CN108011358B - A kind of power distribution network multinode intelligent fault diagnosis method based on Situation Awareness - Google Patents
A kind of power distribution network multinode intelligent fault diagnosis method based on Situation Awareness Download PDFInfo
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- CN108011358B CN108011358B CN201711160736.5A CN201711160736A CN108011358B CN 108011358 B CN108011358 B CN 108011358B CN 201711160736 A CN201711160736 A CN 201711160736A CN 108011358 B CN108011358 B CN 108011358B
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- 230000003068 static effect Effects 0.000 claims abstract description 9
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- 230000033001 locomotion Effects 0.000 claims description 20
- 230000001052 transient effect Effects 0.000 claims description 16
- 230000006837 decompression Effects 0.000 claims description 14
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- 230000000172 allergic effect Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/07—Details with automatic reconnection and with permanent disconnection after a predetermined number of reconnection cycles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
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- H02J13/0017—
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The power distribution network multinode intelligent fault diagnosis method based on Situation Awareness that the invention discloses a kind of, the following steps are included: being primarily based on the static failure diagnosis that Situation Awareness carries out each node device of power distribution network, by obtaining electrical network basic data from electric system, the verifying of comprehensive descision fault message determines result；It is then based on Situation Awareness and carries out fault moment equipment state variation diagnostic, multinode faulty equipment is recruited immediately and surveys fault moment electric current calculating jump information, state change is analyzed, correctness verification is carried out to single equipment fault diagnosis；Finally based on relationship between Situation Awareness comprehensive analysis Distribution Network Equipment failure, event correlation diagnosis is carried out to each node failure according to power network topology, merges relevant fault, accuracy is mutually verified by upstream and downstream equipment fault.
Description
Technical field
The present invention relates to the fault diagnosis fields of electric system, more particularly, to a kind of distribution based on Situation Awareness
Net multinode intelligent fault diagnosis method.
Background technique
With the raising of Distribution Network Equipment equipment and the development and application of monitoring automation technology, power distribution network access is big
The automation equipments such as FTU, DTU, fault detector are measured, in addition major network bus, substation's outlet switch and metering automation system
The information content of the equipment such as transformer terminals under unified central planning, access electrical power distribution automatization system main website increases severely therewith.The main website of mainstream generally deposits at present
The problem of be that collected equipment operating data is all shown in chronological order, not plus effectively layering or judgement processing, and
Alarm window is pushed in a discrete fashion, once accident occurs, will generate a large amount of related warning information.This traditional matches
Power grid alarm, contains much information, information type is complicated, without analysis ratiocination process, and dispatcher is difficult to analyze current power distribution network operation
The critical event of middle generation, to affect accident treatment efficiency.
The advanced application of part main website can protection act based on single automation equipment and switch changed position information realization open
The tripping of pass diagnoses, but its major defect is: 1) since current electrical secondary system signal is delayed or reports by mistake, especially metering is automatic
The alarm signal problem of the distribution transformer terminals of change system, causes fault diagnosis mistaken diagnosis higher；2) it cannot handle caused by single failure
The cascade alarm of substation's outlet switch, branched breaker, branch line on-load switch, fault of branch line indicator, distribution transformer terminals.
Summary of the invention
Present invention aim to address above-mentioned one or more deficiencies, propose a kind of power distribution network more piece based on Situation Awareness
Point failure intelligent diagnosing method.
To realize the above goal of the invention, the technical solution adopted is that:
A kind of power distribution network multinode intelligent fault diagnosis method based on Situation Awareness, comprising the following steps:
S1: the static failure diagnosis of each node device of power distribution network is carried out based on Situation Awareness, by obtaining from electric system
Electrical network basic data, the verifying of comprehensive descision fault message determine result；
S2: fault moment equipment state variation diagnostic is carried out based on Situation Awareness, survey is recruited immediately to multinode faulty equipment
Fault moment electric current calculates jump information, analyzes state change, carries out correctness verification to single equipment fault diagnosis；
S3: based on relationship between Situation Awareness comprehensive analysis Distribution Network Equipment failure, according to power network topology to each node failure
Event correlation diagnosis is carried out, merges relevant fault, accuracy is mutually verified by upstream and downstream equipment fault.
Electric system described in step S1 includes EMS system, DMS system, metering automation system, generalized information system.
Electrical network basic data described in step S1 includes that electric network model information, equipment digital & analog signal information, power grid mode are converted
Business information；
Wherein electric network model packet enclosed tool control area, outlet switch, fault detector, distribution power transformation device, plant area, feeder line,
On-load switch, measurement, interval, branch line, breaker, topology；
Equipment digital & analog signal information includes switch state, protection signal, device current；
Power grid mode transformation service information temporarily turns including information listed in station, distribution scheduled outage information, distribution for letter
Breath.
Each node device static failure of power distribution network described in step S1, which diagnoses, includes:
1) no-voltage of entire station, bus loss of pressure directly acquire EMS main website judgement decompression telegram in reply result；
2) substation's outlet switch, feeder line do/branched breaker acquisition EMS, DMS main website protection act, switch changed position letter
Number carry out instantaneous/permanent fault diagnosis.Protection act mainly has zero sequence movement, quick-break movement, overcurrent movement, landing operation, guarantor
Shield acts, accident is total etc., and switch changed position information is reclosing, separating brake, switching signal.Protection act is diagnosed as fault type,
Switch changed position information is used as fail result analysis, and output protection acts class permanent fault if only sub-gate signal, if there is coincidence
Lock, a separating brake, the primary then output protection that closes a floodgate act successful reclosing class transient fault, if having reclosing, twice separating brake, primary
The then output protection that closes a floodgate acts unsuccessful reclosing class permanent fault.Transient fault recruits survey switch state to should be combined floodgate, permanent event
Barrier recruits survey switch state to should be separating brake；
3) feeder line it is dry/branch line on-load switch obtain DMS main website separating brake, combined floodgate and block signal carry out point, close, failure every
From diagnosis；
4) fault detector obtains DMS main station failure type and carries out fault actions diagnosis；
5) distribution transforming acquisition metering automation system stops extensive electric phase shortage alarm progress decompression, phase shortage telegram in reply diagnoses.
Step S2 the following steps are included:
S2.1: continuously taking 5 minutes real-time three-phase current curves before and after fault moment, calculates every 10 seconds each phase currents in front and back
Hop rate；Wherein
Maximum value in 30 hop rates is taken, is diagnosed as device current jump, electricity respectively if more than 20% or equal to 100%
Stream zero, is otherwise diagnosed as no jump；
S2.2: it examines and cannot pass through by verification, or without jump if faulty equipment is diagnosed as electric current zero.
Step S3 the following steps are included:
S3.1: switch fault state is automated according to upstream first, verification distribution transforming stops information of sending a telegram in reply, under permanent fault equipment
Allergic effect whole decompression is matched in trip, and transient fault device downstream stops to send a telegram in reply in short-term with allergic effect, upstream distribution automation equipment fault-free but
When distribution transforming has decompression phase shortage, substation's outlet switch or circuit breaker failure tripping operation information are released by distribution transforming is counter according to power network topology,
And it is supplemented in tree-shaped grouping；
S3.2: finding automatic Switching from root node with breadth traversal algorithm, disconnected comprising power transformation outlet switch or Heavenly Stems and Earthly Branches line
Road device；
S3.3: first permanent fault is found with extreme saturation algorithm using Switching automatic in step S3.2 as starting point
Automatic Switching or on-load switch or distribution transforming, fault point are the fault detector of the equipment or the device downstream closest to load measuring
Rear side；
S3.4: if permanent fault equipment can not be found in step S3.3, fault point be step S3.2 in equipment or this set
For downstream closest to the fault detector rear side of load measuring, and it is in the front side of the fault detector of no alarm movement.
Compared with prior art, the beneficial effects of the present invention are:
1) this method is based on situational awareness techniques, based on the acquisition of comprehensive electric network state and power grid Dynamic Variation Analysis, improves
Power distribution network single node fault diagnosis accuracy rate, while being diagnosis core with accuracy and higher EMS, DMS data of reliability, with
Distribution transforming diagnostic data is auxiliary, is analyzed by upstream and downstream equipment fault linkage situation, each node device failure of comprehensive verification
Diagnostic accuracy improves the availability of intelligent diagnostics.
2) this method can relationship between comprehensive analysis Distribution Network Equipment failure, in the failure period automatically to belonging to the same thing
Therefore, all related datas of multiple terminals carry out intelligent classification.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 is system architecture diagram of the invention；
Fig. 3 is the method for the present invention Switch equipment diagnosis logic figure；
Fig. 4 is the chain instance graph of failure caused by short circuit；
Fig. 5 is fault trip successful reclosing current-jump figure；
Fig. 6 is fault trip, permanent fault current-jump figure.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
Below in conjunction with drawings and examples, the present invention is further elaborated.
Embodiment 1
Please refer to Fig. 1, Fig. 2, a kind of power distribution network multinode intelligent fault diagnosis method based on Situation Awareness, including it is following
Step:
S1: the static failure diagnosis of each node device of power distribution network is carried out based on Situation Awareness, by obtaining from electric system
Electrical network basic data, the verifying of comprehensive descision fault message determine result；
S2: fault moment equipment state variation diagnostic is carried out based on Situation Awareness, survey is recruited immediately to multinode faulty equipment
Fault moment electric current calculates jump information, analyzes state change, carries out correctness verification to single equipment fault diagnosis；
S3: based on relationship between Situation Awareness comprehensive analysis Distribution Network Equipment failure, according to power network topology to each node failure
Event correlation diagnosis is carried out, merges relevant fault, accuracy is mutually verified by upstream and downstream equipment fault.
Electric system described in step S1 includes EMS system, DMS system, metering automation system, generalized information system.
Electrical network basic data described in step S1 includes that electric network model information, equipment digital & analog signal information, power grid mode are converted
Business information；
Wherein electric network model packet enclosed tool control area, outlet switch, fault detector, distribution power transformation device, plant area, feeder line,
On-load switch, measurement, interval, branch line, breaker, topology；
Equipment digital & analog signal information includes switch state, protection signal, device current；
Power grid mode transformation service information temporarily turns including information listed in station, distribution scheduled outage information, distribution for letter
Breath.
Each node device static failure of power distribution network described in step S1, which diagnoses, includes:
1) no-voltage of entire station, bus loss of pressure directly acquire EMS main website judgement decompression telegram in reply result；
2) substation's outlet switch, feeder line do/branched breaker acquisition EMS, DMS main website protection act, switch changed position letter
Number carry out instantaneous/permanent fault diagnosis.Protection act mainly has zero sequence movement, quick-break movement, overcurrent movement, landing operation, guarantor
Shield acts, accident is total etc., and switch changed position information is reclosing, separating brake, switching signal.Protection act is diagnosed as fault type,
Switch changed position information is used as fail result analysis, and output protection acts class permanent fault if only sub-gate signal, if there is coincidence
Lock, a separating brake, the primary then output protection that closes a floodgate act successful reclosing class transient fault, if having reclosing, twice separating brake, primary
The then output protection that closes a floodgate acts unsuccessful reclosing class permanent fault.Transient fault recruits survey switch state to should be combined floodgate, permanent event
Barrier recruits survey switch state to should be separating brake；
3) feeder line it is dry/branch line on-load switch obtain DMS main website separating brake, combined floodgate and block signal carry out point, close, failure every
From diagnosis；
4) fault detector obtains DMS main station failure type and carries out fault actions diagnosis；
5) distribution transforming acquisition metering automation system stops extensive electric phase shortage alarm progress decompression, phase shortage telegram in reply diagnoses.
Step S2 the following steps are included:
S2.1: continuously taking 5 minutes real-time three-phase current curves before and after fault moment, calculates every 10 seconds each phase currents in front and back
Hop rate；Wherein
Maximum value in 30 hop rates is taken, is diagnosed as device current jump, electricity respectively if more than 20% or equal to 100%
Stream zero, is otherwise diagnosed as no jump；
S2.2: it examines and cannot pass through by verification, or without jump if faulty equipment is diagnosed as electric current zero.
Step S3 the following steps are included:
S3.1: switch fault state is automated according to upstream first, verification distribution transforming stops information of sending a telegram in reply, under permanent fault equipment
Allergic effect whole decompression is matched in trip, and transient fault device downstream stops to send a telegram in reply in short-term with allergic effect, upstream distribution automation equipment fault-free but
When distribution transforming has decompression phase shortage, substation's outlet switch or circuit breaker failure tripping operation information are released by distribution transforming is counter according to power network topology,
And it is supplemented in tree-shaped grouping；
S3.2: finding automatic Switching from root node with breadth traversal algorithm, disconnected comprising power transformation outlet switch or Heavenly Stems and Earthly Branches line
Road device；
S3.3: first permanent fault is found with extreme saturation algorithm using Switching automatic in step S3.2 as starting point
Automatic Switching or on-load switch or distribution transforming, fault point are the fault detector of the equipment or the device downstream closest to load measuring
Rear side；
S3.4: if permanent fault equipment can not be found in step S3.3, fault point be step S3.2 in equipment or this set
For downstream closest to the fault detector rear side of load measuring, and it is in the front side of the fault detector of no alarm movement.
Referring to FIG. 3, the fault diagnosis for Switch equipment mainly using protection act and opens displacement signal as base
Plinth, signal combine by way of judged,
A) fault type is quick-break if occurring 1 segment signal of quick-break or overcurrent in message；
B) referring concurrently to switch changed position signal:
If i. only once separating brake, no combined floodgate are determined as that quick-break acts；
If ii. once separating brake once closes a floodgate and reclosing acts, it is determined as that quick-break acts, successful reclosing；
If iii. having, separating brake once closes a floodgate twice and reclosing acts, and is determined as that quick-break acts, unsuccessful reclosing.
Other fault types are similarly.
Referring to FIG. 4, if failure is permanent fault caused by short circuit, the specific steps are as follows:
1) based on each node device static failure diagnosis of Situation Awareness power distribution network
A) whole station mistake station and bus loss of pressure alarm, no alarm signal in EMS system are obtained in real time continues Distribution Network Failure
Analysis
B) obtain in real time substation's outlet switch in EMS system, feeder line is dry in DMS system/branched breaker/load opens
Pass/fault detector/network distribution transformer coherent signal carries out the diagnosis of fault trip situation:
I. substation, which goes out to switch, does not find alarm signal, i.e. substation's outlet switch does not break down tripping, does not cause entirely
Line has a power failure；
No. ii.1 high village's A-wire/main line/N1 shaft tower _ fault detector signal in first base station/713 is as follows:
Alarm signal
713 high village's A-wire main line N1 tower trumpet side fault detectors _ 2015/09/07 09:36:16 of short action diagnosis
As a result it is " single short action "
No. iii.2 high village's A-wire/main line/1T1 breaker signal in first base station/713 is as follows:
Alarm signal
713 high village's A-wire main line #1 bar 1T1 breaker protection acts act 2015/09/07 09:35:27
713 high village's A-wire main line #1 bar 1T1 breaker overcurrent alarms act 2015/09/07 09:35:27
713 high village's A-wire main line #1 bar 1T1 breakers disconnect 2015/09/07 09:35:27
713 high village's A-wire main line #1 bar 1T1 breaker reclosing movements act 2015/09/07 09:35:35
713 high 2015/09/07 09:35:35 of village's A-wire main line #1 bar 1T1 breaker closing
Illustrate that diagnostic result is " overcurrent movement, successful reclosing " by Fig. 3, recruiting survey switch state in real time is "on" position, school
It tests and passes through.
No. iv.3 high village's A-wire/main line/N22 shaft tower _ fault detector signal in first base station/713 is as follows:
Alarm signal
713 high village's A-wire main line N22 tower trumpet side fault detectors _ 2015/09/07 09:36:14 of short action diagnosis
As a result it is " single short action "
V.4 number high village's A-wire/main line/32T1 on-load switch signal in first base station/713 is as follows:
Alarm signal
713 high village's A-wire main line #32 tower 32T1 on-load switches disconnect 2015/9/07 09:35:56
713 high village's A-wire main line #32 tower 32T1 on-load switches are closed 2015/9/07 09:36:03
713 high village's A-wire main line #32 tower 32T1 on-load switches are latched 2015/9/07 09:36:05 of feed motion
713 high village's A-wire main line #32 tower 32T1 on-load switches disconnect 2015/9/07 09:36:08
Diagnostic result is " segment fault has been isolated after on-load switch ", and recruiting survey switch state in real time is gate-dividing state, and verification is logical
It crosses.No. vi.5 713 high village's A-wires/Xin Da electrical apparatus factory/Z3031-0350 Xin Da electrical apparatus factory/01 Shunde District, Foshan City Beijiao Town newly reaches
Electrical Appliances Co., Ltd is as follows with varying signal:
Alarm signal
Power off time: 2015/09/07 09:35:00
Diagnostic result is " permanent fault "
Vii.6 fault detector fault-free action
No. viii.7 high village's A-wire/main line/38T2 on-load switch signal in first base station/713 is as follows:
Alarm signal
713 high 38 tower 38T2 on-load switches of village's A-wire main line disconnect 2015/9/07 09:35:56
It is " load that 713 high 38 tower 38T2 on-load switches of village's A-wire main line, which are closed 2015/9/07 09:35:58 diagnostic result,
Switch is without instantaneous divide-shut brake information-preserving "
No. ix.8 713 high village's A-wires/dedicated power distribution station of Xing Ao packing Co., Ltd., Foshan City #2/02 star Australia, Foshan City packaging
Co., Ltd is as follows with varying signal:
Alarm signal
Power off time: 2015/09/07 09:36:00
It sends a telegram in reply the time: 2015/09/07 09:36:00
Diagnostic result is " transient fault "
X. marketing system power failure pond is inquired, does not find this route scheduled outage work order.
2) it is based on Situation Awareness fault moment equipment state variation diagnostic, equipment fault moment state change mainly monitors electricity
Stream jump:
I. as shown in figure 5, No. 2 breaker maximum hop rates are 100%, state change meets fault trip successful reclosing electricity
Flow curve.
Ii. as shown in fig. 6, No. 4 on-load switch maximum hop rates are 100%, it is bent that state change meets permanent fault electric current
Line.
3) Distribution Network Equipment failure linkage analysis is carried out based on Situation Awareness
I. when a short circuit occurs, fault current causes upstream and downstream device action, and the fault detector of upstream 1,3 detects event
Hinder electric current, carries out short-circuit alarm；No. 2 breaker overcurrent protection movement movements, separating brakes, reclosing, closing success；No. 4 loads are opened
First separating brake is closed, after upstream circuit breaker reclosing success power transmission, attempts to close a floodgate, since short trouble does not exclude, load is opened
Sealed lock, separating brake are closed by Fault Isolation；No. 5 distribution transforming decompressions have a power failure；Other branch line load switch, distribution transforming are first on rear side of breaker
Have a power failure, sends a telegram in reply after breaker successful reclosing；Breaker upstream equipment no alarm.
Ii. failure in the first step is grouped with tree
Corresponding No. 7 corresponding No. 4 on-load switch permanent faults of No. 1.5 distribution transforming permanent faults, No. 8 distribution transforming transient faults instantaneous events
Barrier, verification pass through
2. finding No. 2 breakers since No. 1 fault detector, with this as the starting point；
No. 4 on-load switches of first permanent fault are found, No. 4 switch rear end fault-free pointers further reduce failure model
It encloses, so fault section is i.e. 4 to 5 segments on rear side of No. 4 on-load switches.
If failure is transient fault caused by short circuit, method and step are as follows:
1) based on each node device static failure diagnosis of Situation Awareness power distribution network
A) whole station mistake station and bus loss of pressure alarm, no alarm signal in EMS system are obtained in real time continues Distribution Network Failure
Analysis
B) obtain in real time substation's outlet switch in EMS system, feeder line is dry in DMS system/branched breaker/load opens
Pass/fault detector/network distribution transformer coherent signal carries out the diagnosis of fault trip situation:
I. substation, which goes out to switch, does not find alarm signal, i.e. substation's outlet switch does not break down tripping, does not cause entirely
Line has a power failure；
No. ii.1 high village's A-wire/main line/N1 shaft tower _ fault detector in first base station/713, diagnostic result are that " single short circuit is dynamic
Make "
No. iii.2 first high village's A-wire/main line/1T1 breaker in base station/713, diagnostic result be " overcurrent movement, be overlapped at
Function ", recruiting survey switch state in real time is "on" position, and verification passes through.
No. iv.3 first high village's A-wire/main line/N22 shaft tower _ fault detector diagnostic result in base station/713 is that " single short circuit is dynamic
Make "
No. 4 first high village's A-wire/main line/32T1 on-load switch diagnostic results in base station/713 are that " on-load switch is without information-preserving instantaneous
Divide-shut brake "
V.5 number 713 high village's A-wires/Xin Da electrical apparatus factory/Z3031-0350 Xin Da electrical apparatus factory/01 Shunde District, Foshan City Beijiao Town
Xin Da Electrical Appliances Co., Ltd distribution transforming diagnostic result is " transient fault "
Vi.6 fault detector fault-free action
No. vii.7 first high village's A-wire/main line/38T2 on-load switch diagnostic result in base station/713 is that " on-load switch is without information-preserving
Instantaneous divide-shut brake "
No. viii.8 713 high village's A-wires/dedicated power distribution station of Xing Ao packing Co., Ltd., Foshan City #2/02 star Australia, Foshan City packet
Filling Co., Ltd's distribution transforming diagnostic result is " transient fault "
Ix. marketing system power failure pond is inquired, does not find this route scheduled outage work order.
2) it is based on Situation Awareness fault moment equipment state variation diagnostic, equipment fault moment state change mainly monitors electricity
Stream jump:
I.2 number breaker maximum hop rate is 100%, and state change meets fault trip successful reclosing current curve.
Ii.4 on-load switch maximum hop rate is 100%, and electric current jump should gradually restore after being 0.
3) Distribution Network Equipment failure linkage analysis is carried out based on Situation Awareness
I. when a short circuit occurs, fault current causes upstream and downstream device action, and the fault detector of upstream 1,3 detects event
Hinder electric current, carries out short-circuit alarm；No. 2 breaker overcurrent protection movement movements, separating brakes, reclosing, closing success；No. 4 loads are opened
First separating brake is closed, after upstream circuit breaker reclosing success power transmission, attempts to close a floodgate, since short trouble has disappeared, on-load switch
It closes a floodgate；No. 5 distribution transforming decompressions have a power failure and send a telegram in reply；Other branch line load switch, distribution transforming first have a power failure on rear side of breaker, think highly of in open circuit
It sends a telegram in reply after synthesis function；Breaker upstream equipment no alarm.
Ii. failure in the first step is grouped with tree
1. the corresponding No. 4 on-load switch transient faults of No. 5 distribution transforming permanent faults, corresponding No. 7 of No. 8 distribution transforming transient faults are instantaneously
Failure, verification pass through
2. finding No. 2 breakers since No. 1 fault detector, with this as the starting point；
3. not finding permanent fault equipment；
It can only determine on rear side of No. 3 fault detectors of the fault section for short circuit alarm occurs, No. 6 failures not alerted
On front side of indicator, i.e. 3 to 5 segments.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (4)
1. a kind of power distribution network multinode intelligent fault diagnosis method based on Situation Awareness, which comprises the following steps:
S1: the static failure diagnosis of each node device of power distribution network is carried out based on Situation Awareness, by obtaining power grid from electric system
Basic data, the verifying of comprehensive descision fault message determine result；
S2: fault moment equipment state variation diagnostic is carried out based on Situation Awareness, multinode faulty equipment is recruited immediately and surveys failure
Moment electric current calculates jump information, analyzes state change, carries out correctness verification to single equipment fault diagnosis；
S3: based on relationship between Situation Awareness comprehensive analysis Distribution Network Equipment failure, each node failure is carried out according to power network topology
Event correlation diagnosis, merges relevant fault, mutually verifies accuracy by upstream and downstream equipment fault；
Wherein, electric system described in step S1 includes EMS system, DMS system, metering automation system, generalized information system；
Electrical network basic data described in step S1 includes electric network model information, equipment digital & analog signal information, power grid mode transformation service
Information；
Wherein electric network model packet enclosed tool control area, outlet switch, fault detector, distribution power transformation device, plant area, feeder line, load
Switch, measurement, interval, branch line, breaker, topology；
Equipment digital & analog signal information includes switch state, protection signal, device current；
Power grid mode transformation service information temporarily turns including information listed in station, distribution scheduled outage information, distribution for information.
2. a kind of power distribution network multinode intelligent fault diagnosis method based on Situation Awareness according to claim 1, special
Sign is that each node device static failure diagnosis of power distribution network described in step S1 includes:
1) no-voltage of entire station, bus loss of pressure directly acquire EMS main website judgement decompression telegram in reply result；
2) substation's outlet switch, feeder line it is dry/branched breaker obtain EMS, DMS main website protection act, switch changed position signal into
Instantaneous/permanent fault of going diagnoses；Protection act mainly has zero sequence movement, quick-break movement, overcurrent movement, landing operation, protection dynamic
Make, accident summation, switch changed position information is reclosing, separating brake, switching signal；Protection act is diagnosed as fault type, switch
Displacement information is used as fail result analysis, and output protection acts class permanent fault if only sub-gate signal, if having reclosing, one
Secondary separating brake, the primary then output protection that closes a floodgate act successful reclosing class transient fault, if having reclosing, twice separating brake, primary combined floodgate
Then output protection acts unsuccessful reclosing class permanent fault；Transient fault recruits survey switch state to should be combined floodgate, and permanent fault, which is recruited, to be surveyed
Switch state should be separating brake；
3) feeder line it is dry/branch line on-load switch obtains that DMS main website separating brake, combined floodgate and block signal are carried out point, closed, Fault Isolation is examined
It is disconnected；
4) fault detector obtains DMS main station failure type and carries out fault actions diagnosis；
5) distribution transforming acquisition metering automation system stops telegram in reply phase shortage alarm progress decompression, phase shortage telegram in reply diagnoses.
3. a kind of power distribution network multinode intelligent fault diagnosis method based on Situation Awareness according to claim 1, special
Sign is, step S2 the following steps are included:
S2.1: continuously taking 5 minutes real-time three-phase current curves before and after fault moment, calculates the jump every 10 seconds each phase currents in front and back
Variability；Wherein
Maximum value in 30 hop rates is taken, is diagnosed as device current jump respectively if more than 20% or equal to 100%, electric current is returned
Zero, otherwise it is diagnosed as no jump；
S2.2: it examines and cannot pass through by verification, or without jump if faulty equipment is diagnosed as electric current zero.
4. a kind of power distribution network multinode intelligent fault diagnosis method based on Situation Awareness according to claim 1, special
Sign is, step S3 the following steps are included:
S3.1: automating switch fault state according to upstream first, and verification distribution transforming stops information of sending a telegram in reply, and permanent fault device downstream is matched
Allergic effect whole decompression, transient fault device downstream stop to send a telegram in reply in short-term with allergic effect, upstream distribution automation equipment fault-free but distribution transforming
When having decompression phase shortage, substation's outlet switch or circuit breaker failure tripping operation information are released by distribution transforming is counter according to power network topology, and mend
It is charged in tree-shaped grouping；
S3.2: automatic Switching is found from root node with breadth traversal algorithm, includes power transformation outlet switch or dry branched breaker；
S3.3: the automatic of first permanent fault is found with extreme saturation algorithm using Switching automatic in step S3.2 as starting point
Switching or on-load switch or distribution transforming, fault point be first permanent fault automatic Switching or on-load switch or distribution transforming or
The downstream of the automatic Switching or on-load switch of first permanent fault or distribution transforming is closest on rear side of the fault detector of load side；
S3.4: if can not find permanent fault equipment in step S3.3, fault point is for Switching automatic in step S3.2 or certainly
Dynamic Switching downstream is closest on rear side of the fault detector of load side, and before the fault detector in no alarm movement
Side.
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| CN110544176B (en) * | 2019-08-12 | 2021-09-21 | 广东电网有限责任公司 | Method for switching failure of distribution transformer voltage loss information backward-pushing switch of OCS (online charging system) master station system |
| CN110568275B (en) * | 2019-09-17 | 2022-02-01 | 国网福建省电力有限公司安溪县供电公司 | Open-phase fault studying and judging method and system based on public and private power distribution network variable data |
| CN111415077A (en) * | 2020-03-17 | 2020-07-14 | 内蒙古电力（集团）有限责任公司乌兰察布电业局 | Intelligent distribution network fault diagnosis positioning method |
| CN112162209B (en) * | 2020-09-14 | 2022-12-30 | 江苏中烟工业有限责任公司 | Driving power supply tripping diagnosis method of C800-BV packaging machine |
| CN113452142B (en) * | 2021-07-01 | 2024-01-23 | 国网河南省电力公司电力科学研究院 | Remote monitoring and restarting device and method for automatic equipment at station end |
| CN114221436B (en) * | 2021-11-20 | 2023-09-12 | 云南电网有限责任公司昆明供电局 | Intelligent alarm method and system based on distribution network operation management system |
| CN115184738B (en) * | 2022-09-08 | 2023-01-24 | 北京智芯微电子科技有限公司 | Power distribution network fault positioning system, positioning method and computer readable medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565572A (en) * | 2011-12-04 | 2012-07-11 | 江苏省电力公司南京供电公司 | Platform and method for judging fault of match power grid |
| CN103592567A (en) * | 2013-10-23 | 2014-02-19 | 广东电网公司佛山供电局 | Grid fault locating system and method based on multisystem information integration |
| CN103941158A (en) * | 2014-04-17 | 2014-07-23 | 国家电网公司 | Power distribution network fault diagnosis system and method based on multi-source information |
| KR101501118B1 (en) * | 2014-04-08 | 2015-03-19 | 아주대학교산학협력단 | Diagnosis apparatus and method of open switch fault of back to back converter of npc type topology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048517A (en) * | 2015-08-19 | 2015-11-11 | 国家电网公司 | Multistage energy coordination control system |
| CN106846174A (en) * | 2017-01-10 | 2017-06-13 | 中国南方电网有限责任公司电网技术研究中心 | Method and device for power distribution network situation perception based on data fusion |
-
2017
- 2017-11-20 CN CN201711160736.5A patent/CN108011358B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565572A (en) * | 2011-12-04 | 2012-07-11 | 江苏省电力公司南京供电公司 | Platform and method for judging fault of match power grid |
| CN103592567A (en) * | 2013-10-23 | 2014-02-19 | 广东电网公司佛山供电局 | Grid fault locating system and method based on multisystem information integration |
| KR101501118B1 (en) * | 2014-04-08 | 2015-03-19 | 아주대학교산학협력단 | Diagnosis apparatus and method of open switch fault of back to back converter of npc type topology |
| CN103941158A (en) * | 2014-04-17 | 2014-07-23 | 国家电网公司 | Power distribution network fault diagnosis system and method based on multi-source information |
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