CN109818335A - A kind of protection system exception event diagnosis system and method based on failure tree analysis (FTA) - Google Patents
A kind of protection system exception event diagnosis system and method based on failure tree analysis (FTA) Download PDFInfo
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Abstract
The present invention relates to a kind of protection system exception event diagnosis system and method based on failure tree analysis (FTA); anomalous event diagnostic system includes: human-machine interface module: obtaining SCD and SPCD file and parsing obtains protection system RBD figure, RBD figure includes the primary element in protection system；Event constructs module: the anomalous event defect rank of primary element assesses rule in building protection system RBD figure；Network communication module: the real-time packet information of protection system is obtained；State estimation module: real-time packet information is matched with protection system RBD figure, constitutes anomalous event data collection；Defect diagonsis module: establishing the anomalous event model based on Fault Tree Analysis, carries out layer-by-layer diagnostic assessment to two layers of anomalous event model according to anomalous event data collection and anomalous event defect rank assessment rule, determines protection system defect grade.Compared with prior art, the present invention realizes that anomalous event diagnoses automatically, helps to improve power system power supply reliability.
Description
Technical field
The present invention relates to a kind of protection system exception event diagnosis system and methods, are based on fault tree more particularly, to one kind
The protection system exception event diagnosis system and method for analysis.
Background technique
Intelligent substation is based on IEC61850 system, describes secondary system of intelligent substation using SCD system configuration utility,
Protection system covers combining unit, intelligent terminal, protective device and process layer switch etc., is sent by SV, GOOSE, MMS message
System real-time running state is protected out.Therefore, how intelligent substation effectively recognizes the anomalous event of protection system, for protection system
The repair based on condition of component of system provides decision-making foundation, it appears very necessary.At this stage for the anomalous event of intelligent substation protection system
Identification rely primarily on manually, time-consuming, low efficiency.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of protection system exceptions
Event diagnosis system and method.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of protection system exception event diagnosis system based on failure tree analysis (FTA), anomalous event diagnostic system include:
Human-machine interface module: obtaining SCD and SPCD file and parsing obtains protection system RBD figure, and the RBD figure includes
Primary element in protection system；
Event constructs module: the anomalous event defect rank of primary element assesses rule in building protection system RBD figure；
Network communication module: the real-time packet information of protection system is obtained；
State estimation module: real-time packet information is matched with protection system RBD figure, is established given by real-time packet information
Anomalous event and primary element corresponding relationship, constitute anomalous event data collection；
Defect diagonsis module: two layers of anomalous event model based on Fault Tree Analysis is established, according to abnormal events
Two layers of anomalous event model is carried out according to the anomalous event defect rank assessment rule determined in collection and event building module layer-by-layer
Diagnostic assessment determines protection system defect grade.
Network communication module connection SV interchanger, GOOSE interchanger and the MMS interchanger, the real-time packet
Information includes SV real-time packet, GOOSE real-time packet and MMS real-time packet.
Two layers of anomalous event model first layer is protection system link anomalous event layer, and the second layer is primary element
Anomalous event layer, the protection system link anomalous event layer includes multiple protection system link anomalous events, each protection
It include multiple primary element anomalous events under system link anomalous event, it is basic described in all primary element anomalous events compositions
Element anomalous event layer.
The protection system link anomalous event layer includes 3 protection system link anomalous events, and it is defeated to be respectively as follows: exchange
Enter link anomalous event, IED device link anomalous event and data communication links anomalous event.
Primary element anomalous event under the exchange input element anomalous event includes: SV link abnormality alarming, adopts
It is abnormal with the out-of-limit exception of the deviation of homologous Evaluation, the out-of-limit exception of current difference of protective device, the voltage input of protective device.
Primary element anomalous event under the IED device link anomalous event includes: that combining unit is abnormal, protects dress
It is abnormal to set exception, intelligent terminal exception, interchanger.
Primary element anomalous event under the data communication link anomalous event includes: protection system direct connection or net connection
It is abnormal that optical cable is abnormal, GOOSE link is abnormal, protection sends light intensity.
A kind of protection system exception event diagnosis method based on failure tree analysis (FTA), this method comprises the following steps:
(1) SCD and SPCD file is obtained, parsing obtains protection system RBD figure, and the RBD figure includes in protection system
Primary element；
(2) the anomalous event defect rank for constructing primary element in protection system RBD figure assesses rule；
(3) the real-time packet information of protection system is obtained, the real-time packet information includes SV real-time packet, GOOSE
Real-time packet and MMS real-time packet；
(4) real-time packet information is matched with protection system RBD figure, establishes anomalous event given by real-time packet information
With the corresponding relationship of primary element, anomalous event data collection is constituted；
(5) two layers of anomalous event model of protection system is constructed, first layer is protection system link anomalous event layer, the second layer
For primary element anomalous event layer；
(6) right according to the anomalous event defect rank assessment rule determined in anomalous event data collection and event building module
Two layers of anomalous event model carries out layer-by-layer diagnostic assessment, determines protection system defect grade.
Protection system link anomalous event layer includes multiple protection system link anomalous events, each protection in step (5)
It include multiple primary element anomalous events under system link anomalous event, it is basic described in all primary element anomalous events compositions
Element anomalous event layer.
Step (6) specifically: firstly, commenting each primary element anomalous event in primary element anomalous event layer
Estimate: anomalous event data collection being compareed with primary element anomalous event, it is determined whether there are primary element anomalous events, if it exists
Determine the defect rank of primary element anomalous event；
Secondly, assessing each protection system link anomalous event in protection system link anomalous event layer: will
Highest defect of defect rank etc. in corresponding primary element anomalous event under protection system link anomalous event to be assessed
Defect rank of the grade as protection system link anomalous event to be assessed；
Finally, determining protection system defect grade: defect rank in all protection system link anomalous events is highest
Defect rank is as protection system defect grade；
The defect rank height is directly proportional to defect severity.
Compared with prior art, the present invention has the advantage that
(1) it the present invention is based on two layers of anomalous event model of Fault Tree Analysis, is determined according to real-time packet information different
Normal event data collection, while the anomalous event that anomalous event data are concentrated being compared and being commented with two layers of anomalous event model
Estimate, determine protection system defect grade, changes intelligent station protection system defect and define and need a large amount of dispersions of artificial comprehensive analysis
The mode of information realizes that protection system defect diagnoses automatically, protects the repair based on condition of component of system to provide technology for intelligent substation
Basis helps to improve the reliability of power system power supply；
(2) present invention establishes two layers of anomalous event model, from the primary element anomalous event of bottom to the protection on upper layer
System link anomalous event, it is clear, more conducively protect the fast and reliable diagnosis of system exception event.
Detailed description of the invention
Fig. 1 is the structural block diagram of the protection system exception event diagnosis system the present invention is based on failure tree analysis (FTA)；
Fig. 2 is the structural schematic diagram of two layers of anomalous event model of the invention；
Fig. 3 is the flow diagram of the protection system exception event diagnosis method the present invention is based on failure tree analysis (FTA).
In figure, 1 is human-machine interface module, and 2 construct module for event, and 3 be network communication module, and 4 be state estimation module,
5 be defect diagonsis module, and 6 be SV interchanger, and 7 be GOOSE interchanger, and 8 be MMS interchanger.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1, a kind of protection system exception event diagnosis system based on failure tree analysis (FTA), protection system refer to:
With primary equipment (route, transformer, bus etc.) for protected object, for the isolation when protected primary equipment breaks down
The control system of fault point, protection system exception event diagnosis system include human-machine interface module 1, event building module 2, network
Communication module 3, state estimation module 4 and defect diagonsis module 5.
Specifically:
(A) human-machine interface module 1: obtain SCD and SPCD file and parse obtain protection system RBD figure (protection system can
By property block diagram), RBD figure includes the primary element in protection system；Wherein, protection system RBD figure refers to: with point of structure-oriented
Analysis method describes the physical connection of each unit and function logic relational graph in protection system, constructs using physical equipment as the guarantor of object
Protecting system working principle diagram, such as " combining unit+connection optical cable+protective device+connection optical cable+process layer switch+connection optical cable
+ intelligent terminal " etc.；Primary element includes: to constitute the protection emic separate physical form equipment of system logic, is such as merged single
Member, protective device, process layer switch, intelligent terminal, connection optical cable etc..
(B) event constructs module 2: the anomalous event defect rank of primary element assesses rule in building protection system RBD figure
Then, the module is according to state's net (adjusting 4) 527-2014 " State Grid Corporation of China's relay protection device defect management method ", for basic
The anomalous event content of element carries out defect rank definition, and then forms anomalous event defect rank assessment rule.Defect definition
Principle refers to: 1. general defect, and protection system has abnormal phenomenon, but does not influence defencive function realization, such as protects clock synchronization abnormal, mould
Analog quantity is out-of-limit；2. major defect, part defencive function is impacted, but protection can also continue to run, such as pilot protection channel alarm
Deng；3. critical defect, protection are unable to operate normally, need to stop using as a servant at once, such as CPU abnormality alarming.
(C) network communication module 3: network communication module 3 connects SV interchanger 6, GOOSE interchanger 7 and MMS interchanger 8,
Network communication module 3 obtains the real-time packet information of protection system, and real-time packet information includes the guarantor based on IEC61850 standard
SV real-time packet, GOOSE real-time packet and the MMS real-time packet for the reflection protection operating status that protecting system is issued, such as message
Interruption, the alarm of device hardware anomalies, software alarm etc..SV real-time packet refers to: the message of description electric current, voltage analog；
GOOSE real-time packet refers to: connection locking, tripping control command between description IED reflect the message of signal sequence feature；MMS
Real-time packet refers to: taking Publish-subscribe mechanism, the message of description alarm, action event etc..
(D) state estimation module 4: real-time packet information is matched with protection system RBD figure, establishes real-time packet information institute
The corresponding relationship of the anomalous event and primary element that provide constitutes anomalous event data collection.
(E) defect diagonsis module 5: two layers of anomalous event model based on Fault Tree Analysis is established, according to abnormal thing
The anomalous event defect rank assessment rule determined in part data set and event building module 2 carries out two layers of anomalous event model
Layer-by-layer diagnostic assessment determines protection system defect grade.
Two layers of anomalous event model first layer is protection system link anomalous event layer, and the second layer is primary element exception thing
Part layer, protection system link anomalous event layer includes multiple protection system link anomalous events, and each protection system link is abnormal
It include multiple primary element anomalous events under event, all primary element anomalous events constitute primary element anomalous event layer.Two
Layer anomalous event model is as shown in Figure 2.
Protection system link anomalous event layer includes 3 protection system link anomalous events, respectively (1) exchange input ring
Anomalous event is saved, refers to the exchange input of protection system, covers SV link etc.；(2) IED device link anomalous event, referring to has solely
The intelligent electronic device of vertical outputting alarm signal, as combining unit, protective device, intelligent terminal, process layer switch are sent out
Abnormality alarming event and protective device send out temperature, supply voltage out-of-limit event etc.；(3) data communication link anomalous event,
Refer to anomalous event and protective device that the direct-connected of characterization protection system control loop, net connection optical cable on-off, GOOSE link are sent out
Light intensity out-of-limit event etc.；According to Fault Tree Analysis, protection system exception event is made of two layers of event model.
Specifically, exchanging the primary element anomalous event under input element anomalous event includes: that (1) SV link is accused extremely
It is alert；(2) telemetering of protective device is passed through such as route protection and bus protection using the out-of-limit exception of deviation of homologous Evaluation
Amount compares, this general deviation is set manually；(3) the out-of-limit exception of the current difference of protective device, general value are set manually；
(4) voltage input of protective device is abnormal.
Primary element anomalous event under IED device link anomalous event includes: that combining unit is abnormal, protective device is different
Often, intelligent terminal is abnormal, interchanger is abnormal.
Primary element anomalous event under data communication link anomalous event includes: that protection system direct connection or net connection optical cable are different
Often, GOOSE link is abnormal, protection transmission light intensity is abnormal etc..
As shown in figure 3, a kind of protection system exception event diagnosis method based on failure tree analysis (FTA), this method includes as follows
Step:
(1) SCD and SPCD file is obtained, parsing obtains protection system RBD figure, and RBD figure includes basic in protection system
Element；
(2) the anomalous event defect rank for constructing primary element in protection system RBD figure assesses rule；
(3) the real-time packet information of protection system is obtained, real-time packet information includes that SV real-time packet, GOOSE are reported in real time
Text and MMS real-time packet；
(4) real-time packet information is matched with protection system RBD figure, establishes anomalous event given by real-time packet information
With the corresponding relationship of primary element, anomalous event data collection is constituted；
(5) two layers of anomalous event model of protection system is constructed, first layer is protection system link anomalous event layer, the second layer
For primary element anomalous event layer；
(6) rule is assessed according to the anomalous event defect rank determined in anomalous event data collection and event building module 2
Layer-by-layer diagnostic assessment is carried out to two layers of anomalous event model, determines protection system defect grade.
Protection system link anomalous event layer includes multiple protection system link anomalous events, each protection in step (5)
It include multiple primary element anomalous events under system link anomalous event, it is different that all primary element anomalous events constitute primary element
Normal event layers.
Step (6) specifically: firstly, commenting each primary element anomalous event in primary element anomalous event layer
Estimate: anomalous event data collection being compareed with primary element anomalous event, it is determined whether there are primary element anomalous events, if it exists
Determine the defect rank of primary element anomalous event；
Secondly, assessing each protection system link anomalous event in protection system link anomalous event layer: will
Highest defect of defect rank etc. in corresponding primary element anomalous event under protection system link anomalous event to be assessed
Defect rank of the grade as protection system link anomalous event to be assessed；
Finally, determining protection system defect grade: defect rank in all protection system link anomalous events is highest
Defect rank is as protection system defect grade；
Defect rank height is directly proportional to defect severity.
Claims (10)
1. a kind of protection system exception event diagnosis system based on failure tree analysis (FTA), which is characterized in that anomalous event diagnosis system
System includes:
Human-machine interface module (1): obtaining SCD and SPCD file and parsing obtains protection system RBD figure, and the RBD figure includes
Primary element in protection system；
Event constructs module (2): the anomalous event defect rank of primary element assesses rule in building protection system RBD figure；
Network communication module (3): the real-time packet information of protection system is obtained；
State estimation module (4): real-time packet information is matched with protection system RBD figure, is established given by real-time packet information
Anomalous event and primary element corresponding relationship, constitute anomalous event data collection；
Defect diagonsis module (5): two layers of anomalous event model based on Fault Tree Analysis is established, according to anomalous event data
The anomalous event defect rank assessment rule determined in collection and event building module (2) carries out two layers of anomalous event model layer-by-layer
Diagnostic assessment determines protection system defect grade.
2. a kind of protection system exception event diagnosis system based on failure tree analysis (FTA) according to claim 1, feature
It is, the network communication module (3) connects SV interchanger (6), GOOSE interchanger (7) and MMS interchanger (8), described
Real-time packet information includes SV real-time packet, GOOSE real-time packet and MMS real-time packet.
3. a kind of protection system exception event diagnosis system based on failure tree analysis (FTA) according to claim 1, feature
It is, two layers of anomalous event model first layer is protection system link anomalous event layer, and the second layer is that primary element is different
Normal event layers, the protection system link anomalous event layer includes multiple protection system link anomalous events, each protection system
It include multiple primary element anomalous events under link anomalous event of uniting, all primary element anomalous events constitute the member substantially
Part anomalous event layer.
4. a kind of protection system exception event diagnosis system based on failure tree analysis (FTA) according to claim 3, feature
It is, the protection system link anomalous event layer includes 3 protection system link anomalous events, is respectively as follows: exchange input
Link anomalous event, IED device link anomalous event and data communication links anomalous event.
5. a kind of protection system exception event diagnosis system based on failure tree analysis (FTA) according to claim 4, feature
It is, the primary element anomalous event under the exchange input element anomalous event includes: SV link abnormality alarming, using same
The out-of-limit exception of the deviation of source Evaluation, the out-of-limit exception of current difference of protective device, the voltage input of protective device are abnormal.
6. a kind of protection system exception event diagnosis system based on failure tree analysis (FTA) according to claim 4, feature
It is, the primary element anomalous event under the IED device link anomalous event includes: combining unit exception, protective device
Abnormal, intelligent terminal exception, interchanger are abnormal.
7. a kind of protection system exception event diagnosis system based on failure tree analysis (FTA) according to claim 4, feature
It is, the primary element anomalous event under the data communication link anomalous event includes: protection system direct connection or net connection light
It is abnormal that cable is abnormal, GOOSE link is abnormal, protection sends light intensity.
8. a kind of protection system exception event diagnosis method based on failure tree analysis (FTA), which is characterized in that this method includes as follows
Step:
(1) SCD and SPCD file is obtained, parsing obtains protection system RBD figure, and the RBD figure includes the base in protection system
This element；
(2) the anomalous event defect rank for constructing primary element in protection system RBD figure assesses rule；
(3) the real-time packet information of protection system is obtained, the real-time packet information includes SV real-time packet, GOOSE real-time
Message and MMS real-time packet；
(4) real-time packet information is matched with protection system RBD figure, establishes anomalous event given by real-time packet information and base
The corresponding relationship of this element constitutes anomalous event data collection；
(5) two layers of anomalous event model of protection system is constructed, first layer is protection system link anomalous event layer, and the second layer is base
This element anomalous event layer；
(6) according to the anomalous event defect rank assessment rule determined in anomalous event data collection and event building module to two layers
Anomalous event model carries out layer-by-layer diagnostic assessment, determines protection system defect grade.
9. a kind of protection system exception event diagnosis method based on failure tree analysis (FTA) according to claim 8, feature
It is, protection system link anomalous event layer includes multiple protection system link anomalous events, each protection system in step (5)
It include multiple primary element anomalous events under link anomalous event, all primary element anomalous events constitute the primary element
Anomalous event layer.
10. a kind of protection system exception event diagnosis method based on failure tree analysis (FTA) according to claim 9, feature
It is, step (6) specifically: firstly, assessing each primary element anomalous event in primary element anomalous event layer:
Anomalous event data collection is compareed with primary element anomalous event, it is determined whether there are primary element anomalous events, if it exists then
Determine the defect rank of primary element anomalous event；
Secondly, assessing each protection system link anomalous event in protection system link anomalous event layer: will be to be evaluated
The highest defect rank of defect rank is made in corresponding primary element anomalous event under the protection system link anomalous event estimated
For the defect rank of protection system link anomalous event to be assessed；
Finally, determining protection system defect grade: by the highest defect of defect rank in all protection system link anomalous events
Grade is as protection system defect grade；
The defect rank height is directly proportional to defect severity.
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Effective date of registration: 20221222 Address after: Room 401, Floor 4, Building A, No. 3, Gaoxin Avenue, Shangjie Town, Minhou County, Fuzhou City, Fujian Province, 350108 Patentee after: Fujian Yongfu Digital Energy Technology Co.,Ltd. Address before: 201204 first floor, No. 10, Lane 299, Bisheng Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee before: SHANGHAI YIHAO INFORMATION TECHNOLOGY Co.,Ltd. |