CN110059094A - Partition method, medium and the equipment of active distribution network distributions estimation - Google Patents
Partition method, medium and the equipment of active distribution network distributions estimation Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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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
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Abstract
Present disclose provides partition method, medium and the equipment of a kind of estimation of active distribution network distributions, analyze the topological structure of active distribution network, are layered using branch line top and bottom process realization branch and realize node serial number；Postorder traversal is carried out to the power distribution network for completing number using the Depth Priority Algorithm of tree, power distribution network subregion is realized as overlapping nodes using the node for configuring synchronized phasor measurement unit according to area principle；Subregion decoupling is carried out to power distribution network at overlapping nodes, corresponding branch power metric data is converted into virtual injecting power metric data, carries out distributions estimation to the power distribution network after decoupling, is conducive to the promotion of distributions estimation calculated performance.
Description
Technical field
The disclosure belongs to field of power system, is related to a kind of partition method of active distribution network distributions estimation, is situated between
Matter and equipment.
Background technique
Only there is provided background technical informations relevant to the disclosure for the statement of this part, it is not necessary to so constitute first skill
Art.
As the form of clean energy resource power supply in a distributed manner accesses power distribution network, there is asking for bi-directional current in conventional electrical distribution net
Topic；The upgrading of Distribution Management System so that regulation in real time may be implemented actively in the controllable resources such as distributed generation resource, controllable burden,
And then being conducive to optimize the operating condition of power distribution network, passive power distribution network is gradually changed into active distribution network.Compared to conventional electrical distribution
Net, the main feature of active distribution network, which is embodied in it, can manage trend by flexible network topology structure, to play a game
The controllable resources in portion carry out active control and active management.Actively effective control is carried out with management to the real-time of data and essence
True property has higher requirements, i.e., need to have sensing capability precisely in real time to the operating status of power distribution network.Distribution network status estimation is sense
The effective way for knowing distribution Running State, according to power distribution network installation measurement equipment obtain real-time measurement information and according to
The pseudo- metric data that load prediction or non-telemetry obtain estimates complete essence using suitable filtering method to metric data
True reliable status information offers precise data support for other advanced applications in Distribution Management System.
Active distribution network has larger network size, asymmetrical three-phase outstanding problem, distributed generation resource and controllable burden to seep
The features such as rate is high thoroughly, so that distribution network status estimation calculation scale is big；And active distribution network is to the real-time and essence of estimated data
True property requires higher, and traditional centralized state estimation faces larger challenge in computational efficiency, and distributions estimation can be with
Large scale system is divided into multiple small-scale subregions, using computing architecture concurrently or sequentially, effectively reduces and calculates rule
Mould, to improve computational efficiency.It carries out distributions estimation and is divided into several subregions firstly the need of by active distribution network, such as
What realizes that the power distribution network subregion of high cohesion lower coupling is the important foundation for carrying out distributions estimation.Division result is by direct shadow
The calculated performance of distributions estimation is rung, therefore the optimization subregion for studying power distribution network is significant.
Understand according to inventor, the partition method of current active distribution network distributions estimation has the following problems:
(1) synchronized phasor measurement unit (Phasor Measurement Unit, PMU) is not accounted for active distribution network
The influence of distributions estimation；
(2) area principle suitable for the estimation of active distribution network distributions is not provided；
(3) partition method for the estimation of active distribution network distributions is not provided.
Summary of the invention
The disclosure to solve the above-mentioned problems, propose a kind of estimation of active distribution network distributions partition method,
The characteristics of medium and equipment, the disclosure is estimated according to active distribution network and its distributions, provide area principle, including sub-district
Domain number, subregion harmony and sub-district domain connectivity, ornamental；Configuration based on topological analysis and synchronized phasor measurement unit
Situation proposes the partition method for being suitable for distributions estimation, and the rationalization partition of active distribution network is realized according to area principle.
According to some embodiments, the disclosure is adopted the following technical scheme that
A kind of partition method of active distribution network distributions estimation, comprising the following steps:
The topological structure for analyzing active distribution network is layered using branch line top and bottom process realization branch and realizes node serial number；
Using tree Depth Priority Algorithm to complete number power distribution network carry out postorder traversal, according to area principle with
The node for configuring synchronized phasor measurement unit realizes power distribution network subregion as overlapping nodes；
Subregion decoupling is carried out to power distribution network at overlapping nodes, corresponding branch power metric data is converted into virtual note
Enter power measurement data, distributions estimation is carried out to the power distribution network after decoupling.
As possible embodiment, using branch line top and bottom process, a main feeder is selected in power distribution network, the feeder line branch
The number of plies is 1；Its number of plies of the branch being connected with main feeder is 2；And so on realize the layerings of all branches.
As possible embodiment, the branch layering realizes that node serial number has at least four elements, respectively represents
The node original number of system, the level number of branch line where the node, the node serial number where the node on branch line should
Whether node installs the expression number of synchronized phasor measurement unit.
As possible embodiment, the area principle according to distributions estimate parallel computation the characteristics of and subregion
Influence to distributions estimation calculated performance obtains.
As possible embodiment, the area principle specifically include reasonable subregion number, sub-district domain connectivity with
Ornamental and subregion interstitial content harmony and measurement redundancy are harmonious.
As possible embodiment, the process of the traversal search includes:
(1) selection search start node；
(2) from initial ranging node according to postorder traversal sequential search, until the section of installation synchronized phasor measurement unit
When point, pause searches for and judges whether the above-mentioned node searched for can form a sub-regions, that is, judges search node number
Whether mesh, if interstitial content is less than setting value, continues to search for forward, otherwise above-mentioned node forms multiple sons in given range
Region；
(3) node for configuring synchronized phasor measurement unit retains, again selection search start node；
(4) step (1) to (3) are repeated, until all node traverses are completed.
As possible embodiment, subregion is carried out to power distribution network at the overlapping nodes of configuration synchronized phasor measurement unit
Decoupling, the node are also referred to as boundary node, for the information exchange in distributions estimation；Corresponding branch power conversion
For the virtual injecting power of boundary node after decoupling.
As possible embodiment, the estimation of power distribution network distributions is carried out using parallel calculating method.
A kind of computer readable storage medium, wherein being stored with a plurality of instruction, described instruction is suitable for by terminal device
Reason device loads and executes the partition method of the active distribution network distributions estimation.
A kind of terminal device, including processor and computer readable storage medium, processor is for realizing each instruction；It calculates
Machine readable storage medium storing program for executing is suitable for being loaded by processor and being executed the active distribution network for storing a plurality of instruction, described instruction
The partition method of distributions estimation.
Compared with prior art, the disclosure has the beneficial effect that
The present disclosure contemplates the influences that subregion estimates active distribution network distributions, are more in line with actual conditions；It gives
The area principle for having gone out to consider active distribution network distributions estimation calculated performance, it is equal to have comprehensively considered number of partitions, subregion
The problem of weighing apparatus property, ornamental and connectivity；Suitable for the partition method of distributions estimation, there is specific aim and validity.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown
Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.
The active distribution network partition method flow chart that Fig. 1 disclosure provides；
The 15 node power distribution net subregion processes that Fig. 2 disclosure provides；
The 15 node power distribution net area-decoupled processes that Fig. 3 disclosure provides；
The distributions that Fig. 4 disclosure provides estimate flow chart；
The IEEE123 node power distribution net division result that Fig. 5 disclosure provides；
Specific embodiment:
The disclosure is described further with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another
It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As shown in Figure 1, being suitable for the partition method of active distribution network distributions estimation, comprising the following steps:
(1) subregion number is determined according to given area principle first；
(2) layering of each branch of power distribution network is realized using branch line top and bottom process；
(3) node serial number is realized according to power distribution network topological structure and layering result；
(4) postorder traversal is carried out to power distribution network using the Depth Priority Algorithm of tree；
(5) it realizes to configure power distribution network subregion of the PMU node as overlapping nodes；
(6) realize power distribution network subregion after subregion decoupling.
In abovementioned steps (1), area principle includes three aspects:
1) reasonable subregion number
With the increase of subregion number, subregion interstitial content is reduced, and subregion carries out the calculating of local state estimation
Used time has shortening；But at the same time, number of regions increases the burden that can aggravate distributed communication, can estimate to distributions
The Global Attractor of meter adversely affects, to influence the overall calculation efficiency and precision of distributions estimation.Therefore, it needs
Provide a reasonable number of partitions.Theoretical number of partitions NPRule of thumb formulaIt provides, wherein n is power distribution network node
Sum.
2) connectivity and ornamental of subregion
The connectivity of sub-district domain node and ornamental are that all subregion can independently and completely realize local shape after subregion
The prerequisite of state estimation.The identification of power distribution network network structure may be implemented in Topology Analysis of Power Distribution Network method, can be used for differentiating section
Whether interconnected between point, can guarantee the connectivity of all subregion node using Topology Discovery Algorithm.Real-time measurement in power distribution network
Limited amount, the simple ornamental and redundancy that not can guarantee system by real-time measurement, generally progress distribution network status estimation
When can add node injecting power and measured and zero injecting power is as virtual measurement as pseudo-, to guarantee that system progress state is estimated
The ornamental and redundancy of timing.Distribution system ornamental can be differentiated using the method for numerical analysis or network topology.
Numerical analysis method be by differentiate Jacobin matrix whether full rank, think that the system is that algebra is considerable if full rank；Net
Network topological method is to generate to measure tree by topology search, if all nodes of the whole network can be covered by measuring tree, then it is assumed that should
System is that topology is considerable.Selection utilization numerical method judges electric power distribution network region ornamental in the disclosure.Except this
Except, it should make to measure redundancy equilibrium as far as possible on the basis of guaranteeing that subregion meets ornamental.
3) subregion is harmonious
Distributions estimation uses the framework of parallel computation, when in order to guarantee that each sub-regions carry out local state estimation
The equilibrium of used time and computational accuracy is calculated, subregion interstitial content and measurement redundancy there should be higher harmony.Each sub-district
Domain is independent and carries out local state estimation simultaneously, and it is also different that the calculation scale difference of different subregions then calculates the used time；Each round
Local state estimation used in the time depend on time longest subregion, distributions estimation the overall calculation time include
Local state estimation used time and subregion information interaction used time, local state estimation duration can be distributions estimation meter
It calculates efficiency and brings larger negative effect；In order to improve the computational efficiency of distributions estimation, each sub-regions locality state is estimated
The calculation scale of meter should be close as far as possible, that is, guarantees the harmony of subregion interstitial content.Each sub-regions carry out local state and estimate
The computational accuracy of meter measures that redundancy is closely related with it, and there is more balanced measurement redundancy to be conducive to whole estimate between subregion
Meter quickly meets convergence precision requirement, therefore should guarantee that subregion measures the harmony of redundancy as far as possible.
The topology of power distribution network is radial pattern topology, should be in the premise for the connectivity for guaranteeing each sub-regions node when subregion
Under, guarantee all subregion interstitial content is balanced with measurement redundancy as far as possible.In the disclosure, according to theoretical number of partitions NP,
Provide the range constraint n of subregion number of nodessr,min≤nsr≤nsr,max, wherein nsr,minAnd nsr,maxAccording to system node sum n
It is given with the ratio of the number of partitions.
In abovementioned steps (2), each node is equipped with particular number in power distribution network, numbers for characterizing the detailed of the node
Whether information including its locating specific location in distribution network and is equipped with PMU measurement.It is layered first according to branch line
The far and near topological hierarchy of realizing power distribution network of the method according to branch line apart from root node.Main feeder is first layer, is drawn from main feeder
Branch line level out is 2, and the level for the branch line drawn from second layer branch line is 3, and so on until all feeder lines point
Layer finishes.
In abovementioned steps (3), each node provides number (a according to its position1,a2,a3,a4), respectively represent system
Node original number, the level number of branch line where the node, the node serial number where the node on branch line, the node
Whether PMU is installed and measures number, a4=0, which represents the node, does not install PMU, a4=1, which represents the node installation, PMU.
In abovementioned steps (4), using the postorder traversal method in the Depth Priority Algorithm of tree to numbered distribution
Net carries out region division, realizes to configure the node of PMU as the power distribution network subregion of overlapping nodes.Postorder time is used in the disclosure
It goes through sequence and traversal search is carried out to power distribution network, it is therefore an objective to guarantee the connectivity of sub-district domain node after subregion.Traversal search it is initial
Starting point selection is divided into two kinds of situations: 1) smaller for scale, the less distribution system of branch line, the endpoint node of main feeder is first
Beginning search starting point；2) big for scale, the distribution system of branch line substantial amounts, initial ranging starting point selects highest point of level
Branch line endpoint node.From initial ranging node according to postorder traversal sequential search, until pause is searched when the node of installation PMU
Rope simultaneously judges whether the above-mentioned node searched for can form a sub-regions, that is, judges that whether search node number is given
N in rangesr,min≤nsr≤nsr,max；If being less than nsr,min, continue to search for forward, otherwise above-mentioned node is formedIt is a
Subregion,Indicate rounding operation.
In abovementioned steps (5), after power distribution network realizes subregion, it is also necessary to which decoupling just can be carried out distribution between each sub-regions
The calculating of state estimation.Subregion decoupling is carried out to power distribution network at the overlapping nodes of configuration PMU, which is also referred to as boundary
Node；Corresponding branch power is converted into the virtual injecting power of boundary node after decoupling.
Fig. 2 is the distribution network of 15 nodes, first the progress stage 1: can be divided into 3 according to branch line top and bottom process
Layer.After completing layering, each node provides number (a according to its position1,a2,a3,a4).As shown in Fig. 2, node serial number is
(13,2,1,0), representing primal system node serial number is 13, first node on the 2nd layer of branch line, on the node not
PMU is installed.Then the stage 2 is carried out: assuming that the power distribution network is divided into three sub-regions, then each subregion interstitial content
Range is；Select main feeder endpoint node (7,1,7,0) be used as initial ranging node, searching route be (7,1,7,0)-(6,1,
6,1) the above-mentioned number of search node totally 2 is judged at this time, is unsatisfactory for interstitial content constraint, continuation is searched for forward, (14,2,2,
0)-(15,3,1,0)-(13,2,1,0)-(5,1,5,1) judge the above-mentioned number of search node totally 6, in given range at this time
It is interior, therefore above-mentioned node forms a sub-regions；Then, continued as starting point according to same rule with node (5,1,5,1)
It searches for and realizes subregion.As shown in Fig. 2, the power distribution network is divided with node (4, Isosorbide-5-Nitrae, 1), (5,1,5,1) as overlapping nodes
For three sub-regions.
Fig. 3 provides Uncoupled procedure, carries out subregion decoupling to power distribution network at the overlapping nodes of configuration PMU, corresponding to prop up
Road power is converted into the virtual injecting power of decoupling back boundary node.S in figure3-4、S4-5、S4-10Respectively represent branch 3-4,4-5,
The complex power of 4-10；S4Represent the injection complex power of node 4.It should be noted that the arrow in Fig. 3 does not represent actual power
Flow direction.
As shown in figure 4, active distribution network distributions estimation the following steps are included:
(1) active distribution network subregion decouples；
(2) all subregion uses parallel computation framework, carries out local state estimation using weighted least-squares method；
(3) carry out information exchange between adjacent subarea domain, for differentiate distributions estimation whether global convergence, if
Through restraining, then step (5) are carried out, otherwise carries out step (4)；
(4) measurement that the data after interaction increase newly as adjacent subarea domain, goes to step (2)；
(5) estimated result is recorded.
In abovementioned steps (1), active distribution network subregion decoupling method uses the method that provides of the disclosure.It is provided in Fig. 4
The purpose of active distribution network distributed state estimation method is the validity verified the disclosure and propose partition method.
Fig. 5 show the disclosure by IEEE123 node division be 4 sub-regions, corresponding all subregion number of nodes and amount
It is as shown in table 1 to survey redundancy.According to table 1 as can be seen that interstitial content and measurement redundancy have higher harmony, the disclosure
In the case where given power distribution network and its PMU configure, as balanced as possible is divided into reasonable subregion for the power distribution network.
Table 1
Table 2 is power distribution network distributions estimated result, by its computational accuracy and calculates time and centralized state estimation
It is compareed.Wherein, RMSE is state estimation root-mean-square error, and for characterizing the precision of state estimation, calculation formula can be with
It is expressed asIn formula, xrealFor the true value of quantity of state, the disclosure uses calculation of tidal current mould
Quasi- true value,For the estimated value of quantity of state, nxTo participate in calculating the number of quantity of state.The formula is quantity of state absolute error
Root-mean-square error, for characterizing precision of state estimation size.Go out the uncertainty of force data, this public affairs for simulation metric data and DG
Middle example is opened using Monte-carlo Simulation Method, number realization is 1000 times, and therefore, the RMSE provided in 2 result of table is equal
The desired value of square error.Since voltage magnitude is different from phase angular unit and absolute size difference is larger, in table 2 respectively
Calculate voltage magnitude, phase angle RMSE.In table 2, α is used to characterize calculating of the distributions estimation relative to centralized state estimation
Efficiency improves situation, and its calculation formula is α=(Tc-Td)/Tc× 100%.In formula, TcFor centralized state estimation used time, TdFor
Distributions estimate the used time.The meaning of the formula is the distributions estimation meter on the basis of the centralized state estimation used time
The increase rate of efficiency is calculated, it is more significant to illustrate that distributions estimation computational efficiency improves closer to 1 by α ∈ (0,1), α.
Table 2
The disclosure can estimate provide reasonable subregion for active distribution network distributions, and subregion is to configure the section of PMU
Point is used as overlapping nodes, improves PMU and measures the utilization rate in state estimation, is conducive to distributions estimation calculated performance
Promotion.
To sum up, first according to DSE algorithm the characteristics of, provide subregion criterion, including interstitial content it is harmonious, measure redundancy
Subregion ornamental, connectivity after harmonious and subregion etc.；Then the branch line top and bottom process in topology analyzing method is utilized
The layering number for realizing each node, recycles the Depth Priority Algorithm of tree to traverse all nodes, according to the subregion proposed
Criterion realizes ADN subregion and decoupling as overlapping nodes using the node for configuring PMU, the distributions for active distribution network
Estimation.
According to distributions estimate parallel computation the characteristics of, analyze subregion to distributions estimate computational accuracy and
The influence of efficiency.With the increase of subregion number, subregion interstitial content is reduced, and subregion carries out the meter of local state estimation
The calculation used time has shortening；But at the same time, number of regions increases the burden that can aggravate distributed communication, can to distributions
The Global Attractor of estimation adversely affects, to influence the overall computational performance of distributions estimation.In addition, subregion
Connectivity, harmony all have larger impact to distributions estimation calculated performance.Area principle include reasonable subregion number,
Sub-district domain connectivity and ornamental, subregion interstitial content harmony and measurement redundancy are harmonious.Using branch line top and bottom process
Realize that power distribution network is layered and node is numbered；According to node serial number situation, Depth Priority Algorithm using tree is to matching
Power grid carries out postorder traversal, realizes according to area principle to configure power distribution network subregion of the PMU node as overlapping nodes；It is configuring
Subregion decoupling is carried out to power distribution network at the overlapping nodes of PMU, is estimated for distributions.The disclosure analysis subregion to point
On the basis of cloth state estimation influences, area principle is provided, proposes the partition method for being suitable for distributions estimation, favorably
In the promotion of distributions estimation calculated performance.
It should be understood by those skilled in the art that, embodiment of the disclosure can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the disclosure
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the disclosure, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The disclosure is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present disclosure
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field
For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair
Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.
Although above-mentioned be described in conjunction with specific embodiment of the attached drawing to the disclosure, model not is protected to the disclosure
The limitation enclosed, those skilled in the art should understand that, on the basis of the technical solution of the disclosure, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within the protection scope of the disclosure.
Claims (10)
1. a kind of partition method of active distribution network distributions estimation, it is characterized in that: the following steps are included:
The topological structure for analyzing active distribution network is layered using branch line top and bottom process realization branch and realizes node serial number；
Postorder traversal is carried out to the power distribution network for completing number using the Depth Priority Algorithm of tree, according to area principle to configure
The node of synchronized phasor measurement unit realizes power distribution network subregion as overlapping nodes；
Subregion decoupling is carried out to power distribution network at overlapping nodes, corresponding branch power metric data is converted into virtual injection function
Rate metric data carries out distributions estimation to the power distribution network after decoupling.
2. the partition method of a kind of active distribution network distributions estimation as described in claim 1, it is characterized in that: using dividing
Branch line top and bottom process selectes a main feeder in power distribution network, which is 1；Its number of plies of the branch being connected with main feeder
It is 2；And so on realize the layerings of all branches.
3. the partition method of a kind of active distribution network distributions estimation as described in claim 1, it is characterized in that: the branch
Road layering realizes that node serial number has at least four elements, respectively represents the node original number of system, branch where the node
Whether the level number of line, the node serial number where the node on branch line, the node install the table of synchronized phasor measurement unit
Show number.
4. the partition method of a kind of active distribution network distributions estimation as described in claim 1, it is characterized in that: described point
The characteristics of area's principle estimates parallel computation according to distributions and subregion influence distributions estimation calculated performance
It arrives.
5. the partition method of a kind of active distribution network distributions estimation as described in claim 1, it is characterized in that: described point
Area's principle specifically includes reasonable subregion number, sub-district domain connectivity and ornamental and subregion interstitial content harmony and amount
It is harmonious to survey redundancy.
6. the partition method of a kind of active distribution network distributions estimation as described in claim 1, it is characterized in that: described time
The process for going through search includes:
(1) selection search start node；
(2) from initial ranging node according to postorder traversal sequential search, until when the node of installation synchronized phasor measurement unit,
Pause search for simultaneously judge whether the above-mentioned node searched for can form a sub-regions, that is, judge search node number whether
In given range, if interstitial content is less than setting value, continue to search for forward, otherwise above-mentioned node forms multiple subregions；
(3) node for configuring synchronized phasor measurement unit retains, again selection search start node；
(4) step (1) to (3) are repeated, until all node traverses are completed.
7. the partition method of a kind of active distribution network distributions estimation as described in claim 1, it is characterized in that: configuring
Subregion decoupling is carried out to power distribution network at the overlapping nodes of synchronized phasor measurement unit, which is also referred to as boundary node, uses
Information exchange in distributions estimation；Corresponding branch power is converted into the virtual injection function of boundary node after decoupling
Rate.
8. the partition method of a kind of active distribution network distributions estimation as described in claim 1, it is characterized in that: using simultaneously
Row calculation method carries out the estimation of power distribution network distributions.
9. a kind of computer readable storage medium, it is characterized in that: being wherein stored with a plurality of instruction, described instruction is suitable for being set by terminal
Standby processor load and perform claim requires the square partition of active distribution network distributions estimation described in any one of 1-8
Method.
10. a kind of terminal device, it is characterized in that: including processor and computer readable storage medium, processor is for realizing each
Instruction；Computer readable storage medium is for storing a plurality of instruction, and described instruction is suitable for by processor load and perform claim is wanted
The partition method for asking active distribution network distributions described in any one of 1-8 to estimate.
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| CN201910344994.1A CN110059094A (en) | 2019-04-26 | 2019-04-26 | Partition method, medium and the equipment of active distribution network distributions estimation |
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| CN201910344994.1A CN110059094A (en) | 2019-04-26 | 2019-04-26 | Partition method, medium and the equipment of active distribution network distributions estimation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112765828A (en) * | 2021-01-28 | 2021-05-07 | 中国人民解放军海军工程大学 | Real-time simulation network subdivision method for complex power system |
| CN112803408A (en) * | 2021-03-18 | 2021-05-14 | 山东大学 | Power distribution system and load side collaborative state estimation method and system |
| CN116365555A (en) * | 2023-05-10 | 2023-06-30 | 国网江苏省电力有限公司苏州供电分公司 | Power grid state estimation method and system considering local three-phase asymmetry |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2566001A1 (en) * | 2011-08-29 | 2013-03-06 | General Electric Company | Power distribution network fault management |
| CN105354656A (en) * | 2015-10-09 | 2016-02-24 | 珠海许继芝电网自动化有限公司 | Partition decoupling based distributed parallel computing method and system for distribution network state estimation |
| CN106897942A (en) * | 2017-01-24 | 2017-06-27 | 中国电力科学研究院 | A kind of power distribution network distributed parallel method for estimating state and device |
-
2019
- 2019-04-26 CN CN201910344994.1A patent/CN110059094A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2566001A1 (en) * | 2011-08-29 | 2013-03-06 | General Electric Company | Power distribution network fault management |
| CN105354656A (en) * | 2015-10-09 | 2016-02-24 | 珠海许继芝电网自动化有限公司 | Partition decoupling based distributed parallel computing method and system for distribution network state estimation |
| CN106897942A (en) * | 2017-01-24 | 2017-06-27 | 中国电力科学研究院 | A kind of power distribution network distributed parallel method for estimating state and device |
Non-Patent Citations (1)
| Title |
|---|
| PEIRAN YUAN: "A Network Partition Approach for Distributed Three-phase State Estimation of Active Distribution Networks", 《2018 IEEE POWER & ENERGY SOCIETY GENERAL MEETING(PESGM)》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112765828A (en) * | 2021-01-28 | 2021-05-07 | 中国人民解放军海军工程大学 | Real-time simulation network subdivision method for complex power system |
| CN112803408A (en) * | 2021-03-18 | 2021-05-14 | 山东大学 | Power distribution system and load side collaborative state estimation method and system |
| CN112803408B (en) * | 2021-03-18 | 2023-02-28 | 山东大学 | Power distribution system and load side collaborative state estimation method and system |
| CN116365555A (en) * | 2023-05-10 | 2023-06-30 | 国网江苏省电力有限公司苏州供电分公司 | Power grid state estimation method and system considering local three-phase asymmetry |
| CN116365555B (en) * | 2023-05-10 | 2023-08-11 | 国网江苏省电力有限公司苏州供电分公司 | Power grid state estimation method and system considering local three-phase asymmetry |
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