CN103457248B - A kind of multiple faults processing method based on time shaft - Google Patents
A kind of multiple faults processing method based on time shaft Download PDFInfo
- Publication number
- CN103457248B CN103457248B CN201310355087.XA CN201310355087A CN103457248B CN 103457248 B CN103457248 B CN 103457248B CN 201310355087 A CN201310355087 A CN 201310355087A CN 103457248 B CN103457248 B CN 103457248B
- Authority
- CN
- China
- Prior art keywords
- fault
- signal
- time shaft
- tree
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 12
- 238000011084 recovery Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 12
- 230000000977 initiatory effect Effects 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 claims abstract description 11
- 238000012163 sequencing technique Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 8
- 230000009849 deactivation Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Landscapes
- Locating Faults (AREA)
Abstract
The present invention relates to a kind of multiple faults processing method based on time shaft, its technical characteristics is: comprise the following steps: fault-signal is collected: add on time shaft by fault-signal by fault alarm time sequencing; Fault initiating: find one to be positioned at time shaft high order end from time shaft and not by the fault-signal of locating, start a fault; Fault location: adopt the method for tree form data structure and depth-first search to carry out fault location, and fault is put into error listing; Fault is divided into groups; Fault Isolation; Fault recovery.Fault-signal and fault alarm time add on time shaft by the present invention, and fault location, fault grouping and Petri Nets are carried out to the fault-signal on time shaft, efficiently solve that the processing speed that prior art exists is slow, problem such as waste resource, poor accuracy etc., improve processing speed and the reliability of fault, ensure that the normal operation of feed automated system.
Description
Technical field
The invention belongs to feed technical field of automation, especially a kind of multiple faults processing method based on time shaft.
Background technology
In normal state, the state of real time monitoring feeder line block switch and interconnection switch and feeder current, voltage condition, realize a distant place for line switching or close a floodgate on the spot and sub-switching operation in feeder automation.Failure logging is obtained when fault, and energy automatic discrimination and isolation feeder fault section, rapidly non-faulting region is restored electricity.Wherein fault location, isolation and the automatic interruption duration recovered improving reliability and the shortening non-faulting district powered are significant, and this is also a major function of feed automation.The fault location of feeder line, isolation and automatic recovery of power supply are unique functions of feeder automation, the system be made up of circuit breaker, sectionalizer, when feeder line generation permanent fault, automatically fault can be positioned, realizes Fault Isolation by the sequentially-operating of switchgear; Realize load transfer at loop-net operation or ring network structure in the power distribution network of open loop operation, restore electricity.When there is transient fault, usually because of after disengagement failure electric current, fault disappears automatically, the power supply that can be recovered load by circuit breaker automatic reclosing.
At present, usual processing mode after feeder line breaks down is: according to single failure signal, (fault-signal refers to: the switch failure tripping operation that fault causes after occurring, the total action of accident, fault detector short circuit or fault detector ground connection, such as switch failure tripping operation) trigger fault startup, which is many at fault-signal; Or when multiple faults (multiple faults refers to the many places fault occurred at one time) occurs, time fault-signal is mixed in together, a lot of problem can be there is in the process of fault-signal, sorting, classification, the same fault of easy appearance is judged as multiple fault, also can waste a large amount of valuable computing times and computer resource even if merge fault in the troubleshooting later stage again.Meanwhile, after a fault occurs, need a regular time of wait, and then grouping calculating is carried out to the fault in this time, can fault handling time be extended like this, and may cause grouping not exclusively.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of reasonable in design, processing speed is fast, accuracy is high multiple faults processing method based on time shaft is provided.
The present invention solves existing technical problem and takes following technical scheme to realize:
Based on a multiple faults processing method for time shaft, comprise the following steps:
Step 1: fault-signal is collected: add on time shaft by fault-signal by fault alarm time sequencing;
Step 2: fault initiating: find one to be positioned at time shaft high order end from time shaft and not by the fault-signal of locating, start a fault;
Step 3: fault location: adopt the method for tree form data structure and depth-first search to carry out fault location, and fault is put into error listing;
Step 4: fault is divided into groups: the time scan round error listing occurred according to fault carries out fault grouping;
Step 5: Fault Isolation;
Step 6: fault recovery: carry out fault recovery in units of fault group.
And, the concrete treatment step of described step 2 is: first judged whether that fault is located, if do not had, one is then found to be positioned at time shaft high order end on a timeline and not by the fault-signal of locating, start a fault, and using the enabling signal of this signal as this fault, then form the foundation of a fault-signal collection as fault location by time shaft copies out using the fault-signal of front and back a period of time that this fault-signal is anchor point; Otherwise, wait for that fault location completes the new fault of deactivation again.
And the processing procedure of described step 3 is:
(1) with fault initiating signal place equipment for root node, carry out depth-first search respectively to equipment two ends, form two trees according to original annexation of equipment, tree node is switch, fault detector, load equipment;
(2) on one tree, find service entrance switch node, and this tree is carried out rotational deformation, the tree root node after distortion is service entrance switch, then other one tree is spliced to service entrance switch be root node this tree on obtain splicing tree;
(3) all signals concentrated by fault-signal, in the enterprising row labels of splicing tree, abandon the fault-signal that those can not find corresponding tree node in the process of mark;
(4) on splicing tree, all end fault signal nodes are found out;
(5) linear paths between all end nodes to splicing tree root node is calculated;
(6) in all linear paths calculated, a path comprising fault initiating signal is found out as failure path;
(7) failure path one end is service entrance switch, and the other end is the direct upstream equipment being close to fault zone, and this fault is positioned in device downstream;
(8) all fault-signals on failure path are labeled as by fault location mistake at time shaft.
And, the concrete processing procedure of described step 4 fault grouping is: by time of failure from as far as nearly ceaselessly scan round error listing, find a fault be not grouped, whether query time axle there is within a period of time that this fault collects fault-signal the fault of other no-fix, if had, then wait for that this fault location completes, when whether still having the fault of other no-fix in a period of time that after this fault location completes, this fault collects signal on query time axle again, if have, continue to wait for, otherwise all faults of this multiple faults have all been located, then packet transaction is carried out to fault.
And the concrete processing procedure of described step 6 fault recovery is:
(1) list is put in regions of recovering that needs all in fault group;
(2) scan round is carried out to recovery list, each wheel scan all record this wheel scan to all regions that can recover and recovery scheme;
(3) during next round scanning hypothesis above a few wheel scan to all regions that can recover successfully recover, then calculate recovery scheme on this basis;
(4) until stop scanning when not having region to be restored or a certain wheel scan not to recover any region in list;
(5) the recovery scheme switching manipulation of whole group of fault can finally be drawn.
Advantage of the present invention and good effect are:
Fault-signal and fault alarm time add on time shaft by the present invention, and fault location, fault grouping and Petri Nets are carried out to the fault-signal on time shaft, efficiently solve that the processing speed that prior art exists is slow, problem such as waste resource, poor accuracy etc., improve processing speed and the reliability of fault, ensure that the normal operation of feed automated system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention adopts record trouble signal and fault alarm time on a timeline;
Fig. 2 is the model for cable line schematic diagram that the fault recovery of the embodiment of the present invention uses;
Fig. 3 is tree 1 structural representation of tree structure;
Fig. 4 is tree 2 structural representation of tree structure;
Fig. 5 is tree 3 structural representation of tree structure;
Fig. 6 is the process chart of fault of the present invention grouping;
Fig. 7 is the model for cable line schematic diagram that the fault recovery of the embodiment of the present invention uses.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is further described.
Based on a multiple faults processing method for time shaft, comprise the following steps:
Step 1: fault-signal is collected and added on time shaft by fault alarm time sequencing by fault-signal.
After there is a fault generation in feeder line, all fault-signals relevant to this fault all can be sent to main website and produce alarm signal within t second, according to the time of fire alarming receiving fault-signal, signal is added on time shaft, so just can time interval of time of producing of all fault-signal of accurate recording and each signal, sequencing etc., receive one, add one, more more late toward the time that the fault-signal of time shaft right-hand member occurs, as shown in Figure 1, time shaft in figure has 1, 2, 3, 4 four fault-signals, the relation between correct time and each signal that these four signals occur can be inquired about at any time by this four signals position on a timeline.
So-called time shaft refers to: according to time sequencing, the event of one or more aspects is together in series, forms relatively complete record system.
Step 2: fault initiating
In this step, first judge whether have fault to locate, if do not had, one is found to be positioned at time shaft high order end (namely time of origin the earliest) on a timeline and not by the fault-signal of locating, start a fault, and using the enabling signal of this signal as this fault, then copy out forming the foundation of a fault-signal collection as fault location by the fault-signal on time shaft within this fault-signal is anchor point front and back t second; Otherwise wait for that fault location completes the new fault of deactivation again.
Step 3: fault location
In this step, in order to farthest reduce the number of times of search spread, improving efficiency and the locating speed of program operation, adopting the method for tree form data structure and depth-first search to carry out fault location.So-called tree form data structure refers to: by n(n>=1) individual limited node forms the set that has hierarchical relationship; It is called " tree " is because it looks like the tree of a reversal of the natural order of things, that is it be root upward, and leaf is down.It has following feature: each node has zero or multiple child node; The node of forerunner is not had to be called root node; Each non-root node has and only has a father node; Except root node, each child node can be divided into m disjoint subtree.So-called depth-first search belongs to the one of nomography, and english abbreviation is DFS and Depth First Search, its process be inventionbriefly the individual path possible to each be deep into can not more deeply till, and each node can only be accessed once.
Concrete position fixing process is as follows:
(1) with fault initiating signal place equipment for root node, carry out depth-first search respectively to equipment two ends and form two trees (tree 1, tree 2) according to original annexation of equipment, tree node is switch, fault detector, load equipment.
(2) on tree 1 or tree 2, find service entrance switch node, and this tree is carried out rotational deformation, the tree root node after distortion is service entrance switch, then other one tree is spliced to service entrance switch be root node this tree on, spliced tree is tree 3.
(3) all signals concentrated by fault-signal, in the enterprising row labels of tree 3, abandon the fault-signal that those can not find corresponding tree node in the process of mark.
(4) on tree 3, find out all end fault signal nodes, be i.e. in child's node of this node, do not comprise fault-signal node.
(5) linear paths between all end nodes to tree 3 root node is calculated.
(6) in all linear paths calculated, a path comprising fault initiating signal is found out as failure path.
(7) failure path one end is service entrance switch, and the other end is the direct upstream equipment A being close to fault zone, and namely fault is positioned in device A downstream
(8) all fault-signals on failure path are labeled as by fault location mistake at time shaft.After fault location success, this fault is put into error listing.
The method of fault location is described for the model for cable line shown in Fig. 2 below:
Assumed fault enabling signal equipment is the A2 switch in Fig. 2, and the ID of this switch is CSCCBA2, and the ID of service entrance switch is CSCCBS1, and concrete fault location process is as follows:
(1) with CSCCBA2 switch ends point formation tree 1(as shown in Figure 1), tree 2(as shown in Figure 2);
(2) can see that service entrance switch CSCCBS1 is on tree 2, then by tree 2 with CSCCBS1 node for root node carries out rotational deformation, to be contact with CSCCBA2 after distortion carry out merging with tree 1 obtains setting 3(as shown in Figure 3);
(3) in hypothesis tree 3 with triangle mark node CSCCBS1, CSCCBB2, CSCCBA2, CSCCBA3 with fault-signal;
(4) CSCCBB2, CSCCBA2 are end node;
(5) calculating end node can draw two paths CSCCBB2-CSCCBA1-CSCCBS1 and CSCCBA2-CSCCBA1-CSCCBS1 to the linear paths of tree 3 root node CSCCBS1;
(6) comprise fault initiating signal CSCCBA2 in the CSCCBA2-CSCCBA1-CSCCBS1 of path, namely this path is failure path;
(7) failure path one end CSCCBS1 is service entrance switch, and fault location is in CSCCBA2 downstream;
(8) fault-signal CSCCBA2, CSCCBA1, CSCCBS1 are labeled as locate on a timeline.
Step 4: fault is divided into groups
When faults multiple in short time generation in heaps or when occurring one by one, the fault-signal of these faults is often mixed in together, this programme provide based on time shaft mode to grasp grouping opportunity, to define which fault be provide a set of more efficient, succinct mode simultaneously.Concrete scheme is as follows:
As shown in Figure 6, by time of failure from as far as nearly ceaselessly scan round error listing, find a fault be not grouped (fault 1), whether query time axle there is within t second that this fault collects fault-signal the fault of other no-fix, if had, then wait for that this fault (fault 2) has been located, whether fault 2 still has the fault of other no-fix in t second that after having located, fault 2 collects signal on query time axle again, if have, continue to wait for, otherwise this multiple faults (also single fault can be regarded as only have the multiple faults of a fault) all faults have all been located, then packet transaction is carried out to fault.
Step 5: Fault Isolation
Switch around the effect open failure region of Fault Isolation, by fault and other zone isolation.Fault grouping adopts common technological means to realize, and is not described in detail in this.
Step 6: fault recovery
Can be restored electricity by combined floodgate interconnection switch in some region of fault down stream after Fault Isolation, in units of fault group, calculate the scheme that restores electricity in these regions.So-called fault group refers to that two guilty culprit electrical island are connected by means of only the switch of a separating brake, and closing this connecting valve can cause two place's fault definition of this Liang Ge island Electromagnetic coupling to become relevant fault, and the fault of multiple direct or indirect association forms one group of fault.
For model for cable line as shown in Figure 7, fault recovery method is described below:
Two regions (fault 1 and fault 2) red area that breaks down is had to break down in figure, so need separating brake A2, fault 1 is isolated by A1, separating brake A10, fault 2 is isolated by A11, the power supply recovering fault 2 isolating switch A10 downstream can only by combined floodgate interconnection switch A9, but because A2, A3 needs to disconnect, even if so closed A9, A10 downstream still cannot restore electricity, according to group forming criterion, fault 1 is connected by switch A9 with fault 2, so these two faults will be integrated into same group, overallly can consider recovery scheme, algorithm is elaborated as follows:
(1) list is put into, the A3 downstream of such as upper figure, A10 downstream in regions of recovering that needs all in fault group;
(2) scan round is carried out to recovery list, each wheel scan all record this wheel scan to all regions that can recover and recovery scheme, such as above-mentioned A3 downstream calculates when the first round is scanned can be recovered by combined floodgate A5;
(3) next round scanning time hypothesis above a few wheel scan to all regions that can recover successfully recover, calculate recovery scheme on this basis again, such as, in upper figure, A10 downstream supposes that when the second wheel scan A3 downstream restores electricity, therefore combined floodgate A9 can restore electricity;
(4) until stop scanning when not having region to be restored or a certain wheel scan not to recover any region in list;
(5) the recovery scheme switching manipulation of whole group of fault can finally be drawn.Such as, can complete fault recovery by close a floodgate successively A5, A9 in upper figure.
It is emphasized that; embodiment of the present invention is illustrative; instead of it is determinate; therefore the present invention includes the embodiment be not limited to described in embodiment; every other execution modes drawn by those skilled in the art's technical scheme according to the present invention, belong to the scope of protection of the invention equally.
Claims (5)
1., based on a multiple faults processing method for time shaft, it is characterized in that: comprise the following steps:
Step 1: fault-signal is collected: add on time shaft by fault-signal by fault alarm time sequencing;
Step 2: fault initiating: find one to be positioned at time shaft high order end from time shaft and not by the fault-signal of locating, start a fault;
Step 3: fault location: adopt the method for tree form data structure and depth-first search to carry out fault location, and fault is put into error listing;
Step 4: fault is divided into groups: the time scan round error listing occurred according to fault carries out fault grouping;
Step 5: Fault Isolation;
Step 6: fault recovery: carry out fault recovery in units of fault group.
2. a kind of multiple faults processing method based on time shaft according to claim 1, it is characterized in that: the concrete treatment step of described step 2 is: first judged whether that fault is located, if do not had, one is then found to be positioned at time shaft high order end on a timeline and not by the fault-signal of locating, start a fault, and will time shaft high order end be positioned at and not by the fault-signal of the locating enabling signal as this fault, then the foundation of a fault-signal collection as fault location is formed on time shaft to be positioned at time shaft high order end and not copied out by the fault-signal of the fault-signal of locating front and back a period of time that is anchor point, otherwise, wait for that fault location completes the new fault of deactivation again.
3. a kind of multiple faults processing method based on time shaft according to claim 1, is characterized in that: the processing procedure of described step 3 is:
(1) with fault initiating signal place equipment for root node, carry out depth-first search respectively to equipment two ends, form two trees according to original annexation of equipment, tree node is switch, fault detector, load equipment;
(2) on one tree, find service entrance switch node, and this tree is carried out rotational deformation, the tree root node after distortion is service entrance switch, then other one tree is spliced to service entrance switch be root node this tree on obtain splicing tree;
(3) all signals concentrated by fault-signal, in the enterprising row labels of splicing tree, abandon the fault-signal that those can not find corresponding tree node in the process of mark;
(4) on splicing tree, all end fault signal nodes are found out;
(5) linear paths between all end fault signal nodes to splicing tree root node is calculated;
(6) in all linear paths calculated, a path comprising fault initiating signal is found out as failure path;
(7) failure path one end is service entrance switch, and the other end is the direct upstream equipment being close to fault zone, and this fault is positioned in device downstream;
(8) all fault-signals on failure path are labeled as by fault location mistake at time shaft.
4. a kind of multiple faults processing method based on time shaft according to claim 1, it is characterized in that: the concrete processing procedure of described step 4 fault grouping is: by time of failure from as far as nearly ceaselessly scan round error listing, find a fault be not grouped, whether query time axle there is within a period of time that this fault collects fault-signal the fault of other no-fix, if had, then wait for that this fault location completes, when whether still having the fault of other no-fix in a period of time that after this fault location completes, this fault collects signal on query time axle again, if have, continue to wait for, otherwise all faults of this multiple faults have all been located, then packet transaction is carried out to fault.
5. a kind of multiple faults processing method based on time shaft according to claim 1, is characterized in that: the concrete processing procedure of described step 6 fault recovery is:
(1) list is put in regions of recovering that needs all in fault group;
(2) scan round is carried out to recovery list, each wheel scan all record this wheel scan to all regions that can recover and recovery scheme;
(3) during next round scanning hypothesis above a few wheel scan to all regions that can recover successfully recover, then calculate recovery scheme on this basis;
(4) until stop scanning when not having region to be restored or a certain wheel scan not to recover any region in list;
(5) the recovery scheme switching manipulation of whole group of fault can finally be drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310355087.XA CN103457248B (en) | 2013-08-15 | 2013-08-15 | A kind of multiple faults processing method based on time shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310355087.XA CN103457248B (en) | 2013-08-15 | 2013-08-15 | A kind of multiple faults processing method based on time shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103457248A CN103457248A (en) | 2013-12-18 |
| CN103457248B true CN103457248B (en) | 2015-09-23 |
Family
ID=49739340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310355087.XA Active CN103457248B (en) | 2013-08-15 | 2013-08-15 | A kind of multiple faults processing method based on time shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103457248B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905730B (en) * | 2016-06-01 | 2018-12-18 | 江门市拓达电子有限公司 | A kind of elevator warning is prescribed a time limit sequence control method |
| CN106646050B (en) * | 2016-12-26 | 2020-06-26 | 北京金风科创风电设备有限公司 | Fault diagnosis device and method for wind power converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0940901A2 (en) * | 1998-03-05 | 1999-09-08 | Kabushiki Kaisha Toshiba | Control system, method of protectively controlling electric power system and storage medium storing program code |
| CN101989766A (en) * | 2009-08-03 | 2011-03-23 | 南京南瑞继保电气有限公司 | Method for diagnosing faults of power system on the basis of protecting action chain |
| CN202042946U (en) * | 2011-04-25 | 2011-11-16 | 成都思晗科技有限公司 | Automatic power distribution network fault positioning system |
-
2013
- 2013-08-15 CN CN201310355087.XA patent/CN103457248B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0940901A2 (en) * | 1998-03-05 | 1999-09-08 | Kabushiki Kaisha Toshiba | Control system, method of protectively controlling electric power system and storage medium storing program code |
| CN101989766A (en) * | 2009-08-03 | 2011-03-23 | 南京南瑞继保电气有限公司 | Method for diagnosing faults of power system on the basis of protecting action chain |
| CN202042946U (en) * | 2011-04-25 | 2011-11-16 | 成都思晗科技有限公司 | Automatic power distribution network fault positioning system |
Non-Patent Citations (2)
| Title |
|---|
| 基于树型结构的配电网故障处理新算法;盛四清等;《电网技术》;20080430;第32卷(第8期);第42-46页 * |
| 多重故障对配电网可靠性指标的影响度;颜秋容等;《电网技术》;20100831;第34卷(第8期);第108-111页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103457248A (en) | 2013-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105515188B (en) | A kind of power distribution network centralization feeder automation fault handling method | |
| CN104767182B (en) | A kind of overhead transmission line type distribution network failure processing method | |
| CN102035202B (en) | Network reconfiguration system | |
| CN103490392B (en) | Fault handling method of power distribution network comprising distributed power supplies and microgrids | |
| CN103354390A (en) | Distributed intelligent feed line automation control method | |
| CN104950216B (en) | A kind of distribution line failure localization method based on waveform comparison | |
| CN110148930A (en) | The method of fault location and topology automatic identification in distribution network | |
| CN110348690B (en) | Tree search based result query menu grid accident auxiliary decision making system and method | |
| CN102684308B (en) | Superconducting state information-based power distribution network self-healing system and method | |
| CN102354977A (en) | Feeder fault handling method | |
| CN101871988A (en) | System and method for positioning medium voltage distribution network using power line carrier communication | |
| CN105790442A (en) | Distributed intelligent feeder automation system capable of achieving quick self-healing | |
| CN103944153A (en) | Self-adaption intelligent protection method for power distribution network applied to high-permeability distributed power supply | |
| CN104242467A (en) | Intelligent self-healing controlling method of feeder line of distribution network | |
| CN108963959A (en) | Centralized area power grid prepared auto restart control system and control method based on LoRa | |
| CN104092305A (en) | Power distribution network fault handling method | |
| CN104319743B (en) | The method and apparatus of the main transformer high-pressure side Fast Operating Backup Protection based on station domain information | |
| CN103457248B (en) | A kind of multiple faults processing method based on time shaft | |
| CN103227450A (en) | On-line failure recovery method and system | |
| CN105930608A (en) | Improved covert fault detection method capable of considering information uncertainty | |
| CN102005819A (en) | Fault isolation method of electric distribution network | |
| CN104201766B (en) | The method determining prepared auto restart sequential and combination is followed the trail of based on power supply point | |
| CN103227460A (en) | Intelligent power distribution monitoring system and intelligent power distribution monitoring method | |
| CN106711967A (en) | Flexible direct current power grid fault fast recovery method and system | |
| CN202435021U (en) | Automatic fault isolation system for distribution network feed line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |