CN103678369A - Grid fault recovery path search method based on switch disconnecting links and subsystems - Google Patents
Grid fault recovery path search method based on switch disconnecting links and subsystems Download PDFInfo
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- CN103678369A CN103678369A CN201210341705.0A CN201210341705A CN103678369A CN 103678369 A CN103678369 A CN 103678369A CN 201210341705 A CN201210341705 A CN 201210341705A CN 103678369 A CN103678369 A CN 103678369A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
Abstract
The invention discloses a grid fault recovery path search method based on switch disconnecting links and subsystems. On the basis of a power grid model which is equivalent to the switch disconnecting links and the subsystems, a power supply recovery path is searched for by searching for the independent subsystems which are formed after a fault of a power grid happens, and the switch disconnecting links used for connecting the subsystems, and a breadth-first search strategy is adopted in the process of searching. According to the method, on the basis of a VC2010 programming tool, fault simulation is carried out by using a local power grid model of some area, and the power supply path is searched for.
Description
Technical field
The invention belongs to Power system fault restoration field, particularly a kind of electric network fault restoration path searching method based on switch tool-subsystem.
Background technology
Chinese scholars is introduced the network topological method based on node-subsystem, according to switch tool state, electrical network is divided into node and the subsystem of a plurality of internal communication, is the route searching condition that facilitates.Many scholars propose to utilize the methods such as fuzzy theory, genetic algorithm, artificial neural network to realize fault recovery, but these methods mainly rest on theoretical research aspect, are difficult to on-the-spot actual.Separately have scholar to propose to utilize Implementation of Expert System fault recovery, but the method need to build huge knowledge base, when SNA changes, need to do a large amount of data maintenances, also be unsuitable for on-line operation.In addition to the above methods, the strategy that has scholar to propose to search for one by one based on disconnector, in strategy, the priority of load is sorted, but the method process is too loaded down with trivial details, and travelling speed is slow, inapplicable online application.
Summary of the invention
A kind of electric network fault restoration path searching method based on switch tool-subsystem, it is characterized in that by network equivalence be switch tool-subsystem model, wherein subsystem is divided into having electronic system, not having electronic system, betatopic system three major types, or is divided into terminal subsystem, non-terminal subsystem two classes; Route searching adopts the search strategy of breadth-first, from non-fault betatopic system, by switch tool that search subsystem connects, finds all adjacent subsystems of this subsystem, and repetitive operation, until find having electronic system or terminal subsystem.
For achieving the above object, technical scheme of the present invention is achieved in that
Having proposed a kind of electric network fault restoration path searching method based on switch tool-subsystem, is switch tool-subsystem model by network equivalence; Subsystem is divided into having electronic system, not having electronic system, betatopic system three classes, or is divided into terminal subsystem and non-terminal subsystem two classes; Before route searching, the switch tool being connected with fault betatopic system is carried out to mark, each non-fault betatopic system is carried out to prioritization according to load significance level simultaneously; According to network equivalence model, adopt the search strategy of breadth-first, from the highest non-fault betatopic system of priority, by switch tool that search subsystem connects, find all adjacent subsystems of this subsystem, repetitive operation, until find having electronic system or terminal subsystem; In search procedure, the switch tool of having searched for and subsystem are carried out to mark.
A modification of the present invention is to be subsystem-switch tool model by network equivalence, has improved restoration path search efficiency.
A modification of the present invention is that subsystem is divided into having electronic system, having electronic system not, betatopic system three major types, or be divided into terminal subsystem, non-terminal subsystem two classes, having electronic system does not refer to all uncharged subsystems of fault front and back, betatopic system refers to the subsystem having a power failure because of fault, be divided into again non-fault betatopic system and fault betatopic system, non-fault betatopic system refers to not contain the betatopic system of faulty equipment, fault betatopic system refers to the betatopic system that comprises faulty equipment, terminal subsystem is a kind of non-having electronic system, its adjacent subsystems has fault flag or search mark.
A modification of the present invention is before route searching, and the switch tool being connected with each fault betatopic system is carried out to mark, avoids searching unreliable path.
A modification of the present invention is before searching route, and each non-fault betatopic system is carried out to prioritization according to load significance level, so that the power supply of priority restores important load.
A modification of the present invention is, in search procedure, the subsystem of having searched for or switch are carried out to mark, in order to avoid repeat search is absorbed in endless loop.
A modification of the present invention is to start search from the highest non-fault betatopic system of priority, adopts breadth-first search strategy, traversal the path that likely antithetical phrase system is recovered, improved the complete degree in service restoration path.
Accompanying drawing explanation
Fig. 1 is somewhere partial electric grid illustraton of model, and in figure, 2 transformers are faulty equipment, and 2202,1102,1002 disconnect, and have formed fault betatopic system; 10kV bus is non-fault dead electricity equipment, has formed non-fault betatopic system; 1001 isolating switchs are charging equipment not, form not having electronic system: remainder equipment forms having electronic system.
Fig. 2 is network equivalence illustraton of model;
Fig. 3 is fault recovery route searching process flow diagram;
Embodiment
As shown in Figure 3, from non-fault betatopic system, by switch tool that search subsystem connects, find the adjacent subsystems of this subsystem; If adjacent subsystems is charged or adjacent subsystems is terminal subsystem, mark this be a paths, otherwise just carry out multilayer search until find having electronic system or terminal subsystem.
As shown in Figure 2, the subsystem 4 non-fault betatopic system for forming after fault, subsystem 3 is fault betatopic system, and subsystem 2 is having electronic system not, and subsystem 1 is having electronic system.Before route searching, the switch tool C, the D that are connected with fault betatopic system 3 are carried out to mark.From subsystem 4, start search, search two adjacent subsystems 2 and 3, owing to 3 being fault subsystem, switch tool D is labeled, can not be as a paths; Subsystem 2 is not charged, continues the adjacent subsystems 1 of search subsystem 2, and subsystem 1 is having electronic system, so switch tool B+A is a restoration path; In search procedure, every search one step, carries out mark to the subsystem of searching for and switch tool, prevents from along switch tool B, back searching subsystem 4 from subsystem 2.
In sum, the electric network fault restoration path searching method based on switch tool-subsystem of the present invention's design, efficiently solve after electric network fault, the problem of fast searching dead electricity block supply restoration path how, the method that the subsystem of take is searched for as unit, improve the efficiency of route searching, utilized breadth-first search, improved the complete degree of route searching.By somewhere partial electric grid is carried out to fault simulation, and carry out route searching on this basis, obtained good effect, verified correctness and the validity of the electric network fault restoration path searching method based on switch tool-subsystem.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., be all included in protection scope of the present invention.
Claims (5)
1. the electric network fault reverse-path searching method based on switch tool-subsystem model, its characteristic is basic composition, annexation and the network topology model based on electrical equipment in electrical network, by Topology Analysis Based, by network equivalence, be switch tool-subsystem model, wherein subsystem is divided into having electronic system, not having electronic system, betatopic system three major types, or is divided into terminal subsystem, non-terminal subsystem two classes; Betatopic system is divided into fault betatopic system and non-fault betatopic system; Before route searching, the switch tool being connected with fault betatopic system is carried out to mark, each non-fault betatopic system is carried out to prioritization according to load significance level simultaneously; Route searching adopts the search strategy of breadth-first, from the highest non-fault betatopic system of priority, by switch tool that search subsystem connects, find all adjacent subsystems of this subsystem, repetitive operation, until find having electronic system or terminal subsystem; In search procedure, the switch tool of having searched for and subsystem are carried out to mark; After All Paths search finishes,, grid net loss rate out-of-limit by, switch tool number of operations out-of-limit to path trend, busbar voltage, five indexs of electrical network margin capacity calculate optimum fault recovery path.
2. restoration path searching method as claimed in claim 1, is characterized in that, subsystem is divided into having electronic system, not having electronic system, betatopic system three classes, and wherein, having electronic system does not refer to before and after fault all uncharged subsystems; Betatopic system refers to the subsystem having a power failure because of fault, be divided into again non-fault betatopic system and fault betatopic system, wherein non-fault betatopic system refers to that fault betatopic system refers to the betatopic system that comprises faulty equipment not containing the betatopic system of faulty equipment.
3. restoration path searching method as claimed in claim 1, is divided into terminal subsystem, non-terminal subsystem two classes by subsystem, and terminal subsystem is a kind of non-having electronic system, and its adjacent subsystems has fault flag or search mark.
4. restoration path searching method as claimed in claim 1, it is characterized in that, according to network equivalence model, by searching for non-fault betatopic switch tool that system connects, find the adjacent subsystems of this subsystem, if adjacent subsystems is not charged and be non-terminal subsystem, continue search, until find having electronic system or terminal subsystem, often search a restoration path, need carry out mark storage.
5. restoration path searching method as claimed in claim 1, it is characterized in that: after All Paths search finishes,, grid net loss rate out-of-limit by, switch tool number of operations out-of-limit to path trend, busbar voltage, five indexs of electrical network margin capacity calculate optimum fault recovery path; Its computing formula is as follows:
Wherein: the comprehensive optimum evaluation index of I---restoration path, result of calculation is little shows that this path is relatively excellent;
P
i--be the out-of-limit rate of trend of out-of-limit equipment,
p
iXfor the trend size of out-of-limit electrical equipment i, P
iMrated power for electrical equipment i;
The total quantity of out-of-limit electrical equipment in the whole electrical network of n--;
K, K '---in this path, need the switch tool quantity of operation and electrical network interior for dividing whole switch tool quantity for position;
The bus quantity of voltage out-of-limit and the whole bus quantity in electrical network in B, B '---electrical network;
L---grid net loss rate;
BK---electrical network margin capacity;
P
∑--the summation of all loads of the whole network;
α, β, δ, γ, λ are sensitivity coefficient, set respectively 0≤α, β, δ, γ, λ≤1 according to electrical network actual conditions; 0≤alpha+beta+δ+γ+λ≤1.
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| CN201210341705.0A CN103678369A (en) | 2012-09-17 | 2012-09-17 | Grid fault recovery path search method based on switch disconnecting links and subsystems |
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| CN201210341705.0A CN103678369A (en) | 2012-09-17 | 2012-09-17 | Grid fault recovery path search method based on switch disconnecting links and subsystems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106159948A (en) * | 2016-08-23 | 2016-11-23 | 国网山西省电力公司电力科学研究院 | Based on matrix disappear unit grid fault recovery path search method |
| CN111445633A (en) * | 2020-03-06 | 2020-07-24 | 国电南瑞科技股份有限公司 | Method for searching electrified bus node to endow electricity price according to physical connection of uncharged bus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106159948A (en) * | 2016-08-23 | 2016-11-23 | 国网山西省电力公司电力科学研究院 | Based on matrix disappear unit grid fault recovery path search method |
| CN111445633A (en) * | 2020-03-06 | 2020-07-24 | 国电南瑞科技股份有限公司 | Method for searching electrified bus node to endow electricity price according to physical connection of uncharged bus |
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