CN103117885B - The abnormal automatic detection method of intelligent distribution network terminal called based on DES theory - Google Patents
The abnormal automatic detection method of intelligent distribution network terminal called based on DES theory Download PDFInfo
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- CN103117885B CN103117885B CN201210524287.9A CN201210524287A CN103117885B CN 103117885 B CN103117885 B CN 103117885B CN 201210524287 A CN201210524287 A CN 201210524287A CN 103117885 B CN103117885 B CN 103117885B
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Abstract
The invention belongs to electronic information technical field, relate to a kind of automatic detection to intelligent distribution network terminal device communication system fault and inductive method.The method uses DES theoretical, and according to normal communication process, design communication event set E, system mode set X, set up state transition function f in normal flow and event sets Γ can occur current state.Using behavior unknown in communication process as the detection of a target, increase the playback of the pressure after non-back message event η and unknown message event γ, and connect between behavior set and state set, under the interactive operation behavior of expert is auxiliary, verify the character of mistake further, form complete expert database, and automatically can generate detection form and incorrect details form (system configuration is shown in Figure of abstract).By the inventive method, can contrast the equipment behavior of different vendor, the expert system obtained when each power administration carries out intelligent power distribution network construction, can avoid the dependence to professional and technical personnel, by simple training, can complete whole work.<!--1-->
Description
Technical field
The invention belongs to the application of the network communications technology at intelligent distribution network, relate in intelligent power distribution network construction and maintenance process, the method for testing of IEC-60870 communication standard test and means.
Background technology
Intelligent power distribution net is the pith of intelligent grid, based on a rack and equipment, take electrical power distribution automatization system as core, comprehensive utilization communication, by the information integerated with related application system, realize the comprehensive monitoring to distribution system and control.
Communication system builds the basis of intelligent power distribution automated system.Power distribution automation will by reliable means of communication, the control command of control centre is issued to each actuator or terminal unit, the various information that each remote monitoring unit gathers are uploaded to control centre, to realize the various functions (namely realizing the Inspect and control to terminal unit) of intelligent power distribution net simultaneously.
Along with the process of intelligent power distribution network construction, each terminal equipment manufacturer to start the remote communication protocol (IEC60870-5-101/104) that uses in power transmission network one-level to power distribution network expansion, attempts completing monitoring to the equipment state such as transformer, switch in power distribution network one-level.
The use contrast situation of 104 communication protocols on transmission and disttrbution is as shown in the table:
Transmission of electricity telecontrol system is normally built by government investment.Because power transmission network electric pressure is high, website is few, is responsible for so telecontrol equipment and management software are all given electric equipment vendors by grid company usually.The website of power transmission network is few, so the probability broken down is little, so need the situation of more exchange device just few.
Electrical power distribution automatization system has the electric equipments such as numerous distribution transformings, Yong Hubian, case change, switching station, distribution transformer, on-pole switch, block switch, parallel capacitor, user's electric energy meter and important load, website generally has hundreds and thousands of even up to ten thousand more than, Regional Distribution is wide, kind is many, running status is complicated, natural environment is severe, and will carry out real-time inspection and control to these equipment just needs to install the terminal equipments such as a large amount of RTU, FTU, DTU, TTU.
From foregoing description, intelligent distribution network terminal equipment is many, and investment construction and manager more wish the distribution terminal equipment adopting multiple producer, by introducing competition, avoid monopolization, are conducive to the maintenance of equipment; When terminal equipment changed by needs, competitive bidding can be carried out equally to the terminal equipment of the producer selecting cost performance high, thus reduce the cost of plant maintenance, maintenance, renewal.
The application of IEC60870-5-101/104 from power transmission network to the expansion of power distribution network one-level in recent years along with the continuous propelling of intelligent power distribution network construction occurs.For ensureing after switchgear, whole system communication still has reliability, accuracy, in bid with in safeguarding in the future, must must guarantee that the communication message of each terminal equipment is accurate, complete function, system parameters can be checked, follow 104 communication protocols completely.The outstanding problem of current existence two aspects:
1., due to the expansion of market capacity, constantly have enterprise to enter this field, to the degree of understanding of communication protocol and digestion power different, cause existing product to there is defect in communication;
2., in each place power administration process of construction, responsible institution obviously lacks the professional and technical personnel being familiar with relevant stipulations, is difficult to bear the Detection task to each manufacturer terminal in the short time.
In whole process, what construction investment side needed to determine communication protocol can arrangement, and is supplied to the enterprise participating in competitive bidding, then to the testing equipment of enterprise.Owing to there is the problem of above-mentioned two aspects, often delay operating rate.
Summary of the invention
For increasing work efficiency, the present invention is according to the experience summed up in intelligent power distribution network construction work, according to the basic demand of artificial intelligence system development technique, introduce discrete event system (DES) theoretical, analysis is disassembled to whole test process, in conjunction with software development technique, design and be a set ofly applicable to the intelligent automatic test macro of IEC60870-5-101/104 communications protocol when intelligent distribution network is applied.
System can according to the requirements set content measurement of investment construction side or operation maintenance side and entry, start the flow process of DES setting, according to different response events, the manually-operated all processes of simulation test expert, Auto-writing test report, and provide test result.
Accompanying drawing explanation
Fig. 1 is the flow chart of the 60870-5-104 normal communication process of institute of the present invention foundation;
Embodiment
Concrete steps are:
1) analyze the flow process of normal communication process, form event sets E={e
1, e
2..., e
n;
2) according to reciprocal process, statement library L={l is formed
0, l
2..., l
m, the reciprocal process ranked in this set is system normal communication process.A right-on test process l should be arranged in its Kleene closure L*;
3) normal communication state X={x in IEC60870-5-104 communications protocol is analyzed
1, x
2..., x
k;
4) according to normal interaction process, transfer function F is determined;
5) above process forms DES system G=(X, E, F, Γ, an x
0, X
m), wherein Γ: X → 2
e, be all elements x under state X
i(i=1,2 ... the set of transferable state k).。
6), after completing normal communication analysis, in event sets E, the playback of the pressure after non-back message event η and unknown message event γ is increased;
7) Γ is expanded in the present system, occurred event under each state is all event sets, such as under halted state, send out other message and see whether substation can reply, such as, Possible event under Stoped state will be updated to: Γ (Xstoped)={ U form message, E ' }, other message that E ' increases for test needs
8) unknown message event/abnormality detection associate management mechanism is set: after a) event do not had in E being detected, carry out feature record to unknown event, form new events e
γ 1, and be associated with abnormality and submit expert's interactive interface to, after expert provides suggestion, can state expand be carried out; B) event is errors excepted responded, and the statement l that can find out now does not belong to Kleene closure L*, is recorded in abnormality management;
9) after testing process completes automatically, the process l that this detects is analyzed at Kleene closure L*, automatically generate according to analysis result and detect form and incorrect details form.
Technique effect of the present invention is: along with the end of pilot project, the construction of intelligent distribution network is about to spread overwide areas at home, computer communication is exactly the Additional Specialty configuration of each power administration originally, has the technical staff understood in depth rare especially to IEC60870-5-104 communications protocol.Therefore in the urgent need to there being auxiliary system to help through engineering construction.Simultaneously the present invention introduces the communication abnormality that DES system completes IEC60870-5-104 communications protocol and finds out, and has application value to the job family of the communications protocol such as IEC60870-5-103, IEC61850.
Claims (1)
1. intelligent power distribution network termination IEC60870-5-104 communication protocol communication abnormality automatic detection method, comprises the steps:
1) analyze the flow process of normal communication process, form event sets
e=
e 1 ,
e 2...,
e n ;
2) according to reciprocal process, statement library is formed
l=
l 1 ,
l 2...,
l m , statement
l i be
emiddle event
e i particular combination, the reciprocal process ranked in this set is system normal communication process, a right-on test process
lits Kleene closure should be positioned at
l * in;
3) normal communication state in IEC60870-5-104 communications protocol is analyzed
x=
x 1 ,
x 2...,
x k ;
4) according to normal interaction process, transfer function F is determined;
5) above process form a discrete-time system DES:G=(X, E, F, Γ,
x- 0, X
m), wherein:
x 0for initial condition, X
mfor end-state, Γ: X → 2
e, be all elements under state X
x i (
i=1,2,
k) the set of transferable state;
6) after completing normal communication analysis, at event sets
epressure playback event after the non-back message of middle increase
ηand unknown message event
γ;
7) expand Γ in the present system, the occurred event under each state is expanded to all event sets;
8) unknown message event and abnormality detection associate management mechanism are set: after a) event do not had in E being detected, carry out feature record to unknown event, form new events
e γ1
, and be associated with abnormality and submit expert's interactive interface to, after expert provides suggestion, can state expand be carried out; B) event is errors excepted responded, and can find out statement now
ldo not belong to Kleene closure
l * , be recorded in abnormality management;
9) after testing process completes automatically, to the process that this detects
lin Kleene closure
l * analyze, automatically generate according to analysis result and detect form and incorrect details form.
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CN103117885B true CN103117885B (en) | 2016-04-13 |
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CN105281991A (en) * | 2015-09-10 | 2016-01-27 | 东南大学 | Distribution network terminal self-description method based on IEC 60870-5-104 protocol expansion |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201673233U (en) * | 2010-05-26 | 2010-12-15 | 西安兴汇电力科技有限公司 | Distribution network line fault judger |
CN102738777A (en) * | 2012-06-20 | 2012-10-17 | 广西电网公司电力科学研究院 | Rapid distribution network fault self-recovery method based on generic object oriented substation event (GOOSE) message |
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GB0511361D0 (en) * | 2005-06-03 | 2005-07-13 | Responsiveload Ltd | Grid responsive control device |
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---|---|---|---|---|
CN201673233U (en) * | 2010-05-26 | 2010-12-15 | 西安兴汇电力科技有限公司 | Distribution network line fault judger |
CN102738777A (en) * | 2012-06-20 | 2012-10-17 | 广西电网公司电力科学研究院 | Rapid distribution network fault self-recovery method based on generic object oriented substation event (GOOSE) message |
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