CN109950883A - Protection supervisory equipment and protection investigating method for distribution network automated switch - Google Patents
Protection supervisory equipment and protection investigating method for distribution network automated switch Download PDFInfo
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- CN109950883A CN109950883A CN201910361642.7A CN201910361642A CN109950883A CN 109950883 A CN109950883 A CN 109950883A CN 201910361642 A CN201910361642 A CN 201910361642A CN 109950883 A CN109950883 A CN 109950883A
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- 238000009826 distribution Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 44
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims description 29
- 230000005856 abnormality Effects 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 abstract description 21
- 238000010586 diagram Methods 0.000 description 21
- 230000006837 decompression Effects 0.000 description 11
- 230000033001 locomotion Effects 0.000 description 10
- 238000003825 pressing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000011664 signaling Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 230000000750 progressive effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of protection supervisory equipment for distribution network automated switch and protection investigating methods, in addition to circuit parameter Acquisition Circuit, switching value input circuit, communication interface, control loop, outputting circuit for relay, the signal acquisition circuit being connect with circuit parameter Acquisition Circuit, installation's power source, and respectively and outside the controller of each section circuit connection, it further include summing circuit and the first display device being connect with summing circuit, the first end of summing circuit is connect with the first relay for acquiring quick-break electric current for the protective current acquisition module being connected in circuit parameter Acquisition Circuit, second end is connect with the second relay for acquiring overcurrent for being connected to protective current acquisition module, for being summed to obtain electric current and value to quick-break electric current and overcurrent, and electric current and value are shown by the first display device, Help the specific location that operation maintenance personnel on site determines feeder fault point.
Description
Technical field
The present invention relates to distribution network technology fields, more particularly to a kind of protection observing and controlling for distribution network automated switch
Device and protection investigating method.
Background technique
With the raising that the continuous development and user of distribution automation technology require power supply reliability, distribution automation
Construction and operation are particularly important, and are laid a good foundation for Fault Isolation and fast quick-recovery non-faulting block supply.
Wherein, feeder automation is distribution network automated important component.It realizes feeder automation, needs rationally
Distribution net work structure, have the condition of ring network power supply；The operation machine switched in each loop networks switch, on-load switch and street power distribution station
Structure must have the function of remote operation；Must have reliable switch operation device power supply in loop-network switch cabinet and for protecting observing and controlling
The equipment power supply of device (FTU), communication equipment；Has communication system that is reliable, not being affected by the external environment.
Feeder automation in normal state, monitors state and the feeder line electricity of feeder line section switch and interconnection switch in real time
Stream, voltage condition realize a distant place for line switching or switch closing and switch opening operate on the spot.Failure logging, and energy are obtained in failure
Automatic discrimination and isolation feeder fault section, rapidly restore electricity to non-faulting region.Wherein fault location, isolation and automatic extensive
It is multiple significant to the reliability for improving power supply and the power off time for shortening non-faulting area.
Fault location, isolation and the automatic recovery of power supply of feeder line are the unique functions of feeder automation, by breaker, segmentation
System composed by device automatically can position failure, pass through the sequence of switchgear when permanent fault occurs for feeder line
Fault Isolation is realized in movement；Load transfer is realized in the power distribution network of loop-net operation or ring network structure but open loop operation, restores to supply
Electricity.When transient fault occurs, usually because of disengagement failure electric current after, failure disappears automatically, can be by breaker automatic reclosing
And restore the power supply to load.
As it can be seen that a kind of important device in the feeder automation of power distribution network is exactly the switch being set between substation
Automatic Switching in cabinet.However, in practical applications, automatic Switching itself will appear the event such as switch failure, communication failure
Barrier leads to the failure of the excision to feeder fault point or isolation failure, so that operation maintenance personnel can not intuitively determine feeder fault point
Specific location, cause complicated test service work, and be unfavorable for the quick reparation to distribution network failure.
So that operation maintenance personnel is determined the specific location of feeder fault point more conveniently, mitigates the work pressure of operation maintenance personnel
Power accelerates the reparation to distribution network failure, is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of the present invention is to provide a kind of protection supervisory equipments for distribution network automated switch and protection observing and controlling side
Method mitigates the operating pressure of operation maintenance personnel, adds for making operation maintenance personnel determine the specific location of feeder fault point more conveniently
Fastly to the reparation of distribution network failure.
In order to solve the above technical problems, the present invention provides a kind of protection supervisory equipment for distribution network automated switch,
Including circuit parameter Acquisition Circuit, switching value input circuit, communication interface, control loop, outputting circuit for relay, with the electricity
The signal acquisition circuit of road parameter acquisition circuit connection, installation's power source, and respectively with the circuit parameter Acquisition Circuit, described
Switching value input circuit, the communication interface, the control loop, the relay output loop, the signal acquisition circuit
The controller connected with described device power supply, the circuit that the controller is used to be acquired according to the circuit parameter Acquisition Circuit are joined
The on-off model of several and switching value input circuit input controls the control loop and the outputting circuit for relay is held
Row protection act, further includes:
First end is with the protective current acquisition module that is connected in the circuit parameter Acquisition Circuit for acquiring quick-break
The first relay connection of electric current, second end be connected to the protective current acquisition module for acquiring the of overcurrent
The summing circuit of two relays connection, for being summed to obtain electric current and value to the quick-break electric current and the overcurrent；
The first display device being connect with the summing circuit, for showing the electric current and value.
Optionally, first display device is specially touch screen.
It optionally, further include the first indicator light circuit being connect with the summing circuit；
Wherein, the indicator light in first indicator light circuit is lighted when the electric current and value are greater than preset value.
It optionally, further include the first signal alarm window, second signal alarm window and the third letter being connect with the controller
Number alarm window；
The controller controls the first signal alarm window when corresponding automatic Switching breaks down excision failure
It lights, controls the second signal alarm window when the automatic Switching breaks down isolation failure and light, described automatic
Switching, which occurs controlling the third signal alarm window when communication abnormality, to be lighted.
It optionally, further include the second indicator light circuit being connect with the controller, third indicator light circuit and the 4th finger
Indication lamp circuit；
The controller controls second indicator light circuit when corresponding automatic Switching breaks down excision failure
In indicator light light, control finger in the third indicator light circuit when the automatic Switching breaks down isolation failure
Show that lamp lights, the indicator light controlled in the 4th indicator light circuit when communication abnormality occurs in the automatic Switching lights.
It optionally, further include the second display of the status information for showing automatic Switching being connect with the controller
Device.
It optionally, further include the wireless communicator being connect with the controller.
Optionally, the wireless communicator is specifically Wi-Fi communicator.
Optionally, the wireless communicator is specifically GPRS communicator.
In order to solve the above technical problems, the present invention also provides a kind of protection observing and controlling sides for distribution network automated switch
Method, based on the protection supervisory equipment for being used for distribution network automated switch described in above-mentioned any one, comprising:
Electric current and value that summing circuit is summed are saved as into logout SOE and are uploaded to specified address.
Protection supervisory equipment provided by the present invention for distribution network automated switch, in addition to circuit parameter acquires electricity
Road, switching value input circuit, communication interface, control loop, outputting circuit for relay, the letter being connect with circuit parameter Acquisition Circuit
Number Acquisition Circuit, installation's power source, and respectively with circuit parameter Acquisition Circuit, switching value input circuit, communication interface, control back
Outside the controller that road, relay output loop, signal acquisition circuit are connected with installation's power source, further include summing circuit and with ask
With the first display device of circuit connection, the first end of summing circuit and the protective current being connected in circuit parameter Acquisition Circuit
The connection of the first relay, second end and the use for being connected to protective current acquisition module for acquiring quick-break electric current of acquisition module
In the second relay connection of acquisition overcurrent, for being summed to obtain electric current and value to quick-break electric current and overcurrent,
First display device is for showing electric current and value.It, can be in the hope of by certainly by summing to quick-break electric current and overcurrent
The electric current of dynamic Switching is fault current when electric current reaches certain threshold value with value, and whether flows through event on automatic Switching
Barrier electric current is the important evidence for the specific location that live operation maintenance personnel determines feeder fault point, therefore compared with the prior art, this
The protection supervisory equipment that invention provides can make operation maintenance personnel determine the specific location of feeder fault point more conveniently, alleviate
The operating pressure of operation maintenance personnel accelerates the reparation to distribution network failure.The present invention also provides one kind for distribution network automated
The protection investigating method of switch has above-mentioned beneficial effect, and details are not described herein.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is that a kind of structure of the protection supervisory equipment for distribution network automated switch provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is a kind of schematic diagram of protection supervisory equipment control panel provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of another protection supervisory equipment control panel provided in an embodiment of the present invention；
Fig. 4 is a kind of failure removal logical schematic provided in an embodiment of the present invention；
Fig. 5 is a kind of Fault Isolation logical schematic provided in an embodiment of the present invention；
Fig. 6 is a kind of " 2-1 " Single-ring network Connection Mode schematic diagram provided in an embodiment of the present invention；
Fig. 7 (a) provides the first automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
It is intended to；
Fig. 7 (b) provides second of automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
It is intended to；
Fig. 7 (c) provides the third automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
It is intended to；
Fig. 7 (d) provides the 4th kind of automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
It is intended to；
Fig. 7 (e) provides the 5th kind of automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
It is intended to；
Fig. 8 (a) provides the first automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
Show schematic diagram；
Fig. 8 (b) provides second of automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
Show schematic diagram；
Fig. 8 (c) provides the third automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
Show schematic diagram；
Fig. 8 (d) provides the 4th kind of automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
Show schematic diagram；
Fig. 8 (e) provides the 5th kind of automation switch fault scene for the embodiment of the present invention provided in an embodiment of the present invention and shows
Show schematic diagram.
Specific embodiment
Core of the invention is to provide a kind of protection supervisory equipment for distribution network automated switch and protection observing and controlling side
Method mitigates the operating pressure of operation maintenance personnel, adds for making operation maintenance personnel determine the specific location of feeder fault point more conveniently
Fastly to the reparation of distribution network failure.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is that a kind of structure of the protection supervisory equipment for distribution network automated switch provided in an embodiment of the present invention is shown
It is intended to；Fig. 2 is a kind of schematic diagram of protection supervisory equipment control panel provided in an embodiment of the present invention；Fig. 3 is that the present invention is implemented
The schematic diagram for another protection supervisory equipment control panel that example provides.
As shown in Figure 1, the protection supervisory equipment provided in an embodiment of the present invention for distribution network automated switch includes electricity
Road parameter acquisition circuit, switching value input circuit, communication interface, control loop, outputting circuit for relay are acquired with circuit parameter
The signal acquisition circuit of circuit connection, installation's power source, and respectively with circuit parameter Acquisition Circuit, switching value input circuit, logical
The controller that letter interface, control loop, relay output loop, signal acquisition circuit are connected with installation's power source, controller are used for
It is based on controlling back according to the on-off model of the circuit parameter of circuit parameter Acquisition Circuit acquisition and switching value input circuit input
Road controls outputting circuit for relay and executes protection act, further includes:
First end is with the protective current acquisition module that is connected in circuit parameter Acquisition Circuit for acquiring quick-break electric current
The first relay SJ connection, second end be connected to protective current acquisition module for acquiring the second relay of overcurrent
The summing circuit of device TJ connection, for being summed to obtain electric current and value to quick-break electric current and overcurrent；
The first display device L1 being connect with summing circuit, for showing electric current and value.
In specific implementation, circuit parameter Acquisition Circuit includes the busbar voltage connecting with busbar voltage YMc, YMb, YMc
Acquisition module, the measurement current acquisition module being connect with triple line, protective current acquisition module, zero-sequence current acquisition module,
Middle quick-break overflow means are connect with protective current Acquisition Circuit, one end output the first relay of connection of quick-break overflow means
SJ, the second relay TJ, the second relay TJ of other end output connection are also controlled by distant jump signal.
The amount of opening the light input circuit includes distant place control signal end, spring energy-storage signal terminal, handcart activating terminal, handcart
Testing terminal, remote signalling terminal 5~12, remote signalling common end etc., and distant place control signal end, spring energy-storage signal terminal, handcart
Activating terminal, handcart testing terminal, remote signalling terminal 5~12 are connect with the anode of 24V installation's power source, remote signalling common end and 24V
The cathode of installation's power source connects.
Communication interface can use RS485 communication interface.
Control loop includes control device power supply (+, -) terminal, tripping input terminal, tripping outlet terminal, input of closing a floodgate
Terminal, anti-jump release-terminal, the outlet terminal that closes a floodgate jump position monitoring terminal, coincidence monitoring terminal, and relay output loop includes
Trip output terminal, combined floodgate output terminal and logic tripping terminal.
Wherein, control device power positive cathode is separately connected installation's power source end+KM and-KM, and tripping input terminal trips out
It is connect with switch TQ between mouth terminal and between the tripping output terminal both ends of relay output loop, while defeated tripping
Entering on the circuit of terminal further includes hand BRKR Breaker, to control trip operation；Combined floodgate input terminal, close a floodgate outlet terminal between with
And it is connect with switch HQ between the combined floodgate terminal both ends of relay output loop, while on the circuit of combined floodgate input terminal also
Including hand combination switch, to control feed motion.
Signal acquisition circuit includes trouble-signal (SJ) Acquisition Circuit, anticipating signal (YJ) Acquisition Circuit, plant failure
(GZJ) Acquisition Circuit, involution input (+, -) circuit etc., in trouble-signal (SJ) Acquisition Circuit, anticipating signal (YJ) acquisition electricity
It is also connected at road, plant failure (GZJ) Acquisition Circuit including signal power source, single-phase electric energy meter (DD), high-voltage circuitbreaker (DL)
Circuit, specifically as shown in Figure 1.
The connection of installation's power source is as shown in Figure 1.
On the basis of above-mentioned apparatus, protection supervisory equipment provided in an embodiment of the present invention further includes summing circuit and first
Display device L1, specific connection is referring to above and Fig. 1.
First display device L1 can use touch screen.The printed words of " fault current I >=" can be shown on touch screen.
When electric current and value are greater than some preset value, it is believed that event has been crossed at the automatic Switching upstream where protection supervisory equipment
Hinder electric current, in order to more intuitively remind the appearance of operation maintenance personnel fault current, protection observing and controlling dress provided in an embodiment of the present invention
Setting can also include the first indicator light circuit connecting with summing circuit；
Wherein, the indicator light in the first indicator light circuit is lighted when electric current and value are greater than preset value.
The panel effect of protection supervisory equipment provided in an embodiment of the present invention is illustrated as shown in Fig. 2, in addition to nameplate, for showing
Show that the display window of A phase current, B phase current, C phase current, voltage and current type select knob, condensation controller, luminous lamp switch, storage
Energy indicator light, quartile indicator light, coincidence indicator light, signal source select knob (OK), and divide-shut brake selects knob (1SA), protection
It trips output clamping (LP1), protects combined floodgate output clamping (LP2), be remotely controlled separating brake output clamping (LP3), remote control combined floodgate outlet pressure
Plate (LP4), reclosing function put into pressing plate (LP5), and it further includes the first display device L1 that synchronization function, which puts into pressing plate (LP6) outside,
It can wherein show the printed words such as " fault current I >=828A ".
Wherein, different colors is arranged in the indicator light of different function, as energy storage indicator light is set as yellow, quartile indicator light
It is set as green, coincidence indicator light is set as red；Different colors is arranged in the pressing plate of different function, if output clamping is using red
Color, function pressing plate use yellow；Connection sheet screw tightening formula pressing plate, open end should be mounted in top.
Further, each switch, knob should configure plastic lid with false-touch prevention.
The panel effect signal such as Fig. 3 for increasing the protection supervisory equipment of the first indicator light circuit, can be with other instructions
Fault current indicator light is arranged side by side in lamp.
Protection measure and control unit provided in an embodiment of the present invention is fixed in secondary small chamber cabinet door using installation by adhering mode,
Connect by Ethernet or RS485 bus with comprehensive control communication unit, correspondence should comprehensive control communication unit it is reserved 2 and
The above RJ45 network interface.
Protection supervisory equipment message provided in an embodiment of the present invention requires to include:
Sequence of events recording should classify, and be divided into equipment fault journal and automation equipment failure journal；
The intelligent distributed signal that protection supervisory equipment receives should be used as SOE record and save, as adjacent switch detects
Fault Isolation signal, the adjacent switch that failure removal signal, the adjacent switch that signal, the adjacent switch of fault current are sent are sent
Tripping signal, this Switch Communication fault-signal for sending etc.；
Dither signal should filter in sequence of events recording.
Protection supervisory equipment provided in an embodiment of the present invention for distribution network automated switch, in addition to circuit parameter acquires
Circuit, switching value input circuit, communication interface, control loop, outputting circuit for relay are connect with circuit parameter Acquisition Circuit
Signal acquisition circuit, installation's power source, and respectively with circuit parameter Acquisition Circuit, switching value input circuit, communication interface, control
Outside the controller that circuit, relay output loop, signal acquisition circuit are connected with installation's power source, further include summing circuit and with
First display device of summing circuit connection, the first end of summing circuit and the protection electricity being connected in circuit parameter Acquisition Circuit
The first relay connection for acquiring quick-break electric current of stream acquisition module and is connected to protective current acquisition module at second end
The second relay for acquiring overcurrent connects, for quick-break electric current and overcurrent summed to obtain electric current and
Value, the first display device is for showing electric current and value.It, can be in the hope of process by summing to quick-break electric current and overcurrent
Whether the electric current of automatic Switching is fault current when electric current reaches certain threshold value with value, and flow through on automatic Switching
Fault current is the important evidence for the specific location that live operation maintenance personnel determines feeder fault point, therefore compared with the prior art,
Protection supervisory equipment provided by the invention can make operation maintenance personnel determine the specific location of feeder fault point more conveniently, mitigate
The operating pressure of operation maintenance personnel, accelerates the reparation to distribution network failure.
On the basis of the above embodiments, in another embodiment, fail when automatic Switching failure itself is cut off,
When the problems such as Fault Isolation failure, communication failure, if can be shown at the scene, it is more favorable for live operation maintenance personnel positioning
Feeder fault point.
It is preferred, therefore, that the protection supervisory equipment for distribution network automated switch further includes connected to the controller the
One signal alarm window, second signal alarm window and third signal alarm window；
Controller controls the first signal alarm window when corresponding automatic Switching breaks down excision failure and lights, certainly
Control second signal alarm window lights when dynamic Switching breaks down isolation unsuccessfully, communication abnormality time control occurs in automatic Switching
Third signal alarm window processed lights.
Alternatively, the protection supervisory equipment for distribution network automated switch may include the second instruction connected to the controller
Circuit for lamp, third indicator light circuit and the 4th indicator light circuit；
Controller controls the instruction in the second indicator light circuit when corresponding automatic Switching breaks down excision failure
Lamp lights, and the indicator light when automatic Switching breaks down isolation failure in control third indicator light circuit lights, automatic
The indicator light controlled in the 4th indicator light circuit when communication abnormality occurs in Switching lights.
In specific implementation, the situations such as " failure removal failure ", " Fault Isolation failure " or " communication abnormality " can be by controlling
Device processed voluntarily judges, installs selection circuit and driving circuit additional between controller and signal alarm window or indicator light circuit
The indicator light controlled in corresponding signal alarm window or indicator light circuit lights, to prompt live operation maintenance personnel cheer and brightly
The fault condition of each automatic Switching, live operation maintenance personnel can clearly position feeder fault point accordingly.
In addition, the situations such as " failure removal failure ", " Fault Isolation failure " or " communication abnormality " can also be filled by display
It sets and is shown, the protection supervisory equipment for being accordingly used in distribution network automated switch can also include connected to the controller is used for
Show the second display device of the status information of automatic Switching.
Further, in order to save communication line, the protection supervisory equipment for distribution network automated switch can also be wrapped
Include wireless communicator connected to the controller.In specific implementation, wireless communicator specifically can using Wi-Fi communicator or
GPRS communicator etc..
Fig. 4 is a kind of failure removal logical schematic provided in an embodiment of the present invention；Fig. 5 is provided in an embodiment of the present invention
A kind of Fault Isolation logical schematic.
The logic for hereafter carrying out failure removal or Fault Isolation to automatic Switching is illustrated.
When breaking down on backbone, excision failure is switched by transformer station 10 kV outgoing line.Automatic Switching is protected on backbone
Shield measurement and control unit detects this cell failure, while with the intelligent distributed elements exchange fault message in left and right to determine failure
Section, checkout voltage is without switch separating brake excision after stream and keeps apart failure.
As shown in figure 4, automatic Switching itself detects fault initiating logic judgment (the logic judgment time suggests 2s), if
When there are side fault-free signal in faults itself and two sides, fault point side behind, if meeting figure within the logic judgment time
In other exit conditions, then capable of emitting trip signal；Tdz4 time (100ms is the switch motion time) is waited, if setting without tripping
Position failure removal mark.
It is fixed as shown in figure 5, if automatic Switching itself fault-free, and when two sides only have side and have a faulty electric current
Position failure is on front side of it and starts logic judgment (the logic judgment time suggests 2s)；When within the logic judgment time itself from there is pressure
To no pressure, coincidence is switched, then capable of emitting trip signal；Tdz4 time (100ms is the switch motion time) is waited, if setting without tripping
" Fault Isolation success " flag bit.
Fig. 6 is a kind of " 2-1 " Single-ring network Connection Mode schematic diagram provided in an embodiment of the present invention；Fig. 7 (a) is that the present invention is real
The embodiment of the present invention for applying example offer provides the first automation switch fault schematic diagram of a scenario；Fig. 7 (b) is the embodiment of the present invention
The embodiment of the present invention of offer provides second of automation switch fault schematic diagram of a scenario；Fig. 7 (c) provides for the embodiment of the present invention
The embodiment of the present invention provide the third automation switch fault schematic diagram of a scenario；Fig. 7 (d) is provided in an embodiment of the present invention
Inventive embodiments provide the 4th kind of automation switch fault schematic diagram of a scenario；Fig. 7 (e) is the present invention provided in an embodiment of the present invention
Embodiment provides the 5th kind of automation switch fault schematic diagram of a scenario；Fig. 8 (a) is that the present invention provided in an embodiment of the present invention is implemented
Example provides the first automation switch fault scene display schematic diagram；Fig. 8 (b) is that the present invention provided in an embodiment of the present invention is implemented
Example provides second of automation switch fault scene display schematic diagram；Fig. 8 (c) is that the present invention provided in an embodiment of the present invention is implemented
Example provides the third automation switch fault scene display schematic diagram；Fig. 8 (d) is that the present invention provided in an embodiment of the present invention is implemented
Example provides the 4th kind of automation switch fault scene display schematic diagram；Fig. 8 (e) is that the present invention provided in an embodiment of the present invention is implemented
Example provides the 5th kind of automation switch fault scene display schematic diagram.
Hereafter the mode of positioning feeder fault point is illustrated:
As shown in fig. 6, for route based on L1, L2, CB1, CB2 switch are power transformation by taking " 2-1 " Single-ring network Connection Mode as an example
The outlet switch stood, the #1-#3 ring network cabinet of L1, L2 and the inlet-outlet line switchgear distribution of #4 ring network cabinet are with the breaker of route PT, respectively
Automatic Switching (K1, K2, K3, K4, K5, K6, K7, K8, K21, K22, K23, K24, K25, K26) is provided in ring network cabinet,
603 switches represent branch switch and configure the breaker without route PT.Any block switch may be as contact on main line
Switch.
Scene one
Assuming that feeder fault point between K4 and K5, should be cut off failure by K4 originally, K5 isolated fault, due to K3, K4,
K5, K6 tripping are expanded to K2 movement, cut off failure, K7, which acts isolated fault, makes dispatcher shown in movement consequence such as Fig. 7 (a)
The position that can not judge real fault point increases trouble to the troubleshooting of dispatcher and live operation maintenance personnel, even more increases
Add the probability of no operation.
Scene two
Assuming that fault point still between K4 and K5, should be cut off failure, K5 isolated fault by K4 originally.
In terms of failure removal, due to K3, K4 communication failure, after CB1 tripping, K3, K4 switch detect communication abnormality, lose
Pressure, this switch are in coincidence, flow through fault current, therefore trip, excision failure, K2 detect adjacent switch communication abnormality,
Decompression, this switch are in coincidence, detect fault current trip operation, the faulty electric current of K1 bilateral, therefore are failure to actuate, so far,
Fault outage range is expanded to K2；
In terms of Fault Isolation, K5 detects that adjacent switch communication abnormality, decompression, this switch are in coincidence, but are not detected
Fault current, therefore be failure to actuate, fail to issue Fault Isolation pass signal, K5 isolated fault is unsuccessful；
Turn power supply aspect, the unilateral side interconnection switch K8 decompression does not receive in delay and turns after being isolated successfully because of communication failure
It is then failure to actuate for indicating and turning for demand, turns to power unsuccessful, the non-faulting region of K5 to K8 fails to restore electricity in time；
Shown in specific movement consequence such as Fig. 7 (b), make dispatcher that can not judge the position of real fault point, to dispatcher and
The troubleshooting of live operation maintenance personnel increases trouble, even more probability of the increase without operation.
Scene three
Assuming that fault point still between K4 and K5, should be cut off failure, K5 isolated fault by K4 originally；
In terms of failure removal, due to K3 communication failure, K4 tripping, after CB1 tripping, K4 monitors failure tripping, and hair is refused
Dynamic signal, still, K3 communication abnormality, decompression, this switch are in coincidence, and have and flow through fault current, therefore trip, excision event
Barrier, K2 detect that adjacent switch communication abnormality, decompression, this switch are in coincidence, detect fault current trip operation, K1 bilateral
Faulty electric current, therefore be failure to actuate, so far, fault outage range is expanded to K2；
In terms of Fault Isolation, K5 meets unilateral failure, decompression, own switch coincidence, K5 separating brake, isolated fault, hair isolation
Pass signal；
Turn power supply, the unilateral side interconnection switch K8 decompression, and receives in delay and turn after being isolated successfully for indicating and turning supply and demand
It asks, closes a floodgate and turn for success；
Shown in specific movement consequence such as Fig. 7 (c), it is easy to dispatcher be made to judge the position of feeder fault point by accident.
Scene four
Assuming that fault point is between K2 and K3, it originally should be by removing failure, K3 isolated fault；
In terms of failure removal, due to K2 communication failure, K1, K2 Switch Communication exception, decompression, this switch are in coincidence,
And have and flow through fault current, therefore trip, failure is cut off, communication abnormality, protection signal are sent out；So far, fault outage model
It encloses and is expanded to K1；
In terms of Fault Isolation, K3 is failure to actuate, and sends out communication abnormality signal；
Turn power supply aspect, the unilateral side interconnection switch K8 decompression, but delay in do not receive after be isolated successfully turn for indicate and
Turn to turn power supply failure for demand；
Shown in specific movement consequence such as Fig. 7 (d), it is easy to dispatcher be made to judge the position of feeder fault point by accident.
Scene five
Assuming that fault point is still between K2 and K3, it originally should be by removing failure, K3 isolated fault；
In terms of failure removal, due to K2 tripping, K1 receives tripping mark, decompression, this switch and is in coincidence, and has and flow through
Fault current, therefore trip, failure is cut off, protection signal is sent out；So far, fault outage range is expanded to K1；
In terms of Fault Isolation, K3 communication abnormality is failure to actuate, and sends out communication abnormality signal；
Turn power supply aspect, the unilateral side interconnection switch K8 decompression, but delay in do not receive after be isolated successfully turn for indicate and
Turn to turn power supply failure for demand；
Shown in specific movement consequence such as Fig. 7 (e), it is easy to dispatcher be made to judge the position of feeder fault point by accident.
After increasing signal alarm window or indicator light or the second display device, for scene one to scene five, scene fortune
Shown in the available information of dimension personnel such as Fig. 8 (a)~Fig. 8 (e), the failure feelings of each automatic Switching can be clearly determined
Condition, dispatcher and live operation maintenance personnel can intuitively judge the position of feeder fault point accordingly.In addition to " failure removal loses
Lose ", outside the situations such as " Fault Isolation failure " or " communication abnormality " are shown, can also to other situations such as " failure removal (at
Function) ", " Fault Isolation (success) ", " tripping " shown.
The corresponding each embodiment of protection supervisory equipment for distribution network automated switch as detailed above, it is basic herein
On, the invention also discloses the protection investigating methods for distribution network automated switch based on above-mentioned apparatus.
Protection investigating method provided in an embodiment of the present invention for distribution network automated switch is based on above-mentioned any one
The protection supervisory equipment of distribution network automated switch is used for described in embodiment, comprising:
Electric current and value that summing circuit is summed are saved as into logout SOE and are uploaded to specified address.
Further, can also include: for the protection investigating method of distribution network automated switch
The status signal of the status signal of failure removal and Fault Isolation is sent to the protection of main website and interconnection switch
Measure and control device.
On the display screen of main website, it can carry out keeping fault point very clear such as Fig. 8 (a)~Fig. 8 (e) display.
Above to a kind of protection supervisory equipment for distribution network automated switch provided by the present invention and protection observing and controlling
Method is described in detail.Each embodiment is described in a progressive manner in specification, what each embodiment stressed
It is the difference from other embodiments, the same or similar parts in each embodiment may refer to each other.For embodiment
For disclosed device, since it is corresponded to the methods disclosed in the examples, so be described relatively simple, related place referring to
Method part illustration.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
Protection scope in.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (10)
1. a kind of protection supervisory equipment for distribution network automated switch, including circuit parameter Acquisition Circuit, On-off signal
Circuit, communication interface, control loop, outputting circuit for relay, the signal acquisition electricity being connect with the circuit parameter Acquisition Circuit
Road, installation's power source, and respectively with the circuit parameter Acquisition Circuit, the switching value input circuit, the communication interface, institute
The controller that control loop, the relay output loop, the signal acquisition circuit are connected with described device power supply is stated, it is described
What the circuit parameter and the switching value input circuit that controller is used to be acquired according to the circuit parameter Acquisition Circuit inputted opens
It measures signal and controls the control loop and outputting circuit for relay execution protection act in pass, which is characterized in that further include:
First end is with the protective current acquisition module that is connected in the circuit parameter Acquisition Circuit for acquiring quick-break electric current
The connection of the first relay, second end be connected to the protective current acquisition module for acquire the second of overcurrent after
The summing circuit of electric appliance connection, for being summed to obtain electric current and value to the quick-break electric current and the overcurrent；
The first display device being connect with the summing circuit, for showing the electric current and value.
2. protection supervisory equipment according to claim 1, which is characterized in that first display device is specially touch-control
Screen.
3. protection supervisory equipment according to claim 1, which is characterized in that further include connect with the summing circuit
One indicator light circuit；
Wherein, the indicator light in first indicator light circuit is lighted when the electric current and value are greater than preset value.
4. protection supervisory equipment according to claim 1, which is characterized in that further include first connect with the controller
Signal alarm window, second signal alarm window and third signal alarm window；
The controller controls the first signal alarm window when corresponding automatic Switching breaks down excision failure and lights,
It controls the second signal alarm window when the automatic Switching breaks down isolation failure to light, in the automatic Switching
The third signal alarm window is controlled when appearance communication abnormality to light.
5. protection supervisory equipment according to claim 1, which is characterized in that further include second connect with the controller
Indicator light circuit, third indicator light circuit and the 4th indicator light circuit；
The controller controls in second indicator light circuit when corresponding automatic Switching breaks down excision failure
Indicator light lights, and the indicator light in the third indicator light circuit is controlled when the automatic Switching breaks down isolation failure
It lights, the indicator light controlled in the 4th indicator light circuit when communication abnormality occurs in the automatic Switching lights.
6. protection supervisory equipment according to claim 1, which is characterized in that further include being used for what the controller was connect
Show the second display device of the status information of automatic Switching.
7. protection supervisory equipment according to claim 1, which is characterized in that further include connect with the controller it is wireless
Communicator.
8. protection supervisory equipment according to claim 7, which is characterized in that the wireless communicator is specifically logical for Wi-Fi
Believe device.
9. protection supervisory equipment according to claim 7, which is characterized in that the wireless communicator is specifically GPRS communication
Device.
10. a kind of protection investigating method for distribution network automated switch, which is characterized in that any based on claim 1 to 9
The protection supervisory equipment of distribution network automated switch is used for described in one, comprising:
Electric current and value that summing circuit is summed are saved as into logout SOE and are uploaded to specified address.
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| CN201910361642.7A CN109950883A (en) | 2019-04-30 | 2019-04-30 | Protection supervisory equipment and protection investigating method for distribution network automated switch |
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| CN201910361642.7A CN109950883A (en) | 2019-04-30 | 2019-04-30 | Protection supervisory equipment and protection investigating method for distribution network automated switch |
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