CN107863779B - Pulse load energy regulates and controls method and system in isolated power - Google Patents
Pulse load energy regulates and controls method and system in isolated power Download PDFInfo
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- CN107863779B CN107863779B CN201711342471.0A CN201711342471A CN107863779B CN 107863779 B CN107863779 B CN 107863779B CN 201711342471 A CN201711342471 A CN 201711342471A CN 107863779 B CN107863779 B CN 107863779B
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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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- 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
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
Abstract
The embodiment of the invention provides pulse load energy control method and systems in a kind of isolated power, wherein, the described method includes: S1, by solving default Optimized model, the charging for obtaining each super capacitor in the multiple super capacitor enters moment and charging duration, wherein, the objective function of the default Optimized model is the sum of the power supply income of the multiple pulse load maximum；S2 enters moment and charging duration according to the charging of each super capacitor, controls the charge and discharge of each super capacitor, to realize the regulation of energy to the multiple pulse load.Pulse loads multiple in system are regulated and controled according to default Optimized model, so that regulating strategy meets system requirements and has theoretical guarantee, while multiple pulse loads carry out regulation of energy suitable for system.
Description
Technical field
The present embodiments relate to energy technology fields, more particularly, to pulse load in a kind of isolated power
Regulation of energy method and system.
Background technique
Isolated power may need to power to pulsating load, once being triggered, pulse load will disappear in a short time
Big energy is consumed, power is often more than megawatt (MW) magnitude.Energy is provided by generator in isolated power, and energy storage device is made
To assist, in order to guarantee safe operation of power system, it is necessary to keep power equilibrium,transient.In no reasonable arrangement pulse load
In the case of, electric system may lost stability to collapse.On the other hand, it is desirable to which at a given time period, power supply income is most
Greatly, the number of as pulse load power supply is as more as possible.When there are multiple pulse loads, need to consider them in stability analysis
Collective effect, and maximize power supply total revenue.
As shown in Figure 1, isolated power is not directly to power to pulse load because pulse load power is very big,
But pass through intermediate medium of the super capacitor as energy.In S1It is closed S2When disconnection, super capacitor and isolated power phase
Even, isolated power is super capacitor charging, charge power PC.After super capacitor charges, S1Disconnect S2Closure surpasses
Grade capacitor and isolated power disconnect, and discharge pulse load.The time of super capacitor charging is longer than discharge time, so that it may
Make charge power PCIt is smaller than power needed for pulse load, so that isolated power can be undertaken.
The problem of powering for isolated power to pulse load, when the existing scholar of foreign countries proposes single pulse load,
Control mode of the electric system to super capacitor charging process.Which consider synchronous generator power climbing limitation and most
High-power limitation, the limitation of current transformer maximum current and electric current climbing limitation, it is super for controlling target to be in the shortest possible time
Grade capacitor fills enough electric energy, and terminates charging process.Fig. 2 super capacitor single charge process, abscissa are time, ordinate
It is instantaneous charge power PC.From t0Moment starts to charge.t0To t1Period is advanced the speed limitation by charging current, i.e. charging electricity
Stream, which is advanced the speed, reaches the upper limit.t1To t2It is limited by generator power climbing capacity, charge power, which is advanced the speed, reaches the upper limit.t2
To t3It is limited by generator maximum power generation, charge power reaches the upper limit.t3To t4It is the mistake that charging current is most reduced to 0 fastly
Journey, charge power also drop to 0.If there is error, t in control process4When charging current be not still reduced to 0, then needing t4
To t5Time electric current is reduced to 0.
But whether above-mentioned control method does not consider any constraint condition of electric system, can for the solution found out
The case where meeting system requirements, theory does not guarantee, while above-mentioned control method is loaded just for single pulse, is not applied for
Electric system with multiple pulse loads.
Summary of the invention
The embodiment of the invention provides a kind of isolated electricity for overcoming the above problem or at least being partially solved the above problem
Pulse load energy regulates and controls method and system in Force system.
On the one hand the embodiment of the invention provides pulse load energies in a kind of isolated power to regulate and control method, the orphan
Vertical electric system includes multiple pulse loads and multiple super capacitors, the multiple pulse load and the multiple super capacitor
It corresponds, which comprises
S1 obtains the charging access of each super capacitor in the multiple super capacitor by solving default Optimized model
Moment and charging duration, wherein the objective function of the default Optimized model be the multiple pulse load power supply income it
And maximum；
S2 enters moment and charging duration according to the charging of each super capacitor, to the charge and discharge of each super capacitor into
Row control, to realize the regulation of energy to the multiple pulse load.
Further, the default Optimized model further includes energy storage device maximum charge-discharge electric power constraint condition and/or is
System Transient Stability Constraints condition.
Further, the energy storage device maximum charge-discharge electric power constraint condition are as follows:
Within a preset period of time, the maximum value Yu the isolated power train of the total charge power curve of the multiple super capacitor
System distributes to the absolute value of the difference of the maximum power of the multiple pulse load, sets no more than energy storage in the isolated power
Standby maximum charge-discharge electric power.
Further, when in the isolated power including energy storage device, the Transient Stability Constraints condition are as follows:
The maximum value of the multiple total charge power curve of super capacitor and the sum of the discharge curve of the energy storage device
Absolute value, no more than the constant PStable using stability criteria determined off-linelimit；
When not including energy storage device in the isolated power, the Transient Stability Constraints condition are as follows:
The absolute value of the maximum value of the multiple total charge power curve of super capacitor, no more than using stability criteria from
The constant PStable of line measurementlimit。
Further, before step S1, the method also includes:
At the time of obtaining the point that derivative in the charge power curve of each super capacitor is not present and correspond to, to be checked makes an inventory of is constituted
Set；
Obtaining from the point set to be checked makes the total charge power curve of the multiple super capacitor be maximized correspondence
At the time of.
Further, step S1 is specifically included:
Using the PSO algorithm based on feasible solution retention strategy, the default Optimized model is solved, is obtained each super
The charging of grade capacitor enters moment and charging duration.
Further, the PSO algorithm based on feasible solution retention strategy includes:
Check whether each point after initialization meets constraint condition when initializing each point, after random initializtion each point, such as
Fruit is unsatisfactory for, then random initializtion again, until meeting constraint；
When updating position a little in iteration, if the new position being calculated is unsatisfactory for constraining, do not update.
On the other hand described the embodiment of the invention provides pulse load energy regulator control system in a kind of isolated power
Isolated power includes multiple pulse loads and multiple super capacitors, the multiple pulse load and the multiple super electricity
Hold and corresponds, the system comprises:
Computing module, for obtaining each super capacitor in the multiple super capacitor by solving default Optimized model
Charging enter moment and charging duration, wherein the objective function of the default Optimized model is the multiple pulse load
The sum of income of powering maximum；
Regulate and control module, for entering moment and charging duration according to the charging of each super capacitor, to each super capacitor
Charge and discharge controlled, to realize to the regulation of energy of the multiple pulse load.
Third aspect of the invention embodiment provides a kind of computer program product, and the computer program product includes storage
Computer program in non-transient computer readable storage medium, the computer program include program instruction, when the journey
When sequence instruction is computer-executed, the computer is made to execute the above method.
Fourth aspect of the invention embodiment provides a kind of non-transient computer readable storage medium, the non-transient computer
Readable storage medium storing program for executing stores computer instruction, and the computer instruction makes the computer execute the above method.
Pulse load energy regulates and controls method and system in a kind of isolated power provided in an embodiment of the present invention, by drawing
Entering objective function is the maximum default Optimized model of the sum of power supply total revenue of all pulse loads in system, and default according to this
Optimized model solves the optimal charging process of the corresponding multiple super capacitors of multiple pulse loads in isolated power, thus
It realizes to the regulation of energy of pulse loads multiple in system, pulse loads multiple in system is adjusted according to default Optimized model
Control, so that regulating strategy meets system requirements and has theoretical guarantee, while multiple pulse loads carry out energy suitable for system
Amount regulation.
Detailed description of the invention
Fig. 1 be in the prior art only comprising a pulse load isolated power circuit diagram；
Fig. 2 is the charge power curve that single pulse loads corresponding super capacitor in the prior art；
Fig. 3 is the process that pulse load energy regulates and controls method in a kind of isolated power provided in an embodiment of the present invention
Figure；
Fig. 4 is the charge power curve of the corresponding super capacitor of i-th kind of pulse load in the embodiment of the present invention；
Fig. 5 is the flow chart of PSO algorithm in the embodiment of the present invention；
Fig. 6 is the flow chart of the PSO algorithm based on feasible solution retention strategy in the embodiment of the present invention；
Fig. 7 is the iterative process schematic diagram of the PSO algorithm based on feasible solution retention strategy in present example；
Fig. 8 is all super capacitor charge power summation curves in system in present example；
Fig. 9 is that the PSO algorithm solving result optimality in present example based on feasible solution retention strategy examines schematic diagram；
Figure 10 is the structure of pulse load energy regulator control system in a kind of isolated power provided in an embodiment of the present invention
Block diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
In the isolated power containing multiple pulse loads, it is equipped with multiple correspondingly with multiple pulse loads
Super capacitor regulates and controls, it is necessary to multiple in order to the energy in reasonable distribution electric system and to multiple pulse loads
Super capacitor has optimal charging process under certain constraints.
Before proposing default Optimized model, first assumed as follows:
1) consider different types of pulse load, the discharge process of super capacitor comes with isolation of system, and super electricity
After appearance is full of, it is believed that energy constant Econst；
2) for same kind of pulse load, the form of different charging curves reflects different charging durations, but curve
Total area be equal；
3) super capacitor of every kind of pulse load is disconnected with system immediately and is powered to pulse load after charging
(i.e. super capacitor discharges to pulse load), power-on time is given parameter.After this process, super capacitor storage
Energy becomes 0；
4) optimize in given time period, optimizable decision variable is initially connecing for the super capacitor of every kind of pulse load
The angle of incidence, super capacitor charging process time；
5) after super capacitor access system, continue charge and discharge process until the period terminates.
Fig. 3 is the process that pulse load energy regulates and controls method in a kind of isolated power provided in an embodiment of the present invention
Figure, as shown in Figure 3, which comprises S1 is obtained each in the multiple super capacitor by solving default Optimized model
The charging of super capacitor enters moment and charging duration, wherein the objective function of the default Optimized model is the multiple arteries and veins
Rush the sum of the power supply income of load maximum；S2 enters moment and charging duration according to the charging of each super capacitor, to each super
The charge and discharge of grade capacitor are controlled, to realize the regulation of energy to the multiple pulse load.
Wherein, the expression formula of the default Optimized model is as follows:
fiThe single power supply income for indicating i-th kind of pulse load, is nonnegative constant.NiIt is i-th kind of pulse load when default
Between power supply number in T, it is not necessary to be integer.Wherein,
wiAt the time of indicating the super capacitor access system of i-th kind of pulse load, ciIndicate that i-th kind of pulse load is corresponding
The single charge duration of super capacitor, riIndicate the discharge time of the corresponding super capacitor of i-th kind of pulse load, riFor constant.
Specifically, as shown in figure 4, the charge power curve of the corresponding super capacitor of i-th kind of pulse load, in wiMoment is super
Grade capacitor accesses starting to charge for system in independent shop, single charge durationriIt is super capacitor to arteries and veins
Rush the time of load discharge.Single charge power curve and the axis of abscissas of each super capacitor surround trapezoidal, trapezoidal area Si
Indicating super capacitor single charge energy is.wi、It is variable, riAnd SiIt is constant.After starting to charge, fill
Electrical power starts mechanical periodicity, and the period isIt in embodiments of the present invention, is exactly to default Optimized model
Solve the w of each super capacitori、So that pulse load supplying total benefit is maximum in system.
Furthermore it is possible to find out trapezoidal height
Because the change rate of the limitation of the equipment such as generator, current transformer, charge power has bound, it is set to λ1And λ2,
They are given parameters.Therefore variable will also meet constraintWith
Pulse load energy regulates and controls method in a kind of isolated power provided in an embodiment of the present invention, by introducing target
Function is the maximum default Optimized model of the sum of power supply total revenue of all pulse loads in system, and according to the default optimization mould
Type solves the optimal charging process of the corresponding multiple super capacitors of multiple pulse loads in isolated power, to realize pair
The regulation of energy of multiple pulse loads in system regulates and controls pulse loads multiple in system according to default Optimized model, makes
It obtains regulating strategy and meets system requirements with theoretical guarantee, while multiple pulse loads progress energy tune suitable for system
Control.
Based on the above embodiment, the default Optimized model further includes energy storage device maximum charge-discharge electric power constraint condition
And/or power system transient stability constraint condition.
Specifically, energy storage device has been generally comprised in isolated power, it is extra for providing spare energy and storage
Energy, carrying out regulation to the energy of pulse load in the system containing energy storage device is, introduces storage in default Optimized model
It is more accurate that energy equipment maximum charge-discharge electric power constraint condition can be regulating strategy.Meanwhile it being introduced in default Optimized model
Power system transient stability constraint condition can theoretically guarantee that obtained solution can guarantee the stabilization of isolated power
Property.It should be noted that in embodiments of the present invention, presetting can only include the charge and discharge of energy storage device maximum in Optimized model respectively
Electrical power constraint condition or power system transient stability constraint condition, or simultaneously comprising the two.
Based on the above embodiment, the energy storage device maximum charge-discharge electric power constraint condition are as follows: within a preset period of time, institute
The maximum value and the isolated power for stating the total charge power curve of multiple super capacitors distribute to the multiple pulse load
Maximum power absolute value of the difference, no more than the maximum charge-discharge electric power of the energy storage device, expression is as follows:
Wherein, T is preset time period, and n is the quantity of the multiple pulse load, and charge (i) indicates that i-th kind of pulse is negative
Carry the charge power curve of corresponding super capacitor, PMCThe multiple pulse load is distributed to most for the isolated power
It is high-power, BlimitFor the maximum charge-discharge electric power of the energy storage device.
Specifically, in the isolated power for including energy storage device, in order to keep the solution of default Optimized model more quasi-
Really, need to introduce energy storage device maximum charge-discharge electric power constraint condition.Needed for super capacitor maximum power is less than pulse load
When power, energy storage device serves as backup power source role, supplements energy difference.Needed for super capacitor maximum power is greater than pulse load
When power, energy storage device is for storing extra energy.
Based on the above embodiment, when in the isolated power including energy storage device, the Transient Stability Constraints
Condition are as follows: the maximum value of the multiple total charge power curve of super capacitor is exhausted with the sum of the discharge curve of the energy storage device
To value, no more than the constant PStable using stability criteria determined off-linelimit, expression is as follows:
When not including energy storage device in the isolated power, the Transient Stability Constraints condition are as follows: described more
The absolute value of the maximum value of a total charge power curve of super capacitor, no more than the constant using stability criteria determined off-line
PStablelimit, expression is as follows:
Wherein, T is preset time period, and n is the quantity of the multiple pulse load, and charge (i) indicates that i-th kind of pulse is negative
The charge power curve of corresponding super capacitor is carried, B (t) is the discharge curve of the energy storage device, PStablelimitTo utilize
The constant of stability criteria determined off-line.
Specifically, Transient Stability Constraints condition is by constraint condition σsystemσ in < 1systemIt is each subsystem in system
Parameter γ1,…,γmFunction.It removes outside pulse load, (γ known to the input output stability of sub-systemsm-n+1,…
γm), different classes of pulse load transient stability gain off-line simulation measurement result is portrayed as γ1,…,γn.According to input and output
Stability criteria, σsystemThe constraint condition of < 1 is converted into Pcombine≤PStablelimit.It is to be appreciated that above-mentioned conversion process
For the common knowledge of this field, therefore details are not described herein again.
When in the isolated power including energy storage device, PcombineIt is filled for the super capacitor of n kind pulse load
The maximum value of the sum of electrical power takes absolute value with being superimposed for energy storage device charging and discharging curve, and expression formula is as follows:
Wherein, B (t) is energy storage device discharge curve, is curve given in advance.
Based on the above embodiment, before step S1, the method also includes:
At the time of obtaining the point that derivative in the charge power curve of each super capacitor is not present and correspond to, to be checked makes an inventory of is constituted
Set；
Obtaining from the point set to be checked makes the total charge power curve of the multiple super capacitor be maximized correspondence
At the time of.
Specifically, because the charge power curve of single super capacitor is that (i.e. the image of function is by one for piecewise linear function
The end to end composition of a little line segments), so the charge power summation curve of all super capacitors is also piecewise linear function, therefore most
Big value exists, and one is scheduled on the point (point that the image of function turns round) that derivative is not present.Because derivative is not deposited in summation curve
The point point that necessarily derivative is not present in some super capacitor charging curve, so need to only check all such points.Separately
Outside, by the size relation of maximum value two sides derivative it is recognised that need to only check trapezoidal upper bottom in each super capacitor charging curve
Two endpoints.
The aggregate expression for the point for needing to check is
Based on the above embodiment, step S1 is specifically included:
Using the PSO algorithm based on feasible solution retention strategy, the default Optimized model is solved, is obtained each super
The charging of grade capacitor enters moment and charging duration.
Further, the PSO algorithm based on feasible solution retention strategy includes:
Check whether each point after initialization meets constraint condition when initializing each point, after random initializtion each point, such as
Fruit is unsatisfactory for, then random initializtion again, until meeting constraint；
When updating position a little in iteration, if the new position being calculated is unsatisfactory for constraining, do not update.
Wherein, particle swarm optimization algorithm (Particle Swarm Optimization, PSO algorithm) by J.Kennedy and
R.C.Eberhart et al. is proposed, is one kind of evolution algorithm.PSO algorithm is used for solving optimization problem, and algorithm principle is imitated dynamic
The cluster activity of object is iterated using the heredity of nature and Selecting Mechanism and Procedure, globally optimal solution is searched in solution space.The calculation
Method, which is realized, to be easy, precision height, restrains fastly, shows superiority during solving practical problems.
As shown in figure 5, before algorithm starts, one group of solution of random initializtion, i.e., a group point in solution space.Every wheel iteration
When, the position of each point will carry out the update with randomness.Be utilized when update optimal location that group has searched and
The optimal location that the point has searched.
The formula for updating each spot speed and position is respectively
Wherein subscript indicates that the number of iterations, subscript indicate point,It is the speed of kth time iteration time point j,It is kth
The position of secondary iteration time point j,It is the optimal location of preceding k-1 iteration midpoint j, g(k-1)It is all in preceding k-1 iteration
The optimal location of point.W, C in formula1And C2It is iterative parameter set in advance,WithIt is equal in [0,1] section
The random number that even distribution generates.
The above particle swarm optimization algorithm is suitable for the optimization problem of unconfined condition.For constrained optimization problem, one
As for, use the method for penalty function to be added in constraint condition in objective function in the form of penalty term.Feasible solution can also be used
Retention strategy processing constrains, i.e., only updates the point for meeting and constraining when updating point in each iteration.
Specifically, as shown in fig. 6, in order to handle constraint, feasible solution retention strategy is added on the basis of PSO algorithm:
Satisfaction constraint is checked whether when initializing each point, after random initializtion, if conditions are not met, so random initializtion again, until
Meet constraint.When updating position a little in iteration, if the new position being calculated is unsatisfactory for constraining, just do not update.
The embodiment of the present invention is further described below by an example, it is possible to understand that, it is below only this hair
One example of bright embodiment, the embodiment of the present invention are not limited thereto.
1) parameter setting
Assuming that have 8 kinds of pulse loads in some isolated power, the default Optimized model of use are as follows:
s.t.
Parameter is arranged as follows: T is 600s (second), PMCIt is 50kW (kilowatt), BlimitIt is 50kW, PStablelimitIt is 65kW,
B (t) permanent is 25kW.Therefore, the set of constraints in Optimized model is equivalent to:
Wherein P1It is 0, P2It is 40kW.Assuming that the bound of each super capacitor charge power change rate is λ respectively1=
2kW/s and λ2=-4kW/s.The parameter of each pulse load is as shown in table 1.
Table 1
| Pulse load number | S(kJ, kilojoule) | r(s, second) | f |
| 1 | 100 | 5 | 10 |
| 2 | 200 | 7 | 25 |
| 3 | 150 | 10 | 18 |
| 4 | 130 | 6 | 13 |
| 5 | 180 | 8 | 16 |
| 6 | 160 | 9 | 20 |
| 7 | 110 | 6.5 | 8 |
| 8 | 140 | 11 | 19 |
2) solving result
PSO algorithm parameter based on feasible solution retention strategy are as follows: the quantity of point is N=500, and the number of iterations is M=4000,
Other parameters W=0.6, C1=C2=2.It is write with MATLAB (matrix labotstory, a software for mathematical computing) and improves PSO algorithm
Program, solve problem above, solved after 33.12 seconds, optimal value is 2069, and the results are shown in Table 2.It is protected based on feasible solution
For the iterative process for staying the PSO algorithm parameter of strategy to be as shown in fig. 7, wherein abscissa is the number of iterations, ordinate is target letter
Numerical value.
Table 2
| Pulse load number | w(s) | c(1)(s) | c(2)(s) | c(3)(s) |
| 1 | 2.44 | 3.48 | 10.35 | 11.68 |
| 2 | 16.37 | 12.54 | 6.22 | 5.16 |
| 3 | 3.37 | 12.52 | 4.61 | 11.98 |
| 4 | 5.32 | 8.53 | 12.65 | 3.76 |
| 5 | 19.91 | 8.87 | 16.17 | 5.96 |
| 6 | 0.43 | 41.56 | 24.03 | 1.52 |
| 7 | 26.82 | 14.94 | 14.13 | 4.23 |
| 8 | 1.04 | 7.33 | 8.00 | 4.77 |
As shown in Figure 8, it can be seen that in preset time range, charge power meets constraint.Also, by optimization, respectively
Charging process between a pulse load is effectively staggered so that the ability of the sending power of system and energy storage device obtain compared with
It adequately utilizes, the fluctuation of charge power summation is also smaller, shows that regulation of energy strategy of the present invention is effective.
3) algorithm effect is analyzed
In order to examine the optimality for finding out result based on the PSO algorithm of feasible solution retention strategy, in the result superposition with
Machine amount generates a large amount of new solutions, then checks feasibility and target function value, as shown in figure 9, illustrating result, (abscissa is
The maximum value of charge power summation, ordinate are target function values)
In Fig. 9 asterisk " * " indicate the PSO algorithm based on feasible solution retention strategy find out as a result, asterisk indicates online
The upper limit of charge power summation maximum value, thus asterisk the point in online left side be likely to meet constraint.As can be seen that random
In the solution (about 3000) of generation, the objective function of all points for meeting constraint is all significantly less than based on feasible solution retention strategy
PSO algorithm as a result, this illustrates the optimality of the result.
There is certain randomness in the solution time of PSO algorithm.It is examined using multiple solve by the way of observation solves temporal regularity
The solution time of PSO algorithm based on feasible solution retention strategy, pulse load type sum is changed simultaneously, each case solves 10
Secondary, the results are shown in Table 3, and therefore, the PSO algorithm based on feasible solution retention strategy can obtain a result within the acceptable time.
Table 3
| Pulse load type sum | Averagely solve time (s) | Maximum solves time (s) |
| 8 | 33.75 | 55.49 |
| 6 | 38.50 | 52.76 |
| 4 | 29.42 | 37.61 |
| 2 | 26.92 | 39.90 |
Figure 10 is pulse load energy regulator control system in a kind of isolated power provided in an embodiment of the present invention, the orphan
Vertical electric system includes multiple pulse loads and multiple super capacitors, the multiple pulse load and the multiple super capacitor
It corresponds, the system comprises: computing module 1 and regulation module 2.Wherein:
Computing module 1 is used to obtain each super capacitor in the multiple super capacitor by solving default Optimized model
Charging enter moment and charging duration, wherein the objective function of the default Optimized model is the multiple pulse load
The sum of income of powering maximum.Regulation module 2 is used to enter moment and charging duration according to the charging of each super capacitor, to each
The charge and discharge of super capacitor are controlled, to realize the regulation of energy to the multiple pulse load.
Pulse load energy regulator control system in a kind of isolated power provided in an embodiment of the present invention, by introducing target
Function is the maximum default Optimized model of the sum of power supply total revenue of all pulse loads in system, and according to the default optimization mould
Type solves the optimal charging process of the corresponding multiple super capacitors of multiple pulse loads in isolated power, to realize pair
The regulation of energy of multiple pulse loads in system regulates and controls pulse loads multiple in system according to default Optimized model, makes
It obtains regulating strategy and meets system requirements with theoretical guarantee, while multiple pulse loads progress energy tune suitable for system
Control.
The embodiment of the present invention discloses a kind of computer program product, and the computer program product is non-transient including being stored in
Computer program on computer readable storage medium, the computer program include program instruction, when described program instructs quilt
When computer executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example, default by solving
Optimized model, the charging for obtaining each super capacitor in the multiple super capacitor enter moment and charging duration, wherein described
The objective function of default Optimized model is the sum of the power supply income of the multiple pulse load maximum；According to each super capacitor
Charging enters moment and charging duration, controls the charge and discharge of each super capacitor, negative to the multiple pulse to realize
The regulation of energy of load.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage
Medium storing computer instruction, the computer instruction make the computer execute side provided by above-mentioned each method embodiment
Method, for example, by solving default Optimized model, obtain the charging access of each super capacitor in the multiple super capacitor
Moment and charging duration, wherein the objective function of the default Optimized model be the multiple pulse load power supply income it
And maximum；Enter moment and charging duration according to the charging of each super capacitor, the charge and discharge of each super capacitor are controlled
System, to realize the regulation of energy to the multiple pulse load.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. pulse load energy regulates and controls method in a kind of isolated power, the isolated power includes multiple pulse loads
And multiple super capacitors, the multiple pulse load and the multiple super capacitor correspond, which is characterized in that the side
Method includes:
S1, by solving default Optimized model, the charging for obtaining each super capacitor in the multiple super capacitor enters the moment
And charging duration, wherein the objective function of the default Optimized model be the sum of power supply income of the multiple pulse load most
Greatly；
Wherein, the expression formula of the default Optimized model is as follows:
fiThe single power supply income for indicating i-th kind of pulse load, is nonnegative constant, NiIt is i-th kind of pulse load in preset time T
Interior power supply number, it is not necessary to be integer, wherein
wiAt the time of indicating the super capacitor access system of i-th kind of pulse load, ciIndicate that i-th kind of pulse load is corresponding super
The single charge duration of capacitor, riIndicate the discharge time of the corresponding super capacitor of i-th kind of pulse load, riFor constant；
S2 enters moment and charging duration according to the charging of each super capacitor, controls to the charge and discharge of each super capacitor
System, to realize the regulation of energy to the multiple pulse load.
2. method according to claim 1, which is characterized in that the default Optimized model further includes energy storage device maximum charge and discharge
Electrical power constraint condition and/or power system transient stability constraint condition.
3. method according to claim 2, which is characterized in that the energy storage device maximum charge-discharge electric power constraint condition are as follows:
Within a preset period of time, the maximum value Yu the isolated power of the total charge power curve of the multiple super capacitor point
The absolute value of the difference of the maximum power of the multiple pulse load of dispensing, no more than energy storage device in the isolated power
Maximum charge-discharge electric power.
4. method according to claim 2, which is characterized in that when in the isolated power including energy storage device, institute
State Transient Stability Constraints condition are as follows:
The maximum value of the multiple total charge power curve of super capacitor is absolute with the sum of the discharge curve of the energy storage device
Value, no more than the constant PStable using stability criteria determined off-linelimit；
When not including energy storage device in the isolated power, the Transient Stability Constraints condition are as follows:
The absolute value of the maximum value of the multiple total charge power curve of super capacitor is surveyed offline no more than using stability criteria
Fixed constant PStablelimit。
5. according to claim 3 or 4 the methods, which is characterized in that before step S1, the method also includes:
At the time of obtaining the point that derivative in the charge power curve of each super capacitor is not present and correspond to, point set to be checked is constituted
It closes；
When acquisition makes the total charge power curve of the multiple super capacitor be maximized corresponding from the point set to be checked
It carves.
6. any one of -4 the method according to claim 1, which is characterized in that step S1 is specifically included:
Using the PSO algorithm based on feasible solution retention strategy, the default Optimized model is solved, obtains each super electricity
The charging of appearance enters moment and charging duration.
7. method according to claim 6, which is characterized in that the PSO algorithm based on feasible solution retention strategy includes:
Check whether each point after initialization meets constraint condition when initializing each point, after random initializtion each point, if not
Meet, then random initializtion again, until meeting constraint；
When updating position a little in iteration, if the new position being calculated is unsatisfactory for constraining, do not update.
8. pulse load energy regulator control system in a kind of isolated power, the isolated power includes multiple pulse loads
And multiple super capacitors, the multiple pulse load and the multiple super capacitor correspond, which is characterized in that the system
System includes:
Computing module, for by solving default Optimized model, obtaining filling for each super capacitor in the multiple super capacitor
It is electrically accessed moment and charging duration, wherein the objective function of the default Optimized model is the power supply of the multiple pulse load
The sum of income maximum；
Wherein, the expression formula of the default Optimized model is as follows:
fiThe single power supply income for indicating i-th kind of pulse load, is nonnegative constant, NiIt is i-th kind of pulse load in preset time T
Interior power supply number, it is not necessary to be integer, wherein
wiAt the time of indicating the super capacitor access system of i-th kind of pulse load, ciIndicate that i-th kind of pulse load is corresponding super
The single charge duration of capacitor, riIndicate the discharge time of the corresponding super capacitor of i-th kind of pulse load, riFor constant；
Regulation module fills each super capacitor for entering moment and charging duration according to the charging of each super capacitor
Electric discharge is controlled, to realize the regulation of energy to the multiple pulse load.
9. a kind of non-transient computer readable storage medium, which is characterized in that the non-transient computer readable storage medium is deposited
Computer instruction is stored up, the computer instruction makes the computer execute method as described in any one of claim 1 to 7.
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