not shown), for be not at when the present charge state value (operation lower limit-Δ,
Run lower limit+Δ) it is interior when, judge the present charge state value whether not higher than operation lower limit-Δ；
5th execution module (not shown), for when the present charge state value not higher than operation lower limit-Δ when,
The operational mode for switching the energy-storage system is the simple charge mode；
6th execution module (not shown), for when the present charge state value is higher than operation lower limit-Δ, protecting
The operational mode for holding the energy-storage system is the simple discharge mode；
6th judge module (not shown), for being in { operation lower limit-Δ, fortune when the present charge state value
Row lower limit+Δ } it is interior when, judge whether the power generating value entrained by the target power regulating command is zero；
7th execution module (not shown), for being zero when the power generating value entrained by the target power regulating command
When, the operational mode for switching the energy-storage system is the simple charge mode；
8th execution module (not shown), for not being when the power generating value entrained by the target power regulating command
When zero, the operational mode for keeping the energy-storage system is the simple discharge mode；
Wherein, the energy-storage system operational mode impulsive Δ is 3%-5%.
Specifically, the target power regulating command generation module 330 can be used for：
The operational mode is sent to power network dispatching system, so that：The power network dispatching system receives the operational mode,
And the power generating value is set in the range of the adjustable output of the energy-storage system corresponding to the operational mode, generate the mesh
Power adjustment instruction is marked, the target power regulating command is sent to the energy-storage system controller, wherein, the target work(
Rate regulating command carries power generating value.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for device
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
Can one of ordinary skill in the art will appreciate that realizing that all or part of step in above method embodiment is
To instruct the hardware of correlation to complete by program, described program can be stored in computer read/write memory medium,
The storage medium designated herein obtained, such as：ROM/RAM, magnetic disc, CD etc..
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 substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (18)
1. the control method that a kind of power network energy-storage system is contributed, it is characterised in that applied to energy-storage system controller, methods described
Including：
The present charge state value of energy-storage system is determined, wherein, the present charge state is the energy-storage system current residual
The ratio of energy and rated energy capacity；
The operational mode of the energy-storage system is set according to the present charge state value；
The operational mode is sent to power network dispatching system, so that：The power network dispatching system receives the operational mode, and root
Target power regulating command is generated according to the operational mode, the target power regulating command is sent to the energy-storage system control
Device processed, wherein, the target power regulating command carries power generating value；
The target power regulating command that the power network dispatching system is sent is received, controls the energy-storage system according to the mesh
Mark the power generating value power output entrained by power adjustment instruction.
2. the method as described in claim 1, it is characterised in that it is described determine energy-storage system present charge state value the step of
Before, methods described also includes：
In the operation initial time of the energy-storage system, according to default initial pattern set-up mode, the energy-storage system is set
Operational mode.
3. method as claimed in claim 2, it is characterised in that it is described according to default initial pattern set-up mode, set institute
The step of operational mode for stating energy-storage system, includes：
When the initial state of charge value of the energy-storage system is not higher than operation lower limit, the operational mode of the energy-storage system is set
For simple charge mode；
When the initial state of charge value of the energy-storage system is not less than the operation upper limit, the operational mode of the energy-storage system is set
For simple discharge mode；
When the initial state of charge value of the energy-storage system is less than the operation upper limit and is higher than the operation lower limit, institute is set
The operational mode for stating energy-storage system is simple charge mode or simple discharge mode；
Wherein, the initial state of charge value is that the energy-storage system holds in the dump energy of operation initial time with rated energy
The ratio of amount, the operation upper limit are the energy-storage system to preset the maximum state of charge value of rated power charging, the fortune
Row lower limit is the minimum state of charge value that the energy-storage system is discharged with default rated power, corresponding to the simple charge mode
The adjustable output scope of the energy-storage system is [- P, 0], and the energy-storage system is adjustable corresponding to the simple discharge mode
Section output scope is [0, P], and P is the default rated power of the energy-storage system.
4. method as claimed in claim 3, it is characterised in that in the operation initial time of the energy-storage system, according to default
Initial pattern set-up mode, before the step of setting the operational mode of the energy-storage system, methods described also includes：
According to the operation initial time and the time relationship of power network peak value operation period and power network valley operation period, institute is adjusted
State the initial state of charge value of energy-storage system.
5. method as claimed in claim 3, it is characterised in that it is described determine energy-storage system present charge state value the step of
Before, methods described also includes：
In the operation initial time of the energy-storage system, the period is run according to power network peak value and power network valley runs the time of period
Length sets the time constant of the energy-storage system；
According to the time constant, the default rated power of the energy-storage system is set.
6. method as claimed in claim 3, it is characterised in that described when the initial state of charge value of the energy-storage system is not low
In it is described operation lower limit and not higher than it is described operation the upper limit when, set the operational mode of the energy-storage system as simple charge mode
Or the step of simple discharge mode, includes：
If the operation initial time is in the power network peak value operation period, the operational mode for setting the energy-storage system is described
Simple discharge mode；
If the operation initial time is in the power network valley operation period, the operational mode for setting the energy-storage system is described
Simple charge mode.
7. method as claimed in claim 3, it is characterised in that described according to the present charge state value and set in advance
The step of operational mode of the initial launch pattern setting energy-storage system of energy-storage system, includes：
When the present charge state value is not higher than operation lower limit, then the operational mode of the energy-storage system is set as the list
Pure charge mode；
When the present charge state value is not less than the operation upper limit, then the operational mode of the energy-storage system is set as the list
Pure discharge mode；
When the present charge state value is less than the operation upper limit and is higher than the operation lower limit, then the energy storage system is kept
The operational mode of system is constant.
8. method as claimed in claim 7, it is characterised in that methods described also includes：
When the operational mode of the energy-storage system is the simple charge mode, judge whether the present charge state value is located
In in (the operation upper limit-Δ, run the upper limit+Δ)；
If the present charge state value is not in (operation the upper limit-Δ, run the upper limit+Δ), then judge described currently to fill
Whether electricity condition value is not less than the operation upper limit+Δ；
If for the present charge state value not less than the operation upper limit+Δ, the operational mode for switching the energy-storage system is institute
State simple discharge mode；
If for the present charge state value less than the operation upper limit+Δ, the operational mode for keeping the energy-storage system is described
Simple charge mode；
If the present charge state value is in (the operation upper limit-Δ, run the upper limit+Δ), then the target power is judged
Whether the power generating value entrained by regulating command is zero；
If zero, then the operational mode for switching the energy-storage system is the simple discharge mode；
If be not zero, the operational mode for keeping the energy-storage system is the simple charge mode；
When the operational mode of the energy-storage system is the simple discharge mode, judge whether the present charge state is in
In (operation lower limit-Δ, run lower limit+Δ)；
If the present charge state value is not in (operation lower limit-Δ, run lower limit+Δ), then judge described currently to fill
Whether electricity condition value is not higher than operation lower limit-Δ；
If for the present charge state value not higher than operation lower limit-Δ, the operational mode for switching the energy-storage system is institute
State simple charge mode；
If for the present charge state value higher than operation lower limit-Δ, the operational mode for keeping the energy-storage system is described
Simple discharge mode；
If the present charge state value is in (operation lower limit-Δ, run lower limit+Δ), then the target power is judged
Whether the power generating value entrained by regulating command is zero；
If zero, then the operational mode for switching the energy-storage system is the simple charge mode；
If be not zero, the operational mode for keeping the energy-storage system is the simple discharge mode；
Wherein, the energy-storage system operational mode impulsive Δ is 3%-5%.
9. the method as described in claim any one of 1-8, it is characterised in that the power network dispatching system receives the operation mould
Formula, and included according to the step of operational mode generation target power regulating command：
The power network dispatching system receives the operational mode, and sets the power generating value described corresponding to the operational mode
In the range of the adjustable output of energy-storage system, the target power regulating command is generated.
A kind of 10. control device that power network energy-storage system is contributed, it is characterised in that applied to energy-storage system controller, the dress
Put including：
Present charge state value determining module, for determining the present charge state value of energy-storage system, wherein, the current charging
State is the energy-storage system current remaining and the ratio of rated energy capacity；
Operational mode setting module, for setting the operational mode of the energy-storage system according to the present charge state value；
Target power regulating command generation module, for sending the operational mode to power network dispatching system, so that：The power network
Scheduling system receives the operational mode, and generates target power regulating command according to the operational mode, by the target work(
Rate regulating command is sent to the energy-storage system controller, wherein, the target power regulating command carries power generating value；
Power output module, the target power regulating command sent for receiving the power network dispatching system, described in control
Energy-storage system is according to the power generating value power output entrained by the target power regulating command.
11. device as claimed in claim 10, it is characterised in that described device also includes initial launch pattern setting module,
For：
Before the present charge state value for determining energy-storage system, in the operation initial time of the energy-storage system, according to it is default just
Beginning pattern set-up mode, set the operational mode of the energy-storage system.
12. device as claimed in claim 11, it is characterised in that the initial launch pattern setting module is specifically used for：
When the initial state of charge value of the energy-storage system is not higher than operation lower limit, the operational mode of the energy-storage system is set
For simple charge mode；
When the initial state of charge value of the energy-storage system is not less than the operation upper limit, the operational mode of the energy-storage system is set
For simple discharge mode；
When the initial state of charge value of the energy-storage system is less than the operation upper limit and is higher than the operation lower limit, institute is set
The operational mode for stating energy-storage system is simple charge mode or simple discharge mode；
Wherein, the initial state of charge value is that the energy-storage system holds in the dump energy of operation initial time with rated energy
The ratio of amount, the operation upper limit are the energy-storage system to preset the maximum state of charge value of rated power charging, the fortune
Row lower limit is the minimum state of charge value that the energy-storage system is discharged with default rated power, corresponding to the simple charge mode
The adjustable output scope of the energy-storage system is [- P, 0], and the energy-storage system is adjustable corresponding to the simple discharge mode
Section output scope is [0, P], and P is the default rated power of the energy-storage system.
13. device as claimed in claim 12, it is characterised in that described device also includes initial state of charge value adjustment mould
Block, it is used for：
In the operation initial time of the energy-storage system, according to default initial pattern set-up mode, the energy-storage system is set
Operational mode before, the period is run according to operation initial time and the power network peak value and power network valley runs the time of period
Relation, adjust the initial state of charge value of the energy-storage system.
14. device as claimed in claim 12, it is characterised in that described device also includes time constant setting module, is used for：
In the operation initial time of the energy-storage system, the period is run according to power network peak value and power network valley runs the time of period
Length sets the time constant of the energy-storage system；
According to the time constant, the default rated power of the energy-storage system is set.
15. device as claimed in claim 12, it is characterised in that the initial launch pattern setting module includes：
First initial setup unit, less than the operation upper limit and it is higher than for the initial state of charge value when the energy-storage system
During the operation lower limit, if the operation initial time is in the power network peak value operation period, the energy-storage system is set
Operational mode is the simple discharge mode；
Second initial setup unit, less than the operation upper limit and it is higher than for the initial state of charge value when the energy-storage system
During the operation lower limit, if the operation initial time is in the power network valley operation period, the energy-storage system is set
Operational mode is the simple charge mode.
16. device as claimed in claim 12, it is characterised in that the operational mode setting module includes：
First current setup unit, for when the present charge state value is not higher than operation lower limit, setting the energy storage system
The operational mode of system is the simple charge mode；
Second current setup unit, for when the present charge state value is not less than the operation upper limit, setting the energy storage system
The operational mode of system is the simple discharge mode；
3rd current setup unit, for when the present charge state value is less than the operation upper limit and higher than under the operation
In limited time, then keep the operational mode of the energy-storage system constant.
17. device as claimed in claim 16, it is characterised in that described device also includes：
First judge module, for when the operational mode of the energy-storage system is the simple charge mode, judging described work as
Whether preceding state-of-charge value is in (the operation upper limit-Δ, run the upper limit+Δ)；
Second judge module, for be not at when the present charge state value (operation the upper limit-Δ, run the upper limit+Δ) it is interior when,
Judge the present charge state value whether not less than the operation upper limit+Δ；
First execution module, for when the present charge state value is not less than the operation upper limit+Δ, switching the energy-storage system
Operational mode be the simple discharge mode；
Second execution module, for when the present charge state value is less than the operation upper limit+Δ, keeping the energy-storage system
Operational mode is the simple charge mode；
3rd judge module, for when the present charge state value is interior in (the operation upper limit-Δ, run the upper limit+Δ), sentencing
Whether the power generating value broken entrained by the target power regulating command is zero；
3rd execution module, for when the power generating value entrained by the target power regulating command is zero, switching the energy storage
The operational mode of system is the simple discharge mode；
4th execution module, for when the power generating value entrained by the target power regulating command is not zero, keeping the storage
The operational mode of energy system is the simple charge mode；
4th judge module, for when the operational mode of the energy-storage system is the simple discharge mode, judging described work as
Whether preceding state-of-charge value is in (operation lower limit-Δ, run lower limit+Δ)；
5th judge module, for be not at when the present charge state value (operation lower limit-Δ, run lower limit+Δ) it is interior when,
Judge the present charge state value whether not higher than operation lower limit-Δ；
5th execution module, for when the present charge state value is not higher than operation lower limit-Δ, switching the energy-storage system
Operational mode be the simple charge mode；
6th execution module, for when the present charge state value is higher than operation lower limit-Δ, keeping the energy-storage system
Operational mode is the simple discharge mode；
6th judge module, for when the present charge state value is interior in { operation lower limit-Δ, run lower limit+Δ }, sentencing
Whether the power generating value broken entrained by the target power regulating command is zero；
7th execution module, for when the power generating value entrained by the target power regulating command is zero, switching the energy storage
The operational mode of system is the simple charge mode；
8th execution module, for when the power generating value entrained by the target power regulating command is not zero, keeping the storage
The operational mode of energy system is the simple discharge mode；
Wherein, the energy-storage system operational mode impulsive Δ is 3%-5%.
18. the device as described in claim any one of 10-17, it is characterised in that the target power regulating command generates mould
Block is specifically used for：
The operational mode is sent to power network dispatching system, so that：The power network dispatching system receives the operational mode, and sets
The fixed power generating value generates the target work(in the range of the adjustable output of the energy-storage system corresponding to the operational mode
Rate regulating command, the target power regulating command is sent to the energy-storage system controller, wherein, the target power is adjusted
Section instruction carries power generating value.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460081A (en) * | 2019-09-11 | 2019-11-15 | 华润智慧能源有限公司 | The charging method and device of energy-storage system, server and storage medium |
| CN112713604A (en) * | 2020-12-22 | 2021-04-27 | 合肥阳光新能源科技有限公司 | Energy storage power adjusting method and device and energy storage system |
| CN116846047A (en) * | 2023-09-01 | 2023-10-03 | 杭州协能科技股份有限公司 | Battery cluster parallel system and control method and device for charging and discharging processes of battery cluster parallel system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311942A (en) * | 2013-03-18 | 2013-09-18 | 国家电网公司 | Control method of battery energy storage system for peak clipping and valley filling in distribution network |
| CN103326428A (en) * | 2013-06-08 | 2013-09-25 | 东北电力大学 | Energy storage system operation optimization control method for prolonging service life of lithium battery |
| CN103501022A (en) * | 2013-09-22 | 2014-01-08 | 广西电网公司 | Hybrid energy storage system power distribution method based on states of charge |
| CN105226777A (en) * | 2015-09-22 | 2016-01-06 | 国网上海市电力公司 | A kind of Poewr control method of energy-storage system |
-
2016
- 2016-09-27 CN CN201610855056.4A patent/CN107872066B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311942A (en) * | 2013-03-18 | 2013-09-18 | 国家电网公司 | Control method of battery energy storage system for peak clipping and valley filling in distribution network |
| CN103326428A (en) * | 2013-06-08 | 2013-09-25 | 东北电力大学 | Energy storage system operation optimization control method for prolonging service life of lithium battery |
| CN103501022A (en) * | 2013-09-22 | 2014-01-08 | 广西电网公司 | Hybrid energy storage system power distribution method based on states of charge |
| CN105226777A (en) * | 2015-09-22 | 2016-01-06 | 国网上海市电力公司 | A kind of Poewr control method of energy-storage system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110460081A (en) * | 2019-09-11 | 2019-11-15 | 华润智慧能源有限公司 | The charging method and device of energy-storage system, server and storage medium |
| CN110460081B (en) * | 2019-09-11 | 2023-03-21 | 华润智慧能源有限公司 | Charging method and device of energy storage system, server and storage medium |
| CN112713604A (en) * | 2020-12-22 | 2021-04-27 | 合肥阳光新能源科技有限公司 | Energy storage power adjusting method and device and energy storage system |
| CN112713604B (en) * | 2020-12-22 | 2023-04-07 | 阳光新能源开发股份有限公司 | Energy storage power adjusting method and device and energy storage system |
| CN116846047A (en) * | 2023-09-01 | 2023-10-03 | 杭州协能科技股份有限公司 | Battery cluster parallel system and control method and device for charging and discharging processes of battery cluster parallel system |
| CN116846047B (en) * | 2023-09-01 | 2023-11-14 | 杭州协能科技股份有限公司 | Battery cluster parallel system and control method and device for charging and discharging processes of battery cluster parallel system |
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Application publication date: 20180403 Assignee: Beijing Haibo Sichuang Technology Co.,Ltd. Assignor: RAY POWER SYSTEMS CO.,LTD. Contract record no.: X2022990000842 Denomination of invention: A control method and device for output of power grid energy storage system Granted publication date: 20200612 License type: Common License Record date: 20221028 |