CN108594076A - A kind of power distribution network power-off fault analysis method - Google Patents
A kind of power distribution network power-off fault analysis method Download PDFInfo
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- CN108594076A CN108594076A CN201810402432.3A CN201810402432A CN108594076A CN 108594076 A CN108594076 A CN 108594076A CN 201810402432 A CN201810402432 A CN 201810402432A CN 108594076 A CN108594076 A CN 108594076A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The invention discloses a kind of power distribution network power-off fault analysis methods, including：Screening power failure decompression user and the distribution net topology for obtaining the power failure decompression user；For power failure, decompression user establishes ant colony, and overall path matrix is established according to distribution net topology；Ant colony distribution is judged to determine the subpath matrix of ant colony search, in this, as sub-information prime matrix；Fault search is carried out using ant group algorithm, route searching, and the element numerical value of synchronized update sub-information prime matrix are carried out to all ants in ant colony；End condition it has been judged as with all ants, element maximum value is power-off fault point in sub-information prime matrix.The present invention improves speed and the accuracy of fault location, shortens the response time, reduce cost, improve customer satisfaction and system performance measure the case where not increasing hardware input cost.
Description
Technical field
The present invention relates to a kind of power distribution network power-off fault analysis methods, belong to distribution network technology field.
Background technology
Since intelligent grid in 2009 proposes, China has pushed forward the construction of intelligent distribution network, the automation of power grid comprehensively
Level is promoted successively, while user improves higher requirement, mesolow electricity to electric service reliability and power supply quality
The fault location on road also becomes the hot spot of research concern.
For a long time, it for the repair call of Low-side faults information electric company Main Basiss resident, is managed using having a power failure
Reason system carries out low pressure and crouches network troubleshooting, and the phone squeezed into after being had a power failure according to user prejudges the position of fall insurance or switch
It sets, power failure scale, people power, repairing plan is analyzed, determine repairing priority, calculate the strength that works needed for scene,
Recovery time is estimated, and manages work on the spot.
Outage Management Systems are distribution management System Subsystems, and control room carries out the tissue tune of power failure repairing by this system
Degree and lower job order.Exist in the way of Outage Management Systems progress troubleshooting following insufficient：First, the accuracy judged
It is to be improved；Second is that efficiency is low；Third, with duration, the low-voltage networks such as especially present factory, building and residential area make
With a large amount of electric wires or cable to realize that low-voltage electric energy dispenses, but low-voltage customer is numerous, circuit numerous and complicated, and event occurs in circuit
It is searched after barrier difficult.
Current adapted power grid has been built and the power information acquisition system (AMI) covered comprehensively and power grid geography information system
It unites (GIS), will be helpful to power distribution network power-off fault using AMI systems and generalized information system and quickly study and judge.
Invention content
It is an object of the invention to overcome deficiency in the prior art, a kind of power distribution network power-off fault analysis method is provided,
It solves power distribution network power-off fault point in the prior art and searches that difficult, efficiency is low, with technical problems such as durations.
In order to solve the above technical problems, the technical solution adopted in the present invention is：1. a kind of power distribution network power-off fault is studied and judged
Method, which is characterized in that described method includes following steps：
Triggering power-off fault studies and judges function, and survey target zone is called in determination together；
Screening power failure decompression user and the distribution net topology for obtaining the power failure decompression user；
For power failure, decompression user establishes ant colony, and overall path matrix is established according to distribution net topology；
Ant colony distribution is judged to determine the subpath matrix of ant colony search, in this, as sub-information prime matrix；
Fault search is carried out using ant group algorithm, route searching, and synchronized update are carried out to all ants in ant colony
The element numerical value of Pheromone Matrix；
End condition it has been judged as with all ants, element maximum value is power-off fault point in sub-information prime matrix.
Further, triggering the method that power-off fault studies and judges function includes：The automatic trigger of voltage monitoring exception and power failure
The active of alarm triggers.
Further, the automatic trigger condition of the voltage monitoring exception is：Single ammeter collection voltages value twice in succession
It is 0V for voltage values more than 2 users of 0V or same time.
Further, the active trigger condition for having a power failure alarm is：The power failure that Outage Management Systems receive user is reported for repairment
Phone.
Further, determine that the method for calling survey target zone together is as follows：
Step 101) judges the 10kV/400V low-tension transformers where triggering user, directly calls together and surveys the low-tension transformer
Overlay area；
It is called together at each feeder pillar of step 102) and surveys at least two ammeters；
103) lasting to judge during studying and judging, if continuing to occur calling together the user malfunction surveyed outside region, in new region
Repeat step 101) and step 102).
Further, the method for screening power failure decompression user is as follows：
User's voltage data is judged using AMI systems：If user's voltage is 0, which is judged to having a power failure
Decompression user further obtains asset number, node serial number and the power distribution network at the place location information of power failure decompression user；Such as
User's voltage is normal, then abandons, and screening judgement is carried out to next user.
Further, the method for obtaining power failure decompression user's distribution net topology is as follows：
The distribution net topology where power failure decompression user is obtained by the generalized information system docked with power failure decompression user, including：
Obtain the node serial number and user node label of power distribution network.
Further, it establishes ant colony the specific method is as follows：
Grouped accumulation is carried out according to power failure decompression user position, the size ant colony of inclusion relation is respectively formed, from small
To being respectively greatly：It is pressed in the small ant colony of same branch line, the ant colony of same low-voltage bus bar, same middle pressure feeder line ant colony and unification female
Line ant colony.
Further, establishing overall path matrix, the specific method is as follows：
10kV medium voltage distribution networks and 400V low-voltage network nodes are encoded separately；
If overall path matrix is P, overall path matrix P is split as medium voltage network path matrix PHWith low tension network
Drive matrix PL, path matrix is established respectively：
Build medium voltage network path matrix PHIf node total number is n, transverse and longitudinal is that all nodes arrange in order,
The element of matrix indicates that the path between two nodes, element subscript are the both ends node serial number in the path respectively：
Build low voltage electric network path matrix PLIf node total number is m, transverse and longitudinal is that all nodes arrange in order,
The element of matrix indicates that the path between two nodes, element subscript are the both ends node serial number in the path respectively：
Further, the method for establishing sub-information prime matrix is as follows：
Step 201) judges the voltage class of ant colony, if ant colony is 400V low-voltage customers, judges all ants in ant colony
Whether group is in same low pressure branch line：If so, the root node for range will be studied and judged tracing back to the branch line, enumerate root node and under
The node serial number for swimming node, in low voltage electric network path matrix PLUpper formation sub-information prime matrix, i.e., the pheromones square actually studied and judged
Battle array PA, A is the fault point to be searched number；Otherwise, into next step；
Step 202) judges that whether all ant colonies are in same low-voltage bus bar in ant colony：It is traced back to if so, range will be studied and judged
The root node of low-voltage bus bar enumerates the node serial number of root node and downstream node, in low voltage electric network path matrix PLUpper formation
Pheromone Matrix, i.e., the Pheromone Matrix P actually studied and judgedB, B is the fault point to be searched number；Otherwise, into next step；
Step 203) judges that whether all ant colonies are in same middle pressure feeder line in ant colony：It is traced back to if so, range will be studied and judged
The root node of the feeder line enumerates the node serial number of root node and downstream node, in medium voltage network path matrix PHAnd low voltage electric network
Path matrix PLUpper formation sub-information prime matrix, i.e., the Pheromone Matrix P actually studied and judgedC, C is the fault point to be searched number；
Otherwise, into next step；
Step 204) judges that whether all ant colonies are in same middle pressure busbar in ant colony：It is traced back to if so, range will be studied and judged
The root node of the busbar enumerates the node serial number of root node and downstream node, in medium voltage network path matrix PHAnd low voltage electric network
Path matrix PLUpper formation sub-information prime matrix, i.e., the Pheromone Matrix P actually studied and judgedD, D is the fault point to be searched number；
It is studied and judged if it is not, continuing fault search into higher level-one power distribution network；
If user is 10kV Middle Voltages, directly sub-information prime matrix is begun setting up from step 203).
Further, the method that fault search is carried out using ant group algorithm is as follows：
Step 301) Pheromone Matrix initial value is 0；
Step 302) searches for target according to the number of ant, and the walking path of every ant is the negative direction of trend, from
Ant initial position runs to the root node for studying and judging range, and the path walked leaves pheromones, i.e., in Pheromone Matrix
Corresponding element+1；
Walking is completed with all ants in step 303), as the basis for estimation of end condition, is equipped with k ant and uses
Family then carries out the positive iteration of k Pheromone Matrix；
The numerical value of each element in step 304) statistical information prime matrix, maximum numerical value is fault point position；If knot
The corresponding element value in multiple paths is equal in fruit, then judges path downstream for abort situation.
Compared with prior art, the advantageous effect that the present invention is reached：It has been built based on current adapted power grid and comprehensively
The power information acquisition system (AMI) and power grid GIS (GIS) of covering carry out mesolow and stop using ant group algorithm
The method for rapidly positioning of electric fault is studied, and the case where not increasing hardware input cost, improves the speed and standard of fault location
Exactness shortens the response time, reduces cost, improves customer satisfaction and system performance measure.
Description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is the structure flow chart that failure studies and judges Pheromone Matrix in the present invention；
Fig. 3 is the network frame topology figure for the low and medium voltage distribution network that the present invention is applicable in.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, being the flow chart of the present invention, the present invention is with the metric data of AMI systems, user information, GIS systems
Based on the low and medium voltage distribution network topology data provided of uniting, carries out route searching using ant group algorithm and target is studied and judged, wrap
It includes：Function triggering, primary data prepare, ant colony failure studies and judges process and fault message notice forwarding four processes.Below for
Four processes carry out expansion description respectively：
Step 1：Function triggers：Function triggering includes that the automatic trigger of voltage monitoring exception and the active alarmed that has a power failure are touched
Hair.The automatic trigger of voltage monitoring exception is that collection voltages value is 0V or 2 users of same time to single ammeter twice in succession
Above voltage value is 0V, triggers failure at once and studies and judges function module；The active triggering alarmed that has a power failure is that Outage Management Systems are received
To the power failure repair call of user, then actively triggers failure and study and judge function module, trouble-shooting source.
Step 2：Primary data prepares：Power-off fault enters primary data preparation link after studying and judging module triggering, including
Survey target zone is called in determination together, is called together using AMI systems progress user's voltage data and is surveyed and filter out power failure decompression user, passes through docking
Generalized information system obtains the power distribution network topological structure called together and survey target zone.
Determine that the method for calling survey target zone together is as follows：
Step 101) judges the 10kV/400V low-tension transformers where triggering user, directly calls together and surveys the low-tension transformer
Overlay area；It is called together at each feeder pillar of step 102) and surveys at least two ammeters；103) lasting to judge during studying and judging, if continuing
Occur calling the user malfunction surveyed outside region together, then repeats step 101) and step 102) in new region.
Screening power failure decompression user method be：User's voltage data is judged using AMI systems：If user's voltage
Be 0, then the user be determined as power failure decompression user, further obtain the asset number of power failure decompression user, node serial number with
And the power distribution network location information at place；It if user's voltage is normal, then abandons, screening judgement is carried out to next user.
It is by docking the method that generalized information system obtains the power distribution network topological structure for calling survey target zone together：By being lost with power failure
The generalized information system of user's docking is pressed to obtain the distribution net topology where power failure decompression user, including：Obtain the node serial number of power distribution network
And user node label.
Step 3：Ant colony failure studies and judges process：Power failure decompression user is established into ant colony first, and is established according to net topology
Then overall path matrix judges to determine the subpath matrix of ant colony search, in this, as sub-information ant colony distribution
Prime matrix then starts with ant group algorithm and carries out fault search, carries out route searching to all ants in ant colony, and synchronous
The element numerical value of fresh information prime matrix has been judged as end condition, element maximum value in Pheromone Matrix with all ants
As power-off fault point.It is specific as follows：
The specific method for establishing ant colony is：
Grouped accumulation is carried out according to power failure decompression user position, the size ant colony of inclusion relation is respectively formed, from small
To being respectively greatly：It is pressed in the small ant colony of same branch line, the ant colony of same low-voltage bus bar, same middle pressure feeder line ant colony and unification female
Line ant colony.
The specific method for establishing overall path matrix is：
To reduce the sparsity of matrix, 10kV medium voltage distribution networks and 400V low-voltage network nodes are encoded separately；
If overall path matrix is P, overall path matrix P is split as medium voltage network path matrix PHWith low tension network
Drive matrix PL, path matrix is established respectively：
Build medium voltage network path matrix PHIf node total number is n, transverse and longitudinal is that all nodes arrange in order,
The element of matrix indicates that the path between two nodes, element subscript are the both ends node serial number in the path respectively：
Build low voltage electric network path matrix PLIf node total number is m, transverse and longitudinal is that all nodes arrange in order,
The element of matrix indicates that the path between two nodes, element subscript are the both ends node serial number in the path respectively：
As shown in Fig. 2, being the structure flow chart that failure studies and judges Pheromone Matrix in the present invention, sub-information prime matrix is established
Method is：
Step 201) judges the voltage class of ant colony, if ant colony is 400V low-voltage customers, judges all ants in ant colony
Whether group is in same low pressure branch line：If so, the root node for range will be studied and judged tracing back to the branch line, enumerate root node and under
The node serial number for swimming node, in low voltage electric network path matrix PLUpper formation sub-information prime matrix, i.e., the pheromones square actually studied and judged
Battle array PA, A is the fault point to be searched number；Otherwise, into next step；
Step 202) judges that whether all ant colonies are in same low-voltage bus bar in ant colony：It is traced back to if so, range will be studied and judged
The root node of low-voltage bus bar enumerates the node serial number of root node and downstream node, in low voltage electric network path matrix PLUpper formation
Pheromone Matrix, i.e., the Pheromone Matrix P actually studied and judgedB, B is the fault point to be searched number；Otherwise, into next step；
Step 203) judges that whether all ant colonies are in same middle pressure feeder line in ant colony：It is traced back to if so, range will be studied and judged
The root node of the feeder line enumerates the node serial number of root node and downstream node, in medium voltage network path matrix PHAnd low voltage electric network
Path matrix PLUpper formation sub-information prime matrix, i.e., the Pheromone Matrix P actually studied and judgedC, C is the fault point to be searched number；
Otherwise, into next step；
Step 204) judges that whether all ant colonies are in same middle pressure busbar in ant colony：It is traced back to if so, range will be studied and judged
The root node of the busbar enumerates the node serial number of root node and downstream node, in medium voltage network path matrix PHAnd low voltage electric network
Path matrix PLUpper formation sub-information prime matrix, i.e., the Pheromone Matrix P actually studied and judgedD, D is the fault point to be searched number；
It is studied and judged if it is not, continuing fault search into higher level-one power distribution network；
If user is 10kV Middle Voltages, directly sub-information prime matrix is begun setting up from step 203).
It is using the method that ant group algorithm carries out fault search：
Step 301) Pheromone Matrix initial value is 0；
Step 302) searches for target according to the number of ant, and the walking path of every ant is the negative direction of trend, from
Ant initial position runs to the root node for studying and judging range, and the path walked leaves pheromones, i.e., in Pheromone Matrix
Corresponding element+1；
Walking is completed with all ants in step 303), as the basis for estimation of end condition, is equipped with k ant and uses
Family then carries out the positive iteration of k Pheromone Matrix；
The numerical value of each element in step 304) statistical information prime matrix, maximum numerical value is fault point position；If knot
The corresponding element value in multiple paths is equal in fruit, then judges path downstream for abort situation.
By taking failure at the A in Fig. 3 as an example, the construction step of Pheromone Matrix is as follows：
1) judge that the voltage class of ant colony, ant colony are 400V low-voltage customers, start to judge in ant colony whether is all ant colonies
In same low pressure branch line；
2) whether all ant colonies then will study and judge range trace back to the root section of the branch line in same low pressure branch line in ant colony
Point 3, enumerates the node serial number of root node and downstream node, totally 7 nodes, and PL forms the sub-information element square of 7*7 on basis
Battle array, i.e., the Pheromone Matrix P actually studied and judgedA, A is the fault point to be searched number；
Path as ant user 15 is passed by is：13-15,10-13,3-10, corresponding pheromones respectively add 1；
Walking is completed with all ants, as the basis for estimation of end condition, is used for 4 ants at shown failure
Family then carries out 4 positive iteration of Pheromone Matrix, and after terminating, Pheromone Matrix is：
From above formula Pheromone Matrix PAIn as can be seen that pa3-10 it is equal with pa10-3, pheromones are 4, the two believe
Breath element actually indicates same a road section, i.e. circuit between node 3 and node 10, can judge abort situation herein.
By taking failure at the B in Fig. 3 as an example, built using identical method, brief discussion is as follows：
1) judge the voltage class of ant colony, if ant colony is 400V low-voltage customers, start to judge all ant colonies in ant colony
Whether in same low pressure branch line；
2) judge same middle pressure feeder line, study and judge range and trace back to feeder line root node 6；
3) sub-information prime matrix is built, it includes middle pressure node 4, low pressure node 23, so middle pressure son letter to study and judge range
Breath prime matrix is 4*4 matrixes, and low pressure Pheromone Matrix is 23*23 matrixes；
4) 12 ant users are shared, 12 forward iterations is carried out, determines each element value in Pheromone Matrix；
5) statistical information prime matrix each element value finds that the corresponding element in the paths 6-7 and 7-8 is equal, is 12, then judges
Path downstream, i.e. 7-8 are abort situation.
Step 4：Fault message notice forwarding：After abort situation determines and notify forwarding Outage Management Systems to carry out
The investigation and telegram in reply of next step.
The method of the present invention is mainly used in low and medium voltage distribution network, and distribution net work structure is radial, the trend of single supply power supply
Direction is one direction, and middle pressure is 10kV, low pressure 400V, and network topology architecture is as shown in Figure 3.It is built based on current adapted power grid
If the power information acquisition system (AMI) and power grid GIS (GIS) that have simultaneously covered comprehensively, using ant group algorithm, into
The method for rapidly positioning of row mesolow power-off fault is studied, and the case where not increasing hardware input cost, improves fault location
Speed and accuracy, shorten the response time, reduce cost, improve customer satisfaction and system performance measure.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (11)
1. a kind of power distribution network power-off fault analysis method, which is characterized in that described method includes following steps：
Triggering power-off fault studies and judges function, and survey target zone is called in determination together；
Screening power failure decompression user and the distribution net topology for obtaining the power failure decompression user；
For power failure, decompression user establishes ant colony, and overall path matrix is established according to distribution net topology；
Ant colony distribution is judged to determine the subpath matrix of ant colony search, in this, as sub-information prime matrix；
Fault search is carried out using ant group algorithm, route searching, and synchronized update sub-information are carried out to all ants in ant colony
The element numerical value of prime matrix；
End condition it has been judged as with all ants, element maximum value is power-off fault point in sub-information prime matrix.
2. power distribution network power-off fault analysis method according to claim 1, which is characterized in that triggering power-off fault studies and judges work(
Can method include：The active triggering of the automatic trigger of voltage monitoring exception and the alarm that has a power failure.
3. power distribution network power-off fault analysis method according to claim 2, which is characterized in that the voltage monitoring exception
Automatic trigger condition is：Collection voltages value is voltage value more than 2 users of 0V or same time to single ammeter twice in succession
For 0V.
4. power distribution network power-off fault analysis method according to claim 2, which is characterized in that the active of the alarm that has a power failure
Trigger condition is：Outage Management Systems receive the power failure repair call of user.
5. power distribution network power-off fault analysis method according to claim 1, which is characterized in that determine to call together and survey target zone
Method is as follows：
Step 101) judges the 10kV/400V low-tension transformers where triggering user, directly calls together and surveys the low-tension transformer covering
Region；
It is called together at each feeder pillar of step 102) and surveys at least two ammeters；
103) lasting to judge during studying and judging, if continuing to occur calling together the user malfunction surveyed outside region, repeated in new region
Step 101) and step 102).
6. power distribution network power-off fault analysis method according to claim 1, which is characterized in that screening power failure decompression user's
Method is as follows：
User's voltage data is judged using AMI systems：If user's voltage is 0, which is determined as power failure decompression
User further obtains asset number, node serial number and the power distribution network at the place location information of power failure decompression user；Such as user
Voltage is normal, then abandons, and screening judgement is carried out to next user.
7. power distribution network power-off fault analysis method according to claim 1, which is characterized in that obtain power failure decompression user and match
The method of power network topology is as follows：
The distribution net topology where power failure decompression user is obtained by the generalized information system docked with power failure decompression user, including：It obtains
The node serial number and user node label of power distribution network.
8. power distribution network power-off fault analysis method according to claim 1, which is characterized in that establish the specific method of ant colony
It is as follows：
Grouped accumulation is carried out according to power failure decompression user position, is respectively formed the size ant colony of inclusion relation, from small to large
It is respectively：Busbar ant is pressed in the small ant colony of same branch line, the ant colony of same low-voltage bus bar, same middle pressure feeder line ant colony and unification
Group.
9. power distribution network power-off fault analysis method according to claim 1, which is characterized in that establish overall path matrix
The specific method is as follows：
10kV medium voltage distribution networks and 400V low-voltage network nodes are encoded separately；
If overall path matrix is P, overall path matrix P is split as medium voltage network path matrix PHWith low voltage electric network path square
Battle array PL, path matrix is established respectively：
Build medium voltage network path matrix PHIf node total number is n, transverse and longitudinal is that all nodes arrange in order, matrix
Element indicates that the path between two nodes, element subscript are the both ends node serial number in the path respectively：
Build low voltage electric network path matrix PLIf node total number is m, transverse and longitudinal is that all nodes arrange in order, matrix
Element indicates that the path between two nodes, element subscript are the both ends node serial number in the path respectively：
10. power distribution network power-off fault analysis method according to claim 9, which is characterized in that establish sub-information prime matrix
Method it is as follows：
Step 201) judges the voltage class of ant colony, if ant colony is 400V low-voltage customers, judges that all ant colonies are in ant colony
It is no in same low pressure branch line：If so, the root node that will study and judge range and trace back to the branch line, enumerates root node and downstream joint
The node serial number of point, in low voltage electric network path matrix PLUpper formation sub-information prime matrix, i.e., the Pheromone Matrix P actually studied and judgedA, A
For the fault point to be searched number；Otherwise, into next step；
Step 202) judges that whether all ant colonies are in same low-voltage bus bar in ant colony：If so, will study and judge range traces back to low pressure
The root node of busbar enumerates the node serial number of root node and downstream node, in low voltage electric network path matrix PLUpper formation sub-information
Prime matrix, i.e., the Pheromone Matrix P actually studied and judgedB, B is the fault point to be searched number；Otherwise, into next step；
Step 203) judges that whether all ant colonies are in same middle pressure feeder line in ant colony：If so, will study and judge range traces back to the feedback
The root node of line enumerates the node serial number of root node and downstream node, in medium voltage network path matrix PHWith low voltage electric network path
Matrix PLUpper formation sub-information prime matrix, i.e., the Pheromone Matrix P actually studied and judgedC, C is the fault point to be searched number；It is no
Then, into next step；
Step 204) judges that whether all ant colonies are in same middle pressure busbar in ant colony：If so, will study and judge range traces back to the mother
The root node of line enumerates the node serial number of root node and downstream node, in medium voltage network path matrix PHWith low voltage electric network path
Matrix PLUpper formation sub-information prime matrix, i.e., the Pheromone Matrix P actually studied and judgedD, D is the fault point to be searched number；If
It is no, continue fault search into higher level-one power distribution network and studies and judges；
If user is 10kV Middle Voltages, directly sub-information prime matrix is begun setting up from step 203).
11. power distribution network power-off fault analysis method according to claim 10, which is characterized in that carried out using ant group algorithm
The method of fault search is as follows：
Step 301) Pheromone Matrix initial value is 0；
Step 302) searches for target according to the number of ant, and the walking path of every ant is the negative direction of trend, from ant
Initial position runs to the root node for studying and judging range, and the path walked leaves pheromones, i.e. correspondence in Pheromone Matrix
Element+1；
Walking is completed with all ants in step 303), as the basis for estimation of end condition, is equipped with k ant user, then
Carry out the positive iteration of k Pheromone Matrix；
The numerical value of each element in step 304) statistical information prime matrix, maximum numerical value is fault point position；If in result
The corresponding element value in multiple paths is equal, then judges path downstream for abort situation.
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| CN201810402432.3A CN108594076B (en) | 2018-04-28 | 2018-04-28 | Power failure fault study and judgment method for power distribution network |
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| CN201810402432.3A CN108594076B (en) | 2018-04-28 | 2018-04-28 | Power failure fault study and judgment method for power distribution network |
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