CN107370148A - The source net cooperative optimization method of meter and node split - Google Patents
The source net cooperative optimization method of meter and node split Download PDFInfo
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- CN107370148A CN107370148A CN201710654218.2A CN201710654218A CN107370148A CN 107370148 A CN107370148 A CN 107370148A CN 201710654218 A CN201710654218 A CN 201710654218A CN 107370148 A CN107370148 A CN 107370148A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The source net cooperative optimization method of present invention meter and node split refers to the source net cooperative optimization method in a kind of economic load dispatching, particularly a kind of method brought dot splitting into Optimized Operation decision-making.The source net collaboration Optimized model of meter and dot splitting is established, and the solution of model, method for solving are carried out using heuristic solving strategy method：Data prepare；Determine the adjustable set of node, membership；Node, set of fingers are determined according to power network is connective, actual motion is regular；Calculating is optimized according to the source of meter and dot splitting net collaboration Optimized model；For model optimization result, calculating instrument is analyzed using calculation of short-circuit current, topological analysis, judges whether to violate node short circuit current, connectivity constraint；If optimum results do not violate operation constraint, result of calculation is exported；If violating, it will cause to violate the branch road for running constraint or node deleted from optional set, return to optimization calculation procedure and re-start calculating.
Description
Technical field
The source net cooperative optimization method of present invention meter and node split refers to the source net collaboration in a kind of economic load dispatching
Optimization method, particularly a kind of method brought dot splitting into Optimized Operation decision-making.
Background technology
Theoretical conventional electric power system call is typically according to planning, maintenance decision result, to source under fixed electric network composition
Middle decision content optimizes.With extensive renewable energy source power, and the active load such as electric automobile, energy storage melts
Enter, electric power system source active balance pattern is presented developing state complicated and changeable, and the economic load dispatching under fixed electric network composition is by day
Become to being difficult in adapt to this situation.
In recent years, change electric network composition by adjusting branch road running status in the operation phase, carry out source and cooperateing with for net is excellent
It is melted into as new study hotspot.Point out on the basis of DC power flow, established with the minimum target of cost of electricity-generating in some articles,
Generating set power output, branch road running status cooperate with Optimization Decision Models for the source net of decision content.On this basis, both at home and abroad
Scholar again in succession introduce in a model power network N-1, power network connectedness, node voltage scope, node capacity of short circuit limit etc. its
Its indispensable operation constraint, and the heuristic solving strategy algorithm of problems is given, progressively push this Research Thinking to reality.Phase
Pass scholar defines three kinds of states between the net of source in economic load dispatching, and will change electric network composition as elimination or suppress economic load dispatching
The means of middle source net conflict.The bi-level optimization model of source net conflict measurement is established, electric network composition knots modification can minimized
While, take into account the realization of source optimal operation mode.
It can be seen that the source net collaboration optimization problem being centered around in economic load dispatching, domestic and foreign scholars have carried out heat from multiple angles
Strong research, and achieve abundant achievement in research.However, research only accounts for the adjustment on side in electric network composition at present, will prop up
Road running status is represented by 0-1 amounts, is incorporated into Optimized model.In fact, by switching manipulation in transformer station, power network is carried out
Dot splitting in structure, the change of same achievable electric network composition.The adjustment on side is compared, the mode of dot splitting can reduce circuit throwing
Switching overvoltage risk caused by cutting, power grid security, reliability service are influenceed smaller.Existing article proposes the side by dot splitting
Formula changes electric network composition, out-of-limit with busbar voltage after elimination accident or Line Flow, but only as urgent after accident
Control device, it is general to use the heuristic search method based on sensitivity, not yet dot splitting is brought into Optimized Operation decision-making.
Transmission of the electric energy in power network is and electric, it is necessary to meet the restriction of the electric rule such as Kirchoff s voltage, current law
The change of web frame can influence the trend distribution in power network.Adjustment electric network composition is considered in economic load dispatching, net pair can be alleviated
The restriction of source optimal operation mode.Existing research only adjusts electric network composition by changing branch road running status, actually passes through change
Switching manipulation carries out dot splitting, the adjustment of same achievable electric network composition in power station, and promotes the realization of source optimal operation mode.
However, the adjustment of branch road running status typically can be represented directly in economic load dispatching model by way of introducing 0-1 amounts, and point
Fission process is then increasingly complex, and the model that existing research institute establishes can not be directly applicable.
The content of the invention
The purpose of the present invention is the deficiency for the studies above basis, there is provided a kind of source net collaboration of meter and node split is excellent
Change method, the mode for introducing virtual injection and virtual tributary builds augmentation electric network composition, and gives corresponding points in economic load dispatching
The constraint expression of fission process, the source net collaboration Optimized model of meter and dot splitting is established, power network knot is changed by dot splitting
The difference of structure, adjustment electric network composition is considered in economic load dispatching, alleviate restriction of the net to source optimal operation mode.
The present invention takes following technical scheme to realize：
Under augmentation electric network composition, the source net collaboration Optimized model of meter and dot splitting is expressed as form, with cost of electricity-generating most
Small is target, and model objective function is expressed as,
（13）
In formula, N is operating unit quantity；For unitCost of electricity-generating coefficient, is represented in linear form；For unitIt is defeated
Go out power.
Constraints mainly includes：
（1）Node power Constraints of Equilibrium
（14）
In formula,For node m load active power；For the set of fingers using node m as end-node；
Set of fingers using node m as first node；For the generating set set being connected with node m.
（2）Virtual injection-constraint
For the virtual injection rate to generate electricity, load introduces, formula should be met（1）~formula（5）Shown constraint；
（1）
（2）
In above formula,For virtual injectionWhether effective 0-1 indicates, M is the constant more than 100,000；WhenWhen=1,
By formula（1）Understand=, represent virtual injectionEffectively, it is equal to actual unit injecting power；When=0
When, by formula（2）Have=0；
（3）
（4）
In formula,For virtual injectionWhether effective 0-1 indicates；
（5）
（3）Unit output power range constrains
（15）
In formula,、Respectively unitPower output maximum, minimum value.
（4）Branch power constrains
The ordinary branch of switching manipulation in transformer station is not available for for first and last node, branch power should meet formula（6）~formula
（8）Shown constraint；For the virtual tributary of introducing, branch power should meet formula（9）~formula（12）Shown constraint；
（6）
（7）
（8）
In formula, it is assumed that branch road e first and last end nodes are respectively m, n, and branch power isIf headend node m can carry out dot splitting,
Except increase dummy node in augmentation electric network compositionOutside, it is further introduced into virtual tributary,、Respectively node m,
Node n voltage phase angles；For branch road e reactance values；For branch road running status,Represent to stop transport for 0,Fortune is represented for 1
OK；
Virtual tributary powerIt should meet to constrain as follows,
（9）
（10）
（11）
In formula,For dummy nodeVoltage phase angle；For virtual tributaryRunning status,Represent to stop transport for 0,
Operation is represented for 1；Due to branch road e and virtual tributaryCan only at most there is an operation, addition is as follows in Optimized model for this
Constraint,
（12）
When、When being 0, represent that branch road e stops transport in former electric network composition.
The source of meter and dot splitting net collaboration Optimized model is MILP model, to avoid dot splitting process from disobeying
The limitation of antinodal points short-circuit current capability, power network connectedness etc. are constrained, and the solution of model is carried out using heuristic solving strategy method.
The heuristic solving strategy method, comprises the following steps：
1）Data prepare；
2）Determine the adjustable set of node, membership；According to power network is connective, actual motion is regular determine that node point can be carried out
Split and the node of running status adjustment, set of fingers；
3）Calculating is optimized according to the source of meter and dot splitting net collaboration Optimized model；
4）For the source of meter and dot splitting net collaboration Optimized model optimum results, using calculation of short-circuit current, topological analysis decile
Calculating instrument is analysed, judges whether to violate the constraint such as node short circuit current, connectedness；
5）If optimum results do not violate operation constraint, result of calculation is exported；If violating, will cause to violate the branch for running constraint
Road or node are deleted from optional set, return to step 3）Re-start calculating.
Advantage of the present invention：Means of the present invention using dot splitting as adjustment electric network composition, and given using augmentation electric network composition
Go out the constraint expression of dot splitting process, establish the source net collaboration Optimized model of meter and dot splitting, by increasing dummy node, draw
The mode for entering virtual injection and virtual tributary builds augmentation electric network composition, can represent node caused by switching manipulation point in transformer station
Split, and the switching of generating, load, branch road between different split vertexes.Meanwhile augmentation electric network composition applies also for representing node
Fusion process, the increasingly complex main wiring modes such as double-bus segmentation, half breaker are also applied for, finally make existing research
The source net collaboration Optimized model established is immediately possible.The present invention can expand the space of traditional economy scheduling solution, adapt to complicated
Changeable source active balance pattern, source operational efficiency is improved, while can reduce and change power network knot by adjusting branch road running status
Structure, to the adverse effect of electric power netting safe running.
Brief description of the drawings
Below with reference to accompanying drawing, the invention will be further described：
Fig. 1 is that 3 node power systems form schematic diagram；
Fig. 2 is traditional economy scheduling model result schematic diagram；
Fig. 3 is existing economic load dispatching model decision result schematic diagram；
Fig. 4 is that main electrical scheme is the structural representation of double bus scheme mode in station corresponding to 3 node system interior joints 1 in Fig. 1；
Fig. 5 is through the scheduling result schematic diagram that helps after the node 1 in Fig. 4 divides；
Fig. 6 is electric network swim distribution map after Fig. 4 node 1 divides；
Fig. 7 is the generating representation schematic diagram of former electric network composition；
Fig. 8 is the generating representation schematic diagram of augmentation electric network composition；
Fig. 9 is that the branch road of former electric network composition represents schematic diagram；
Figure 10 is the branch road representation schematic diagram of augmentation electric network composition；
Figure 11 is that the branch road of the former electric network composition after 3 virtual tributaries of introducing in Fig. 7 represents schematic diagram；
Figure 12 is that the branch road of the augmentation electric network composition after 3 virtual tributaries of introducing in Fig. 8 represents schematic diagram；
Figure 13 is 5 node system schematic diagrames；
Figure 14 is augmentation electric network composition schematic diagram corresponding to 5 node systems；
Figure 15 is module scheduling result schematic diagram of the present invention.
Embodiment
Make further checking and explanation to the present invention below in conjunction with specific embodiments.
Transmission of the electric energy in power network is and electric, it is necessary to meet the restriction of the electric rule such as Kirchoff s voltage, current law
The change of web frame can influence the trend distribution in power network.Adjustment electric network composition is considered in economic load dispatching, net pair can be alleviated
The restriction of source optimal operation mode.With simple 3 node power system（See Fig. 1）Exemplified by, between electric network composition and economic load dispatching
Association mechanism illustrates.Each branch road reactance of 3 node systems and capacity, load data are as shown in figure 1, alternator data is shown in Table 1.
The node system generating set data of table 13
According to electric network composition shown in Fig. 1, using the economic load dispatching under the fixed electric network composition of tradition, scheduling result is as shown in Fig. 2 total
Cost of electricity-generating is 3052.5 USD/h.Wherein, branch road 1-2 effective power flows are equal to its transmission capacity, cause to be in the same circuit
The branch road 1-3 ability to transmit electricities that still have high redundancy can not be played, economic unit B can not undertake more loads so that total
Cost of electricity-generating improves.
If considering the change of electric network composition in economic load dispatching, using branch road running status and unit power output simultaneously as
Decision content is brought into economic load dispatching model, and scheduling result is as shown in Figure 3.Now, total power production cost 2990USD/h, relatively pass
Economic load dispatching model under the fixed electric network composition of system reduces by 62.5 USD/h.From the figure 3, it may be seen that existing model for reduce generate electricity into
This needs branch road 2-3 to stop transport, and the adjustment of electric network composition can avoid KVL from constraining the restriction to branch road 1-3 ability to transmit electricities.
Existing research only adjusts electric network composition by changing branch road running status, actual to pass through switching manipulation in transformer station
Dot splitting, the adjustment of same achievable electric network composition are carried out, and promotes the realization of source optimal operation mode.Assuming that 3 node systems
Main electrical scheme is double bus scheme mode in station corresponding to interior joint 1, specific as shown in Figure 4.Between original state Down Highway W1, W2
Bus QF is in closure state, now main electrical scheme can equivalence be 1 node.If circuit breaker Q F is opened, other open circuits
Device running status is constant, and now node 1 will split into 2 nodes：Generator A, load, branch road 1-2 are connected to bus W1, generate electricity
Machine B, branch road 1-3 are connected to bus W2.Implement traditional economy scheduling on this basis, scheduling result as shown in figure 5, it is total generate electricity into
This be 2915USD/h, economic load dispatching model 137.5 USD/h of reduction under more traditional fixed electric network composition, more existing model
Reduce 75USD/h.
Switching manipulation only accounts for the adjustment of bus running status in above-mentioned transformer station, additionally can further lead to
The switching manipulation for crossing other breakers is generated electricity, the switching of load, branch road between different buses.For example, according to Fig. 4
The main wiring mode of node 1, the load of node 1 can be transferred to bus W2 by bus W1 through switching manipulation, now economic load dispatching result
As shown in Figure 6.Now, total power production cost 2886USD/h, the economic load dispatching model under more traditional fixed electric network composition reduce
166.5 USD/h, more existing model reduce 104USD/h.
It can be seen that further changing electric network composition by way of dot splitting, compare existing research and only transported by adjusting branch road
The mode of row state change electric network composition, the space of economic load dispatching solution can be expanded, adapt to source active balance mould complicated and changeable
Formula, source operational efficiency is improved, while switching overvoltage risk caused by circuit switching can be reduced, to the unfavorable of electric power netting safe running
Influence smaller.However, the adjustment of branch road running status typically can be directly by way of introducing 0-1 amounts in economic load dispatching model
Represent, and dot splitting process is then increasingly complex, the model that existing research institute establishes can not be directly applicable.
To represent dot splitting process, the present invention proposes the concept of augmentation electric network composition.Augmentation electric network composition refers in original
On the basis of electric network composition, acted by increasing dummy node with simulating bus, and introduce virtual injection and virtual branch
Road, generated electricity with simulation, load, and transfer of the branch road between different buses.
Substation Bus Arrangement mode is mainly double-bus, double-bus segmentation, half breaker etc. in power transmission network.It is first herein
Exemplified by elder generation is in a manner of double-bus, to generating electricity, the method for expressing of load and branch road under augmentation electric network composition illustrates.
（1）Generated electricity under augmentation electric network composition, load method for expressing
Generating method for expressing is illustrated first.Assuming that the generating injecting power being connected with node m is.In augmentation power network
Increase dummy node corresponding to node m under structure, to represent the split vertexes formed after bus action, draw simultaneously
Enter virtual injection、, represent respectively node m,On power injection.Specifically as shown in Figure 7 and Figure 8.
Corresponding above-mentioned augmentation electric network composition, virtually injects in economic load dispatching modelIt should meet to constrain as follows,
（1）
（2）
In above formula,For virtual injectionWhether effective 0-1 indicates that M is larger constant.WhenWhen=1, by formula（1）
Understand=, represent virtual injectionEffectively, it is equal to actual unit injecting power；WhenWhen=0, by formula
（2）Have=0。
It is similar, virtual injectionIt should meet,
（3）
（4）
In formula,For virtual injectionWhether effective 0-1 indicates.
From the physical significance virtually injected, one and only one is empty for two virtual injection rates in augmentation electric network composition
It is effective to intend injection, should also introduce following constraint in scheduling model for this,
（5）
The method for expressing of load power is similar therewith, the introduction-type in scheduling model（1）- formula（5）Shown constraint.
（2）Branch road representation under augmentation electric network composition
Assuming that branch road e first and last end nodes are respectively m, n, branch power is.If headend node m can carry out dot splitting, augmentation electricity
Except increase dummy node in web frameOutside, it is further introduced into virtual tributary, specifically as shown in Figure 9 and Figure 10.
Corresponding above-mentioned augmentation electric network composition, in economic load dispatching modelIt should meet to constrain as follows,
（6）
（7）
（8）
In formula,、Respectively node m, node n voltage phase angles；For branch road e reactance values；For branch road running status,
0 represents to stop transport, and 1 represents operation.
It is similar, virtual tributary powerIt should meet to constrain as follows,
（9）
（10）
（11）
In formula,For dummy nodeVoltage phase angle；For virtual tributaryRunning status, 0 represents to stop transport, and 1 represents fortune
OK.
Obviously, branch road e and virtual tributaryCan only at most there is an operation, need to add as follows about in Optimized model for this
Beam,
（12）
When、When being 0, represent that branch road e stops transport in former electric network composition.Therefore, this paper models can be automatically comprising existing
Only consider the research of branch road running status adjustment.
If the end nodes of branch road e two can carry out switching manipulation in transformer station, 3 virtual tributaries should be introduced, such as Figure 11 and
Shown in Figure 12.
Constraint and formula corresponding to virtual tributary（9）~formula（12）It is similar.
For the present invention by increasing dummy node, the mode for introducing virtual injection and virtual tributary builds augmentation electric network composition,
Node split caused by switching manipulation in transformer station, and generating, load, branch road cutting between different split vertexes can be represented
Change.Meanwhile augmentation electric network composition applies also for representing node fusion process, double-bus segmentation, a half breaker are also applied for
Etc. increasingly complex main wiring mode, the source net collaboration Optimized model for finally establishing existing research institute is immediately possible.
To verify this paper model validations, illustrated by taking 5 node systems as an example.5 node system loads and branch road reactance
Data are as shown in figure 13, and machine unit characteristic is shown in Table 2.The branch road 1-4 transmission capacity upper limit is 200 MW, the transmission capacity of other branch roads
The upper limit is 120 MW.
The unit parameter of table 2
Under fixed electric network composition, implement conventional security economic load dispatching, each unit power output is as shown in table 3, each branch power
As shown in table 4.
The generating set power output of table 3
The Branch Power Flow of table 4
Total power production cost is.As shown in Table 3, branch road 3-4 trends are just equal to its transmission capacity limit value,
And branch road 1-4 load factors are relatively low, still there is larger transmission capacity not played.This is due to be constrained to restrict by KVL, branch road
3-4 trends are equal to its transmission capacity limit value, prevent in the same circuit trend on branch road 1-4 to continue to increase.
Change electric network composition by adjusting branch road running status, can further excavate electrical grid transmission ability, improve source fortune
Line efficiency.If only considering the adjustment of branch road running status, unit power output is as shown in table 5, and each branch power is as shown in table 6.
The generating set power output of table 5
The Branch Power Flow of table 6
Total power production cost is, comparing the economic load dispatching under fixed electric network composition has obvious reduction.Together
When, need branch road 1-3, branch road 2-5 to stop transport according to scheduling result, it is larger to the knots modification of former electric network composition, add power network fortune
Sector-style danger.
Assuming that 5 node system interior joints 1, node 4 are double bus scheme mode.Accordingly, augmentation electricity corresponding to 5 node systems
Web frame is as shown in figure 14, and under 5 node system augmentation electric network compositions, according to this paper models, the electric network composition of final decision is such as
Shown in Figure 15, each unit power output is identical with result shown in table 5, and total power production cost is。
As shown in figure 15, according to this paper models, node 1, node 4 are split into 2 nodes respectively, and generating is being divided with load
Redistributed between node afterwards, avoid restriction of the KVL constraints to source optimal operation mode.Meanwhile this paper models are determined
Plan result does not need branch road to stop transport, and is advantageous to power network safety operation.
To adapt to the increasingly sophisticated changeable generation load pattern of power system, the present invention is using dot splitting as adjustment power network knot
The means of structure, and the constraint expression of dot splitting process is provided using augmentation electric network composition, establish the source net association of meter and dot splitting
Same Optimized model.Research herein can expand the space of traditional economy scheduling solution, adapt to source active balance pattern complicated and changeable,
Raising source operational efficiency, while can reduce and change electric network composition by adjusting branch road running status, to electric power netting safe running not
Profit influences.
Claims (4)
- A kind of 1. source net cooperative optimization method of meter and node split, it is characterised in that under augmentation electric network composition, meter and point minute The source net collaboration Optimized model split is expressed as form, and with the minimum target of cost of electricity-generating, model objective function is expressed as,（13）In formula, N is operating unit quantity；For unitCost of electricity-generating coefficient, is represented in linear form；For unitIt is defeated Go out power.
- 2. the source net cooperative optimization method of meter according to claim 1 and node split, it is characterised in that the model mesh The constraints of scalar functions includes：（1）Node power Constraints of Equilibrium（14）In formula,For node m load active power；For the set of fingers using node m as end-node；With Node m is the set of fingers of first node；For the generating set set being connected with node m；（2）Virtual injection-constraintFor the virtual injection rate to generate electricity, load introduces, formula should be met（1）~formula（5）Shown constraint；（1）（2）In above formula,For virtual injectionWhether effective 0-1 indicates, M is the constant more than 100,000；WhenWhen=1, By formula（1）Understand=, represent virtual injectionEffectively, it is equal to actual unit injecting power；When=0 When, by formula（2）Have=0；（3）（4）In formula,For virtual injectionWhether effective 0-1 indicates；（5）（3）Unit output power range constrains（15）In formula,、Respectively unitPower output maximum, minimum value；（4）Branch power constrainsThe ordinary branch of switching manipulation in transformer station is not available for for first and last node, branch power should meet formula（6）~formula （8）Shown constraint；For the virtual tributary of introducing, branch power should meet formula（9）~formula（12）Shown constraint；（6）（7）（8）In formula, it is assumed that branch road e first and last end nodes are respectively m, n, and branch power isIf headend node m can carry out dot splitting, increase Except increase dummy node in broadcasting and TV web frameOutside, it is further introduced into virtual tributary,、Respectively node m, node N voltage phase angles；For branch road e reactance values；For branch road running status,Represent to stop transport for 0,Operation is represented for 1；Virtual tributary powerIt should meet to constrain as follows,（9）（10）（11）In formula,For dummy nodeVoltage phase angle；For virtual tributaryRunning status,Represent to stop transport for 0, Operation is represented for 1；Due to branch road e and virtual tributaryCan only at most there is an operation, addition is as follows in Optimized model for this Constraint,（12）When、When being 0, represent that branch road e stops transport in former electric network composition.
- 3. the source net cooperative optimization method of meter according to claim 1 and node split, it is characterised in that meter and dot splitting Source net collaboration Optimized model be MILP model, for avoid dot splitting process violation node short-circuit current capability Limitation, power network connectivity constraint, the solution of model is carried out using heuristic solving strategy method.
- 4. the source net cooperative optimization method of meter according to claim 3 and node split, it is characterised in that described heuristic Method for solving, comprise the following steps：1）Data prepare；2）Determine the adjustable set of node, membership；According to power network is connective, actual motion is regular determine that node point can be carried out Split and the node of running status adjustment, set of fingers；3）Calculating is optimized according to the source of meter and dot splitting net collaboration Optimized model；4）For the source of meter and dot splitting net collaboration Optimized model optimum results, analyzed using calculation of short-circuit current, topological analysis Calculating instrument, judge whether to violate node short circuit current, connectivity constraint；5）If optimum results do not violate operation constraint, result of calculation is exported；If violating, will cause to violate the branch for running constraint Road or node are deleted from optional set, return to step 3）Re-start calculating.
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| WO2016172348A1 (en) * | 2015-04-21 | 2016-10-27 | California Institute Of Technology | Distributed optimal power flow processes for unbalanced radial distribution networks |
| CN106849146A (en) * | 2017-02-05 | 2017-06-13 | 安徽康力节能电器科技有限公司 | A kind of five end HVDC transmission systems |
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| WO2016172348A1 (en) * | 2015-04-21 | 2016-10-27 | California Institute Of Technology | Distributed optimal power flow processes for unbalanced radial distribution networks |
| CN106849146A (en) * | 2017-02-05 | 2017-06-13 | 安徽康力节能电器科技有限公司 | A kind of five end HVDC transmission systems |
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