CN105974267A - IEC 61850-based low current ground fault positioning system and method - Google Patents
IEC 61850-based low current ground fault positioning system and method Download PDFInfo
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- CN105974267A CN105974267A CN201610507077.7A CN201610507077A CN105974267A CN 105974267 A CN105974267 A CN 105974267A CN 201610507077 A CN201610507077 A CN 201610507077A CN 105974267 A CN105974267 A CN 105974267A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses an IEC 61850-based low current ground fault positioning system, comprising a substation and m monitoring lines connected with the substation, wherein m is an integer not smaller than 1; an IED (Intelligent Electronic Device) is arranged in the substation, a plurality of IEDs are arranged on each monitoring line, the IEDs on the same monitoring line are arranged in sequence from top to bottom according to preset intervals, each IED is used for detecting the ground fault of self downstream monitoring line, and a GOOSE control module is arranged in each IED, wherein each IED subscribes information issued by all downstream IEDs thereof via self GOOSE control modules. Correlation among the plurality of IEDs is realized, the transmission information is coordinated, the dependency on processing of a master station is not needed, the synchronization requirement for the system is reduced, and the requirement for processing of the master station is reduced. The invention further provides a method corresponding to the system, and the method has the same effect as the system and thus is not redundantly described herein.
Description
Technical field
The present invention relates to electric network fault detection field, particularly relate to a kind of based on IEC 61850
Low current grounding alignment system and method.
Background technology
China's medium voltage distribution network has a large capacity and a wide range, and occupies very important status in power system.
But medium voltage distribution network the most also has a lot of problem.
At present, power distribution network is still in the face of single-phase earth fault line selection and orientation problem.A lot of places exist
Use manual mode to draw path method to carry out failure line selection after there is singlephase earth fault, use the most again
The method of artificial line walking determines that fault particular location, this artificial patrolling method carry out fault location
Reduce power supply reliability and economy.Along with the construction of China's intelligent grid, small current neutral grounding
Fault line selection device comes into operation more and more.At present, position for low current grounding
Problem is domestic has been achieved for some achievements, as based on line voltage and zero mould current temporary state component
Fault location new method, realizes by feed line automatization system (FA), and FA main website is according to event
The track section at the feature localization of faults place that barrier point fore-and-aft direction parameters polarity is contrary.But,
In existing low current grounding localization method and technology, the realization of location relies on master too much
Standing, this is to synchronizing and the requirement height of location algorithm, it is achieved complex, positioning precision is also difficult to
Ensureing, the equipment of each producer lacks unified communication standard, it is difficult to the information that realizes is integrated and common
Enjoy, between substantial amounts of intelligent electronic device IED, lack real interoperability, for informationization
Have adverse effect with guarantee power supply quality.
Thus, do not rely on main website and ensure to carry out low current grounding accurately determining
Position, realizes integration and share of information simultaneously, is those skilled in the art's skills that solution is presently required
Art problem.
Summary of the invention
It is an object of the invention to provide a kind of low current grounding based on IEC 61850 location
System and method, can not rely on main website and ensure to carry out low current grounding accurately
Location, realizes integration and share of information simultaneously.
For solving above-mentioned technical problem, the technical scheme is that
A kind of low current grounding alignment system based on IEC 61850, including: transformer station
And the m bar monitoring circuit being connected with described transformer station, m is the integer not less than 1；Described
It is provided with an IED device in transformer station, each described monitoring circuit is equipped with multiple IED device,
And each IED device on same monitoring circuit arranges according to default interval to downstream successively from upstream
Row, each described IED device is for detecting the earth fault of the monitoring circuit in self downstream, each institute
Being equipped with GOOSE control module in stating IED device, wherein, each described IED device is subscribed to
All IED devices in this IED device downstream are issued by the GOOSE control module of self
Information.
Preferably, also include:
It is positioned on described transformer station and described m bar monitoring circuit, with each described IED device
Chopper one to one.
Preferably, described IED device includes:
For measuring bus residual voltage and the measurement module of circuit zero-sequence current；
For carrying out the functional module interface that threshold value is adjusted；
Adjust for the data measured according to described measurement module and described functional module interface
Threshold value, carry out the analytic function module of failure wave-recording；
For when described analytic function module judges to occur earth fault, carrying out the control alerted
Functional module；
For carrying out the defencive function module of earth fault line selection.
A kind of low current grounding localization method based on IEC 61850, including:
One IED device is set in advance in transformer station, and at each prison being connected with described transformer station
According to default spacing distance on survey line road, setting gradually n described IED device, n is big
In the integer of 1；
Each described IED device judges whether the monitoring circuit in self downstream occurs earth fault；
If it is determined that generation earth fault, then it is positioned at upstream, trouble point and nearest apart from described trouble point
IED device be defined as trouble point IED device, and fault message is issued by GOOSE
To all IED devices of this IED device upstream；
It is positioned at all IED devices of trouble point IED device upstream by resolving described trouble point
The GOOSE control module information of IED, obtains fault location information, and sends to presetting eventually
End.
Preferably, after judging earth fault, also include:
Judge whether the setting time of described trouble point IED device reaches default time threshold；
The most described trouble point IED device sends trip signal to corresponding chopper；
The circuit breaker trip corresponding with described trouble point IED device, carries out Fault Isolation.
Preferably, an IED device is set in advance in transformer station, and with described transformer station even
According to default spacing distance on each monitoring circuit connect, set gradually n described IED device
Including:
In advance each described IED device is carried out information modeling.
Compared with prior art, technique scheme has the advantage that
Low current grounding based on the IEC 61850 location system that the embodiment of the present invention is provided
System, including: transformer station and the m bar monitoring circuit being connected with transformer station, m is not less than 1
Integer；It is provided with an IED device in transformer station, each monitoring circuit is equipped with multiple IED
Each IED device on device, and same monitoring circuit from upstream to downstream according to default interval
Being arranged in order, each IED device is for detecting the earth fault of the monitoring circuit in self downstream, respectively
Being equipped with GOOSE control module in IED device, wherein, each IED device subscribes to this IED
The information that all IED devices in device downstream are issued by the GOOSE control module of self.
Every monitoring circuit on be provided with multiple IED device, each IED device monitoring himself extremely
Section between the IED device that downstream is adjacent, when monitoring circuit a certain section generation earth fault
Time, the IED device monitoring this section can be detected fault message, and be entered by GOOSE
Row issue, and be positioned at this IED device upstream each IED device can by subscribing to this information,
And by resolving the GOOSE control module of this trouble point IED device, obtain fault accurately
Positional information, owing to being communicated by GOOSE between each IED device, and is positioned at upstream
IED device subscribe to the information that trouble point IED device is issued, it is achieved that multiple IED devices it
Between interrelated, coordinating transmissions information, it is not necessary to rely on main website process, decrease system
Synchronize requirement, reduce the requirement that main website processes, use GOOSE to carry out information transmission, protect
Hinder the quick effectiveness of information transmission.The data sharing between each system can be realized simultaneously
Integrated with different application, it is simple to improve the intelligent grid level of IT application.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below
The accompanying drawing used required in embodiment or description of the prior art will be briefly described, aobvious and
Easily insight, the accompanying drawing in describing below is some embodiments of the present invention, common for this area
From the point of view of technical staff, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawing.
The small area analysis based on IEC 61850 that Fig. 1 is provided by one embodiment of the present invention connects
Earth fault positioning system structure schematic diagram；
The low-current ground fault line selection location that Fig. 2 is provided by one embodiment of the present invention
The modeling of IED device information and configuration structure schematic diagram；
The IED communication modeling that Fig. 3 is provided by a kind of detailed description of the invention of the present invention is tied with configuration
Structure schematic diagram；
A kind of based on IEC 61850 small area analysis that Fig. 4 provides for one embodiment of the present invention
Earth design method flow schematic diagram.
Detailed description of the invention
The core of the present invention is to provide a kind of low current grounding based on IEC 61850 location
System and method, can not rely on main website and ensure to carry out low current grounding accurately
Location, realizes integration and share of information simultaneously.
Understandable in order to enable the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below
In conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.
Elaborate detail in the following description so that fully understanding the present invention.But this
Bright can be different from alternate manner described here implement with multiple, those skilled in the art can
To do similar popularization in the case of intension of the present invention.Therefore the present invention is not by following public affairs
The restriction of the detailed description of the invention opened.
A kind of detailed description of the invention of the present invention provides a kind of small area analysis based on IEC 61850
Earth design system, it is characterised in that including: transformer station and be connected with transformer station
M bar monitoring circuit, m is the integer not less than 1；An IED device it is provided with, respectively in transformer station
The each IED device being equipped with on multiple IED device, and same monitoring circuit on monitoring circuit is certainly
Upstream to downstream is arranged in order according to default interval, and each IED device is used for detecting self downstream
Monitoring circuit earth fault, be equipped with GOOSE control module in each IED device, its
In, each IED device is subscribed to all IED devices in this IED device downstream and is passed through self
The information that GOOSE control module is issued.
Inventor studies discovery, as the narration of background section, current low current fault
Location mainly rely on main website, distribution main website by analyze and contrastive detection circuit on each
The information that FTU gathers carries out breakdown judge and location, and it is each that this just requires that distribution main website receives
The information of FTU is to synchronize, and otherwise contrast is insignificant, the most just cannot accurate must be out of order
Position.
And in present embodiment, in monitoring circuit, introduce multiple little electricity based on IEC 61850
Stream earthing wire-selecting location IED device, when there being earth fault to occur, utilizes small current neutral grounding to select
The selectivity of line location IED unit protection function, by coordinating the relational implementation event between IED
Barrier location.Wherein, defencive function optionally realize require: adjusting between relay protection
The principle coordinated step by step should be followed, i.e. when next stage circuit or element fault, faulty line or unit
The relay protection setting value of part must sensitivity and on movement time all with upper level circuit or unit
The relay protection setting value of part cooperates, and cuts selectively during to ensure grid collapses
Except fault.The movement time of protection adjusts by ladder principle, during the action of the most adjacent protection
Between, increase step by step to power supply direction from load, different time-delay actions is set to evade work
Make peak current and be short-circuited fault time, reduce power-off coverage.
Between each IED device, information exchange uses based on IEC 61850GOOSE (Generic
Object Oriented Substation Event, towards the transformer substation case of general object) multicast
Mode realizes by issuing and subscribing to, when faulty generation, and the IED dress nearest from trouble point
Put and detect fault at first, then notify the IED device of updrift side, it is possible to notice controls
Personnel.I.e. when monitoring circuit a certain section generation earth fault, monitor the IED dress of this section
Put and fault message can be detected, and issued by GOOSE, and be positioned at this IED dress
The each IED device putting upstream can be by subscribing to this information, and by resolving this trouble point IED
The GOOSE control module of device, obtains fault location information accurately, owing to each IED fills
Communicated by GOOSE between putting, and the IED device being positioned at upstream subscribes to trouble point IED
The information that device is issued, it is achieved that interrelated between multiple IED devices, coordinating transmissions is believed
Breath, it is not necessary to rely on main website and process, decrease the synchronization requirement to system, reduces main website and processes
Requirement, use GOOSE carry out information transmission, the quick effectiveness that the information that ensured is transmitted.
The integrated of the data sharing between each system and different application can be realized, it is simple to improve simultaneously
The intelligent grid level of IT application.
It should be noted that GOOSE is automatic for meeting transformer station in IEC 61850 standard
The mechanism of change system rapid message demand, the information being mainly used in realizing between many IED passes
Pass, including transmission tripping operation and switching signal (order), there is the high-transmission probability of success.Based on
GOOSE network transmission replaces traditional hardwire to realize the position of the switch, block signal and tripping operation
The transmitting of the real time information such as order, process layer application reliability, real-time, safety
Performance meets requirement, and wherein, transmission and the reception of GOOSE message (are sent out by publisher respectively
Cloth) and subscriber (subscription) perform.
Also, it should be noted IEC61850 standard to be power system automatic field the most complete
The ball universal standard, it achieves the engineering running standardization of intelligent substation.Whether which intelligence
Energy substation project can pass through SCD (system configuration) file and understand the structure of whole transformer station
And layout.
IED: intelligent electronic device (intelligent electronic device)
Small current line selection: full name Small Electric Current Earthing And Routing Device, is called for short small area analysis, is a kind of electricity
The protection equipment that Lixing industry uses.This equipment be applicable to 3kV-66kV isolated neutral or
Property point through resistance, the single-phase grounding selecting of arc suppression coil earthing system, it is possible to indicate generation single
The circuit of phase earth fault.
Refer to Fig. 1, Fig. 1 by one embodiment of the present invention provided based on IEC 61850
Low current grounding positioning system structure schematic diagram.
Further, in order to ensure when monitoring circuit generation earth fault, each on circuit
Equipment is protected, and this system also includes:
It is positioned on transformer station and m bar monitoring circuit, breaks one to one with each IED device
Road device.
In the present embodiment, as it is shown in figure 1, illustrate as a example by a monitoring circuit,
Wherein, Fig. 1 illustrates as a example by including four IED devices.Wherein, IED1 is and sets
Putting the IED device in transformer station, its chopper controlled i.e. switchs 1；Correspondingly, monitoring
IED device on circuit is followed successively by IED2, IED3, IED4, and IED2 controls switch 2, IED3
Controlling switch 3, IED4 controls switch 4.
Illustrate as a example by IED4 downstream fault, the work process of this various parts
For:
1) IED2, IED3 and IED4 are in running status to detect earth fault；
2) when earth fault occurs, IED4 detects earth fault, IED2, IED3 and
IED4 starts timing, and according to action movement time adjusted；
3) IED2, IED3 and IED4 release news block, and etc. information to be received；
4) each IED carrys out subscription information block according to following configuration:
A) IED4 is configured to not subscribe to any information；
B) IED3 is configured to subscribe to the information of IED4；
C) IED2 is configured to subscribe to the information of IED4 and IED3；
D) IED1 is configured to subscribe to the information of IED4, IED3 and IED2；
5) IED1, IED2 and IED3 receive the chunk that the IED device in respective downstream is issued；
6) IED4 meet setting time is set after give switch 4 transmission trip signals；
7) switch 4 disconnection realizes Fault Isolation.
In the present embodiment, each IED device can be former according to Small Electric Current Earthing And Routing Device work
Reason judge occur fault, as according to zero sequence power direction principle, harmonic current orientation principle,
A kind of fault judging to occur in external high-frequency signal code principle etc..But in this enforcement
In mode, IED4 is for other IED device, and the action delay time that it is adjusted is relatively
Short, to meet the defencive function selectivity that above-mentioned embodiment is previously mentioned.
In order to further illustrate each IED device action relationships when breaking down, this embodiment party
Formula is also illustrated as a example by fault occurs between IED3 and IED4.Wherein, each IED
The issue of chunk is identical with foregoing with the configuration of subscription.Difference is, works as generation
During earth fault, IED3 detects this fault message, and is whole in satisfied setting of IED3
Giving switch 3 transmission trip signal after fixing time, then, IED1 and IED2 can obtain subscription
Fault message, and notify that controlling terminal etc. keeps in repair with prompting maintainer in time.
In one embodiment of the invention, IED device includes: be used for measuring bus zero sequence
Voltage and the measurement module of circuit zero-sequence current；For carrying out the functional module interface that threshold value is adjusted；
The threshold value adjusted for the data measured according to measurement module and functional module interface, carries out event
The analytic function module of barrier record ripple；For analytic function module judge occur earth fault time,
Carry out the control functional module alerted；For carrying out the defencive function module of earth fault line selection.
Refer to the small current neutral grounding event that Fig. 2, Fig. 2 are provided by one embodiment of the present invention
Barrier line selection and location IED device information modeling and configuration structure schematic diagram.
In order to realize the function in the respective embodiments described above.IED device is carried out by present embodiment
Illustrate.In the present embodiment, IED device have defencive function, measuring function,
Control function, analytic function and interface function.In order to realize these functions above-mentioned, use IEC
The technology of 61850 standards and Object--oriented method, for low-current ground fault line selection location dress
Put IED and carry out information modeling.Build small current neutral grounding device IED based on IEC 61850 standard
Layered information model.Wherein, IED device include three logical device: LD1 (common equipment),
LD2 (route selection and location equipment), LD3 (measurement equipment).LD1 defines logical node
LLN0 and LPHD, logical node LLN0 represent the common data of logical device, as nameplate,
Equipment running status information；LPHD represents the public number of the physical equipment having logical node
According to, such as nameplate, the health information of physical equipment.It is important that LD2, it is existing dynamic
Make, start and on route selection Research foundation, add fault location output, alarm output GGIO；
LD3 includes measuring function logical node MMXU, MSQI, failure wave-recording logical node RADR
Deng.Metrical information includes: the phase voltage of bus and transient zero-sequence voltage, the transient zero-sequence of feeder line
Electric current, metrical information, for the recorder data of fault, exports fault waveform.
Line selection and location IED device in present embodiment and traditional route selection equipment difference exist
In, traditional route selection equipment only describes the number information of faulty line, such as circuit number FID100,
So which bar circuit when user learns the circuit specifically broken down.And in the present embodiment,
Being provided with multiple IED device on same monitoring circuit, the location equipment in each IED device is permissible
Section position numbering is set up, with in above-mentioned embodiment on the basis of there is circuit number originally
IED4 downstream fault as a example by, section position information can be described as FPID1004, refers to
Be i.e. section 4 downstream fault at FID100 circuit.Certainly, if at IED3 and
If breaking down between IED4, zone field can be described as FPID1003-4, i.e. represents
Fault is there occurs between the section 3 and 4 of FID100 circuit.It should be noted that this reality
The foregoing description content executing mode simply conveniently illustrates that as a example by concrete numbering circuit is compiled
Number and section position numbering enforcement, other side can also be selected according to practical situation
Formula is numbered, and this is not limited by present embodiment, specifically depends on the circumstances.
Set up logical device, logical node level information model according to above-mentioned content, use
SCL Manager instrument configures, and generates the SCL document of XML format.IED docks
Earth fault alarm, the action of ground protection, start and export faulty line numbering with section with
And the data of measuring value and data attribute configure.
Low-current ground fault line selection and positioning logic node, at transient earthing fault logic node
Extend on the basis of PTEF.This node is in addition to needing the status information of output startup, action
Increase numbering and the zone field of earth connection.The point information needed includes: residual voltage opens
Dynamic definite value, start-up study, action delay, the bus title of supervision and section position, feeder line number
Mesh etc..Functional configuration data object according to logical node and data attribute, the PTEF of extension
Data include starting Str, action Op and faulty line and sector number FPID, and Str data belong to
Property is state general of direction protection active information ACD, quality q and markers t, Op number
It is protection state general of active information ACT, quality q and markers t, FPID according to attribute
Data attribute is for describing character d, quality q and markers t.
The realization of earthing wire-selecting alarm function needs to configure the state Alm number of GGIO logical node
According to stVal attribute；The realization of measuring function needs to configure the electric current A of MMXU logical node
With voltage PHV data and three-phase simulation value mag.f attribute.
The communication modeling of IED refers to relate between each IED the association of information and mutual, and communication is passed through
Goose configures realization, and specific works includes data set (dataset) and the Goose of logical node
Controlling block (Goose Control Blocks, GCB) configuration, SCL Manager instrument provides
Data set and the interpolation of report-control block and configuration feature.Data set dataset and Goose
Control block GCB configuration process as it is shown on figure 3, process is:
A. data set configuration process: example (instance) the midpoint right button at logical node increases
Add data set, name to data set in data set dialog box, such as GGIO logical node to be given
Configuration dataset1, fills in data set and describes, and such as alarm Alarm, selects logical device LD2
With logical node GGIO, then select in data label data object Alm to be exported and
Data attribute stVal.Giving extension PTEF logical node configuration dataset2, data set configures
In logical node, newly created data set dataset1 and dataset2 is there will be after one-tenth.
B.Goose controls block configuration process: increase GSE Control in the example of LLN0
Block (GCB), in the GSE Control Block messagewindow ejected, controls to Goose
Clamp dog is named, and such as Gcb1, fills in description Alm, selects the data set dataset1 created in a),
And configure Mac address；The similar Goose that can configure controls block Gcb2.The control of GOOSE
Block GCB configured after in the junction point ConnectedAP of communication subnet and LLN0 logic
Node there will be newly created Goose and control block name Gcb1 and Gcb2.
After completing configuration, the XML format SCL document of generation comprises the required letter of fault location
, once there is earth fault in breath, GOOSE releases news, and other IED are by subscribing to and solving
Analysis GOOSE controls block, obtains fault location information.
Refer to one that Fig. 4, Fig. 4 provide for one embodiment of the present invention based on IEC
The low current grounding localization method schematic flow sheet of 61850.
Correspondingly, one embodiment of the present invention additionally provides a kind of based on IEC 61850 little
Current earthing Fault Locating Method, including:
S11: an IED device is set in advance in transformer station, and each be connected with transformer station
According to default spacing distance on monitoring circuit, setting gradually n IED device, n is for being more than
The integer of 1；
S12: each IED device judges whether the monitoring circuit in self downstream occurs earth fault,
If it is determined that generation earth fault, then turn to S13；If it is determined that there is not earth fault, then continue
Continuous self place circuit of monitoring, it is judged that whether the monitoring circuit in self downstream occurs earth fault；
S13: be positioned at upstream, trouble point and the nearest IED device of distance fault point is defined as fault
Point IED device, and fault message is distributed to by GOOSE the institute of this IED device upstream
There is IED device；
S14: be positioned at all IED devices of trouble point IED device upstream by resolving trouble point
The GOOSE control module information of IED, obtains fault location information, and sends to presetting eventually
End.
Further, after judging earth fault, also include:
Whether the setting time of failure judgement point IED device reaches default time threshold；
The most then IED device in trouble point sends trip signal to corresponding chopper；
The circuit breaker trip corresponding with trouble point IED device, carries out Fault Isolation.
Wherein, an IED device is set in advance in transformer station, and each be connected with transformer station
According to default spacing distance on monitoring circuit, set gradually n IED device and include:
In advance each IED device is carried out information modeling.Its modeling process sees corresponding system,
Do not repeat them here.
In sum, the embodiment of the present invention is provided small current neutral grounding based on IEC 61850 event
Barrier alignment system and method thereof.Multiple little electricity based on IEC 61850 is introduced in monitoring circuit
Stream earthing wire-selecting IED device, when there being earth fault to occur, utilizes small current earthing wire-selecting IED
The selectivity of unit protection function, by coordinating the relational implementation fault location between IED, respectively
Between IED device, information exchange uses based on IEC 61850GOOSE (Generic Object
Oriented Substation Event, towards the transformer substation case of general object) multicast lead to
Crossing issue and subscribe to realization, when faulty generation, the IED device nearest from trouble point is at first
Detect fault, then notify the IED device of updrift side, it is possible to notice controllers.
Achieve between multiple IED device is interrelated, coordinating transmissions information, it is not necessary to rely on main website
Process, decrease the synchronization requirement to system, reduce the requirement that main website processes, use GOOSE
The information of carrying out transmission, the quick effectiveness that the information that ensured is transmitted.Can realize each is simultaneously
Data sharing between system and different application integrated, it is simple to improve the intelligent grid level of IT application.
Realize small current earthing wire-selecting positioner IED information mould based on international standard IEC 61850
Type builds, and according to IEC 61850 hierarchical structure, completes the logical device to IED, logic joint
Point, data object and data attribute configuration, it is ensured that the integrity of transmission information.
Above a kind of low current grounding based on IEC 61850 provided by the present invention is positioned
System and method are described in detail.Former to the present invention of specific case used herein
Reason and embodiment are set forth, and the explanation of above example is only intended to help and understands this
Bright and core concept.It should be pointed out that, for those skilled in the art,
Under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and modification,
These improve and modify in the protection domain also falling into the claims in the present invention.
Claims (6)
1. a low current grounding alignment system based on IEC 61850, it is characterised in that
This system includes: transformer station and the m bar monitoring circuit being connected with described transformer station, m is not
Integer less than 1；It is provided with an IED device, in described transformer station on each described monitoring circuit all
The each IED device being provided with on multiple IED device, and same monitoring circuit is pressed to downstream from upstream
Being arranged in order according to default interval, each described IED device is for detecting the monitoring line in self downstream
The earth fault on road, is equipped with GOOSE control module in each described IED device, wherein,
Each described IED device is subscribed to all IED devices in this IED device downstream and is passed through self
The information that GOOSE control module is issued.
System the most according to claim 1, it is characterised in that this system also includes:
It is positioned on described transformer station and described m bar monitoring circuit, with each described IED device
Chopper one to one.
System the most according to claim 2, it is characterised in that described IED device bag
Include:
For measuring bus residual voltage and the measurement module of circuit zero-sequence current；
For carrying out the functional module interface that threshold value is adjusted；
Adjust for the data measured according to described measurement module and described functional module interface
Threshold value, carry out the analytic function module of failure wave-recording；
For when described analytic function module judges to occur earth fault, carrying out the control alerted
Functional module；
For carrying out the defencive function module of earth fault line selection.
4. a low current grounding localization method based on IEC 61850, it is characterised in that
Including:
One IED device is set in advance in transformer station, and at each prison being connected with described transformer station
According to default spacing distance on survey line road, setting gradually n described IED device, n is big
In the integer of 1；
Each described IED device judges whether the monitoring circuit in self downstream occurs earth fault；
If it is determined that generation earth fault, then it is positioned at upstream, trouble point and nearest apart from described trouble point
IED device be defined as trouble point IED device, and fault message is issued by GOOSE
To all IED devices of this IED device upstream；
It is positioned at all IED devices of trouble point IED device upstream by resolving described trouble point
The GOOSE control module information of IED, obtains fault location information, and sends to presetting eventually
End.
Method the most according to claim 4, it is characterised in that judging generation ground connection
After fault, also include:
Judge whether the setting time of described trouble point IED device reaches default time threshold；
The most described trouble point IED device sends trip signal to corresponding chopper；
The circuit breaker trip corresponding with described trouble point IED device, carries out Fault Isolation.
Method the most according to claim 5, it is characterised in that in advance in transformer station
One IED device is set, and according to default on each monitoring circuit being connected with described transformer station
Spacing distance, sets gradually n described IED device and includes:
In advance each described IED device is carried out information modeling.
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