CN106786425A - A kind of coincidence formula failure separation method and system on the spot - Google Patents
A kind of coincidence formula failure separation method and system on the spot Download PDFInfo
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- CN106786425A CN106786425A CN201710029620.1A CN201710029620A CN106786425A CN 106786425 A CN106786425 A CN 106786425A CN 201710029620 A CN201710029620 A CN 201710029620A CN 106786425 A CN106786425 A CN 106786425A
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- fault
- breaker
- failure
- trunk feeder
- branch line
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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
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- 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
The invention provides a kind of coincidence formula failure separation method and system on the spot, methods described includes that control transformer station's wire-outgoing breaker or first section switch of trunk feeder are tripped and single shot reclosing successively, isolates trunk feeder failure；The action delay time for setting branch line breaker is respectively smaller than the action delay time of transformer station's wire-outgoing breaker and section switch, and controls branch line breaker to be tripped successively and single shot reclosing, isolates trunk feeder branched line failure；The action delay time for setting user demarcation breaker is respectively smaller than the action delay time of transformer station's wire-outgoing breaker, section switch and branch line breaker, and controls.Compared with prior art, the present invention is provided a kind of coincidence formula failure separation method and system on the spot, it is possible to reduce the tripping times of transformer station's wire-outgoing breaker, further reduce 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 field of line fault, and in particular to a kind of coincidence formula failure on the spot
Partition method and system.
Background technology
Formula FEEDER AUTOMATION refers to, when power distribution network breaks down, being independent of the control of distribution main website 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 processing procedure and result.At present, formula feeder automation scheme mainly includes intelligent distribution type feeder automation on the spot
With coincidence formula feeder automation, the feeder automation of coincidence formula includes branch boundary type, voltage-time type and voltage x current time type
Etc. the feeder automation of type.Branch boundary type, voltage-time type and voltage x 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 schemes：One is to be based on the means of relay protection and utilize level
It is poor to coordinate the short circuit of quick excision branch line and earth fault, generally in transformer station's outlet switch, big branch's head end switch, Yong Hufen
Branch switchgear distribution three-level is differential.Two is the load configured by branch line head end or boundary in the case where differential deficiency is protected
Switch and quickly isolate Failure And Recovery using feeder automation logical sum single shot reclosing of demarcating and completely power.Branch's boundary type
Feeder automation is not used alone generally, can apply and cooperate simultaneously with other kinds of feeder automation.
(2) voltage-time type feeder automation
The technical scheme of voltage-time type feeder automation mainly uses " decompression separating brake, the incoming call time-delay closing " of switch
Function, and be engaged with transformer station outlet switch reclosing by criterion of voltage and time, by the logic of terminal device itself
Arbitration functions, the interval power supply of automatic separating fault, recovery non-faulting, and voltage-time type feeder automation is in practical application
May need to coordinate multiple shot reclosing, fault handling time is more long.
(3) voltage x current time type feeder automation
The technical scheme of voltage x current time type feeder automation mainly uses the multiple weight in transformer station's outlet switch
Decompression number of times and excessively stream number of times are remembered in making process, is realized that fault section isolation and non-faulting are interval and is restored electricity.Wherein,
Single shot reclosing can recognize transient fault, and secondary reclosing can position fault section and isolated fault is interval, three weights
Combined floodgate can recover the interval power supply of non-faulting of trouble point front end, and fault handling time is more long.
The content of the invention
In order to overcome the defect of prior art, the invention provides a kind of coincidence formula failure separation method and system on the spot.
In a first aspect, a kind of technical scheme of the formula failure separation method of coincidence on the spot is in the present invention：
Methods described includes：
Determine fault type according to the fault zone of power distribution network, the fault type includes that trunk feeder failure, trunk are presented
Line branched line failure and trunk feeder branch line user side line fault；Wherein：Trunk feeder is by becoming in the power distribution network
Power station wire-outgoing breaker is connected with transformer station and the section switch of multiple series connection, trunk feeder point is set on the trunk feeder
Branch line is connected by branch line breaker with the trunk feeder, and trunk feeder branch line user side circuit passes through user demarcation
Breaker is connected with the trunk feeder branched line；
Control transformer station's wire-outgoing breaker or the trunk feeder first section switch carry out successively tripping operation and
Single shot reclosing, isolates the trunk feeder failure；
The action delay time for setting the branch line breaker is respectively smaller than transformer station's wire-outgoing breaker and segmentation
The action delay time of breaker, and control the branch line breaker to be tripped successively and single shot reclosing, isolation is described
Trunk feeder branched line failure；
The action delay time for setting the user demarcation breaker is respectively smaller than transformer station's wire-outgoing breaker, segmentation
The action delay time of breaker and branch line breaker, and control the user demarcation breaker carry out successively tripping operation and once
Reclosing, isolates the trunk feeder branch line user side line fault.
Second aspect, a kind of technical scheme of the formula fault isolation system of coincidence on the spot is in the present invention：
The system includes：
Fault type determining module, fault type, the fault type bag are determined 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：It is described to match somebody with somebody
Trunk feeder is connected with transformer station by transformer station's wire-outgoing breaker and multiple series connection is set on the trunk feeder in power network
Section switch, trunk feeder branched line is connected by branch line breaker with the trunk feeder, trunk feeder branch line
User side circuit is connected by user demarcation breaker with the trunk feeder branched line；
Trunk feeder Fault Isolation module, first for controlling transformer station's wire-outgoing breaker or the trunk feeder
Section switch is tripped and single shot reclosing successively, isolates the trunk feeder failure；
Trunk feeder branched line Fault Isolation module, the action delay time point for setting the branch line breaker
Not little Yu transformer station's wire-outgoing breaker and section switch the action delay time, and control the branch line breaker according to
It is secondary to be tripped and single shot reclosing, isolate the trunk feeder branched line failure；
Trunk feeder branch line user side line fault isolation module, the action for setting the user demarcation breaker
Delay time is respectively smaller than the action delay time of transformer station's wire-outgoing breaker, section switch and branch line breaker,
And control the user demarcation breaker to be tripped successively and single shot reclosing, isolate the trunk feeder branch line user side
Line fault.
Compared with immediate prior art, the beneficial effects of the invention are as follows：
1st, a kind of coincidence formula failure separation method on the spot that the present invention is provided, by controlling transformer station's wire-outgoing breaker in inspection
Tripped successively and single shot reclosing after measuring fault current, trunk feeder failure can be effectively isolated；By setting power transformation
Stand action delay time difference of wire-outgoing breaker and section switch, and control the branch line breaker to carry out tripping operation and once successively
Reclosing, can isolate trunk feeder branched line failure, reduce the tripping times of transformer station's wire-outgoing breaker, further contracting
The small service restoration time of Fault Isolation time and non-faulting region；By setting transformer station's wire-outgoing breaker, segmentation open circuit
Time difference of device and user demarcation breaker, and control user demarcation breaker to be tripped successively and single shot reclosing, can be with
Isolation trunk feeder branch line user side line fault, reduces the tripping times of transformer station's wire-outgoing breaker, further reduces
Service restoration time of Fault Isolation time and non-faulting region；
2nd, a kind of coincidence formula fault isolation system on the spot that the present invention is provided, trunk feeder Fault Isolation module is by control
Transformer station's wire-outgoing breaker is tripped and single shot reclosing successively after fault current is detected, and can be effectively isolated trunk feedback
Line failure；Trunk feeder branched line Fault Isolation module is by setting the action of transformer station's wire-outgoing breaker and section switch
Delay time is poor, and controls branch line breaker to be tripped successively and single shot reclosing, can isolate trunk feeder branch line
Road failure, reduces the tripping times of transformer station's wire-outgoing breaker, further reduces Fault Isolation time and non-faulting region
The service restoration time；Trunk feeder branch line user side line fault isolation module by set transformer station's wire-outgoing breaker,
The time difference of section switch and user demarcation breaker, and control user demarcation breaker carry out successively tripping operation and once overlap
Lock, can isolate trunk feeder branch line user side line fault, reduce the tripping times of transformer station's wire-outgoing breaker, enter one
Step reduces the service restoration time in Fault Isolation time and non-faulting region.
Brief description of the drawings
Fig. 1：A kind of coincidence formula failure separation method implementing procedure figure on the spot in the embodiment of the present invention；
Fig. 2：Short trouble partition method implementing procedure figure in the embodiment of the present invention；
Fig. 3：Earth fault isolation method implementing procedure figure 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：In the embodiment of the present invention there is transformer station's wire-outgoing breaker tripping operation during trunk feeder short trouble, divide in power distribution network
Section breaker decompression separating brake schematic diagram；
Fig. 6：Transformer station's wire-outgoing breaker is once weighed when power distribution network occurs trunk feeder short trouble 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 power distribution network occurs trunk feeder short trouble in the embodiment of the present invention
Figure；
Fig. 8：Non-faulting region restores electricity signal after power distribution network occurs trunk feeder short trouble 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：In the embodiment of the present invention there is user point after trunk feeder branch line user side line short fault in power distribution network
Boundary's breaker isolated fault schematic diagram；
Figure 11：In the embodiment of the present invention power distribution network occur first section switch tripping operation during trunk feeder earth fault, its
Remaining each section switch decompression separating brake schematic diagram；
Figure 12：Section switch isolated fault is illustrated after power distribution network occurs trunk feeder earth fault in the embodiment of the present invention
Figure；
Figure 13：Non-faulting region restores electricity signal after power distribution network occurs trunk feeder earth fault 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 earth fault after branch line breaker every
From failure schematic diagram；
Figure 15：In the embodiment of the present invention there is user point after trunk feeder branch line user side line-to-ground fault in power distribution network
Boundary's breaker isolated fault schematic diagram.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely illustrated, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Separately below with reference to accompanying drawing, a kind of coincidence formula failure separation method on the spot provided in an embodiment of the present invention is said
It is bright.
Fig. 1 is a kind of coincidence formula failure separation method implementing procedure figure on the spot in the embodiment of the present invention, as illustrated, this reality
Apply and overlap on the spot in example formula failure separation method and can implement as steps described below, specially：
Step S101：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 connected and trunk by transformer station's wire-outgoing breaker with transformer station in power distribution network
The section switch of multiple series connection is set on feeder line, and trunk feeder branched line is connected by branch line breaker with trunk feeder
Connect, trunk feeder branch line user side circuit is connected 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 illustrated, transformer station's outlet open circuit
Be provided with a trunk feeder of 10kV between device CB1 and CB2, trunk feeder include the section switch FS1 of series connection, 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 circuit is presented by user demarcation breaker PB1 with trunk
Line branched line is connected, and another trunk feeder branch line user side circuit passes through user demarcation breaker PB2 and trunk feeder
Branched line is connected.Wherein：Section switch FS1 is first section switch of trunk feeder.
Step S102：Control transformer station's wire-outgoing breaker or trunk feeder first section switch carry out successively tripping operation and
Single shot reclosing, isolates trunk feeder failure.
Step S103：The action delay time for setting branch line breaker is respectively smaller than transformer station's wire-outgoing breaker and segmentation
The action delay time of breaker, and control branch line breaker to be tripped successively and single shot reclosing, isolate trunk feeder
Branched line failure.
Step S104：The action delay time for setting user demarcation breaker is respectively smaller than transformer station's wire-outgoing breaker, divides
Section breaker and branch line breaker the action delay time, and control user demarcation breaker carry out successively tripping operation and once weigh
Close a floodgate, isolate trunk feeder branch line user side line fault.
In the present embodiment tripping operation and one are carried out successively after fault current is detected by controlling transformer station's wire-outgoing breaker
Secondary reclosing, can be effectively isolated trunk feeder failure；By the action for setting transformer station's wire-outgoing breaker and section switch
Delay time is poor, and controls branch line breaker to be tripped successively and single shot reclosing, can isolate trunk feeder branch line
Road failure, reduces the tripping times of transformer station's wire-outgoing breaker, further reduces Fault Isolation time and non-faulting region
The service restoration time；By setting the time difference of transformer station's wire-outgoing breaker, section switch and user demarcation breaker, and
Control user demarcation breaker is tripped and single shot reclosing successively, can isolate the event of trunk feeder branch line user side circuit
Barrier, reduces the tripping times of transformer station's wire-outgoing breaker, further reduces the confession in Fault Isolation time and non-faulting region
Electric recovery time.
Further, the present embodiment step S102 can be implemented as steps described below, specially：
1st, trunk feeder short trouble is isolated
(1) control transformer station wire-outgoing breaker detects tripping operation excision failure after fault current so that each in trunk feeder
Section switch decompression separating brake.I.e. after the tripping operation of transformer station's wire-outgoing breaker, between transformer station's wire-outgoing breaker and fault zone
Each section switch decompression separating brake successively.
Fig. 5 be in the embodiment of the present invention power distribution network occur transformer station wire-outgoing breaker tripping operation during trunk feeder short trouble,
Section switch decompression separating brake schematic diagram, as illustrated, transformer station after the failure that is short-circuited between section switch FS2 and FS3
Wire-outgoing breaker CB1, section switch FS1 and FS2 detect fault current, and FS1 and FS2 only give a warning, CB1 time delays
Tripped after 0.5s, section switch FS1, FS2, FS3 decompression separating brake successively.
(2) control transformer station wire-outgoing breaker carries out single shot reclosing so that each section switch is successively in trunk feeder
Incoming call reclosing：After transformer station's wire-outgoing breaker or section switch reclosing are in fault zone, fault zone front end is controlled
Transformer station's wire-outgoing breaker or section switch closed a floodgate in post reclosing acceleration trip operation and locking, and control fault zone
The locking after sending a telegram here in short-term of the section switch of rear end is closed a floodgate, with isolated fault.
Fig. 6 is for transformer station's wire-outgoing breaker is once weighed during power distribution network generation trunk feeder short trouble in the embodiment of the present invention
First section switch reclosing schematic diagram after combined floodgate, as illustrated, time delay 1s carries out single shot reclosing after CB1 tripping operations, FS1 comes
Reclosing after electricity and time delay 1s, FS2 is sent to by electricity.
Fig. 7 is section switch isolated fault signal after power distribution network generation trunk feeder short trouble in the embodiment of the present invention
Figure, as illustrated, reclosing after FS2 incoming calls and time delay 1s, now, in fault zone, section switch FS2 is in weight for FS2 reclosings
Accelerated trip action and locking combined floodgate after combined floodgate.Because the rapid lockings of FS2 are closed a floodgate, section switch FS3 is only received and sent a telegram here in short-term,
FS3 lockings in the case where sending a telegram here in short-term are closed a floodgate, so as to complete short trouble automatism isolation.
Fig. 8 is that non-faulting region restores electricity signal after power distribution network occurs trunk feeder short trouble in the embodiment of the present invention
Figure, as illustrated, interconnection switch LS3 can be closed in the present embodiment by way of manually or remotely controlling, so as to recover non-
The power supply of fault zone.
2nd, trunk feeder earth fault is isolated
(1) first section switch is controlled to detect tripping operation excision failure after fault current so that remaining each segmentation open circuit
Device decompression separating brake.After i.e. first section switch tripping operation, the first each section switch between section switch and fault zone
Decompression separating brake successively.
Figure 11 be in the embodiment of the present invention power distribution network occur first section switch tripping operation during trunk feeder earth fault, its
Remaining each section switch decompression separating brake schematic diagram, as illustrated, being connect between section switch FS2 and FS3 in the present embodiment
First section switch FS1 detects time delay 20s tripping operations after fault current after earth fault, and section switch FS2 and FS3 lose successively
Pressure separating brake.
(2) controlling first section switch carries out single shot reclosing so that remaining each section switch is sent a telegram here coincidence successively
Lock：After first section switch or remaining each section switch reclosing are in the fault zone, fault zone front end is controlled
First section switch or remaining each section switch closed a floodgate in post reclosing acceleration trip operation and locking, and control failure
The locking after sending a telegram here in short-term of the section switch of region rear end is closed a floodgate, with isolated fault.
Figure 12 be the embodiment of the present invention in power distribution network occur trunk feeder earth fault after section switch isolated fault show
It is intended to, as illustrated, time delay 1s carries out single shot reclosing, segmentation open circuit after first section switch FS1 tripping operation in the present embodiment
Reclosing after device FS2 incoming call time delays 1s, because single-phase earthing electricity causes residual voltage to exceed threshold value, FS2 separating brake and lockings immediately
Close a floodgate, simultaneously because the rapid lockings of FS2 are closed a floodgate, section switch FS3 is only received and sent a telegram here in short-term, and FS3 is in situation about sending a telegram here in short-term
Lower locking is closed a floodgate, so as to complete short trouble automatism isolation.
Figure 13 is that non-faulting region restores electricity and shows after power distribution network occurs trunk feeder earth fault in the embodiment of the present invention
It is intended to, as illustrated, interconnection switch can be closed in the present embodiment in the present embodiment by way of manually or remotely controlling
LS3, so as to recover the power supply in non-faulting region.
Further, the present embodiment step S103 can be implemented as steps described below, specially：
Trunk feeder branched line failure includes trunk feeder branched line short trouble and trunk feeder in the present embodiment
Branched line earth fault.
1st, trunk feeder branched line short trouble is isolated
Control branch line breaker detects tripping operation excision failure after fault current, and it is default to reach time delay in the trip time
Time after control branch line breaker carry out single shot reclosing：Restored electricity if failure is transient fault, if failure is for forever
Long property failure then controls branch line breaker in post reclosing acceleration trip operation and locking 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 illustrated, trunk feeder branched line is short-circuited failure, transformer station's wire-outgoing breaker 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 time delay 0.2s tripping operations after fault current, due to transformer station's wire-outgoing breaker
The work delay time of CB1 is that 0.5s therefore protect after branch line breaker FB1 tripping operations by the action of transformer station's wire-outgoing breaker CB1
Shield is returned.Time delay 1s carries out single shot reclosing after branch line breaker FB1 tripping operations, is restored electricity if failure is transient fault,
Control branch line breaker in post reclosing acceleration trip operation and locking combined floodgate if failure is permanent fault, complete failure
Automatism isolation.
2nd, trunk feeder branched line earth fault is isolated
Control branch line breaker detects tripping operation excision failure after fault current, and it is default to reach time delay in the trip time
Time after control branch line breaker carry out single shot reclosing：Restored electricity if failure is transient fault, if failure is for forever
Long property failure then controls branch line breaker in post reclosing acceleration trip operation and locking combined floodgate, with isolated fault.
Figure 14 is branch line breaker after power distribution network generation trunk feeder branched line earth fault in the embodiment of the present invention
Isolated fault schematic diagram, as illustrated, trunk feeder branched line occurs earth fault, branch line breaker in the present embodiment
FB1 time delay 15s tripping operations after fault current is detected, and the work delay time of section switch FS1 is 20s, therefore dividing
The action protection of section switch FS1 is returned after branched breaker FB1 tripping operations.Time delay is preset after branch line breaker FB1 tripping operations
Time after carry out single shot reclosing, if failure be transient fault if restore electricity, if failure be permanent fault if control use
Family demarcation circuit breaker PB2 completes automatic fault isolation in post reclosing acceleration trip operation and locking combined floodgate.
Further, the present embodiment step S104 can be implemented as steps described below, specially：
Trunk feeder branch line user side line fault includes that trunk feeder branch line user side circuit is short in the present embodiment
Road failure and trunk feeder branch line user side line-to-ground fault.
1st, trunk feeder branch line user side line short fault is isolated
Control user demarcation breaker detects tripping operation excision failure after fault current, and it is pre- to reach time delay in the trip time
If time after control user demarcation breaker carry out single shot reclosing：Restored electricity if failure is transient fault, if failure
User demarcation breaker is then controlled for permanent fault in post reclosing acceleration trip operation and locking combined floodgate, with isolated fault.
Figure 10 is user after power distribution network generation trunk feeder branch line user side line short fault in the embodiment of the present invention
Demarcation circuit breaker isolated fault schematic diagram, as illustrated, trunk feeder branch line user side circuit is short-circuited in the present embodiment
Failure, transformer station wire-outgoing breaker CB1, section switch FS1, FS2, branch line breaker FB1 and user demarcation breaker PB2
Fault current is detected simultaneously by, section switch FS1, FS2 only carry out fault warning, and user demarcation breaker PB2 detects event
The i.e. work delay time of tripping operation immediately is 0s after barrier electric current, due to transformer station wire-outgoing breaker CB1's and branch line breaker FB1
Work delay time is all higher 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 is returned.Time delay after user demarcation breaker PB2 tripping operations
Single shot reclosing is carried out after the default time, is restored electricity if failure is transient fault, controlled if failure is permanent fault
User demarcation breaker PB2 processed completes automatic fault isolation in post reclosing acceleration trip operation and locking combined floodgate.
2nd, trunk feeder branch line user side line-to-ground fault is isolated
Control user demarcation breaker detects tripping operation excision failure after fault current, and it is pre- to reach time delay in the trip time
If time after control user demarcation breaker carry out single shot reclosing：Restored electricity if failure is transient fault, if failure
User demarcation breaker is then controlled for permanent fault in post reclosing acceleration trip operation and locking combined floodgate, with isolated fault.
Figure 15 is user after power distribution network generation trunk feeder branch line user side line-to-ground fault in the embodiment of the present invention
Demarcation circuit breaker isolated fault schematic diagram, as illustrated, trunk feeder branch line user side circuit is grounded in the present embodiment
Failure, time delay 10s trips after user demarcation breaker PB1 detects fault current, and the work time delay of branch line breaker FB1
Time is 15s, therefore the action protection of branch line breaker FB1 is returned after the demarcation circuit breaker PB1 tripping operations of family.Family boundary open circuit
Single shot reclosing is carried out after the time delay default time after device PB1 tripping operations, is restored electricity if failure is transient fault, if failure is
Permanent fault then controls user demarcation breaker PB1 in post reclosing acceleration trip operation and locking combined floodgate, completes failure certainly
Dynamic isolation.
Coincidence formula failure separation method is said on the spot when failure and the earth fault of being short-circuited to power distribution network separately below
It is bright.
1st, short trouble
Fig. 2 is short trouble partition method implementing procedure figure in the embodiment of the present invention, as illustrated, when matching somebody with somebody in the present embodiment
The circuit of power network is short-circuited after failure, first determines whether fault type, including trunk feeder short trouble, trunk feeder branch line
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.
2nd, earth fault
Fig. 3 is earth fault isolation method implementing procedure figure in the embodiment of the present invention, as illustrated, when matching somebody with somebody in the present embodiment
After the circuit of power network occurs earth fault, fault type, including trunk feeder earth fault, trunk feeder branch line are first determined whether
Road earth fault and trunk feeder branch line user side line-to-ground fault, are then individually insulated respectively according to step S102~S104
Earth fault.
Present invention also offers a kind of coincidence formula fault isolation system on the spot, and provide specific embodiment.
The formula fault isolation system that overlapped on the spot in the present embodiment 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, fault type, fault type bag are determined 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 is connected with transformer station by transformer station's wire-outgoing breaker and the segmentation of multiple series connection is set on the trunk feeder
Breaker, trunk feeder branched line is connected by branch line breaker with trunk feeder, trunk feeder branch line user's side line
Road is connected by user demarcation breaker with the trunk feeder branched line.
Trunk feeder Fault Isolation module, first for controlling transformer station's wire-outgoing breaker or trunk feeder is segmented open circuit
Device is tripped and single shot reclosing successively, isolates trunk feeder failure.
Trunk feeder branched line Fault Isolation module, the action delay time for setting branch line breaker distinguishes small
In transformer station's wire-outgoing breaker and the action delay time of section switch, and control branch line breaker carry out successively tripping operation and
Single shot reclosing, isolates trunk feeder branched line failure.
Trunk feeder branch line user side line fault isolation module, the action delay for setting user demarcation breaker
Time is respectively smaller than the action delay time of transformer station's wire-outgoing breaker, section switch and branch line breaker, and controls to use
Family demarcation circuit breaker is tripped and single shot reclosing successively, isolates trunk feeder branch line user side line fault.
Trunk feeder Fault Isolation module is detecting failure electricity by controlling transformer station's wire-outgoing breaker in the present embodiment
Tripped successively and single shot reclosing after stream, trunk feeder failure can be effectively isolated；Trunk feeder branched line failure every
From module by setting the action delay time difference of transformer station's wire-outgoing breaker and section switch, and control branch line breaker
Tripped successively and single shot reclosing, trunk feeder branched line failure can be isolated, reduced transformer station's wire-outgoing breaker
Tripping times, further reduce the service restoration time in Fault Isolation time and non-faulting region；Trunk feeder branch line
User side line fault isolation module by set transformer station's wire-outgoing breaker, section switch and user demarcation breaker when
Between it is poor, and control user demarcation breaker to be tripped successively and single shot reclosing, trunk feeder branch line user can be isolated
Side line fault, reduces the tripping times of transformer station's wire-outgoing breaker, further reduces Fault Isolation time and non-faulting
The service restoration time in region.
Further, trunk feeder Fault Isolation module can also include following structures in the present embodiment, specially：
1st, 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, for controlling transformer station's wire-outgoing breaker to detect the failure electricity of trunk feeder short trouble
Trip excision failure after stream so that each section switch decompression separating brake in trunk feeder.
Second control subelement, for controlling transformer station's wire-outgoing breaker to carry out single shot reclosing so that in trunk feeder
Each section switch is sent a telegram here reclosing successively：After transformer station's wire-outgoing breaker or section switch reclosing are in fault zone,
Transformer station's wire-outgoing breaker or section switch of fault zone front end are controlled in post reclosing acceleration trip operation and closed bite
Lock, and control the locking after sending a telegram here in short-term of the section switch of fault zone rear end to close a floodgate, with isolated fault.
2nd, trunk feeder earth fault isolated location
Trunk feeder earth fault isolated location includes the 3rd control subelement and the 4th control subelement in the present embodiment.
Wherein：3rd control subelement, for controlling first section switch to detect the event of trunk feeder earth fault
Trip excision failure after barrier electric current so that remaining each section switch decompression separating brake.
4th control subelement, for controlling first section switch to carry out single shot reclosing so that remaining each segmentation is disconnected
Road device is sent a telegram here reclosing successively：After first section switch or remaining each section switch reclosing are in 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 control the locking after sending a telegram here in short-term of the section switch of fault zone rear end to close a floodgate, with isolated fault.
Further, trunk feeder branched line Fault Isolation module can also include following structures, tool in the present embodiment
Body is：
1st, trunk feeder branched line short trouble isolated location
Trunk feeder branched line short trouble isolated location in the present embodiment, for controlling branch line breaker to detect
After the fault current of trunk feeder branched line short trouble trip excision failure, and the trip time reach time delay it is default when
Between after the control branch line breaker carry out single shot reclosing：Restored electricity if failure is transient fault, if failure is for forever
Long property failure then controls branch line breaker in post reclosing acceleration trip operation and locking combined floodgate, with isolated fault.
2nd, trunk feeder branched line earth fault isolated location
Trunk feeder branched line earth fault isolated location in the present embodiment, for controlling branch line breaker to detect
After the fault current of trunk feeder branched line earth fault trip excision failure, and the trip time reach time delay it is default when
Between after control branch line breaker carry out single shot reclosing：Restored electricity if failure is transient fault, if failure is permanent
Failure then controls branch line breaker in post reclosing acceleration trip operation and locking combined floodgate, with isolated fault.
Further, in the present embodiment trunk feeder branch line user side line fault isolation module can also include it is following
Structure, specially：
1st, 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, for controlling user demarcation to break
Road device is detected and trip after the fault current of trunk feeder branch line user side line short fault excision failure, and in tripping operation
Between reach and control after the time delay default time user demarcation breaker and carry out single shot reclosing：Recover if failure is transient fault
Power supply, controls user demarcation breaker in post reclosing acceleration trip operation and locking combined floodgate if failure is permanent fault,
With isolated fault.
2nd, 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, for controlling user demarcation to break
Road device is detected and trip after the fault current of trunk feeder branch line user side line-to-ground fault excision failure, and in tripping operation
Between reach and control after the time delay default time user demarcation breaker and carry out single shot reclosing：Recover if failure is transient fault
Power supply, controls user demarcation breaker in post reclosing acceleration trip operation and locking combined floodgate if failure is permanent fault,
With isolated fault.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the application can be used and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) is produced
The form of product.
The application is the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. one kind coincidence formula failure separation method on the spot, it is characterised in that methods described includes：
Determine fault type according to the fault zone of power distribution network, the fault type includes trunk feeder failure, trunk feeder point
Branch line failure and trunk feeder branch line user side line fault；Wherein：Trunk feeder passes through transformer station in the power distribution network
Wire-outgoing breaker is connected with transformer station and the section switch of multiple series connection, trunk feeder branch line is set on the trunk feeder
Road is connected by branch line breaker with the trunk feeder, and trunk feeder branch line user side circuit is by user demarcation open circuit
Device is connected with the trunk feeder branched line；
Control transformer station's wire-outgoing breaker or the trunk feeder first section switch carry out successively tripping operation and once
Reclosing, isolates the trunk feeder failure；
The action delay time for setting the branch line breaker is respectively smaller than transformer station's wire-outgoing breaker and segmentation open circuit
The action delay time of device, and control the branch line breaker to be tripped successively and single shot reclosing, isolate the trunk
Feeder branch line fault；
The action delay time for setting the user demarcation breaker is respectively smaller than transformer station's wire-outgoing breaker, segmentation open circuit
The action delay time of device and branch line breaker, and control the user demarcation breaker carry out successively tripping operation and once overlap
Lock, isolates the trunk feeder branch line user side line fault.
2. as claimed in claim 1 a kind of coincidence formula failure separation method on the spot, it is characterised in that the trunk feeder failure
Including trunk feeder short trouble, the isolation trunk feeder failure includes：
Transformer station's wire-outgoing breaker is controlled to detect tripping operation excision failure after fault current so that each in the trunk feeder
Section switch decompression separating brake；
Controlling transformer station's wire-outgoing breaker carries out single shot reclosing so that each section switch is successively in the trunk feeder
Incoming call reclosing：After transformer station's wire-outgoing breaker or section switch reclosing are in the fault zone, control is described
Transformer station's wire-outgoing breaker or section switch of fault zone front end in post reclosing acceleration trip operation, simultaneously close a floodgate by locking, and
The locking after sending a telegram here in short-term of the section switch of the fault zone rear end is controlled to close a floodgate, with isolated fault.
3. as claimed in claim 1 a kind of coincidence formula failure separation method on the spot, it is characterised in that the trunk feeder failure
Including trunk feeder earth fault, the isolation trunk feeder failure includes：
The first section switch is controlled to detect tripping operation excision failure after fault current so that remaining each section switch loses
Pressure separating brake；
Controlling the first section switch carries out single shot reclosing so that each section switch of remaining described is sent a telegram here again successively
Close a floodgate：After the first section switch or each section switch reclosing of remaining described are in 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 operation
Make and locking closed a floodgate, and control the locking after sending a telegram here in short-term of the section switch of the fault zone rear end to close a floodgate, to isolate therefore
Barrier.
4. as claimed in claim 1 a kind of coincidence formula failure separation method on the spot, it is characterised in that the trunk feeder branch
Line fault includes trunk feeder branched line short trouble and trunk feeder branched line earth fault；The isolation trunk feedback
Line branched line failure includes：
The branch line breaker is controlled to detect tripping operation excision failure after fault current, and it is default to reach time delay in the trip time
Time after control the branch line breaker to carry out single shot reclosing：Restored electricity if the failure is transient fault, if
The failure then controls branch line breaker in post reclosing acceleration trip operation and locking combined floodgate for permanent fault, to isolate
Failure.
5. as claimed in claim 1 a kind of coincidence formula failure separation method on the spot, it is characterised 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 earth fault；The isolation trunk feeder branch line user side line fault includes：
The user demarcation breaker is controlled to detect tripping operation excision failure after fault current, and it is pre- to reach time delay in the trip time
If time after control the user demarcation breaker to carry out single shot reclosing：Recover to supply if the failure is transient fault
Electricity, controls user demarcation breaker in post reclosing acceleration trip operation and closed bite if the failure is permanent fault
Lock, with isolated fault.
6. one kind coincidence formula fault isolation system on the spot, it is characterised in that the system includes：
Fault type determining module, fault type is determined for the fault zone according to power distribution network, and the fault type includes master
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 is connected with transformer station by transformer station's wire-outgoing breaker and the segmentation of multiple series connection is set on the trunk feeder
Breaker, trunk feeder branched line is connected by branch line breaker with the trunk feeder, trunk feeder branch line user
Side line road is connected by user demarcation breaker with the trunk feeder branched line；
Trunk feeder Fault Isolation module, first for controlling transformer station's wire-outgoing breaker or the trunk feeder is segmented
Breaker is tripped and single shot reclosing successively, isolates the trunk feeder failure；
Trunk feeder branched line Fault Isolation module, the action delay time for setting the branch line breaker distinguishes small
In transformer station's wire-outgoing breaker and the action delay time of section switch, and the branch line breaker is controlled to enter successively
Row tripping operation and single shot reclosing, isolate the trunk feeder branched line failure；
Trunk feeder branch line user side line fault isolation module, the action delay for setting the user demarcation breaker
Time is respectively smaller than the action delay time of transformer station's wire-outgoing breaker, section switch and branch line breaker, and controls
Make the user demarcation breaker to be tripped successively and single shot reclosing, isolate the trunk feeder branch line user side circuit
Failure.
7. as claimed in claim 6 a kind of coincidence formula fault isolation system on the spot, it is characterised in that the trunk feeder failure
Isolation module includes trunk feeder short trouble isolated location；The trunk feeder short trouble isolated location includes the first control
Subelement and the second control subelement；
The first control subelement, for controlling transformer station's wire-outgoing breaker to detect the event of trunk feeder short trouble
Trip excision failure after barrier electric current so that each section switch decompression separating brake in the trunk feeder；
The second control subelement, for controlling transformer station's wire-outgoing breaker to carry out single shot reclosing so that the master
Each section switch is sent a telegram here reclosing successively in dry feeder line：When transformer station's wire-outgoing breaker or section switch reclosing in
Behind the fault zone, transformer station's wire-outgoing breaker or section switch of the fault zone front end is controlled to add after reclosing
Fast trip operation and locking are closed a floodgate, and control the locking after sending a telegram here in short-term of the section switch of the fault zone rear end to close a floodgate,
With isolated fault.
8. as claimed in claim 6 a kind of coincidence formula fault isolation system on the spot, it is characterised in that the trunk feeder failure
Isolation module includes trunk feeder earth fault isolated location；The trunk feeder earth fault isolated location includes the 3rd control
Subelement and the 4th control subelement；
The 3rd control subelement, for controlling the first section switch to detect the failure of trunk feeder earth fault
Trip excision failure after electric current so that remaining each section switch decompression separating brake；
The 4th control subelement, for controlling the first section switch to carry out single shot reclosing so that described its
Remaining each section switch is sent a telegram here reclosing successively：When the first section switch or each section switch of remaining described overlap
Lock is in first section switch or remaining the described respectively segmentation open circuit for behind the fault zone, controlling the fault zone front end
Device controls the section switch of the fault zone rear end to come in short-term in post reclosing acceleration trip operation and locking combined floodgate
Locking is closed a floodgate after electricity, with isolated fault.
9. as claimed in claim 6 a kind of coincidence formula fault isolation system on the spot, it is characterised in that the trunk feeder branch
Line fault isolation module includes trunk feeder branched line short trouble isolated location and the ground connection event of trunk feeder branched line
Barrier isolated location；
The trunk feeder branched line short trouble isolated location, presents for controlling the branch line breaker to detect trunk
Trip excision failure after the fault current of line branched line short trouble, and is controlled after the trip time reaches the time delay default time
Making the branch line breaker carries out single shot reclosing：Restored 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 locking combined floodgate, with isolated fault；
The trunk feeder branched line earth fault isolated location, presents for controlling the branch line breaker to detect trunk
Trip excision failure after the fault current of line branched line earth fault, and is controlled after the trip time reaches the time delay default time
Making the branch line breaker carries out single shot reclosing：Restored 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 locking combined floodgate, with isolated fault.
10. as claimed in claim 6 a kind of coincidence formula fault isolation system on the spot, it is characterised in that the trunk feeder point
Branch line user side line fault isolation module includes trunk feeder branch line user side line short fault isolated location and trunk
Feeder branch line user side line-to-ground fault isolated location；
The trunk feeder branch line user side line short fault isolated location, for controlling the user demarcation breaker to examine
Tripping operation excision failure after the fault current of trunk feeder branch line user side line short fault is measured, and is reached in the trip time
Time delay controls the user demarcation breaker to carry out single shot reclosing after the default time：It is extensive if the failure is transient fault
Multiple power supply, controls user demarcation breaker in post reclosing acceleration trip operation and locking if the failure is permanent fault
Close a floodgate, with isolated fault；
The trunk feeder branch line user side line-to-ground fault isolated location, for controlling the user demarcation breaker to examine
Tripping operation excision failure after the fault current of trunk feeder branch line user side line-to-ground fault is measured, and is reached in the trip time
Time delay controls the user demarcation breaker to carry out single shot reclosing after the default time：It is extensive if the failure is transient fault
Multiple power supply, controls user demarcation breaker in post reclosing acceleration trip operation and locking if the failure is permanent fault
Close 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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| CN107465177A (en) * | 2017-10-11 | 2017-12-12 | 山东理工大学 | A kind of power distribution network low current grounding partition method based on regional agency |
| CN108054739A (en) * | 2017-12-18 | 2018-05-18 | 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 |
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| CN109256757A (en) * | 2018-11-26 | 2019-01-22 | 国网山东省电力公司电力科学研究院 | A kind of single-phase grounded malfunction in grounded system of low current automatism isolation and reclosing scheme |
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| CN107465177A (en) * | 2017-10-11 | 2017-12-12 | 山东理工大学 | A kind of power distribution network low current grounding partition method based on regional agency |
| 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 |
| CN108054739A (en) * | 2017-12-18 | 2018-05-18 | 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 |
| CN108448545A (en) * | 2018-04-12 | 2018-08-24 | 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 |
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| CN109256757A (en) * | 2018-11-26 | 2019-01-22 | 国网山东省电力公司电力科学研究院 | A kind of single-phase grounded malfunction in grounded system of low current automatism isolation and reclosing scheme |
| CN111244879A (en) * | 2018-11-29 | 2020-06-05 | 中国电力科学研究院有限公司 | X time limit setting method and system for in-situ feeder automation terminal |
| 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 |
| CN110048384A (en) * | 2019-05-14 | 2019-07-23 | 国网北京市电力公司 | A kind of distribution high reliability self-healing method and system |
| 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 |
| CN110556801A (en) * | 2019-09-11 | 2019-12-10 | 云南电力技术有限责任公司 | power distribution automation FTU locking protection method |
| CN111884192A (en) * | 2020-05-25 | 2020-11-03 | 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 |
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| 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 |
| CN111884184A (en) * | 2020-07-30 | 2020-11-03 | 国网重庆市电力公司电力科学研究院 | New energy access local type feeder line control method and system |
| CN112310948A (en) * | 2020-10-29 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Method for processing fault of ultra-long 10kV feeder line based on intermediate circuit breaker |
| CN112310948B (en) * | 2020-10-29 | 2023-08-18 | 云南电网有限责任公司电力科学研究院 | Method for processing ultra-long 10kV feeder line faults based on intermediate circuit breaker |
| CN113471941A (en) * | 2021-07-05 | 2021-10-01 | 许继集团有限公司 | Fault isolation control method for power distribution network |
| CN113471941B (en) * | 2021-07-05 | 2023-08-01 | 河南源网荷储电气研究院有限公司 | Fault isolation control method for power distribution network |
| CN114050546A (en) * | 2021-11-17 | 2022-02-15 | 贵州电网有限责任公司 | Reclosing method for cooperatively starting network access line of small hydropower station |
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