CN105552858B - The distribution network failure processing method being latched using region - Google Patents
The distribution network failure processing method being latched using region Download PDFInfo
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- CN105552858B CN105552858B CN201510970661.1A CN201510970661A CN105552858B CN 105552858 B CN105552858 B CN 105552858B CN 201510970661 A CN201510970661 A CN 201510970661A CN 105552858 B CN105552858 B CN 105552858B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of distribution network failure processing methods being latched using region, two GOOSE multicast address are set for every platform intelligent switch in power distribution network, while described two GOOSE multicast address are respectively allocated to two adjacent the first distribution regions and the second distribution region of every intelligent switch connection；When power distribution network breaks down and electric current is from first distribution field flow orientation the second distribution region, intelligent switch between two distribution regions sends block signal to the first GOOSE multicast address, and the intelligent switch in the corresponding first distribution region of the first GOOSE multicast address is latched after receiving block signal.The present invention transmits block signal in fault treating procedure using GOOSE communications, realizes that failure quickly isolates, and will not cause tripping of bypassing the immediate leadership, and setting is simple, practical application is strong.
Description
Technical field
The invention belongs to the FEEDER AUTOMATION fields of distribution automation field, and in particular to a kind of to be latched using region
Distribution network failure processing method.
Background technology
Distribution network line is more segmentations, multiple-branching construction or is the multi-stage cascade structures such as switching station, ring main unit, due to supplying
Electric radius is shorter, conductor cross-section is larger, and switches at different levels are difficult to realize selectivity according to short circuit current size, and gone out by substation
It makes a slip of the tongue and flows the limitation in time limit, it is difficult to which the setting delay time limit realizes selectivity.Therefore, when line fault, conventional overcurrent protection can not
Accurate isolated fault can not restore the power supply in non-faulting area, need by feed line automatization system.
Feed line automatization system is the important component of power distribution automation, is divided in the way of breakdown judge and processing
Class can be broadly divided into centralized and distributed two class.
Centralized feed line automatization system will be mounted on the intelligent electronic device of each switch（IED）The data transmission of acquisition
To main website, fault zone positioning is carried out from main website and assigns troubleshooting order to the IED of respective switch.Centralized feeder line is automatic
Change system is big to the dependence of communication network and main website, and main website information to be treated is more, longer to the processing time of failure, and
It can bypass the immediate leadership in fault treating procedure and trip and expand the coverage of accident.
Distributed automatic system does not need to main website and Intellectualized Switchgear is relied on to cooperate with regard to that can reach Fault Isolation
The purpose to restore electricity with non-faulting area.Distributed feed line automatization system mainly include automatic Switching mutual cooperation pattern and
Two class of face protected mode.Automatic Switching mutual cooperation pattern does not need to communication system and can be achieved with feeder automation function, but
There are problems that tripping of bypassing the immediate leadership in fault treating procedure.The feed line automatization system of face protected mode is by between intelligent switch
It communicates to realize feeder automation function, since the communication speeds such as RS485, CAN of use are not fast enough, in process of fault isolation
There is also trippings of bypassing the immediate leadership.In addition, each intelligent switch needs to collect other all intelligent switch in institute's protection domain in the protection of face
Information, when the intelligent switch in institute's protection domain is more, as protection domain be switching station busbar when, then all outlets pair
The IED answered will take into account, not only higher to the real-time of communication network, reliability requirement, and engineering installation is complicated, distribution
When web frame changes, it is required for resetting.
Invention content
In view of this, it is a primary object of the present invention to provide a kind of distribution network failure processing side being latched using region
Method.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
The embodiment of the present invention provides a kind of distribution network failure processing method being latched using region, and this method is：For distribution
Every intelligent switch in net sets two GOOSE multicast address, while described two GOOSE multicast address are respectively allocated to
Two adjacent the first distribution regions and the second distribution region of every intelligent switch connection；When power distribution network breaks down simultaneously
And electric current from first distribution field flow orientation the second distribution region when, intelligent switch between two distribution regions is to the first GOOSE
Multicast address sends block signal, and the intelligent switch in the corresponding first distribution region of the first GOOSE multicast address receives
It is latched after block signal.
In said program, this method further includes：When power distribution network breaks down and electric current is from the second distribution field flow orientation
During one distribution region, intelligent switch between two distribution regions sends block signal to the 2nd GOOSE multicast address, and described the
Intelligent switch in the corresponding second distribution region of two GOOSE multicast address is latched after receiving block signal.
In said program, after being latched after the intelligent switch reception block signal, between two distribution regions
Intelligent switch sends sub-gate signal to GOOSE multicast address, after the intelligent switch receives sub-gate signal, the intelligent switch point
Lock is simultaneously latched combined floodgate.
In said program, after the intelligent switch receives sub-gate signal, when the intelligent switch is in gate-dividing state, institute
It states intelligent switch and is directly latched combined floodgate.
In said program, the block signal is divided into the first block signal, the second block signal, when the intelligent switch connects
Receive after the first block signal after latch switch first time just separating brake again；After the intelligent switch receives the second block signal
Just separating brake, second time are more than at the first time again after second time of latch switch.
Compared with prior art, beneficial effects of the present invention：
The present invention transmits block signal in fault treating procedure using GOOSE communications, realizes that failure quickly isolates, and not
Tripping of bypassing the immediate leadership can be caused, and set simply, practical application is strong.
Description of the drawings
Fig. 1 is the power distribution network region division schematic diagram of the present invention；
Fig. 2 is the open loop distribution network failure process flow of the present invention；
Fig. 3 is the closed loop power distribution net troubleshooting process of the present invention；
Fig. 4 is the single supply radial distribution networks troubleshooting process of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is 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.
The embodiment of the present invention provides a kind of distribution network failure processing method being latched using region, and this method is：For distribution
Every intelligent switch in net sets two GOOSE multicast address, while described two GOOSE multicast address are respectively allocated to
Two adjacent the first distribution regions and the second distribution region of every intelligent switch connection；When power distribution network breaks down simultaneously
And electric current from first distribution field flow orientation the second distribution region when, intelligent switch between two distribution regions is to the first GOOSE
Multicast address sends block signal, and the intelligent switch in the corresponding first distribution region of the first GOOSE multicast address receives
It is latched after block signal.
This method further includes：When power distribution network breaks down and electric current is from second the first distribution of distribution field flow orientation region
When, the intelligent switch between two distribution regions sends block signal, the 2nd GOOSE groups to the 2nd GOOSE multicast address
It broadcasts after the intelligent switch in the corresponding second distribution region in address receives block signal and is latched.
The intelligent switch receives be latched after block signal after, intelligent switch between two distribution regions to
GOOSE multicast address sends sub-gate signal, after the intelligent switch receives sub-gate signal, the intelligent switch separating brake and closed bite
Lock.
After the intelligent switch receives sub-gate signal, when the intelligent switch is in gate-dividing state, the intelligent switch
Directly locking is closed a floodgate.
The block signal is divided into the first block signal, the second block signal, is closed when the intelligent switch receives first
Just separating brake again after latch switch first time after lock signal；The intelligent switch receives latch switch after the second block signal
Just separating brake, second time are more than at the first time again after two times.
In with typical distribution net shown in FIG. 1, S1, S2 be substation's outlet switch, D11, D12, D13, D14, Z11,
D21, D22 are block switch, and L is interconnection switch.It is that each block switch and interconnection switch are equipped with voltage, Current Mutual Inductance in the present invention
Device and the IED with protection, control function and GOOSE communication functions so as to form intelligent switch, realize that voltage, electric current are adopted
The automatic divide-shut brake of collection and switch.
Definition is a distribution region by the power distribution network that one group of switch adjacent on circuit surrounds（Abbreviation region）, such as Fig. 1
Shown in middle dotted line.If define Z（D1, D2 ..., Dx）Represent by switch D1, D2 ..., the distribution regions that surround of Dx, then can in Fig. 1
It is divided into 9 distribution regions, respectively Z（S1, D11）、Z（D11, D12, Z11）、Z（Z11,0）、Z（D12, D13）、Z（D13,
D14）、Z（D14, L）、Z（S2, D21）、Z（D21, D22）、Z（D22, L）, wherein 0 represents line end.
A GOOSE multicast address, respectively MAC are distributed for each distribution region（S1, D11）、MAC（D11, D12,
Z11）、MAC（Z11,0）、MAC（D12, D13）、MAC（D13, D14）、MAC（D14, L）、MAC （S2, D21）、MAC （D21,
D22）、MAC （D22, L）, multicast address for filtering and receive GOOSE message, when intelligent switch by some GOOSE multicast
Location as a purpose address send information when, the IED there is provided this multicast address can receive this message, and other are not provided with
The intelligent switch of this multicast address does not receive this message.As shown in fig. 1, such as intelligent switch D11, D12, Z11 are provided with
MAC（D11, D12, Z11）Multicast address, when intelligent switch D12 sending destinations location be MAC（D11, D12, Z11）GOOSE
During message, then only D11, Z11 receive this message, other intelligent switch do not receive.
Because every intelligent switch connects two adjacent distribution regions, referred to as the first distribution region and the second distribution region,
Therefore two GOOSE multicast address, respectively the first GOOSE multicast address and the 2nd GOOSE multicasts are set for every intelligent switch
Address, the first GOOSE multicast address are the GOOSE multicast address in the first distribution region, and the 2nd GOOSE multicast address is matched for second
The GOOSE multicast address in electric region.By taking D12 in Fig. 1 as an example, the adjacent area of D12 is Z（D11, D12, Z11）And Z（D12,
D13）If with Z（D11, D12, Z11）As the adjacent first distribution region of D12, then the second distribution region is Z（D12, D13）.
Intelligent switch D12 can set two GOOSE multicast address, respectively MAC（D11, D12, Z11）And MAC（D12, D13）, MAC
（D11, D12, Z11）Corresponding first distribution region, MAC（D12, D13）Corresponding second distribution region.
Voltage, the electric current of every intelligent switch acquisition circuit, and identify current direction, then the electric current for flowing through either switch is deposited
In two kinds of current directions：Direction one is to flow into the second distribution region by the first distribution region, and direction two is by the second distribution region
Flow into the first distribution region.When a failure occurs it, if current direction is to flow into the second distribution region, intelligence by the first distribution region
It can switch and block signal is sent on the first GOOSE multicast address, that is, block signal is sent to the first distribution region；If electric current
Direction is to flow into the first distribution region by the second distribution region, then intelligent switch sends locking on the 2nd GOOSE multicast address
Signal, that is, send block signal to the second distribution region；If fault current is not detected, do not sent to any multicast address
Block signal.For example, for the intelligent switch D12, if detecting fault current by Z（D11, D12, Z11）Field flow orientation Z
（D12, D13）Region, then with MAC（D11, D12, Z11）Address sends block signal to multicast address as a purpose.
After other intelligent switch in the distribution region receive block signal, latch switch certain time, and surround
The intelligent switch of fault zone will not receive block signal, then can separating brake, and to the GOOSE of negative direction while separating brake immediately
Multicast address sends sub-gate signal, allows the switch trip that fault current is not detected, and so as to quickly isolate trouble point, and will not draw
Act tripping of bypassing the immediate leadership.
Embodiment：
The specific fault treating procedure of the present invention.
（1）Open loop distribution network failure processing method
By taking F point failures in open loop power distribution network shown in Fig. 2 as an example, trouble point is between D13 and D14.Transformer substation switch
S1 does not have the function of intelligent switch, and S1 settings 0.3s is delayed（The differential delay of one time）Standby as this circuit is protected
Shield is Z for D11 fault currents direction after breaking down（S1, D11）Flow to Z（D12, D13）, for D12 fault current sides
To for Z（D11, D12, Z11）Flow to Z（D12, D13）, it is Z for D13 fault currents direction（D12, D13）Flow to Z（D13,
D14）.Therefore, D11 is detected after fault current immediately to MAC（S1, D11）Send X1 block signals（Although S1 cannot be received）,
D12 is detected after fault current immediately to MAC（D11, D12, Z11）X1 block signals are sent, D13 is stood after detecting fault current
I.e. to MAC（D12, D13）Send X1 block signals.
Consider from reliability perspectives, in the case of guarding, the IED in intelligent switch can be examined after failure generation in t1=20ms
Fault current is measured, GOOSE message transmission can be transmitted in t2=10ms, and the tripping exit relay actuation time of IED is small
In t3=15ms, switch using breaker can the tripping in t4=60ms, and IED can be detected after failure removal in t5=20ms
Fault current disappears.It enables, Td=t4+t5.
Because the intelligent switch for surrounding fault zone will not receive block signal, therefore each intelligent switch is in t1+t2=30ms
Judge whether to receive X1 block signals, if do not received, such as Fig. 2（a）In D13, then drive tripping exit relay, total goes out
The mouth time is less than T0=t1+t2+t3=45ms, and failure can be cut off in T0+t4=105ms.
Fig. 2（a）In, D11, D12 switch can receive X1 block signals and illustrate failure in other regions, and D11, D12 needs are hided
The fault clearing time of D13 switches is crossed, then driving outlet during T1=T0+Td=125ms after failure generation can ensure in this way
The selectivity of D13 switches, while take into account D13 according to can also cut off in the case of dynamic, reduces power failure range to the maximum extent, at this time D11,
The fault clearing time of D12 is T1+t4=185ms.
Such as Fig. 2（b）Shown in, D11, D12, once receiving X1 signals, send X2 locking letters elsewhere immediately in t1+t2=30ms
Number, D11 switch receive X2 signals after, by Outlet time delay to failure occur after T2=T1+Td=205ms when driving export,
It can ensure that D11 will not malfunction when D12 cuts off failure as standby in this way.D12 is also occurred according to dynamic low probability complex situations
It can not consider.
When reclosing is not put into, D13 trippings simultaneously will be to the region Z of fault current negative direction（D13, D14）Send X3
Separating brake block signal, such as Fig. 2（c）Shown, locking D14 closes a floodgate, so as to isolated fault region.When reclosing is put into, D13 trippings
After carry out reclosing, successful reclosing restores normal operating mode；Reclosing failure D13 Accelerated trips, and such as Fig. 2（c）It is shown to therefore
Hinder the region Z of electric current negative direction（D13, D14）X3 separating brake block signals are sent, locking D14 closes a floodgate, so as to isolated fault region.
Fig. 2（d）Showing D13, there is a situation where according to moving, D13 occurs will be immediately to the area of fault current negative direction after evidence is moved
Domain Z（D13, D14）X3 separating brake block signals are sent, locking D14 closes a floodgate.D12 as D13 standby through T1+t4=185ms trippings
Afterwards, when reclosing is not put into, D12 is to the region Z of fault current negative direction（D12, D13）X3 separating brake block signals are sent, are led to
Know D13 separating brakes and be latched combined floodgate, do not influence Fault Isolation although D13 separating brakes are according to moving, Fault Isolation range at this time includes Z
（D12, D13）And Z（D13, D14）.When reclosing is put into, reclosing is carried out after D12 trippings, successful reclosing restores Z（D12,
D13）And Z（D13, D14）Operation.Interconnection switch L is detected after the decompression of side by the T that is delayedLIt closes a floodgate, such as Fig. 2（e）It is shown, it is extensive
Multiple Z（D14, L）The power supply in region, TLAbove-mentioned failure generation be should be greater than to the time of reclosing failure.
Processing method when other regions are broken down with it is above-mentioned similar, no longer illustrate one by one herein, need to illustrate
, when trouble point is between block switch and interconnection switch, interconnection switch can be blocked, without closing a floodgate.
（2）Closed loop power distribution net fault handling method
With Fig. 3（a）In shown closed loop ring power distribution network for F point failures, interconnection switch L is in "on" position, trouble point
Between D13 and D14.Transformer substation switch S1, S2 setting 0.3s are delayed, and after failure occurs, D11 is to MAC（S1, D11）It sends
X1 block signals, D12 is to MAC（D11, D12, Z11）X1 block signals are sent, D13 is to MAC（D12, D13）Send X1 locking letters
Number, and D14 is to MAC（D14, L）X1 block signals are sent, L is to MAC（D22, L）X1 block signals are sent, D22 is to MAC（D21,
D22）X1 block signals are sent, D21 is to MAC（S2, D21）Send X1 block signals.
Equally, IED can detect fault current in t1=20ms after failure generation, GOOSE message transmission can t2=
It being transmitted in 10ms, the tripping exit relay actuation time of IED is less than t3=15ms, and switch can trip in t4=60ms,
And IED can detect that fault current disappears after failure removal in t5=20ms.It enables, Td=t4+t5.
Because the intelligent switch for surrounding fault zone will not receive block signal, therefore each intelligent switch is in t1+t2=30ms
Judge whether to receive X1 block signals, if do not received, such as Fig. 3（a）In D13 and D14, then drive tripping exit relay,
Total Outlet time is less than T0=t1+t2+t3=45ms, can cut off failure in T0+t4=105ms.
Fig. 3（a）In, other than S1, S2, Z11, D13, D14, other intelligent switch can receive X1 block signals, prolong first
When T1=T0+Td=125ms when driving outlet, can ensure in this way D13, D14 switch selectivity, through T1 delay switch therefore
The barrier mute time is T1+t4=185ms.
Such as Fig. 3（b）Shown in, the intelligent switch for receiving X1 signals sends X2 block signals elsewhere immediately, receives opening for X2 signals
Driving exports when closing T2=T1+Td=205ms after Outlet time delay occurs to failure by D11, D22, D21, can ensure in this way
D12, L cut off failure as standby, and other switches will not malfunction.D12, L are also occurred according to dynamic low probability complex situations
It can not consider.
When reclosing is not put into, D13 trippings simultaneously will be to the region Z of fault current negative direction（D13, D14）Send X3
Separating brake block signal, D14 trippings simultaneously will be to the region Z of fault current negative direction（D13, D14）X3 separating brake block signals are sent,
Such as Fig. 3（c）Shown, D13 and D14 receive X3 signal blocks combined floodgate, so as to isolated fault region.When reclosing is put into, D13 and
Reclosing is carried out after D14 trippings, successful reclosing restores normal operating mode；Reclosing failure D13, D14 trip, and such as Fig. 3（c）Institute
Show and send X3 separating brake block signals, locking D13, D14 close a floodgate, so as to isolated fault region.
Fig. 3（d）Showing D13, there is a situation where according to moving, D13 occurs will be immediately to the area of fault current negative direction after evidence is moved
Domain Z（D13, D14）X3 separating brake block signals are sent, locking D14 closes a floodgate.After D12 is as the standby tripping of D13, when reclosing not
During input, D12 is to the region Z of fault current negative direction（D12, D13）X3 separating brake block signals are sent, notify D13 separating brakes and are closed
Sealed lock does not influence Fault Isolation although D13 separating brakes are according to moving, and Fault Isolation range at this time includes Z（D12, D13）And Z
（D13, D14）, such as Fig. 3（e）It is shown.When reclosing is put into, reclosing is carried out after D12 trippings, successful reclosing restores Z（D12,
D13）And Z（D13, D14）Operation, but D14 is constantly in separating brake blocking at this time, and operation with closed ring becomes for open loop operation, but
It does not influence to power, restoring former operating status needs artificial treatment.
（3）Single supply radial distribution networks fault handling method
To the radial distribution networks of single supply power supply, electric current only has a kind of direction, when breaking down, directly to specified
GOOSE multicast address sends block signal, you can realizes Fault Isolation.The radial distribution of single supply power supply as shown in Figure 4
Net because electric current only exists a direction, therefore each intelligent switch only detects overcurrent, does not need to collection voltages and carrys out failure judgement
Current direction.When breaking down, D1 is only to Z（S1, D1）Region sends GOOSE message, and D2 is only to Z（D1, D2, Z1）Region is sent
GOOSE message, D3 is only to Z（D2, D3）Region sends GOOSE message, and fault handling method is such as（1）The processing of open loop distribution network failure
It is identical in method, it can only realize Fault Isolation, it is impossible to realize that interconnection switch L closes a floodgate and power.
The present invention can realize that failure quickly isolates and non-faulting area restores electricity, compared with prior art, Bu Huiyin
Tripping of bypassing the immediate leadership is acted, and is set simply, practical application is strong.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (5)
1. a kind of distribution network failure processing method being latched using region, which is characterized in that this method is：It is every in power distribution network
Platform intelligent switch sets two GOOSE multicast address, while described two GOOSE multicast address is respectively allocated to every described
Two adjacent the first distribution regions and the second distribution region of intelligent switch connection；When power distribution network break down and electric current from
During first distribution field flow orientation the second distribution region, intelligent switch between two distribution regions is to the first GOOSE multicast address
Send block signal, the intelligent switch in the corresponding first distribution region of the first GOOSE multicast address receives block signal
After be latched.
2. the distribution network failure processing method according to claim 1 being latched using region, which is characterized in that this method is also
Including：When power distribution network breaks down and electric current is from second distribution field flow orientation the first distribution region, two distribution regions it
Between intelligent switch send block signal to the 2nd GOOSE multicast address, the 2nd GOOSE multicast address corresponding second matches
Intelligent switch in electric region is latched after receiving block signal.
3. the distribution network failure processing method according to claim 1 or 2 being latched using region, it is characterised in that：It is described
After being latched after intelligent switch reception block signal in the distribution region of fault current opposite direction, two distribution regions
Between intelligent switch send sub-gate signal to the GOOSE multicast address of the fault current same direction, the fault current is identical
After intelligent switch in the distribution region in direction receives sub-gate signal, the intelligence in the distribution region of the fault current same direction
Separating brake can be switched and be latched combined floodgate.
4. the distribution network failure processing method according to claim 3 being latched using region, it is characterised in that：The failure
After intelligent switch in the distribution region of the electric current same direction receives sub-gate signal, when the distribution of the fault current same direction
When intelligent switch in region is in gate-dividing state, the intelligent switch in the distribution region of the fault current same direction is direct
Locking is closed a floodgate.
5. the distribution network failure processing method according to claim 1 being latched using region, it is characterised in that：The locking
Signal is divided into the first block signal, the second block signal, when the intelligence in the distribution region of the fault current opposite direction is opened
Pass receives after the first block signal after latch switch first time just separating brake again；The distribution area of the fault current opposite direction
Intelligent switch in domain receives after the second block signal that just separating brake, second time are more than again after the second time of latch switch
At the first time.
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| CN105896496A (en) * | 2016-06-15 | 2016-08-24 | 深圳市粤能电气有限公司 | Multi-stage differential protection power distribution automation device employing magnetic-control rapid circuit breaker |
| CN109038824B (en) * | 2018-08-16 | 2021-12-10 | 南京南瑞继保电气有限公司 | Distributed feeder automation method |
| CN109031047B (en) * | 2018-08-24 | 2023-05-05 | 西南交通大学 | Fault detection device and method for electrified railway AT station |
| CN109412125B (en) * | 2018-11-13 | 2019-12-06 | 南京因泰莱电器股份有限公司 | Fully-adaptive override-preventing protection method suitable for complex power distribution network |
| CN109449896A (en) * | 2018-11-29 | 2019-03-08 | 西安西瑞控制技术股份有限公司 | A kind of override trip prevention method of switching station |
| CN110336383B (en) * | 2019-08-08 | 2021-07-23 | 国网冀北电力有限公司秦皇岛供电公司 | Distribution network feeder automatic system |
| CN114050546A (en) * | 2021-11-17 | 2022-02-15 | 贵州电网有限责任公司 | Reclosing method for cooperatively starting network access line of small hydropower station |
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