CN106707070A - Quick-break setting simulation verification method for mixed-structure mine high-voltage power grid - Google Patents
Quick-break setting simulation verification method for mixed-structure mine high-voltage power grid Download PDFInfo
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Abstract
The invention discloses a quick-break setting simulation verification method for a mixed-structure mine high-voltage power grid, and the method comprises the steps: calculating an incidence matrix TH, an incidence matrix NH and an incidence matrix G according to the connectivity of a single-direction graph; obtaining a branch node set T with the instantaneous quick-break fixed value being less than a fault current according to the incidence matrix NH and the incidence matrix G; obtaining a set X of all switches which need to be switched off because of a short-circuit fault according to the node set T, and switching off the corresponding switch according to the obtained set X, and carrying out the tripping operation. According to the characteristics of a power supply system of the mixed-structure mine high-voltage power grid, a corresponding network topology model is built, and the topology recognition of the mixed-structure mine high-voltage power grid can be completed conveniently. Based on the above, the set of switches which need to be switched off because of the short-circuit fault is obtained, so as to verify whether the current quick-break setting meet the requirements of reliability and selectivity or not, and achieve the purpose of quick-break setting simulation verification.
Description
Technical field
Emulation inspection method is set the invention discloses a kind of mixed structure mining high-voltage electric-network quick-break, belongs to colliery high pressure
Electric grid relay protection realistically displayed field.
Background technology
There are multiple power supplys in the power network of more than 35kV, belong to complicated enclosed power network, calculation of fault and set for quick-break
The simulation speed-up put is complex；And mining high-voltage electric-network is 6kV or 10kV grades, two power supplys should use fanout operation side
Formula, or belong to single supply open type power network using standby all the way all the way.
Generally, in mining high-voltage electric-network, adjacent outlet switch is all that the bus from after service entrance switch is drawn,
But using this mode of connection underground coal mine series of powering can be caused more, when be short-circuited failure when be easily caused tripping operation of bypassing the immediate leadership
Phenomenon, in order to reduce the power supply series of colliery high voltage supply system, employs comprising T-type structure and in some collieries
As structure mixed structure colliery high voltage supply system, so as to effectively limitation colliery high voltage supply system power supply series.
Document " the mining high-voltage electric-network quick-break based on incidence matrix sets emulation inspection method " is directed to generally
Colliery high voltage supply system complete quick-break simulation speed-up be set, for the mine high-tension electricity of the mixed structure comprising T-type structure
The quick-break of net sets emulation inspection method and has not been reported.
A kind of mixed structure mining high-voltage electric-network quick-break proposed by the present invention sets emulation inspection method can be according to mixing
The electric power system feature of structure mining high-voltage electric-network constructs the network topology model of mixed structure mine high voltage supply system, can
The topology Identification of mixed structure mine high voltage supply system supply network is easily completed, and is obtained based on this because short
Road failure needs the switch set of tripping operation, performs trip operation.Finally, the switch trip result for being obtained according to emulation judges herein
In the case of failure, whether current quick-break sets meet reliability and selectivity requirement, and simulation speed-up is set to reach quick-break
Purpose.
The content of the invention
For mine high voltage supply system, the power branch node of mine high voltage supply system, power branch node are set
It refer to the branch node directly powered by higher level's power supply department；Set corresponding for the corresponding high-voltage switch gear of all branch nodes
Instantaneous quick-break definite value, is stored in instantaneous quick-break value vector SD, and corresponding branch can be found in SD according to branch node numbering
The instantaneous quick-break definite value that the corresponding high-voltage switch gear of circuit node is set；Set corresponding for the corresponding high-voltage switch gear of all main line nodes
Instantaneous quick-break definite value, be stored in instantaneous quick-break value vector GSD, phase can be found in GSD according to main line node serial number
The instantaneous quick-break definite value for answering node corresponding high-voltage switch gear in main line to set.
For mine high voltage supply system, switched as inlet wire node, with high-voltage terminal using the bus of service entrance switch connection
The branch road of connection as branch node, the main line using the connection of main line high-voltage switch gear as main line node, if inlet wire node has m
Individual, branch node has n, and main line node has k, then closed according to the connection between electrical equipment in mine high voltage supply system figure
The incidence matrix A of system generation main line node and main line node, the incidence matrix B of main line node and branch node, inlet wire node with
The incidence matrix E of the incidence matrix D of main line node, branch node and inlet wire node, inlet wire node associates square with branch node
Battle array TE；Incidence matrix A is arranged for k rows k, and incidence matrix A, as line number, is row with main line node sequence number with main line node sequence number
Number；Incidence matrix B be k rows n row, incidence matrix B with main line node sequence number as line number, with branch node serial number as row number；
Incidence matrix D be m rows k row, incidence matrix D with inlet wire node sequence number as line number, with main line node sequence number as row number；Association
Matrix E be n rows m row, incidence matrix E with branch node serial number as line number, with inlet wire node sequence number as row number；Incidence matrix
TE be m rows n row, incidence matrix TE with inlet wire node sequence number as line number, with branch node serial number as row number；Specific steps are such as
Under：
（1）During generation incidence matrix A, the element of the i-th row jth row is used in ARepresent；It is not equal to the situation of j in i
Under, if the corresponding main line node of the i-th row arranges corresponding main line node by jth directly power, and the corresponding main line node of the i-th row
To close a floodgate, it is combined floodgate that jth arranges high-voltage switch gear state on corresponding main line node to upper high-voltage switch gear state, then, otherwise；In the case where i is equal to j, if high-voltage switch gear state is to close a floodgate on the corresponding main line node of the i-th row,,
Otherwise；
（2）During generation incidence matrix B, the element of the i-th row jth row is used in BRepresent, if the i-th row is corresponding dry
Circuit node arranges corresponding branch node and directly powers by jth, and high-voltage switch gear state is conjunction on the corresponding main line node of the i-th row
Lock, it is combined floodgate that jth arranges high-voltage switch gear state on corresponding branch node, then；Otherwise；
（3）During generation incidence matrix D, the element of the i-th row jth row is used in DRepresent, if the i-th row it is corresponding enter
Line node arranges corresponding main line node and directly powers by jth, and high-voltage switch gear state is conjunction on the corresponding inlet wire node of the i-th row
Lock, it is combined floodgate that jth arranges high-voltage switch gear state on corresponding main line node, then；Otherwise；
（4）During generation incidence matrix E, the element of the i-th row jth row is used in ERepresent, if the corresponding branch of the i-th row
Circuit node arranges corresponding inlet wire node and directly powers by jth, and high-voltage switch gear state is conjunction on the corresponding branch node of the i-th row
Lock, it is combined floodgate that jth arranges high-voltage switch gear state on corresponding inlet wire node, then；Otherwise；
（5）During generation incidence matrix TE, the element of the i-th row jth row is used in TERepresent, if the i-th row correspondence
Inlet wire node corresponding branch node arranged by jth directly power, and high-voltage switch gear state is on the corresponding inlet wire node of the i-th row
Close a floodgate, it is combined floodgate that jth arranges high-voltage switch gear state on corresponding branch node, then；Otherwise。
Main line node and branch node are calculated according to incidence matrix A and B finally to power incidence matrix, incidence matrixFor
K rows n is arranged, in matrixIn can describe certain main line node and powered by which branch node, when matrix operation is completed, will
Matrix element is defined as binary system and computing with matrix element multiplying, and matrix element is determined with the add operation of matrix element
Justice is binary system or computing；Specific calculation procedure is as follows：
（1）According to the opening and closing state of outlet switch on branch node, high-voltage switch gear switch state vector on generation branch node
S, S include n element；In S, on off state closes a floodgate, and corresponding element value is 1；Conversely, being then 0；
（2）According to the opening and closing state of high-voltage switch gear on the node of main line, high-voltage switch gear switch state vector on generation main line node
Q, Q include k element；In Q, on off state closes a floodgate, and corresponding element value is 1；Conversely, being then 0；
（3）According to the connectedness of unidirectional figure, incidence matrix A and incidence matrix B are done into multiplying, obtain original the 1st grade and do
Circuit node and branch node are powered incidence matrix,；
（4）Incidence matrix is obtained according to incidence matrix A and L,；
（5）IfWithDiffer, then willNumerical value assign, repeat step（4）；IfWithIt is identical, hold
Row step（6）；
（6）N element often capable in each element and Matrix C in S is carried out obtaining matrix V with after computing, by each in Q
K element of each column carries out obtaining matrix U with after computing in element and matrix V.
According to the connectedness of unidirectional figure, the power supply of the branch node and branch node for directly being connected by inlet wire node is calculated
Incidence matrix, incidence matrixFor n rows n is arranged；When matrix operation is completed, matrix element and matrix element multiplication are transported
Calculation is defined as binary system and computing, and the add operation of matrix element and matrix element is defined as into binary system or computing；Specific meter
Calculate step as follows：
（1）According to the opening and closing state of high-voltage switch gear on inlet wire node, high-voltage switch gear switch state vector on generation inlet wire node
W, W include m element；In W, on off state closes a floodgate, and corresponding element value is 1；Conversely, being then 0；
（2）M element of each column in each element and matrix D in W is carried out and matrix N D is obtained after computing, will be every in W
M often capable element carries out and matrix N E is obtained after computing in individual element and matrix E；By in each element and matrix TE in W
M element of each column carries out and matrix N TE is obtained after computing；
（3）According to the connectedness of unidirectional figure, the branch road section for directly being connected by inlet wire node is calculated according to incidence matrix NE and NTE
Put the direct power supply incidence matrix with branch node；；
（4）Incidence matrixInRowThe element of row is usedRepresent, if theThe corresponding high pressure of individual branch node
It is "on" position to switch, then willNumerical value be revised as 1, otherwise willNumerical value be revised as 0；Wherein；
（5）According to incidence matrixCalculate incidence matrix,, perform step（6）;
（6）If matrixAnd matrixDifference, then by matrixValue assign matrix, repeat step
（5）；If matrixAnd matrixIt is identical, matrixCalculate and complete.
According to the connectedness of unidirectional figure, calculate branch node and branch node and power incidence matrixWith branch node with
Main line node is finally powered incidence matrix G, incidence matrixFor n rows n is arranged, in matrixIn certain branch node can be described
Which powered by branch node；Meanwhile, when matrix operation is completed, matrix element and matrix element multiplying are defined
It is binary system and computing, the add operation of matrix element and matrix element is defined as binary system or computing；Specific calculation procedure
It is as follows：
（1）Incidence matrix is obtained according to incidence matrix NE and ND,；I-th row jth row in representing matrix F
Element；If, represent branch nodeBy main line nodePower supply；If, represent branch nodeNot by doing
Circuit nodePower supply；
（2）Branch node and main line node are calculated according to incidence matrix F and A finally to power incidence matrix matrix G,；
（3）IfWithDiffer, then willNumerical value assign, repeat step（2）；IfWithIt is identical,
Then continue executing with step（4）；
（4）Powered incidence matrix according to incidence matrix G, U and TH calculating matrix branch node and branch node,；The element of the i-th row jth row in representing matrix H；
（5）Because using unidirectional graph structure, the power supply relation between branch node i and branch node i fails to obtain correct
Reflection, it is therefore desirable to incidence matrixIt is modified, obtains revised incidence matrix,Representing matrixIn the i-th row jth row element；If, then；If, and the corresponding height of branch node i
Off status is pressed off to close a floodgate, then；
（6）According to incidence matrixBranch node and branch node is calculated to power incidence matrix,, perform step（7）；
（7）IfWithDifference, then by matrixValue assign matrix, perform step（6）；IfWithIt is identical, then matrixCalculate and complete.
Powered incidence matrix according to branch node and branch nodeFinally powered pass with branch node and main line node
Connection matrix G obtains branch node set T of the instantaneous quick-break definite value less than fault current, comprises the following steps that：
（1）It is assumed that certain set line fault point is directly powered by branch node z, closed in power supply according to branch node z
Connection matrixIn corresponding line number find corresponding row, then find the corresponding row of all elements that numerical value in the row is 1
Number, then find corresponding branch node set Q1 according to all row numbers for obtaining；Q1 is the branch node influenceed by short trouble
Set, the fault current of all elements is the current short circuit current in set trouble point in branch node set Q1；
（2）For each branch node in branch node set Q1, it is corresponding in instantaneous quick-break value vector SD to find its
Quick-break definite value, then the fault current of each element in branch node set Q1 and the instantaneous quick-break set by the element are determined
Value is compared, if fault current is more than instantaneous quick-break definite value, the element is added in node set T, and set T is represented
The partial branch node tripped the need for acquisition and main line Node Switch set；
（3）According to branch node z, corresponding line number finds corresponding row in power supply incidence matrix G, in then finding the row
Numerical value is the 1 corresponding row number of all elements, then finds corresponding main line node set Q2 according to all row numbers for obtaining；Q2 is
The main line node set influenceed by short trouble, in main line node set Q2 the fault current of all elements be it is set therefore
The current short circuit current of barrier point；
（4）For each the main line node in main line node set Q2, it is corresponding in instantaneous quick-break value vector GSD to find its
Quick-break definite value, then the instantaneous quick-break set by the fault current and the element of each element in main line node set Q2 is determined
Value is compared, if fault current is more than instantaneous quick-break definite value, the element is added in node set T.
When T interior joint switch trips, in order to reflect site environment exactly, all subordinates powered by the switch
Switch also will all trip；Therefore need according to switch state vector S and Q, and node set T is obtained because short trouble needs
The switch set X1 and X2 of tripping operation, wherein, X1 be because short trouble need tripping operation all branch node switch sets, X2 be because
Short trouble needs all main line Node Switch set of tripping operation；Comprise the following steps that：
（1）For each branch node present in T, by it in branch node switch state vector S corresponding element value
It is set to 0；For each main line node present in T, by it in main line Node Switch state vector Q corresponding element value
It is set to 0；
（2）For mine high voltage supply system, according to the high-voltage switch gear state generation incidence matrix on switch state vector S and Q
A、B、D、E、TE;
（3）By incidence matrix A, B, D, E, TE and new main line Node Switch state vector Q and branch node switch state vector S
Recalculate incidence matrixWith；According to incidence matrixWith, calculate incidence matrix, matrix；
（4）Step is repeated for each branch node of colliery high voltage supply system i（5）And step（6）；
（5）Branch node i powers directly to circuit i, according to branch node i in incidence matrixIn corresponding line number find phase
The row answered, numerical value is the 1 corresponding row number of all elements in then finding the row, then finds it according to each row number for obtaining
Corresponding branch node set P1, P1 are all branch node set powered to circuit i；
（6）If not existing power branch node in set P1, branch node i is added in X1；X1 is because of short trouble
Need all branch node switch sets of tripping operation；
（7）Step is repeated for each main line of colliery high voltage supply system node j（8）And step（9）；
（8）According to main line node j in incidence matrixIn corresponding line number find corresponding row, then find numerical value in the row
It is the 1 corresponding row number of all elements, then finds its corresponding branch node set P2, P2 and be according to each row number for obtaining
All branch node set powered to main line node j；
（9）If not existing power branch node in set P2, main line node j is added in X2；X2 is because of short trouble
Need all main line Node Switch set of tripping operation.
According to switch state vector S and Q, switch set X1 and X2, all switches that tripping operation is needed because of short trouble are obtained
Set X, is separating brake by the status modifier of respective switch according to the set X of acquisition, performs trip operation；Comprise the following steps that：
（1）The corresponding branch node of all elements in set X1, if the numerical value of corresponding element is 1 in S, by this yuan in S
The numerical value of element is revised as 0；The corresponding main line node of all elements in set X2, if the numerical value of corresponding element is 1 in Q,
The numerical value of the element in Q is revised as 0；
（2）According to high-voltage switch gear state generation incidence matrix D and TE on switch state vector S and Q;
（3）Step is repeated for each inlet wire node e（4）；
（4）Corresponding row is found according to inlet wire node e corresponding line numbers in incidence matrix D, numerical value is 1 in then finding the row
The corresponding row number e1 of element；Corresponding row is found according to inlet wire node e corresponding line numbers in incidence matrix TE, is then found
Numerical value is the 1 corresponding row number e2 of element in the row；If row number e1 and e2 do not exist, inlet wire node e is added to collection
In conjunction X3；
（5）Set X1, X2, X3 are obtained into set X after merging；By the corresponding high-voltage switch gear status modifier of all nodes in set X
It is gate-dividing state；Finally, the switch trip result for being obtained according to emulation judges that in the case of this failure current quick-break sets and is
It is no to meet reliability and selectivity requirement, to reach the purpose that quick-break sets simulation speed-up.
Brief description of the drawings
Fig. 1 is the mine high voltage supply system figure before failure that is short-circuited；Fig. 2 is the mine after failure that is short-circuited high
Pressure electric power system figure.
Specific embodiment
With the branch node of filled black it is gate-dividing state in accompanying drawing 1 and accompanying drawing 2, unfilled branch node is combined floodgate shape
State；In the mine high voltage supply system of accompanying drawing 1 and accompanying drawing 2, power branch node is (1), (2), (3) and (4).
For the mine high voltage supply system of accompanying drawing 1, incidence matrix A, incidence matrix B, incidence matrix D are generated, associate square
Battle array E and incidence matrix TE；Comprise the following steps that：
（1）Generation incidence matrix A,；
（2）Generation incidence matrix B,；
（3）Generation incidence matrix D,；.
（4）Generation incidence matrix E,；
（5）Generation incidence matrix TE,。
Main line node and branch node are calculated according to incidence matrix A and B finally to power incidence matrix, specific calculation procedure
It is as follows：
（1）According to the opening and closing state of high-voltage switch gear on branch node, high-voltage switch gear switch state vector on generation branch node
S, S include n element；In S, on off state closes a floodgate, and corresponding element value is 1；Conversely, being then 0；
；
（2）According to the opening and closing state of high-voltage switch gear on the node of main line, high-voltage switch gear switch state vector on generation main line node
Q, Q include k element；In Q, on off state closes a floodgate, and corresponding element value is 1；Conversely, being then 0；；
（3）According to the connectedness of unidirectional figure, incidence matrix A and incidence matrix B are done into multiplying, obtain original the 1st grade and do
Circuit node and branch node are powered incidence matrix,；
;
（4）Incidence matrix is obtained according to incidence matrix A and L,；
（5）IfWithDiffer, then willNumerical value assign, repeat step（4）；IfWithIt is identical, hold
Row step（6）；
（6）N element often capable in each element and Matrix C in S is carried out obtaining matrix V with after computing, by each in Q
K element of each column carries out obtaining matrix U with after computing in element and matrix V;
。
According to the connectedness of unidirectional figure, the power supply of the branch node and branch node for directly being connected by inlet wire node is calculated
Incidence matrix, specific calculation procedure is as follows：
（1）According to the opening and closing state of high-voltage switch gear on inlet wire node, high-voltage switch gear switch state vector on generation inlet wire node
W,；W includes m element；In W, on off state closes a floodgate, and corresponding element value is 1；Instead
It, then be 0；
（2）M element of each column in each element and matrix D in W is carried out and matrix N D is obtained after computing, will be every in W
M often capable element carries out and matrix N E is obtained after computing in individual element and matrix E；By in each element and matrix TE in W
M element of each column carries out and matrix N TE is obtained after computing；
（3）According to the connectedness of unidirectional figure, incidence matrix is calculated,
。
According to the connectedness of unidirectional figure, calculate branch node and branch node and power incidence matrixWith branch node with
Main line node is finally powered incidence matrix G, and specific calculation procedure is as follows：
（1）Incidence matrix is obtained according to incidence matrix NE and ND,；I-th row jth row in representing matrix F
Element；If, represent branch nodeBy main line nodePower supply；If, represent branch nodeNot by doing
Circuit nodePower supply；；
（2）Branch node and main line node are calculated according to incidence matrix F and A finally to power incidence matrix matrix G,；；
（3）IfWithDiffer, then willNumerical value assign, repeat step（2）；IfWithIt is identical,
Then continue executing with step（4）；
（4）Calculate incidence matrix,。
Powered incidence matrix according to branch node and branch nodeFinally powered pass with branch node and main line node
Connection matrix G obtains branch node set T of the instantaneous quick-break definite value less than fault current, comprises the following steps that：
（1）It is assumed that certain set line fault point is directly powered by branch node z, closed in power supply according to branch node z
Connection matrixIn corresponding line number find corresponding row, then find the corresponding row of all elements that numerical value in the row is 1
Number, then find corresponding branch node set Q1 according to all row numbers for obtaining；Q1 is the branch node influenceed by short trouble
Set, the fault current of all elements is the current short circuit current in set trouble point in branch node set Q1；Attached
In mining high-voltage electric-network shown in Fig. 1, if the line fault point for setting directly is powered by branch node 21, Q1=1,
5,21 }；If the corresponding short circuit current of short trouble that the line end of branch node 21 occurs is I, branch road section in Q1 sequences
1,5 and 21 corresponding fault current of point is I；
（2）For each branch node in branch node set Q1, it is corresponding in instantaneous quick-break value vector SD to find its
Quick-break definite value, then the fault current of each element in branch node set Q1 and the instantaneous quick-break set by the element are determined
Value is compared, if fault current is more than instantaneous quick-break definite value, the element is added in node set T, and set T is represented
The partial branch node tripped the need for acquisition and main line Node Switch set；It is assumed that branch node 5 and branch node 21 it is right
The high-voltage switch gear fault current answered is all higher than the instantaneous quick-break definite value of its setting, then T={ 5,21 }.
（3）According to branch node z, corresponding line number finds corresponding row in power supply incidence matrix G, then finds this
Numerical value is the 1 corresponding row number of all elements in row, then finds corresponding main line node set Q2 according to all row numbers for obtaining；
Q2 is the main line node set influenceed by short trouble, and the fault current of all elements is set in main line node set Q2
Put the current short circuit current in trouble point；In the mining high-voltage electric-network shown in accompanying drawing 1, Q2=<1>,<3>, then done in Q2 sequences
Circuit node<1>With<3>Corresponding fault current is I；
（4）For each the main line node in main line node set Q2, it is corresponding in instantaneous quick-break value vector GSD to find its
Quick-break definite value, then the instantaneous quick-break set by the fault current and the element of each element in main line node set Q2 is determined
Value is compared, if fault current is more than instantaneous quick-break definite value, the element is added in node set T；It is assumed that branch road
Node 5, main line node<1>With main line node<3>Corresponding high-voltage switch gear fault current is all higher than the instantaneous quick-break of its setting
Definite value, then T=<1>,<3>, 5,21 }.
When T interior joint switch trips, in order to reflect site environment exactly, all subordinates powered by the switch
Switch also will all trip；Therefore need according to switch state vector S and Q, and node set T is obtained because short trouble needs
The switch set X1 and X2 of tripping operation；Comprise the following steps that：
（1）For each branch node present in T, by it in branch node switch state vector S corresponding element value
It is set to 0；Then;
（2）For each main line node present in T, by it in main line Node Switch state vector Q corresponding element value
0 is set to, then；
（3）For colliery high voltage supply system, according to the high-voltage switch gear state generation incidence matrix on switch state vector S and Q
A、B、D、E、TE；
（4）By incidence matrix A, B, D, E, TE and new main line Node Switch state vector Q and branch node switch state vector S
Recalculate incidence matrixWith；According to incidence matrixWith, calculate incidence matrix, matrix；Then,,；
（5）The branch node switch set X1 for needing tripping operation is calculated, then X1={ 5,9,10,11,15,16,17,21,22,23 }；
（6）Calculate need tripping operation main line Node Switch set X2, then X2=<1>,<3>}.
According to switch state vector S and Q, switch set X1 and X2, all switches that tripping operation is needed because of short trouble are obtained
Set X, is separating brake by the status modifier of respective switch according to the set X of acquisition, performs trip operation, is comprised the following steps that：
（1）The corresponding branch node of all elements in set X1, if the numerical value of corresponding element is 1 in S, by this yuan in S
The numerical value of element is revised as 0；The corresponding main line node of all elements in set X2, if the numerical value of corresponding element is 1 in Q,
The numerical value of the element in Q is then revised as 0；It can thus be concluded that：
,；
（2）According to high-voltage switch gear state generation incidence matrix A, B, D, E, TE on switch state vector S and Q；
（3）By incidence matrix A, B, D, E, TE and new main line Node Switch state vector Q and branch node switch state vector S
Recalculate incidence matrixWith；Then,
；
（4）Step is repeated for each inlet wire node e（5）；
（5）Corresponding row is found according to inlet wire node e corresponding line numbers in incidence matrix D, numerical value is 1 in then finding the row
The corresponding row number e1 of element；Corresponding row is found according to inlet wire node e corresponding line numbers in incidence matrix TE, is then found
Numerical value is the 1 corresponding row number e2 of element in the row；If row number e1 and e2 do not exist, inlet wire node e is added to collection
In conjunction X3；In the mining high-voltage electric-network shown in accompanying drawing 1, X3={ Z3, Z5, Z7 }；
（6）Set X1, X2, X3 are obtained into set X after merging；By the corresponding high-voltage switch gear status modifier of all nodes in set X
It is gate-dividing state, the mining high-voltage electric-network after tripping operation is as shown in Figure 2；Finally, the switch trip result for being obtained according to emulation is sentenced
Break in the case of this failure, whether current quick-break sets meet reliability and selectivity requirement, and emulation is set to reach quick-break
The purpose of inspection.
Claims (6)
1. a kind of mixed structure mining high-voltage electric-network quick-break sets emulation inspection method, it is characterised in that described quick-break sets
Emulation inspection method is put to comprise the following steps：
Step 11, saves according to the annexation generation main line node between electrical equipment in mine high voltage supply system figure with main line
The incidence matrix B of the incidence matrix A of point, main line node and branch node, inlet wire node and the incidence matrix D of main line node, prop up
The incidence matrix TE of the incidence matrix E of circuit node and inlet wire node, inlet wire node and branch node；
Step 12, calculates main line node and branch node and finally powers incidence matrix according to incidence matrix A and B；
Step 13, according to the connectedness of unidirectional figure, calculates the branch node and branch node for directly being connected by inlet wire node
Power supply incidence matrix, incidence matrixFor n rows n is arranged；
Step 14, according to the connectedness of unidirectional figure, calculates branch node and branch node and powers incidence matrixWith branch road section
Point is finally powered incidence matrix G with main line node；
Step 15, powers incidence matrix according to branch node and branch nodeFinally supplied with main line node with branch node
Electric incidence matrix G obtains branch node set T of the instantaneous quick-break definite value less than fault current；
Step 16, when T interior joint switch trips, in order to reflect site environment exactly, by owning that the switch is powered
Subordinate's switch also will all trip；Therefore need according to switch state vector S and Q, and node set T is obtained because of short trouble
Need the switch set X1 and X2 of tripping operation；
Step 17, according to switch state vector S and Q, switch set X1 and X2, obtains because short trouble needs all of tripping operation to open
Set X is closed, is separating brake by the status modifier of respective switch according to the set X of acquisition, perform trip operation；
In step 16, following steps are substantially carried out：
Step 161, for each branch node present in T, by it in branch node switch state vector S corresponding unit
Plain value is set to 0；For each main line node present in T, by it in main line Node Switch state vector Q corresponding unit
Plain value is set to 0；
Step 162, for mine high voltage supply system, associates according to switch state vector S with the high-voltage switch gear state generation on Q
Matrix A, B, D, E, TE;
Step 163, by incidence matrix A, B, D, E, TE and new main line Node Switch state vector Q and branch node on off state
Vector S recalculates incidence matrixWith；According to incidence matrixWith, calculate incidence matrix, matrix；
Step 164, step 165 and step 166 are repeated for each branch node of colliery high voltage supply system i；
Step 165, branch node i powers directly to circuit i, according to branch node i in incidence matrixIn corresponding line number
Corresponding row is found, the corresponding row number of all elements that numerical value in the row is 1 is then found, then according to each row number for obtaining
It is all branch node set powered to circuit i to find its corresponding branch node set P1, P1；
Step 166, if not existing power branch node in set P1, branch node i is added in X1；X1 is because of short circuit
Failure needs all branch node switch sets of tripping operation；
Step 167, step 168 and step 169 are repeated for each main line of colliery high voltage supply system node j；
Step 168, according to main line node j in incidence matrixIn corresponding line number find corresponding row, then find the row
Middle numerical value is the 1 corresponding row number of all elements, then finds its corresponding branch node set according to each row number for obtaining
P2, P2 are all branch node set powered to main line node j；
Step 169, if not existing power branch node in set P2, main line node j is added in X2；X2 is because of short circuit
Failure needs all main line Node Switch set of tripping operation.
2. a kind of mixed structure mining high-voltage electric-network quick-break according to claim 1 sets emulation inspection method, its feature
It is in step 12, to be substantially carried out following steps：
Step 21, according to the opening and closing state of outlet switch on branch node, high-voltage switch gear on off state on generation branch node
Vector S, S includes n element；In S, on off state closes a floodgate, and corresponding element value is 1；Conversely, being then 0；
Step 22, according to the opening and closing state of high-voltage switch gear on the node of main line, high-voltage switch gear on off state on generation main line node
Vector Q, Q include k element；In Q, on off state closes a floodgate, and corresponding element value is 1；Conversely, being then 0；
Step 23, according to the connectedness of unidirectional figure, multiplying is done by incidence matrix A and incidence matrix B, obtains original the 1st
Level main line node and branch node are powered incidence matrix,；
Step 24, incidence matrix is obtained according to incidence matrix A and L,；
Step 25, ifWithDiffer, then willNumerical value assign, repeat step 24；IfWithIt is identical,
Perform step 26；
Step 26, n element often capable in each element and Matrix C in S is carried out obtaining matrix V with after computing, by Q
K element of each column carries out obtaining matrix U with after computing in each element and matrix V.
3. a kind of mixed structure mining high-voltage electric-network quick-break according to claim 1 sets emulation inspection method, its feature
It is in step 13, to be substantially carried out following steps：
Step 31, according to the opening and closing state of high-voltage switch gear on inlet wire node, high-voltage switch gear on off state on generation inlet wire node
Vector W, W include m element；In W, on off state closes a floodgate, and corresponding element value is 1；Conversely, being then 0；
Step 32, m element of each column in each element and matrix D in W is carried out and matrix N D is obtained after computing, by W
Each element and matrix E in often capable m element carry out and matrix N E obtained after computing；By each element and matrix in W
M element of each column carries out and matrix N TE is obtained after computing in TE；
Step 33, according to the connectedness of unidirectional figure, the branch for directly being connected by inlet wire node is calculated according to incidence matrix NE and NTE
The direct power supply incidence matrix of circuit node and branch node；；
Step 34, incidence matrixInRowThe element of row is usedRepresent, if theIndividual branch node is corresponding
High-voltage switch gear is "on" position, then willNumerical value be revised as 1, otherwise willNumerical value be revised as 0；Wherein；
Step 35, according to incidence matrixCalculate incidence matrix,, perform step 36；
Step 36, if matrixAnd matrixDifference, then by matrixValue assign matrix, repeat step
Rapid 35；If matrixAnd matrixIt is identical, matrixCalculate and complete.
4. a kind of mixed structure mining high-voltage electric-network quick-break according to claim 1 sets emulation inspection method, its feature
It is at step 14, to be substantially carried out following steps：
Step 41, incidence matrix is obtained according to incidence matrix NE and ND,；I-th row in representing matrix F
The element of j row；If, represent branch nodeBy main line nodePower supply；If, represent branch nodeNo
By main line nodePower supply；
Step 42, calculates branch node and main line node and finally powers incidence matrix matrix G according to incidence matrix F and A,；
Step 43, ifWithDiffer, then willNumerical value assign, repeat step 42；IfWithPhase
Together, then step 44 is continued executing with；
Step 44, powers incidence matrix according to incidence matrix G, U and TH calculating matrix branch node and branch node,；The element of the i-th row jth row in representing matrix H；
Step 45, because using unidirectional graph structure, the power supply relation between branch node i and branch node i fails to obtain
Correct reflection, it is therefore desirable to incidence matrixIt is modified, obtains revised incidence matrix,Represent square
Battle arrayIn the i-th row jth row element；If, then；If, and branch node i is corresponding
High-voltage switch gear state is combined floodgate, then；
Step 46, according to incidence matrixBranch node and branch node is calculated to power incidence matrix,, perform step 47；
Step 47, ifWithDifference, then by matrixValue assign matrix, perform step 46；IfWithIt is identical, then matrixCalculate and complete.
5. a kind of mixed structure mining high-voltage electric-network quick-break according to claim 1 sets emulation inspection method, its feature
It is in step 15, to be substantially carried out following steps：
Step 51, it is assumed that certain set line fault point is directly powered by branch node z, is supplying according to branch node z
Electric incidence matrixIn corresponding line number find corresponding row, then find all elements correspondence that numerical value in the row is 1
Row number, then according to obtain all row numbers find corresponding branch node set Q1；Q1 is the branch road influenceed by short trouble
Node set, the fault current of all elements is the current short circuit current in set trouble point in branch node set Q1；
Step 52, for each branch node in branch node set Q1, it is found in instantaneous quick-break value vector SD
Corresponding quick-break definite value, then by the instantaneous speed set by the fault current of each element in branch node set Q1 and the element
Conclude that value is compared, if fault current is more than instantaneous quick-break definite value, the element is added in node set T, set T
Represent the partial branch node and main line Node Switch set tripped the need for obtaining；
Step 53, according to branch node z, corresponding line number finds corresponding row in power supply incidence matrix G, then finds this
Numerical value is the 1 corresponding row number of all elements in row, then finds corresponding main line node set Q2 according to all row numbers for obtaining；
Q2 is the main line node set influenceed by short trouble, and the fault current of all elements is set in main line node set Q2
Put the current short circuit current in trouble point；
Step 54, for each the main line node in main line node set Q2, it is found in instantaneous quick-break value vector GSD
Corresponding quick-break definite value, then by the instantaneous speed set by the fault current and the element of each element in main line node set Q2
Conclude that value is compared, if fault current is more than instantaneous quick-break definite value, the element is added in node set T.
6. a kind of mixed structure mining high-voltage electric-network quick-break according to claim 1 sets emulation inspection method, its feature
It is in step 17, to be substantially carried out following steps：
Step 61, the corresponding branch node of all elements in set X1, if the numerical value of corresponding element is 1 in S, by S
The numerical value of the element is revised as 0；The corresponding main line node of all elements in set X2, if the numerical value of corresponding element is in Q
1, then the numerical value of the element in Q is revised as 0；
Step 62, according to high-voltage switch gear state generation incidence matrix D and TE on switch state vector S and Q;
Step 63, step 64 is repeated for each inlet wire node e；
Step 64, corresponding row is found according to inlet wire node e corresponding line numbers in incidence matrix D, then finds number in the row
It is worth the corresponding row number e1 of element for 1；Corresponding row is found according to inlet wire node e corresponding line numbers in incidence matrix TE, so
The corresponding row number e2 of element that numerical value in the row is 1 is found afterwards；If row number e1 and e2 do not exist, inlet wire node e is added
Enter in set X3；
Step 65, by set X1, X2, X3 obtains set X after merging；By the corresponding high-voltage switch gear state of all nodes in set X
It is revised as gate-dividing state；Finally, the switch trip result for being obtained according to emulation judges that in the case of this failure current quick-break sets
Put and whether meet reliability and selectivity requirement, to reach the purpose that quick-break sets simulation speed-up.
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