CN105117509A - Matrixing method for automatically judging logic of last breaker - Google Patents

Abstract

The present invention proposes a matrixing method for automatically judging the logic of a last breaker. The method comprises the following steps of step 1, establishing an alternating-current field topology matrix; step 2, constructing a connectivity matrix; step 3, constructing a node attribute matrix; step 4, calculating an alternating-current field state matrix; and step 5 comprising the steps: step 5.1, when the conditions, that an element which is equal to X exists in a random line in the alternating-current field state matrix and an element which is equal to Y and an element which is equal to Z exist in the line, are met, executing the step 5.2; step 5.2, acquiring a new alternating-current field state matrix corresponding to a disconnected breaker interval; and step 5.3, when the conditions, that an element which is equal to X does not exist in a random line in the new alternating-current field state matrix and an element which is equal to Y and an element which is equal to Z exist in the line, are not met, determining that the disconnected breaker interval is the last breaker. The matrixing method for automatically judging the logic of the last breaker is convenient and time-saving to modify and simple to maintain and is beneficial to in-time power failure recovery on a production site.

Description

The method of the last isolating switch logic of a kind of matrixing automatic decision

Technical field

The invention belongs to technical field of HVDC transmission, particularly the method for the last isolating switch logic of a kind of matrixing automatic decision.

Background technology

The last isolating switch determining program algorithm used of existing DC engineering is all enumerative techniques.Its way is the design feature according to DC engineering alternating-current field, artificial subjective judgement goes out to meet the back brake mode of last isolating switch feature, enumerate often kind of last isolating switch operating mode, then often kind of operating mode is written as all separately one section of program about the AOI logical combination of on off state.

There is not the unified criterion that last isolating switch judges in this algorithm, but with the subjective judgement of people for standard, so misjudgment, dependence experience may be there is, the unreliable factor such as vary with each individual, the potential risk causing direct current locking.Secondly, n switch then has 2 ⁿplant Switch State Combination in Power Systems, the program that is written as generally has tens or hundreds of operating mode, the huge loaded down with trivial details fallibility of program, and all chance alternating-current field structure changes all need long period revision program again, are unfavorable for sending a telegram in reply in time in production scene.Above defect causes programmed logic need customize according to engineering, even if two of same technology platform engineerings, programmed logic yet disunity is not general, brings certain difficulty to maintenance and use.

The present invention proposes a kind of non-general-purpose algorithm enumerated, with the logical relation of each switch of matrix modeling process alternating-current field, make program carry out automatic decision by unified criterion, do not need artificial subjective judgement or enumerate all last isolating switch operating modes, thus avoid occurring above problem.The same logic of general-purpose algorithm is applicable to different DC engineering, possesses when features such as alternating-current field structure modifications is convenient and time-saving, simple and easy maintenances simultaneously.

Summary of the invention

The object of the present invention is to provide the method for the last isolating switch logic of a kind of matrixing automatic decision, to overcome the huge loaded down with trivial details fallibility of enumerative technique program, the revision program defect such as longer consuming time, there is convenient and time-saving, the simple and easy maintenance of amendment, be conducive to production scene and send a telegram in reply in time.

To achieve these goals, the present invention is realized by following technical proposal:

A method for the last isolating switch logic of matrixing automatic decision, it is applied in the straight-flow system alternating-current field structure of two female 3/2nds wiring, and it comprises the following steps:

Step 1, set up alternating-current field topological structure matrix T ^matrix:

Described alternating-current field topological structure matrix T ^matrixset for the breaker interval state between node each in alternating-current field structure:

$T^{matrix}=\left[\begin{array}{cccccc}{a}_{11}& a_{12}& ...& a_{1j}& ...& a_{1k}\\ a_{21}& a_{22}& ...& a_{2j}& ...& a_{2k}\\ .& .& & .& & .\\ .& .& & .& & .\\ .& .& & .& & .\\ a_{i1}& a_{i2}& ...& a_{ij}& ...& a_{ik}\\ .& .& & .& & .\\ .& .& & .& & .\\ .& .& & .& & .\\ a_{k1}& a_{k2}& ...& a_{kj}& ...& a_{kk}\end{array}\right]---\left(1\right)$

In formula (1), a _ijfor the state of breaker interval between node i and node j, as the breaker interval between node i and node j closes, then a _ij=1, otherwise, then a _ij=0; Meanwhile, this alternating-current field topological structure matrix T ^matrixnumerical value on the principal diagonal node total number that to be 0, k be entirely in alternating-current field structure, k>=i, k>=j;

Step 2, structure connection matrix L ^matrix:

$L^{matrix}={\mathrm{\Σ}}_{x=1}^k{\left(T^{matrix}\right)}^x---\left(2\right)$

Connection matrix L ^matrixin numerical value be 0 or 1, when the element that through type (2) calculates is nonzero element, all replaced by numerical value 1;

Step 3, structure nodal community matrix P ^matrix:

Nodal community matrix P ^matrixfor the diagonal matrix of the capable k row of k, in formula (3), b _ifor the attribute value of node i, defined node is ac bus, the attribute value of transverter, interchange line and alternating current filter is respectively 0, X, Y, Z, wherein: X, Y, Z are the arbitrary value of non-zero;

Step 4, calculating alternating-current field state matrix S ^matrix:

S ^matrix＝((L ^matrix+P ^matrix)|L ^matrix)*P ^matrix(4)

Step 5, criterion:

Described step 5 comprises the following steps:

Step 51, when the conditions described below are satisfied:

Alternating-current field state matrix S ^matrixin there is element in arbitrary row and equal X, and in this row, comprise again the element equaling Y and the element equaling Z;

Then perform step 52;

Step 52, original breaker interval closed to be disconnected one by one, and re-execute the operation of step 1-4, obtain the new alternating-current field state matrix S corresponding to breaker interval of this disconnection ^{matrix '};

Step 53, when discontented foot state condition time:

New alternating-current field state matrix S ^{matrix '}in there is element in arbitrary row and equal X, and in this row, comprise again the element equaling Y and the element equaling Z;

Then this new alternating-current field state matrix S ^{matrix '}the breaker interval of corresponding disconnection is last isolating switch.

The invention describes alternating-current field with the process of matrix modeling, and the architectural feature of various matrix and physical significance: the logic of last isolating switch is determined by the design feature of alternating-current field, realize the mathematical model that automatic decision need set up alternating-current field comprehensive information.According to the design feature of alternating-current field, establish alternating-current field topological structure matrix T ^matrix, connection matrix L ^matrix, nodal community matrix P ^matrix, after matrix operation, obtain alternating-current field state matrix S ^matrix.This matrix contains the information of alternating-current field structure, connected relation, nodal community three aspect.

Wherein, alternating-current field topological structure matrix T ^matrixto be principal diagonal be 0 symmetric matrix, each element represents different internodal direct connection relational; T ^matrixk power be k rank connection matrix, each element represents the indirect connection of different node by k breaker interval; Connection matrix L ^matrixequal each rank connection matrix sum, it comprises two internodal all path information; Nodal community matrix P ^matrixfor diagonal matrix, on principal diagonal, the numerical value of element gets each nodal community numerical value, puts in order and exchanges topological structure matrix and be consistent.

The invention describes the content of last isolating switch unified criterion: unified criterion mainly judges the often row of alternating-current field state matrix, there is when matrix is capable element that numerical value is X but asynchronously exist for the element of Y and Z, represent that alternating-current field occurs converter deblocking but do not have available interchange outlet or alternating current filter, this operating mode meets the feature of last isolating switch.Unified criterion realizes three kinds of last isolating switch situations and judges with a kind of logic, comprises last isolating switch of transverter, last isolating switch of large group alternating current filter, last isolating switch of last circuit.

The present invention has versatility feature, its logic is applicable to different DC engineering: the modeling of alternating-current field matrixing is easy to expansion, make the alternating-current field with different structure feature all can be converted into similar mathematical model, and algorithm unified criterion used is refined by the characteristic of last isolating switch and is formed, be applicable to the alternating-current field of any structure, therefore be applied to the external interface that different DC engineering only need revise algorithm, do not need to revise internal logic.

Instant invention overcomes enumerative technique and rely on the subjective judgement of people, the huge loaded down with trivial details fallibility of program, the revision program defect such as longer consuming time, the program that realizes carries out automatic decision by unified criterion, there is convenient and time-saving, the simple and easy maintenance of amendment, enter the features such as gate threshold is low, be conducive to engineer applied and exchange study.

The present invention compared with prior art, has the following advantages:

(1) program that realizes carries out automatic decision by unified criterion, does not rely on artificial subjective judgement, does not rely on engineering experience, greatly improves the reliability of algorithm.

(2) matrix modeling and unified criterion are applicable to difference and exchange structure, and general-purpose algorithm is applicable to different DC engineering, is conducive to engineer applied and exchange study.

(3) general-purpose algorithm clear logic, overcomes the huge loaded down with trivial details fallibility of enumerative technique program, the revision program defect such as longer consuming time, has convenient and time-saving, the simple and easy maintenance of amendment, be conducive to production scene and send a telegram in reply in time.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of a string two female 3/2nds wiring;

Fig. 2 is the process flow diagram of the method for the last isolating switch logic of a kind of matrixing automatic decision;

Fig. 3 is the schematic diagram of two female 3/2nds wiring of three strings, and wherein, breaker interval 5012,5021 points and 5023 is in off-state, and all the other breaker intervals are all in the state of closing;

Fig. 4 is the schematic diagram after being disconnected by breaker interval 5032 on the basis of Fig. 3, now valve group locking, and current path disappears, remaining two kinds of equipment on former path;

Fig. 5 is the schematic diagram after being disconnected by breaker interval 5022 on the basis of Fig. 3, does not now affect primary current path, path still has three kinds of equipment.

Embodiment

Below in conjunction with the drawings and specific embodiments, content of the present invention is described in further details.

Straight-flow system alternating-current field structure is generally two female 3/2nds wiring, and nodes k is greater than breaker interval number n (k>n).The line number of dissimilar matrix, columns are equal to k below, and the physical significance representated by corresponding row and column is consistent.

1, alternating-current field topological structure matrix: T ^matrix

The different alternating-current field modes of connection has different last isolating switch logics, and therefore general-purpose algorithm should reflect the topological structure of alternating-current field comprehensively.Mathematical modeling take matrix as instrument, structure alternating-current field topological structure matrix T ^matrix.If regulation matrix often row represents a node of alternating-current field, corresponding row (row sequence number equals line order number) also represent this node, the point of crossing of so different row and column, namely the element in matrix, can be used for representing different internodal direct connection relational, if two nodes are directly communicated with, element is 1, otherwise is 0.Straight-flow system alternating-current field structure is generally two female 3/2nds wiring, directly connected by breaker interval (comprising both sides every cutter) between bus or node, therefore breaker interval closes and represents two nodes and be directly communicated with, and the matrix element of correspondence should be put 1, otherwise set to 0.Alternating-current field topological structure matrix T can be constructed by above regulation modeling ^matrix, putting in order of flexible concept transfer must be reduced to the symmetric matrix that principal diagonal is 0.

As only having a string two female 3/2nds wiring, as shown in Figure 1, female I connects A by Breaker1, and A connects B by Breaker2, and B connects female II by Breaker3, so alternating-current field topological structure matrix T ^matrixfor:

2, connection matrix: L ^matrix

Alternating-current field is by deciliter different breaker interval, and realize the direct or indirect connection of any two node connected equipments, algorithm should comprise the connected state information of different node.Two nodes that breaker interval is connected realize directly being communicated with by this breaker interval that closes, but two nodes that non-breaker interval is connected can only form path by multiple breaker interval that closes realizes indirect communication, and implementation is not unique, namely there is multiple path and realizes indirect communication.Therefore the key of algorithms of different is how to select the breaker interval forming path, then judge its on off operating mode.

The enumerative technique that existing DC engineering adopts is the mode artificially judged, determines all paths of indirect communication, then by each breaker interval write algorithm on path, carries out on off operating mode judgement.General-purpose algorithm of the present invention constructs connection matrix L ^matrix, realize automatically establishing any two internodal all paths of alternating-current field, and determining each breaker interval on path.

Connection matrix L ^matrixequal each rank connection matrix sum.In the connection matrix of k rank, each element represents the connection of two nodes by k breaker interval, and element numerical value is that 1 representative is connected, otherwise is 0.

Equally to only have a string two female 3/2nds wiring (as shown in Figure 1), two nodes be so connected by 1 breaker interval are had: female I and A, A and B, B and female II; Two nodes be connected by 2 breaker intervals are had: female I and female I, A and A, B and B, female II and female II, female I and B, A and female II; The node be connected by 3 breaker intervals is had: female I and A, A and B, B and female II, female I and female II; The node be connected by 4 breaker intervals is had: female I and female I, A and A, B and B, female II and female II, female I and B, A and female II, therefore:

1 rank connection matrix is [0,1,0,0; 1,0,1,0; 0,1,0,1; 0,0,1,0],

2 rank connection matrix are [1,0,1,0; 0,1,0,1; 1,0,1,0; 0,1,0,1],

3 rank connection matrix are [0,1,0,1; 1,0,1,0; 0,1,0,1; 1,0,1,0],

4 rank connection matrix are [1,0,1,0; 0,1,0,1; 1,0,1,0; 0,1,0,1],

Connection matrix L ^matrix[1,1,1,1; 1,1,1,1; 1,1,1,1; 1,1,1,1 ,] represent that in node female I, A, B, female II, any two nodes are all communicated with.So analogize, k node then has k rank connection matrix.

By above definition, alternating-current field topological structure matrix T ^matrixbe exactly 1 rank connection matrix in fact, and easily prove that k rank connection matrix equals the k power of 1 rank connection matrix and nonzero element is changed to 1.As long as therefore know alternating-current field topological structure, just can easily obtain connection matrix L by the automatic computing of computing machine ^matrix, and do not need artificially to judge and enumerate.

Because each rank connection matrix contains all mode of communicating (containing being directly or indirectly communicated with) of two nodes, consider all break-makes combination (because nodes k is greater than breaker interval number n) of each breaker interval, therefore connection matrix L ^matrixcontain two internodal all path information, automatically can select the multiple breaker intervals on path, then its on off operating mode be judged.

3, nodal community matrix: P ^matrix

Alternating-current field is for configuring the different mode of communicating of ac bus, transverter, interchange outlet (or inlet wire) and alternating current filter, and algorithm should comprise the information of different node connected equipment.In order to distinguish dissimilar equipment, reply distinct device sets different attribute value, and such as setting ac bus is 0, and transverter is X, exchanging outlet (or inlet wire) is Y, alternating current filter is Z, here with X=1, Y=-1, Z=-2 is example structure diagonal matrix, arrangement of elements order on principal diagonal with exchange topological structure matrix and be consistent, the numerical value of element gets attribute value, obtains nodal community matrix P ^matrix.

4, alternating-current field state matrix: S ^matrix

Nodal community matrix P ^matrix, connection matrix L ^matrixcan obtain alternating-current field state matrix through logical OR computing and computing, multiplication, therefore this matrix comprises the topological structure of alternating-current field, each node connected state, this tripartite's surface information of each nodal community, shown in the following equation of concrete mathematical relation:

S ^matrix＝((L ^matrix+P ^matrix)|L ^matrix)*P ^matrix

The often row (or often arranging) of alternating-current field state matrix represents the annexation of this node and other nodes, by reading the capable nonzero element of matrix, can determine that this node and which node exist path, and having which equipment connection on path.As the 3rd behavior [1 ,-1,0 ,-1,0 ,-2 of matrix, 0 ,-1], so node 1,2,4,5, be communicated with between 7, its interior joint 1 attached device is transverter, node 2,4, and 5,7 attached device are respectively and exchange outlet first, interchange outlet second, alternating current filter, interchange outlet third.

5, last isolating switch unified criterion

When straight-flow system normally send power, alternating-current field must be connected with transverter along current path, exchange outlet (or inlet wire), alternating current filter.After certain isolating switch of alternating-current field disconnects, certain equipment loses with alternating-current field and is connected, and causes the equipment that current path connects to be not enough to three kinds, or current path disappears, then this isolating switch is exactly last isolating switch.Therefore last isolating switch generally comprises three kinds of situations, i.e. last isolating switch of transverter, last isolating switch of large group alternating current filter, last isolating switch of last circuit.

Can only carry out for existing algorithm the defect enumerating various last isolating switch, the above feature of last isolating switch, in conjunction with alternating-current field state matrix, can be converted into a unified criterion, realize three kinds of situations and judge with a kind of logic by the present invention.

Unified criterion mainly judges the often row of alternating-current field state matrix, namely current line exist certain element equal 1 time, this row simultaneously containing the element that numerical value is-1 and-2, otherwise just normally must can not send power.Therefore unified criterion is: current line exists certain element and equals 1, and this row is the element of-1 and-2 containing numerical value simultaneously.

Gather deciliter state of each isolating switch, computing obtains corresponding alternating-current field state matrix, carries out first stage judgement according to above criterion.Then, the isolating switch that algorithm simulation is closed disconnects one by one, and calculates exchange status matrix at this moment, carries out subordinate phase judgement according to above criterion.

First, second stage represent respectively certain isolating switch is closed, judgement when disconnecting, if first stage judgement meets criterion, subordinate phase judges not meet criterion simultaneously, after so illustrating that this isolating switch disconnects, the equipment that current path connects can be caused to be not enough to three kinds or current path disappearance, then this isolating switch is last isolating switch.

Fig. 2 shows the flow process of the last isolating switch of automatic decision, comprises the processing procedure of each matrix and the use principle of unified criterion: please refer to shown in Fig. 2, and the method for the last isolating switch logic of matrixing automatic decision, comprises the following steps:

Initialization procedure (first stage):

A () initial assignment: each nodal community of alternating-current field is known, directly obtains nodal community matrix P ^matrixwith the alternating-current field of three string 3/2nds wiring for example, as shown in Figure 3, it contains: bus I, II (property value is 0), transverter A, B (property value is 1), outlet A, B (property value is-1), alternating current filter A, B (property value is-2):

(b) matrix disposal: by gathering deciliter state (step b and step a can exchange) of each breaker interval:

5011 conjunctions, 5012 points, 5013 conjunctions;

5021 points, 5022 close, 5023 points;

5031 conjunctions, 5032 are closed, 5033 conjunctions;

Form alternating-current field topological structure matrix T ^matrix, calculate its 1 power and obtain connection matrix L to k power sum ^matrix, then with nodal community matrix P ^matrixcarry out logical OR computing and computing, multiplication can obtain alternating-current field state matrix.

Can topological matrix be exchanged thus as follows:

Substitute into deciliter state of breaker interval:

$T^{matrix}=\left[\begin{array}{cccccccc}0& 0& 1& 0& 0& 0& 1& 0\\ 0& 0& 0& 1& 0& 0& 0& 1\\ 1& 0& 0& 0& 0& 0& 0& 0\\ 0& 1& 0& 0& 0& 0& 0& 0\\ 0& 0& 0& 0& 0& 1& 0& 0\\ 0& 0& 0& 0& 1& 0& 0& 0\\ 1& 0& 0& 0& 0& 0& 0& 1\\ 0& 1& 0& 0& 0& 0& 1& 0\end{array}\right]$

Calculate alternating-current field state matrix:

$S^{matrix}=\left[\begin{array}{cccccccc}0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 0& 0& -1& -2& 0& 0\\ 0& 0& 0& 0& -1& -2& 0& 0\\ 0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 1& -1& 0& 0& -2& 1\end{array}\right]$

(c) loop computation: the often row of alternating-current field state matrix is judged one by one, if all meet unified criterion, enters next step, otherwise then export " transverter does not unlock or condition does not meet ".

Above-mentioned S ^matrixin, meet " there is certain element and equal 1 in current line; and this row again simultaneously containing numerical value equal-1 and equal-2 element (if there is certain element at current line to equal 1; only equal in other elements of this row-1 or-2 or be all not equal to-1 or-2 situation time; then do not meet unified criterion) ", (equipment as can be seen from Figure 3, current path connected has three kinds), therefore the first stage judges to meet unified criterion, can enter subordinate phase and judge.

Automatically last isolating switch process (subordinate phase) is searched:

D () last isolating switch judges: simulation disconnects certain originally closed breaker interval (namely relevant position becomes 0), then invoke code " matrix disposal " and " loop computation ", but code " loop computation " output content becomes the numbering of this isolating switch, then this isolating switch is last isolating switch.

E () searches automatically: the isolating switch that each script is closed simulates disconnection one by one, and invoke code " last isolating switch judgement " judges it, finds out the numbering of all last isolating switchs.

Subordinate phase judges that simulating the breaker interval 5011,5013,5022,5031,5032,5033 originally closed disconnects one by one, obtains new T ^{matrix '}with ab iitio S ^{matrix '}(P ^matrixconstant), be described to disconnect 5032 and 5022 respectively:

1. simulate disconnection 5032, now the element of 5032 correspondences becomes 0, then the matrix that the first stage is original relatively, T ^{matrix '}and S ^{matrix '}become (adding boldface type is the element that numerical value changes):

$T^{{\mathrm{matrix}}^{,}}=\left[\begin{array}{cccccccc}0& 0& 1& 0& 0& 0& 1& 0\\ 0& 0& 0& 1& 0& 0& 0& 1\\ 1& 0& 0& 0& 0& 0& 0& 0\\ 0& 1& 0& 0& 0& 0& 0& 0\\ 0& 0& 0& 0& 0& 0& 0& 0\\ 0& 0& 0& 0& 0& 0& 0& 0\\ 1& 0& 0& 0& 0& 0& 0& 1\\ 0& 1& 0& 0& 0& 0& 1& 0\end{array}\right]$

$S^{{\mathrm{matrix}}^{,}}=\left[\begin{array}{cccccccc}0& 0& 1& 0& 0& 0& -2& 0\\ 0& 0& 0& -1& 0& 0& 0& 1\\ 0& 0& 1& 0& 0& 0& -2& 0\\ 0& 0& 0& -1& 0& 0& 0& 1\\ 0& 0& 0& 0& -1& -2& 0& 0\\ 0& 0& 0& 0& -1& -2& 0& 0\\ 0& 0& 1& 0& 0& 0& -2& 0\\ 0& 0& 0& -1& 0& 0& 0& 1\end{array}\right]$

S ^{matrix '}contrast unified criterion, first, second, third and fourth, seven, eight row all meet " there is certain element and equal 1 in current line; and this row again simultaneously containing numerical value equal-1 and equal-2 element (the 5th, six row do not relate to the element equaling 1; ignore) " (as can be seen from Figure 4, the equipment that current path connects only has two kinds), therefore subordinate phase simulation disconnection 5032 meets unified criterion, and Output rusults 5032 is last isolating switch.

2. simulate disconnection 5022, now the element of 5022 correspondences becomes 0, then the matrix that the first stage is original relatively, T ^{matrix '}and S ^{matrix '}become (adding boldface type is the element that numerical value changes):

$T^{{\mathrm{matrix}}^{,}}=\left[\begin{array}{cccccccc}0& 0& 1& 0& 0& 0& 1& 0\\ 0& 0& 0& 1& 0& 0& 0& 1\\ 1& 0& 0& 0& 0& 0& 0& 0\\ 0& 1& 0& 0& 0& 0& 0& 0\\ 0& 0& 0& 0& 0& 1& 0& 0\\ 0& 0& 0& 0& 1& 0& 0& 0\\ 1& 0& 0& 0& 0& 0& 0& 0\\ 0& 1& 0& 0& 0& 0& 0& 0\end{array}\right]$

$S^{{\mathrm{matrix}}^{,}}=\left[\begin{array}{cccccccc}0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 0& 0& -1& 0& 0& 0\\ 0& 0& 0& 0& 0& -2& 0& 0\\ 0& 0& 1& -1& 0& 0& -2& 1\\ 0& 0& 1& -1& 0& 0& -2& 1\end{array}\right]$

S ^{matrix '}contrast unified criterion, each row all meet " there is certain element and equal 1 in current line; and this row again simultaneously containing numerical value equal-1 and equal-2 element) " (as can be seen from Figure 5, the equipment that current path connects still has three kinds), therefore subordinate phase simulation disconnection 5022 does not meet unified criterion, and 5022 is not last isolating switch.

By that analogy, remaining 5011,5013,5031,5033 simulation is disconnected one by one, whole last isolating switchs can be found out.

Above-described embodiment, just in order to technical conceive of the present invention and feature are described, its objective is and is one of ordinary skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.The change of every equivalence made according to the essence of content of the present invention or modification, all should be encompassed in protection scope of the present invention.

Claims (1)

1. a method for the last isolating switch logic of matrixing automatic decision, it is applied in the straight-flow system alternating-current field structure of two female 3/2nds wiring, and it is characterized in that, it comprises the following steps:

Step 1, set up alternating-current field topological structure matrix T ^matrix:

Described alternating-current field topological structure matrix T ^matrixset for the breaker interval state between node each in alternating-current field structure:

$T^{matrix}=\left[\begin{array}{cccccc}{a}_{11}& a_{12}& \mathrm{...}& a_{1j}& \mathrm{...}& a_{1k}\\ a_{21}& a_{22}& \mathrm{...}& a_{2j}& \mathrm{...}& a_{2k}\\ .& .& & .& & .\\ .& .& & .& & .\\ .& .& & .& & .\\ a_{i1}& a_{i2}& \mathrm{...}& a_{ij}& \mathrm{...}& a_{ik}\\ .& .& & .& & .\\ .& .& & .& & .\\ .& .& & .& & .\\ a_{k1}& a_{k2}& \mathrm{...}& a_{kj}& \mathrm{...}& a_{kk}\end{array}\right]---\left(1\right)$

In formula (1), a _ijfor the state of breaker interval between node i and node j, as the breaker interval between node i and node j closes, then a _ij=1, otherwise, then a _ij=0; Meanwhile, this alternating-current field topological structure matrix T ^matrixnumerical value on the principal diagonal node total number that to be 0, k be entirely in alternating-current field structure, k>=i, k>=j;

Step 2, structure connection matrix L ^matrix:

$L^{matrix}={\mathrm{\Σ}}_{x=1}^k{\left(T^{matrix}\right)}^x---\left(2\right)$

Connection matrix L ^matrixin numerical value be 0 or 1, when the element that through type (2) calculates is nonzero element, all replaced by numerical value 1;

Step 3, structure nodal community matrix P ^matrix:

Nodal community matrix P ^matrixfor the diagonal matrix of the capable k row of k, in formula (3), b _ifor the attribute value of node i, defined node is ac bus, the attribute value of transverter, interchange line and alternating current filter is respectively 0, X, Y, Z, wherein: X, Y, Z are the arbitrary value of non-zero;

Step 4, calculating alternating-current field state matrix S ^matrix:

S ^matrix＝((L ^matrix+P ^matrix)|L ^matrix)*P ^matrix(4)

Step 5, criterion:

Described step 5 comprises the following steps:

Step 51, when the conditions described below are satisfied:

Alternating-current field state matrix S ^matrixin there is element in arbitrary row and equal X, and in this row, comprise again the element equaling Y and the element equaling Z;

Then perform step 52;

Step 52, original breaker interval closed to be disconnected one by one, and re-execute the operation of step 1-4, obtain the new alternating-current field state matrix S corresponding to breaker interval of this disconnection ^{matrix '};

Step 53, when discontented foot state condition time:

New alternating-current field state matrix S ^{matrix '}in there is element in arbitrary row and equal X, and in this row, comprise again the element equaling Y and the element equaling Z;

Then this new alternating-current field state matrix S ^{matrix '}the breaker interval of corresponding disconnection is last isolating switch.