CN106159917B - Power distribution network indulges the relay protection system of sequence accelerated motion - Google Patents
Power distribution network indulges the relay protection system of sequence accelerated motion Download PDFInfo
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- CN106159917B CN106159917B CN201610681053.3A CN201610681053A CN106159917B CN 106159917 B CN106159917 B CN 106159917B CN 201610681053 A CN201610681053 A CN 201610681053A CN 106159917 B CN106159917 B CN 106159917B
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- 230000001681 protective effect Effects 0.000 claims abstract description 65
- 230000009977 dual effect Effects 0.000 claims abstract description 6
- 230000011218 segmentation Effects 0.000 claims description 19
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- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- 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
- H02H7/22—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 for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/226—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 for distribution gear, e.g. bus-bar systems; for switching devices for wires or cables, e.g. heating wires
Abstract
The present invention relates to the relay protection systems that a kind of power distribution network indulges sequence accelerated motion; it includes the distribution website institute of dual power supply; the first all busbar outlet wire protecting devices and the second all busbar outlet wire protecting devices are connect with section switch protection device, and section switch protection device is connect with segmented current mutual inductor and block switch；The sectionalized busbar three-phase current on sectionalized busbar is obtained by segmented current mutual inductor; if an at least phase is more than that sectionalized busbar preset in section switch protection device indulges sequence protective current setting valve in sectionalized busbar three-phase current; section switch protection device carries out timing, and is indulging the long time limit t of sequence action by being segmentedZXLAfterwards, section switch protection device control block switch is in tripping state.Structure of the invention is compact, effectively shortens distribution website station institute internal fault main protection actuation time, solves the problems, such as that power distribution network and major network relay protection setting time coordination are difficult.
Description
Technical field
The present invention relates to a kind of relay protection system, especially a kind of power distribution network indulges the relay protection system of sequence accelerated motion
System, belongs to the technical field of relay protection of power system.
Background technology
Reliably to there is selection excision failure, distribution website usually configures more protective relaying devices.As shown in Figure 1, being
The typical protective device of existing distribution website institute, specifically, including the first inlet wire 1, connect with the first inlet wire 1 the first busbar 9,
Second inlet wire 2 and the second busbar 10 being connect with second inlet wire 2, the first busbar 9 and the second busbar 10 are female by being segmented
Line 11 connects.The first inlet wire current mutual inductor 3 and the first service entrance switch 4, first inlet wire are provided on the first inlet wire 1
Current transformer 3, the first service entrance switch 4 are connect with the first incoming relay-protection device 7；Second inlet wire electricity is set on the second inlet wire 2
Current transformer 5 and the second service entrance switch 6, the second inlet wire current mutual inductor 5, the second service entrance switch 6 and second carry out protection dress
Set 8 connections.Setting segmented current mutual inductor 13 and block switch 14 on sectionalized busbar 11, the segmented current mutual inductor 13,
Block switch 14 is connect with section switch protection device 12.
Several first busbar outlets 15 are connected on the first busbar 9, and several second busbares are connected on the second busbar 10 and are gone out
Line 16 is respectively provided with the first busbar outlet current transformer 19 and the first busbar outlet switch in every first busbar outlet 15
18, the first busbar outlet current transformer 19, the first busbar outlet switch 18 are with configuration in place the first busbar outlet 15
First busbar outlet wire protecting device 17 connects；The second busbar outlet current transformer is respectively provided in every second busbar outlet 16
22 and the second busbar outlet switch 21, the second busbar outlet switch 21, the second busbar outlet current transformer 22 exist with configuration
The second busbar outlet wire protecting device 20 connection in place the second busbar outlet 16.
When work, the first busbar outlet wire protecting device 17 can control the switch shape of the first connected busbar outlet switch 18
State, and when the first busbar outlet switch 18 is in tripping state, then the first busbar where the first busbar outlet switch 18 goes out
Line 15 stops power supply.Similarly, the second busbar outlet wire protecting device 20 can control the switch for connecting the second busbar outlet switch 21
State, section switch protection device 12 can control the on off state of block switch 14.First incoming relay-protection device 7 can control first
The on off state of service entrance switch 4, the second incoming relay-protection device 8 can control the on off state of the second service entrance switch 6.
Usually, for ensure relay protection action selectivity, the first busbar outlet wire protecting device 17, the second busbar outlet
It should be by grade between protective device 20, section switch protection device 12, the first incoming relay-protection device 7 and the second incoming relay-protection device 8
Difference configuration, the first busbar outlet wire protecting device 17, the actuation time of the second busbar outlet wire protecting device 17 are most short, and block switch is protected
The actuation time of protection unit 12 takes second place, and first carries out protective device 7, the actuation time longest of the second incoming relay-protection device 8.In this way
If outgoing line side breaks down, corresponding busbar outlet switch can be made to be in tripping state, prevent block switch 14, first
Service entrance switch 4 or 6 tripping of the second service entrance switch cause the accident expansion.When the first inlet wire 1 or the stoppage in transit of the second inlet wire 2, pass through segmentation
Switch 14 is with corresponding bus run, then and when the bus-bar fault of corresponding operation, can first tripping block switch 14, prevent not
The corresponding service entrance switch tripping of stoppage in transit inlet wire causes the accident expansion.
If carrying out protection seting according to above-mentioned requirements, it is assumed that outlet wire protecting device（First busbar outlet wire protecting device 17 with
And the second busbar outlet wire protecting device 20）Actuation time adjust as tf, then the actuation time of section switch protection device 12 is whole
It is set to tf+ Δ t, incoming relay-protection device（First incoming relay-protection device 7 and the second incoming relay-protection device 8）Actuation time adjust
For tf+ 2 Δ t, wherein Δ t are differential, and the recommendation of microcomputer based relay protective device regulation is taken 0.3 second.Assuming that outlet protection dress
The actuation time set is 0 second, and according to differential configuration, section switch protection device 12 acts at least 0.3 second, and incoming relay-protection device is extremely
It acts within few 0.6 second, after distribution website institute internal unit failure can be caused in this way, main protection（I.e. incoming relay-protection device and segmentation are opened
Close protective device 12）Actuation time is long, has both been unfavorable for quickly cutting off failure, has also increased to adjust with main electric grid relay protection and match
The difficulty of conjunction causes to adjust difficulty.
Invention content
The purpose of the present invention is overcoming the deficiencies in the prior art, provide a kind of power distribution network indulge sequence accelerated motion after
Electric protection system, it is compact-sized, effectively shorten distribution website station institute internal fault main protection actuation time, solve power distribution network and
The problem of major network relay protection setting time coordination difficulty.
According to technical solution provided by the invention, the power distribution network indulges the relay protection system of sequence accelerated motion, including double
The distribution website institute of power supply, the first inlet wire and the second inlet wire included by the distribution website of the dual power supply；First inlet wire
It is connect with the first busbar, the second inlet wire is connect with the second busbar, and the first busbar is connect by sectionalized busbar with the second busbar；First
It is connected with several first busbar outlets on busbar, several second busbar outlets are connected on the second busbar；Is arranged on first inlet wire
The second inlet wire current mutual inductor and the second inlet wire is arranged on the second inlet wire in one inlet wire current mutual inductor and the first service entrance switch
Switch；The first busbar outlet current transformer, the first busbar outlet switch and are mounted in any first busbar outlet
One busbar outlet wire protecting device is mounted on the second busbar outlet current transformer, the second busbar in any second busbar outlet
Outlet switch and the second busbar outlet wire protecting device, sectionalized busbar are equipped with segmented current mutual inductor, block switch and divide
Section switching protective device；
The first all busbar outlet wire protecting devices and the second all busbar outlet wire protecting devices are and block switch
Protective device connects, and section switch protection device is connect with segmented current mutual inductor and block switch；
The sectionalized busbar three-phase current on sectionalized busbar is obtained by segmented current mutual inductor, if sectionalized busbar three-phase current
In at least phase when being more than that preset sectionalized busbar indulges sequence protective current setting valve in section switch protection device, block switch
Protective device carries out timing, and is indulging the long time limit t of sequence action by being segmentedZXLAfterwards, section switch protection device controls block switch
In tripping state.
If the first busbar outlet wire protecting device or/and the second busbar outlet wire protecting device are transmitted to section switch protection device
Outlet overcurrent protection signal, and it is more than segmentation to obtain an at least phase in sectionalized busbar three-phase current by segmented current mutual inductor
When preset sectionalized busbar indulges sequence protective current setting valve in switching protective device, section switch protection device carries out timing, and
Sequence action short duration t is being indulged by being segmentedZXSAfterwards, section switch protection device control block switch is in tripping state.
It is equipped with sectionalized busbar in section switch protection device and indulges sequence protection enable signal, indulging sequence protection in sectionalized busbar makes
Energy signal is in effective enabled state, and the first busbar outlet wire protecting device or/and the second busbar outlet wire protecting device are opened to segmentation
It closes protective device and transmits outlet overcurrent protection signal, and obtained in sectionalized busbar three-phase current not by segmented current mutual inductor
When indulging sequence protective current setting valve more than the sectionalized busbar in section switch protection device, by alarm delay tZXG1Afterwards, it is segmented
Switching protective device output protection alarm signal, and close effective enabled state that sectionalized busbar indulges sequence protection enable signal；
After section switch protection device closes the vertical sequence protection enable signal of sectionalized busbar, if the first busbar outlet protection dress
Set or/and the second busbar outlet wire protecting device to section switch protection device transmit outlet overcurrent protection signal after, prolong through involution
When tZXF1Afterwards, section switch protection device makes sectionalized busbar indulge sequence protection enable signal and reenter effective enabled state.
First inlet wire is equipped with the first incoming relay-protection device, section switch protection device, block switch and all
The first busbar outlet wire protecting device connect with the first incoming relay-protection device；First incoming relay-protection device is also electric with the first inlet wire
Current transformer and the connection of the first service entrance switch；
At least one first busbar outlet wire protecting device transmits the first busbar outlet overcurrent to the first incoming relay-protection device
Protection signal, and it is more than the first inlet wire to obtain an at least phase in the first inlet wire three-phase current by the first inlet wire current mutual inductor
When the first preset inlet wire indulges sequence protective current setting valve in protective device, the first incoming relay-protection device carries out timing, and is passing through
It crosses inlet wire and indulges sequence actuation time tZXS1Afterwards, the first incoming relay-protection device controls the first service entrance switch and is in tripping state.
When block switch is in tripping state, the first bus-bar fault, and the first all busbar outlet wire protecting devices is refused
Dynamic, then it is more than the first incoming relay-protection dress to obtain an at least phase in the first inlet wire three-phase current by the first inlet wire current mutual inductor
When setting interior the first preset inlet wire and indulging sequence protective current setting valve, the first incoming relay-protection device carries out timing, and by inlet wire
Vertical sequence actuation time tZXL1Afterwards, the first incoming relay-protection device controls the first service entrance switch and is in tripping state.
When block switch is in closed state, the second bus-bar fault, block switch divides to the transmission of the first incoming relay-protection device
It is super then to obtain an at least phase in the first inlet wire three-phase current by the first inlet wire current mutual inductor for section switch over-current protection signal
Cross the first inlet wire preset in the first incoming relay-protection device indulge sequence protective current setting valve when, the first incoming relay-protection device is counted
When, and indulging sequence actuation time t by inlet wireZXS2Afterwards, the first incoming relay-protection device controls the first service entrance switch and is in tripping shape
State.
When block switch is in closed state, in the second bus-bar fault, block switch tripping then passes through the first inlet wire electricity
Current transformer obtains the first inlet wire that an at least phase in the first inlet wire three-phase current is more than preset in the first incoming relay-protection device
When vertical sequence protective current setting valve, the first incoming relay-protection device carries out timing, and is indulging sequence actuation time t by inlet wireZXL2Afterwards,
First incoming relay-protection device controls the first service entrance switch and is in tripping state.
It is equipped with the first inlet wire in the first incoming relay-protection device and indulges sequence protection enable signal, indulging sequence protection in the first inlet wire makes
Energy signal is in effective enabled state, and the first busbar outlet wire protecting device transmits outlet overcurrent protection to the first incoming relay-protection device
Signal or/and section switch protection device transmit sectionalized busbar protection signal to the first incoming relay-protection device, and by first into
It is vertical it to be less than the first inlet wire preset in the first incoming relay-protection device in line current mutual inductor the first inlet wire three-phase current of acquisition
When sequence protective current setting valve, the first incoming relay-protection device carries out timing, by alarm delay tZXG2Afterwards, the first incoming relay-protection fills
Output incoming relay-protection alarm signal is set, and closes effective enabled state that the first inlet wire indulges sequence protection enable signal；
The first busbar outlet wire protecting device after the first incoming relay-protection device closes the vertical sequence protection enable signal of the first inlet wire
Outlet overcurrent protection signal or/and section switch protection device are transmitted to the first incoming relay-protection device to the first incoming relay-protection device
After transmitting sectionalized busbar protection signal, through involution delay tZXF2Afterwards, the first incoming relay-protection device makes the first inlet wire indulge sequence protection
Enable signal reenters effective enabled state.
Advantages of the present invention：All the first busbar outlet wire protecting device, the second busbar outlet wire protecting device with segmentation
Switching protective device connects, and the first busbar outlet wire protecting device, section switch protection device and block switch are also with first
Incoming relay-protection device connects, and then effectively realizes the on off state control to block switch, the first service entrance switch, to not change
In the case of becoming existing power distribution station institute structure, distribution website station institute internal fault main protection actuation time is effectively shortened, solve to match
The problem of power grid and major network relay protection setting time coordination difficulty.
Description of the drawings
Fig. 1 for existing distribution website power supply and protection schematic diagram.
Fig. 2 is the schematic diagram of the present invention.
Fig. 3 is another schematic diagram of the present invention.
Reference sign：The first inlet wires of 1-, the second inlet wires of 2-, the first inlet wire currents of 3- mutual inductor, the first inlet wires of 4- are opened
Pass, the second inlet wire currents of 5- mutual inductor, the second service entrance switch of 6-, the first incoming relay-protections of 7- device, the second incoming relay-protections of 8- device,
The first busbares of 9-, the second busbares of 10-, 11- sectionalized busbars, 12- section switch protection devices, 13- segmented currents mutual inductor, 14-
Block switch, the outlet of the first busbares of 15-, the outlet of the second busbares of 16-, the first busbares of 17- outlet wire protecting device, the first busbares of 18-
Outlet switch, 19- the first busbar outlets current transformer, the second busbares of 20- outlet wire protecting device, 21- the second busbar outlets are opened
V+ signals positive power source terminal, 24- sectionalized busbars in pass, 22- the second busbar outlets current transformer, 23- section switch protection devices
Outlet protection overcurrent is opened into light emitting diode, 26- section switch protection devices in connecting pin, the protection of 25- sectionalized busbars in protection
V+ signals positive power source terminal in interior V- signals negative power end, 27- the first incoming relay-protection devices goes out in 28- the first incoming relay-protection devices
Line protection overcurrent opens connecting pin, the first outlet protection light emitting diode, the first inlet wires of 30- in 29- the first incoming relay-protection devices
V- signals negative power end in protective device, the second outlet protection light emitting diode, 32- first in 31- the first incoming relay-protection devices
Sectionalized busbar protection overcurrent opens that connecting pin, block switch shines two in 33- the first incoming relay-protection devices in incoming relay-protection device
Block switch is opened into connecting pin in pole pipe and 34- the first incoming relay-protection devices.
Specific implementation mode
With reference to specific drawings and examples, the invention will be further described.
As shown in Figure 2：In order to effectively shorten distribution website station institute internal fault main protection actuation time, power distribution network is solved
With the problem of major network relay protection setting time coordination difficulty, the present invention includes the distribution website institute of dual power supply, the dual power supply
Distribution website included by the first inlet wire 1 and the second inlet wire 2；First inlet wire 1 is connect with the first busbar 9, the second inlet wire 2
It is connect with the second busbar 10, the first busbar 9 is connect by sectionalized busbar 11 with the second busbar 10；If being connected on the first busbar 9
The first busbar outlet 15 is done, several second busbar outlets 16 are connected on the second busbar 10；First inlet wire electricity is set on the first inlet wire 1
The second inlet wire current mutual inductor 5 and the second service entrance switch is arranged on second inlet wire 2 in current transformer 3 and the first service entrance switch 4
6；Be mounted in any first busbar outlet 15 first busbar outlet current transformer 19, the first busbar outlet switch 18 and
First busbar outlet wire protecting device 17, be mounted in any second busbar outlet 16 second busbar outlet current transformer 22,
Second busbar outlet switch 21 and the second busbar outlet wire protecting device 20, sectionalized busbar 11 are equipped with segmented current mutual inductor
13, block switch 14 and section switch protection device 12；
The first all busbar outlet wire protecting devices 17 and the second all busbar outlet wire protecting devices 20 with segmentation
Switching protective device 12 connects, and section switch protection device 12 is connect with segmented current mutual inductor 13 and block switch 14；
The sectionalized busbar three-phase current on sectionalized busbar 11 is obtained by segmented current mutual inductor 13, if sectionalized busbar three-phase
When an at least phase is more than that sectionalized busbar preset in section switch protection device 12 indulges sequence protective current setting valve in electric current, point
Section switching protective device 12 carries out timing, and is acting long time limit t by being segmented vertical sequenceZXLAfterwards, section switch protection device 12 is controlled
Block switch 14 processed is in tripping state.
Specifically, it is connect with external power supply source by the first inlet wire 1, the second inlet wire 2, the first busbar 9 and the first inlet wire 1
One end connection, the second busbar 10 connect with one end of the second inlet wire 2, and it is right to control the first inlet wire 1 by the first service entrance switch 4
The power supply state of first busbar 9, when the first inlet wire 4 in the closure state, by the first inlet wire 1 can so that the first busbar 9 at
In charging operation state, and when the first inlet wire 4 is in tripping state, being electrically connected between the first busbar 9 and the first inlet wire 1 can be disconnected
It connects, the first busbar 9 is likely to be at off-position at this time.Cooperation between second busbar 10, the second inlet wire 2 and the second service entrance switch 6
Relationship is similar, and details are not described herein again.It is connected by sectionalized busbar 11 between first busbar 9 and the second busbar 10, when sectionalized busbar 11
On block switch 14 when being in tripping state, then be in mutual indepedent state between the first busbar 9 and the second busbar 10, i.e., first
Busbar 9, the electriferous state of the second busbar 10 are mutual indepedent；And the block switch 14 on sectionalized busbar 11 is in the closure state,
Then the electriferous state between the first busbar 9, the second busbar 10 is in synchronous regime, at this point, the electriferous state of the first busbar 9 not only with
The on off state of first inlet wire 1 and the first service entrance switch 4 is related, also with the second inlet wire 2 and the switch of the second service entrance switch 6
State is related, i.e. keeps identical electriferous state between the first busbar 9, the second busbar 10 or keep identical off-position, pass through
First inlet wire 1 or the second inlet wire 10 can ensure the charging operation state of the first busbar 9 or the second busbar 10 simultaneously.
When it is implemented, the first service entrance switch 4, the second service entrance switch 6, block switch 14, the first busbar outlet switch 18
And second busbar outlet switch 21 form of relay may be used, by the first service entrance switch 4, the second service entrance switch 6,
The on off state of block switch 14, the first busbar outlet switch 18 and the second busbar outlet switch 21 realizes different electriferous states
Control process be those skilled in the art known to, details are not described herein again.
In the embodiment of the present invention, the first all busbar outlet wire protecting devices 17 and the second all busbar outlets are protected
Protection unit 20 is connect with section switch protection device 12, i.e., any first busbar outlet wire protecting device 17 and any second mother
Line outlet wire protecting device 20 can transmit outlet overcurrent protection signal to section switch protection device 12；First busbar outlet is protected
Connection relation between device 17, the second busbar outlet wire protecting device 20 and section switch protection device 12 can be with as shown in Figure 1, institute
It protects and fills with block switch in one end of one end, the second busbar outlet wire protecting device 20 for having the first busbar outlet wire protecting device 17
V+ signals positive power source terminal 23 is set in the section switch protection device in 12 to connect, the first busbar outlet wire protecting device 17 it is another
It holds, the other end of the second busbar outlet wire protecting device 20 is opened with outlet protection overcurrent in section switch protection device into connecting pin
24 connect, and outlet protection overcurrent opens connecting pin 24 and light-emitting diodes in section switch protection device in section switch protection device
The anode tap of pipe 25 connects, V- in the cathode terminal and section switch protection device of light emitting diode 26 in section switch protection device
Signal negative power end 26 connects, when the first busbar outlet wire protecting device 17 or the second busbar outlet wire protecting device 20 are to block switch
When protective device 12 transmits outlet overcurrent protection signal, outlet can be obtained by light emitting diode in section switch protection device 25
Overcurrent protection signal, in the specific implementation, the first busbar outlet wire protecting device 17, the second busbar outlet wire protecting device 20 and segmentation
Busbar outlet wire protecting device 12 can also use other connection fit forms, be filled as long as disclosure satisfy that and protected to block switch
It sets and transmits overcurrent protection signal in 12, specifically will not enumerate.
In the embodiment of the present invention, when device fails in power distribution station institute, and when breaking down, the first busbar outlet is protected
Protection unit 17, the second busbar outlet wire protecting device 20 do not transmit outlet overcurrent protection signal to section switch protection device 12
When, the sectionalized busbar three-phase current on sectionalized busbar 11 is obtained by segmented current mutual inductor 13, if sectionalized busbar three-phase current
In at least phase when being more than that preset sectionalized busbar indulges sequence protective current setting valve in section switch protection device 12, segmentation is opened
It closes protective device 12 and carries out timing, and long time limit t is being acted by being segmented vertical sequenceZXLAfterwards, the control point of section switch protection device 12
Duan Kaiguan 14 is in tripping state.When it is implemented, sequence is indulged in segmentation acts long time limit tZXLOvercurrent actuation time is protected according to outlet
Additional necessary time margin is constituted, while considering disabler caused by exception, it is proposed that is taken out line protection longest action and is adjusted
Time additional 150ms delays, sectionalized busbar indulge sequence protective current setting valve, outlet protection overcurrent actuation time and outlet protection
The specific value that longest acts setting time is related to site environment etc., specially known to those skilled in the art, herein not
It repeats again.
Further, if the first busbar outlet wire protecting device 17 or/and the second busbar outlet wire protecting device 20 are opened to segmentation
It closes protective device 12 and transmits outlet overcurrent protection signal, and obtained in sectionalized busbar three-phase current by segmented current mutual inductor 13
When an at least phase is more than that sectionalized busbar preset in section switch protection device 12 indulges sequence protective current setting valve, block switch
Protective device 12 carries out timing, and is indulging sequence action short duration t by being segmentedZXSAfterwards, the control of section switch protection device 12 segmentation
Switch 14 is in tripping state.
In the embodiment of the present invention, it is segmented and indulges sequence action short duration tZXSAccording to outlet protection longest action setting time, outlet
Protection act Outlet time, breaker longest actuation time and necessary time margin are constituted, it is proposed that are taken out line and protected longest
Act additional 100 millisecond time-delay of setting time；Outlet protects longest action setting time, outlet protection act Outlet time, breaks
Road device longest actuation time corresponding specific value is known to those skilled in the art, and details are not described herein again.
Further, it is equipped with sectionalized busbar in section switch protection device 12 and indulges sequence protection enable signal, it is female in segmentation
Line indulges sequence protection enable signal and is in effective enabled state, and the first busbar outlet wire protecting device 17 or/and the second busbar outlet are protected
Protection unit 20 transmits outlet overcurrent protection signal to section switch protection device 12, and is obtained and divided by segmented current mutual inductor 13
When the sectionalized busbar being less than in section busbar three-phase current in section switch protection device 12 indulges sequence protective current setting valve, warp
Cross alarm delay tZXG1Afterwards, 12 output protection alarm signal of section switch protection device, and closing sectionalized busbar is indulged sequence protection and is made
Effective enabled state of energy signal；
After section switch protection device 12 closes the vertical sequence protection enable signal of sectionalized busbar, if the first busbar outlet is protected
After device 17 or/and the second busbar outlet wire protecting device 20 transmit outlet overcurrent protection signal to section switch protection device 12,
Through involution delay tZXF1Afterwards, section switch protection device 12 makes sectionalized busbar is indulged sequence protection enable signal and reentered effectively to make
It can state.
In the embodiment of the present invention, the first busbar outlet wire protecting device 17 or the second busbar outlet wire protecting device 18 in order to prevent
Malfunction, cause section switch protection device 12 to control the mistake of block switch 14, section switch protection device 12 is to first
The Real-time Logic of busbar outlet wire protecting device 17 and the outlet overcurrent protection signal of the second busbar outlet wire protecting device 20 input
Detection.When it is implemented, when closing effective enabled state of the vertical sequence protection enable signal of sectionalized busbar, section switch protection device
12 according to the first busbar outlet wire protecting device 17, the second busbar outlet wire protecting device 20 and can not pass through segmented current mutual inductor
Sequence protective current is indulged in 13 acquisition sectionalized busbar three-phase currents with sectionalized busbar preset in section switch protection device 12 to adjust
Relationship between value controls the on off state of block switch 14, i.e., at this time the on off state of block switch 14 not by above-mentioned situation
Control.Alarm delay tZXG1, involution be delayed tZXF1Specific value can be chosen as needed, under normal circumstances can be true
It is set to 15 seconds.
As shown in Fig. 2, first inlet wire 1 is equipped with the first incoming relay-protection device 7, section switch protection device 12 divides
Duan Kaiguan 14 and the first all busbar outlet wire protecting devices 17 are connect with the first incoming relay-protection device 7；First inlet wire is protected
Protection unit 7 is also connect with the first inlet wire current mutual inductor 3 and the first service entrance switch 4；
At least one first busbar outlet wire protecting device 17 transmits the first busbar outlet to the first incoming relay-protection device 7
Protection signal is flowed, and it is more than first to obtain an at least phase in the first inlet wire three-phase current by the first inlet wire current mutual inductor 3
When the first preset inlet wire indulges sequence protective current setting valve in incoming relay-protection device 7, the first incoming relay-protection device 7 carries out timing,
And indulging sequence actuation time t by inlet wireZXS1Afterwards, the first incoming relay-protection device 7 controls the first service entrance switch 4 and is in tripping shape
State.
In the embodiment of the present invention, by section switch protection device 12, block switch 14 and the first all busbar outlets
Protective device 17 is connect with the first incoming relay-protection device 7, and opening for the first service entrance switch 4 is controlled by the first incoming relay-protection device 7
Off status, so as to further ensure that power distribution station power supply safety.Section switch protection device 12, block switch 14 and institute
Connection matching relationship between the first busbar outlet wire protecting device 17 and the first incoming relay-protection device 7 that have, specially：
All one end of the first busbar outlet wire protecting device 17, one end of section switch protection device 12 and segmentations are opened
One end of pass 14 is connect with V+ signal positive power source terminals in the first incoming relay-protection device in the first incoming relay-protection device 7, Suo You
The other end of one busbar outlet wire protecting device 17 is opened with outlet protection overcurrent in the first incoming relay-protection device and is connect into connecting pin 28,
Outlet protection overcurrent opens the first outlet protection hair in connecting pin 28 and the first incoming relay-protection device in first incoming relay-protection device
The anode tap of optical diode 29 connects, the cathode terminal of the first outlet protection light emitting diode 29 and the in the first incoming relay-protection device
V- signals negative power end 30 connects in one incoming relay-protection device, the other end of section switch protection device 12 and the first incoming relay-protection
Block switch protection overcurrent is opened in device connects into connecting pin 32, in the first incoming relay-protection device block switch protection overcurrent open into
Connecting pin 32 protects the anode tap of light emitting diode 31 to connect with the second outlet in the first incoming relay-protection device, the first incoming relay-protection
V- signals negative power end 30 connects in the cathode terminal and the first incoming relay-protection device of the second outlet protection light emitting diode 31 in device
It connects；Light emitting diode 29 is protected by the first outlet in the first incoming relay-protection device to realize that corresponding first busbar outlet is protected
Device 17 transmits outlet overcurrent protection signal to the first incoming relay-protection device 7, passes through the second outlet in the first incoming relay-protection device
Protection light emitting diode 31 is protected to realize that section switch protection device 12 transmits sectionalized busbar overcurrent to the first incoming relay-protection device 7
Protect signal.
The other end of block switch 14 is connect with the block switch position connecting pins Kai Ru 34 in the first incoming relay-protection device, the
Block switch light-emitting diodes in the block switch position connecting pins Kai Ru 34 and the first incoming relay-protection device in one incoming relay-protection device
The anode tap of pipe 33 connects, the cathode terminal and the first incoming relay-protection of block switch light emitting diode 33 in the first incoming relay-protection device
V- signals negative power end 30 connects in device, can be realized and be divided by block switch light emitting diode 33 in the first incoming relay-protection device
Duan Kaiguan 14 transmits block switch overcurrent protection signal into the first incoming relay-protection device 7.
In the specific implementation, the first busbar outlet wire protecting device 17, section switch protection device 12 and block switch 14
Connection cooperation can also use other forms between the first incoming relay-protection device 7, as long as can meet relevant signal input
, details are not described herein again.
In the embodiment of the present invention, when the device fails connected on the first busbar 9, then corresponding first busbar outlet is protected
Protection unit 17 can transmit outlet overcurrent protection signal to the first incoming relay-protection device 7, at the same time, mutual by the first inlet wire current
It is more than that the first inlet wire preset in the first incoming relay-protection device 7 is vertical that sensor 3, which obtains an at least phase in the first inlet wire three-phase current,
When sequence protective current setting valve, the first incoming relay-protection device 7 carries out timing, and is indulging sequence actuation time t by inlet wireZXS1Afterwards,
First incoming relay-protection device 7 controls the first service entrance switch 4 and is in tripping state.First inlet wire indulges sequence protective current setting valve can be with
It is set as needed, inlet wire indulges sequence actuation time tZXS1Go out according to outlet protection longest action setting time, the first busbar
Line protective device 17 is in actuation time, breaker longest actuation time and the necessary time margin for executing outlet overcurrent protection
It constitutes, it is proposed that take out line protection longest and act additional 100 millisecond time-delay of setting time.
Further, when block switch 14 is in tripping state, 9 failure of the first busbar, and the first all busbar outlets
It is super then to obtain an at least phase in the first inlet wire three-phase current by the first inlet wire current mutual inductor 3 for 17 equal tripping of protective device
Cross the first inlet wire preset in the first incoming relay-protection device 7 indulge sequence protective current setting valve when, the first incoming relay-protection device 7 carry out
Timing, and indulging sequence actuation time t by inlet wireZXL1Afterwards, the first incoming relay-protection device 7 controls the first service entrance switch 4 and is in jump
Open state.
In the embodiment of the present invention, all 17 trippings of the first busbar outlet wire protecting device refer to 9 failure of the first busbar, and
There are when outlet overcurrent, the first busbar outlet wire protecting device 17 is unable to control corresponding first busbar outlet protection switch 18 and jumps
It opens, and outlet overcurrent protection signal cannot be transmitted to section switch protection device 12 and the first incoming relay-protection device 7.Inlet wire is vertical
Sequence actuation time tZXL1It is constituted according to the additional necessary time margin of outlet overcurrent protection contact-actuation time, considers open entry loop
Disabler may be caused extremely, it is proposed that taken out line protection longest and acted additional 150 millisecond time-delay of setting time.
When block switch 14 is in closed state, 10 failure of the second busbar, block switch 14 is to the first incoming relay-protection device 7
Block switch overcurrent protection signal is transmitted, then is obtained in the first inlet wire three-phase current at least by the first inlet wire current mutual inductor 3
When to have a phase be more than that the first inlet wire preset in the first incoming relay-protection device 7 indulges sequence protective current setting valve, the first incoming relay-protection
Device 7 carries out timing, and is indulging sequence actuation time t by inlet wireZXS2Afterwards, the first incoming relay-protection device 7 controls the first inlet wire and opens
It closes 4 and is in tripping state.
In the embodiment of the present invention, when block switch 14 is in closed state, when the second 10 failure of busbar, then fault current stream
Block switch 14 is crossed, at this point, block switch 14 can be to section switch protection device 12 and the transmission point of the first incoming relay-protection device 7
At the same time section switch over-current protection signal is obtained in the first inlet wire three-phase current at least by the first inlet wire current mutual inductor 3
When to have a phase be more than that the first inlet wire preset in the first incoming relay-protection device 7 indulges sequence protective current setting valve, the first incoming relay-protection
Device 7 carries out timing, and is indulging sequence actuation time t by inlet wireZXS2Afterwards, the first incoming relay-protection device 7 controls the first inlet wire and opens
It closes 4 and is in tripping state.When it is implemented, section switch protection device 12 receives the block switch mistake of the transmission of block switch 14
When flowing protection signal, the block switch 14 can be controlled and be in tripping state.Inlet wire indulges sequence actuation time tZXS2It is opened according to segmentation
Close protection longest action setting time, block switch protection act Outlet time（The actuation time of block switch）, breaker most
Long actuation time and necessary time margin are constituted, it is proposed that take additional 100 milli of block switch protection longest action setting time
Second delay.
When block switch 14 is in closed state, in the second 10 failure of busbar, 14 tripping of block switch then passes through first
It is more than preset in the first incoming relay-protection device 7 that inlet wire current mutual inductor 3, which obtains an at least phase in the first inlet wire three-phase current,
When first inlet wire indulges sequence protective current setting valve, the first incoming relay-protection device 7 carries out timing, and when indulging sequence action by inlet wire
Between tZXL2Afterwards, the first incoming relay-protection device 7 controls the first service entrance switch 4 and is in tripping state.
In the embodiment of the present invention, 14 tripping of block switch specifically refers to, when block switch 14 flows through fault current, segmentation
Switching protective device 12 is unable to control block switch 14 and is in tripping state, and cannot transmit and divide to the first incoming relay-protection device 7
Section switch over-current protection signal, is obtained by the first inlet wire current mutual inductor 3 at least one in the first inlet wire three-phase current at this time
When mutually indulging sequence protective current setting valve more than the first inlet wire preset in the first incoming relay-protection device 7, the first incoming relay-protection device 7
Timing is carried out, and sequence actuation time t is being indulged by inlet wireZXL2Afterwards, the first incoming relay-protection device 7 controls at the first service entrance switch 4
In tripping state.Inlet wire indulges sequence actuation time tZXL2According to the additional necessary time margin of block switch overcurrent contact-actuation time
It constitutes, it is proposed that take block switch protection longest action additional 150 millisecond time-delay of setting time.
It is equipped with the first inlet wire in the first incoming relay-protection device 7 and indulges sequence protection enable signal, sequence protection is indulged in the first inlet wire
Enable signal is in effective enabled state, and the first busbar outlet wire protecting device 17 transmits outlet to the first incoming relay-protection device 7
It flows protection signal or/and section switch protection device 12 and transmits sectionalized busbar protection signal to the first incoming relay-protection device 12, and
It is preset in the first incoming relay-protection device 7 by being less than in the first inlet wire current mutual inductor 3 the first inlet wire three-phase current of acquisition
The first inlet wire indulge sequence protective current setting valve when, the first incoming relay-protection device 7 carry out timing, by alarm be delayed tZXG2Afterwards,
First incoming relay-protection device 7 exports incoming relay-protection alarm signal, and closes the first inlet wire and indulge effectively making for sequence protection enable signal
It can state；
The first busbar outlet wire protecting device after the first incoming relay-protection device 7 closes the vertical sequence protection enable signal of the first inlet wire
17 transmit outlet overcurrent protection signal or/and section switch protection device 12 to the first incoming relay-protection device 7 protects to the first inlet wire
After protection unit 7 transmits sectionalized busbar protection signal, through involution delay tZXF2Afterwards, the first incoming relay-protection device 7 is so that the first inlet wire
Vertical sequence protection enable signal reenters effective enabled state.
In the embodiment of the present invention, by the first inlet wire indulge sequence protect enable signal use state control, avoid due to
When first busbar outlet wire protecting device 17, section switch protection device 12 and block switch 14 malfunction, lead to the first inlet wire
Protective device 7 controls the mistake of the first service entrance switch 4, it is ensured that distribution website power supply reliability.
In the specific implementation, for the second incoming relay-protection device 8, the second all busbar outlet wire protecting devices 20 and point
Section switching protective device 12 is connect with the second incoming relay-protection device 8 with block switch 14, and the second incoming relay-protection device 8 is to second
6 on off state of service entrance switch, which controls process, can refer to above-mentioned explanation, and details are not described herein again.
The first all busbar outlet wire protecting device 17 of the present invention, the second busbar outlet wire protecting device 20 are and block switch
Protective device 12 connect, and the first busbar outlet wire protecting device 17, section switch protection device 12 and block switch 14 also with
First incoming relay-protection device 7 connects, and then effectively realizes the on off state control to block switch 14, the first service entrance switch 4, from
And in the case where not changing existing power distribution station institute structure, when the distribution website station institute internal fault main protection that effectively shortens acts
Between, solve the problems, such as that power distribution network and major network relay protection setting time coordination are difficult.
Claims (7)
1. a kind of power distribution network indulges the relay protection system of sequence accelerated motion, include the distribution website institute of dual power supply, the dual power supply
Distribution website included by the first inlet wire（1）And second inlet wire（2）；First inlet wire（1）With the first busbar（9）Connection,
Second inlet wire（2）With the second busbar（10）Connection, the first busbar（9）Pass through sectionalized busbar（11）And block switch（14）With
Two busbares（10）Connection；First busbar（9）On be connected with several first busbar outlets（15）, the second busbar（10）Upper connection is several
Second busbar outlet（16）；First inlet wire（1）The first inlet wire current mutual inductor of upper setting（3）And first service entrance switch（4）, the
Two inlet wires（2）The second inlet wire current mutual inductor of upper setting（5）And second service entrance switch（6）；Any first busbar outlet（15）
On be mounted on the first busbar outlet current transformer（19）, the first busbar outlet switch（18）And first busbar outlet protection
Device（17）, any second busbar outlet（16）On be mounted on the second busbar outlet current transformer（22）, the second busbar goes out
Wiretap（21）And the second busbar outlet wire protecting device（20）, sectionalized busbar（11）It is equipped with segmented current mutual inductor（13）、
Block switch（14）And section switch protection device（12）；It is characterized in that：
The first all busbar outlet wire protecting devices（17）And the second all busbar outlet wire protecting device（20）With segmentation
Switching protective device（12）Connection, section switch protection device（12）With segmented current mutual inductor（13）And block switch（14）
Connection；
Pass through segmented current mutual inductor（13）Obtain sectionalized busbar（11）On sectionalized busbar three-phase current, if sectionalized busbar three-phase
An at least phase is more than section switch protection device in electric current（12）When interior preset sectionalized busbar indulges sequence protective current setting valve,
Section switch protection device（12）Timing is carried out, and the long time limit t of sequence action is being indulged by being segmentedZXLAfterwards, section switch protection device
（12）Control block switch（14）In tripping state；
Wherein, first inlet wire（1）It is equipped with the first incoming relay-protection device（7）, section switch protection device（12）, segmentation open
It closes（14）And the first all busbar outlet wire protecting device（17）With the first incoming relay-protection device（7）Connection；First inlet wire
Protective device（7）Also with the first inlet wire current mutual inductor（3）And first service entrance switch（4）Connection；
At least one first busbar outlet wire protecting device（17）To the first incoming relay-protection device（7）Transmit the first busbar outlet
Protection signal is flowed, and passes through the first inlet wire current mutual inductor（3）It is more than the to obtain in the first inlet wire three-phase current an at least phase
One incoming relay-protection device（7）When interior the first preset inlet wire indulges sequence protective current setting valve, the first incoming relay-protection device（7）It carries out
Timing, and indulging sequence actuation time t by inlet wireZXS1Afterwards, the first incoming relay-protection device（7）Control the first service entrance switch（4）Place
In tripping state.
2. power distribution network according to claim 1 indulges the relay protection system of sequence accelerated motion, it is characterized in that：If the first busbar
Outlet wire protecting device（17）Or/and the second busbar outlet wire protecting device（20）To section switch protection device（12）Transmit outlet
Protection signal is flowed, and passes through segmented current mutual inductor（13）It is more than that segmentation is opened to obtain an at least phase in sectionalized busbar three-phase current
Close protective device（12）When interior preset sectionalized busbar indulges sequence protective current setting valve, section switch protection device（12）It is counted
When, and indulging sequence action short duration t by being segmentedZXSAfterwards, section switch protection device（12）Control block switch（14）In jump
Open state.
3. power distribution network according to claim 2 indulges the relay protection system of sequence accelerated motion, it is characterized in that：In block switch
Protective device（12）The interior sectionalized busbar that is equipped with indulges sequence protection enable signal, and indulging sequence protection enable signal in sectionalized busbar is in effective
Enabled state, the first busbar outlet wire protecting device（17）Or/and the second busbar outlet wire protecting device（20）It is protected to block switch
Device（12）Outlet overcurrent protection signal is transmitted, and passes through segmented current mutual inductor（13）It obtains in sectionalized busbar three-phase current
It is less than section switch protection device（12）When interior sectionalized busbar indulges sequence protective current setting valve, by alarm delay tZXG1
Afterwards, section switch protection device（12）Output protection alarm signal, and close sectionalized busbar and indulge the effective of sequence protection enable signal
Enabled state；
In section switch protection device（12）After closing the vertical sequence protection enable signal of sectionalized busbar, if the first busbar outlet protection dress
It sets（17）Or/and the second busbar outlet wire protecting device（20）To section switch protection device（12）Transmit outlet overcurrent protection signal
Afterwards, through involution delay tZXF1Afterwards, section switch protection device（12）It is reentered so that sectionalized busbar indulges sequence protection enable signal
Effective enabled state.
4. power distribution network according to claim 1 indulges the relay protection system of sequence accelerated motion, it is characterized in that：Work as block switch
（14）In tripping state, the first busbar（9）Failure, and the first all busbar outlet wire protecting devices（17）Equal tripping, then lead to
Cross the first inlet wire current mutual inductor（3）It is more than the first incoming relay-protection device to obtain an at least phase in the first inlet wire three-phase current
（7）When interior the first preset inlet wire indulges sequence protective current setting valve, the first incoming relay-protection device（7）Timing is carried out, and is being passed through
Inlet wire indulges sequence actuation time tZXL1Afterwards, the first incoming relay-protection device（7）Control the first service entrance switch（4）In tripping state.
5. power distribution network according to claim 1 indulges the relay protection system of sequence accelerated motion, it is characterized in that：Work as block switch
（14）In closed state, the second busbar（10）Failure, block switch（14）To the first incoming relay-protection device（7）Transmission segmentation is opened
Overcurrent protection signal is closed, then passes through the first inlet wire current mutual inductor（3）It is super to obtain an at least phase in the first inlet wire three-phase current
Cross the first incoming relay-protection device（7）When interior the first preset inlet wire indulges sequence protective current setting valve, the first incoming relay-protection device（7）
Timing is carried out, and sequence actuation time t is being indulged by inlet wireZXS2Afterwards, the first incoming relay-protection device（7）Control the first service entrance switch
（4）In tripping state.
6. power distribution network according to claim 1 indulges the relay protection system of sequence accelerated motion, it is characterized in that：Work as block switch
（14）In closed state, in the second busbar（10）When failure, block switch（14）Tripping then passes through the first inlet wire current mutual inductance
Device（3）It is more than the first incoming relay-protection device to obtain an at least phase in the first inlet wire three-phase current（7）Interior the first preset inlet wire
When vertical sequence protective current setting valve, the first incoming relay-protection device（7）Timing is carried out, and sequence actuation time t is being indulged by inlet wireZXL2
Afterwards, the first incoming relay-protection device（7）Control the first service entrance switch（4）In tripping state.
7. power distribution network according to claim 1 indulges the relay protection system of sequence accelerated motion, it is characterized in that：In the first inlet wire
Protective device（7）It is inside equipped with the first inlet wire and indulges sequence protection enable signal, indulging sequence protection enable signal in the first inlet wire is in effective
Enabled state, the first busbar outlet wire protecting device（17）To the first incoming relay-protection device（7）Transmit outlet overcurrent protection signal or/
And section switch protection device（12）To the first incoming relay-protection device（12）Transmit sectionalized busbar protection signal, and by first into
Line current mutual inductor（3）It obtains and is less than the first incoming relay-protection device in the first inlet wire three-phase current（7）Interior preset first
When inlet wire indulges sequence protective current setting valve, the first incoming relay-protection device（7）Timing is carried out, by alarm delay tZXG2Afterwards, first
Incoming relay-protection device（7）Incoming relay-protection alarm signal is exported, and closes the first inlet wire and indulges the effective enabled of sequence protection enable signal
State；
In the first incoming relay-protection device（7）It closes the first inlet wire and indulges the first busbar outlet wire protecting device after sequence protection enable signal
（17）To the first incoming relay-protection device（7）Transmit outlet overcurrent protection signal or/and section switch protection device（12）To first
Incoming relay-protection device（7）After transmitting sectionalized busbar protection signal, through involution delay tZXF2Afterwards, the first incoming relay-protection device（7）Make
It obtains the vertical sequence protection enable signal of the first inlet wire and reenters effective enabled state.
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| CN201610681053.3A CN106159917B (en) | 2016-08-16 | 2016-08-16 | Power distribution network indulges the relay protection system of sequence accelerated motion |
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| CN106887829B (en) * | 2017-03-28 | 2019-01-11 | 国网江西省电力公司电力科学研究院 | A kind of configuration of 10 KV line two class protection of single supply and fixed value adjusting method |
| CN106998061B (en) * | 2017-03-28 | 2019-01-15 | 国网江西省电力公司电力科学研究院 | A kind of protection three-level configuration of 10 KV line of single supply and fixed value adjusting method |
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