CN109449895A - Distributed self-healing control method suitable for breaker load switch hybrid power distribution network - Google Patents
Distributed self-healing control method suitable for breaker load switch hybrid power distribution network Download PDFInfo
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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
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Abstract
The disclosure relates to a distributed self-healing control method suitable for a breaker load switch hybrid power distribution network. The method is applied to a power distribution network and comprises the following steps: determining the corresponding relation between a tie switch and an outlet switch and dividing communication groups according to the physics and application categories of the switches and the connection relation between the switches and the line sections; monitoring information of line sections at the downstream of the switches according to the corresponding relation of the outgoing switches; transmitting a fault signal to an adjacent switch through the switch which monitors the fault signal; controlling a first switch meeting a first isolation condition to be switched off so as to power off a downstream section of the first switch; controlling the downstream adjacent second switch to be opened when the second isolation condition is met so as to accurately isolate the fault area; the first switch is controlled to close to restore the non-failure region when it satisfies the restoration condition. The embodiment of the disclosure can enable the breaker and the load switch to be matched with each other when a fault occurs, thereby positioning and isolating a fault area and recovering the power supply of a non-fault area.
Description
Technical field
This disclosure relates to electric power project engineering field, more particularly to it is a kind of suitable for breaker on-load switch mixing power distribution network
Distributed self-healing control method.
Background technique
Intelligent distribution network is by between the adjacent switch in region based on the intelligent distribution self-healing control communicated between terminal
Peer-to-peer communications exchange trouble relevant information, and then complete restoring electricity for the positioning of failure, isolation and non-faulting region.Such as
Switch around fruit fault point is all breaker, being capable of open circuit before the tripping of substation's outlet switch around tripping fault point
Device, realize feeder fault after substation's outlet switch without tripping, by between terminal communicate realize failure it is quick positioning and
Isolation, the load of failure upstream are not influenced by failure.But the case where switch on distribution feeder is all breaker at present, is very
It is few, largely it is made of breaker and on-load switch mixing.If the feeder line between on-load switch occurs for feeder fault
Outlet switch tripping causes feeder line all have a power failure, at present terminal intelligent distributed self-healing control method cannot achieve on-load switch it
Between failure quick positioning isolation.
Summary of the invention
In view of this, the present disclosure proposes a kind of distributed self-healing controls suitable for breaker on-load switch mixing power distribution network
Method processed.
According to the one side of the disclosure, provide it is a kind of suitable for breaker on-load switch mixing power distribution network it is distributed from
More control method, the method are applied to distribution network, and the distribution network includes multiple switch and multiple track sections, institute
The physics classification for stating multiple switch includes breaker and on-load switch, the applicating category of the multiple switch include outlet switch,
Block switch and interconnection switch, which comprises
According to the company between physics classification, applicating category and the multiple switch and multiple track sections of the multiple switch
Relationship is connect, determines the interconnection switch corresponding relationship and outlet switch corresponding relationship of the multiple switch, and is the multiple switch
Multiple communication sets are divided, each communication set includes adjacent switch or adjacent breaker；
According to the outlet switch corresponding relationship of the multiple switch, the section letter of the track section in multiple switch downstream is monitored
Breath, the section information include at least fault-signal；
When monitoring fault-signal, by the corresponding panel switches monitor terminal FTU of first switch to second switch pair
The FTU answered sends the fault-signal, wherein the first switch is the switch that fault-signal is monitored in multiple switch, institute
Stating second switch is the switch that the first switch is in same communication set；
When the first switch meets the first isolation condition, controls the first switch and disconnect, so that described first opens
Close the track section power-off in downstream；
When the second switch in the first switch downstream meets the second isolation condition, it is disconnected to control the second switch
It opens, the track section adjacent with the second switch is isolated；
When the first switch meets the first recovery condition, the first switch closure is controlled, to restore described first
The power supply of the track section of switch downstream.
In one possible implementation, the method also includes:
When the third switch in the second switch downstream meets third isolation condition, it is disconnected to control the third switch
It opens, adjacent track section is switched with the third with isolation；
When third switch meets second and restores condition, according to the interconnection switch corresponding relationship of the multiple switch,
Interconnection switch closure corresponding with third switch is controlled, to restore the power supply of the track section of the third switch downstream.
In one possible implementation, the first isolation condition includes:
The first switch is breaker and closure, the first switch monitor fault-signal, receive from described
The fault-signal that the adjacent breaker in first switch upstream monitors, and do not receive adjacent from the first switch downstream
The fault-signal that breaker monitors.
In one possible implementation, the second isolation condition includes:
The first switch disconnects, the second switch is on-load switch and is closed and power loss, the second switch monitor
To fault-signal, receives the fault-signal of second switch upstream adjacent switch and do not receive and opened from described second
The adjacent switch monitors in downstream are closed to fault-signal.
In one possible implementation, it is breaker, described first that the first recovery condition, which includes: the first switch,
Switch disconnects and the second switch disconnects.
In one possible implementation, the third isolation condition includes:
The third switch is block switch and closure and power loss, third switch do not monitor fault-signal and connect
Receive the fault-signal of the adjacent switch of the third switch upstream.
In one possible implementation, the section information further includes the electric current of the track section of switch downstream,
In, the second recovery condition includes:
Third switch be block switch and disconnect and the electric current of the track section of the third switch downstream be less than or
Equal to the residual current surplus for switching corresponding outlet switch with the third.
In one possible implementation, the distribution network further includes multiple panel switches monitor terminal FTU, described
Multiple FTU are corresponding with the multiple switch respectively, for control it is the multiple switch be opened or closed, and monitor, send and/or
Receive the section information of multiple track sections.
In one possible implementation, it according to the physics classification of the multiple switch, applicating category and multiple opens
The connection relationship between multiple track sections is closed, determines the interconnection switch corresponding relationship and outlet switch pair of the multiple switch
It should be related to, and divide multiple communication sets for the multiple switch, comprising:
According to the connection relationship between the physics classification and multiple switch and multiple track sections of multiple switch, institute is determined
State switch neighbouring relations, the breaker neighbouring relations of multiple switch；
According to the applicating category of the multiple switch and the switch neighbouring relations, the multiple switch is determined respectively
Interconnection switch corresponding relationship and outlet switch corresponding relationship；
According to the breaker neighbouring relations of the multiple switch and switch neighbouring relations, divided for the multiple switch multiple
Communication set, each communication set include adjacent switch or adjacent breaker.
It is suitable for the distributed self-healing controlling party of breaker on-load switch mixing power distribution network provided by the embodiment of the present disclosure
Method, this method are applied in the distribution network that breaker is mixed with on-load switch, and this method includes the physics according to multiple switch
Connection relationship between classification, applicating category and multiple switch and multiple track sections determines the interconnection switch of multiple switch
Corresponding relationship and outlet switch corresponding relationship, and multiple communication sets are divided for multiple switch, each communication set includes adjacent opens
Pass or adjacent breaker；The outlet switch corresponding relationship of multiple switch monitors the section of the track section in multiple switch downstream
Information, section information include at least fault-signal；When monitoring fault-signal, supervised by the corresponding panel switches of first switch
Control terminal FTU sends the fault-signal to the corresponding FTU of second switch, wherein first switch is to monitor in multiple switch
The switch of fault-signal, second switch are the switch that first switch is in same communication set；Meet the first isolation in first switch
When condition, controls the first switch and disconnect, so that the track section in the first switch downstream powers off；It is being in first switch
When the second switch in downstream meets the second isolation condition, control second switch is disconnected, the route adjacent with second switch is isolated
Section；When first switch meets the first recovery condition, control first switch closure, to restore the line areas in first switch downstream
The power supply of section.In accordance with an embodiment of the present disclosure, the breaker near fault point can be disconnected when distribution network breaks down, and made
It obtains breaker and on-load switch divide-shut brake cooperates, thus quickly positioning and isolated fault region, and restore non-faulting region
Power supply.
According to below with reference to the accompanying drawings to detailed description of illustrative embodiments, the other feature and aspect of the disclosure will become
It is clear.
Detailed description of the invention
Comprising in the description and constituting the attached drawing of part of specification and specification together illustrates the disclosure
Exemplary embodiment, feature and aspect, and for explaining the principles of this disclosure.
Fig. 1 shows the distributed self-healing suitable for breaker on-load switch mixing power distribution network according to one embodiment of the disclosure
The flow chart of control method；
Fig. 2 shows the line construction schematic diagrames according to the distribution network of one embodiment of the disclosure；
Fig. 3 shows the distributed self-healing suitable for breaker on-load switch mixing power distribution network according to one embodiment of the disclosure
The flow chart of control method.
Specific embodiment
Various exemplary embodiments, feature and the aspect of the disclosure are described in detail below with reference to attached drawing.It is identical in attached drawing
Appended drawing reference indicate element functionally identical or similar.Although the various aspects of embodiment are shown in the attached drawings, remove
It non-specifically points out, it is not necessary to attached drawing drawn to scale.
Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, giving numerous details in specific embodiment below to better illustrate the disclosure.
It will be appreciated by those skilled in the art that without certain details, the disclosure equally be can be implemented.In some instances, for
Method, means, element and circuit well known to those skilled in the art are not described in detail, in order to highlight the purport of the disclosure.
Fig. 1 shows the distributed self-healing suitable for breaker on-load switch mixing power distribution network according to one embodiment of the disclosure
The flow chart of control method.This method is applied to distribution network, and distribution network includes multiple switch and multiple track sections, more
The physics classification of a switch includes breaker and on-load switch, and the applicating category of multiple switch includes outlet switch, block switch
And interconnection switch, this method may include step S11 to S16.
In step s 11, according to physics classification, applicating category and the multiple switch of multiple switch and multiple track sections
Between connection relationship, determine the interconnection switch corresponding relationship and outlet switch corresponding relationship of multiple switch, and be multiple switch
Multiple communication sets are divided, each communication set includes adjacent switch or adjacent breaker, and each communication set includes adjacent opens
Pass or adjacent breaker；
In step s 12, according to the outlet switch corresponding relationship of multiple switch, the track section in multiple switch downstream is monitored
Section information, section information include at least fault-signal；
In step s 13, when monitoring fault-signal, pass through the corresponding panel switches monitor terminal FTU of first switch
Fault-signal is sent to the corresponding FTU of second switch, wherein first switch is to monitor opening for fault-signal in multiple switch
It closes, second switch is the switch that first switch is in same communication set；
In step S14, when first switch meets the first isolation condition, control first switch is disconnected, so that first opens
Close the track section power-off in downstream；
In step S15, when the second switch in first switch downstream meets the second isolation condition, control second is opened
Shutdown is opened, the track section adjacent with second switch is isolated；
In step s 16, when first switch meets the first recovery condition, control first switch closure, to restore first
The power supply of the track section of switch downstream.
In accordance with an embodiment of the present disclosure, when distribution network breaks down, the open circuit before the tripping of substation's outlet switch
Device can quickly be positioned with the cooperation of on-load switch divide-shut brake and isolated fault region, and restores the power supply in non-faulting region.
In the present embodiment, distribution network can be by singly radiating feeder line or being made of the feeder line that switch links together
's.The attribute of each switch is ID, title, switchs physical type, switch application type, switch state, left side section ID, right side
Section ID, the physical type of switch are breaker and on-load switch, and switch application type is outlet switch, interconnection switch, segmentation
Switch, the attribute value of switch state are splitting or integrating, and the connection relationship between multiple switch is switch connection topological model.Distribution
Network further includes multiple panel switches monitor terminal FTU, and multiple FTU are corresponding with multiple switch respectively, and FTU is for controlling multiple open
Pass is opened or closed, and monitors, sends and/or receive the section information of multiple track sections, tool of the disclosure to distribution network
Body structure is with no restriction.
Fig. 2 shows the line construction schematic diagrames according to the distribution network of one embodiment of the disclosure.Below with Fig. 2 shows match
For electric network, the distributed self-healing control method suitable for breaker on-load switch mixing power distribution network of the disclosure is said
It is bright.It is to be understood that distribution network can have any form of line construction, the line construction of Fig. 2 is not constituted to this public affairs
The limitation opened.
It is linked together the feeder line group of composition as shown in Fig. 2, distribution network includes 3 feeder lines by two interconnection switches.
CB1, CB2 and CB3 are the outlet switch of 3 feeder lines, and B1, B2, B3, B4, B5 are that block switch (open for load by B2 and B3 switch
Close, B1, B4 and B5 are breaker), LL1 and LL2 are feeder line interconnection switch (switch state is quartile when normal operation), S1, S2,
S3, S4, S5, S6, S7, S8 are track section；The corresponding panel switches monitor terminal of CB1, CB2, CB3 is respectively FTU1, FTU7
And FTU10；The corresponding panel switches monitor terminal of LL1 and LL2 is respectively FTU6 and FTU9；B1, B2, B3, B4, B5 are corresponding to be matched
Electric switch monitor terminal is respectively FTU2, FTU3, FTU4, FTU5, FTU8.Wherein, FTU1, FTU2, FTU3, FTU4, FTU5,
FTU6, FTU7, FTU8 and FTU9 are opened or closed for controlling multiple switch, and monitor, send and/or receive multiple line areas
The section information of section.
In one possible implementation, according to physics classification, applicating category and the multiple switch of multiple switch with
Connection relationship between multiple track sections determines the interconnection switch corresponding relationship and outlet switch corresponding relationship of multiple switch,
And multiple communication sets are divided for multiple switch, each communication set includes adjacent switch or adjacent breaker.Step S11 can be with
Include:
According to the connection relationship between the physics classification and multiple switch and multiple track sections of multiple switch, determination is more
Switch neighbouring relations, the breaker neighbouring relations of a switch；
According to the applicating category of multiple switch and switch neighbouring relations, determine that the interconnection switch of multiple switch is corresponding respectively
Relationship and outlet switch corresponding relationship；
According to the breaker neighbouring relations of multiple switch and switch neighbouring relations, communication set is divided for multiple switch, each
Communication set includes adjacent switch or adjacent breaker.
In this implementation, the line construction of distribution network as shown in Figure 2 is respectively CB1, CB2 by outlet switch
With 3 feeder lines of CB3, the feeder line contact group to be linked together by 2 interconnection switches LL1 and LL2.3 outlet switch CB1,
CB2 and CB3 has the section ID of side for sky, and connection relationship model is as shown in table 1 between the switch of the feeder line contact group.
The switch connection relationship model of 1 distribution network of table
In this implementation, Fault Quick Diagnosis positioning isolation uses description breaker neighbouring relations model, therefore
Barrier is accurately positioned the model for the description switch neighbouring relations that isolation uses.Merged using Depth Priority Algorithm and is connected between switch
The section that on-load switch two sides connect in relational model is connect, extension section is formed, that is, forms breaker connection relationship model.Search
Other breakers of extension section connection obtain the left side open circuit of the breaker on the left of breaker in breaker connection relationship model
Device, the other breakers for searching for breaker right extension section connection in breaker connection relationship model obtain the right side of the breaker
Side breaker forms breaker neighbouring relations.The other of left side section connection are switched between search switch in connection relationship model
Switch obtains the switch left-side switch, switchs other the switching of right side section connection between search switch in connection relationship model
To the switch right-side switch, the neighbouring relations between switch are formed.Breaker connection can also be formed using other searching methods
Relational model, breaker neighbouring relations and switch between neighbouring relations, the disclosure to this with no restriction.
For example, alternate short AB two-phase to occur in section S3 according to the line construction of distribution network as shown in Figure 2
Illustrate that the breaker on-load switch mixing that is suitable for suitable for breaker on-load switch mixing distribution network is matched for the failure of road
The distributed self-healing control method of power grid.3 outlet switchs CB1, CB2 and CB3 have the section ID of side for sky, then the power distribution network
The switch connection relationship model of network is as shown in table 1.B2, B3 are on-load switch, using Depth Priority Algorithm, merge B2 and B3
The section of two sides connection forms extension section, i.e., S2, S3, S4, these three sections merge into an extension section, mark here
For ES1, then breaker connection relationship model as shown in Table 2 is formed.In the breaker connection relationship model shown in table 2, search
Other breakers of extension section connection obtain the left side breaker of the breaker on the left of rope breaker, and search right of circuit breaker expands
Other breakers of exhibition section section connection obtain the right side breaker of the breaker, obtain breaker neighbouring relations as shown in table 3.
2 breaker connection relationship model of table
| Breaker ID | Title | Left side extends section ID | Right extension section ID |
| CB1 | CB1 | S1 | |
| CB2 | CB2 | S6 | |
| CB3 | CB3 | S7 | |
| LL1 | LL1 | S5 | S6 |
| LL2 | LL2 | S8 | S7 |
| B1 | B1 | S1 | ES1 |
| B4 | B4 | ES1 | S5 |
| B5 | B5 | ES1 | S8 |
3 breaker neighbouring relations table of table
| Breaker ID | Title | Left side breaker | Right side breaker |
| CB1 | CB1 | B1 | |
| CB2 | CB2 | LL1 | |
| CB3 | CB3 | LL2 | |
| LL1 | LL1 | B4 | CB2 |
| LL2 | LL2 | B5 | CB3 |
| B1 | B1 | CB1 | B4,B5 |
| B4 | B4 | B1,B5 | LL1 |
| B5 | B5 | B1,B4 | LL2 |
In the switch connection relationship model of the distribution network of table 1, other the switching of section connection on the left of search switch
Other switches to the switch left-side switch, the section connection of search switch right side obtain the switch right-side switch, are formed such as 4 institute of table
The adjacent connection relationship of the switch shown.
Table 4 switchs neighbouring relations table
| ID | Title | Left-side switch | Right-side switch |
| CB1 | CB1 | B1 | |
| CB2 | CB2 | LL1 | |
| CB3 | CB3 | LL2 | |
| LL1 | LL1 | B4 | CB2 |
| LL2 | LL2 | B5 | CB3 |
| B1 | B1 | CB1 | B2 |
| B2 | B2 | B1 | B3,B5 |
| B3 | B3 | B2,B5 | B4 |
| B4 | B4 | B3 | LL1 |
| B5 | B5 | B2,B3 | LL2 |
In this implementation, fault recovery uses description fault down stream interconnection switch corresponding relationship and outlet switch
The model of corresponding relationship.According to connection relationship model between switch, to each interconnection switch since the section that left side connects, with
Breadth-first search search, is powered path tracing, until tracking feeder line outlet switch, record left side power supply
Switch, for corresponding outlet switch.Using power supply switch on the right side of same method tracing record, for corresponding outlet switch；With
Breadth-first search scans for, it is split put into row supply district tracking, the interconnection switch of supply district contour connection and
The corresponding power supply switch in interconnection switch opposite side, for the corresponding interconnection switch of the switch and its outlet switch, forms switch
Interconnection switch corresponding relationship and outlet switch corresponding relationship.The interconnection switch pair of switch can also be formed using other searching methods
Should be related to and outlet switch corresponding relationship, the disclosure to this with no restriction.
For example, connection relationship model is switched according to shown in table 1, the section S5 connected on the left of interconnection switch LL1
Start, is searched for breadth-first search, be powered path tracing, until tracking outlet switch, the outlet that tracks
Switch is CB1.Same method, the outlet switch that the section S6 that the right side interconnection switch LL1 connects is tracked is CB2, interconnection switch
The outlet switch that the section S8 connected on the left of LL2 is tracked is CB1, the outlet switch that the section S7 connected on the right side of LL2 is tracked
It is CB3.That is power supply switch is CB1 on the left of interconnection switch LL1, and power supply switch in right side is CB2.Interconnection switch LL2 is left
Power supply switch in side is CB1, and power supply switch in right side is CB3.
Connection relationship model is switched according to shown in table 1, is scanned for breadth-first search, it is split to put capable confession into
Electric range tracking, the corresponding power supply switch of the interconnection switch of supply district contour connection and interconnection switch opposite side, is opened for this
Close corresponding interconnection switch and its corresponding outlet switch.It obtains switching corresponding interconnection switch and its corresponding outlet switch are as follows:
The corresponding interconnection switch of switch CB1, B1, B2 is LL1 and LL2, and the corresponding outlet switch of LL1 is CB2, and the corresponding outlet of LL2 is opened
Closing is CB3；The corresponding interconnection switch of B3 and B4 is LL1, and the corresponding outlet switch of LL1 is CB2；The corresponding interconnection switch of B5 is
The corresponding outlet switch of LL2, LL2 is CB3；The corresponding interconnection switch of CB2 is LL1, and the corresponding outlet switch of LL1 is CB1；CB3
Corresponding interconnection switch is LL2, and the corresponding interconnection switch of LL2 is CB1.
In this implementation, distribution network shown in preservation table 1 inside corresponding panel switches monitor terminal FTU is switched
Switch connection relationship.Panel switches monitor terminal forms monitoring control model according to the link model between switch shown in table 1
Enclose the switch neighbouring relations models of interior all switches, breaker neighbouring relations model, switch interconnection switch corresponding relationship and go out
Wiretap corresponding relationship.Adjacent switch, adjacent breaker are divided into the same communication set, and all switches are same logical
Letter group.Switch can be drawn according to the position of the physics classification of multiple switch, applicating category and switch in practical distribution feeder
Point communication set, the disclosure to this with no restriction.
In one possible implementation, communication set can be divided to line construction as shown in Figure 2, to realize communication
The communication between each FTU in group.Adjacent breaker can be divided into multiple communications according to breaker neighbouring relations model
Group, such as it is divided into communication set (CB1, B1), (B1, B4, B5), (B4, LL1), (B5, LL2), (LL1, CB2), (LL2, CB3)；
Meanwhile except the communication set that circuit breakers are formed, adjacent switch can also be divided according to switch neighbouring relations multiple logical
Letter group, for example, marking off communication set (B1, B2), (B2, B3, B5), (B3, B4).
In one possible implementation, it according to the outlet switch corresponding relationship of multiple switch, detects under multiple switch
The section information of the track section of trip, section information include at least fault-signal.
In this implementation, section information includes at least fault-signal, can also be switch state, the voltage in switch
Electric current etc., the disclosure to concrete signal type included by section information with no restriction.Wherein, fault-signal includes short trouble
Characteristic signal and Fault feature of single phase earthing signal, short trouble characteristic signal refer to phase current whether more limit value, phase current more
The limit value duration whether be more than setting limit value etc.；Fault feature of single phase earthing signal refers to whether zero-sequence current is out-of-limit, zero
The sequence electric current out-of-limit duration whether be more than setting limit value etc..
According to the outlet switch corresponding relationship of multiple switch, the section information of the track section in multiple switch downstream is detected.
For example, the line construction of distribution network as shown in Figure 2, after AB phase fault occurs for section S3, switch CB1, B1 and B2
Corresponding panel switches monitor terminal FTU1, FTU2 and FTU3 can monitor AB phase fault characteristic signal in switch,
It switchs corresponding panel switches monitor terminal monitoring less than AB correlation short trouble characteristic signal.
In one possible implementation, when monitoring fault-signal, pass through the corresponding panel switches of first switch
Monitor terminal FTU sends fault-signal to the corresponding FTU of second switch, wherein first switch is that event is monitored in multiple switch
Hinder the switch of signal, second switch is the switch that same communication set is in first switch.
In this implementation, the corresponding distribution power automation terminal of first switch monitors the fault-signal in switch, leads to
Cross that first switch is corresponding to be sent to the corresponding FTU of second switch fault characteristic signals with electric control monitor terminal FTU, first
Switch is the switch that fault-signal is monitored in multiple switch, and second switch is to be in opening for same communication set with first switch
It closes.For example, the line construction of distribution network as shown in Figure 2, the corresponding panel switches monitoring of switch CB1, B1 and B2 is eventually
End FTU1, FTU2 and FTU3 can monitor that AB phase fault signal in switch, FTU1 notify the fault-signal monitored
To FTU2, FTU2 notifies the fault-signal monitored to FTU1, FTU3, FTU5 and FTU8, FTU3 by fault-signal notify to
FTU2, FTU4 and FTU8.
In one possible implementation, when first switch meets the first isolation condition, control first switch is disconnected,
So that the track section in first switch downstream powers off.First isolation condition includes: that first switch is breaker and closure, first opens
Pass monitors fault-signal, and receives the fault-signal that the adjacent breaker from first switch upstream monitors, and not
Receive the fault-signal that the breaker adjacent from first switch downstream monitors.
In this implementation, when first switch meets the first isolation condition, i.e., first switch be breaker and closure,
First switch monitors fault-signal and receives the fault-signal that the breaker adjacent from first switch upstream monitors,
And the fault-signal that the breaker adjacent from first switch downstream monitors is not received, it thus controls first switch and disconnects,
So that the track section in first switch downstream powers off.
For example, the line construction of distribution network as shown in Figure 2, after AB phase fault occurs for section S3, breaker
The corresponding monitoring of electric power terminal FTU1 of CB1 has monitored AB phase fault signal, does not have breaker on the left of breaker CB1,
Right side breaker is B1, but have received that B1 corresponds to that panel switches monitor terminal FTU2 sends has monitored AB phase fault
Signal then can determine that failure occurs in the downstream switch B1 (right side), and breaker CB1 does not need to disconnect.Breaker B1 is monitored
AB phase fault signal, the left side breaker B1 breaker is CB1, and the breaker on right side is B4 and B5, and breaker B1 is corresponding
Panel switches monitor terminal FTU2 monitoring of having received that the corresponding panel switches monitor terminal FTU1 of breaker CB1 sends
AB phase fault signal is not received by transmission B4 or B5 that right side breaker B4 and B5 correspond to panel switches monitor terminal
Corresponding panel switches monitor terminal monitors AB fault-signal (B4 and B5 do not monitor fault-signal), then can determine failure
Occur between switch B1 and right side breaker B4 and B5, panel switches monitor terminal FTU2 order breaker B1 trips with quick
Isolated fault, and B1 Fault Isolation tripping information is notified to panel switches monitor terminals all in distribution network line.
In one possible implementation, meet the second isolation condition in the second switch in first switch downstream
When, control second switch disconnects, the track section adjacent with second switch is isolated.Second isolation condition includes that first switch is disconnected
It opens, second switch is on-load switch and is closed and power loss, second switch monitor fault-signal, receive upstream adjacent switch
Fault-signal and the fault-signal that the switch monitors adjacent from second switch downstream arrive is not received.
It in this implementation,, should for the second switch (on-load switch) for being in closed state after first switch disconnects
Second switch receives the information and the second switch decompression defluidization of first switch isolated fault tripping.If second switch monitors
Fault characteristic signals (failure occurs in second switch downstream), at least one monitoring of the switch in second switch left side (upstream)
Failure is arrived, right side (downstream) switch is sky or does not all monitor failure, then can determine that failure occurs on the right side of second switch
(downstream) can disconnect second switch with accurate isolated fault.
For example, distribution network line structure as shown in Figure 2, after AB phase fault occurs for section S3, on-load switch B2
Corresponding FTU monitors fault-signal, and B2 left-side switch is B1, and B2 right-side switch is B3 and B5, and the corresponding FTU of B1 is monitored
Fault-signal, B3 and B5 do not monitor that fault-signal, the corresponding FTU3 of B2 have received B1 and switch the prison that corresponding FTU2 is sent
AB phase fault signal is measured, FTU3 also receives the information of the breaker B1 isolated fault tripping of FTU2 transmission, and B1 is jumped
B2 decompression defluidization after lock, FTU3 send order tripping B2 with accurate isolated fault.
In one possible implementation, when first switch meets the first recovery condition, control first switch closure, with
Restore the power supply of the track section in first switch downstream.First recovery condition includes: that first switch is block switch, first switch
It disconnects and second switch disconnects.
In this implementation, after confirming second switch tripping, the first of notice isolated fault tripping is corresponding with establishing by cable
It closes monitor terminal to close a floodgate to first switch, the corresponding panel switches monitor terminal of breaker of isolated fault tripping receives logical
It is closed a floodgate to first switch after knowing to restore the power supply in second switch upstream non-faulting region.
For example, after confirmation B2 trips successfully, FTU3 notice FTU2 closes the breaker B1 that Fault Isolation trips
Lock, to restore the power supply in B2 switch upstream non-faulting region.After FTU2 has notice, close a floodgate to breaker B1, close a floodgate at
Restore the power supply of failure upstream non-faulting region (track section S2) after function.
Fig. 3 shows the distributed self-healing suitable for breaker on-load switch mixing power distribution network according to one embodiment of the disclosure
The flow chart of control method.
In one possible implementation, it is controlled suitable for the distributed self-healing of breaker on-load switch mixing power distribution network
Method further include:
In step S17, when the third switch in second switch downstream meets third isolation condition, described the is controlled
Three switches disconnect, and switch adjacent track section with the third with isolation；Third isolation condition includes that third switch is segmentation
Switch and be closed and power loss, third switch do not monitor fault-signal and receive third switch upstream adjacent switch event
Hinder signal；
In step S18, when third switch meets the second recovery condition, closed according to the interconnection switch of multiple switch is corresponding
System controls interconnection switch closure corresponding with third switch, to restore the power supply of the track section of third switch downstream.
In this implementation, section information further includes the electric current of the track section of switch downstream, wherein second restores item
Part includes that third switch is block switch and disconnects and the electric current of the track section of third switch downstream is less than or equal to and third
Switch the residual current capacity of corresponding outlet switch.
In this implementation, if third switch does not monitor fault characteristic signals, the adjacent pass of third switch upstream
It monitors fault characteristic signals, and has received the letter for the first switch isolated fault tripping that other panel switches monitor terminals are sent
It ceases and third switchs decompression defluidization, then disconnect third switch with accurate isolated fault.
In this implementation, it to each fault isolator, corresponds in interconnection switch and selects in the fault isolator
Select its and correspond to that maximum interconnection switch of feeder line outlet switch capacity, if corresponding feeder line outlet switch capacity be greater than failure every
Leave close decompression defluidization or tripping before electric current, then notify the corresponding panel switches monitor terminal of interconnection switch to interconnection switch into
Row closes a floodgate, and the corresponding panel switches monitor terminal of interconnection switch closes a floodgate to restore under failure to interconnection switch after having notice
Swim the power supply in non-faulting power loss region.
For example, AB phase fault occurs for distribution network line structure as shown in Figure 2, section S3, and switch B3 is corresponding
FTU4 does not monitor fault-signal, and the switch on the left of B3 is B2 and B5, and the switch on the right side of B3 is B4.Switch on the left of B3 has one
A i.e. corresponding FTU3 of B2 has monitored fault-signal, and the switch B4 on right side does not monitor fault-signal, and B3 is corresponding
FTU4 receives the information of the breaker B1 isolated fault tripping of FTU2 transmission, learns B1 tripping, B2 tripping, B1 by front analysis
After closing switch action sequence is sent, B3, B4 and B5 switch decompression defluidization, and FTU4 sends trip signal to switch B3, with accurate
Isolated fault.Similarly, FTU8 sends trip signal to switch B5, with accurate isolated fault.Do not monitor fault-signal and into
Row tripping is with the switch of isolated fault, the switch B3 and B5 of disconnection, referred to as fault down stream disconnecting switch.
In one possible implementation, when third switch meets the second recovery condition, according to the connection of multiple switch
Network switchs corresponding relationship, interconnection switch closure corresponding with third switch is controlled, to restore the track section of third switch downstream
Power supply.
For example, section information further includes the electric current of the track section of switch downstream, and the FTU of each switch can be monitored
The electric current of the track section of the switch downstream.When panel switches monitor terminal FTU1, FTU7 and FTU10 monitor that corresponding outlet is opened
After pass CB1, CB2 and CB3 electric current changes, corresponding outlet switch residual current capacity is calculated, residual current capability notification
To all panel switches monitor terminals other in distribution network line.It is assumed herein that switch CB1, CB2 and CB3 residual current capacity
Recent renewal is 100A, 120A and 150A.
In this implementation, the corresponding interconnection switch of disconnecting switch B3 is LL1, and LL1 turns to open for feeder line outlet accordingly
Closing is CB2, and CB2 residual current capacity is 120A, if the electric current before fault isolator B3 decompression defluidization or tripping is less than
120A then can determine that switch B3 meets the second recovery condition, the corresponding FTU6 of the corresponding FTU4 notice interconnection switch LL1 of switch B3
Close a floodgate to interconnection switch LL1, with restore switch B3 corresponding fault down stream power loss region (track section S4 in Fig. 2,
S5) the power supply of load, FTU6 close a floodgate to interconnection switch LL1 after having notice, and B3 disconnecting switch pair is completed after closing success
The service restoration for the fault down stream non-faulting power loss region load answered.
Similarly, residue electricity of the electric current less than outlet switch CB3 if fault isolator B5, before decompression defluidization or tripping
Current capacity 150A then can determine that switch B5 meets the second recovery condition, and the corresponding FTU8 notice interconnection switch LL2 of switch B5 is corresponding
Terminal FTU9 close a floodgate to interconnection switch LL2, to restore the switch B5 corresponding fault down stream power loss region (line in Fig. 2
Road section S8) load power supply, FTU9 closes a floodgate to interconnection switch LL2 after having notice, and switch B5 is completed after closing success
The service restoration of corresponding fault down stream non-faulting power loss region load.
In this way, can accurate isolated fault region, and restore the power supply in non-faulting region, realize breaker
The terminal intelligent distributed self-healing of on-load switch mixing power distribution network controls.
It is suitable for the distributed self-healing controlling party of breaker on-load switch mixing power distribution network provided by the embodiment of the present disclosure
Method, according to the connection relationship between physics classification, applicating category and the multiple switch and multiple track sections of multiple switch, really
Determine the interconnection switch corresponding relationship and outlet switch corresponding relationship of multiple switch, and divide multiple communication sets for multiple switch, often
A communication set includes adjacent switch or adjacent breaker；The outlet switch corresponding relationship of multiple switch monitors multiple switch
The section information of the track section in downstream, section information include at least fault-signal；When monitoring fault-signal, pass through first
It switchs corresponding panel switches monitor terminal FTU and sends fault-signal to the corresponding FTU of second switch, wherein first switch is
Monitor that the switch of fault-signal, second switch are the switch that same communication set is in first switch in multiple switch；?
When one switch meets the first isolation condition, control first switch is disconnected, so that the track section in first switch downstream powers off；Locating
When second switch in first switch downstream meets the second isolation condition, control second switch is disconnected, with isolation and second switch
Adjacent track section；When first switch meets the first recovery condition, control first switch closure, to restore under first switch
The power supply of the track section of trip.This method can breaker before the tripping of substation's outlet switch near tripping fault point,
It is isolated and restores so that breaker achievees the purpose that fast failure positions with the mutual cooperation of on-load switch divide-shut brake.
According to the embodiment of the present disclosure, a kind of terminal intelligent point suitable for breaker on-load switch mixing power distribution network is provided
Cloth self-healing control method is suitble to the physical cabling situation of domestic power distribution network at present, is directed to terminal intelligence using method of the invention
The implementation of energy distributed self-healing control program avoids the transformation of power distribution network extensive grid structure and primary equipment, reduces this
The implementation cost of scheme is conducive to the applied generalization of terminal intelligent distributed self-healing control.
It should be noted that matching although being described using above-described embodiment as example suitable for the mixing of breaker on-load switch
The distributed self-healing control method of power grid, it is understood by one of ordinary skill in the art that the disclosure answer it is without being limited thereto.In fact, with
Family can flexibly set each step according to personal preference and/or practical application scene completely, as long as meeting the technical solution of the disclosure
?.
The presently disclosed embodiments is described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.The selection of term used herein, purport
In principle, the practical application or to the technological improvement in market for best explaining each embodiment, or make the art its
Its those of ordinary skill can understand each embodiment disclosed herein.
Claims (9)
1. a kind of distributed self-healing control method suitable for breaker on-load switch mixing power distribution network, which is characterized in that described
Method is applied to distribution network, and the distribution network includes multiple switch and multiple track sections, the object of the multiple switch
Managing classification includes breaker and on-load switch, and the applicating category of the multiple switch includes outlet switch, block switch and connection
Network switch, which comprises
It is closed according to the connection between physics classification, applicating category and the multiple switch and multiple track sections of the multiple switch
System determines the interconnection switch corresponding relationship and outlet switch corresponding relationship of the multiple switch, and divides for the multiple switch
Multiple communication sets, each communication set include adjacent switch or adjacent breaker；
According to the outlet switch corresponding relationship of the multiple switch, the section information of the track section in multiple switch downstream is monitored,
The section information includes at least fault-signal；
It is corresponding to second switch by the corresponding panel switches monitor terminal FTU of first switch when monitoring fault-signal
FTU sends the fault-signal, wherein and the first switch is the switch that fault-signal is monitored in multiple switch, described the
Two switches are the switch that same communication set is in the first switch；
When the first switch meets the first isolation condition, controls the first switch and disconnect, so that under the first switch
The track section of trip powers off；
When the second switch in the first switch downstream meets the second isolation condition, controls the second switch and disconnects,
The track section adjacent with the second switch is isolated；
When the first switch meets the first recovery condition, the first switch closure is controlled, to restore the first switch
The power supply of the track section in downstream.
2. the method according to claim 1, wherein the method also includes:
When the third switch in the second switch downstream meets third isolation condition, controls the third switch and disconnects,
Adjacent track section is switched with the third with isolation；
When third switch meets the second recovery condition, according to the interconnection switch corresponding relationship of the multiple switch, control
Interconnection switch closure corresponding with third switch, to restore the power supply of the track section of the third switch downstream.
3. the method according to claim 1, wherein the first isolation condition includes:
The first switch is breaker and closure, the first switch monitor fault-signal, receive from described first
The fault-signal that the adjacent breaker of switch upstream monitors, and the open circuit adjacent from the first switch downstream is not received
The fault-signal that device monitors.
4. the method according to claim 1, wherein the second isolation condition includes:
The first switch disconnects, the second switch is on-load switch and is closed and power loss, the second switch monitor event
Barrier signal receives the fault-signal of second switch upstream adjacent switch and does not receive under the second switch
Adjacent switch monitors are swum to fault-signal.
5. the method according to claim 1, wherein the first recovery condition includes:
The first switch is breaker, the first switch disconnects and the second switch disconnects.
6. according to the method described in claim 2, it is characterized in that, third isolation condition includes:
The third switch is block switch and closure and power loss, third switch do not monitor fault-signal and receive
The fault-signal of the third switch upstream adjacent switch.
7. according to the method described in claim 2, it is characterized in that, the section information further includes the track section of switch downstream
Electric current, wherein the second recovery condition includes:
Third switch is block switch and disconnects and the electric current of the track section of the third switch downstream is less than or equal to
The residual current capacity of corresponding outlet switch is switched with the third.
8. the multiple the method according to claim 1, wherein the distribution network further includes multiple FTU
FTU is corresponding with the multiple switch respectively, is opened or closed for controlling the multiple switch, and monitor, send and/or receive
The section information of multiple track sections.
9. the method according to claim 1, wherein according to the physics classification of the multiple switch, applicating category
And the connection relationship between multiple switch and multiple track sections, determine the multiple switch interconnection switch corresponding relationship and
Outlet switch corresponding relationship, and multiple communication sets are divided for the multiple switch, comprising:
According to the connection relationship between the physics classification and multiple switch and multiple track sections of multiple switch, determine described more
Switch neighbouring relations, the breaker neighbouring relations of a switch；
According to the applicating category of the multiple switch and the switch neighbouring relations, the contact of the multiple switch is determined respectively
Switch corresponding relationship and outlet switch corresponding relationship；
According to the breaker neighbouring relations of the multiple switch and switch neighbouring relations, multiple communications are divided for the multiple switch
Group, each communication set include adjacent switch or adjacent breaker.
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