CN108681822A - Wide area protection starts and the reliability estimation method and device of fault zone positioning - Google Patents
Wide area protection starts and the reliability estimation method and device of fault zone positioning Download PDFInfo
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- CN108681822A CN108681822A CN201810497366.2A CN201810497366A CN108681822A CN 108681822 A CN108681822 A CN 108681822A CN 201810497366 A CN201810497366 A CN 201810497366A CN 108681822 A CN108681822 A CN 108681822A
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Abstract
Start the present invention provides a kind of wide area protection and the reliability estimation method and device of fault zone positioning, wherein method include：S1, the information receptance d for obtaining wide area monitoring center in Wide area protection system；S2, the theoretical quantity that each substation in regional power grid is uploaded to the busbar sequence voltage information at wide area monitoring center is obtained；S3, the busbar sequence voltage set that each substation uploads in the regional power grid that wide area monitoring center receives is obtained；S4, setting valve is started according to the preset busbar sequence voltage in wide area monitoring center, it determines and is less than the set that preset busbar sequence voltage starts the suspected malfunctions busbar of setting valve in the busbar sequence voltage set that wide area monitoring center receives, and count the quantity of suspected malfunctions busbar；Each substation is uploaded to the quantity of the theoretical quantity and suspected malfunctions busbar of the busbar sequence voltage information at wide area monitoring center in S5, combining information receptance d, regional power grid, calculates the accuracy that wide area protection starts.
Description
Technical field
Start the present invention relates to technical field of relay protection more particularly to a kind of wide area protection and fault zone positioning can
By property appraisal procedure and device.
Background technology
With electricity needs rapid growth, the transmission and distribution network increasingly extended makes power system network framework more sophisticated,
The method of operation is further flexible, causes relay protection setting also further difficult, or even be difficult to coordinate, local information amount is based on by tradition
Protective relaying device the massive blackout accident that is caused of incorrect operation it is commonplace.To improve relay protection system
The concept of performance, Wide area protection system is come into being.In recent years, fast with wide-area communication network technology and intelligent electronic device
Speed development, the realization of Wide area protection system have been saved up strength to start out.
However, being different from traditional station domain relay protection system, Wide area protection system is constructed above information network,
The correctness of fault element is recognized and cuts off, the too busy to get away wide area electric information amount for being distributed in diverse geographic location is uploaded to monitoring
The validity at center.In short, Wide area protection system has stronger dependence to Wide-area Measurement Information stream, it is clear that be an information object
Manage coupled system.Therefore, how Reliability modeling is carried out with regard to such novel system and has been parsed into instantly that there is an urgent need for study.
The prior art exist only simply analyze protection system in various kinds of equipment formed topology whether unicom, do not have
The technical issues of strong dependency of the Wide area protection system to wide-area communication network and its communication quality can be embodied.
Invention content
The present invention provides the reliability estimation methods and device of a kind of startup of wide area protection and fault zone positioning, solve
The prior art exist only simply analyze various kinds of equipment is formed in protection system topology whether unicom, could not reach body
The technical issues of revealing strong dependency of the Wide area protection system to wide-area communication network and its communication quality.
In view of this, the application first aspect provides, a kind of wide area protection starts and the reliability of fault zone positioning is commented
Estimate method, including：
S1, the information receptance d for obtaining wide area monitoring center in Wide area protection system；
S2, the theoretical quantity that each substation in regional power grid is uploaded to the busbar sequence voltage information at wide area monitoring center is obtained；
S3, the busbar sequence voltage set that each substation uploads in the regional power grid that wide area monitoring center receives is obtained；
S4, setting valve is started according to the preset busbar sequence voltage in wide area monitoring center, determines that wide area monitoring center receives
To busbar sequence voltage set in be less than preset busbar sequence voltage start setting valve suspected malfunctions busbar set, and count doubt
Like the quantity of fault bus；
Each substation is uploaded to the busbar sequence voltage information at wide area monitoring center in S5, combining information receptance d, regional power grid
Theoretical quantity and suspected malfunctions busbar quantity, calculate wide area protection start accuracy.
Optionally, further include after step S4：
S6, using the set of suspected malfunctions busbar and the element being connect with the outlet of suspected malfunctions busbar as fault zone
Λ；
S7, determine that the busbar sequence voltage in the Λ of fault zone corresponding at least one port of each element is less than preset mother
The possibility magnitude-set of line sequence voltage starting setting valve；
Each substation is uploaded to the busbar sequence voltage information at wide area monitoring center in S8, combining information receptance d, regional power grid
Theoretical quantity and fault zone Λ in busbar sequence voltage corresponding to each at least one port of element be less than preset busbar
Sequence voltage starts the possibility magnitude-set of setting valve, calculates the accuracy of fault zone positioning.
Optionally, step S5 is specifically included：
Pass through the first preset formulaCalculate the accuracy that wide area protection starts；
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；Υ is the quantity of suspected malfunctions busbar.
Optionally, step S8 is specifically included：
Pass through the second preset formulaCalculate the accuracy of fault zone positioning；
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；Busbar sequence voltage in α ∈ { 1,2 } fault zone Λ corresponding to each at least one port of element is small
Start the possibility magnitude-set of setting valve in preset busbar sequence voltage.
The application second aspect provides a kind of reliability assessment device of wide area protection startup and fault zone positioning, packet
It includes：
First acquisition unit, the information receptance d for obtaining wide area monitoring center in Wide area protection system；Second obtains
Unit, the theoretical quantity for being uploaded to the busbar sequence voltage information at wide area monitoring center for obtaining each substation in regional power grid；
Third acquiring unit, for obtaining the busbar sequence that each substation uploads in the regional power grid that wide area monitoring center receives
Voltage set；
First determination unit determines wide for starting setting valve according to the preset busbar sequence voltage in wide area monitoring center
It is less than the suspected malfunctions busbar that preset busbar sequence voltage starts setting valve in the busbar sequence voltage set that domain monitoring center receives
Set, and count the quantity of suspected malfunctions busbar；
First assessment unit is uploaded to wide area monitoring center for each substation in combining information receptance d, regional power grid
The quantity of the theoretical quantity and suspected malfunctions busbar of busbar sequence voltage information calculates the accuracy that wide area protection starts.
Optionally, further include：
Fault zone positioning unit, for what is connect by the set of suspected malfunctions busbar and with the outlet of suspected malfunctions busbar
Element is as fault zone Λ；
Second determination unit, for determining the busbar sequence in the Λ of fault zone corresponding at least one port of each element
Voltage is less than the possibility magnitude-set that preset busbar sequence voltage starts setting valve；
Second assessment unit is uploaded to wide area monitoring center for each substation in combining information receptance d, regional power grid
Busbar sequence electricity in the theoretical quantity and fault zone Λ of busbar sequence voltage information corresponding to each at least one port of element
Pressure is less than the possibility magnitude-set that preset busbar sequence voltage starts setting valve, calculates the accuracy of fault zone positioning.
Optionally, the first assessment unit,
It is additionally operable to through the first preset formulaCalculate the correct of wide area protection startup
Rate；
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；γ is the quantity of suspected malfunctions busbar.
Optionally, the second assessment unit,
It is additionally operable to through the second preset formulaCalculate the correct of fault zone positioning
Rate；
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；Busbar sequence voltage in α ∈ { 1,2 } fault zone Λ corresponding to each at least one port of element is small
Start the possibility magnitude-set of setting valve in preset busbar sequence voltage.
As can be seen from the above technical solutions, the present invention has the following advantages：
The present invention provides a kind of wide area protections to start the reliability estimation method with fault zone positioning, including：S1, it obtains
Take the information receptance d at wide area monitoring center in Wide area protection system；Each substation is uploaded to wide area prison in S2, acquisition regional power grid
The theoretical quantity of the busbar sequence voltage information at control center；S3, each substation in the regional power grid that wide area monitoring center receives is obtained
The busbar sequence voltage set of upload；S4, setting valve is started according to the preset busbar sequence voltage in wide area monitoring center, determines wide area
It is less than the suspected malfunctions busbar of preset busbar sequence voltage startup setting valve in the busbar sequence voltage set that monitoring center receives
Set, and count the quantity of suspected malfunctions busbar；Each substation is uploaded to wide area prison in S5, combining information receptance d, regional power grid
The quantity of the theoretical quantity and suspected malfunctions busbar of the busbar sequence voltage information at control center calculates the correct of wide area protection startup
Rate.
The present invention reflects the fluctuation of wide area communications sytem network performance by the information receptance d at wide area monitoring center
Property, and the feelings of the actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received by wide area monitoring center
Under condition, the reliability of wide area protection startup is identified in a manner of randomization, it is simply to divide to solve the prior art to exist
Analysis protection system in various kinds of equipment formed topology whether unicom, could not enough embody Wide area protection system to WAN communication network
The technical issues of strong dependency of network and its communication quality.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is one of the reliability estimation method that a kind of wide area protection provided by the invention starts and fault zone positions
The flow diagram of embodiment；
Fig. 2 is the another of the reliability estimation method that a kind of wide area protection provided by the invention starts and fault zone positions
The flow diagram of a embodiment；
Fig. 3 is one of the reliability assessment device that a kind of wide area protection provided by the invention starts and fault zone positions
The structural schematic diagram of embodiment；
Fig. 4 is the another of the reliability assessment device that a kind of wide area protection provided by the invention starts and fault zone positions
The structural schematic diagram of a embodiment；
Fig. 5 is the information receptance of the wide area communications sytem under different scenes.
Specific implementation mode
An embodiment of the present invention provides the reliability estimation methods and dress of a kind of startup of wide area protection and fault zone positioning
Set, solve the prior art exist only simply analyze protection system in various kinds of equipment formed topology whether unicom,
The technical issues of strong dependency of the Wide area protection system to wide-area communication network and its communication quality could not enough be embodied.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Range.
Referring to Fig. 1, the present invention provides a kind of wide area protections to start the reliability estimation method with fault zone positioning
One embodiment, including：
101, the information receptance d at wide area monitoring center in Wide area protection system is obtained；
102, the theoretical quantity that each substation in regional power grid is uploaded to the busbar sequence voltage information at wide area monitoring center is obtained；
103, the busbar sequence voltage set that each substation uploads in the regional power grid that wide area monitoring center receives is obtained；
104, setting valve is started according to the preset busbar sequence voltage in wide area monitoring center, determines that wide area monitoring center receives
To busbar sequence voltage set in be less than preset busbar sequence voltage start setting valve suspected malfunctions busbar set, and count doubt
Like the quantity of fault bus；
105, in combining information receptance d, regional power grid each substation be uploaded to wide area monitoring center busbar sequence voltage letter
The quantity of the theoretical quantity and suspected malfunctions busbar of breath calculates the accuracy that wide area protection starts.
The embodiment of the present invention reflects wide area communications sytem network performance by the information receptance d at wide area monitoring center
Fluctuation, and the actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received by wide area monitoring center
In the case of, the reliability of wide area protection startup is identified in a manner of randomization, solves the prior art and exists only simply
The topology that various kinds of equipment is formed in ground analysis protection system whether unicom, it is logical to wide area could not enough to embody Wide area protection system
The technical issues of strong dependency of communication network and its communication quality.
It is to a kind of reliability estimation method of wide area protection startup and fault zone positioning provided by the invention above
The explanation that one embodiment carries out, below by a kind of wide area protection provided by the invention is started and fault zone positioning it is reliable
Another embodiment of property appraisal procedure illustrates.
Referring to Fig. 2, the present invention provides a kind of wide area protections to start the reliability estimation method with fault zone positioning
Another embodiment, including：
201, the information receptance d at wide area monitoring center in Wide area protection system is obtained；
202, the theoretical quantity that each substation in regional power grid is uploaded to the busbar sequence voltage information at wide area monitoring center is obtained；
203, the busbar sequence voltage set that each substation uploads in the regional power grid that wide area monitoring center receives is obtained；
204, setting valve is started according to the preset busbar sequence voltage in wide area monitoring center, determines that wide area monitoring center receives
To busbar sequence voltage set in be less than preset busbar sequence voltage start setting valve suspected malfunctions busbar set, and count doubt
Like the quantity of fault bus；
205, in combining information receptance d, regional power grid each substation be uploaded to wide area monitoring center busbar sequence voltage letter
The quantity of the theoretical quantity and suspected malfunctions busbar of breath calculates the accuracy that wide area protection starts；
It specifically includes：
Pass through the first preset formulaCalculate the accuracy that wide area protection starts；
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；γ is the quantity of suspected malfunctions busbar；
It should be noted that when transmission line of electricity breaks down, sequence voltage has significant characteristic distributions.Closer to failure
The positive sequence voltage of point, each busbar is smaller, and negative phase-sequence and residual voltage are then bigger.According to this feature, as long as wide area monitoring center will connect
Each busbar sequence voltage received is compared with startup preset value and would know that current regional power grid with the presence or absence of failure, and with
This criterion started as wide area protection.However, due to the finiteness and economy of wide area communications sytem bandwidth, each substation cannot
The voltage of three sequences is uploaded to monitoring center in real time.Based on this, it is contemplated that negative sequence component can not react the short of three-phase symmetrical
Road failure, zero-sequence component can only react ground short circuit failure, and positive-sequence component be due to that can react all kinds of short trouble types, can
Startup reference quantity as wide area protection.
If the original busbar sequence voltage collection that each substation uploads in regional power grid is combined intoWide area monitoring
The busbar sequence voltage collection that center actually receives is combined intoThe preset startup setting valve at wide area monitoring center is Uset, then protect
Shield starts decision function：
System is under desired operation, and the positive sequence voltage of the nearest busbar of distance fault point is minimum, but in actual motion
Because of factors such as system concussion, power flow transfer, measurement errors, even if single failure may occur, it can also cause 1 or more busbar
Voltage meets entry condition.FunctionIt shows and waits when an error occurs, no matterIn how many node busbar sequence
Voltage meets entry condition, as long as setAt least there is a busbar sequence voltage in as soon as and is less than preset startup setting valve, protection
It can start.Accordingly, when wide area communications sytem is in state Y, in the case that information acceptance rate is d, wide area protection can correctly start
Probability be：
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；γ is the quantity of suspected malfunctions busbar.
Further include after step 204：
206, using the set of suspected malfunctions busbar and the element being connect with the outlet of suspected malfunctions busbar as fault zone
Λ；
207, it is preset to determine that the busbar sequence voltage in the Λ of fault zone corresponding at least one port of each element is less than
Busbar sequence voltage starts the possibility magnitude-set of setting valve；
208, in combining information receptance d, regional power grid each substation be uploaded to wide area monitoring center busbar sequence voltage letter
Busbar sequence voltage in the theoretical quantity and fault zone Λ of breath corresponding to each at least one port of element is less than preset mother
The possibility magnitude-set of line sequence voltage starting setting valve calculates the accuracy of fault zone positioning；
It specifically includes：
Pass through the second preset formulaCalculate the accuracy of fault zone positioning；
In formula,The busbar sequence voltage letter at wide area monitoring center is uploaded to for each substation in regional power grid
The theoretical quantity of breath；δ is information redundance；Symbol card (g) is used for the radix of description collections；For in wide area monitoring
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid that the heart receives, hasAnd S ∝ d, symbolFor downward bracket function；Busbar sequence electricity in α ∈ { 1,2 } fault zone Λ corresponding to each at least one port of element
Pressure is less than the possibility magnitude-set that preset busbar sequence voltage starts setting valve；
It should be noted that after protection starts successfully, in order to reduce the search range of failure, certain rule can be passed through
Preferentially determine a smaller fault zone, then on this basis, all directional element information in the selective analysis region with
Determine specific fault element in the region.Present invention provide that busbar i and its all outlets constitute a unit area Λ i.
Essence is consistent used by fault zone mapping function and protection start decision function, once find the sequence of certain busbar
It is a trouble unit section that voltage is considered as the bus-bar area less than preset startup setting valve.Accordingly, we can provide event
Hinder zone location function：
In formula For the transmission line of electricity set in fault zone,For busbar set in fault zone,
And the busbar sequence voltage in fault zone is satisfied by | Ui|≤Uset；
The failure of uniline, it is also possible to cause 1 or more busbar voltage and meet entry condition.In information acceptance rate
Under the premise of for d, due to that there are the possibility that sequence voltage information is lost, can not ensure that fault element is just necessarily present in by faulty section
In the region Λ that domain mapping function is positioned, i.e., fault location process be have it is probabilistic.In the premise that protection starts
Under, fault zone correct localization is：
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；Busbar sequence voltage in α ∈ { 1,2 } fault zone Λ corresponding to each at least one port of element is small
Start the possibility magnitude-set of setting valve in preset busbar sequence voltage.Above formula indicates only to work as the mother associated by fault element both ends
Line sequence information of voltage at least ensure there are one can the center of being monitored receive, fault zone position could succeed.
It is to a kind of reliability estimation method of wide area protection startup and fault zone positioning provided by the invention above
The explanation that another embodiment carries out, below by a kind of wide area protection provided by the invention is started and fault zone positioning can
One embodiment by property apparatus for evaluating illustrates.
Referring to Fig. 3, the present invention provides a kind of wide area protections to start the reliability assessment device with fault zone positioning
One embodiment, including：
First acquisition unit 301, the information receptance d for obtaining wide area monitoring center in Wide area protection system；
Second acquisition unit 302 is uploaded to the busbar sequence electricity at wide area monitoring center for obtaining each substation in regional power grid
Press the theoretical quantity of information；
Third acquiring unit 303, for obtaining the mother that each substation uploads in the regional power grid that wide area monitoring center receives
Line sequence voltage set；
First determination unit 304 is determined for starting setting valve according to the preset busbar sequence voltage in wide area monitoring center
It is less than the suspected malfunctions mother that preset busbar sequence voltage starts setting valve in the busbar sequence voltage set that wide area monitoring center receives
The set of line, and count the quantity of suspected malfunctions busbar；
First assessment unit 305 is uploaded to for each substation in combining information receptance d, regional power grid in wide area monitoring
The quantity of the theoretical quantity and suspected malfunctions busbar of the busbar sequence voltage information of the heart calculates the accuracy that wide area protection starts.
It is to a kind of reliability assessment device of wide area protection startup and fault zone positioning provided by the invention above
The explanation that one embodiment carries out, below by a kind of wide area protection provided by the invention is started and fault zone positioning it is reliable
Another embodiment of property apparatus for evaluating illustrates.
Referring to Fig. 4, the present invention provides a kind of wide area protections to start the reliability assessment device with fault zone positioning
Another embodiment, including：
First acquisition unit 401, the information receptance d for obtaining wide area monitoring center in Wide area protection system；
Second acquisition unit 402 is uploaded to the busbar sequence electricity at wide area monitoring center for obtaining each substation in regional power grid
Press the theoretical quantity of information；
Third acquiring unit 403, for obtaining the mother that each substation uploads in the regional power grid that wide area monitoring center receives
Line sequence voltage set；
First determination unit 404 is determined for starting setting valve according to the preset busbar sequence voltage in wide area monitoring center
It is less than the suspected malfunctions mother that preset busbar sequence voltage starts setting valve in the busbar sequence voltage set that wide area monitoring center receives
The set of line, and count the quantity of suspected malfunctions busbar；
First assessment unit 405 is uploaded to for each substation in combining information receptance d, regional power grid in wide area monitoring
The quantity of the theoretical quantity and suspected malfunctions busbar of the busbar sequence voltage information of the heart calculates the accuracy that wide area protection starts；
First assessment unit 405,
It is additionally operable to through the first preset formulaCalculate the correct of wide area protection startup
Rate；
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；γ is the quantity of suspected malfunctions busbar；
Fault zone positioning unit 406 is connect by the set of suspected malfunctions busbar and with the outlet of suspected malfunctions busbar
Element is as fault zone Λ；
Second determination unit 407, for determining the mother in the Λ of fault zone corresponding at least one port of each element
Line sequence voltage is less than the possibility magnitude-set that preset busbar sequence voltage starts setting valve；
Second assessment unit 408 is uploaded to for each substation in combining information receptance d, regional power grid in wide area monitoring
Busbar in the theoretical quantity and fault zone Λ of the busbar sequence voltage information of the heart corresponding to each at least one port of element
Sequence voltage is less than the possibility magnitude-set that preset busbar sequence voltage starts setting valve, calculates the accuracy of fault zone positioning；
Second assessment unit 408,
It is additionally operable to through the second preset formulaCalculate the correct of fault zone positioning
Rate；
In formula,The busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
Theoretical quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；For wide area monitoring center
The actual quantity for the busbar sequence voltage information that each substation uploads in the regional power grid received, hasAnd S ∝ d, symbol
For downward bracket function；Busbar sequence voltage in α ∈ { 1,2 } fault zone Λ corresponding to each at least one port of element is small
Start the possibility magnitude-set of setting valve in preset busbar sequence voltage.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
Term " first ", " second ", " third ", " the 4th " in the description of the present application and above-mentioned attached drawing etc. are (if deposited
) it is for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that use in this way
Data can be interchanged in the appropriate case, so that embodiments herein described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment need not limit
In those of clearly listing step or unit, but may include not listing clearly or for these processes, method, production
The intrinsic other steps of product or equipment or unit.
It should be appreciated that in this application, " at least one (item) " refers to one or more, and " multiple " refer to two or two
More than a."and/or", the incidence relation for describing affiliated partner indicate may exist three kinds of relationships, for example, " A and/or B "
It can indicate：A is only existed, B is only existed and exists simultaneously tri- kinds of situations of A and B, wherein A, B can be odd number or plural number.Word
It is a kind of relationship of "or" that symbol "/", which typicallys represent forward-backward correlation object,.At least one of " following (a) " or its similar expression refers to
Arbitrary combination in these, including individual event (a) or the arbitrary combination of complex item (a).At least one of for example, in a, b or c
(a) can indicate：A, b, c, " a and b ", " a and c ", " b and c ", or " a and b and c ", wherein a, b, c can be single, also may be used
To be multiple.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (full name in English：Read-Only
Memory, english abbreviation：ROM), random access memory (full name in English：Random Access Memory, english abbreviation：
RAM), the various media that can store program code such as magnetic disc or CD.The above, above example are only to illustrate this
The technical solution of application, rather than its limitations；Although the application is described in detail with reference to the foregoing embodiments, this field
Those of ordinary skill should understand that：Its still can with technical scheme described in the above embodiments is modified, or
Equivalent replacement of some of the technical features；And these modifications or replacements, do not make the essence of corresponding technical solution de-
Spirit and scope from each embodiment technical solution of the application.
Claims (8)
1. a kind of wide area protection starts and the reliability estimation method of fault zone positioning, which is characterized in that including：
S1, the information receptance d for obtaining wide area monitoring center in Wide area protection system；
S2, the theoretical quantity that each substation in regional power grid is uploaded to the busbar sequence voltage information at wide area monitoring center is obtained；
S3, the busbar sequence voltage set that each substation uploads in the regional power grid that wide area monitoring center receives is obtained；
S4, setting valve is started according to the preset busbar sequence voltage in wide area monitoring center, determines what wide area monitoring center received
It is less than the set that preset busbar sequence voltage starts the suspected malfunctions busbar of setting valve in busbar sequence voltage set, and counts doubtful event
Hinder the quantity of busbar；
Each substation is uploaded to the reason of the busbar sequence voltage information at wide area monitoring center in S5, combining information receptance d, regional power grid
By the quantity of quantity and suspected malfunctions busbar, the accuracy that wide area protection starts is calculated.
2. wide area protection according to claim 1 starts and the reliability estimation method of fault zone positioning, feature exist
In step S4 further includes later：
S6, using the set of suspected malfunctions busbar and the element being connect with the outlet of suspected malfunctions busbar as fault zone Λ；
S7, determine that the busbar sequence voltage in the Λ of fault zone corresponding at least one port of each element is less than preset busbar sequence
The possibility magnitude-set of voltage starting setting valve；
Each substation is uploaded to the reason of the busbar sequence voltage information at wide area monitoring center in S8, combining information receptance d, regional power grid
It is less than preset busbar sequence electricity by the busbar sequence voltage corresponding to each at least one port of element in quantity and fault zone Λ
Pressure starts the possibility magnitude-set of setting valve, calculates the accuracy of fault zone positioning.
3. wide area protection according to claim 1 starts and the reliability estimation method of fault zone positioning, feature exist
In step S5 is specifically included：
Pass through the first preset formulaCalculate the accuracy that wide area protection starts；
In formula,The reason of the busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
By quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；It is received for wide area monitoring center
To regional power grid in the actual quantity of busbar sequence voltage information that uploads of each substation, haveAnd S ∝ d, symbolFor to
Lower bracket function；γ is the quantity of suspected malfunctions busbar.
4. wide area protection according to claim 2 starts and the reliability estimation method of fault zone positioning, feature exist
In step S8 is specifically included：
Pass through the second preset formulaCalculate the accuracy of fault zone positioning；
In formula,The reason of the busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
By quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；It is received for wide area monitoring center
To regional power grid in the actual quantity of busbar sequence voltage information that uploads of each substation, haveAnd S ∝ d, symbolFor to
Lower bracket function；Busbar sequence voltage in α ∈ { 1,2 } fault zone Λ corresponding to each at least one port of element is less than pre-
Set the possibility magnitude-set that busbar sequence voltage starts setting valve.
5. a kind of wide area protection starts and the reliability assessment device of fault zone positioning, which is characterized in that including：
First acquisition unit, the information receptance d for obtaining wide area monitoring center in Wide area protection system；Second obtains list
Member, the theoretical quantity for being uploaded to the busbar sequence voltage information at wide area monitoring center for obtaining each substation in regional power grid；
Third acquiring unit, for obtaining the busbar sequence voltage that each substation uploads in the regional power grid that wide area monitoring center receives
Set；
First determination unit determines that wide area is supervised for starting setting valve according to the preset busbar sequence voltage in wide area monitoring center
It is less than the collection that preset busbar sequence voltage starts the suspected malfunctions busbar of setting valve in the busbar sequence voltage set that control center receives
It closes, and counts the quantity of suspected malfunctions busbar；
First assessment unit is uploaded to the busbar at wide area monitoring center for each substation in combining information receptance d, regional power grid
The quantity of the theoretical quantity and suspected malfunctions busbar of sequence voltage information calculates the accuracy that wide area protection starts.
6. wide area protection according to claim 5 starts and the reliability assessment device of fault zone positioning, feature exist
In further including：
Fault zone positioning unit is used for the set of suspected malfunctions busbar and the element being connect with the outlet of suspected malfunctions busbar
As fault zone Λ；
Second determination unit, for determining the busbar sequence voltage in the Λ of fault zone corresponding at least one port of each element
Less than the possibility magnitude-set that preset busbar sequence voltage starts setting valve；
Second assessment unit is uploaded to the busbar at wide area monitoring center for each substation in combining information receptance d, regional power grid
Busbar sequence voltage in the theoretical quantity and fault zone Λ of sequence voltage information corresponding to each at least one port of element is small
Start the possibility magnitude-set of setting valve in preset busbar sequence voltage, calculates the accuracy of fault zone positioning.
7. wide area protection according to claim 5 starts and the reliability estimation method of fault zone positioning, feature exist
In, the first assessment unit,
It is additionally operable to through the first preset formulaCalculate the accuracy that wide area protection starts；
In formula,The reason of the busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
By quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；It is received for wide area monitoring center
To regional power grid in the actual quantity of busbar sequence voltage information that uploads of each substation, haveAnd S ∝ d, symbolFor to
Lower bracket function；γ is the quantity of suspected malfunctions busbar.
8. wide area protection according to claim 6 starts and the reliability estimation method of fault zone positioning, feature exist
In, the second assessment unit,
It is additionally operable to through the second preset formulaCalculate the accuracy of fault zone positioning；
In formula,The reason of the busbar sequence voltage information at wide area monitoring center is uploaded to for each substation in regional power grid
By quantity；δ is information redundance；Symbol card (g) is used for the radix of description collections；It is received for wide area monitoring center
To regional power grid in the actual quantity of busbar sequence voltage information that uploads of each substation, haveAnd S ∝ d, symbolFor to
Lower bracket function；Busbar sequence voltage in α ∈ { 1,2 } fault zone Λ corresponding to each at least one port of element is less than pre-
Set the possibility magnitude-set that busbar sequence voltage starts setting valve.
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| CN105119243A (en) * | 2015-09-11 | 2015-12-02 | 合肥工业大学 | Wide area backup protection method based on fault voltage ratio and multi-information fusion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105119243A (en) * | 2015-09-11 | 2015-12-02 | 合肥工业大学 | Wide area backup protection method based on fault voltage ratio and multi-information fusion |
Non-Patent Citations (1)
| Title |
|---|
| 陈国炎: "广域后备保护原理与通信技术研究", 《中国博士学位论文全文数据库》 * |
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