CN107844841B - Simple power distribution network fault positioning method based on fault indicator multi-information fusion - Google Patents
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Abstract
The invention discloses a simple power distribution network fault positioning method based on fault indicator multi-information fusion, which comprises the following steps: establishing current mutation information logic arrayATILAnd recording the feeder line current mutation information collected by the fault indicator by the array; establishing electric field mutation information logic arrayETILRecording the feeder line electric field mutation information collected by the fault indicator by the array; establishing a logic array of the card-turning change informationFTILRecording the card turning change information collected by the fault indicator by the array; establishing fault indicator fusion information arrayCTIL，Recording the current, electric field and comprehensive information of the turning card collected by the fault indicator by the array; fusing information arrays according to fault indicatorsCTILAnd carrying out active fault study and judgment on the fault condition of each feeder line of the simple power distribution network, and determining a fault interval. The research and judgment method can better realize the fault research and judgment and positioning of the simple power distribution network and has better practical value.
Description
Technical Field
The invention relates to the field of simple power distribution network fault positioning, in particular to a simple power distribution network fault positioning method based on fault indicator multi-information fusion.
Background
With the gradual progress of intelligent power distribution network construction, the operation safety of the power distribution network is ensured, the fault power failure time is shortened, and the improvement of the power supply reliability is widely concerned.
The simple power distribution network is suitable for underdeveloped economic areas and urban and rural areas and aims at improving power supply reliability and achieving the purpose that a power grid can be viewed, is low in investment and quick in effect, and is very suitable for areas with low power distribution network foundation investment and high power supply reliability requirements in current parts of areas.
The fault indicator is used as important terminal equipment for feeder automation, and is widely applied to the current simple power distribution network by the characteristics of small volume, low price, no need of power failure in live installation, good adaptability to short circuit and ground fault and the like.
At present, the power distribution network fault judgment method based on fault indicators mainly comprises three types: unified matrix method, probability estimation method, artificial intelligence method. In practical application, because site environment is changeable, for example, temperature, humidity change are big, and sand and dust are many, maintain untimely etc. and all can lead to the collection system degree of accuracy impaired, and simple and easy distribution network is mostly overhead line, and fault indicator can gather electric current information, electric field information and turn over the tablet information, but because operational environment's reason and equipment quality problem, these three information are not necessarily accurate, so the synthesis of this three kinds of information of application carries out fault location and has important practical meaning.
Disclosure of Invention
The invention aims to solve the problem of simple power distribution network fault location, combines the characteristics of a simple power distribution network, and provides a simple power distribution network fault location method based on fault indicator multi-information fusion.
The technical scheme for realizing the purpose is as follows:
a simple power distribution network fault positioning method based on fault indicator multi-information fusion comprises the following steps:
(1) establishing current mutation information logic arrayATILAnd recording the feeder line current mutation information collected by the fault indicator by the array;
(2) establishing electric field mutation information logic arrayETILRecording the feeder line electric field mutation information collected by the fault indicator by the array;
(3) establishing a logic array of the card-turning change informationFTILRecording the card turning change information collected by the fault indicator by the array;
(4) establishing fault indicator fusion information arrayCTIL，Recording the current, electric field and comprehensive information of the turning card collected by the fault indicator by the array;
(5) fusing information arrays according to fault indicatorsCTILAnd carrying out active fault study and judgment on the fault condition of each feeder line of the simple power distribution network, and determining a fault interval.
Establishing current mutation information logic arrayATILAnd record the feeder line current mutation information that the fault indicator gathered with this battle array, specifically:
wherein each row represents a feeder line,nfor the total number of feeders contained in the simple distribution network,mthe number of fault indicators contained in the feeder line with the largest number of fault indicators contained in the simple distribution network is increased;AL ij is as followsiThe first of the strip feederjThe feeder line current mutation logic value collected by each fault indicator is 1 to indicate that the current has mutation, 0 to indicate that the current has not mutation,i=1,2,3,…,n;j=1,2,3,…,m(ii) a If it isiThe first of the strip feederjIf a fault indicator is not present, thenAL ij Is a value of-1.
Establishing electric field mutation information logic arrayETILAnd recording the feeder line electric field sudden change information collected by the fault indicator by the arrayThe method specifically comprises the following steps:
wherein each row represents a feeder line,nfor the total number of feeders contained in the simple distribution network,mthe number of fault indicators contained in the feeder line with the largest number of fault indicators contained in the simple distribution network is increased;EL ij is as followsiThe first of the strip feederjThe feeder line electric field mutation logic value collected by each fault indicator is that 1 represents that the electric field is mutated, 0 represents that the electric field is not mutated,i=1,2,3,…,n;j=1,2,3,…,m(ii) a If it isiThe first of the strip feederjIf a fault indicator is not present, thenEL ij Is a value of-1.
Establishing a logic array of the card-turning change informationFTILAnd the array is used for recording the card turning change information collected by the fault indicator, and the method specifically comprises the following steps:
wherein each row represents a feeder line,nfor the total number of feeders contained in the simple distribution network,mthe number of fault indicators contained in the feeder line with the largest number of fault indicators contained in the simple distribution network is increased;FL ij is as followsiThe first of the strip feederjThe card-turning information collected by each fault indicator changes, wherein 1 represents that the card-turning occurs, 0 represents that the card-turning does not occur,i=1,2,3,…,n;j=1,2,3,…,m(ii) a If it isiThe first of the strip feederjIf a fault indicator is not present, thenFL ij Is a value of-1.
Establishing fault indicator fusion information arrayCTIL，And the array is used for recording the current, the electric field and the comprehensive information of the turning card collected by the fault indicator, and the method specifically comprises the following steps:
wherein each row represents a feeder line,nfor the total number of feeders contained in the simple distribution network,mthe number of fault indicators contained in the feeder line with the largest number of fault indicators contained in the simple distribution network is increased;CL ij is as followsiThe first of the strip feederjThe fault information collected by each fault indicator is fused with the value,i=1,2,3,…,n;j=1,2,3,…,m(ii) a If it isiThe first of the strip feederjIf a fault indicator is not present, thenCL ij Is a value of-1.
Fusing information arrays according to fault indicatorsCTILThe method comprises the following steps of carrying out active fault study and judgment on fault conditions of all feeders of the simple power distribution network, and determining a fault interval, specifically:
step 1, obtaining current mutation information logic arrayCTILIf the row data are all 0 and-1, it indicates that the feeder line represented by the row has no fault, and if the row data contain 1 and 2, the step 2 is entered;
step 2, if a certain row of data contains 1 and 2, sorting all fault indicators represented by elements 1 and 2 according to the sequence of current flow direction, and then enabling a fault to occur in a downstream area of the last fault indicator;
step 3, repeating the step 1 to the step 2 until the fault indicator fuses the information arrayCTILAll rows of (a) are analyzed to completion.
The invention has the beneficial technical effects that: establishing current mutation information logic arrayATILAnd recording the feeder line current mutation information collected by the fault indicator by the array; establishing electric field mutation information logic arrayETILRecording the feeder line electric field mutation information collected by the fault indicator by the array; establishing a logic array of the card-turning change informationFTILRecording the card turning change information collected by the fault indicator by the array; establishing fault indicator fusion information arrayCTIL，Recording the current, electric field and comprehensive information of the turning card collected by the fault indicator by the array; fusing information arrays according to fault indicatorsCTILAnd carrying out active fault study and judgment on the fault condition of each feeder line of the simple power distribution network, and determining a fault interval. The research and judgment method can better realize simple power distributionThe fault of the network is researched, judged and positioned, and the method has good practical value.
Drawings
Figure 1 is a diagram of a typical power distribution network.
Detailed Description
The present invention is explained in detail below:
(1) establishing current mutation information logic arrayATILAnd recording the feeder line current mutation information collected by the fault indicator by the array;
(2) establishing electric field mutation information logic arrayETILRecording the feeder line electric field mutation information collected by the fault indicator by the array;
(3) establishing a logic array of the card-turning change informationFTILRecording the card turning change information collected by the fault indicator by the array;
(4) establishing fault indicator fusion information arrayCTIL，Recording the current, electric field and comprehensive information of the turning card collected by the fault indicator by the array;
(5) fusing information arrays according to fault indicatorsCTILAnd carrying out active fault study and judgment on the fault condition of each feeder line of the simple power distribution network, and determining a fault interval.
Establishing current mutation information logic arrayATILAnd record the feeder line current mutation information that the fault indicator gathered with this battle array, specifically:
wherein each row represents a feeder line,nfor the total number of feeders contained in the simple distribution network,mthe number of fault indicators contained in the feeder line with the largest number of fault indicators contained in the simple distribution network is increased;AL ij is as followsiThe first of the strip feederjThe feeder line current mutation logic value collected by each fault indicator is 1 to indicate that the current has mutation, 0 to indicate that the current has not mutation,i=1,2,3,…,n;j=1,2,3,…,m(ii) a If it isiThe first of the strip feederjIf a fault indicator is not present, thenAL ij To take a valueIs-1.
Establishing electric field mutation information logic arrayETILAnd record the feeder electric field sudden change information that the fault indicator gathered with this battle array, specifically:
wherein each row represents a feeder line,nfor the total number of feeders contained in the simple distribution network,mthe number of fault indicators contained in the feeder line with the largest number of fault indicators contained in the simple distribution network is increased;EL ij is as followsiThe first of the strip feederjThe feeder line electric field mutation logic value collected by each fault indicator is that 1 represents that the electric field is mutated, 0 represents that the electric field is not mutated,i=1,2,3,…,n;j=1,2,3,…,m(ii) a If it isiThe first of the strip feederjIf a fault indicator is not present, thenEL ij Is a value of-1.
Establishing a logic array of the card-turning change informationFTILAnd the array is used for recording the card turning change information collected by the fault indicator, and the method specifically comprises the following steps:
wherein each row represents a feeder line,nfor the total number of feeders contained in the simple distribution network,mthe number of fault indicators contained in the feeder line with the largest number of fault indicators contained in the simple distribution network is increased;FL ij is as followsiThe first of the strip feederjThe card-turning information collected by each fault indicator changes, wherein 1 represents that the card-turning occurs, 0 represents that the card-turning does not occur,i=1,2,3,…,n;j=1,2,3,…,m(ii) a If it isiThe first of the strip feederjIf a fault indicator is not present, thenFL ij Is a value of-1.
Establishing fault indicator fusion information arrayCTIL，And the array is used for recording the current, the electric field and the comprehensive information of the turning card collected by the fault indicator, and the method specifically comprises the following steps:
wherein each row represents a feeder line,nfor the total number of feeders contained in the simple distribution network,mthe number of fault indicators contained in the feeder line with the largest number of fault indicators contained in the simple distribution network is increased;CL ij is as followsiThe first of the strip feederjThe fault information collected by each fault indicator is fused with the value,i=1,2,3,…,n;j=1,2,3,…,m(ii) a If it isiThe first of the strip feederjIf a fault indicator is not present, thenCL ij Is a value of-1.
Fusing information arrays according to fault indicatorsCTILThe method comprises the following steps of carrying out active fault study and judgment on fault conditions of all feeders of the simple power distribution network, and determining a fault interval, specifically:
step 1, obtaining current mutation information logic arrayCTILIf the row data are all 0 and-1, it indicates that the feeder line represented by the row has no fault, and if the row data contain 1 and 2, the step 2 is entered;
step 2, if a certain row of data contains 1 and 2, sorting all fault indicators represented by elements 1 and 2 according to the sequence of current flow direction, and then enabling a fault to occur in a downstream area of the last fault indicator;
step 3, repeating the step 1 to the step 2 until the fault indicator fuses the information arrayCTILAll rows of (a) are analyzed to completion.
In the present invention, n and m are natural numbers.
The specific implementation is shown in fig. 1, where a to L are Fault indicator terminals having a current collection function, M, N are feeder terminals having a tie switch remote signaling and telemetry collection function, S1, S2, and S3 are substation outgoing switch collection terminals, and assuming that faults occur at two places, Fault1 and Fault2, the Fault location process is analyzed as follows:
current mutation information logic array for transmitting power distribution automation main station system on each fault indicator acquisition terminal at a certain timeATILThe following were used:
electric field sudden change information logic array collected by fault indicatorETILThe following were used:
logic array of turn-over change information collected by fault indicatorFTILThe following were used:
determining fault indicator fusion information arraysCTILComprises the following steps:
the fault indicator with row 1 logic values 1 and 2 is A, B, C, D, sorted by current direction as ABCD, so the fault occurs downstream of fault indicator D.
The fault indicator of row 2 logic values 1 and 2 is H, I, J, sorted by current direction is JIH, and the fault occurs in the downstream area of fault indicator H.
The logic values in row 3 are all 0 and-1, so the feeder has no fault.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-only memory (ROM), a Random Access Memory (RAM), or the like.
The research and judgment method can better realize the fault research and judgment and positioning of the simple power distribution network, and the field test of the company proves that the effect is better and the practical value is better.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (4)
1. A simple power distribution network fault positioning method based on fault indicator multi-information fusion is characterized in that: the method comprises the following steps:
(1) establishing a current mutation information logic array ATIL, and recording the feeder line current mutation information acquired by the fault indicator by the array;
(2) establishing an electric field mutation information logic array ETIL, and recording the electric field mutation information of the feeder line, which is acquired by a fault indicator, by the array;
(3) establishing a tile turning change information logic array FTIL, and recording the tile turning change information acquired by a fault indicator by the array;
(4) establishing a fault indicator fusion information array CTIL, and recording the current, electric field and card-turning comprehensive information collected by the fault indicator by the array, wherein the method specifically comprises the following steps:
each row represents a feeder line, n is the total number of feeder lines included in the simple distribution network, and m is the number of fault indicators included in the feeder line with the largest number of fault indicators included in the simple distribution network; CLijAcquiring a fault information fusion value for the jth fault indicator of the ith feeder line, wherein i is 1,2,3, …, n; j ═ 1,2,3, …, m; CL if the jth fault indicator of the i feeders does not existijIs a value of-1; ALijThe feeder current mutation logic value collected for the jth fault indicator of the ith feeder is 1, i is 1,2,3, …, n, wherein 1 represents that the current mutation occurs, 0 represents that the current does not occur; j ═ 1,2,3, …, m; if the jth fault indicator of the i feeder lines does not exist, ALijIs a value of-1; el (electro luminescence)ijThe feeder line electric field mutation logic value collected by the jth fault indicator of the ith feeder line is 1, which represents that the electric field is mutated, 0 represents that the electric field is not mutated, and i is 1,2,3, …, n; j ═ 1,2,3, …, m; if the jth fault indicator of the i feeder lines does not exist, ELijIs a value of-1; FLijThe card flipping information collected by the jth fault indicator of the ith feeder line changes, wherein 1 represents that card flipping occurs, 0 represents that card flipping does not occur, and i is 1,2,3, …, n; j ═ 1,2,3, …, m; if the jth fault indicator of the i feeder lines does not exist, the FLijIs a value of-1;
(5) according to the fault indicator fusion information array CTIL, active fault study and judgment are carried out on the fault conditions of all the feeders of the simple power distribution network, and a fault interval is determined, and the method specifically comprises the following steps:
step 1, taking 1 line of a current mutation information logic array CTIL, if the line data are all 0 and-1, indicating that a feeder line represented by the line has no fault, and if the line data contain 1 and 2, entering step 2;
step 2, if a certain row of data contains 1 and 2, sorting all fault indicators represented by elements 1 and 2 according to the sequence of current flow direction, and then enabling a fault to occur in a downstream area of the last fault indicator;
and step 3, repeating the steps 1 to 2 until all the lines of the CTIL are analyzed.
2. The simple power distribution network fault location method based on fault indicator multi-information fusion as claimed in claim 1, characterized in that:
establishing a current mutation information logic array ATIL, and recording the feeder line current mutation information acquired by the fault indicator by the array, wherein the method specifically comprises the following steps:
each row represents a feeder line, n is the total number of feeder lines included in the simple distribution network, and m is the number of fault indicators included in the feeder line with the largest number of fault indicators included in the simple distribution network; ALijThe feeder current mutation logic value collected for the jth fault indicator of the ith feeder is 1, i is 1,2,3, …, n, wherein 1 represents that the current mutation occurs, 0 represents that the current does not occur; j ═ 1,2,3, …, m; if the jth fault indicator of the i feeder lines does not exist, ALijIs a value of-1.
3. The simple power distribution network fault location method based on fault indicator multi-information fusion as claimed in claim 1, characterized in that:
establishing an electric field mutation information logic array ETIL, and recording the electric field mutation information of the feeder line collected by the fault indicator by using the array, wherein the method specifically comprises the following steps:
each row represents a feeder line, n is the total number of feeder lines included in the simple distribution network, and m is the number of fault indicators included in the feeder line with the largest number of fault indicators included in the simple distribution network; el (electro luminescence)ijThe feeder line electric field mutation logic value collected by the jth fault indicator of the ith feeder line is 1, which represents that the electric field is mutated, 0 represents that the electric field is not mutated, and i is 1,2,3, …, n; j ═ 1,2,3, …, m; if the jth fault indicator of the i feeder lines does not exist, ELijIs a value of-1.
4. The simple power distribution network fault location method based on fault indicator multi-information fusion as claimed in claim 1, characterized in that:
establishing a card-turning change information logic array FTIL, and recording card-turning change information collected by a fault indicator by using the array, wherein the method specifically comprises the following steps:
each row represents a feeder line, n is the total number of feeder lines included in the simple distribution network, and m is the number of fault indicators included in the feeder line with the largest number of fault indicators included in the simple distribution network; FLijThe card flipping information collected by the jth fault indicator of the ith feeder line changes, wherein 1 represents that card flipping occurs, 0 represents that card flipping does not occur, and i is 1,2,3, …, n; j ═ 1,2,3, …, m; if the jth fault indicator of the i feeder lines does not exist, the FLijIs a value of-1.
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