CN105974267B - A kind of small current grounding fault positioning system and its method based on IEC 61850 - Google Patents
A kind of small current grounding fault positioning system and its method based on IEC 61850 Download PDFInfo
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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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- 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
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Abstract
The invention discloses a kind of small current grounding fault positioning systems based on IEC 61850, comprising: substation and the m item connecting with substation monitor route, and m is the integer not less than 1；An IED device is equipped in substation, multiple IED devices are equipped on each monitoring route, and each IED device on same monitoring route is arranged successively from upstream to downstream according to preset interval, each IED device is used to detect the ground fault of the monitoring route in itself downstream, GOOSE control module is equipped in each IED device, wherein, each IED device subscribes to the information that all IED devices in the IED device downstream are issued by the GOOSE control module of itself.Interrelated between multiple IED devices, coordinating transmissions information is realized, without relying on main website processing, reduces and the synchronous of system is required, reduce the requirement of main website processing.The present invention also provides methods corresponding with the system, and effect is identical as the system, and details are not described herein.
Description
Technical field
The present invention relates to electric network fault detection fields, more particularly to a kind of small current neutral grounding event based on IEC 61850
Hinder positioning system and its method.
Background technique
China's medium voltage distribution network has a large capacity and a wide range, and plays a very important role in the power system.However medium voltage distribution network
Also there are many problems in use.
Currently, power distribution network still faces single-phase earth fault line selection and orientation problem.Single-phase earthing event is occurring for many places
It draws path method to carry out failure line selection using manual mode after barrier, failure specific location is then determined using the method for artificial line walking again,
This artificial patrolling method, which carries out fault location, reduces power supply reliability and economy.With the construction of China's smart grid,
Low-current ground fault line selection device comes into operation more and more.Currently, domestic for small current grounding fault orientation problem
Some achievements, such as the fault location new method based on line voltage and zero mould current temporary state component are had been achieved for, certainly by feeder line
Dynamicization system (FA) realizes that FA main website determines the line where fault point according to the opposite feature of fault point front-rear direction parameters polarity
Road section.However, the realization of positioning relies on main website too much in existing small current grounding fault localization method and technology, this
High to synchronous and location algorithm requirement, realization is complex, and positioning accuracy is also difficult to ensure, the equipment of each producer lacks system
One communication standard, it is difficult to it realizes integration and share of information, really interoperability is lacked between a large amount of intelligent electronic device IED,
For informationization and ensure that power supply quality has adverse effect.
Thus, how not rely on main website and guarantee to be accurately positioned small current grounding fault, while realizing information
It is integrated and shared, it is a technical problem that technical personnel in the field need to solve at present.
Summary of the invention
The object of the present invention is to provide a kind of small current grounding fault positioning system and its method based on IEC 61850,
Main website can not be relied on and guarantee to be accurately positioned small current grounding fault, while realize integration and share of information.
In order to solve the above technical problems, the present invention provides the following technical scheme that
A kind of small current grounding fault positioning system based on IEC 61850, comprising: substation and with the substation
The m item of connection monitors route, and m is the integer not less than 1；An IED device is equipped in the substation, on each monitoring route
Multiple IED devices are equipped with, and each IED device on same monitoring route is successively arranged from upstream to downstream according to preset interval
Column, each IED device are used to detect the ground fault of the monitoring route in itself downstream, are equipped in each IED device
GOOSE control module, wherein each IED device subscribes to the GOOSE that all IED devices in the IED device downstream pass through itself
The information of control module publication.
Preferably, further includes:
It is breaking correspondingly with each IED device in the substation and on m item monitoring route
Device.
Preferably, the IED device includes:
For measuring the measurement module of bus residual voltage and route zero-sequence current；
For carrying out the functional module interface of threshold value adjusting；
The threshold value of data and functional module interface adjusting for being measured according to the measurement module, carries out failure
The analytic function module of recording；
Control function module for being alerted when the analytic function module determines to occur ground fault；
For carrying out the defencive function module of earth fault line selection.
A kind of small current grounding fault localization method based on IEC 61850, comprising:
One IED device is set in substation in advance, and according to pre- on each monitoring route connecting with the substation
If spacing distance, set gradually n IED devices, n is the integer greater than 1；
Each IED device judges whether the monitoring route in itself downstream occurs ground fault；
If it is determined that ground fault occurs, then it is located at fault point upstream and the IED device definition nearest apart from the fault point
For fault point IED device, and fault message is distributed to all IED devices of the IED device upstream by GOOSE；
All IED devices positioned at fault point IED device upstream control mould by parsing the GOOSE of the fault point IED
Block message obtains fault location information, and is sent to default terminal.
Preferably, after determining generation ground fault, further includes:
Judge whether the setting time of the fault point IED device reaches preset time threshold；
If so, the fault point IED device sends trip signal to corresponding breaker；
Circuit breaker trip corresponding with the fault point IED device carries out Fault Isolation.
Preferably, an IED device is set in substation in advance, and on each monitoring route connecting with the substation
According to preset spacing distance, setting gradually the n IED devices includes:
Information modeling is carried out to each IED device in advance.
Compared with prior art, above-mentioned technical proposal has the advantage that
Small current grounding fault positioning system based on IEC 61850 provided by the embodiment of the present invention, comprising: substation
And the m item monitoring route being connect with substation, m is the integer not less than 1；It is equipped with an IED device in substation, respectively monitors line
Road is equipped with multiple IED devices, and each IED device on same monitoring route from upstream to downstream according to preset interval according to
Secondary arrangement, each IED device are used to detect the ground fault of the monitoring route in itself downstream, are equipped with GOOSE control in each IED device
Molding block, wherein all IED devices that each IED device subscribes to the IED device downstream are sent out by the GOOSE control module of itself
The information of cloth.Multiple IED devices are provided on every monitoring route, its own is adjacent to downstream for each IED device monitoring
Section between IED device, when ground fault occurs for a certain section of monitoring route, the IED device for monitoring the section can be examined
Fault message is measured, and is issued by GOOSE, and each IED device for being located at the IED device upstream can be somebody's turn to do by subscribing to
Information, and by the GOOSE control module of parsing fault point IED device, accurate fault location information is obtained, due to each
The IED device for being communicated between IED device by GOOSE, and being located at upstream subscribes to the information of fault point IED device publication,
Interrelated between multiple IED devices, coordinating transmissions information is realized, without relying on main website processing, is reduced to system
It is synchronous to require, the requirement of main website processing is reduced, information transmission is carried out using GOOSE, has ensured the fast and effective of information transmission
Property.Integrating for the data sharing and different application between each system may be implemented simultaneously, it is information-based convenient for improving smart grid
It is horizontal.
Detailed description of the invention
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 technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the small current grounding fault positioning system based on IEC 61850 provided by one embodiment of the present invention
Structural schematic diagram；
Fig. 2 is that low-current ground fault line selection provided by one embodiment of the present invention positions the modeling of IED device information
With configuration structure schematic diagram；
Fig. 3 is IED communication modeling and configuration structure schematic diagram provided by a kind of specific embodiment of the present invention；
Fig. 4 is a kind of small current grounding fault positioning side based on IEC 61850 that one embodiment of the present invention provides
Method flow diagram.
Specific embodiment
Core of the invention is to provide a kind of small current grounding fault positioning system and its method based on IEC 61850,
Main website can not be relied on and guarantee to be accurately positioned small current grounding fault, while realize integration and share of information.
It is understandable in order to enable the above objects, features and advantages of the present invention to become apparent, with reference to the accompanying drawing to this hair
Bright specific embodiment is described in detail.
Detail is elaborated in the following description to fully understand the present invention.But the present invention can with it is a variety of not
Other way described herein is same as to implement, those skilled in the art can do class without violating the connotation of the present invention
Like popularization.Therefore the present invention is not limited by following public specific embodiment.
A kind of specific embodiment of the invention provides a kind of small current grounding fault positioning system based on IEC 61850
System characterized by comprising substation and the m item connecting with substation monitor route, and m is the integer not less than 1；Power transformation
It stands interior equipped with an IED device, each monitor is equipped with multiple IED devices on route, and each IED device on same monitoring route is certainly
Upstream to downstream is arranged successively according to preset interval, and each IED device is used to detect the ground connection event of the monitoring route in itself downstream
Hinder, be equipped with GOOSE control module in each IED device, wherein each IED device subscribes to all IED dress in the IED device downstream
Set the information issued by the GOOSE control module of itself.
Inventor the study found that as background technology part narration, current low current fault positioning mainly relies on
In main website, distribution main website carries out breakdown judge and positioning by the information of each FTU acquisition on analysis and contrastive detection route, this
The information for each FTU for requiring distribution main website to receive be it is synchronous, otherwise comparison be it is meaningless, also just can not accurately obtain
Abort situation.
And in present embodiment, multiple small current earthing wire-selecting positioning based on IEC 61850 are introduced in monitoring route
IED device, using the selectivity of small current earthing wire-selecting positioning IED unit protection function, passes through when there is ground fault generation
Coordinate the relational implementation fault location between IED.Wherein, the realization requirement of the selectivity of defencive function: between relay protection
Adjusting should follow the principle cooperated step by step, i.e., when next stage circuit or element fault, the relay protection of faulty line or element
Setting valve must cooperate with the relay protection setting value of upper level route or element in sensitivity and on actuation time, with
Guarantee selectively to cut off failure when grid collapses.The actuation time of protection is adjusted by ladder principle, i.e., adjacent
The actuation time of protection increases step by step from load to power supply direction, and different time-delay actions is arranged to evade work spike
When electric current and generation short trouble, the coverage of power-off is reduced.
Information exchange, which uses, between each IED device is based on IEC 61850GOOSE (Generic Object Oriented
Substation Event, the transformer substation case towards general object) multicast realized by publication and subscribing to, when having therefore
When barrier occurs, the IED device nearest from fault point detect at first to be out of order, then the IED device of notice updrift side, and can be with
Notify controllers.I.e. when ground fault occurs for a certain section of monitoring route, the IED device for monitoring the section can be detected
Fault message, and issued by GOOSE, and each IED device for being located at the IED device upstream can be by subscribing to the letter
Breath, and by the GOOSE control module of parsing fault point IED device, accurate fault location information is obtained, due to each IED
The IED device for being communicated between device by GOOSE, and being located at upstream subscribes to the information of fault point IED device publication, realizes
Interrelated, coordinating transmissions information between multiple IED devices reduces the synchronization to system without relying on main website processing
It is required that reducing the requirement of main website processing, information transmission is carried out using GOOSE, has ensured the fast and effective property of information transmission.Together
When the integrated of data sharing between each system and different application may be implemented, convenient for improving the smart grid level of IT application.
It should be noted that GOOSE is in 61850 standard of IEC for meeting electric substation automation system rapid message need
The mechanism asked is mainly used for realizing the information transmitting between more IED, including transmission tripping and switching signal (order), has
The high-transmission probability of success.Traditional hardwire is replaced to realize the position of the switch, block signal and tripping life based on GOOSE network transmission
The reliable transmission of the real time information such as order is met the requirements in the reliability, real-time, security performance of process layer application, wherein
GOOSE message sends and receives respectively by publisher (publication) and subscriber (subscription) Lai Zhihang.
It should also be noted that, IEC61850 standard is the unique universal standard of power system automatic field,
Realize the engineering running standardization of intelligent substation.Whether which intelligent substation engineering can (system be matched by SCD
Set) file understand whole transformer station structure and layout.
IED: intelligent electronic device (intelligent electronic device)
Small current line selection: full name Small Electric Current Earthing And Routing Device, abbreviation low current are a kind of protections that power industry uses
Equipment.The equipment is suitable for 3kV-66kV isolated neutral or neutral point connects through resistance, the single-phase of arc suppression coil earthing system
Ground route selection is able to indicate that the route that singlephase earth fault occurs.
Referring to FIG. 1, Fig. 1 is the small current neutral grounding event provided by one embodiment of the present invention based on IEC 61850
Hinder positioning system structure schematic diagram.
It further, should in order to guarantee to protect each equipment on route when monitoring route generation ground fault
System further include:
In substation and on m item monitoring route, with each one-to-one breaker of IED device.
In the present embodiment, as shown in Figure 1, being illustrated by taking a monitoring route as an example, wherein Fig. 1 is to include four
It is illustrated for a IED device.Wherein, IED1 is the IED device being arranged in substation, and the breaker of control is opened
Close 1；Correspondingly, the IED device monitored on route is followed successively by IED2, IED3, IED4, IED2 control switch 2, IED3 control switch
3, IED4 control switches 4.
It is illustrated by taking IED4 downstream fault as an example, the course of work of the various parts are as follows:
1) IED2, IED3 and IED4 are in operating status to detect ground fault；
2) when ground fault occurs, IED4 detects ground fault, and IED2, IED3 and IED4 start timing, and according to
The actuation time of adjusting acts；
3) IED2, IED3 and IED4 release information block, and wait 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 block of information of the IED device publication in respective downstream；
6) IED4 sends trip signal to switch 4 after meeting setting setting time；
7) switch 4, which disconnects, realizes Fault Isolation.
In the present embodiment, each IED device can judge the event occurred according to Small Electric Current Earthing And Routing Device working principle
Barrier, such as sentenced according to one of zero sequence power direction principle, harmonic current orientation principle, external high-frequency signal code principle
The disconnected failure occurred.But IED4 is for other IED devices in the present embodiment, adjusting action delay when
Between it is shorter, to meet the defencive function selectivity that above embodiment is previously mentioned.
In order to further illustrate the action relationships of each IED device in the event of a failure, present embodiment is also occurred with failure
It is illustrated between IED3 and IED4.Wherein, the configuration of publication and the subscription of each IED block of information and above content phase
Together.It the difference is that upon the occurrence of a ground fault, IED3 detects the fault message, and is that IED3 is meeting setting
Trip signal is sent to switch 3 after setting time, then, IED1 and IED2 can obtain the fault message of subscription, and notify in time
Controlling terminal etc. is to remind maintenance personal to repair.
In one embodiment of the invention, IED device includes: for measuring bus residual voltage and route zero sequence electricity
The measurement module of stream；For carrying out the functional module interface of threshold value adjusting；It data for being measured according to measurement module and connects
The threshold value of mouth functional module adjusting, carries out the analytic function module of failure wave-recording；For being connect in the judgement of analytic function module
When earth fault, the control function module that is alerted；For carrying out the defencive function module of earth fault line selection.
Referring to FIG. 2, Fig. 2 is that low-current ground fault line selection provided by one embodiment of the present invention positions IED dress
Set information modeling and configuration structure schematic diagram.
In order to realize the function in the respective embodiments described above.Present embodiment illustrates IED device.At this
In embodiment, IED device has defencive function, measuring function, control function, analytic function and interface function.In order to realize
These above-mentioned functions are positioned using the technology and Object--oriented method of IEC61850 standard for low-current ground fault line selection
Device IED carries out information modeling.Construct the small current neutral grounding device IED Layered information model based on 61850 standard of IEC.Its
In, IED device includes three logical device: LD1 (common equipment), LD2 (route selection and positioning device), LD3 (measurement equipment).
LD1 defines logical node LLN0 and LPHD, and logical node LLN0 represents the common data of logical device, as nameplate, equipment are transported
Row status information；LPHD represents the common data for possessing the physical equipment of logical node, nameplate, operation conditions such as physical equipment
Information.Emphasis is LD2, it is existing movement, starting and route selection Research foundation on, increase fault location output, alert it is defeated
GGIO out；LD3 includes measuring function logical node MMXU, MSQI, failure wave-recording logical node RADR etc..Metrical information includes:
The phase voltage and transient zero-sequence voltage of bus, the transient zero-sequence current of feeder line, metrical information are used for the recorder data of failure, output
Fault waveform.
Line selection and location IED device in present embodiment and traditional route selection equipment the difference is that, traditional route selection
Equipment only describes the number information of faulty line, such as circuit number FID100, so that user learns the line specifically to break down
Which route when road.And in the present embodiment, it is equipped with multiple IED devices on same monitoring route, determines in each IED device
Position equipment can add section position number on the basis of having circuit number originally, under the IED4 in above embodiment
For trip is broken down, section position information can be described as FPID1004, and what is referred to is in 4 downstream of section of FID100 route
It breaks down.Certainly, if breaking down between IED3 and IED4, section information can be described as FPID1003-4,
It indicates that failure has occurred between the section 3 and 4 of FID100 route.It should be noted that the foregoing description of present embodiment
Content is to illustrate circuit number and the implementation that section position is numbered by taking specific numbering as an example to facilitate, according to
Actual conditions can also select other modes to be numbered, and present embodiment to this and without limitation, specifically depends on the circumstances.
Logical device, logical node level information model are established based on the above contents, using SCL Manager tool
It is configured, generates the SCL document of XML format.IED is to ground fault alarm, the movement of ground protection, starting and output event
Barrier circuit number and the data and data attribute of section and measuring value are configured.
Low-current ground fault line selection and positioning logic node expand on the basis of transient earthing fault logic node PTEF
Exhibition.The node increases the number and section information of earth connection other than needing to export the status information of starting, movement.It needs
Fixed value information include: residual voltage starting definite value, start-up study, action delay, the bus title of monitoring and section position, feedback
Line number mesh etc..According to the functional configuration data object and data attribute of logical node, the PTEF data of extension include starting Str,
Act Op and faulty line and state general that sector number FPID, Str data attribute is direction protection active information ACD,
Quality q and markers t, Op data attribute are state general, the quality q and markers t, FPID data category for protecting active information ACT
Property for description character d, quality q and markers t.
The realization of earthing wire-selecting alarm function needs to configure the state Alm data and stVal attribute of GGIO logical node；Amount
The realization of brake needs to configure the electric current A and voltage PHV data and three-phase simulation value mag.f attribute of MMXU logical node.
The communication modeling of IED, which refers to, is related to the association and interaction of information between each IED, communication is configured by Goose and realized, tool
Body running includes that the data set (dataset) of logical node and Goose control block (Goose Control Blocks, GCB) are matched
It sets, SCL Manager tool provides addition and the configuration feature of data set and report-control block.Data set dataset and
Goose control block GCB configuration process is as shown in figure 3, process are as follows:
A. data set configuration process: increase data set in example (instance) the midpoint right button of logical node, in data
Collect in dialog box and named to data set, such as to configure dataset1 to GGIO logical node, fill in data set description, such as alert
Alarm, select logical device LD2 and logical node GGIO, then in data label select the data object Alm to be exported and
Data attribute stVal.Dataset2 is configured to extension PTEF logical node, can be gone out in logical node after the completion of data set configuration
Existing newly created data set dataset1 and dataset2.
B.Goose control block configuration process: increase GSE Control Block (GCB) in the example of LLN0, popping up
GSE Control Block messagewindow in, to Goose control block name, such as Gcb1, fill in description Alm, select in a)
The data set dataset1 of creation, and configure the address Mac；It is similar to configure Goose control block Gcb2.The control block of GOOSE
It will appear in the tie point ConnectedAP of communication subnet and in LLN0 logical node after the completion of GCB configuration newly created
Goose control block names Gcb1 and Gcb2.
Completion includes fault location information needed in the XML format SCL document of generation with postponing, once ground connection event occurs
Barrier, GOOSE release information, other IED obtain fault location information by subscribing to and parsing GOOSE control block.
Referring to FIG. 4, Fig. 4 is a kind of small current neutral grounding event based on IEC61850 that one embodiment of the present invention provides
Hinder localization method flow diagram.
Correspondingly, it is fixed to additionally provide a kind of small current grounding fault based on IEC 61850 for one embodiment of the present invention
Position method, comprising:
S11: an IED device is set in substation in advance, and according to pre- on each monitoring route connecting with substation
If spacing distance, set gradually n IED device, n is the integer greater than 1；
S12: each IED device judges whether the monitoring route in itself downstream occurs ground fault, if it is determined that ground connection event occurs
Barrier, then turn to S13；If it is determined that then continuing route where monitoring itself there is no ground fault, judging the monitoring in itself downstream
Whether route occurs ground fault；
S13: positioned at fault point upstream and the nearest IED device of distance fault point is defined as fault point IED device, and will therefore
Barrier information is distributed to all IED devices of the IED device upstream by GOOSE；
S14: all IED devices positioned at fault point IED device upstream control mould by the GOOSE of parsing fault point IED
Block message obtains fault location information, and is sent to default terminal.
Further, after determining generation ground fault, further includes:
Judge whether the setting time of fault point IED device reaches preset time threshold；
If so, fault point IED device sends trip signal to corresponding breaker；
Circuit breaker trip corresponding with fault point IED device carries out Fault Isolation.
Wherein, an IED device is set in substation in advance, and according to pre- on each monitoring route connecting with substation
If spacing distance, setting gradually n IED device includes:
Information modeling is carried out to each IED device in advance.Its modeling process is referring to corresponding system, and details are not described herein.
In conclusion the embodiment of the present invention provide small current grounding fault positioning system based on IEC 61850 and its
Method.Multiple small current earthing wire-selecting IED devices based on IEC 61850 are introduced in monitoring route, when there is ground fault hair
When raw, using the selectivity of small current earthing wire-selecting IED unit protection function, by coordinating the relational implementation failure between IED
It positions, information exchange, which uses, between each IED device is based on IEC 61850GOOSE (Generic Object Oriented
Substation Event, the transformer substation case towards general object) multicast realized by publication and subscribing to, when having therefore
When barrier occurs, the IED device nearest from fault point detect at first to be out of order, then the IED device of notice updrift side, and can be with
Notify controllers.Interrelated between multiple IED devices, coordinating transmissions information is realized, without relying on main website processing, is subtracted
Lack and the synchronous of system has been required, reduced the requirement of main website processing, information transmission is carried out using GOOSE, has ensured information biography
Defeated fast and effective property.Integrating for the data sharing and different application between each system may be implemented, simultaneously convenient for improving intelligence
It can electric network informationization level.Realize the small current earthing wire-selecting positioning device IED information model based on international standard IEC 61850
Building, according to 61850 hierarchical structure of IEC, the logical device of IED, logical node, data object and data attribute are matched in completion
It sets, guarantees the integrality of transmission information.
Above to a kind of small current grounding fault positioning system and its method based on IEC 61850 provided by the present invention into
It has gone and has been discussed in detail.Used herein a specific example illustrates the principle and implementation of the invention, the above implementation
The explanation of example is merely used to help understand the present invention and its core concept.It should be pointed out that for the ordinary skill of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for personnel, these improvement
It is also fallen within the protection scope of the claims of the present invention with modification.
Claims (6)
1. a kind of small current grounding fault positioning system based on IEC 61850, which is characterized in that the system includes: substation
And the m item monitoring route being connect with the substation, m is the integer not less than 1；An IED device is equipped in the substation,
Be equipped with multiple IED devices on each monitoring route, and each IED device on same monitoring route from upstream to downstream according to
Preset interval is arranged successively, and each IED device is used to detect the ground fault of the monitoring route in itself downstream, each described
GOOSE control module is equipped in IED device, wherein each IED device subscribes to all IED devices in the IED device downstream
The information issued by the GOOSE control module of itself.
2. system according to claim 1, which is characterized in that the system further include:
In the substation and on m item monitoring route, with each one-to-one breaker of IED device.
3. system according to claim 2, which is characterized in that the IED device includes:
For measuring the measurement module of bus residual voltage and route zero-sequence current；
For carrying out the functional module interface of threshold value adjusting；
The threshold value of data and functional module interface adjusting for being measured according to the measurement module, carries out failure wave-recording
Analytic function module；
Control function module for being alerted when the analytic function module determines to occur ground fault；
For carrying out the defencive function module of earth fault line selection.
4. a kind of small current grounding fault localization method based on IEC 61850 characterized by comprising
One IED device is set in substation in advance, and according to preset on each monitoring route connecting with the substation
Spacing distance, sets gradually the n IED devices, and n is the integer greater than 1；
Each IED device judges whether the monitoring route in itself downstream occurs ground fault；
If it is determined that ground fault occurs, then it is located at fault point upstream and the IED device nearest apart from the fault point is defined as event
Hinder point IED device, and fault message is distributed to all IED devices of the IED device upstream by GOOSE；
All IED devices positioned at fault point IED device upstream are believed by parsing the GOOSE control module of the fault point IED
Breath obtains fault location information, and is sent to default terminal.
5. according to the method described in claim 4, it is characterized in that, after determining generation ground fault, further includes:
Judge whether the setting time of the fault point IED device reaches preset time threshold；
If so, the fault point IED device sends trip signal to corresponding breaker；
Circuit breaker trip corresponding with the fault point IED device carries out Fault Isolation.
6. according to the method described in claim 5, it is characterized in that, an IED device is arranged in substation in advance, and with institute
It states on each monitoring route of substation's connection according to preset spacing distance, setting gradually the n IED devices includes:
Information modeling is carried out to each IED device in advance.
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| CN106911498A (en) * | 2017-02-08 | 2017-06-30 | 湖北省新能恒达电力工程有限公司 | The method of power distribution network distributed terminal intelligent modeling communication |
| US10935609B2 (en) | 2017-09-12 | 2021-03-02 | Abb Schweiz Ag | Methods and systems for ground fault detection in a power distribution system |
| CN108872783B (en) * | 2018-05-24 | 2020-10-09 | 国网浙江省电力有限公司电力科学研究院 | Single-phase earth fault section positioning method of resonance earthing system |
| CN109119979A (en) * | 2018-10-25 | 2019-01-01 | 西南交通大学 | A kind of cable fault protective device and its guard method |
| CN110659060A (en) * | 2019-08-26 | 2020-01-07 | 珠海许继电气有限公司 | In-place distributed FA configuration rapid configuration method and system |
| CN110988598B (en) * | 2019-12-17 | 2021-01-26 | 国网河北省电力有限公司 | Petal type urban power grid ground fault positioning method based on zero sequence current association |
| CN112731201B (en) * | 2021-03-22 | 2022-08-12 | 上海宏力达信息技术股份有限公司 | Single-phase earth fault studying and judging method and system in transient zero sequence power direction |
| CN113484683B (en) * | 2021-07-14 | 2022-11-08 | 贵州电网有限责任公司 | Power distribution network fault positioning system and method based on transient information |
| CN115102144B (en) * | 2022-08-25 | 2022-11-11 | 长春工程学院 | Small current grounding system fault protection device and method |
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