CN107016503A - The real-time stipulations of CIM topology and modification method based on fuzzy reasoning - Google Patents
The real-time stipulations of CIM topology and modification method based on fuzzy reasoning Download PDFInfo
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Abstract
The invention discloses a kind of real-time stipulations of CIM topology based on fuzzy reasoning and modification method, including：Real time data acquisition step；Set up the credible set step of key equipment node；Degree of membership calculation procedure；Degree of membership amendment discriminating step；And CIM step is reorganized according to credible set.Fuzzy set and fuzzy reasoning concept have been incorporated into power network real-time topology structural modifications by the present invention, by setting up credible set and insincere set, default cluster is carried out to all kinds of topological nodes and circuit, confidence level support data are then continually introduced, that dynamically corrects each equipment is subordinate to angle value.The present invention can dynamically correct all kinds of mistakes in real-time topology structure.By the introducing of this method, the matching of multi-data source can be completed in the case of without manually participating in and topology is corrected, improved the real-time feature of system, reduce the probability of mistake generation.
Description
Technical field
The present invention relates to a kind of CIM topological realization stipulations based on fuzzy reasoning and modification method.
Background technology
Common information model (CIM) is an abstract model, all main objects of electric power enterprise is described, particularly with electricity
Power runs relevant object.
The standard method of power system resource is represented by providing a kind of relation with object class and attribute and between them,
CIM conveniently realize different seller's stand-alone developments EMS (EMS) application it is integrated, multiple stand-alone developments it is complete
It is integrated between EMS system, and EMS system and the system of other different aspects for being related to Operation of Electric Systems, for example generate electricity
Or it is integrated between distribution system.This is by defining a kind of common language (i.e. syntax and semantics) based on CIM so that these
Using or system common data can be accessed independent of the internal representation of information and information is exchanged and realized.
Object class described in CIM is substantially abstract, can be used for various applications.CIM use far beyond
The scope that it is applied in EMS.This standard should be interpreted as a kind of can carry out integrated instrument in any field, as long as should
Field needs a kind of public power system so that interoperability and insertion compatibility can be realized between application and system, and with appointing
What implements unrelated.It is larger due to complete CIM, so the object that will be contained in CIM divide into several logics
Bag, each logic bag represents certain part of whole electric power system model.The set of these bags develops into independent standard.
Existing CIM follows IEC61970 standards.IEC61970 is that International Electrotechnical Commission formulates《Energy management system
System application programming interfaces (EMS-API)》Serial international standard.The domestic power industry standard DL890 of correspondence.IEC61970 series
Standard defines EMS (EMS) application programming interfaces (API), it is therefore intended that be easy to integrated from different manufacturers
Various applications inside EMS, are easy to interconnect other systems inside EMS and control centre, and be easy to implement in different scheduling
Model between heart EMS is exchanged.
IEC61970 is main by interface reference model, common information model (CIM) and the part of component interface specification (CIS) three
Composition.The interface reference specification of a model mode of the system integration, common information model defines the semanteme of information exchange, and component connects
Mouth specification specify that the grammer that information is exchanged.In existing dispatching of power netwoks SCADA system, support to carry out based on IEC61970 rule
The CIM exchange format of model.
Opened up in the intelligent artwork management of distribution and aid decision-making system running, it is necessary to obtain newest power network in real time
Flutter state, equipment state and all kinds of measuring values.Because these data are from multiple different systems, wherein main with EMS system
SCADA master server be source, because the inconsistency and maintenance/accident etc. of transmission of electricity net topology of all kinds of acquisition system data become
Change the renewal delay problem of information, so result in the CIM that analysis system obtained has deviation, and these deviations will be straight
Connect the analysis result of influence later stage optimization system.
Therefore, there is very necessary design one can be to the stipulations and correction of CIM files and its various corresponding real time datas
Method.
The content of the invention
It is real in order to solve the offset issue of the corresponding relation between power network topology CIM structures and real time data in the prior art
When the power network topology that handles merge after there is a situation where mistake, it is of the invention to propose a kind of CIM based on fuzzy reasoning and open up
Real-time stipulations and modification method are flutterred, fuzzy reasoning preferably can be carried out according to incidence relation between Various types of data, finally given
One basic data closer to true power network is originated.
Therefore, the invention provides a kind of real-time stipulations of CIM topology based on fuzzy reasoning and modification method, including
Following steps：
(1) Real time data acquisition
(1.1) obtain current electric grid topology CIM from SCADA system and describe file.
(1.2) current each on off state (0 or 1) is obtained from EMS system, the corresponding amount measuring point data of each equipment (active P,
Idle Q, voltage V)
(2) the credible set of key equipment node is set up
(2.1) the key equipment node in CIM descriptions, including bus type cim are extracted:BusbarSection, Switch
Type cim:Breaker, transformer type cim:PowerTransformer, wire type cim:The classes of ACLineSegment tetra- electricity
Gas equipment.If bus type node is Si, if switchtype node is Bi, transformer type node is Pi, wire type node
For Ai.
(2.2) set up credible set U and insincere set V, build membership function μ (x), each key equipment with
Degree of membership μ (x) is divided, so as to obtain confidence level vector relations：
(3) calculate each key equipment node is subordinate to angle value
(3.1) degree of membership of switching node is calculated, current t and the switching-state information at t-1 moment are read, if shape
The identical then setting μ (B of state informationi) it is 0.8, μ (B are set if differenti) it is 0.2.
(3.2) degree of membership of bus nodes is calculated, it is respectively SB to read current t and the information of voltage at t-1 momenttWith
SBt-1, its μ (Si)=1- | SBt-SBt-1|/SBt。
(3.3) degree of membership of calculating transformer node, reads current t and the three side effective power flows at t-1 moment are measured
Value, i.e. high-pressure side PHtAnd PHt-1, medium voltage side PMtAnd PMt-1, low-pressure side PLtAnd PLt-1, its degree of membership can be calculated：
(3.4) degree of membership of conductor node is calculated, current t and the active measuring value and nothing at t-1 moment is read
Work(measuring value, that is, have work value ACLinePtAnd ACLinePt-1, without work value ACLineQtAnd ACLineQt-1, its degree of membership can be calculated：
(4) degree of membership amendment differentiates
(4.1) if current t is subordinate to angle value μ (xi)tIt is subordinate to angle value μ (x more than or equal to the t-1 momenti)t-1, then repair
The proper angle value that is before subordinate to is μ (xi)t=μ (xi)t×(1+(μ(xi)t-μ(xi)t-1)2).Otherwise, currently it is subordinate to angle value not correct.
(5) CIM is reorganized according to credible set
(5.1) all key equipment node x in traversal CIMiIf the probability that it is under the jurisdiction of credible set U is big
In the probability for being under the jurisdiction of insincere set V, then the node x in CIM is setiEffectively.Otherwise, the node is set invalid.
(5.2) it is device node to export all marks, is preserved by interface into SCADA system, and set
Analysis mark position is 1.
(5.3) each on off state (0 or 1) at new data, i.e. t+1 moment, the corresponding amount of each equipment are obtained from EMS system
Measuring point data (active P, idle Q, voltage V).Go to (3) part and carry out new round reality
When stipulations with amendment flow.
Fuzzy set and fuzzy reasoning concept have been incorporated into power network real-time topology structural modifications by the present invention, can by setting up
All kinds of topological nodes and circuit are carried out default cluster, then continually introduce confidence level support sizes by letter set and insincere set
According to that dynamically corrects each equipment is subordinate to angle value.Fuzzy relation is established between credible set and insincere aggregation device, is led to
Crossing fuzzy relation can be evaluated according to the suitability of typical effectively topological structure, so that dynamically in amendment real-time topology structure
All kinds of mistakes, reach correction with correct effect., can be complete in the case of without manually participating in by the introducing of this method
Matching into multi-data source is corrected with topology, is improved the real-time feature of system, is reduced the probability of mistake generation.
Beneficial effects of the present invention are mainly manifested in：1st, CIM is corrected in real time；2nd, fuzzy reasoning is verified.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the real-time stipulations of the topology of the CIM based on fuzzy reasoning and modification method according to the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, the real-time stipulations of the topology of the CIM based on fuzzy reasoning and modification method of the present invention, including with
Lower step：
S10：Current electric grid topology CIM, which is obtained, from SCADA system describes file
S20：Current each on off state (0 or 1), corresponding amount measuring point data (the active P, nothing of each equipment are obtained from EMS system
Work(Q, voltage V)
S30：Extract the key equipment node in CIM descriptions, including bus type cim:BusbarSection, Switch
Type cim:Breaker, transformer type cim:PowerTransformer, wire type cim:The classes of ACLineSegment tetra- electricity
Gas equipment.If bus type node is Si, if switchtype node is Bi, transformer type node is Pi, wire type node
For Ai.
S40：Set up credible set U and insincere set V, build membership function μ (x), each key equipment with
Degree of membership μ (x) is divided, so as to obtain confidence level vector relations：
S50：Calculate the degree of membership of key equipment node
The degree of membership of switching node is calculated, current t and the switching-state information at t-1 moment is read, if state is believed
Manner of breathing is with then setting μ (Bi) it is 0.8, μ (B are set if differenti) it is 0.2.
The degree of membership of bus nodes is calculated, it is respectively SBt and SBt- to read current t and the information of voltage at t-1 moment
1, its μ (Si)=1- | SBt-SBt-1|/SBt。
The degree of membership of calculating transformer node, reads current t and the three side effective power flow measuring values at t-1 moment, i.e.,
High-pressure side PHtAnd PHt-1, medium voltage side PMt and PMt-1, low-pressure side PLtAnd PLt-1, its degree of membership can be calculated：
The degree of membership of conductor node is calculated, current t is read and the active measuring value at t-1 moment is measured with idle
Value, that is, have work value ACLinePtAnd ACLinePt-1, without work value ACLineQtAnd ACLineQt-1, its degree of membership can be calculated：
S60：If current t is subordinate to angle value μ (xi)tIt is subordinate to angle value μ (x more than or equal to the t-1 momenti)t-1, then correct
The current angle value that is subordinate to is μ (xi)t=μ (xi)t×(1+(μ(xi)t-μ(xi)t-1)2).Otherwise, currently it is subordinate to angle value not correct.
S70：Travel through all key equipment node x in CIMiIf its probability for being under the jurisdiction of credible set U is more than
It is under the jurisdiction of insincere set V probability, then sets the node x in CIMiEffectively.Otherwise, the node is set invalid.
S80：All marks of output are device node, are preserved by interface into SCADA system, and setting point
It is 1 to analyse flag bit.
S90：Each on off state (0 or 1) at new data, i.e. t+1 moment, the corresponding amount of each equipment are obtained from EMS system
Measuring point data (active P, idle Q, voltage V).Go to step S50.
Fuzzy set and fuzzy reasoning concept have been incorporated into power network real-time topology structural modifications by the present invention, can by setting up
All kinds of topological nodes and circuit are carried out default cluster, then continually introduce confidence level support sizes by letter set and insincere set
According to that dynamically corrects each equipment is subordinate to angle value.Fuzzy relation is established between credible set and insincere aggregation device, is led to
Crossing fuzzy relation can be evaluated according to the suitability of typical effectively topological structure, so that dynamically in amendment real-time topology structure
All kinds of mistakes, reach correction with correct effect.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
1. a kind of real-time stipulations of CIM topology and modification method based on fuzzy reasoning, it is characterised in that including following step
Suddenly：
Real time data acquisition step：Current electric grid topology CIM is obtained from SCADA system and describes file, and is obtained from EMS system
The corresponding amount measuring point data of current each on off state and each equipment；
Set up the credible set step of key equipment node：Extraction CIM describes the key equipment node in file, sets up key equipment
The credible set U and insincere set V of node, build membership function μ (x), each key equipment with degree of membership μ (x)
Divided, so as to obtain confidence level vector relations：
Degree of membership calculation procedure：Calculate each key equipment node is subordinate to angle value；
Degree of membership amendment discriminating step：If current t is subordinate to angle value μ (xi)tIt is subordinate to angle value μ more than or equal to the t-1 moment
(xi)t-1, then the current angle value that is subordinate to is corrected for μ (xi)t=μ (xi)t×(1+(μ(xi)t-μ(xi)t-1)2), otherwise, current degree of membership
Value is not corrected；And
CIM step is reorganized according to credible set：Travel through all key equipment node x in CIMiIf it is subordinate to
The probability for belonging to credible set U is more than the probability for being under the jurisdiction of insincere set V, then sets the node x in CIMiEffectively,
Otherwise, the node is set invalid；Then all marks are exported for device node, are preserved by interface to SCADA systems
In system, and set analysis mark position；And each on off state and each equipment at new data, i.e. t+1 moment are obtained from EMS system
Corresponding amount measuring point data, carry out the real-time stipulations of a new round with amendment flow.
2. the real-time stipulations of CIM topology and modification method according to claim 1 based on fuzzy reasoning, its feature exist
In, obtain current each on off state, i.e., 0 or 1 from EMS system, the corresponding amount measuring point data of each equipment include active P, idle Q and
Voltage V.
3. the real-time stipulations of CIM topology and modification method according to claim 1 or 2 based on fuzzy reasoning, it is special
Levy and be, the key equipment node includes bus nodes Si, switching node Bi, transformer node Pi and conductor node Ai.
4. the real-time stipulations of CIM topology and modification method according to claim 3 based on fuzzy reasoning, its feature exist
In, the degree of membership of the switching node, which is calculated, includes the current t of reading and the switching-state information at t-1 moment, i.e., and 0 or 1, such as
The identical then configuration switch node degree of membership μ (B of fruit status informationi) it is 0.8, μ (B are set if differenti) it is 0.2.
5. the real-time stipulations of CIM topology and modification method according to claim 3 based on fuzzy reasoning, its feature exist
In the degree of membership of the bus nodes, which is calculated, includes the information of voltage SBt for reading current t and the information of voltage at t-1 moment
SBt-1, then bus section degree of membership μ (Si)=1- | SBt-SBt-1|/SBt。
6. the real-time stipulations of CIM topology and modification method according to claim 3 based on fuzzy reasoning, its feature exist
In the degree of membership of the transformer node, which is calculated, to be included：Three side effective power flow measuring values of current t and t-1 moment are read,
That is high-pressure side PHtAnd PHt-1, medium voltage side PMtAnd PMt-1, low-pressure side PLtAnd PLt-1, then transformer node degree of membership：
7. the real-time stipulations of CIM topology and modification method according to claim 3 based on fuzzy reasoning, its feature exist
In the degree of membership of the conductor node, which is calculated, to be included：Read current t and the active measuring value at t-1 moment is measured with idle
Value, that is, have work value ACLinePtAnd ACLinePt-1, without work value ACLineQtAnd ACLineQt-1, then conductor node degree of membership：
8. the real-time stipulations of CIM topology and modification method according to claim 1 based on fuzzy reasoning, its feature exist
In the mark is set as 1 for the analysis mark position of device node.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109784782A (en) * | 2019-03-05 | 2019-05-21 | 清华大学 | Electric power supply system for subway dynamic risk analysis appraisal procedure based on fuzzy reasoning |
| CN110033179A (en) * | 2019-03-29 | 2019-07-19 | 国网山东省电力公司青岛供电公司 | Model in-stockroom operation verifies in real time online and the implementation method of history verification |
| CN110334932A (en) * | 2019-06-27 | 2019-10-15 | 广州供电局有限公司 | Grid nodes different degree appraisal procedure, computer equipment and storage medium |
| CN111313399A (en) * | 2018-12-12 | 2020-06-19 | 武汉国测数据技术有限公司 | Method, device and system for confirming topological relation of regional power utilization network |
| CN112507498A (en) * | 2020-12-02 | 2021-03-16 | 广东电网有限责任公司佛山供电局 | SG-CIM-based digital model establishing method |
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| CN111313399A (en) * | 2018-12-12 | 2020-06-19 | 武汉国测数据技术有限公司 | Method, device and system for confirming topological relation of regional power utilization network |
| CN111313399B (en) * | 2018-12-12 | 2021-10-19 | 深圳电蚂蚁数据技术有限公司 | Method, device and system for confirming topological relation of regional power utilization network |
| CN109784782A (en) * | 2019-03-05 | 2019-05-21 | 清华大学 | Electric power supply system for subway dynamic risk analysis appraisal procedure based on fuzzy reasoning |
| CN110033179A (en) * | 2019-03-29 | 2019-07-19 | 国网山东省电力公司青岛供电公司 | Model in-stockroom operation verifies in real time online and the implementation method of history verification |
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| CN112507498A (en) * | 2020-12-02 | 2021-03-16 | 广东电网有限责任公司佛山供电局 | SG-CIM-based digital model establishing method |
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Application publication date: 20170804 |