CN107465177A - A kind of power distribution network low current grounding partition method based on regional agency - Google Patents
A kind of power distribution network low current grounding partition method based on regional agency Download PDFInfo
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- CN107465177A CN107465177A CN201710941201.5A CN201710941201A CN107465177A CN 107465177 A CN107465177 A CN 107465177A CN 201710941201 A CN201710941201 A CN 201710941201A CN 107465177 A CN107465177 A CN 107465177A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005192 partition Methods 0.000 title claims abstract description 31
- 230000009471 action Effects 0.000 claims abstract description 98
- 238000002955 isolation Methods 0.000 claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims abstract description 5
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000001052 transient effect Effects 0.000 claims description 16
- 238000004891 communication Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000011218 segmentation Effects 0.000 description 8
- 230000001934 delay Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000007634 remodeling Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—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 for meshed systems
Abstract
A kind of power distribution network low current grounding partition method based on regional agency, belongs to Distribution Automation Technology field.Comprise the following steps：Step a, set agent territory and regional agency terminal；Step b, the fault actions time switched in Configuration Agent region；Step c, judge whether low current grounding occurs in power distribution network；Step d, the switch time delay positioned at trouble point upstream act；Step e, realize the isolation of trouble point；Step f, it is determined that the interconnection switch and the interconnection switch that closes a floodgate of needs action；Step g, update the topological network of power distribution network；Step h, reconfigure the fault actions time of line switching in agent territory.Based on the power distribution network low current grounding partition method of regional agency by setting agent territory and regional agency terminal, independent of communication and main station system, rely solely on local amount and realize that low current grounding is isolated, reliability is higher.
Description
Technical field
A kind of power distribution network low current grounding partition method based on regional agency, belong to Distribution Automation Technology neck
Domain.
Background technology
At present, the protection seting of power distribution network relay and configuration imperfection, particularly in small current neutral grounding system, are lacked at present
Few reliable low current grounding protective separation method.In the prior art, rely primarily on power distribution automation and realize that failure is determined
Position, Fault Isolation and restore electricity, power distribution automation by communication network failure rate height, back-up source short life, management service with
Not first-class factor influences, and actual motion effect is undesirable.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, there is provided one kind is by setting agent territory
And regional agency terminal, independent of communication and main station system, rely solely on local amount and realize that low current grounding is isolated,
The higher power distribution network low current grounding partition method based on regional agency of reliability.
The technical solution adopted for the present invention to solve the technical problems is：The power distribution network low current based on regional agency connects
Earth fault partition method, multiple power supplys are provided with power distribution network, outlet switch is provided with the power output end of each power supply, if
The interconnection switch that multiple reset conditions are in point position is equipped with, two adjacent outlet switchs are isolated, gone out by interconnection switch
Some line switchings are additionally provided between wiretap and interconnection switch, low current grounding betides any position of power distribution network
Put, it is characterised in that：Comprise the following steps：
Step a, the power distribution network is divided into multiple agent territories, and a regional agency is set in each agent territory
Terminal；
Step b, the fault actions time of outlet switch and line switching in Configuration Agent region；
Step c, judge whether low current grounding occurs in power distribution network；If low current grounding does not occur, circulate
This step is performed, in the event of low current grounding, performs step d；
Step d, after low current grounding occurs in circuit, it is located at failure by what abort situation basis for estimation judged to obtain
The outlet switch or line switching of point upstream, outlet switch or line switching prolong according to the fault actions time configured in step b
When act；
Step e, the line switching separating brake of regional agency terminal control trouble point downstream, realizes the isolation of trouble point；
Step f, it is determined that the interconnection switch and the interconnection switch that closes a floodgate of needs action；
Step g, update the topological network of power distribution network；
Step h, reconfigure the fault actions time of line switching in agent territory.
Preferably, in described step a, area is acted on behalf of in the land between outlet switch and interconnection switch for described
Domain, outlet switch is in itself as the regional agency terminal in agent territory.
Preferably, in described step b, the setting principle of fault actions time is：It is located at main line in agent territory
On line switching, the fault actions time using outlet switch as starting point line switching downstream shortens successively, and outlet switch
Itself participates in the configuration of fault actions time, and interconnection switch is not involved in the configuration of fault actions time, is connected to main line in itself
On branched line switch the fault actions time be less than main line on any one line switching the fault actions time.
Preferably, described line switching is that the ring main unit of ring main unit in the block switch or cable run in overhead line is opened
Close.
Preferably, described outlet switch, interconnection switch and line switching, which use, can detect zero-sequence current and zero simultaneously
The integral switch of sequence voltage.
Preferably, the abort situation basis for estimation described in step d is：The transient reactive power of trouble point upstream be it is negative,
The transient reactive power of trouble point downstream is just.
Preferably, in step c using transient reactive power method to whether described low current grounding occurring sentencing
It is disconnected.
Preferably, the determination of the interconnection switch for needing to act described in step f is according to being：With low current grounding occurs
The adjacent interconnection switch in agent territory in the maximum interconnection switch of spare capacity be needs action interconnection switch.
Compared with prior art, beneficial effect possessed by the present invention is：
1st, based on the power distribution network low current grounding partition method of regional agency by setting agent territory and region generation
Terminal is managed, independent of communication and main station system, local amount is relied solely on and realizes that low current grounding is isolated, reliability is more
It is high.
2nd, in the power distribution network low current grounding partition method based on regional agency, prison in real time is realized using communication
The displacement information of all switches in topology is surveyed, the real-time update of topology is carried out when topological structure changes, according to real-time topology knot
Structure adjusts action delay, ensure that the quick-action and selectivity of protection.Regional agency equipment is according to all information acquisitions of return
Feeder line real-time topology, it is reliable and stable.
3rd, can real-time query network topology structure, different failure delay times, strong applicability are used according to different topology.
4th, regional agency terminal is allocated to each switch fault-motion time, and adaptability is wide.
5th, regional agency equipment detection switch displacement information, when having change, is transmitted to main website, prevents from reporting by mistake.
6th, after line failure, switch coordinates trip operation excision fault section, interconnection switch interoperation, realizes
Fault section isolation, switch trip action excision failure, regional agency equipment generate new according to the breakdown switch position of system
Topological structure, configures the suitable switch time delay time, recovers fault section power supply, avoid power distribution network is caused it is more serious
Loss.Using the method for regional agency device configuration switch motion time, power supply reliability is remarkably improved.
Brief description of the drawings
Fig. 1 is the power distribution network low current grounding partition method flow chart based on regional agency.
Fig. 2 is the power distribution network low current grounding partition method overhead line schematic network structure based on regional agency.
Aerial gauze when Fig. 3 is power distribution network low current grounding partition method 1 failure of embodiment based on regional agency
Network structural representation.
Fig. 4 is overhead line net after the failure of power distribution network low current grounding partition method embodiment 1 based on regional agency
Network structural representation.
Aerial gauze when Fig. 5 is power distribution network low current grounding partition method 2 failure of embodiment based on regional agency
Network structural representation.
Fig. 6 is overhead line net after the failure of power distribution network low current grounding partition method embodiment 2 based on regional agency
Network structural representation.
Aerial gauze when Fig. 7 is power distribution network low current grounding partition method 3 failure of embodiment based on regional agency
Network structural representation.
Fig. 8 is overhead line net after the failure of power distribution network low current grounding partition method embodiment 3 based on regional agency
Network structural representation.
Fig. 9 is that the cable system structure of power distribution network low current grounding partition method embodiment 4 based on regional agency is shown
It is intended to.
When Figure 10 is the power distribution network low current grounding partition method 4 cable system failure of embodiment based on regional agency
Structural representation.
When Figure 11 is the power distribution network low current grounding partition method 5 cable system failure of embodiment based on regional agency
Structural representation.
When Figure 12 is the power distribution network low current grounding partition method 6 cable system failure of embodiment based on regional agency
Structural representation.
Embodiment
Fig. 1 ~ 4 are highly preferred embodiment of the present invention, and 1 ~ 12 the present invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in figure 1, a kind of power distribution network low current grounding partition method based on regional agency, comprises the following steps：
Step 1001, setting area proxy terminal and agent territory is divided；
In the present embodiment, by taking overhead line network as an example, three power supplys are provided with overhead line network as shown in Figure 2：Electricity
Source T1, power supply T2 and power supply T3, it is additionally provided with power outlet switch：Outlet switch QS1 ~ outlet switch QS3, outlet switch
QS1 ~ outlet switch QS3 connections corresponding with power supply T1, power supply T2 and power supply T3 respectively.In outlet switch QS1 and outlet switch
Five block switches are once connected between QS2：Block switch Q1 ~ block switch Q5, wherein block switch Q3 are defined as getting in touch with
Switch.Outlet switch QS3 leading-out terminals are connected with five block switches in turn：Block switch Q12 ~ block switch Q8, wherein being segmented
Switch Q8 is connected between block switch Q2 ~ block switch Q3, and block switch Q10 is defined as interconnection switch.In block switch Q1
Opened between block switch Q2 and be parallel with block switch Q6, opened between interconnection switch Q3 and block switch Q4 and be parallel with segmentation and open
Close Q7.Block switch and interconnection switch are realized using the integral switch of detectable zero-sequence current and residual voltage simultaneously.
In fig. 2, white box body surface shows the switch in point position, and black box body surface shows in the switch for closing position.
The outlet switch being connected with power supply is defined as regional agency terminal, and using interconnection switch as boundary, by interconnection switch
The agent territory that region between adjacent regional agency terminal is acted on behalf of as the regional agency terminal, interconnection switch can be drawn
Enter in any one agent territory.
Regional agency terminal, wherein outlet are respectively defined as with reference to Fig. 2, wherein outlet switch QS1 ~ outlet switch QS3
The agent territory that switch QS1 is acted on behalf of includes：Block switch Q1, block switch Q2, block switch Q6, block switch Q8 and point
Duan Kaiguan Q9 and interconnection switch Q3 and interconnection switch Q10；The agent territory that outlet switch QS3 is acted on behalf of includes：Block switch
Q11 ~ block switch Q13；The agent territory that outlet switch QS2 is acted on behalf of includes：Block switch Q4, block switch Q5, segmentation are opened
Close Q7 and block switch Q13.
Step 1002, the fault actions time switched in Configuration Agent region；
The fault actions time of main line upper switch in each agent territory, the setting principle of its fault actions time are set
For：Switch in agent territory between outlet switch and interconnection switch on the main line, it is starting point under it using outlet switch
The fault actions time of the switch of trip shortens successively, and outlet switch participates in the configuration of fault actions time, interconnection switch in itself
The configuration of fault actions time itself is not involved in, the fault actions time for the branched line switch being connected on main line is less than master
The fault actions time of any one line switching on circuit.
With reference to Fig. 2, the agent territory that outlet switch QS1 is acted on behalf of includes：Block switch Q1, block switch Q2, segmentation are opened
Q6, block switch Q8 and block switch Q9 and interconnection switch Q3 and interconnection switch Q10 are closed, segmentation is included wherein on main line
Switch Q1, block switch Q2, block switch Q8 and block switch Q9, block switch Q9 are located at the most lower of corresponding agent territory
Trip, block switch Q9, block switch Q8, block switch Q2 and block switch Q1 fault actions time are followed successively by：1s, 2s,
3s and 4s, outlet switch QS1 the fault actions time are 5s.Block switch Q6 is branch switch, block switch Q6 failure
Actuation time is less than the fault actions time that any one in main line switchs, in the present embodiment, block switch Q6 failure
Actuation time is set as 0.5s.
Similarly, in the region that outlet switch QS2 is acted on behalf of, block switch Q4, block switch Q5 and outlet switch QS2
The fault actions time be followed successively by：1s, 2s and 3s；In the region that outlet switch QS3 is acted on behalf of, block switch Q11, segmentation
The switch Q12 and outlet switch QS3 fault actions time is followed successively by：1s, 2s and 3s.Acted on behalf of in outlet switch QS3
In region, block switch Q7 and block switch Q13 are branch switch, therefore block switch Q7 and block switch Q13 failure
Actuation time is less than the fault actions time that any one in main line switchs, in the present embodiment, block switch Q7 and segmentation
The switch Q13 fault actions time is set as 0.5s.
Step 1003, judge whether that low current grounding occurs；
Whether low current grounding occurs in circuit, if low current grounding does not occur, circulation performs this step, such as
Low current grounding occurs for fruit, performs step 1004.The transient reactive power of failure definition point upstream is negative, trouble point simultaneously
The transient reactive power in downstream is just.
Step 1004, trouble point upstream switch delay excision；
After low current grounding occurs in circuit, the switch of trouble point upstream detects failure and according in step 1002
The fault actions time of configuration is acted.
Step 1005, separating brake trouble point downstream switchs, isolated fault point；
Outlet switch controls the block switch separating brake of trouble point downstream, realizes the isolation of fault zone.
With reference to Fig. 3, when trouble point K1 is located at block switch Q1 downstream, block switch Q1 and outlet switch QS1 inspections
Failure is measured, and judges that transient reactive power is negative value, therefore trouble point is located at block switch Q1 downstream, therefore segmentation is opened
Close Q1 delays 4s to disconnect afterwards, after block switch Q1 actions, the residual voltage that outlet switch QS1 is detected is disappeared, and outlet is opened
QS1 is closed without deferred action, and outlet switch QS1 receive judge after block switch Q1 action message trouble point positioned at point
In the region that Duan Kaiguan Q1 downstream, i.e. block switch Q1, block switch Q2 and block switch Q6 are formed, outlet switch
QS1, which sends instruction, disconnects block switch Q2 and block switch Q6, completes the isolation of fault section.
Step 1006, it is determined that the interconnection switch and the interconnection switch that closes a floodgate of needs action；；
The regional agency terminal of agent territory where trouble point compares spare capacity in contiguous agent region according to interconnection switch
Size, it is determined that the wherein maximum agent territory of spare capacity, and by adjacent thereto standby in the agent territory where trouble point
Interconnection switch between the maximum agent territory of capacity is defined as needing the interconnection switch recovered, and the interconnection switch is closed a floodgate.
With reference to Fig. 4, outlet switch QS1 compares interconnection switch Q10 and interconnection switch Q3 spare capacity, it is assumed that interconnection switch
Q10 spare capacity is more than interconnection switch Q3 spare capacity, then outlet switch QS1, which sends instruction, closes interconnection switch Q10,
Can be block switch Q10 after interconnection switch Q10 closures.
Step 1007, topological network is updated；
After interconnection switch closes a floodgate, regional agency terminal establishes network real-time topology according to the displacement information of switch.
As shown in figure 4, disconnect block switch Q1, block switch Q2 and block switch Q6 according to above-mentioned steps, and
After interconnection switch Q10 is closed, without in the block switch for closing position in the agent territory that outlet switch QS1 is acted on behalf of, only wrap
Wiretap QS1 is included, the agent territory that outlet switch QS2 is acted on behalf of includes：Block switch Q8 ~ block switch Q12；Outlet switch
The agent territory that QS3 is acted on behalf of includes：Block switch Q4, block switch Q5, block switch Q7 and block switch Q13.
Step 1008, the fault actions time of switch in regional agency is reconfigured；
According to the setting principle of above-mentioned fault actions time, when regional agency terminal center configures the fault actions of switch in it
Between.
With reference to Fig. 4, by the outlet switch QS1 agent territories acted on behalf of only include outlet switch QS1, therefore outlet switch
The QS1 fault actions time is configured to 1s；In the region that outlet switch QS2 is acted on behalf of, block switch Q8 ~ Q12 failure is moved
Make the time is configured to 1s, 2s, 3s, 4s, 5s successively, and the outlet switch QS2 fault actions time is configured to 6s；Due to outlet switch
What is switched in the agent territory that QS3 is acted on behalf of does not conjugate, therefore the fault actions time respectively switched in it does not change,
I.e. in the region that outlet switch QS3 is acted on behalf of, block switch Q11, block switch Q12 and outlet switch QS3 failure are moved
Making the time is followed successively by：1s, 2s and 3s.
Specific work process and operation principle are as follows：
In a certain section of power distribution network, each outlet switch in power distribution network is configured to regional agency terminal first, then with connection
Network switch is boundary, and the region between interconnection switch and adjacent regional agency terminal is acted on behalf of as the regional agency terminal
Agent territory.Then the configuration of fault actions time is carried out to the switch in each agent territory, concrete configuration principle is：Go out
Switch in agent territory between wiretap and interconnection switch on the main line, using outlet switch as starting point opening downstream
The fault actions time of pass shortens successively, and outlet switch participates in the configuration of fault actions time in itself, and interconnection switch is in itself not
Participate in the configuration of fault actions time.
Whether low current grounding occurs in circuit, after low current grounding occurs in power distribution network, according to event
The transient reactive power of barrier point upstream is negative, and the transient reactive power of trouble point downstream is positive principle, positioned at trouble point upstream
The fault actions time delayses that are configured according to it of switch act, regional agency terminal is sentenced according to switch motion information after action
A disconnected region at place of being out of order, and the block switch separating brake of trouble point downstream is controlled, realize the isolation of fault zone.
The regional agency terminal of agent territory where trouble point compares standby in contiguous agent region according to interconnection switch
The size of capacity, it is determined that the wherein maximum agent territory of spare capacity, and the agent territory where trouble point is adjacent thereto
Interconnection switch between the maximum agent territory of spare capacity is defined as service restoration switch, and will open interconnection switch combined floodgate.Connection
After network switch closes a floodgate, regional agency terminal establishes network real-time topology, and configuring area again according to the displacement information of switch
The fault actions time of switch in agency.
Embodiment 2：
In the present embodiment, the original state of power distribution network is identical with the power distribution network network shown in Fig. 2, it is assumed that trouble point K2 occurs
In the agent territory that outlet switch QS3 is acted on behalf of, specifically occur between block switch Q5 and outlet switch QS2, such as Fig. 5 institutes
Show.
After the K2 that breaks down occurs, outlet switch QS2 judges that transient reactive power is negative value, i.e. outlet switch
QS2 is located at trouble point K2 upstream, then outlet switch QS2 should disconnect, and after configured actuation time is reached, outlet is opened
Close QS2 to disconnect, and sending instruction disconnects the block switch Q5 in trouble point K2 downstreams, the isolation of fault section is realized, such as Fig. 6 institutes
Show.
Then outlet switch QS2 compares interconnection switch Q3 and interconnection switch Q10 spare capacity, it is assumed that interconnection switch
Q10 spare capacity is less than interconnection switch Q3 spare capacity, then outlet switch QS1, which sends instruction, closes interconnection switch Q3,
Can be block switch Q3 after interconnection switch Q3 closures.
After block switch Q5 and outlet switch QS2 is disconnected according to above-mentioned steps and closes interconnection switch Q3,
The agent territory that outlet switch QS1 is acted on behalf of includes：Block switch Q1 ~ block switch Q4, block switch Q6 ~ block switch Q9 with
And block switch Q13, without in the block switch for closing position in the agent territory that outlet switch QS2 is acted on behalf of, only opened including outlet
QS2 is closed, the agent territory that outlet switch QS3 is acted on behalf of includes：Block switch Q11, block switch Q12.
Then the fault actions time of switch in regional agency is reconfigured, it is specific as follows：Acted on behalf of in outlet switch QS1
Agent territory in, block switch Q9 and block switch Q4 the fault actions time are 1s, block switch Q8 and block switch Q3
The fault actions time be 2s, block switch Q2, block switch Q1 and outlet switch QS1 the fault actions time are followed successively by：
3s、4s、5s.In the region that outlet switch QS3 is acted on behalf of, block switch Q11, block switch Q12 and outlet switch QS3's
The fault actions time is followed successively by：1s, 2s and 3s.In the agent territory that outlet switch QS2 is acted on behalf of, due to not locating
A point position state is also in itself in the switch and outlet switch QS2 for closing position, therefore in the agent territory that outlet switch QS2 is acted on behalf of
Interior, not switching needs to reconfigure the fault actions time.
Embodiment 3：
In the present embodiment, the original state of power distribution network is identical with the power distribution network network shown in Fig. 2, it is assumed that trouble point K3 occurs
In the agent territory that outlet switch QS2 is acted on behalf of, specifically occur between block switch Q11 and block switch Q12, such as Fig. 7 institutes
Show.
After the K3 that breaks down occurs, outlet switch QS3 and block switch Q12 judge that transient reactive power is negative
Value, i.e. outlet switch QS3 and block switch Q12 are located at trouble point K2 upstream, then outlet switch QS2 and block switch Q12 should
Work as disconnection, after configured actuation time is reached, block switch Q12 disconnects first, after block switch Q12 actions, goes out
The residual voltage that wiretap QS3 is detected disappears, and outlet switch QS3 is without deferred action, and outlet switch QS3 receives segmentation
The action message for switching Q12 judges that trouble point is located at block switch Q12 downstream, i.e. block switch Q11 and block switch afterwards
In the region that Q12 is formed, outlet switch QS3, which sends instruction, disconnects block switch Q11, completes the isolation of fault section, such as
Shown in Fig. 8.
Then outlet switch QS3 compares interconnection switch Q3 and interconnection switch Q10 spare capacity, it is assumed that interconnection switch
Q10 spare capacity is more than interconnection switch Q3 spare capacity, then outlet switch QS3, which sends instruction, closes interconnection switch Q10,
Can be block switch Q10 after interconnection switch Q10 closures.
After being disconnected according to above-mentioned steps by block switch Q11, block switch Q11 and closing interconnection switch Q10, go out
The agent territory that wiretap QS1 is acted on behalf of includes：Block switch Q1, block switch Q2, block switch Q6, block switch Q8 ~ point
Duan Kaiguan Q10, the agent territory that outlet switch QS2 is acted on behalf of include：Block switch Q4, block switch Q5, block switch Q7 with
And block switch Q13.Without in the block switch for closing position in the agent territory that outlet switch QS3 is acted on behalf of, only opened including outlet
Close QS3.
Then the fault actions time of switch in regional agency is reconfigured, it is specific as follows：Acted on behalf of in outlet switch QS1
Agent territory in, block switch Q10, block switch Q9, block switch Q8, block switch Q2, block switch Q1 and outlet
The fault actions time corresponding to switch QS1 is followed successively by 1s ~ 6s, in the region that outlet switch QS2 is acted on behalf of, block switch
Q4, block switch Q5 and outlet switch QS2 the fault actions time are followed successively by：1s, 2s and 3s；In outlet switch QS3 institutes
In the region of agency, the fault actions time corresponding to outlet switch QS3 is 1s.
Embodiment 4：
In the present embodiment, illustrated with the expression-form of cable system：It is provided with overhead line network as shown in Figure 9
Three power supplys：Power supply T1, power supply T2 and power supply T3, it is additionally provided with power outlet switch：Outlet switch QS1 ~ outlet switch
QS3, outlet switch QS1 ~ outlet switch QS3 are respectively power supply T1, power supply T2 and power supply T3 outlet switch.In outlet switch
Four ring main units are once connected between QS1 and outlet switch QS2：Ring main unit H1 ~ ring main unit H5, wherein ring main unit H1 include two
Individual looped network cabinet switch：Looped network cabinet switch Q11, looped network cabinet switch Q12, in addition to two outlet branch switches：Outlet branch switch
Q111 and outlet branch switch Q112；Ring main unit H2 includes two looped network cabinet switchs：Looped network cabinet switch Q21, looped network cabinet switch
Q22, in addition to two outlet branch switches：Outlet branch switch Q211 and outlet branch switch Q212；Ring main unit H3 includes two
Individual looped network cabinet switch：Looped network cabinet switch Q31, looped network cabinet switch Q32, in addition to two outlet branch switches：Outlet branch switch
Q311 and outlet branch switch Q312；Ring main unit H4 includes two looped network cabinet switchs：Looped network cabinet switch Q41, looped network cabinet switch
Q42, in addition to two outlet branch switches：Outlet branch switch Q411 and outlet branch switch Q412.
Power supply T1 passes through outlet switch QF1 connection ring main units H1 looped network cabinet switch Q11, ring main unit H1 looped network cabinet switch
Q12 connection ring main units H2 looped network cabinet switch Q21, ring main unit H2 looped network cabinet switch Q22 connection ring main units H3 ring main unit are opened
Close Q31, ring main unit H3 looped network cabinet switch Q32 connection ring main units H4 looped network cabinet switch Q41, ring main unit H4 looped network cabinet switch
Q42 passes through outlet switch QF2 connection power supplys T2.
Ring main unit H2 outlet branch switch Q211 is by switching Q7, ring main unit H5, ring main unit H6 and outlet switch QF3
Power supply 3 is connected, wherein ring main unit H5 includes two looped network cabinet switchs：Looped network cabinet switch Q51, looped network cabinet switch Q52, in addition to two
Individual outlet branch switch：Outlet branch switch Q511 and outlet branch switch Q512；Ring main unit H6 includes two looped network cabinet switchs：
Looped network cabinet switch Q61, looped network cabinet switch Q62, in addition to two outlet branch switches：Outlet branch switch Q611 and outlet branch
Switch Q612.
Ring main unit H2 outlet branch switch Q211 is by switching Q7 connection ring main units H5 looped network cabinet switch Q51, looped network
Cabinet H5 looped network cabinet switch Q52 connection ring main units H6 looped network cabinet switch Q61, ring main unit H6 looped network cabinet switch Q62 is by going out
Wiretap QF3 connection power supplys T3.
Monitoring of electric power terminal DTU1 ~ monitoring of electric power terminal DTU6 corresponding with above-mentioned ring main unit H1 ~ ring main unit H6 difference
It is connected respectively with control main website S1 by network.Looped network cabinet switch Q31 in above-mentioned switch Q7 and ring main unit H3 be in
Divide the interconnection switch of position.The above-mentioned outlet switch being connected with power supply, interconnection switch, branch's outlet switch in ring main unit and is opened
Q7 is closed to realize using the integral switch of detectable zero-sequence current and residual voltage simultaneously.
In cable system figure as shown in Figure 9, being connect based on the power distribution network low current of regional agency with reference to shown in Fig. 1
The flow of earth fault partition method：
For step 1001：Outlet switch QF1 ~ outlet switch QF3 is respectively defined as regional agency terminal, wherein outlet is opened
Closing the agent territory that QF1 is acted on behalf of includes：Ring main unit H1, ring main unit H2, ring main unit H3 and interconnection switch Q7；Outlet switch
The agent territory that QF2 is acted on behalf of includes：Ring main unit H3 and ring main unit H4, outlet switch QF3 agent territory include ring main unit H5,
Ring main unit H6 and interconnection switch Q7.
For step 1002：The fault actions time switched in Configuration Agent region；
According to above-mentioned：Switch in agent territory between outlet switch and interconnection switch on main line, with outlet switch
The fault actions time for the switch of starting point downstream shortens successively, and outlet switch participates in matching somebody with somebody for fault actions time in itself
Put, interconnection switch is not involved in the principle of the configuration of fault actions time in itself, by ring main unit H2 looped network cabinet switch Q22 in Fig. 9,
Looped network cabinet switch Q21, ring main unit H2 looped network cabinet switch Q12, looped network cabinet switch Q11 and outlet switch QF1 fault actions
Time is configured to 1s ~ 5s successively；
By ring main unit H3 looped network cabinet switch Q32, ring main unit H4 looped network cabinet switch Q41, looped network cabinet switch Q42 and outlet are opened
The fault actions time for closing QF2 is configured to 1s ~ 4s successively；Ring main unit H5 looped network cabinet switch Q51, looped network cabinet switch Q52, looped network
Cabinet H6 looped network cabinet switch Q61, looped network cabinet switch Q62 and outlet switch QF3 fault actions time be configured to successively 1s ~
5s；Branch outlet switch Q111, branch outlet switch Q112 in ring main unit H1 ~ ring main unit H6, branch outlet switch Q211, divide
Branch outlet switch Q212, branch outlet switch Q311, branch outlet switch Q312, branch outlet switch Q411, branch's outlet are opened
Close Q412, branch outlet switch Q511, branch outlet switch Q512 and branch outlet switch Q611, branch outlet switch Q612
Fault actions time unification be defined as 0.25s.
For step 1003 ~ step 1005：As shown in Figure 10, it is assumed that trouble point K4 is located at ring main unit H1 looped network cabinet switch
Between Q12 and ring main unit H2 looped network cabinet switch Q21, looped network cabinet switch Q11, looped network cabinet switch Q12 and outlet switch QF1 inspections
Failure is measured, and judges that transient reactive power is negative value, therefore trouble point is located at looped network cabinet switch Q12 downstream, therefore ring
Disconnected after net cabinet switch Q12 delays 3s, after looped network cabinet switch Q12 actions, looped network cabinet switch Q11, outlet switch QF1 detection
The residual voltage arrived disappears, and outlet switch QF1 and looped network cabinet switch Q11 are without deferred action, and outlet switch QF1 receives ring
Judge that trouble point be located at looped network cabinet switch Q12 downstream after net cabinet switch Q12 action message, i.e. looped network cabinet switch Q12 with
Between ring main unit H2 looped network cabinet switch Q21, outlet switch QF1, which sends instruction, disconnects looped network cabinet switch Q21, completes faulty section
The isolation of section.
For step 1006：Outlet switch QF1 compares interconnection switch Q7 and interconnection switch Q31 spare capacity, it is assumed that connection
Network switch Q7 spare capacity is less than interconnection switch Q31 spare capacity, then outlet switch QF1, which sends instruction, makes interconnection switch
Q31 is closed, and can be looped network cabinet switch Q31 after interconnection switch Q31 closures.
For step 1007：
After looped network cabinet switch Q12, looped network cabinet switch Q21 are disconnected and close interconnection switch Q31, outlet switch QF1 institutes
The agent territory of agency includes ring main unit H1；The agent territory that outlet switch QF2 is acted on behalf of includes：Ring main unit H2 ~ ring main unit H4；
Outlet switch QF3 agent territory includes ring main unit H5, ring main unit H6 and interconnection switch Q7.
For step 1008：
By the outlet switch QF1 agent territories acted on behalf of only include ring main unit H1, therefore looped network cabinet switch Q11 in ring main unit H1
The fault actions time be configured to 1s, the outlet switch QF1 fault actions time is configured to 2s；Acted on behalf of in outlet switch QF2
Region in, ring main unit H2 looped network cabinet switch Q22, ring main unit H3 looped network cabinet switch Q32, looped network cabinet switch Q32, ring main unit
H4 looped network cabinet switch Q41, looped network cabinet switch Q42 and outlet switch QF2 fault actions time are configured to 1s ~ 6s successively；
Ring main unit H5 looped network cabinet switch Q51, looped network cabinet switch Q52, ring main unit H6 looped network cabinet switch Q61, looped network cabinet switch Q62 with
And the outlet switch QF3 fault actions time is configured to 1s ~ 5s successively.
Embodiment 5：
In the present embodiment, the difference with embodiment 4 is：Trouble point K5 occurs to act on behalf of area what outlet switch QF2 was acted on behalf of
In domain, specifically occur between ring main unit H3 looped network cabinet switch Q32 and ring main unit H4 looped network cabinet switch Q41, such as Figure 11 institutes
Show.
Now looped network cabinet switch Q41, looped network cabinet switch Q42 and outlet switch QF2 detect failure, and judge transient state
Reactive power is negative value, therefore trouble point is located at looped network cabinet switch Q41 downstream, therefore after looped network cabinet switch Q41 delays 2s
Disconnect, after looped network cabinet switch Q41 actions, the residual voltage that looped network cabinet switch Q42, outlet switch QF2 are detected disappears, outlet
QF2 and looped network cabinet switch Q42 is switched without deferred action, and outlet switch QF3 receives looped network cabinet switch Q41 action message
Judge that trouble point is located at looped network cabinet switch Q41 downstream, i.e. looped network cabinet switch Q41 and ring main unit H3 looped network cabinet switch afterwards
Between Q32, outlet switch QF2, which sends instruction, disconnects looped network cabinet switch Q32, completes the isolation of fault section.
Outlet switch QF2 compares interconnection switch Q7 and interconnection switch Q31 spare capacity, it is assumed that interconnection switch Q7's is standby
Capacity is less than interconnection switch Q31 spare capacity, then outlet switch QF1, which sends instruction, closes interconnection switch Q31, interconnection switch
Can be looped network cabinet switch Q31 after Q31 closures.
After looped network cabinet switch Q41, looped network cabinet switch Q32 are disconnected and close interconnection switch Q31, outlet switch
The agent territory that QF1 is acted on behalf of includes ring main unit H1 ~ ring main unit H3 and interconnection switch Q7；The generation that outlet switch QF2 is acted on behalf of
Reason region includes ring main unit H4；Outlet switch QF3 agent territory includes ring main unit H5, ring main unit H6 and interconnection switch Q7.
In the agent territory that outlet switch QF1 is acted on behalf of：Looped network cabinet switch Q31, looped network cabinet switch Q22, ring main unit are opened
The fault actions time for closing Q21, looped network cabinet switch Q12, looped network cabinet switch Q11 and outlet switch QF1 is followed successively by 1s ~ 6s；
In the agent territory that outlet switch QF2 is acted on behalf of：The looped network cabinet switch Q42 and outlet switch QF2 fault actions time is successively
It is configured to 1s ~ 2s；In the agent territory that outlet switch QF3 is acted on behalf of：Ring main unit H5 looped network cabinet switch Q51, ring main unit is opened
Q52 is closed, ring main unit H6 looped network cabinet switch Q61, looped network cabinet switch Q62 and outlet switch QF3 fault actions time are successively
It is configured to 1s ~ 5s.
Embodiment 6：
In the present embodiment, the difference with embodiment 4 is：Trouble point K6 occurs to act on behalf of area what outlet switch QF3 was acted on behalf of
In domain, specifically occur between ring main unit H5 looped network cabinet switch Q52 and ring main unit H6 looped network cabinet switch Q61, such as Figure 12 institutes
Show.
Now looped network cabinet switch Q61, looped network cabinet switch Q62 and outlet switch QF3 detect failure, and judge transient state
Reactive power is negative value, therefore trouble point is located at looped network cabinet switch Q61 downstream, therefore after looped network cabinet switch Q61 delays 3s
Disconnect, after looped network cabinet switch Q61 actions, the residual voltage that looped network cabinet switch Q62, outlet switch QF3 are detected disappears, outlet
QF3 and looped network cabinet switch Q62 is switched without deferred action, and outlet switch QF3 receives looped network cabinet switch Q61 action message
Judge that trouble point is located at looped network cabinet switch Q61 downstream, i.e. looped network cabinet switch Q61 and ring main unit H5 looped network cabinet switch afterwards
Between Q52, outlet switch QF3, which sends instruction, disconnects looped network cabinet switch Q52, completes the isolation of fault section.
Outlet switch QF3 compares interconnection switch Q7 and interconnection switch Q31 spare capacity, it is assumed that interconnection switch Q7's is standby
Capacity is more than interconnection switch Q31 spare capacity, then outlet switch QF1, which sends instruction, closes interconnection switch Q7.
After looped network cabinet switch Q41, looped network cabinet switch Q32 are disconnected and close interconnection switch Q31, outlet switch
The agent territory that QF1 is acted on behalf of includes ring main unit H1, ring main unit H2, ring main unit 5, ring main unit 6 and interconnection switch Q7；Outlet is opened
Closing the agent territory that QF2 is acted on behalf of includes ring main unit 3, ring main unit H4；Outlet switch QF3 agent territory includes ring main unit H6.
In the agent territory that outlet switch QF1 is acted on behalf of：Outlet switch QF1, looped network cabinet switch Q11, looped network cabinet switch
Q12, looped network cabinet switch Q21, branch outlet switch Q211, interconnection switch Q7, looped network cabinet switch Q51, looped network cabinet switch Q52 event
Barrier actuation time is followed successively by 8s ~ 1s, and looped network cabinet switch Q22 actuation time is less than branch outlet switch Q211 time,
It is configured to 2s.In the agent territory that outlet switch QF2 is acted on behalf of：Looped network cabinet switch Q32, looped network cabinet switch Q41, ring main unit are opened
The fault actions time for closing Q42 and outlet switch QF2 is followed successively by 1s ~ 4s；In the agent territory that outlet switch QF3 is acted on behalf of
It is interior：Ring main unit H6 looped network cabinet switch Q62 and outlet switch QF3 the fault actions time are configured to 1s ~ 2s successively.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (8)
1. a kind of power distribution network low current grounding partition method based on regional agency, multiple power supplys are provided with power distribution network,
The power output end of each power supply is provided with outlet switch, is provided with the interconnection switch that multiple reset conditions are in point position, joins
Network switch is isolated two adjacent outlet switchs, is opened if being additionally provided with main line between outlet switch and interconnection switch
Close, low current grounding betides the optional position of power distribution network, it is characterised in that：Comprise the following steps：
Step a, the power distribution network is divided into multiple agent territories, and a regional agency is set in each agent territory
Terminal；
Step b, the fault actions time of outlet switch and line switching in Configuration Agent region；
Step c, judge whether low current grounding occurs in power distribution network；If low current grounding does not occur, circulate
This step is performed, in the event of low current grounding, performs step d；
Step d, after low current grounding occurs in circuit, it is located at failure by what abort situation basis for estimation judged to obtain
The outlet switch or line switching of point upstream, outlet switch or line switching prolong according to the fault actions time configured in step b
When act；
Step e, the line switching separating brake of regional agency terminal control trouble point downstream, realizes the isolation of trouble point；
Step f, it is determined that the interconnection switch and the interconnection switch that closes a floodgate of needs action；
Step g, update the topological network of power distribution network；
Step h, reconfigure the fault actions time of line switching in agent territory.
2. the power distribution network low current grounding partition method according to claim 1 based on regional agency, its feature exist
In：In described step a, the land between outlet switch and interconnection switch is described agent territory, outlet switch
Itself is as the regional agency terminal in agent territory.
3. the power distribution network low current grounding partition method according to claim 1 based on regional agency, its feature exist
In：In described step b, the setting principle of fault actions time is：Line switching in agent territory on main line,
The fault actions time using outlet switch as starting point line switching downstream shortens successively, and outlet switch participates in failure and moved in itself
Make the configuration of time, interconnection switch is not involved in the configuration of fault actions time in itself, and the branched line being connected on main line is opened
The fault actions time of pass is less than the fault actions time of any one line switching on main line.
4. the power distribution network low current grounding partition method according to claim 1 based on regional agency, its feature exist
In：Described line switching is the looped network cabinet switch of ring main unit in block switch or cable run in overhead line.
5. the power distribution network low current grounding partition method according to claim 1 based on regional agency, its feature exist
In：Described outlet switch, interconnection switch and line switching is using the one that can detect zero-sequence current and residual voltage simultaneously
Switching.
6. the power distribution network low current grounding partition method according to claim 1 based on regional agency, its feature exist
In：Abort situation basis for estimation described in step d is：The transient reactive power of trouble point upstream be it is negative, trouble point downstream
Transient reactive power is just.
7. the power distribution network low current grounding partition method according to claim 1 based on regional agency, its feature exist
In：Using transient reactive power method to whether described low current grounding occurring judging in step c.
8. the power distribution network low current grounding partition method according to claim 1 based on regional agency, its feature exist
In：The determination of the interconnection switch for needing to act described in step f is according to being：Agent territory phase with low current grounding occurs
The maximum interconnection switch of spare capacity is the interconnection switch of needs action in adjacent interconnection switch.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245072A (en) * | 2018-09-17 | 2019-01-18 | 南京国电南自电网自动化有限公司 | Adaptive type feeder automation fault handling method on the spot based on region serial number |
| CN109387732A (en) * | 2018-12-21 | 2019-02-26 | 云南电网有限责任公司电力科学研究院 | A kind of adaptive in-situ protection method and system of small current grounding fault |
| CN111426915A (en) * | 2020-05-11 | 2020-07-17 | 云南电网有限责任公司电力科学研究院 | Distributed small current ground fault positioning method |
| CN112904145A (en) * | 2021-01-22 | 2021-06-04 | 福州大学 | Power distribution network single-phase earth fault section positioning method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354390A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Distributed intelligent feed line automation control method |
| CN104518488A (en) * | 2014-12-30 | 2015-04-15 | 广西大学 | Load point fault area type division method for reliability analysis on power distribution network |
| CN106230121A (en) * | 2016-09-21 | 2016-12-14 | 湖南大学 | A kind of self-adaptive healing guard method being applied to containing hybrid switch power distribution network |
| CN106786425A (en) * | 2017-01-16 | 2017-05-31 | 中国电力科学研究院 | A kind of coincidence formula failure separation method and system on the spot |
| CN107134761A (en) * | 2017-05-18 | 2017-09-05 | 国网江苏省电力公司南京供电公司 | A kind of power distribution network distributed intelligence control method based on regional agency pattern |
-
2017
- 2017-10-11 CN CN201710941201.5A patent/CN107465177B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354390A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Distributed intelligent feed line automation control method |
| CN104518488A (en) * | 2014-12-30 | 2015-04-15 | 广西大学 | Load point fault area type division method for reliability analysis on power distribution network |
| CN106230121A (en) * | 2016-09-21 | 2016-12-14 | 湖南大学 | A kind of self-adaptive healing guard method being applied to containing hybrid switch power distribution network |
| CN106786425A (en) * | 2017-01-16 | 2017-05-31 | 中国电力科学研究院 | A kind of coincidence formula failure separation method and system on the spot |
| CN107134761A (en) * | 2017-05-18 | 2017-09-05 | 国网江苏省电力公司南京供电公司 | A kind of power distribution network distributed intelligence control method based on regional agency pattern |
Non-Patent Citations (1)
| Title |
|---|
| 高孟友等: "基于实时拓扑识别的分布式馈线自动化控制方法", 《电力系统自动化》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245072A (en) * | 2018-09-17 | 2019-01-18 | 南京国电南自电网自动化有限公司 | Adaptive type feeder automation fault handling method on the spot based on region serial number |
| CN109387732A (en) * | 2018-12-21 | 2019-02-26 | 云南电网有限责任公司电力科学研究院 | A kind of adaptive in-situ protection method and system of small current grounding fault |
| CN111426915A (en) * | 2020-05-11 | 2020-07-17 | 云南电网有限责任公司电力科学研究院 | Distributed small current ground fault positioning method |
| CN112904145A (en) * | 2021-01-22 | 2021-06-04 | 福州大学 | Power distribution network single-phase earth fault section positioning method and system |
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