CN109066603A - A kind of low-voltage distribution system - Google Patents
A kind of low-voltage distribution system Download PDFInfo
- Publication number
- CN109066603A CN109066603A CN201811065217.5A CN201811065217A CN109066603A CN 109066603 A CN109066603 A CN 109066603A CN 201811065217 A CN201811065217 A CN 201811065217A CN 109066603 A CN109066603 A CN 109066603A
- Authority
- CN
- China
- Prior art keywords
- sections
- switch
- contactor
- busbar
- intelligent acquisition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003111 delayed effect Effects 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 5
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention belongs to low-voltage distribution technical fields, provide a kind of low-voltage distribution system.In the present invention, low-voltage distribution system includes the first incoming switch, the second incoming switch, bus connection switch, the first busbar module, the second busbar module and intelligent acquisition control module；When intelligent acquisition control module detects the first incoming switch or the second incoming switch disconnects, when collecting the first busbar module or the second busbar module generation instantaneous short-circuit failure, after the preset time that is delayed, intelligent acquisition control module controls the first incoming switch or the second incoming switch closure, to eliminate instantaneous short-circuit failure.Therefore, which can restore instantaneous short-circuit failure automatically, reduce fault coverage, user is avoided to lose.
Description
Technical field
The invention belongs to low-voltage distribution technical field more particularly to a kind of low-voltage distribution systems.
Background technique
Existing low-voltage distribution system is two inlet wires, one mother structure, as shown in Figure 1, low-voltage distribution system is by 1 He of alternating current
Alternating current 2 is powered, and QF1, QF2 are incoming switch, and low-voltage distribution system further includes two sections of busbars, i.e. I sections of busbar and II sections of busbars, and two
Section busbar between by bar coupler (abbreviation bus connection switch) QF3 couple, wherein I sections of busbars between QF1 and QF3,
II sections of busbars between QF2 and QF3, QF11, QF12 ... QF1n is I sections of busbar feeder switches, QF21, QF22 ... QF2n is
II sections of busbar feeder switches.
When low-voltage distribution system work normally when, incoming switch QF1, QF2 closure, bus connection switch QF3 disconnect, alternating current 1 with
Alternating current 2 is respectively to I sections of busbars and II sections of busbar power supplies.When alternating current 1 powers off, QF1 is disconnected manually, is closed QF3, alternating current 2 is simultaneously
It powers to I sections of busbars and II sections of busbars.When alternating current 2 powers off, QF2 is disconnected manually, is closed QF3, and alternating current 1 gives I sections of busbars simultaneously
It powers with II sections of busbars.
When instantaneous short-circuit failure occurs for I sections of busbars or II sections of busbars, short circuit current makes incoming switch QF1 or QF2 trip
Disconnect, lead to all load power failure cisco unity malfunctions of I section busbars or II sections of busbars, expand accident range, give user with
Carry out massive losses.Therefore, existing low-voltage distribution system that when instantaneous short-circuit failure occurs, there are fault coverages is big, to user with
Come the problem of loss.
Summary of the invention
The purpose of the present invention is to provide a kind of low-voltage distribution systems, it is intended to solve existing low-voltage distribution system and occur
There are problems that fault coverage is big, brings loss to user when instantaneous short-circuit failure.
The invention is realized in this way a kind of low-voltage distribution system, by the first alternating current and the second mains-supplied, the low pressure
Distribution system includes the first incoming switch, the second incoming switch, bus connection switch；The low-voltage distribution system further includes the first busbar
Module, the second busbar module, intelligent acquisition control module；The both ends of first incoming switch are separately connected first alternating current
With the first end of the first busbar module, the both ends of second incoming switch are separately connected second alternating current and described
The first end of two busbar modules, the both ends of the bus connection switch are separately connected the second end and described of the first busbar module
The second end of two busbar modules；
When the first busbar module and the equal fault-free of the second busbar module, the intelligent acquisition control module control
The bus connection switch is made to disconnect and control first incoming switch and second incoming switch is closed, first city
Electric and described second alternating current gives the first busbar module and the second busbar module for power supply respectively；When the intelligent acquisition control
When molding block detects that first incoming switch or second incoming switch disconnect, after the preset time that is delayed, the intelligence
Acquisition control module controls first incoming switch or second incoming switch closure, to eliminate instantaneous short-circuit failure.
The first busbar module includes I sections of busbars, N number of I sections of contactor and N+1 I sections of feeder switches, and described second is female
Arranging module includes II sections of busbars, N number of II sections of contactor and N+1 II sections of feeder switches, and N is integer, N > 1；
The first end and second end of the I sections of busbar is respectively the first end and second end of the first busbar module；Institute
The first end and second end for stating II sections of busbars is respectively the first end and second end of the second busbar module；N+1 I sections described
The first end of feeder switch is connected to the I sections of busbar, the I section between the first end of the two neighboring I sections of feeder switch
An I sections of contactor is accessed in busbar section, N number of I sections of contactor is connected in series by the I sections of busbar；N+1 institute
The first end for stating II sections of feeder switches is connected to the II sections of busbar, the first end of the two neighboring II sections of feeder switch it
Between II section busbar section on access an II section contactor, N number of II sections of contactor pass through the II sections of busbar series connection
Connection.
When the first busbar module and the equal fault-free of the second busbar module, the intelligent acquisition control module control
It makes the bus connection switch and disconnects and control first incoming switch, second incoming switch, N number of I sections of contactor
And the N number of II sections of contactors are closed, first city supplies electricity to the N+1 being connected on the N+1 I sections of feeder switches and bears
Power supply is carried, second city supplies electricity to N+1 load supplying being connected on the N+1 II sections of feeder switches.
When long-time short trouble occurs for the first busbar module, the intelligent acquisition control module controls N number of institute
It states I sections of contactors to disconnect, then controls the first incoming switch closure, and it is suitable according to presetting to control the N number of I sections of contactors
Sequence is successively closed；After the intelligent acquisition control module controls n-th of I sections of contactor closure, the intelligent acquisition control
Molding block collects the first cut-off signal of first incoming switch, and the intelligent acquisition control module is disconnected according to described first
The position of ON signal and n-th of I sections of contactor positions the position where the long-time short trouble, and n is integer,
1≤n≤N。
When long-time short trouble occurs for the second busbar module, the intelligent acquisition control module controls N number of institute
It states II sections of contactors to disconnect, then controls the second incoming switch closure, and control the N number of II sections of contactors according to default
Sequence is successively closed；After the intelligent acquisition control module controls n-th of II sections of contactor closure, the intelligent acquisition
Control module collects the second cut-off signal of second incoming switch, and the intelligent acquisition control module is according to described second
The position of cut-off signal and n-th of II sections of contactor positions the position where the long-time short trouble, and n is whole
Number, 1≤n≤N.
After the intelligent acquisition control module collects first cut-off signal, the intelligent acquisition control module control
N-th of I sections of contactor and (n+1)th I sections of contactor disconnect, control the 1st to the (n-1)th I sections of contact
Device, which is closed, controls the n-th+2 to I described in n-th sections contactors is closed, control the bus connection switch, N number of described II sections connect
Tentaculum, first incoming switch and second incoming switch are closed；First city supplies electricity to be connected to the 1st to n-th
N load supplying on a I sections of feeder switches, second city supply electricity to be connected to the n-th+2 to I described in n-th sections feedbacks
The N-n-1 N+1 load supplying for loading and being connected on the N+1 II sections of feeder switches on wiretap.
After the intelligent acquisition control module collects second cut-off signal, the intelligent acquisition control module control
N-th of II sections of contactor and (n+1)th II sections of contactor, which disconnect, controls the 1st to (n-1)th described II sections connects
Tentaculum, which is closed, controls the n-th+2 to II described in n-th sections contactors is closed, controls the bus connection switch, is N number of I sections described
Contactor, first incoming switch and second incoming switch are closed；Second city supplies electricity to be connected to the 1st to
N load supplying on the n II sections of feeder switches, first city supplies electricity to be connected to the n-th+2 to II described in n-th sections
The N-n-1 N+1 load supplying for loading and being connected on the N+1 I sections of feeder switches on feeder switch.
The intelligent acquisition control module includes that switch state acquisition unit, switch control unit and contactor control are single
Member；
The switch state acquisition unit to first incoming switch, second incoming switch, the bus connection switch,
The switch state of the N number of I sections of contactors and the N number of II sections of contactors is acquired；The switch control unit controls institute
State the closure and disconnection of the first incoming switch, second incoming switch and the bus connection switch；The contactor control unit
Control the closure and disconnection of the N number of I sections of contactors and the N number of II sections of contactors.
The intelligent acquisition control module further includes central control unit；
The central control unit receives the switch state acquisition unit switch state collected, and is opened according to described
Off status output switch control signal is to the switch control unit and the contactor control unit, so that the switch control
Unit and the contactor control unit are according to switch control signal control first incoming switch, second inlet wire
The closure and disconnection of switch, the bus connection switch, N number of I sections of contactor and the N number of II sections of contactors.
The intelligent acquisition control module further includes communication unit and display and key setting unit；
Data information to the backstage, and the reception backstage that the communication unit sends the low-voltage distribution system is sent
Data；The display shows the data information of the low-voltage distribution system with key setting unit, and receives user's input
Parameter setting information.
In the present invention, low-voltage distribution system includes the first incoming switch, the second incoming switch, bus connection switch, the first mother
Arrange module, the second busbar module and intelligent acquisition control module；When intelligent acquisition control module detect the first incoming switch or
When second incoming switch disconnects, that is, when collecting the first busbar module or the second busbar module generation instantaneous short-circuit failure, delay
After preset time, intelligent acquisition control module controls the first incoming switch or the second incoming switch closure, to eliminate instantaneous short-circuit
Failure.Therefore, which can restore instantaneous short-circuit failure automatically, reduce fault coverage, user is avoided to lose.
Detailed description of the invention
Fig. 1 is the low-voltage distribution system circuit diagram that background of invention provides；
Fig. 2 is low-voltage distribution system schematic diagram provided in an embodiment of the present invention；
Fig. 3 be another embodiment of the present invention provides low-voltage distribution system schematic diagram；
Fig. 4 be another embodiment of the present invention provides low-voltage distribution system schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 2 shows the schematic diagrames of low-voltage distribution system provided in an embodiment of the present invention, for ease of description, illustrate only
Part related to the embodiment of the present invention, details are as follows:
Low-voltage distribution system by the first alternating current and the second mains-supplied, low-voltage distribution system include the first incoming switch QF1,
Second incoming switch QF2, bus connection switch QF3, the first busbar module 100, the second busbar module 200, intelligent acquisition control module
300；The both ends of first incoming switch QF1 are separately connected the first end of the first alternating current and the first busbar module 100, and the second inlet wire is opened
The both ends for closing QF2 are separately connected the first end of the second alternating current and the second busbar module 200, and the both ends of bus connection switch QF3 connect respectively
Connect the second end of the first busbar module 100 and the second end of the second busbar module 200.
When the first busbar module 100 and the second busbar 200 equal fault-free of module, intelligent acquisition control module 300 is controlled
Bus connection switch QF3 is disconnected and control the first incoming switch QF1 and the second incoming switch QF2 is closed, the first alternating current and second
Alternating current gives the first busbar module 100 and the second busbar module 200 to power respectively；When intelligent acquisition control module 300 detects
When one incoming switch QF1 or the second incoming switch QF2 are disconnected, after the preset time that is delayed, the control of intelligent acquisition control module 300 the
One incoming switch QF1 or the second incoming switch QF2 closure, to eliminate instantaneous short-circuit failure.
Specifically, the first busbar module 100 and the second busbar module 200 without short trouble when, bus connection switch QF3 is disconnected
Open state, the first incoming switch QF1 and the second incoming switch QF2 are closed, and the first city supplies electricity to the power supply of the first busbar module 100,
Second city supplies electricity to the power supply of the second busbar module 200.When instantaneous short-circuit failure occurs for the first busbar module 100, the first inlet wire is opened
Close QF1 disconnect, when intelligent acquisition control module 300 detect the first incoming switch QF1 disconnect when, delay preset time it
Afterwards, intelligent acquisition control module 300 controls the first incoming switch QF1 closure, to eliminate instantaneous short-circuit failure, restores normal and supplies
Electricity.When instantaneous short-circuit failure occurs for the second busbar module 200, instantaneous short-circuit event occurs for each switch motion principle and the first busbar
Each switch motion principle when barrier is identical, repeats no more.
Fig. 3 show another embodiment of the present invention provides low-voltage distribution system, it is specific as follows:
First busbar module 100 includes I sections of busbars, N number of I sections of contactor (KM11~KM1N) and N+1 I sections of feeder switches
(QF11~QF1 (N+1)), the second busbar module 200 include II sections of busbars, N number of II sections of contactor (KM21~KM2N) and N+1
II sections of feeder switches (QF21~QF2 (N+1)), N is integer, N > 1.
The first end and second end of I sections of busbars is respectively the first end and second end of the first busbar module 100；II sections of busbars
First end and second end be respectively the second busbar module 200 first end and second end；N+1 I sections of feeder switch (QF11~
QF1 (N+1)) first end be connected to I sections of busbars, in the I section busbar section between the first end of two neighboring I sections of feeder switch
An I sections of contactors are accessed, N number of I sections of contactor (KM11~KM1N) is connected in series by I sections of busbars；N+1 II sections of feeder lines are opened
The first end for closing (QF21~QF2 (N+1)) is connected to II sections of busbars, between the first end of two neighboring II sections of feeder switch
An II sections of contactors are accessed in II sections of busbar sections, N number of II sections of contactor (KM21~KM2N) is connected in series by II sections of busbars.
Specifically, the second end and N+1 II sections of feeder switches of N+1 I sections of feeder switch (QF11~QF1 (N+1))
The second end of (QF21~QF2 (N+1)) is all connected with corresponding load.
Specifically, when the first busbar module 100 and the second busbar 200 equal fault-free of module, intelligent acquisition control module
300 control bus connection switch QF3 are disconnected and control the first incoming switch QF1, the second incoming switch QF2, N number of I sections of contactor
(KM11~KM1N) and N number of II sections of contactor (KM21~KM2N) are closed, and the first city, which supplies electricity to be connected to N+1 I sections of feeder line, to open
Close N+1 load supplying on (QF11~QF1 (N+1)), the second city supply electricity to be connected to N+1 II sections of feeder switch (QF21~
QF2 (N+1)) on N+1 load supplying.
Specifically, intelligent acquisition control module 300 controls N when long-time short trouble occurs for the first busbar module 100
A I sections of contactor (KM11~KM1N) disconnects, then controls the first incoming switch QF1 closure, and control N number of I sections of contactor
(KM11~KM1N) is successively closed according to preset order；When intelligent acquisition control module 300 controls n-th of I sections of contactor KM1n
After closure, intelligent acquisition control module 300 collects the first cut-off signal of the first incoming switch QF1, and intelligent acquisition controls mould
Block 300 is according to the position where the position of the first cut-off signal and n-th of I sections of contactor KM1n positioning long-time short trouble, n
For integer, 1≤n≤N.
Further specifically, after the first incoming switch QF1 is disconnected, after the preset time that is delayed, intelligent acquisition control module
300 control the first incoming switch QF1 closures judge the first busbar if disconnecting immediately again after the first incoming switch QF1 closure
Long-time short trouble occurs for module 100.At this point, intelligent acquisition control module 300 control N number of I sections of contactor (KM11~
KM1N it) disconnects, then controls the first incoming switch QF1 closure, then control N number of I sections of contactor (KM11~KM1N) according to certainly
The sequence at the first end incoming switch QF1 to the end bus connection switch QF3 is successively closed, i.e., according to from the 1st I sections of contactor KM11 to
The sequence of N number of I sections of contactor KM1N is successively closed, and after n-th of I sections of contactor KM1n is closed, the first incoming switch QF1 is immediately
It disconnects, then judges that long-time short trouble occurs between KM1n and KM1 (n+1).For example, as shown in figure 4, if N=6, it is close
The I section contactor of first incoming switch QF1 is the 1st I section contactor KM11, and the I section contactor close to bus connection switch QF3 is the
6 I sections of contactor KM16,6 I sections of contactors are successively closed according to the sequence from KM11 to KM16, when the 3rd I sections of contactors
After KM13 closure, the first incoming switch QF1 is disconnected immediately, then judges that long-time short trouble occurs between KM13 and KM14.
Specifically, after intelligent acquisition control module 300 controls n-th of I sections of contactor KM1n closure, intelligent acquisition control
Module 300 collects the first cut-off signal of the first incoming switch QF1, and hereafter, intelligent acquisition control module 300 controls n-th of I
Section contactor KM1n and (n+1)th I sections of contactor KM1 (n+1) disconnect, control the 1st to (n-1)th I sections of contactors and close
Close, control the n-th+2 is closed to I sections of contactors of n-th, control bus connection switch QF3, N number of II sections of contactor (KM21~
KM2N), the first incoming switch QF1 and the second incoming switch QF2 are closed；First city supply electricity to be connected to the 1st to n-th I sections
N load supplying on feeder switch, the second city supply electricity to be connected to the n-th+2 N-n-1 to I sections of feeder switches of n-th
Load and be connected to N+1 load supplying on N+1 II sections of feeder switch.
Further specifically, as shown in figure 4, if N=6；N=3, after the 3rd I sections of contactor KM13 is closed, first into
Wiretap QF1 is disconnected immediately, then judges that the generation of long-time short trouble is contacted in the 3rd I sections of contactor KM13 with the 4th I sections
Between device KM14, it is disconnected that intelligent acquisition control module 300 controls the 3rd I sections contactor KM13 and the 4th I sections of contactor KM14
It opens, the 1st I sections of contactor KM11 of control, the 2nd I sections of contactor KM12, the 5th I sections contactor KM15 and the 6th I sections of contacts
Device KM16 is closed, and controls bus connection switch QF3,6 II sections of contactors (KM21~KM26), the first incoming switch QF1 and second
Incoming switch QF2 is closed.At this point, the first city supplies electricity to be connected to the 1st I sections of feeder switch QF11 to the 3rd I sections of feeder switches
3 load supplyings on QF13, the second city supply electricity to be connected to the 5th I sections of feeder switch QF15, the 6th I sections of feeder switch QF16
On load and 7 load supplyings being connected on 7 II sections of feeder switches (QF21~QF27).
Therefore, when long-time short trouble occurs for the first busbar module 100, which can quick diagnosis event
Position occurs for barrier, positioning failure, and isolated fault circuit quickly eliminates potential faults, restores electricity rapidly, to resist or alleviate
Various harm improve distribution system reliability of operation.
Specifically, intelligent acquisition control module 300 controls N when long-time short trouble occurs for the second busbar module 200
A II sections of contactor (KM21~KM2N) disconnects, then controls the second incoming switch QF2 closure, and control N number of II sections of contactor
(KM21~KM2N) is successively closed according to preset order；When intelligent acquisition control module 300 controls n-th of II sections of contactor KM2n
After closure, intelligent acquisition control module 300 collects the second cut-off signal of the second incoming switch QF2, and intelligent acquisition controls mould
Block 300 positions the position where long-time short trouble according to the position of the second cut-off signal and n-th of II sections of contactor KM2n,
N is integer, 1≤n≤N.Second busbar abort situation judges failure when long-time short trouble occurs for principle and the first busbar
Position judges that principle is identical, and details are not described herein.
Specifically, intelligent acquisition control module 300 is controlled after intelligent acquisition control module 300 collects the second cut-off signal
It makes n-th of II sections of contactor and (n+1)th II sections of contactor disconnects, controls the 1st to (n-1)th II sections of contactors and close
Close, control the n-th+2 is closed to II sections of contactors of n-th, control bus connection switch QF3, N number of I sections of contactor (KM11~
KM1N), the first incoming switch QF1 and the second incoming switch QF2 are closed；Second city supply electricity to be connected to the 1st to n-th II sections
N load supplying on feeder switch, the first city supply electricity to be connected to the n-th+2 N-n-1 to II sections of feeder switches of n-th
Load and be connected to N+1 load supplying on N+1 I sections of feeder switch.After long-time short trouble occurs for the second busbar
Power supply mode after with the first busbar long-time short trouble occurs for power supply mode is identical, and details are not described herein.
As an embodiment of the present invention, intelligent acquisition control module 300 includes switch state acquisition unit, switch control list
Member and contactor control unit.
Switch state acquisition unit is to the first incoming switch QF1, the second incoming switch QF2, bus connection switch QF3, I sections N number of
The switch state of contactor and N number of II sections of contactor is acquired；Switch control unit controls the first incoming switch QF1, second
The closure and disconnection of incoming switch QF2 and bus connection switch QF3；Contactor control unit controls N number of I sections of contactor and II sections N number of
The closure and disconnection of contactor.
As an embodiment of the present invention, intelligent acquisition control module 300 further includes central control unit.
Central control unit receives switch state acquisition unit switch state collected, and is opened according to switch state output
Control signal is closed to switch control unit and contactor control unit so that switch control unit and contactor control unit according to
Switch control signal controls the first incoming switch QF1, the second incoming switch QF2, bus connection switch QF3, N number of I sections of contactor and N number of
The closure and disconnection of II sections of contactors.
As an embodiment of the present invention, intelligent acquisition control module 300 further includes that communication unit and display are arranged with key
Unit.
Communication unit send low-voltage distribution system data information to backstage, and receive backstage send data；Display
The data information of low-voltage distribution system is shown with key setting unit, and receives the parameter setting information of user's input.
In the present invention, low-voltage distribution system includes the first incoming switch QF1, the second incoming switch QF2, bus connection switch
QF3, the first busbar module 100, the second busbar module 200 and intelligent acquisition control module 300；When intelligent acquisition control module
300 when detecting that the first incoming switch QF1 or the second incoming switch QF2 are disconnected, that is, collects the first busbar module 100 or the second
When instantaneous short-circuit failure occurs for busbar module 200, after the preset time that is delayed, intelligent acquisition control module 300 controls the first inlet wire
Switch QF1 or the second incoming switch QF2 closure, to eliminate instantaneous short-circuit failure.Therefore, which can restore automatically
Instantaneous short-circuit failure, reduces fault coverage, and user is avoided to lose.When long-time short trouble occurs for the low-voltage distribution system
When, can quick diagnosis failure, position occurs for positioning failure, and isolated fault circuit quickly eliminates potential faults, restores to supply rapidly
Electricity improves distribution system reliability of operation to resist or alleviate various harm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of low-voltage distribution system, by the first alternating current and the second mains-supplied, the low-voltage distribution system includes the first inlet wire
Switch, the second incoming switch, bus connection switch；It is characterized in that, the low-voltage distribution system further includes the first busbar module, second
Busbar module, intelligent acquisition control module；The both ends of first incoming switch are separately connected first alternating current and described
The first end of one busbar module, the both ends of second incoming switch are separately connected second alternating current and the second busbar mould
The first end of block, the both ends of the bus connection switch be separately connected the first busbar module second end and the second busbar mould
The second end of block；
When the first busbar module and the equal fault-free of the second busbar module, the intelligent acquisition control module controls institute
Bus connection switch is stated to disconnect and control first incoming switch and second incoming switch is closed, first alternating current and
Second alternating current gives the first busbar module and the second busbar module for power supply respectively；When the intelligent acquisition controls mould
When block detects that first incoming switch or second incoming switch disconnect, after the preset time that is delayed, the intelligent acquisition
Control module controls first incoming switch or second incoming switch closure, to eliminate instantaneous short-circuit failure.
2. low-voltage distribution system as described in claim 1, which is characterized in that the first busbar module includes I sections of busbars, N
A I sections of contactor and N+1 I sections of feeder switches, the second busbar module include II sections of busbars, N number of II sections of contactor and N+1
A II sections of feeder switch, N are integer, N > 1；
The first end and second end of the I sections of busbar is respectively the first end and second end of the first busbar module；The II
The first end and second end of section busbar is respectively the first end and second end of the second busbar module；The N+1 I sections of feeder lines
The first end of switch is connected to the I sections of busbar, the I section busbar between the first end of the two neighboring I sections of feeder switch
An I sections of contactor is accessed in section, N number of I sections of contactor is connected in series by the I sections of busbar；The N+1 II
The first end of section feeder switch is connected to the II sections of busbar, between the first end of the two neighboring II sections of feeder switch
An II sections of contactor is accessed in II sections of busbar sections, N number of II sections of contactor is connected in series by the II sections of busbar.
3. low-voltage distribution system as claimed in claim 2, which is characterized in that when the first busbar module and second mother
When arranging the equal fault-free of module, the intelligent acquisition control module controls the bus connection switch and disconnects and control first inlet wire
Switch, second incoming switch, N number of I sections of contactor and the N number of II sections of contactors are closed, first alternating current
To N+1 load supplying being connected on the N+1 I sections of feeder switches, second city supplies electricity to be connected to the N+1 II
N+1 load supplying on section feeder switch.
4. low-voltage distribution system as claimed in claim 2, which is characterized in that when the first busbar module generation is short for a long time
When the failure of road, the intelligent acquisition control module controls N number of I sections of contactor and disconnects, then controls first inlet wire and open
It closes and closes, and control the N number of I sections of contactors and be successively closed according to preset order；When the intelligent acquisition control module controls
After n-th of I sections of contactor closure, the intelligent acquisition control module collects the first disconnection of first incoming switch
Signal, the intelligent acquisition control module are fixed according to the position of first cut-off signal and n-th of I sections of contactor
Position where the long-time short trouble of position, n is integer, 1≤n≤N.
5. low-voltage distribution system as claimed in claim 2, which is characterized in that when the second busbar module generation is short for a long time
When the failure of road, the intelligent acquisition control module controls N number of II sections of contactor and disconnects, then controls second inlet wire and open
It closes and closes, and control the N number of II sections of contactors and be successively closed according to preset order；When the intelligent acquisition control module controls
After n-th of II sections of contactor closure, it is second disconnected to collect second incoming switch for the intelligent acquisition control module
ON signal, the intelligent acquisition control module is according to the position of second cut-off signal and n-th of II sections of contactor
The position positioned where the long-time short trouble is set, n is integer, 1≤n≤N.
6. low-voltage distribution system as claimed in claim 4, which is characterized in that the intelligent acquisition control module collects described
After first cut-off signal, the intelligent acquisition control module controls n-th of I sections of contactor and (n+1)th I sections of contact
Device, which disconnects, controls the 1st to the (n-1)th I sections of contactor is closed, controls the n-th+2 to I described in n-th sections contacts
Device, which is closed, controls the bus connection switch, N number of II sections of contactor, first incoming switch and second inlet wire opens
Guan Jun closure；First city supplies electricity to n load supplying being connected on the 1st to the n-th I sections of feeder switch, described
Second city supplies electricity to N-n-1 be connected on the n-th+2 to I described in n-th sections feeder switches load and is connected to described in N+1
N+1 load supplying on II sections of feeder switches.
7. low-voltage distribution system as claimed in claim 5, which is characterized in that the intelligent acquisition control module collects described
After second cut-off signal, the intelligent acquisition control module controls n-th of II sections of contactor and (n+1)th described II sections connects
Tentaculum, which disconnects, controls the 1st to the (n-1)th II sections of contactor is closed, controls the n-th+2 to II described in n-th sections
Contactor is closed, controls the bus connection switch, N number of I sections of contactor, first incoming switch and second inlet wire
Switch is closed；Second city supplies electricity to n load supplying being connected on the 1st to the n-th II sections of feeder switch, institute
The first city is stated to supply electricity to N-n-1 be connected on the n-th+2 to II described in n-th sections feeder switches load and be connected to N+1
N+1 load supplying on the I sections of feeder switch.
8. low-voltage distribution system as claimed in claim 2, which is characterized in that the intelligent acquisition control module includes switch shape
State acquisition unit, switch control unit and contactor control unit；
The switch state acquisition unit is to first incoming switch, second incoming switch, the bus connection switch, described
The switch state of N number of I sections of contactor and the N number of II sections of contactors is acquired；Switch control unit control described the
The closure and disconnection of one incoming switch, second incoming switch and the bus connection switch；The contactor control unit control
The closure and disconnection of the N number of I sections of contactors and the N number of II sections of contactors.
9. low-voltage distribution system as claimed in claim 8, which is characterized in that the intelligent acquisition control module further includes center
Control unit；
The central control unit receives the switch state acquisition unit switch state collected, and according to the switch shape
State output switch control signal is to the switch control unit and the contactor control unit, so that the switch control unit
First incoming switch is controlled according to the switch control signal with the contactor control unit, second inlet wire is opened
Pass, the bus connection switch, N number of I sections of contactor and the N number of II sections of contactors closure and disconnection.
10. low-voltage distribution system as claimed in claim 9, which is characterized in that the intelligent acquisition control module further includes leading to
Believe unit and display and key setting unit；
The communication unit sends the data information of the low-voltage distribution system to backstage, and receives the number that the backstage is sent
According to；The display shows the data information of the low-voltage distribution system with key setting unit, and receives the ginseng of user's input
Number setting information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065217.5A CN109066603B (en) | 2018-09-12 | 2018-09-12 | Low-voltage power distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065217.5A CN109066603B (en) | 2018-09-12 | 2018-09-12 | Low-voltage power distribution system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109066603A true CN109066603A (en) | 2018-12-21 |
| CN109066603B CN109066603B (en) | 2024-05-03 |
Family
ID=64760436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811065217.5A Active CN109066603B (en) | 2018-09-12 | 2018-09-12 | Low-voltage power distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109066603B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260272A (en) * | 2020-10-12 | 2021-01-22 | 许继电气股份有限公司 | Coal mine fault isolation automatic recovery power supply method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554852Y (en) * | 2002-02-26 | 2003-06-04 | 昆明华奥电器设备有限责任公司 | Pole protection switch for low-voltage electric power distribution line |
| CN2593418Y (en) * | 2002-12-10 | 2003-12-17 | 张方一 | Railway signal intelligent boxtype converting station |
| CN105406450A (en) * | 2015-12-03 | 2016-03-16 | 武汉华海通用电气有限公司 | Intelligent protection device for busbar short-circuit fault of marine power distribution panel |
| CN206099504U (en) * | 2016-08-30 | 2017-04-12 | 河北旭辉电气股份有限公司 | Device is side by side divided to low voltage network intelligence |
| CN208753979U (en) * | 2018-09-12 | 2019-04-16 | 深圳市科信通信技术股份有限公司 | A kind of low-voltage distribution system |
-
2018
- 2018-09-12 CN CN201811065217.5A patent/CN109066603B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554852Y (en) * | 2002-02-26 | 2003-06-04 | 昆明华奥电器设备有限责任公司 | Pole protection switch for low-voltage electric power distribution line |
| CN2593418Y (en) * | 2002-12-10 | 2003-12-17 | 张方一 | Railway signal intelligent boxtype converting station |
| CN105406450A (en) * | 2015-12-03 | 2016-03-16 | 武汉华海通用电气有限公司 | Intelligent protection device for busbar short-circuit fault of marine power distribution panel |
| CN206099504U (en) * | 2016-08-30 | 2017-04-12 | 河北旭辉电气股份有限公司 | Device is side by side divided to low voltage network intelligence |
| CN208753979U (en) * | 2018-09-12 | 2019-04-16 | 深圳市科信通信技术股份有限公司 | A kind of low-voltage distribution system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260272A (en) * | 2020-10-12 | 2021-01-22 | 许继电气股份有限公司 | Coal mine fault isolation automatic recovery power supply method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109066603B (en) | 2024-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102611082B (en) | Self-adaptive feeder neighborhood interactive fault-tolerant relay protection method for power distribution network | |
| CN109149575B (en) | Ring network unit and double-ring network type power distribution network | |
| WO2021139071A1 (en) | Smart outdoor switch cabinet, and closed-loop i-shaped power distribution network for same | |
| CN104539043A (en) | Automatic-switching device system and method of standby power source | |
| CN104518564A (en) | Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method | |
| CN109713794A (en) | A kind of distributed intelligence self recoverable system and method | |
| CN103560512B (en) | A kind of medium voltage distribution network high reliability closed loop mode of connection | |
| CN208753979U (en) | A kind of low-voltage distribution system | |
| CN114407734B (en) | Flexible traction power supply system and protection method | |
| CN208862570U (en) | Ring-main unit and bicyclic net type power distribution network | |
| CN202221921U (en) | Transformer station standby power automatic switching system having open-phase protection function | |
| CN107611939B (en) | Regional power supply looped network fault quick isolation and load transfer method | |
| CN109066603A (en) | A kind of low-voltage distribution system | |
| CN113013851A (en) | Distributed intelligent power distribution automation system | |
| CN104218457A (en) | Power distribution device and electric master system thereof | |
| CN108923393B (en) | Method for isolating faults in station of station integrated power distribution terminal | |
| CN204271745U (en) | Automatic switching device of standby power supply system | |
| CN107147090B (en) | Bilateral united-hop device and bilateral united-hop protection system based on optical fiber communication | |
| CN207853185U (en) | The female simultaneous other system structure of substation | |
| CN203481822U (en) | Closed loop power supply model of medium voltage 10 kilovolt power distribution network | |
| CN109510193A (en) | A kind of distribution switchyard segmentation backup auto-activating device and its operation method | |
| CN110635562A (en) | Self-adaptive area spare power automatic switching device and self-adaptive area spare power automatic switching method | |
| CN205304391U (en) | Voltage switches return circuit | |
| CN109613394A (en) | A kind of intelligent distribution making alive time type fault section method of discrimination on the spot | |
| CN201860172U (en) | Automatic looped network type distribution network based on reclosers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |