CN109873409A - A fault-recovery reconstruction method for distribution network - Google Patents
A fault-recovery reconstruction method for distribution network Download PDFInfo
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Abstract
本发明公开了一种配电网故障恢复性重构方法，包括以下步骤：A、读取电网故障信息，定位故障点；B、根据整数型环网编码策略对非故障区网络进行编码，获取非故障区网络编码；C、故障隔离，对非故障区恢复供电；D、对故障区的网络编码进行初始化的编码分别对所述整数编码型量子负荷值群中的每个负荷值的解进行有效性判断，以对解有效的负荷值进行优化更新；E、获取故障恢复性重构开关组合，恢复电网数据，该系统设计合理，可以快速的找到系统的故障所在，将故障进行隔离，并且可以快速的优化以及恢复电网系统。
The invention discloses a fault-recovery reconstruction method for a distribution network, comprising the following steps: A. reading power grid fault information, and locating the fault point; B. coding a non-fault area network according to an integer ring network coding strategy, and obtaining Network coding for non-faulty areas; C. Fault isolation, restoring power supply to non-faulty areas; D. Coding for initializing the network coding of faulty areas Perform the solution of each load value in the integer-encoded quantum load value group respectively. Validity judgment to optimize and update the effective load value of the solution; E. Obtain fault recovery reconfiguration switch combination and restore power grid data. The system design is reasonable, can quickly find the fault of the system, isolate the fault, and The grid system can be optimized and restored quickly.
Description
Technical field
The present invention relates to distribution network failure recovery technology field, specially a kind of restorative reconstructing method of distribution network failure.
Background technique
Power distribution network reconfiguration is to pass through interconnection switch and block switch in change system in the case where meeting power distribution network operation constraint
Opening and closing assembled state network topology structure is switched over, the transfer load between different feeder lines, to influence network trend
Distribution achievees the purpose that the network optimization is run.By emphasis difference, it is divided into static network optimal reconfiguration and fault recovery substantially
Reconstruct.Static optimization reconstruct by optimization network structure, reaches system active loss minimum, improves the mesh of power supply reliability
's.
And fault recovery reconstruct be after power distribution network breaks down and quickly isolates failure, in the case where meeting certain condition,
In order to reduce power failure area to the network structure regulation of customer power supply as far as possible, weight restores electricity after a failure, and emphasis is not
Together.Power distribution network is usually open loop operation, and looped network design structure has the characteristics that radial feeder line, and permanent fault occurs and is isolated
Afterwards, power distribution network is forced to be divided into service area and power loss area two parts, and fault recovery reconstruct is main to consider operation interconnection switch to mistake
Electric area's network carries out restorative power supply.
Distribution network restoration reconstruct is an integer type combinatorial optimization problem, and solve the problems, such as this at present mainly has method:
Mathematical programming approach, heuristic search method and intelligent algorithm.Mathematical programming approach has Global Optimality, but ties up in power distribution network
After number increases, often solve difficult.Heuristic search algorithm.After Complicated Distribution Network breaks down, the interrelated spy in region
Property will lead to heuristic rule and be difficult to be formed.Intelligent algorithm is good at solving hyperspace optimization problem, is widely used in
Network optimization problem.A large amount of invalid infeasible solutions can be generated using simple binary coded form, in searching process, reduced
Fault recovery efficiency.
Searching efficiency will be greatly improved by seeking better optimizing algorithm in the restorative reconstruct of distribution network failure, for improving
It is particularly important to reconstruct efficiency.Load value group algorithm has obtained widely answering as completely new Swarm Intelligence Algorithm, in many fields
With compared with traditional evolution algorithm such as genetic algorithm, load value group algorithm uses biocenose shared information strategy, convergence speed
The characteristics of degree is fast, and especially at the initial stage of evolution, adjustable parameter is few, simple and easy, easily reaches global optimum.Binary system load
Value group algorithm generates a large amount of infeasible solutions in reconstruct, causes to reconstruct low efficiency, and traditional load value group algorithm is after evolution
Phase easily falls into locally optimal solution or falls into dead state.The restorative reconstruction and optimization model of traditional distribution network failure is to switch behaviour
Make the minimum simple target of number, but often have ignored the smallest index of network active loss, not can guarantee and economically obtain
To optimal restorative reconfiguration scheme.
Summary of the invention
The purpose of the present invention is to provide a kind of restorative reconstructing methods of distribution network failure, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme: A, reading electric network fault information, fault point；
B, non-faulting area network is encoded according to integer type looped network coding strategy, obtains non-faulting area network code；
C, Fault Isolation restores electricity to non-faulting area；
D, the coding initialized to the network code of faulty section is respectively to the integer coding type quantum load value group
In the solution of each load value carry out Effective judgement, to optimize update to solving effective load value；
E, it obtains fault recovery and reconstructs switch combination, restore electric network data.
Preferably, whether the redundancy capacity value for detecting route according to step B is greater than line load, when the redundancy of route
Capability value is not more than line load, the inadequate route of computer redundancy capacity its therewith needed for load difference, select extended link superfluous
Covolume amount minimum value maximum route finds out the load section for being greater than required load on route, calculates its load value, select this section of load
Bar is closed with what this extended link was associated, selects the maximum route of redundancy capacity minimum value, when route is not required maximum
Load will be made whether that being greater than extended link of the redundancy capacity greater than zero detects, and when route is required peak load, will open
Selected data calculates selected data value.
Preferably, the interconnection switch of non-faulting area network is numbered with natural number according to step B, and to each interconnection switch
Corresponding looped network is individually numbered, and the number of the interconnection switch indicates the dimension of load value, is disconnected in each looped network
The number of switch is every one-dimensional element of load value.
Preferably, the local optimum position for solving invalid load value is set as by constant according to step D, by local optimum position
It is updated to the current location of the load value, according to the adaptive value of the effective load value of seismic responses calculated solution, according to adaptive value
New location updating is the position of the coding by the new position that the coding is calculated separately according to integer coding algorithm.
Preferably, according to step E by new location updating be the coding position after restore power grid coded data again, and
Coded data is optimized.
Compared with prior art, the beneficial effects of the present invention are:
System design rationally, can quickly find the guilty culprit of system, failure is isolated, and can be fast
The optimization and recovery network system of speed.
Detailed description of the invention
Fig. 1 is the restorative reconstruct flow chart of distribution network failure of the present invention；
Fig. 2 is the restorative reconfigurable circuit overhaul flow chart of distribution network failure of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of restorative reconstructing method of distribution network failure, special
Sign is: the following steps are included:
A, electric network fault information, fault point are read；
B, non-faulting area network is encoded according to integer type looped network coding strategy, obtains non-faulting area network code；
C, Fault Isolation restores electricity to non-faulting area；
D, the coding initialized to the network code of faulty section is respectively to the integer coding type quantum load value group
In the solution of each load value carry out Effective judgement, to optimize update to solving effective load value；
E, it obtains fault recovery and reconstructs switch combination, restore electric network data.
Whether the redundancy capacity value of detection route is greater than line load, when the redundancy capacity value of route is negative no more than route
Lotus, the inadequate route of computer redundancy capacity its therewith needed for load difference, select extended link redundancy capacity minimum value max line
Road finds out the load section for being greater than required load on route, calculates its load value, select this section of load and be associated with this extended link
Close bar, select the maximum route of redundancy capacity minimum value, when route is not required peak load, will be made whether to be greater than
Extended link of the redundancy capacity greater than zero detects, and when route is required peak load, will open selected data, calculates selected
Data value.
The interconnection switch of non-faulting area network is numbered with natural number, and looped network corresponding to each interconnection switch is carried out
Individually number, the number of the interconnection switch indicate the dimension of load value, and the number of the switch disconnected in each looped network is load
Every one-dimensional element of value.
The local optimum position for solving invalid load value is set as constant, is the load value by local optimum location updating
Current location, according to the adaptive value of the effective load value of seismic responses calculated solution, according to adaptive value according to integer coding algorithm
New location updating is the position of the coding by the new position for calculating separately the coding.
By new location updating to restore power grid coded data behind the position of the coding again, and coded data is carried out excellent
Change, system design rationally, can quickly find the guilty culprit of system, failure is isolated, and can be quick
Optimization and recovery network system.
The beneficial effects of the present invention are: system design is rationally, the guilty culprit of system can be quickly found, by failure
It is isolated, and quickly can optimizes and restore network system.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
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Application publication date: 20190611 |