CN109149528A - A kind of comprehensive back-up protection method of bus and device - Google Patents
A kind of comprehensive back-up protection method of bus and device Download PDFInfo
- Publication number
- CN109149528A CN109149528A CN201811177586.3A CN201811177586A CN109149528A CN 109149528 A CN109149528 A CN 109149528A CN 201811177586 A CN201811177586 A CN 201811177586A CN 109149528 A CN109149528 A CN 109149528A
- Authority
- CN
- China
- Prior art keywords
- line
- protection
- bus
- mother
- movement
- 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
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
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The embodiment of the present application provides a kind of comprehensive back-up protection method of bus and device comprising: judge that main transformer backup protection jumps the first mother or whether the second mother of main transformer backup protection jump is true；If so, then judge whether the zero sequence overcurrent element of first line acts；If movement, judges whether the zero sequence positive direction element of the first line acts or whether the PT of the first line breaks；If executing the comprehensive back-up protection movement of bus if the zero sequence positive direction element movement or PT of the first line break and jumping the first line.The embodiment of the present application can successively carry out jump the first mother or jump the second mother it is whether true, whether zero sequence overcurrent element acts, whether zero sequence positive direction element acts or route whether PT broken string judgement, and when meeting above-mentioned full terms, then this route of tripping, to realize quickly isolating for failure.
Description
Technical field
This application involves electric power system protection and control fields, in particular to a kind of comprehensive back-up protection side of bus
Method and device.
Background technique
Fast development of China's electric system Jing Guo recent decades, have become power grid maximum, most complicated in the world it
One.With on national network and large capacity, long distance power delivery, the access of transfer electricity from the west to the east implementation and new energy, power grid
Safety and stability problem is also increasingly shown especially, and the large-scale blackout investigation frequently occurred both at home and abroad in the past 30 years shows due to protection
The protection interlocking action occurred during malfunction, tripping and a wide range of power flow transfer of power grid, is to lead to fault spread, causes system
One of the key factor of system large-area power-cuts.110kV power network wiring generally takes closed loop design, the mode of open loop operation, generally
The phenomenon that in the presence of multistage statements based on collusion, power supply reliability is not high.And 220kV power supply point heavier for economically developed, supply load is serious
It is arranged side by side through mother to generally use two sections of buses of 220kV substation 110kV from the angle of economy and reliability for insufficient area
Operation, 110kV route double loop also paired running mode, since 110kV system protection substanceization configures, when 110kV route
It breaks down, and when corresponding protective device is because of reasons trippings such as plant failure, principle mismatch, fixed value adjusting mistakes, it would be possible to
All main transformer backup protection oversteppings of 220kV substation are caused, and non-selectivity expands scope of power outage, so as to cause multistation
Decompression seriously threatens power grid security.
Apply for content
In view of this, the embodiment of the present application provides a kind of comprehensive back-up protection method of bus and device.
In a first aspect, the embodiment of the present application provides a kind of comprehensive back-up protection method of bus, which comprises judgement
Main transformer backup protection jumps the first mother or whether the second mother of main transformer backup protection jump is true；If so, then judge first line
Zero sequence overcurrent element whether act；If movement, judge whether the zero sequence positive direction element of the first line acts or institute
Whether the PT for stating first line breaks；
If it is dynamic to execute the comprehensive back-up protection of bus if the zero sequence positive direction element movement or PT of the first line break
Make to jump the first line.
In a possible design, if the zero sequence overcurrent element of first line is not operating, judge that first line PT is disconnected
Whether line is true；If first line PT broken string is invalid, judge whether first line ground connection direction distancing element acts；If dynamic
Make, then executes the comprehensive back-up protection movement of bus and jump the first line.
In a possible design, if the zero sequence overcurrent element of first line is not operating, judge that first line PT is disconnected
Whether line is true；If first line PT broken string is invalid, judge whether the alternate direction distancing element of first line acts；If dynamic
Make, then executes the comprehensive back-up protection movement of bus and jump the first line.
In a possible design, if main transformer backup protection is jumped, the first mother is invalid and main transformer backup protection jumps second
Mother is invalid, then jumps first line without the comprehensive back-up protection movement of bus.
In a possible design, if first line zero sequence overcurrent element acts, and if first line zero sequence it is square
It is failure to actuate to element and PT breaks, then jump first line without the comprehensive back-up protection movement of bus.
Second aspect, a kind of bus Integrate Backup Protective Equipment, described device includes: contact judgment module, for judging
Main transformer backup protection jumps the first mother or whether the second mother of main transformer backup protection jump is true；Zero-sequence current protection module, is used for
Judge that the zero sequence of first line crosses whether flow module acts；Breaking protection module, for judging the zero sequence of the first line just
Whether direction module acts or whether the PT of first line broken string module breaks；Bus integrates back-up protection module, is used for
It executes the comprehensive back-up protection movement of bus and jumps the first line.
In a possible design, described device further include: PT break module, for judge first line PT broken string be
No establishment；Line-to-ground direction spacing module, for judging whether first line ground connection direction distancing element acts；Bus is comprehensive
Back-up protection module jumps the first line for executing the comprehensive back-up protection movement of bus.
In a possible design, described device further include: PT breaks module, for judging that main transformer backup protection jumps the
Whether one mother or main transformer backup protection jump the second mother true；Alternate direction spacing module, for judging that first line is alternate
Whether direction distancing element acts；Bus integrates back-up protection module, for executing described in the comprehensive back-up protection movement jump of bus
First line.
In a possible design, described device further include: the first result judgement module, if being used for main transformer backup protection
Jump that the first mother is invalid and main transformer backup protection to jump the second mother invalid, then jumped without the comprehensive back-up protection movement of bus
First line.
In a possible design, described device further include: the second result judgement module, if being used for first line zero sequence
Overcurrent element movement, and if the zero sequence positive direction element of first line be failure to actuate and PT breaks, without the comprehensive standby of bus
Protection act jumps first line.
The embodiment of the present application provides a kind of comprehensive back-up protection method of bus and device comprising: judge main transformer standby
The first mother is jumped in protection or whether the second mother of main transformer backup protection jump is true；If so, then judge the zero sequence mistake of first line
Whether fluid element acts；If movement, judge whether the zero sequence positive direction element of the first line acts or the First Line
Whether the PT on road breaks；If if the zero sequence positive direction element movement or PT of the first line break, after executing bus synthesis
Standby protection act jumps the first line.The embodiment of the present application can successively carry out jump the first mother or jump the second mother whether at
It is vertical, whether zero sequence overcurrent element acts, whether zero sequence positive direction element acts or route whether the judgement of PT broken string, and full
When the above-mentioned full terms of foot, then this route of tripping, to realize quickly isolating for failure.
Above objects, features, and advantages to enable the embodiment of the present application to be realized are clearer and more comprehensible, be cited below particularly compared with
Good embodiment, and cooperate appended attached drawing, it is described in detail below.
Detailed description of the invention
Illustrate the technical solutions in the embodiments of the present application or in the prior art in order to clearer, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the comprehensive back-up protection method flow chart of bus for the offer that the application first embodiment provides；
Fig. 2 is the comprehensive back-up protection method flow chart of bus for the offer that the application first embodiment provides；
Fig. 3 is the comprehensive back-up protection method flow chart of bus for the offer that the application first embodiment provides；
Fig. 4 is the comprehensive back-up protection method flow chart of bus for the offer that the application first embodiment provides；
Fig. 5 is the comprehensive back-up protection method flow chart of bus for the offer that the application first embodiment provides；
Fig. 6 is the structural block diagram for the bus Integrate Backup Protective Equipment that the application second embodiment provides.
Fig. 7 is the typical wiring signal for the 220KV substation 110KV loop-net operation system that the application first embodiment provides
Figure；
Fig. 8 is the comprehensive back-up protection logic chart of bus that the application first embodiment provides.
Specific embodiment
First embodiment
Referring to Figure 1, Fig. 1 is the comprehensive back-up protection method process of the bus provided that the application first embodiment provides
Figure；
Step S110 judges that main transformer backup protection jumps the first mother or whether the second mother of main transformer backup protection jump is true；
If so, then carry out step S120.
It is to guarantee the normal operation of non-failure point that mother is jumped in standby delay, and transformer unit differential range internal fault, main protection is not
It is dynamic, then it is delayed by back-up protection and jumps mother, in order to avoid influence the operation of other units.In some design protections, install additional
Mother quick-break jumps mother without delay, reduces fault point to the greatest extent to the shadow of other equipment as long as there is short circuit current to flow through mother
It rings, to reduce coverage.If the first mother or the second mother are set up, proves that the route breaks down, therefore need into one
Step investigation.
Main transformer backup protection jumps the first mother or mother I and II mother in main transformer backup protection the second mother corresponding diagram 7 of jump.
Step S120, judges whether the zero sequence overcurrent element of first line acts；If movement carries out step S130 and step
Rapid S140.
Zero sequence overcurrent element plays the role of zero-sequence current protection.
Step S130, judges whether the zero sequence positive direction element of the first line acts, if so, thening follow the steps
S200。
Zero sequence positive direction element is to install directional element additional on zero-sequence current protection, constitutes the element of zero-sequence voltage injection.
Its action behavior is when fault current flows to route by bus, and protection just acts, otherwise protection is failure to actuate.Action behavior is disconnected
Open the route of fault current.
Step S140, judges whether the PT of the first line breaks；If so, thening follow the steps S200.
PT is the English symbol of voltage transformer, and PT broken string most importantly its protection fuse is blown.Reason is mainly
Caused by secondary side overload, insulation decline or short circuit.
The first line is jumped in step S200, the comprehensive back-up protection movement of bus.
By a series of this step, to solve under loop-net operation mode because substance line protective devices tripping causes
The overstepping of main transformer backup protection non-selectivity, so as to cause multistation decompression the problem of, control scope of power outage, ensured power grid
Safe and stable operation.
Fig. 2 is referred to, Fig. 2 is the part for the comprehensive back-up protection method of the bus provided that the application first embodiment provides
Flow chart；
Step S140 judges whether first line PT broken string is true；The establishment if first line PT does not break, carries out step
S150。
PT is the English symbol of voltage transformer, and PT broken string most importantly its protection fuse is blown.Reason is mainly
Caused by secondary side overload, insulation decline or short circuit.
Step S150, judges whether first line ground connection direction distancing element acts, if movement, thens follow the steps S200.
Ground connection direction distancing element plays the role of ground distance protection, protection installation when specifically reacting ground short circuit
The measurement impedance in place to fault point equivalent distances and its direction, and when measurement impedance be less than predetermined adjusting impedance value and trip after
Electric defensive measure.
Fig. 3 is referred to, Fig. 3 is the comprehensive back-up protection method process of the bus provided that the application first embodiment provides
Figure；
Step S141 carries out step S160 if first line PT broken string is invalid.
PT is the English symbol of voltage transformer, and PT broken string most importantly its protection fuse is blown.Reason is mainly
Caused by secondary side overload, insulation decline or short circuit.
Step S160, judges whether the alternate direction distancing element of first line acts, if movement, thens follow the steps S200.
Alternate direction distancing element plays the role of phase distance protection, specifically protection circuit or element phase fault
Protection, generally divide three-stage.Protection scope: this route or element and the standby for doing next stage.
To realize quickly isolating for failure.
Fig. 4 is referred to, Fig. 4 is the comprehensive back-up protection method process of the bus provided that the application first embodiment provides
Figure；
Step S111, judge main transformer backup protection jump the first mother and main transformer backup protection jump the second mother whether not at
It is vertical, if all invalid, carry out step S210.
It is to guarantee the normal operation of non-failure point that mother is jumped in standby delay, and drum barrier in transformer unit differential range, main protection is not
It is dynamic, then it is delayed by back-up protection and jumps mother, in order to avoid influence the operation of other units.In some design protections, install additional
Mother quick-break jumps mother without delay, reduces fault point to the greatest extent to the shadow of other equipment as long as there is short circuit current to flow through mother
It rings, to reduce coverage.
Step S210 jumps first line without the comprehensive back-up protection movement of bus.
Main transformer backup protection jumps the first mother and the second mother of main transformer backup protection jump is all invalid, shows this route not
It was found that failure, therefore do not need to carry out the comprehensive back-up protection movement jump first line of bus.
Fig. 5 is referred to, Fig. 5 is the comprehensive back-up protection method process of the bus provided that the application first embodiment provides
Figure；
Step S121, judges whether first line zero sequence overcurrent element acts, if so, executing step S131.
Whether the zero sequence positive direction element of step S131, first line are failure to actuate and whether PT does not break, if so, carrying out
Step S210.
When each element is all failure to actuate, route fault-free where illustrating, to prove that this route does not find failure.
The present embodiment can acquire two busbar voltages and each line segregation electric current respectively；Two main transformers are acquired respectively
The contact of busbar breaker is jumped in back-up protection movement；Busbar breaker is jumped when main transformer backup protection acts, while route is determined as
Positive direction failure, then this route of tripping, realizes quickly isolating for failure.The present invention is prevented by the comprehensive back-up protection logic of bus
Only because of main transformer backup protection non-selectivity overstepping caused by substance line protective devices tripping, so as to cause multistation decompression
The problem of.
Second embodiment
The structural block diagram that Fig. 6 Fig. 6 is the bus Integrate Backup Protective Equipment that the application second embodiment provides is referred to,
The device 300, comprising:
Contact judgment module 310, for judging that main transformer backup protection jumps the first mother or main transformer backup protection jumps the second mother
Whether true join；
Zero-sequence current protection module 320, for judging whether the zero sequence overcurrent element of first line acts；
Zero sequence positive direction module 330, for judging whether the zero sequence positive direction element of first line acts；
PT breaking protection module 340, for judging whether the PT broken string module of the first line breaks；
It is grounded direction spacing module 350, for judging whether the first line ground connection direction distancing element is true；
Alternate direction spacing module 360, for judging whether the alternate direction distancing element of the first line is true；
Bus integrates back-up protection module 370, jumps the first line for executing the comprehensive back-up protection movement of bus.
Fig. 7 is referred to, Fig. 7 shows the 220KV substation 110KV loop-net operation system of the application first embodiment offer
Typical wiring schematic diagram, specifically comprise the following steps:
In embodiments of the present invention, for the present invention with the side the 110kV loop-net operation of 220kV substation A, the station opposite side B, the station C are equal
For the canonical system wiring of load station, implementation steps are as follows:
Bus Integrate Backup Protective Equipment is configured by object of a certain voltage class bus of substation's high and low pressure:
As shown in fig. 7, configuring the comprehensive back-up protection dress of a bus for the 110kV bus of single mother partition mode of connection
It sets.
Two busbar voltages and each line segregation electric current are acquired respectively.
Bus Integrate Backup Protective Equipment acquires the three-phase voltage and AB line of mother I and II mother, AC I line, AC II line
Three-phase current.
The contact of busbar breaker is jumped in the back-up protection movement for acquiring two main transformers respectively.
Bus Integrate Backup Protective Equipment acquires standby phase overcurrent and the zero-sequence over-current protection movement 1 of #1 main transformer and #2 main transformer
Time limit jumps the contact of busbar breaker, is respectively connected to " main transformer backup protection jumps the first mother ", " main transformer backup protection jump second
Mother " is opened into any one, which is opened, after stabilization can start the comprehensive back-up protection logic of bus into contact movement.
Busbar breaker is jumped when main transformer backup protection acts, while route is determined as positive direction failure, then this route of tripping,
Realize the isolation of failure.
As shown in fig. 7, when the AB outlet of I mother is broken down, and the line protective devices that its substanceization configures because of device therefore
When the reasons tripping such as barrier, principle mismatch, fixed value adjusting mistake, the standby phase overcurrent or zero-sequence over-current protection of #1 main transformer and 2# main transformer
Will overstepping, 1 time limit movement jump busbar breaker CB3, after busbar breaker CB3 tripping, #1 main transformer continues to experience
Failure, 2 time limits tripping CB1 breaker (2 time limits usually compared for 1 time limit late 0.3 or 0.5 second) are protected if being not provided with the comprehensive standby of bus
Protect logic, #2 main transformer also will continue to experience failure by the stand looped network of mother CB4 formation of AC I line, AC II line and C, when 2
Limit jumps tripping CB2 breaker, so as to cause the station the B of our station 110kV system and opposite side, the equal decompression in the station C.
Fig. 8 is referred to, Fig. 8 shows the comprehensive back-up protection logic chart of bus of the application first embodiment offer, specifically
Include the following steps:
After being configured with the comprehensive back-up protection logic of bus, as shown in figure 8, X represents AB in embodiment, " main transformer backup protection
Jump the first mother ", " main transformer backup protection jump the second mother " open the comprehensive back-up protection logic of action launching bus into contact, this
When according to the mother's I three-phase voltage and AB line three-phase current of acquisition calculate zero sequence direction overcurrent element, direction distancing element, if therefore
Barrier type is ground fault, then zero sequence direction overcurrent element and/or the movement of direction distancing element, if fault type is that two-phase does not connect
Ground or three-phase fault, then direction distancing element acts, tripping AB line breaker CB7, to realize quickly isolating for failure.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through it
Its mode is realized.The apparatus embodiments described above are merely exemplary, for example, the flow chart and block diagram in attached drawing are aobvious
The device of multiple embodiments according to the application, architectural framework in the cards, the function of method and computer program product are shown
It can and operate.In this regard, each box in flowchart or block diagram can represent one of a module, section or code
Point, a part of the module, section or code includes one or more for implementing the specified logical function executable
Instruction.It should also be noted that function marked in the box can also be attached to be different from some implementations as replacement
The sequence marked in figure occurs.For example, two continuous boxes can actually be basically executed in parallel, they sometimes may be used
To execute in the opposite order, this depends on the function involved.It is also noted that each of block diagram and or flow chart
The combination of box in box and block diagram and or flow chart can be based on the defined function of execution or the dedicated of movement
The system of hardware is realized, or can be realized using a combination of dedicated hardware and computer instructions.
In addition, each functional module in each embodiment of the application can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of the steps.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.It needs
Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with
Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities
The relationship or sequence on border.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of comprehensive back-up protection method of bus, which is characterized in that the described method includes:
Judge that main transformer backup protection jumps the first mother or whether the second mother of main transformer backup protection jump is true；
If so, then become the zero sequence of the first line in the circuit system where back-up protection, the first mother and the second mother
Whether overcurrent element acts, and the first line is any route in the system；；
If movement, judge whether the zero sequence positive direction element of the first line acts or the mutual induction of voltage of the first line
Whether device PT breaks；
If executing the comprehensive back-up protection movement of bus if the zero sequence positive direction element movement or PT of the first line break and jumping
The first line.
2. the comprehensive back-up protection method of a kind of bus according to claim 1, which is characterized in that the method also includes:
If the zero sequence overcurrent element of first line is not operating, judge whether first line PT broken string is true；
If first line PT broken string is invalid, judge whether first line ground connection direction distancing element acts；
If movement, executes the comprehensive back-up protection movement of bus and jump the first line.
3. the comprehensive back-up protection method of a kind of bus according to claim 2, which is characterized in that the method also includes:
If the zero sequence overcurrent element of first line is not operating, judge whether first line PT broken string is true；
If first line PT broken string is invalid, judge whether the alternate direction distancing element of first line acts；
If movement, executes the comprehensive back-up protection movement of bus and jump the first line.
4. the comprehensive back-up protection method of a kind of bus according to claim 3, which is characterized in that the method also includes:
If main transformer backup protection is jumped, the first mother is invalid and the second mother of main transformer backup protection jump is invalid, without bus
First line is jumped in comprehensive back-up protection movement.
5. the comprehensive back-up protection method of a kind of bus according to claim 4, which is characterized in that the method also includes:
If first line zero sequence overcurrent element act, and if first line zero sequence positive direction element be failure to actuate and PT break,
First line is jumped without the comprehensive back-up protection movement of bus.
6. a kind of bus Integrate Backup Protective Equipment, which is characterized in that described device includes:
Contact judgment module, for judge main transformer backup protection jump the first mother or main transformer backup protection jump the second mother whether at
It is vertical；
Zero-sequence current protection module, for judging that the zero sequence of first line crosses whether flow module acts；
Breaking protection module, for judging whether the zero sequence positive direction module of the first line acts or the first line
Whether PT broken string module breaks；
Bus integrates back-up protection module, jumps the first line for executing the comprehensive back-up protection movement of bus.
7. a kind of bus Integrate Backup Protective Equipment according to claim 6, which is characterized in that described device further include:
PT broken string module, for judging whether first line PT broken string is true；
Line-to-ground direction spacing module, for judging whether first line ground connection direction distancing element acts；
Bus integrates back-up protection module, jumps the first line for executing the comprehensive back-up protection movement of bus.
8. a kind of bus Integrate Backup Protective Equipment according to claim 7, which is characterized in that described device further include:
PT breaks module, for judge main transformer backup protection jump the first mother or main transformer backup protection jump the second mother whether at
It is vertical；
Alternate direction spacing module, for judging whether the alternate direction distancing element of first line acts；
Bus integrates back-up protection module, jumps the first line for executing the comprehensive back-up protection movement of bus.
9. a kind of bus Integrate Backup Protective Equipment according to claim 8, which is characterized in that described device further include:
First result judgement module, if jumping for main transformer backup protection, the first mother is invalid and main transformer backup protection jumps the second mother
Join invalid, then jumps first line without the comprehensive back-up protection movement of bus.
10. a kind of bus Integrate Backup Protective Equipment according to claim 9, which is characterized in that described device further include:
Second result judgement module, if for first line zero sequence overcurrent element act, and if first line zero sequence positive direction
Element is failure to actuate and PT breaks, then jumps first line without the comprehensive back-up protection movement of bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177586.3A CN109149528B (en) | 2018-10-10 | 2018-10-10 | A kind of comprehensive back-up protection method of bus and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177586.3A CN109149528B (en) | 2018-10-10 | 2018-10-10 | A kind of comprehensive back-up protection method of bus and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109149528A true CN109149528A (en) | 2019-01-04 |
| CN109149528B CN109149528B (en) | 2019-11-19 |
Family
ID=64810900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811177586.3A Active CN109149528B (en) | 2018-10-10 | 2018-10-10 | A kind of comprehensive back-up protection method of bus and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109149528B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | Improve the protective device of station service power supply reliability |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007318951A (en) * | 2006-05-29 | 2007-12-06 | Chugoku Electric Power Co Inc:The | Bus protection relay system with comprehensive backup protection function |
| CN102570426A (en) * | 2012-02-17 | 2012-07-11 | 黑龙江省电力有限公司 | Method for realizing back-up protection in wide area protection by using differential protection |
| CN202840494U (en) * | 2012-10-30 | 2013-03-27 | 成都交大许继电气有限责任公司 | Transformer high-voltage side backup protection and monitoring device for railway power substation |
| CN103580006A (en) * | 2012-07-19 | 2014-02-12 | 宝钢不锈钢有限公司 | CT broken line discrimination method during bus protection |
| CN107317308A (en) * | 2017-07-28 | 2017-11-03 | 国网江苏省电力公司镇江供电公司 | The adaptive locking prepared auto restart guard method of sectionalized single busbar connection 110kV bus differential protections |
| CN108199484A (en) * | 2018-02-09 | 2018-06-22 | 广东电网有限责任公司揭阳供电局 | A kind of quick off-the-line method and device of looped network |
-
2018
- 2018-10-10 CN CN201811177586.3A patent/CN109149528B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007318951A (en) * | 2006-05-29 | 2007-12-06 | Chugoku Electric Power Co Inc:The | Bus protection relay system with comprehensive backup protection function |
| CN102570426A (en) * | 2012-02-17 | 2012-07-11 | 黑龙江省电力有限公司 | Method for realizing back-up protection in wide area protection by using differential protection |
| CN103580006A (en) * | 2012-07-19 | 2014-02-12 | 宝钢不锈钢有限公司 | CT broken line discrimination method during bus protection |
| CN202840494U (en) * | 2012-10-30 | 2013-03-27 | 成都交大许继电气有限责任公司 | Transformer high-voltage side backup protection and monitoring device for railway power substation |
| CN107317308A (en) * | 2017-07-28 | 2017-11-03 | 国网江苏省电力公司镇江供电公司 | The adaptive locking prepared auto restart guard method of sectionalized single busbar connection 110kV bus differential protections |
| CN108199484A (en) * | 2018-02-09 | 2018-06-22 | 广东电网有限责任公司揭阳供电局 | A kind of quick off-the-line method and device of looped network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | Improve the protective device of station service power supply reliability |
| CN110364996B (en) * | 2019-07-24 | 2021-08-20 | 国家电网有限公司 | Protection device for improving service power supply reliability |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109149528B (en) | 2019-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Memon et al. | A critical review of AC Microgrid protection issues and available solutions | |
| Mirsaeidi et al. | Towards hybrid AC/DC microgrids: Critical analysis and classification of protection strategies | |
| Mirsaeidi et al. | An analytical literature review of the available techniques for the protection of micro-grids | |
| Mirsaeidi et al. | Progress and problems in micro-grid protection schemes | |
| Mirsaeidi et al. | A protection strategy for micro‐grids based on positive‐sequence component | |
| Zamani et al. | A protection strategy and microprocessor-based relay for low-voltage microgrids | |
| Zamani et al. | A communication-assisted protection strategy for inverter-based medium-voltage microgrids | |
| Lin et al. | A selective single-phase-to-ground fault protection for neutral un-effectively grounded systems | |
| Zamani et al. | A communication-based strategy for protection of microgrids with looped configuration | |
| CN110912093B (en) | Disconnection relay protection method for measuring matching of load side bus line voltage and spare power automatic switching | |
| CN111313379B (en) | Disconnection protection method for comparing line voltage on two sides of line and spare power automatic switching | |
| Sarwagya et al. | An extensive review on the state-of-art on microgrid protection | |
| Mirsaeidi et al. | Modeling and simulation of a communication-assisted digital protection scheme for micro-grids | |
| CN109149528B (en) | A kind of comprehensive back-up protection method of bus and device | |
| Zhang et al. | A segmented network method based faulted line selection strategy for single-phase earth fault in small current grounding distribution network | |
| CN106786368B (en) | The guard method of dry type hollow shunt reactor based on voltage-phase variable quantity | |
| Gao et al. | Principle and implementation of substation-area backup protection for digital substation | |
| Moreno et al. | Security schemes of power systems against blackouts | |
| Ballal et al. | Methodology for the improvements in synchrophasor based System Integrity Protection Schemes under stressed conditions | |
| CN105186464B (en) | One kind 3/2 switchs main electrical scheme breaker fail protection method | |
| CN111224384B (en) | Method for comparing line voltage vector difference on two sides of line and protecting line breakage by adopting loop closing and opening operation | |
| CN105978017B (en) | There is the method for detecting and protecting isolated island of anti-jump function for large-scale wind power | |
| CN204947582U (en) | Loop is distributed in the jumping of 220kV failure protection connection rationally | |
| CN102332708A (en) | Relay protection method in distribution system | |
| Ameli et al. | Vulnerabilities of line current differential relays to cyber-attacks |
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 |