CN109038569A - Power distribution network reconstruction method, device and system and computer readable storage medium - Google Patents
Power distribution network reconstruction method, device and system and computer readable storage medium Download PDFInfo
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Abstract
The application discloses a power distribution network reconstruction method which comprises the steps of generating a preset number of initial reconstruction schemes meeting preset operation conditions according to acquired power distribution network data information, then carrying out iterative updating optimization on the initial reconstruction schemes based on a Levis flight mode and a cuckoo search algorithm, obtaining a final current optimal reconstruction scheme when the updating optimization times reach a preset optimization upper limit, and further reconstructing a power distribution network based on the current optimal reconstruction scheme. The method can be used for efficiently optimizing and obtaining a more accurate optimal power distribution network reconstruction scheme so as to reconstruct the power distribution network. The application also discloses a power distribution network reconstruction device, a power distribution network reconstruction system and a computer readable storage medium, which have the beneficial effects.
Description
Technical field
This application involves distribution network technology field, in particular to a kind of reconstruction method of power distribution network further relates to a kind of power distribution network
Device, system and computer readable storage medium.
Background technique
Power distribution network may cause operational efficiency and power supply quality be not high to ask because the method for operation is improper at runtime
Topic, to influence the effectiveness of operation of power grid enterprises and the customer service quality of sale of electricity enterprise.By planning as a whole, power distribution network is adjustable to be opened
It puts row power distribution network reconfiguration into, is the important means for promoting power distribution network operational efficiency and power supply quality.As country continues to increase electricity
The dynamics of power system reform, electricity market are graduallyed relax control, especially in increment distribution business scope, a large amount of emerging sale of electricity companies with
Competition between traditional power grid enterprise is more fierce, and it is horizontal to the operation management of power distribution network greatly to test power grid enterprises, because
This, needs more to combine practical operation situation, and power distribution network optimization operation is realized by power distribution network reconfiguration.
In the prior art, generally by cuckoo searching algorithm (Cuckoo search, CS) to multiple power distribution network reconfiguration sides
Case carries out optimizing processing, optimal power distribution network reconfiguration scheme is obtained, to realize the reconstruct of power distribution network.Wherein, cuckoo searching algorithm
Be it is a kind of imitation cuckoo by host's Bird's Nest hatch and bring up offspring parasitic nestling behavior develop made of optimizing algorithm, have
For body, cuckoo takes advantage of the opportunity that host bird is looked for food outside, and cuckoo bird egg is produced host's Bird's Nest in other species；Cuckoo children
After bird birth, other bird eggs in same Bird's Nest can be released to Bird's Nest, and issue the cry louder than host birdling and attract to obtain
More feedings；When host bird finds strange bird egg can be released to Bird's Nest, or abandon Bird's Nest simultaneously there are when strange bird egg in Bird's Nest
It finds place and newly builds Bird's Nest；As a result, during this is constantly competed, the bird egg of cuckoo and birdling cry are towards simulation
The direction of host bird is developed, to fight the resolution capability that host bird is constantly evolved.It therefore, can be real based on cuckoo searching algorithm
Now the optimizing of multiple power distribution network reconfiguration schemes is handled, is realized with further obtaining optimal power distribution network reconfiguration scheme with power distribution network
Reconstruct.
However, optimal power distribution network reconfiguration scheme is obtained there are problems based on original cuckoo searching algorithm optimizing,
When carrying out initial operation, since the randomness of its initialized location is larger, corresponding final search precision is lower,
The case where being easy to appear local optimum, to be difficult to obtain real optimal power distribution network reconfiguration scheme；In addition, being searched in cuckoo
The iteration later period of algorithm, due to its convergence rate problem that is slower, and causing Searching efficiency lower.
Therefore, how optimizing obtains more accurate optimal power distribution network reconfiguration scheme, to realize the reconstruct to power distribution network
Journey, while improving Searching efficiency is those skilled in the art's urgent problem to be solved.
Summary of the invention
The purpose of the application is to provide a kind of reconstruction method of power distribution network, this method can greater efficiency optimizing obtain it is more smart
True optimal power distribution network reconfiguration scheme realizes the reconstruct to power distribution network；The another object of the application is to provide a kind of power distribution network weight
Structure device, system and computer readable storage medium all have above-mentioned beneficial effect.
In order to solve the above technical problems, this application provides a kind of reconstruction method of power distribution network, comprising:
The initial reconstitution scheme that predetermined quantity meets preset operating conditions is generated according to the power distribution network data information of acquisition；
Energy consumption calculation is carried out to each initial reconstitution scheme, obtains initial optimal reconfiguration scheme；
Using the initial optimal reconfiguration scheme as reference data, using Lay dimension offline mode to each initial reconstitution side
Case is updated, and obtains the first reconfiguration scheme that the predetermined quantity meets the preset operating conditions；
Energy consumption calculation is carried out to each first reconfiguration scheme, obtains the first optimal reconfiguration scheme；
Using the described first optimal reconfiguration scheme as reference data, based on cuckoo searching algorithm to each first reconstruct
Scheme is updated, and obtains the second reconfiguration scheme that the predetermined quantity meets the preset operating conditions；
Energy consumption calculation is carried out to each second reconfiguration scheme, obtains the second optimal reconfiguration scheme；
Judge to update whether optimizing number reaches the default optimizing upper limit；
If the update optimizing number reaches the default optimizing upper limit, using the described second optimal reconfiguration scheme as working as
Preceding optimal reconfiguration scheme, and power distribution network is reconstructed based on the current optimal reconfiguration scheme；
It is ginseng with the described second optimal reconfiguration scheme if the update optimizing number is not up to the default optimizing upper limit
Benchmark is examined, optimizing is re-started to each second reconfiguration scheme and is updated, until the update optimizing number reaches described pre-
If the optimizing upper limit, obtain the current optimal reconfiguration scheme, and based on the current optimal reconfiguration scheme to the power distribution network into
Row reconstruct.
Preferably, the preset operating conditions include:
The corresponding power distribution network of each reconfiguration scheme is all satisfied the radial method of operation；
The corresponding each load of each reconfiguration scheme is effectively powered.
Preferably, judge whether the corresponding power distribution network of each reconfiguration scheme is all satisfied the radial method of operation, comprising:
The interconnection switch number that closing or opening is in the corresponding power distribution network of each reconfiguration scheme is judged, with initial fortune
Whether the interconnection switch number in the corresponding power distribution network of row scheme in closing or opening is consistent；If consistent, meet the radiation
The shape method of operation.
Preferably, judge whether each load is effectively powered in the corresponding power distribution network of each reconfiguration scheme, comprising:
Load flow calculation is carried out to the corresponding power distribution network of each reconfiguration scheme, obtains each node voltage and each line power；
Judge whether each node voltage and each line power meet preset condition, if satisfied, then described each negative
Lotus is effectively powered.
Preferably, described that energy consumption calculation is carried out to each initial reconstitution scheme, obtain initial optimal reconfiguration scheme, packet
It includes:
It calculates and obtains the corresponding losses of distribution network of each initial reconstitution scheme；
It is calculated according to the losses of distribution network and obtains the corresponding losses of distribution network ratio of each initial reconstitution scheme；
Corresponding initial reconstitution scheme is as the initial optimal reconstruct when choosing the losses of distribution network than value minimum
Scheme.
Preferably, the losses of distribution network is obtained based on formula:
Wherein,For the losses of distribution network of i-th of initial reconstitution scheme；RjFor the fever equivalent resistance of route j；PjtFor
The active power of t period route j transmission；QjtFor the reactive power of t period route j transmission；VjtIt is leaned on for t period route j
The voltage value of nearly power end；T is the quantity of the period, and L is the quantity of the route；As i=0,It is described initial
The corresponding losses of distribution network of operating scheme.
Preferably, the losses of distribution network ratio is obtained based on formula:
Wherein, FiFor the corresponding losses of distribution network ratio of i-th of initial reconstitution scheme.
In order to solve the above technical problems, this application provides a kind of power distribution network reconfiguration devices, comprising:
Schemes generation module meets default operation item for generating predetermined quantity according to the power distribution network data information of acquisition
The initial reconstitution scheme of part；
First energy consumption calculation module obtains initial optimal for carrying out energy consumption calculation to each initial reconstitution scheme
Reconfiguration scheme；
First scheme update module, for tieing up flight mould using Lay using the initial optimal reconfiguration scheme as reference data
Formula is updated each initial reconstitution scheme, obtains the predetermined quantity and meets the first of the preset operating conditions
Reconfiguration scheme；
It is optimal to obtain first for carrying out energy consumption calculation to each first reconfiguration scheme for second energy consumption calculation module
Reconfiguration scheme；
Alternative plan update module, for being searched for based on cuckoo using the described first optimal reconfiguration scheme as reference data
Algorithm is updated each first reconfiguration scheme, obtains the predetermined quantity meets the preset operating conditions the
Two reconfiguration schemes；
It is optimal to obtain second for carrying out energy consumption calculation to each second reconfiguration scheme for third energy consumption calculation module
Reconfiguration scheme；
Optimizing times condition judgment module updates whether optimizing number reaches the default optimizing upper limit for judging；If so,
Into power distribution network reconfiguration module；If it is not, being then back to the first scheme update module, realize with the described second optimal reconstruct side
Case is reference data, re-starts optimizing to each second reconfiguration scheme and updates, until the update optimizing number reaches
The default optimizing upper limit；
The power distribution network reconfiguration module is used for using the described second optimal reconfiguration scheme as current optimal reconfiguration scheme, and
Power distribution network is reconstructed based on the current optimal reconfiguration scheme.
In order to solve the above technical problems, present invention also provides a kind of power distribution network reconfiguration systems, comprising:
Memory, for storing computer program；
Processor realizes reconstruction method of power distribution network described in any one of the above when for executing the computer program
Step.
In order to solve the above technical problems, this application provides a kind of computer readable storage medium, it is described computer-readable
Computer program is stored on storage medium, the computer program is realized described in any one of the above when being executed by processor
The step of reconstruction method of power distribution network.
A kind of reconstruction method of power distribution network provided herein, it is predetermined including being generated according to the power distribution network data information of acquisition
Quantity meets the initial reconstitution scheme of preset operating conditions；Energy consumption calculation is carried out to each initial reconstitution scheme, is obtained
Initial optimal reconfiguration scheme；Using the initial optimal reconfiguration scheme as reference data, using Lay dimension offline mode to each described
Initial reconstitution scheme is updated, and obtains the first reconfiguration scheme that the predetermined quantity meets the preset operating conditions；It is right
Each first reconfiguration scheme carries out energy consumption calculation, obtains the first optimal reconfiguration scheme；With the described first optimal reconfiguration scheme
For reference data, each first reconfiguration scheme is updated based on cuckoo searching algorithm, obtains the predetermined quantity
A the second reconfiguration scheme for meeting the preset operating conditions；Energy consumption calculation is carried out to each second reconfiguration scheme, is obtained
Second optimal reconfiguration scheme；Judge to update whether optimizing number reaches the default optimizing upper limit；If the update optimizing number reaches
The default optimizing upper limit, then using the described second optimal reconfiguration scheme as current optimal reconfiguration scheme, and based on described current
Power distribution network is reconstructed in optimal reconfiguration scheme；If the update optimizing number is not up to the default optimizing upper limit, with institute
Stating the second optimal reconfiguration scheme is reference data, re-starts optimizing to each second reconfiguration scheme and updates, until described
It updates optimizing number and reaches the default optimizing upper limit, obtain the current optimal reconfiguration scheme, and based on described current optimal
The power distribution network is reconstructed in reconfiguration scheme.
As it can be seen that reconstruction method of power distribution network provided herein, is matching the multiple of generation using cuckoo searching algorithm
It during reconfiguration of electric networks scheme carries out optimizing, is combined with Lay dimension offline mode (L é vy Flights, LF), is tieed up and flown by Lay
Row mode expands the search range of optimal power distribution network reconfiguration scheme, substantially increases the diversity of initialized location, effectively mentions
The high precision of cuckoo optimizing dynamic process, so as to avoid there is the case where local optimum；Cloth is also effectively increased simultaneously
The convergence rate in paddy bird searching algorithm later period, further improves Searching efficiency, to obtain optimal power distribution network reconfiguration scheme, thus
Realize the reconstruct to power distribution network.
A kind of power distribution network reconfiguration device, system and computer readable storage medium provided herein, all has above-mentioned
Beneficial effect, details are not described herein.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow diagram of reconstruction method of power distribution network provided herein；
Fig. 2 is a kind of flow diagram of power distribution network Calculation Method of Energy Consumption provided herein；
Fig. 3 is a kind of schematic diagram of power distribution network reconfiguration device provided herein；
Fig. 4 is a kind of schematic diagram of power distribution network reconfiguration system provided herein.
Specific embodiment
The core of the application is to provide a kind of reconstruction method of power distribution network, this method can greater efficiency optimizing obtain it is more smart
True optimal power distribution network reconfiguration scheme realizes the reconstruct to power distribution network；Another core of the application is to provide a kind of power distribution network weight
Structure device, system and computer readable storage medium, it may have above-mentioned beneficial effect.
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art
All other embodiment obtained without making creative work, shall fall in the protection scope of this application.
Referring to FIG. 1, Fig. 1 is a kind of flow diagram of reconstruction method of power distribution network provided herein, this method can
To include:
S1: the initial reconstitution side that predetermined quantity meets preset operating conditions is generated according to the power distribution network data information of acquisition
Case；
Specifically, the essential information of power distribution network can be obtained first, i.e., above-mentioned power distribution network data information, further, Ji Keji
The initial power distribution network reconfiguration scheme of predetermined quantity, i.e., above-mentioned initial reconstitution scheme are generated in the power distribution network data information.Wherein,
Above-mentioned power distribution network data information may include power distribution network topological structure, each feeder line capacity, each capacity of distribution transform, each load point predetermined time
It is respectively switched under active and idle curve, each route maximum transfer capacity, each node voltage bound, initial launch mode in section
The relevant informations such as state；For the duration of above-mentioned predetermined amount of time, the application can be one day or one hour etc. without limitation.
In addition, the quantity of the initial reconstitution scheme for above-mentioned generation, i.e., above-mentioned predetermined quantity can be based on actual conditions voluntarily by user
Setting, the application do not do unique restriction to it.
Wherein, it for the generation method of above-mentioned initial reconstitution scheme, can be realized based on cuckoo searching algorithm, due to each
The reconfiguration scheme of power distribution network is all to be made of the topological relation of its switch, therefore each scheme can be regarded as to a Bird's Nest, just
The predetermined quantity Bird's Nest of beginningization can be indicated with the state of each switch.Certainly, which is only that the application is mentioned
A kind of embodiment supplied, not uniquely.
It should be noted that above-mentioned each initial reconstitution scheme is to meet the scheme of preset operating conditions, that is, obtain
Each initial reconstitution scheme be can run, enforceable power distribution network reconfiguration scheme.
Optionally, above-mentioned preset operating conditions may include: the corresponding power distribution network of each reconfiguration scheme be all satisfied it is radial
The method of operation；The corresponding each load of each reconfiguration scheme is effectively powered.
Specifically, the reconfiguration scheme obtained for above steps is the reconfiguration scheme for meeting preset operating conditions, i.e.,
Each reconfiguration scheme is that can run, is enforceable.Wherein, corresponding preset operating conditions may include: firstly, each step is raw
At each reconfiguration scheme when power distribution network is reconstructed, be intended to meet the radial method of operation；Secondly, it is to be ensured that each step
When power distribution network is reconstructed, each load is intended to effectively be powered each reconfiguration scheme generated.
Preferably, judge whether the corresponding power distribution network of each reconfiguration scheme is all satisfied the radial method of operation, may include:
Judge the interconnection switch number that closing or opening is in the corresponding power distribution network of each reconfiguration scheme, it is corresponding with initial launch scheme
Whether the interconnection switch number in power distribution network in closing or opening is consistent；If consistent, meet the radial method of operation.
Specifically, each power distribution network reconfiguration scheme is made of switch topology relationship as, each scheme can be regarded to a bird
Nest, N number of Bird's Nest of initialization can be used each switch state to indicate.In practical projects, it has integrated and has examined when distribution network closed-loop design
Consider the more feasible radial method of operation, usually can only carry out grid switching operation, power distribution network reconfiguration scheme to interconnection switch
It can simplify to be indicated with interconnection switch state:
Wherein, TiIndicate i-th of Bird's Nest, i.e. i-th of reconfiguration scheme, i can value 1 arrive N, i.e., explanation shares N number of Bird's Nest,
I.e. N number of reconfiguration scheme；Each element in each Bird's Nest is that 0 or 1,0 expression switchs separating brake, and 1 indicates that switch closes a floodgate, power distribution network
B interconnection switch is shared in network.
Based on this, whether the power distribution network that verify after reconstruct meets the radial method of operation, then need to check based on each heavy
After power distribution network is reconstructed in structure scheme, wherein when interconnection switch number and original state in closure (or disconnect) whether one
It causes, that is, judges whether to meet following equation:
Wherein, C0Power distribution network is in the interconnection switch number of closure as under original state.
Preferably, judge that whether each load is effectively powered in the corresponding power distribution network of each reconfiguration scheme, can wrap
It includes: Load flow calculation being carried out to the corresponding power distribution network of each reconfiguration scheme, obtains each node voltage and each line power；Judge each section
Whether point voltage and each line power meet preset condition, if satisfied, then each load is effectively powered.
Specifically, to verify whether each load is effectively powered, it can be by carrying out trend to the power distribution network after reconstruct
It calculates, obtains each node voltage and each line power, check after power distribution network is reconstructed based on each reconfiguration scheme, power distribution network is each
Whether node voltage and each line power meet with lower inequality:
Wherein, VbtFor the voltage magnitude of t-th of period node b,WithThe voltage of respectively corresponding node is upper and lower
Limit；PjtFor t-th of period route j transmission active power,For the maximum transfer capacity of corresponding line.
S2: carrying out energy consumption calculation to each initial reconstitution scheme, obtains initial optimal reconfiguration scheme；
Specifically, after obtaining predetermined quantity and meeting the initial reconstitution scheme of preset operating conditions, it can be to based on each
The power distribution network of a initial reconstitution scheme reconstruct carries out energy consumption calculation, to obtain initial optimal reconfiguration scheme, and as reference base
Standard realizes subsequent optimizing processing.
Optionally, referring to FIG. 2, the process that Fig. 2 is a kind of power distribution network Calculation Method of Energy Consumption provided herein is illustrated
Scheme, energy consumption calculation is carried out to each initial reconstitution scheme in above-mentioned S2, obtains initial optimal reconfiguration scheme, may include:
S201: it calculates and obtains the corresponding losses of distribution network of each initial reconstitution scheme；
S202: it is calculated according to losses of distribution network and obtains the corresponding losses of distribution network ratio of each initial reconstitution scheme；
S203: corresponding initial reconstitution scheme is as initial optimal reconstruct side when choosing losses of distribution network than value minimum
Case.
Specifically, the Calculation Method of Energy Consumption of each initial reconstitution scheme can be realized based on losses of distribution network, can first calculate each
The corresponding losses of distribution network of power distribution network after the corresponding reconstruct of a initial reconstitution scheme, further obtains corresponding losses of distribution network
Than, and corresponding initial reconstitution scheme is chosen when losses of distribution network ratio is minimized as above-mentioned initial optimal reconfiguration scheme.
Preferably, losses of distribution network can be obtained based on formula:
Wherein,For the losses of distribution network of i-th of initial reconstitution scheme；RjFor the fever equivalent resistance of route j；PjtFor
The active power of t period route j transmission；QjtFor the reactive power of t period route j transmission；VjtIt is leaned on for t period route j
The voltage value of nearly power end；T is the quantity of period, and L is the quantity of route；As i=0,It is corresponding for initial launch scheme
Losses of distribution network.
Preferably, losses of distribution network ratio can be obtained based on formula:
Wherein, FiFor the corresponding losses of distribution network ratio of i-th of initial reconstitution scheme.
At this point, F can be chosen from N number of Bird's NestiThe smallest Bird's Nest is as initial optimal Bird's Nest Ti best, i.e., above-mentioned initial
Optimal reconfiguration scheme, meanwhile, the FiInitial value F as optimal objective functioni best.Wherein, above-mentioned Pjt、Qjt、VjtIt can root
Show that details are not described herein by the application according to the Load flow calculation of day part t under initial reconstitution scheme i.
S3: using initial optimal reconfiguration scheme as reference data, using Lay dimension offline mode to each initial reconstitution scheme into
Row updates, and obtains the first reconfiguration scheme that the predetermined quantity meets preset operating conditions；
Specifically, after obtaining initial optimal reconfiguration scheme, i.e., using Lay dimension offline mode to except above-mentioned initial optimal
Other each initial reconstitution schemes except reconfiguration scheme are updated processing, to obtain the first reconfiguration scheme of predetermined quantity.
Wherein, the flight of Lay dimension is a kind of random walk, and flight interval obeys power law distribution, is flown in intelligent optimization algorithm using Lay dimension
Row mode can effectively expand search range, and the multiplicity for increasing particle populations is new, and Lay is tieed up offline mode and cuckoo as a result,
Searching algorithm combines, and substantially increases the diversity of initialized location, effectively increases the essence of cuckoo optimizing dynamic process
Degree.
Specifically, tieing up offline mode based on Lay to the initial reconstitution scheme in addition to above-mentioned initial optimal reconfiguration scheme
When being updated processing, it can be updated according to the following formula:
Wherein, α > 0 is step factor；Expression rounds up to each element in vector, while ensuring its value not
Greater than 1 and it is not less than 0, particularly, value is taken as 1 when being greater than 1, is taken as 0 when less than 0；Indicate each member to the right and left vector
Element is corresponding to carry out product operation；L is the B dimensional vector for indicating Lay dimension flight coefficient, each of which element is random number, below with the
For p ties up component (p=1,2 ..., B), meet following formula:
Wherein, stochastic variable xpAnd ypThe normal distribution that mean value is 0 is obeyed, standard deviation is respectively as follows:
σyp(β)=1；
Wherein, β is distribution factor, and value range is 0.3≤β≤1.99, determines value for it, can be sought according to actual
The demands such as excellent speed, optimizing result quality are chosen in its value range in conjunction with specific experience；Γ () is standard gal
Ma distribution function.
In addition, each first reconfiguration scheme that above-mentioned steps obtain is both needed to ensure to meet preset operating conditions, it is each to ensure
A first reconfiguration scheme be can run, enforceable power distribution network reconfiguration scheme can refer to aforementioned each its verification mode
The checking procedure of initial reconstitution scheme, details are not described herein.
S4: energy consumption calculation is carried out to each first reconfiguration scheme, obtains the first optimal reconfiguration scheme；
Specifically, after obtaining predetermined quantity and meeting the first reconfiguration scheme of preset operating conditions, it can be to based on each
The power distribution network of a first reconfiguration scheme reconstruct carries out energy consumption calculation, to obtain the first optimal reconfiguration scheme, and as reference base
Standard realizes subsequent optimizing processing.
S5: using the first optimal reconfiguration scheme as reference data, based on cuckoo searching algorithm to each first reconfiguration scheme
It is updated, obtains the second reconfiguration scheme that predetermined quantity meets preset operating conditions；
Specifically, after obtaining the first optimal reconfiguration scheme, i.e., using cuckoo searching algorithm again to except above-mentioned the
Other each first reconfiguration schemes except one optimal reconfiguration scheme are updated processing, to obtain the second reconstruct of predetermined quantity
Scheme, namely simulation host bird carry out the first reconfiguration scheme of predetermined quantity in such a way that certain probability finds exotic bird eggs
Update processing obtains the second reconfiguration scheme of predetermined quantity.
Specifically, based on cuckoo searching algorithm to each first weight in addition to the above-mentioned first optimal reconfiguration scheme
When structure scheme is updated processing, it can be updated according to the following formula:
Wherein, ηjThe marker bit that exotic bird eggs are found for host bird, can be based on host during each iterative processing
The probability of bird discovery exotic bird eggs regenerates；uj、vj、wjIt is B dimension random vector, the area each of which element value range Jun
Between between [0,1], and obey mean value be 0, the standardized normal distribution N (0,1) that standard deviation is 1；In addition, ηjObey following two-value
Distribution:
Wherein, random number q value range is between section [0,1], and obeys the normal state point that mean value is 0.5, standard deviation is 1
Cloth N (0.5,1)；Pd The probability of exotic bird eggs is found for host bird.
Wherein, each second reconfiguration scheme that above-mentioned steps obtain is both needed to ensure to meet preset operating conditions, each to ensure
A second reconfiguration scheme be can run, enforceable power distribution network reconfiguration scheme can refer to aforementioned each its verification mode
The checking procedure of initial reconstitution scheme, details are not described herein.
S6: energy consumption calculation is carried out to each second reconfiguration scheme, obtains the second optimal reconfiguration scheme；
Specifically, after obtaining predetermined quantity and meeting the second reconfiguration scheme of preset operating conditions, it can be to based on each
The power distribution network of a second reconfiguration scheme reconstruct carries out energy consumption calculation, to obtain the second optimal reconfiguration scheme, thus completes primary
The optimizing processing that offline mode and cuckoo searching algorithm are completely tieed up based on Lay, further can be according to the second optimal reconstruct
Scheme carries out subsequent processing.
S7: judge to update whether optimizing number reaches the default optimizing upper limit；If so, into S8；If it is not, being then back to
S3；
S8: using the second optimal reconfiguration scheme as current optimal reconfiguration scheme, and based on current optimal reconfiguration scheme to matching
Power grid is reconstructed.
Specifically, processing can be iterated using S3 to S6 as loop body, after successively having executed the loop body, can sentence
It is disconnected to update whether optimizing number has reached the default optimizing upper limit, if not up to, can return to S3, with the second optimal reconfiguration scheme
For reference data, Lay dimension offline mode and cuckoo searching algorithm are based on again to the second reconfiguration scheme of predetermined quantity of acquisition
It is updated processing, until updating optimizing number reaches the default optimizing upper limit, to obtain current optimal reconfiguration scheme；If update is sought
Excellent number has reached the default optimizing upper limit, then can be using the second of acquisition the optimal reconfiguration scheme as current reconfiguration scheme；Further, i.e.,
Subsequent power distribution network reconfiguration operation can be carried out according to current reconfiguration scheme.Wherein, above-mentioned update optimizing number is with S3 to S6
As the number that loop body is iterated, the above-mentioned default optimizing upper limit can be based on actual conditions sets itself, the application by user
Without limitation to it.In addition, the default optimizing upper limit is higher, cuckoo optimizing result precision is higher, but time-consuming relatively long；It is default
The optimizing upper limit is lower, and cuckoo optimizing result precision is also lower, but time-consuming relatively short.
Reconstruction method of power distribution network provided herein, in multiple power distribution network weights using cuckoo searching algorithm to generation
During structure scheme carries out optimizing, is combined with Lay dimension offline mode (L é vy Flights, LF), offline mode is tieed up by Lay
The search range for expanding optimal power distribution network reconfiguration scheme, substantially increases the diversity of initialized location, effectively increases cloth
The precision of paddy bird optimizing dynamic process, so as to avoid there is the case where local optimum；Cuckoo is also effectively increased simultaneously to search
The convergence rate in rope algorithm later period, further improves Searching efficiency, to obtain optimal power distribution network reconfiguration scheme, thus realization pair
The reconstruct of power distribution network.
To solve the above problems, referring to FIG. 3, Fig. 3 is a kind of signal of power distribution network reconfiguration device provided herein
Figure, the apparatus may include:
Schemes generation module 10 meets default operation for generating predetermined quantity according to the power distribution network data information of acquisition
The initial reconstitution scheme of condition；
First energy consumption calculation module 20 obtains initial optimal heavy for carrying out energy consumption calculation to each initial reconstitution scheme
Structure scheme；
First scheme update module 30, for tieing up offline mode using Lay using initial optimal reconfiguration scheme as reference data
Each initial reconstitution scheme is updated, the first reconfiguration scheme that predetermined quantity meets preset operating conditions is obtained；
It is optimal heavy to obtain first for carrying out energy consumption calculation to each first reconfiguration scheme for second energy consumption calculation module 40
Structure scheme；
Alternative plan update module 50, for being calculated based on cuckoo search using the first optimal reconfiguration scheme as reference data
Method is updated each first reconfiguration scheme, obtains the second reconfiguration scheme that predetermined quantity meets preset operating conditions；
It is optimal heavy to obtain second for carrying out energy consumption calculation to each second reconfiguration scheme for third energy consumption calculation module 60
Structure scheme；
Optimizing times condition judgment module 70 updates whether optimizing number reaches the default optimizing upper limit for judging；If so,
Then enter power distribution network reconfiguration module 80；If it is not, being then back to first scheme update module 30, realize with the second optimal reconfiguration scheme
For reference data, optimizing is re-started to each second reconfiguration scheme and is updated, reached in default optimizing until updating optimizing number
Limit；
Power distribution network reconfiguration module 80 is used for using the second optimal reconfiguration scheme as current optimal reconfiguration scheme, and is based on working as
Power distribution network is reconstructed in preceding optimal reconfiguration scheme.
As a kind of preferred embodiment, above-mentioned first energy consumption calculation module 20 may include:
First computational submodule obtains the corresponding losses of distribution network of each initial reconstitution scheme for calculating；
Second computational submodule obtains the corresponding power distribution network of each initial reconstitution scheme for calculating according to losses of distribution network
Loss ratio；
Scheme selection submodule, corresponding initial reconstitution scheme is as just when for choosing losses of distribution network than value minimum
Begin optimal reconfiguration scheme.
Above method embodiment is please referred to for the introduction of device provided by the present application, this will not be repeated here by the application.
To solve the above problems, referring to FIG. 4, Fig. 4 is a kind of signal of power distribution network reconfiguration system provided herein
Figure, the system can include:
Memory 1, for storing computer program；
Processor 2 can realize following steps when for executing computer program:
The initial reconstitution scheme that predetermined quantity meets preset operating conditions is generated according to the power distribution network data information of acquisition；
Energy consumption calculation is carried out to each initial reconstitution scheme, obtains initial optimal reconfiguration scheme；It is reference with initial optimal reconfiguration scheme
Benchmark is updated each initial reconstitution scheme using Lay dimension offline mode, obtains predetermined quantity and meets default operation item
First reconfiguration scheme of part；Energy consumption calculation is carried out to each first reconfiguration scheme, obtains the first optimal reconfiguration scheme；Most with first
Excellent reconfiguration scheme is reference data, is updated based on cuckoo searching algorithm to each first reconfiguration scheme, and predetermined number is obtained
Amount meets the second reconfiguration scheme of preset operating conditions；Energy consumption calculation is carried out to each second reconfiguration scheme, obtains second most
Excellent reconfiguration scheme；Judge to update whether optimizing number reaches the default optimizing upper limit；If updating optimizing number to reach in default optimizing
Limit, then using the second optimal reconfiguration scheme as current optimal reconfiguration scheme, and based on currently optimal reconfiguration scheme to power distribution network into
Row reconstruct；If the not up to default optimizing upper limit of optimizing number is updated, using the second optimal reconfiguration scheme as reference data, to each
Second reconfiguration scheme re-starts optimizing update, until updating optimizing number reaches the default optimizing upper limit, obtains current optimal heavy
Structure scheme, and power distribution network is reconstructed based on current optimal reconfiguration scheme.
Above method embodiment is please referred to for the introduction of system provided by the present application, this will not be repeated here by the application.
To solve the above problems, present invention also provides a kind of computer readable storage medium, the computer-readable storage
It is stored with computer program on medium, can realize following steps when computer program is executed by processor:
The initial reconstitution scheme that predetermined quantity meets preset operating conditions is generated according to the power distribution network data information of acquisition；
Energy consumption calculation is carried out to each initial reconstitution scheme, obtains initial optimal reconfiguration scheme；It is reference with initial optimal reconfiguration scheme
Benchmark is updated each initial reconstitution scheme using Lay dimension offline mode, obtains predetermined quantity and meets default operation item
First reconfiguration scheme of part；Energy consumption calculation is carried out to each first reconfiguration scheme, obtains the first optimal reconfiguration scheme；Most with first
Excellent reconfiguration scheme is reference data, is updated based on cuckoo searching algorithm to each first reconfiguration scheme, and predetermined number is obtained
Amount meets the second reconfiguration scheme of preset operating conditions；Energy consumption calculation is carried out to each second reconfiguration scheme, obtains second most
Excellent reconfiguration scheme；Judge to update whether optimizing number reaches the default optimizing upper limit；If updating optimizing number to reach in default optimizing
Limit, then using the second optimal reconfiguration scheme as current optimal reconfiguration scheme, and based on currently optimal reconfiguration scheme to power distribution network into
Row reconstruct；If the not up to default optimizing upper limit of optimizing number is updated, using the second optimal reconfiguration scheme as reference data, to each
Second reconfiguration scheme re-starts optimizing update, until updating optimizing number reaches the default optimizing upper limit, obtains current optimal heavy
Structure scheme, and power distribution network is reconstructed based on current optimal reconfiguration scheme.
The computer readable storage medium may include: USB flash disk, mobile hard disk, read-only memory (Read-Only
Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. is various to deposit
Store up the medium of program code.
Above method embodiment is please referred to for the introduction of computer readable storage medium provided by the present application, the application exists
This is not repeated them here.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
?.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond scope of the present application.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Reconstruction method of power distribution network provided herein, device, system and computer readable storage medium are carried out above
It is discussed in detail.Specific examples are used herein to illustrate the principle and implementation manner of the present application, above embodiments
Explanation be merely used to help understand the present processes and its core concept.It should be pointed out that for the common of the art
For technical staff, under the premise of not departing from the application principle, can also to the application, some improvement and modification can also be carried out, these
Improvement and modification also fall into the protection scope element of the claim of this application.
Claims (10)
1. a kind of reconstruction method of power distribution network characterized by comprising
The initial reconstitution scheme that predetermined quantity meets preset operating conditions is generated according to the power distribution network data information of acquisition；
Energy consumption calculation is carried out to each initial reconstitution scheme, obtains initial optimal reconfiguration scheme；
Using the initial optimal reconfiguration scheme as reference data, using Lay dimension offline mode to each initial reconstitution scheme into
Row updates, and obtains the first reconfiguration scheme that the predetermined quantity meets the preset operating conditions；
Energy consumption calculation is carried out to each first reconfiguration scheme, obtains the first optimal reconfiguration scheme；
Using the described first optimal reconfiguration scheme as reference data, based on cuckoo searching algorithm to each first reconfiguration scheme
It is updated, obtains the second reconfiguration scheme that the predetermined quantity meets the preset operating conditions；
Energy consumption calculation is carried out to each second reconfiguration scheme, obtains the second optimal reconfiguration scheme；
Judge to update whether optimizing number reaches the default optimizing upper limit；
If the update optimizing number reaches the default optimizing upper limit, using the described second optimal reconfiguration scheme as it is current most
Excellent reconfiguration scheme, and power distribution network is reconstructed based on the current optimal reconfiguration scheme；
It is with reference to base with the described second optimal reconfiguration scheme if the update optimizing number is not up to the default optimizing upper limit
Standard re-starts optimizing to each second reconfiguration scheme and updates, until the update optimizing number reaches described preset and seeks
The excellent upper limit obtains the current optimal reconfiguration scheme, and carries out weight to the power distribution network based on the current optimal reconfiguration scheme
Structure.
2. reconstruction method of power distribution network as described in claim 1, which is characterized in that the preset operating conditions include:
The corresponding power distribution network of each reconfiguration scheme is all satisfied the radial method of operation；
Each load is effectively powered in the corresponding power distribution network of each reconfiguration scheme.
3. reconstruction method of power distribution network as claimed in claim 2, which is characterized in that judge the corresponding power distribution network of each reconfiguration scheme
Whether the radial method of operation is all satisfied, comprising:
The interconnection switch number that closing or opening is in the corresponding power distribution network of each reconfiguration scheme is judged, with initial launch side
Whether the interconnection switch number in the corresponding power distribution network of case in closing or opening is consistent；If consistent, meet the radial fortune
Line mode.
4. reconstruction method of power distribution network as claimed in claim 2, which is characterized in that judge the corresponding power distribution network of each reconfiguration scheme
In each load whether effectively powered, comprising:
Load flow calculation is carried out to the corresponding power distribution network of each reconfiguration scheme, obtains each node voltage and each line power；
Judge whether each node voltage and each line power meet preset condition, if satisfied, then each load is equal
Effectively powered.
5. reconstruction method of power distribution network as described in claim 1, which is characterized in that it is described to each initial reconstitution scheme into
Row energy consumption calculation obtains initial optimal reconfiguration scheme, comprising:
It calculates and obtains the corresponding losses of distribution network of each initial reconstitution scheme；
It is calculated according to the losses of distribution network and obtains the corresponding losses of distribution network ratio of each initial reconstitution scheme；
Corresponding initial reconstitution scheme is as the initial optimal reconfiguration scheme when choosing the losses of distribution network than value minimum.
6. reconstruction method of power distribution network as claimed in claim 5, which is characterized in that obtain the losses of distribution network based on formula:
Wherein,For the losses of distribution network of i-th of initial reconstitution scheme；RjFor the fever equivalent resistance of route j；PjtWhen for t
The active power of section route j transmission；QjtFor the reactive power of t period route j transmission；VjtIt is t period route j close to electricity
The voltage value of source；T is the quantity of the period, and L is the quantity of the route；As i=0,For the initial launch
The corresponding losses of distribution network of scheme.
7. reconstruction method of power distribution network as claimed in claim 6, which is characterized in that obtain the losses of distribution network based on formula
Than:
Wherein, FiFor the corresponding losses of distribution network ratio of i-th of initial reconstitution scheme.
8. a kind of power distribution network reconfiguration side's device characterized by comprising
Schemes generation module meets preset operating conditions for generating predetermined quantity according to the power distribution network data information of acquisition
Initial reconstitution scheme；
First energy consumption calculation module obtains initial optimal reconstruct for carrying out energy consumption calculation to each initial reconstitution scheme
Scheme；
First scheme update module, for tieing up offline mode pair using Lay using the initial optimal reconfiguration scheme as reference data
Each initial reconstitution scheme is updated, and obtains the first reconstruct that the predetermined quantity meets the preset operating conditions
Scheme；
Second energy consumption calculation module obtains the first optimal reconstruct for carrying out energy consumption calculation to each first reconfiguration scheme
Scheme；
Alternative plan update module, for being based on cuckoo searching algorithm using the described first optimal reconfiguration scheme as reference data
Each first reconfiguration scheme is updated, the second weight that the predetermined quantity meets the preset operating conditions is obtained
Structure scheme；
Third energy consumption calculation module obtains the second optimal reconstruct for carrying out energy consumption calculation to each second reconfiguration scheme
Scheme；
Optimizing times condition judgment module updates whether optimizing number reaches the default optimizing upper limit for judging；If so, into
Power distribution network reconfiguration module；If it is not, being then back to the first scheme update module, realization is with the described second optimal reconfiguration scheme
Reference data re-starts optimizing to each second reconfiguration scheme and updates, until the update optimizing number reaches described
The default optimizing upper limit；
The power distribution network reconfiguration module is used for using the described second optimal reconfiguration scheme as current optimal reconfiguration scheme, and is based on
Power distribution network is reconstructed in the current optimal reconfiguration scheme.
9. a kind of power distribution network reconfiguration system characterized by comprising
Memory, for storing computer program；
Processor realizes power distribution network reconfiguration as claimed in any one of claims 1 to 7 when for running the computer program
The step of method.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program, the computer program realize power distribution network reconfiguration side as claimed in any one of claims 1 to 7 when being executed by processor
The step of method.
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Application publication date: 20181218 |