CN106786425B - It is a kind of to be overlapped formula failure separation method and system on the spot - Google Patents
It is a kind of to be overlapped formula failure separation method and system on the spot Download PDFInfo
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- CN106786425B CN106786425B CN201710029620.1A CN201710029620A CN106786425B CN 106786425 B CN106786425 B CN 106786425B CN 201710029620 A CN201710029620 A CN 201710029620A CN 106786425 B CN106786425 B CN 106786425B
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- 238000000926 separation method Methods 0.000 title claims abstract description 17
- 238000002955 isolation Methods 0.000 claims abstract description 56
- 230000009471 action Effects 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000009826 distribution Methods 0.000 claims description 39
- 230000001133 acceleration Effects 0.000 claims description 25
- 230000005611 electricity Effects 0.000 claims description 24
- 230000001052 transient effect Effects 0.000 claims description 19
- 230000006837 decompression Effects 0.000 claims description 16
- 230000011218 segmentation Effects 0.000 claims description 15
- 230000003111 delayed effect Effects 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 22
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 206010003830 Automatism Diseases 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
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Abstract
It is overlapped formula failure separation method and system on the spot the present invention provides a kind of, the method includes first section switches of control substation's wire-outgoing breaker or trunk feeder successively to carry out tripping and single shot reclosing, and trunk feeder failure is isolated；The action delay time of setting branch line breaker is respectively smaller than the action delay time of substation's wire-outgoing breaker and section switch, and controls branch line breaker and successively carry out tripping and single shot reclosing, and trunk feeder branched line failure is isolated；The action delay time of setting user demarcation breaker is respectively smaller than the action delay time of substation's wire-outgoing breaker, section switch and branch line breaker, and controls.Compared with prior art, a kind of coincidence formula failure separation method and system on the spot provided by the invention, it is possible to reduce the tripping times of substation's wire-outgoing breaker have further reduced the service restoration time in Fault Isolation time and non-faulting region.
Description
Technical field
The present invention relates to the feeder automation isolation technology fields of line fault, and in particular to a kind of to be overlapped formula failure on the spot
Partition method and system.
Background technique
Formula FEEDER AUTOMATION refers to the control that distribution main website is not depended on when power distribution network breaks down on the spot, leads to
Cross distribution terminal be in communication with each other, protection cooperation or time cooperation, realize fault zone isolation and non-faulting block supply it is extensive
It is multiple, and report treatment process and result.Currently, formula feeder automation scheme mainly includes intelligent distribution type feeder automation on the spot
With coincidence formula feeder automation, being overlapped formula feeder automation includes branch's boundary type, voltage-time type and voltage and current time type
Etc. types feeder automation.Branch's boundary type, voltage-time type and voltage and current time type are briefly described below:
(1) branch's boundary type feeder automation
Branch's boundary type feeder automation mainly includes two kinds of technical solutions: first is that based on the means of relay protection and utilizing grade
Difference cooperation quickly cuts off branch line short circuit and ground fault, usually in substation's outlet switch, big branch's head end switch, Yong Hufen
Branch switchgear distribution three-level is differential.Second is that the load configured in the case where protecting differential insufficient situation by branch line head end or boundary
It switchs and quickly isolates Failure And Recovery using boundary feeder automation logic and single shot reclosing and completely power.Branch's boundary type
Feeder automation is not used alone usually, can apply and cooperate simultaneously with other kinds of feeder automation.
(2) voltage-time type feeder automation
The technical solution of voltage-time type feeder automation is mainly " decompression separating brake, the incoming call time-delay closing " using switch
Function, and matched using voltage and time as criterion with substation outlet switch reclosing, by the logic of terminal device itself
Arbitration functions, automatic separating fault, the power supply for restoring non-faulting section, and voltage-time type feeder automation is in practical application
It may need to cooperate multiple shot reclosing, fault handling time is longer.
(3) voltage and current time type feeder automation
The technical solution of voltage and current time type feeder automation is mainly to utilize the multiple weight in substation's outlet switch
Decompression number and overcurrent number are remembered in making process, the isolation of realization fault section restores electricity with non-faulting section.Wherein,
Single shot reclosing can identify that transient fault, secondary reclosing can be weighed three times with positioning failure section and isolated fault section
The non-faulting section power supply of fault point front end can be restored by closing a floodgate, and fault handling time is longer.
Summary of the invention
In order to overcome the drawbacks of the prior art, it is overlapped formula failure separation method and system on the spot the present invention provides a kind of.
In a first aspect, a kind of technical solution for being overlapped formula failure separation method on the spot is in the present invention:
The described method includes:
Fault zone according to power distribution network determines that fault type, the fault type include trunk feeder failure, trunk feedback
Line branched line failure and trunk feeder branch line user side line fault；Wherein: trunk feeder passes through change in the power distribution network
Power station wire-outgoing breaker connect with substation and is arranged on the trunk feeder multiple concatenated section switches, trunk feeder point
Branch line is connect by branch line breaker with the trunk feeder, and trunk feeder branch line user side route passes through user demarcation
Breaker is connect with the trunk feeder branched line；
Control substation's wire-outgoing breaker or the trunk feeder first section switch successively carry out tripping and
The trunk feeder failure is isolated in single shot reclosing；
The action delay time for setting the branch line breaker is respectively smaller than substation's wire-outgoing breaker and segmentation
The action delay time of breaker, and control the branch line breaker and successively carry out tripping and single shot reclosing, described in isolation
Trunk feeder branched line failure；
The action delay time for setting the user demarcation breaker is respectively smaller than substation's wire-outgoing breaker, segmentation
The action delay time of breaker and branch line breaker, and control the user demarcation breaker and successively carry out tripping and primary
The trunk feeder branch line user side line fault is isolated in reclosing.
Second aspect, a kind of technical solution being overlapped formula fault isolation system on the spot is in the present invention:
The system comprises:
Fault type determining module determines fault type, the fault type packet for the fault zone according to power distribution network
Include trunk feeder failure, trunk feeder branched line failure and trunk feeder branch line user side line fault；Wherein: described to match
Trunk feeder is connect with substation and is arranged on the trunk feeder multiple concatenated by substation's wire-outgoing breaker in power grid
Section switch, trunk feeder branched line are connect by branch line breaker with the trunk feeder, trunk feeder branch line
User side route is connect by user demarcation breaker with the trunk feeder branched line；
Trunk feeder Fault Isolation module, for controlling first of substation's wire-outgoing breaker or the trunk feeder
Section switch successively carries out tripping and single shot reclosing, and the trunk feeder failure is isolated；
Trunk feeder branched line Fault Isolation module, for setting the action delay time point of the branch line breaker
Not little Yu substation's wire-outgoing breaker and section switch the action delay time, and control the branch line breaker according to
It is secondary to carry out tripping and single shot reclosing, the trunk feeder branched line failure is isolated；
Trunk feeder branch line user side line fault isolation module, for setting the movement of the user demarcation breaker
Delay time is respectively smaller than the action delay time of substation's wire-outgoing breaker, section switch and branch line breaker,
And control the user demarcation breaker and successively carry out tripping and single shot reclosing, the trunk feeder branch line user side is isolated
Line fault.
Compared with the immediate prior art, the beneficial effects of the present invention are:
1, a kind of coincidence formula failure separation method on the spot provided by the invention, is being examined by controlling substation's wire-outgoing breaker
Tripping and single shot reclosing are successively carried out after measuring fault current, trunk feeder failure can be effectively isolated；By setting power transformation
It stands action delay time difference of wire-outgoing breaker and section switch, and controls branch line breaker and successively carry out tripping and primary
Reclosing can isolate trunk feeder branched line failure, reduce the tripping times of substation's wire-outgoing breaker, further contract
The small service restoration time of Fault Isolation time and non-faulting region；Pass through setting substation's wire-outgoing breaker, segmentation open circuit
The time difference of device and user demarcation breaker, and control user demarcation breaker and successively carry out tripping and single shot reclosing, it can be with
Trunk feeder branch line user side line fault is isolated, reduces the tripping times of substation's wire-outgoing breaker, further reduces
Service restoration time of Fault Isolation time and non-faulting region；
2, a kind of coincidence formula fault isolation system, trunk feeder Fault Isolation module on the spot provided by the invention pass through control
Substation's wire-outgoing breaker successively carries out tripping and single shot reclosing after detecting fault current, can be effectively isolated trunk feedback
Line failure；The movement that trunk feeder branched line Fault Isolation module passes through setting substation's wire-outgoing breaker and section switch
Delay time is poor, and controls branch line breaker and successively carry out tripping and single shot reclosing, can isolate trunk feeder branch line
Road failure reduces the tripping times of substation's wire-outgoing breaker, has further reduced Fault Isolation time and non-faulting region
The service restoration time；Trunk feeder branch line user side line fault isolation module by setting substation's wire-outgoing breaker,
The time difference of section switch and user demarcation breaker, and control user demarcation breaker and successively carry out tripping and primary coincidence
Lock can isolate trunk feeder branch line user side line fault, reduce the tripping times of substation's wire-outgoing breaker, into one
Step reduces the service restoration time in Fault Isolation time and non-faulting region.
Detailed description of the invention
Fig. 1: a kind of in the embodiment of the present invention to be overlapped formula failure separation method implementation flow chart on the spot；
Fig. 2: short trouble partition method implementation flow chart in the embodiment of the present invention；
Fig. 3: earth fault isolation method implementation flow chart in the embodiment of the present invention；
Fig. 4: formula feeder automation configuration schematic diagram on the spot in the embodiment of the present invention；
Fig. 5: power distribution network occurs substation's wire-outgoing breaker tripping when trunk feeder short trouble, divides in the embodiment of the present invention
Section breaker decompression separating brake schematic diagram；
Fig. 6: substation's wire-outgoing breaker once weighs when trunk feeder short trouble occurs for power distribution network in the embodiment of the present invention
First section switch reclosing schematic diagram after combined floodgate；
Fig. 7: section switch isolated fault is illustrated after trunk feeder short trouble occurs for power distribution network in the embodiment of the present invention
Figure；
Fig. 8: non-faulting region restores electricity signal after trunk feeder short trouble occurs for power distribution network in the embodiment of the present invention
Figure；
Fig. 9: in the embodiment of the present invention power distribution network occur trunk feeder branched line short trouble after branch line breaker every
From failure schematic diagram；
Figure 10: user point after trunk feeder branch line user side line short fault occurs for power distribution network in the embodiment of the present invention
Boundary's breaker isolated fault schematic diagram；
Figure 11: in the embodiment of the present invention power distribution network occur trunk feeder ground fault Shi Shoutai section switch tripping, its
Remaining each section switch decompression separating brake schematic diagram；
Figure 12: section switch isolated fault is illustrated after trunk feeder ground fault occurs for power distribution network in the embodiment of the present invention
Figure；
Figure 13: non-faulting region restores electricity signal after trunk feeder ground fault occurs for power distribution network in the embodiment of the present invention
Figure；
Figure 14: in the embodiment of the present invention power distribution network occur trunk feeder branched line ground fault after branch line breaker every
From failure schematic diagram；
Figure 15: user point after trunk feeder branch line user side line-to-ground fault occurs for power distribution network in the embodiment of the present invention
Boundary's breaker isolated fault schematic diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention clearly and completely illustrated, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Separately below in conjunction with attached drawing, formula failure separation method is overlapped to one kind provided in an embodiment of the present invention on the spot and is said
It is bright.
Fig. 1 is a kind of coincidence formula failure separation method implementation flow chart on the spot in the embodiment of the present invention, as shown, this reality
It applies and is overlapped formula failure separation method in example on the spot and can implement as steps described below, specifically:
Step S101: the fault zone according to power distribution network determines fault type.
Fault type includes trunk feeder failure, trunk feeder branched line failure and trunk feeder branch in the present embodiment
Line user side line fault；Wherein: trunk feeder is connect and trunk by substation's wire-outgoing breaker with substation in power distribution network
Multiple concatenated section switches are set on feeder line, and trunk feeder branched line is connected by branch line breaker and trunk feeder
It connects, trunk feeder branch line user side route is connect by user demarcation breaker with trunk feeder branched line.
Fig. 4 is formula feeder automation configuration schematic diagram on the spot in the embodiment of the present invention, as shown, substation's outlet open circuit
Between device CB1 and CB2 be equipped with a 10kV trunk feeder, trunk feeder include concatenated section switch FS1, FS2, FS3,
Interconnection switch LS3, section switch FS4 and FS5.Trunk feeder branched line is connected to segmentation by branch line breaker FB1
Between breaker FS2 and FS3, a trunk feeder branch line user side route is presented by user demarcation breaker PB1 and trunk
The connection of line branched line, another trunk feeder branch line user side route pass through user demarcation breaker PB2 and trunk feeder
Branched line connection.Wherein: section switch FS1 is first section switch of trunk feeder.
Step S102: control substation's wire-outgoing breaker or trunk feeder first section switch successively carry out tripping and
Trunk feeder failure is isolated in single shot reclosing.
Step S103: the action delay time of setting branch line breaker is respectively smaller than substation's wire-outgoing breaker and segmentation
The action delay time of breaker, and control branch line breaker and successively carry out tripping and single shot reclosing, trunk feeder is isolated
Branched line failure.
Step S104: the action delay time of setting user demarcation breaker is respectively smaller than substation's wire-outgoing breaker, divides
The action delay time of section breaker and branch line breaker, and control user demarcation breaker and successively carry out tripping and primary weight
It closes a floodgate, trunk feeder branch line user side line fault is isolated.
Tripping and one are successively carried out after detecting fault current by control substation's wire-outgoing breaker in the present embodiment
Secondary reclosing can be effectively isolated trunk feeder failure；By the movement for setting substation's wire-outgoing breaker and section switch
Delay time is poor, and controls branch line breaker and successively carry out tripping and single shot reclosing, can isolate trunk feeder branch line
Road failure reduces the tripping times of substation's wire-outgoing breaker, has further reduced Fault Isolation time and non-faulting region
The service restoration time；By the time difference of setting substation's wire-outgoing breaker, section switch and user demarcation breaker, and
Control user demarcation breaker successively carries out tripping and single shot reclosing, can isolate the event of trunk feeder branch line user side route
Barrier, reduces the tripping times of substation's wire-outgoing breaker, has further reduced the confession of Fault Isolation time and non-faulting region
Electric recovery time.
Further, the present embodiment step S102 can be implemented as steps described below, specifically:
1, trunk feeder short trouble is isolated
(1) control substation's wire-outgoing breaker detects tripping excision failure after fault current, so that each in trunk feeder
Section switch decompression separating brake.I.e. after the tripping of substation's wire-outgoing breaker, between substation's wire-outgoing breaker and fault zone
Each section switch successively decompression separating brake.
Fig. 5 be the embodiment of the present invention in power distribution network occur trunk feeder short trouble when substation's wire-outgoing breaker tripping,
Section switch decompression separating brake schematic diagram, as shown, substation after short trouble occurs between section switch FS2 and FS3
Wire-outgoing breaker CB1, section switch FS1 and FS2 detect that fault current, FS1 and FS2 only give a warning, CB1 delay
It trips after 0.5s, section switch FS1, FS2, FS3 successively decompression separating brake.
(2) control substation's wire-outgoing breaker carries out single shot reclosing, so that each section switch is successively in trunk feeder
It sends a telegram here reclosing: when substation's wire-outgoing breaker or section switch reclosing are behind fault zone, controlling fault zone front end
Substation's wire-outgoing breaker or section switch in post reclosing acceleration trip operation and be latched combined floodgate, and control fault zone
The section switch of rear end is latched after sending a telegram here in short-term and closes a floodgate, with isolated fault.
Fig. 6 is that substation's wire-outgoing breaker once weighs when trunk feeder short trouble occurs for power distribution network in the embodiment of the present invention
First section switch reclosing schematic diagram after combined floodgate, as shown, delay 1s carries out single shot reclosing after CB1 tripping, FS1 comes
Reclosing after the electric and 1s that is delayed, is sent to FS2 for electricity.
Fig. 7 is that section switch isolated fault signal after trunk feeder short trouble occurs for power distribution network in the embodiment of the present invention
Figure, as shown, FS2 sends a telegram here and reclosing after the 1s that is delayed, FS2 reclosing is in fault zone at this time, and section switch FS2 is in weight
Accelerated trip acts and is latched combined floodgate after combined floodgate.Since FS2 is latched rapidly combined floodgate, section switch FS3 is only received to send a telegram here in short-term,
FS3 locking in the case where sending a telegram here in short-term is closed a floodgate, to complete short trouble automatism isolation.
Fig. 8 is that non-faulting region restores electricity signal after trunk feeder short trouble occurs for power distribution network in the embodiment of the present invention
Figure, as shown, interconnection switch LS3 can be closed in the present embodiment by way of manually or remotely controlling, to restore non-
The power supply of fault zone.
2, trunk feeder ground fault is isolated
(1) it controls first section switch and detects tripping excision failure after fault current, so that remaining each segmentation open circuit
Device decompression separating brake.That is after first section switch tripping, first each section switch between section switch and fault zone
Successively decompression separating brake.
Figure 11 be the embodiment of the present invention in power distribution network occur trunk feeder ground fault Shi Shoutai section switch tripping, its
Remaining each section switch decompression separating brake schematic diagram, as shown, being connect between section switch FS2 and FS3 in the present embodiment
First section switch FS1 detects delay 20s tripping after fault current after earth fault, and section switch FS2 and FS3 successively lose
Press separating brake.
(2) it controls first section switch and carries out single shot reclosing, the coincidence so that remaining each section switch is successively sent a telegram here
Lock: when first section switch or remaining each section switch reclosing are behind the fault zone, fault zone front end is controlled
First section switch or remaining each section switch in post reclosing acceleration trip operation and be latched combined floodgate, and control failure
The section switch of region rear end is latched after sending a telegram here in short-term and closes a floodgate, with isolated fault.
Figure 12 is that section switch isolated fault is shown after power distribution network generation trunk feeder ground fault in the embodiment of the present invention
It is intended to, as shown, delay 1s carries out single shot reclosing, segmentation open circuit after first section switch FS1 tripping in the present embodiment
Reclosing after device FS2 incoming call delay 1s, since single-phase earthing electricity causes residual voltage to be more than threshold value, FS2 separating brake and is latched immediately
It closes a floodgate, simultaneously because FS2 is latched rapidly combined floodgate, section switch FS3 is only received to send a telegram here in short-term, and FS3 the case where sending a telegram here in short-term
Lower locking is closed a floodgate, to complete short trouble automatism isolation.
Figure 13 restores electricity for non-faulting region after power distribution network generation trunk feeder ground fault in the embodiment of the present invention to be shown
It is intended to, as shown, interconnection switch can be closed in the present embodiment in the present embodiment by way of manually or remotely controlling
LS3, to restore the power supply in non-faulting region.
Further, the present embodiment step S103 can be implemented as steps described below, specifically:
Trunk feeder branched line failure includes trunk feeder branched line short trouble and trunk feeder in the present embodiment
Branched line ground fault.
1, trunk feeder branched line short trouble is isolated
Control branch line breaker detects tripping excision failure after fault current, and reaches delay in the trip time and preset
Time after control branch line breaker carry out single shot reclosing: if failure be transient fault if restore electricity, if failure be forever
Long property failure then controls branch line breaker in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault.
Fig. 9 be the embodiment of the present invention in power distribution network occur trunk feeder branched line short trouble after branch line breaker every
From failure schematic diagram, as shown, short trouble, substation's wire-outgoing breaker occur for trunk feeder branched line in the present embodiment
CB1, section switch FS1, FS2 and branch line breaker FB1 are detected simultaneously by fault current, and section switch FS1, FS2 are only
Fault warning is carried out, branch line breaker FB1 detects delay 0.2s tripping after fault current, due to substation's wire-outgoing breaker
The work delay time of CB1 is that 0.5s therefore protect after branch line breaker FB1 tripping by the movement of substation wire-outgoing breaker CB1
Shield returns.Delay 1s carries out single shot reclosing after branch line breaker FB1 tripping, restores electricity if failure is transient fault,
Branch line breaker is controlled in post reclosing acceleration trip operation if failure is permanent fault and is latched combined floodgate, completes failure
Automatism isolation.
2, trunk feeder branched line ground fault is isolated
Control branch line breaker detects tripping excision failure after fault current, and reaches delay in the trip time and preset
Time after control branch line breaker carry out single shot reclosing: if failure be transient fault if restore electricity, if failure be forever
Long property failure then controls branch line breaker in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault.
Figure 14 is that branch line breaker after trunk feeder branched line ground fault occurs for power distribution network in the embodiment of the present invention
Isolated fault schematic diagram, as shown, ground fault, branch line breaker occur for trunk feeder branched line in the present embodiment
FB1 be delayed after detecting fault current 15s tripping, and the work delay time of section switch FS1 be 20s, therefore point
The action protection of section switch FS1 returns after branched breaker FB1 tripping.It is delayed after branch line breaker FB1 tripping default
Time after carry out single shot reclosing, if failure be transient fault if restore electricity, if failure be permanent fault control use
Family demarcation circuit breaker PB2 is in post reclosing acceleration trip operation and is latched combined floodgate, completes automatic fault isolation.
Further, the present embodiment step S104 can be implemented as steps described below, specifically:
Trunk feeder branch line user side line fault includes that trunk feeder branch line user side route is short in the present embodiment
Road failure and trunk feeder branch line user side line-to-ground fault.
1, trunk feeder branch line user side line short fault is isolated
Control user demarcation breaker detects tripping excision failure after fault current, and reaches delay in advance in the trip time
If time after control user demarcation breaker carry out single shot reclosing: if failure be transient fault if restore electricity, if failure
User demarcation breaker is then controlled for permanent fault in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault.
Figure 10 is that user after trunk feeder branch line user side line short fault occurs for power distribution network in the embodiment of the present invention
Demarcation circuit breaker isolated fault schematic diagram, as shown, short circuit occurs for trunk feeder branch line user side route in the present embodiment
Failure, substation wire-outgoing breaker CB1, section switch FS1, FS2, branch line breaker FB1 and user demarcation breaker PB2
It is detected simultaneously by fault current, section switch FS1, FS2 only carry out fault warning, and user demarcation breaker PB2 detects event
The i.e. work delay time of tripping immediately is 0s after hindering electric current, due to substation wire-outgoing breaker CB1's and branch line breaker FB1
Work delay time is all larger than the action delay time of user demarcation breaker, therefore the power transformation after user demarcation circuit breaker trip
The action protection of wire-outgoing breaker CB1 and branch line breaker FB1 of standing returns.It is delayed after user demarcation breaker PB2 tripping
Single shot reclosing is carried out after the preset time, is restored electricity if failure is transient fault, if failure is that permanent fault is controlled
User demarcation breaker PB2 processed is in post reclosing acceleration trip operation and is latched combined floodgate, completes automatic fault isolation.
2, trunk feeder branch line user side line-to-ground fault is isolated
Control user demarcation breaker detects tripping excision failure after fault current, and reaches delay in advance in the trip time
If time after control user demarcation breaker carry out single shot reclosing: if failure be transient fault if restore electricity, if failure
User demarcation breaker is then controlled for permanent fault in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault.
Figure 15 is that user after trunk feeder branch line user side line-to-ground fault occurs for power distribution network in the embodiment of the present invention
Demarcation circuit breaker isolated fault schematic diagram, as shown, trunk feeder branch line user side route is grounded in the present embodiment
Failure, user demarcation breaker PB1 detects delay 10s tripping after fault current, and the work of branch line breaker FB1 is delayed
Time is 15s, therefore the action protection of branch line breaker FB1 returns after family demarcation circuit breaker PB1 tripping.Family boundary open circuit
It is delayed after the preset time after device PB1 tripping and carries out single shot reclosing, restore electricity if failure is transient fault, if failure is
Permanent fault then controls user demarcation breaker PB1 in post reclosing acceleration trip operation and is latched combined floodgate, completes failure certainly
Dynamic isolation.
Formula failure separation method is overlapped on the spot when short trouble and ground fault occurs to power distribution network separately below to say
It is bright.
1, short trouble
Fig. 2 is short trouble partition method implementation flow chart in the embodiment of the present invention, as shown, when matching in the present embodiment
After short trouble occurs for the route of power grid, fault type, including trunk feeder short trouble, trunk feeder branch line are first determined whether
Road short trouble and trunk feeder branch line user side line short fault, are then individually insulated respectively according to step S102~S104
Short trouble.
2, ground fault
Fig. 3 is earth fault isolation method implementation flow chart in the embodiment of the present invention, as shown, when matching in the present embodiment
After ground fault occurs for the route of power grid, fault type, including trunk feeder ground fault, trunk feeder branch line are first determined whether
Road ground fault and trunk feeder branch line user side line-to-ground fault, are then individually insulated respectively according to step S102~S104
Ground fault.
It is overlapped formula fault isolation system on the spot the present invention also provides a kind of, and provides specific embodiment.
Being overlapped formula fault isolation system in the present embodiment on the spot includes fault type determining module, trunk feeder Fault Isolation
Module, trunk feeder branched line Fault Isolation module and trunk feeder branch line user side line fault isolation module.
Wherein: fault type determining module determines fault type, fault type packet for the fault zone according to power distribution network
Include trunk feeder failure, trunk feeder branched line failure and trunk feeder branch line user side line fault；Wherein: power distribution network
Middle trunk feeder connect with substation by substation's wire-outgoing breaker and multiple concatenated segmentations is arranged on the trunk feeder
Breaker, trunk feeder branched line are connect by branch line breaker with trunk feeder, trunk feeder branch line user's side line
Road is connect by user demarcation breaker with the trunk feeder branched line.
Trunk feeder Fault Isolation module, for controlling the first segmentation open circuit of substation's wire-outgoing breaker or trunk feeder
Device successively carries out tripping and single shot reclosing, and trunk feeder failure is isolated.
Trunk feeder branched line Fault Isolation module, the action delay time for setting branch line breaker are distinguished small
In the action delay time of substation's wire-outgoing breaker and section switch, and control branch line breaker successively carry out tripping and
Trunk feeder branched line failure is isolated in single shot reclosing.
Trunk feeder branch line user side line fault isolation module, for setting the action delay of user demarcation breaker
Time is respectively smaller than the action delay time of substation's wire-outgoing breaker, section switch and branch line breaker, and controls use
Family demarcation circuit breaker successively carries out tripping and single shot reclosing, and trunk feeder branch line user side line fault is isolated.
Trunk feeder Fault Isolation module is detecting failure electricity by control substation's wire-outgoing breaker in the present embodiment
Tripping and single shot reclosing are successively carried out after stream, can be effectively isolated trunk feeder failure；Trunk feeder branched line failure every
From module by the action delay time difference of setting substation's wire-outgoing breaker and section switch, and control branch line breaker
Tripping and single shot reclosing are successively carried out, trunk feeder branched line failure is can isolate, reduces substation's wire-outgoing breaker
Tripping times, further reduced the service restoration time in Fault Isolation time and non-faulting region；Trunk feeder branch line
User side line fault isolation module by setting substation's wire-outgoing breaker, section switch and user demarcation breaker when
Between it is poor, and control user demarcation breaker successively carry out tripping and single shot reclosing, can isolate trunk feeder branch line user
Side line fault reduces the tripping times of substation's wire-outgoing breaker, has further reduced Fault Isolation time and non-faulting
The service restoration time in region.
Further, in this embodiment trunk feeder Fault Isolation module can also include following structures, specifically:
1, trunk feeder short trouble isolated location
Trunk feeder short trouble isolated location includes the first control subelement and the second control subelement in the present embodiment.
First control subelement detects the failure electricity of trunk feeder short trouble for controlling substation's wire-outgoing breaker
Tripping excision failure after stream, so that each section switch decompression separating brake in trunk feeder.
Second control subelement carries out single shot reclosing for controlling substation's wire-outgoing breaker, so that in trunk feeder
Each section switch is successively sent a telegram here reclosing: when substation's wire-outgoing breaker or section switch reclosing are behind fault zone,
The substation's wire-outgoing breaker or section switch for controlling fault zone front end are in post reclosing acceleration trip operation and closed bite
Lock, and the section switch for controlling fault zone rear end is latched after sending a telegram here in short-term and closes a floodgate, with isolated fault.
2, trunk feeder ground fault isolated location
Trunk feeder ground fault isolated location includes third control subelement and the 4th control subelement in the present embodiment.
Wherein: third controls subelement, and the event of trunk feeder ground fault is detected for controlling first section switch
Tripping cuts off failure after hindering electric current, so that remaining each section switch decompression separating brake.
4th control subelement carries out single shot reclosing for controlling first section switch, so that remaining each segmentation is disconnected
Road device is successively sent a telegram here reclosing: when first section switch or remaining each section switch reclosing are behind fault zone, control
The first section switch or remaining each section switch of fault zone front end are in post reclosing acceleration trip operation and closed bite
Lock, and the section switch for controlling fault zone rear end is latched after sending a telegram here in short-term and closes a floodgate, with isolated fault.
Further, in this embodiment trunk feeder branched line Fault Isolation module can also include following structures, tool
Body are as follows:
1, trunk feeder branched line short trouble isolated location
Trunk feeder branched line short trouble isolated location in the present embodiment is detected for controlling branch line breaker
After the fault current of trunk feeder branched line short trouble tripping excision failure, and the trip time reach delay it is preset when
Between after the control branch line breaker carry out single shot reclosing: restore electricity if failure is transient fault, if failure is forever
Long property failure then controls branch line breaker in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault.
2, trunk feeder branched line ground fault isolated location
Trunk feeder branched line ground fault isolated location in the present embodiment is detected for controlling branch line breaker
After the fault current of trunk feeder branched line ground fault tripping excision failure, and the trip time reach delay it is preset when
Between after control branch line breaker carry out single shot reclosing: if failure be transient fault if restore electricity, if failure is permanent
Failure then controls branch line breaker in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault.
Further, in this embodiment trunk feeder branch line user side line fault isolation module can also include following
Structure, specifically:
1, trunk feeder branch line user side line short fault isolated location
Trunk feeder branch line user side line short fault isolated location in the present embodiment, it is disconnected for controlling user demarcation
Road device detects tripping excision failure after the fault current of trunk feeder branch line user side line short fault, and in tripping
Between reach delay preset time after control user demarcation breaker carry out single shot reclosing: restore if failure is transient fault
Power supply controls user demarcation breaker in post reclosing acceleration trip operation if failure is permanent fault and is latched combined floodgate,
With isolated fault.
2, trunk feeder branch line user side line-to-ground fault isolated location
Trunk feeder branch line user side line-to-ground fault isolated location in the present embodiment, it is disconnected for controlling user demarcation
Road device detects tripping excision failure after the fault current of trunk feeder branch line user side line-to-ground fault, and in tripping
Between reach delay preset time after control user demarcation breaker carry out single shot reclosing: restore if failure is transient fault
Power supply controls user demarcation breaker in post reclosing acceleration trip operation if failure is permanent fault and is latched combined floodgate,
With isolated fault.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of be overlapped formula failure separation method on the spot, which is characterized in that the described method includes:
Fault zone according to power distribution network determines that fault type, the fault type include trunk feeder failure, trunk feeder point
Branch line failure and trunk feeder branch line user side line fault；Wherein: trunk feeder passes through substation in the power distribution network
Wire-outgoing breaker connect with substation and multiple concatenated section switches, trunk feeder branch line is arranged on the trunk feeder
Road is connect by branch line breaker with the trunk feeder, and trunk feeder branch line user side route passes through user demarcation open circuit
Device is connect with the trunk feeder branched line；
First section switch for controlling substation's wire-outgoing breaker or the trunk feeder successively carries out tripping and primary
The trunk feeder failure is isolated in reclosing；
The action delay time for setting the branch line breaker is respectively smaller than substation's wire-outgoing breaker and segmentation open circuit
The action delay time of device, and control the branch line breaker and successively carry out tripping and single shot reclosing, the trunk is isolated
Feeder branch line fault；
The action delay time for setting the user demarcation breaker is respectively smaller than substation's wire-outgoing breaker, segmentation open circuit
The action delay time of device and branch line breaker, and control the user demarcation breaker and successively carry out tripping and primary coincidence
The trunk feeder branch line user side line fault is isolated in lock；
The trunk feeder failure includes trunk feeder short trouble, and the isolation trunk feeder failure includes:
It controls substation's wire-outgoing breaker and detects tripping excision failure after fault current, so that each in the trunk feeder
Section switch decompression separating brake；
It controls substation's wire-outgoing breaker and carries out single shot reclosing, so that each section switch is successively in the trunk feeder
Incoming call reclosing: when substation's wire-outgoing breaker or section switch reclosing are behind the fault zone, described in control
The substation's wire-outgoing breaker or section switch of fault zone front end are in post reclosing acceleration trip operation and are latched combined floodgate, and
The section switch for controlling the fault zone rear end is latched after sending a telegram here in short-term to close a floodgate, with isolated fault.
2. a kind of coincidence formula failure separation method on the spot as described in claim 1, which is characterized in that the trunk feeder failure
Including trunk feeder ground fault, the isolation trunk feeder failure includes:
It controls the first section switch and detects tripping excision failure after fault current, so that remaining each section switch loses
Press separating brake；
It controls the first section switch and carries out single shot reclosing, the weight so that each section switch of remaining described is successively sent a telegram here
It closes a floodgate: when the first section switch or each section switch reclosing of remaining described are behind the fault zone, control
The first section switch or each section switch of remaining described of the fault zone front end are dynamic in post reclosing acceleration tripping
The section switch made and be latched combined floodgate, and control the fault zone rear end is latched after sending a telegram here in short-term to close a floodgate, event is isolated
Barrier.
3. a kind of coincidence formula failure separation method on the spot as described in claim 1, which is characterized in that the trunk feeder branch
Line fault includes trunk feeder branched line short trouble and trunk feeder branched line ground fault；The isolation trunk feedback
Line branched line failure includes:
It controls the branch line breaker and detects tripping excision failure after fault current, and reach delay in the trip time and preset
Time after control the branch line breaker and carry out single shot reclosing: restore electricity if the failure is transient fault, if
The failure is that permanent fault then controls branch line breaker in post reclosing acceleration trip operation and is latched combined floodgate, with isolation
Failure.
4. a kind of coincidence formula failure separation method on the spot as described in claim 1, which is characterized in that the trunk feeder branch
Line user side line fault includes trunk feeder branch line user side line short fault and trunk feeder branch line user's side line
Road ground fault；The isolation trunk feeder branch line user side line fault includes: the control user demarcation breaker inspection
Tripping cuts off failure after measuring fault current, and controls the user demarcation after the trip time reaches the delay preset time and break
Road device carries out single shot reclosing: restoring electricity if the failure is transient fault, if the failure is that permanent fault is controlled
User demarcation breaker processed is in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault.
5. a kind of system described in claim 1 for being overlapped formula failure separation method on the spot and using, which is characterized in that the system
Include:
Fault type determining module determines that fault type, the fault type include master for the fault zone according to power distribution network
Dry feeder fault, trunk feeder branched line failure and trunk feeder branch line user side line fault；Wherein: the power distribution network
Middle trunk feeder connect with substation by substation's wire-outgoing breaker and multiple concatenated segmentations is arranged on the trunk feeder
Breaker, trunk feeder branched line are connect by branch line breaker with the trunk feeder, trunk feeder branch line user
Side line road is connect by user demarcation breaker with the trunk feeder branched line；
Trunk feeder Fault Isolation module, for controlling first segmentation of substation's wire-outgoing breaker or the trunk feeder
Breaker successively carries out tripping and single shot reclosing, and the trunk feeder failure is isolated；
Trunk feeder branched line Fault Isolation module, the action delay time for setting the branch line breaker are distinguished small
In the action delay time of substation's wire-outgoing breaker and section switch, and control the branch line breaker successively into
Row tripping and single shot reclosing, are isolated the trunk feeder branched line failure；
Trunk feeder branch line user side line fault isolation module, for setting the action delay of the user demarcation breaker
Time is respectively smaller than the action delay time of substation's wire-outgoing breaker, section switch and branch line breaker, and controls
It makes the user demarcation breaker and successively carries out tripping and single shot reclosing, the trunk feeder branch line user side route is isolated
Failure.
6. system as claimed in claim 5, which is characterized in that the trunk feeder Fault Isolation module includes that trunk feeder is short
Road Fault Isolation unit；The trunk feeder short trouble isolated location includes that the first control subelement and the second control are single
Member；
The first control subelement, the event of trunk feeder short trouble is detected for controlling substation's wire-outgoing breaker
Tripping cuts off failure after hindering electric current, so that each section switch decompression separating brake in the trunk feeder；
The second control subelement carries out single shot reclosing for controlling substation's wire-outgoing breaker, so that the master
Each section switch is successively sent a telegram here reclosing in dry feeder line: when substation's wire-outgoing breaker or section switch reclosing in
Behind the fault zone, the substation's wire-outgoing breaker or section switch for controlling the fault zone front end add after reclosing
Fast trip operation is simultaneously latched combined floodgate, and the section switch for controlling the fault zone rear end is latched after sending a telegram here in short-term and closes a floodgate,
With isolated fault.
7. system as claimed in claim 5, which is characterized in that the trunk feeder Fault Isolation module includes that trunk feeder connects
Earth fault isolated location；The trunk feeder ground fault isolated location includes that third control subelement and the 4th control are single
Member；
The third controls subelement, and the failure of trunk feeder ground fault is detected for controlling the first section switch
Tripping excision failure after electric current, so that remaining each section switch decompression separating brake；
The 4th control subelement carries out single shot reclosing for controlling the first section switch, so that its described
Remaining each section switch is successively sent a telegram here reclosing: when the first section switch or each section switch of remaining described are overlapped
Lock controls first section switch or remaining the described respectively segmentation open circuit of the fault zone front end behind the fault zone
Device is in post reclosing acceleration trip operation and is latched combined floodgate, and the section switch for controlling the fault zone rear end comes in short-term
It is latched and closes a floodgate after electricity, with isolated fault.
8. system as claimed in claim 5, which is characterized in that the trunk feeder branched line Fault Isolation module includes master
Dry feeder branch line short fault isolated location and trunk feeder branched line ground fault isolated location；
The trunk feeder branched line short trouble isolated location detects that trunk is presented for controlling the branch line breaker
Tripping excision failure after the fault current of line branched line short trouble, and controlled after the trip time reaches the delay preset time
It makes the branch line breaker and carries out single shot reclosing: restoring electricity if the failure is transient fault, if the failure is
Permanent fault then controls branch line breaker in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault；
The trunk feeder branched line ground fault isolated location detects that trunk is presented for controlling the branch line breaker
Tripping excision failure after the fault current of line branched line ground fault, and controlled after the trip time reaches the delay preset time
It makes the branch line breaker and carries out single shot reclosing: restoring electricity if the failure is transient fault, if the failure is
Permanent fault then controls branch line breaker in post reclosing acceleration trip operation and is latched combined floodgate, with isolated fault.
9. system as claimed in claim 5, which is characterized in that the trunk feeder branch line user side line fault isolation mode
Block includes trunk feeder branch line user side line short fault isolated location and trunk feeder branch line user side line-to-ground
Fault Isolation unit；
The trunk feeder branch line user side line short fault isolated location, for controlling the user demarcation breaker inspection
Tripping cuts off failure after measuring the fault current of trunk feeder branch line user side line short fault, and reaches in the trip time
It is delayed after the preset time and controls the user demarcation breaker and carry out single shot reclosing: is extensive if the failure is transient fault
Multiple power supply controls user demarcation breaker in post reclosing acceleration trip operation if the failure is permanent fault and is latched
It closes a floodgate, with isolated fault；
The trunk feeder branch line user side line-to-ground fault isolated location, for controlling the user demarcation breaker inspection
Tripping cuts off failure after measuring the fault current of trunk feeder branch line user side line-to-ground fault, and reaches in the trip time
It is delayed after the preset time and controls the user demarcation breaker and carry out single shot reclosing: is extensive if the failure is transient fault
Multiple power supply controls user demarcation breaker in post reclosing acceleration trip operation if the failure is permanent fault and is latched
It closes a floodgate, with isolated fault.
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| CN201710029620.1A CN106786425B (en) | 2017-01-16 | 2017-01-16 | It is a kind of to be overlapped formula failure separation method and system on the spot |
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| CN201710029620.1A CN106786425B (en) | 2017-01-16 | 2017-01-16 | It is a kind of to be overlapped formula failure separation method and system on the spot |
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| CN107465177B (en) * | 2017-10-11 | 2019-08-27 | 山东理工大学 | A kind of power distribution network small current grounding fault partition method based on regional agency |
| CN108054739B (en) * | 2017-12-18 | 2019-05-28 | 广东电网有限责任公司珠海供电局 | A kind of overhead transmission line feeder automation method and system based on negative-sequence current |
| CN108448545B (en) * | 2018-04-12 | 2019-05-03 | 国网湖北省电力有限公司电力科学研究院 | A kind of formula feeder automation fault handling method of coincidence on the spot based on breaker |
| CN109473955B (en) * | 2018-11-14 | 2020-04-14 | 珠海许继电气有限公司 | Self-adaptive distribution line fault processing method based on circuit breaker |
| CN109256757B (en) * | 2018-11-26 | 2020-04-07 | 国网山东省电力公司电力科学研究院 | Automatic isolation and reclosing scheme for single-phase earth fault of low-current grounding system |
| CN111244879B (en) * | 2018-11-29 | 2024-05-14 | 中国电力科学研究院有限公司 | X-limit setting method and system for in-situ feeder automation terminal |
| CN110048384B (en) * | 2019-05-14 | 2021-05-25 | 国网北京市电力公司 | High-reliability self-healing method and system for distribution network |
| CN110556801B (en) * | 2019-09-11 | 2021-07-20 | 云南电力技术有限责任公司 | Power distribution automation FTU locking protection method |
| CN111884192B (en) * | 2020-05-25 | 2021-05-14 | 南方电网科学研究院有限责任公司 | Method, device and system for controlling line faults of power distribution network |
| CN111525525B (en) * | 2020-06-05 | 2022-07-12 | 国网山东省电力公司营销服务中心(计量中心) | Method and equipment for recovering power supply of downstream non-fault section with ground fault |
| CN111781465A (en) * | 2020-06-28 | 2020-10-16 | 云南电网有限责任公司电力科学研究院 | Fault positioning system and method for ungrounded power grid |
| CN111884184B (en) * | 2020-07-30 | 2022-10-04 | 国网重庆市电力公司电力科学研究院 | New energy access local type feeder control method and system |
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