CN102967780A - Modeling method for substation intelligent alarm - Google Patents
Modeling method for substation intelligent alarm Download PDFInfo
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Abstract
The invention provides a modeling method for substation intelligent alarm. The modeling method comprises: building a protection action element inference model by aiming at a substation relay protection action element; building the mapping relation of primary equipment, secondary equipment, measurement data, status data and protection information and configuration information of a relay protection device; obtaining a wire connection mode of the primary equipment and the connection relation with an adjacent interval through network topology; on the basis of an expert system knowledge database, building a fault inference model by aiming at various fault conditions, signs, process characteristics and result information; and adopting a fault description language which is based on an extensible markup language (XML) to describe the protection action element inference model and the fault inference model. The fault inference model is built according to a topological structure, element parameters and fault characteristics of a substation and has the characteristics of realization of flexibility, convenience in extension, strong adaptability and the like, so that high actionability is obtained for fault inference on the basis of the fault inference model.
Description
Technical field
The invention belongs to the Substation Automation System field, particularly a kind of intelligent substation alarm modeling method.
Background technology
At present, domestic main flow producer adopts RBES to realize transformer station's fault analysis mostly, but this mode exists the defectives such as system maintenance difficulty, fault-tolerant ability be relatively poor, and the through engineering approaches degree is low, is unfavorable for applying.If can be for the defective of RBES, by the knowledge base of stand interior various fault and expert system is analyzed, is summed up and refines, with its abstract be the fault reasoning model, and based on these fault reasoning models fault is analyzed, just can effectively solve the problem that RBES exists.Therefore, in automation of transformation substations field, demand occurring a kind of intelligent alarm modeling method that realizes the fault reasoning model urgently.
Summary of the invention
Transformer station's fault mainly comprises electric network fault and secondary device fault two classes; for electric network fault; although its process is very complicated; be used for the metric data that fault is judged; status data contains much information; fault signature and process status are many; the data of sending on after but the process protective relaying device is processed are but relatively short and sweet; this is so that based on the information of sending on the protective relaying device; the monitoring result information that is aided with again SOE and the primary equipment on-line monitoring system of measure and control device; certain specific fault is described, and then generates the selection that fault model becomes a kind of reality.And for the secondary device fault, self-test signal and communications status that present its criterion is mainly uploaded based on secondary device, device category is many, model is many, manufacturer is many, characteristic is different although exist, and on the self-test signal that send lack the unified adverse condition such as standard, but for concrete fault, fault signature and criterion are all comparatively clear and definite, and its fault model is compared comparatively simple with the electric network fault model, easier modeling.
These characteristics according to transformer station's fault, the invention provides a kind of intelligent substation alarm modeling method, be used for generation transformer station fault reasoning model, thereby rely on the fault reasoning model realization intelligent substation alarm of setting up, have and realize flexibly, expand convenient, adaptable advantage.
Described intelligent substation alarm modeling method is characterized in that, may further comprise the steps:
Step 1 for the substation relay protection action element, is set up protection action element inference pattern;
Step 2 is set up mapping relations between the primary equipment, secondary device, metric data, status data, protection information of transformer station and the configuration information of protective relaying device;
Step 3, by network topology obtain primary equipment the mode of connection and with the annexation of adjacent spaces;
Step 4 based on the expert system knowledge database, is set up the fault reasoning model for condition, sign, process feature and the object information of all kinds of faults;
Step 5, failure-description language description described protection action element inference pattern and the fault reasoning model of employing XML-based language.
Preferably; for conditions such as the electric pressure of substation relay protection action element, the mode of connection, object of protections, set up described protection action element inference pattern for the parameters such as action reason, motion characteristic, action impact and action aftertreatment of described relay protection action element in the described step 1.
Preferably, in the described step 2, in conventional substation, from monitoring system of electric substation, extract relevant information and be configured, in based on IEC61850 standard transformer station, be configured from IEC61850 model extraction relevant information.
Preferably, described step 4 comprises: for condition, the feature of single electrical separation electric network fault, based on described protection action element inference pattern and expert system knowledge Database monospace electric network fault model; For striding the electrical separation electric network fault, on electric network fault model basis, monospace, stride interval electric network fault model in conjunction with network topological information foundation; For the substation secondary device fault, set up the secondary device fault model; In conjunction with described monospace electric network fault model, stride interval electric network fault model and secondary device fault model, form the electric network fault model with secondary device fault auxiliary judgment.
Preferably, in step 5, described failure-description language adopts transformer station's object and the object properties naming system of sectional type character string.Further preferably, described naming system is used for being illustrated in the attribute of related device object, device object attribute and device object attribute of described fault reasoning model definition, each minute be intersegmental separates with ". ", complete charcter topology be " factory stands. the interval. equipment. device attribute. the attribute of attribute ".
Preferably, in the described step 5, described failure-description language definition be used for the constraint condition of fault analysis.
As seen, intelligent substation alarm modeling method of the present invention is for topological structure, component parameters and the fault characteristic of transformer station, set up the fault reasoning model, have the advantages such as realization is flexible, expansion convenience, strong adaptability, therefore the fault reasoning that carries out based on the fault reasoning model has higher exploitativeness.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is protection action element inference modeling synoptic diagram in the embodiment of the invention.
Fig. 2 obtains transforming plant primary equipment and secondary device information mapping relations synoptic diagram by the IEC61850 model in the embodiment of the invention.
Fig. 3 is the sectional type character string naming system structural drawing of the embodiment of the invention.
Fig. 4 is the fault reasoning model generation synoptic diagram of the embodiment of the invention.
Fig. 5 is 220kV circuit typical wiring figure.
Fig. 6 is the example that 220kV circuit transient fault inference pattern shown in Figure 5 adopts the fault logic descriptive language to describe.
Embodiment
In order to make those skilled in the art person understand better technical scheme of the present invention, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with embodiment and embodiment accompanying drawing.
Transformer station's fault mainly comprises electric network fault and secondary device fault two classes, and intelligent substation alarm modeling method of the present invention is set up respectively corresponding fault reasoning model for above two kinds of faults.Wherein, for electric network fault, based on the information of sending on the protective relaying device, be aided with again the monitoring result information of SOE and the primary equipment on-line monitoring system of measure and control device, certain specific fault is described, and then generate fault model.And for the secondary device fault, self-test signal and the communications status mainly uploaded based on secondary device are set up corresponding model according to fault signature and criterion.
Intelligent alarm modeling method of the present invention may further comprise the steps:
Step 1 for the substation relay protection action element, is set up protection action element inference pattern.
For electric network fault; although its process is very complicated; the metric data, the status data that are used for the fault judgement contain much information; fault signature and process status are many; the data of sending on after but the process protective relaying device is processed are but relatively short and sweet, so that this is based on the information of sending on the protective relaying device, is aided with the monitoring result information of SOE and the primary equipment on-line monitoring system of measure and control device again; certain specific fault is described, and then generates the selection that fault model becomes a kind of reality.
Be illustrated in figure 1 as protection action element inference modeling synoptic diagram; as shown in the figure; the conditions such as the electric pressure of acquisition substation relay protection action element, the mode of connection, object of protection are set up described protection action element inference pattern for the parameters such as action reason, motion characteristic, action impact and action aftertreatment of described relay protection action element.
Step 2 is set up mapping relations between the primary equipment, secondary device, metric data, status data, protection information of transformer station and the configuration information of protective relaying device.
Set up mapping relations between transforming plant primary equipment that the fault reasoning model needs, secondary device, all kinds of metric data, status data, the protection information and the configuration information of protective relaying device; in conventional substation; can extract relevant information from monitoring system of electric substation is configured; in based on IEC61850 standard transformer station, can be configured from the IEC61850 model extraction relevant information of transformer station.As shown in Figure 2; for obtaining transforming plant primary equipment and secondary device information mapping relations synoptic diagram by the IEC61850 model; comprise and from the transformer substation system configuration describing document (SCD) of transformer substation IEC 61850 model, read observing and controlling IED model and protection IED model; and from the normative model file SSD of transformer station, read the transforming plant primary equipment model; thereby set up the needed mapping relations of transformer station's fault analysis modeling; comprise metric data and primary equipment; status data and primary equipment; mapping relations between protection information and the primary equipment, and the configuration of protection IED.
Step 3, by network topology obtain primary equipment the mode of connection and with the annexation of adjacent spaces.
Step 4 based on the expert system knowledge database, is set up the fault reasoning model for condition, sign, process feature and the object information of all kinds of faults.In this step, various faults and expert system knowledge base in the transformer station are analyzed, summed up, extract fault condition, failure symptom, failure process feature and fail result, it abstractly be Figure 4 shows that transformer station's fault reasoning model generation synoptic diagram for the fault reasoning model.Condition, feature for single electrical separation electric network fault, based on the described described protection action element inference pattern of step 1 and expert system knowledge database, set up the fault condition of the single electrical separation electric network fault of reflection transformer station and the monospace electric network fault model of fault signature; For striding the electrical separation electric network fault, on electric network fault model basis, monospace, integrating step 3 described network topological informations are set up and are striden interval electric network fault model; For the substation secondary device fault, set up the secondary device fault model; In conjunction with described monospace electric network fault model, stride interval electric network fault model and secondary device fault model, form the electric network fault model with secondary device fault auxiliary judgment.
Step 5, failure-description language description described protection action element inference pattern and the fault reasoning model of employing XML-based language.In the failure-description language, the constraint conditions such as the electric pressure that is used for fault analysis, separate, time have been defined.The attribute such as fault condition, fault signature of transformer station's fault reasoning model is described for the ease of the operational failure descriptive language, set up transformer station's object and the object properties naming system of a set segmented formula character string, this naming system is with reference to the definition of Reference in the IEC61850 standard.As shown in Figure 3, sectional type character string substation equipment and device attribute naming system structure that the present invention adopts, different segmentations are directly separated with ". ", complete charcter topology be " factory station. the interval. equipment. device attribute. the attribute of attribute ", for example " SFac01.GLine01.Br5011.Ia.Quality ".Wherein of particular note:
A) " SXXX " field is used for defining power plant and substation's information.This field means Station with " S " beginning.When needs are set up many factories station failure model, need this section of definition content, adopt " S+ factory station key word " formal definition; Fill in default value " SDefault " under single factory station pattern, mean current factory station.
B) " GXXX " field is used for defining the electrical separation (equipment group) of specifying the factory station, and this field means Group with " G " beginning.When needing in the model to obtain adjacent electrical separation information, specify relevant electrical separation in this field, adopt " G+ electrical separation key word " formal definition; Attribute is filled in default value " GDefault " in this interval, means this electrical separation.
C) the 3rd field is used for defining the object (equipment) of specifying electrical separation.An electrical separation comprises multiple object (equipment), such as isolating switch, disconnector, grounding switch, observing and controlling IED, protection IED etc., and isolating switch adopts " Br+isolating switch key word " formal definition with " Br " beginning; Disconnector adopts " Sw+disconnector key word " formal definition with " Sw " beginning; Grounding switch adopts " ESw+grounding switch key word " formal definition with " ESw " beginning; Observing and controlling IED adopts " Mcd+observing and controlling IED key word " formal definition with " Mcd " beginning; Protection IED adopts " Rly+protection IED key word " formal definition with " Rly " beginning, the miscellaneous equipment definition, by that analogy.
D) the 4th field is used for the attribute of first three section of definition appointed object, voltage for example, and electric current, position etc., different attribute adopts different character string definition, Ia for example, Uab, Pos etc.
E) can expand and use the 5th field, be used for the attribute of defined attribute, the quality of Ia for example, the quality of Uab etc.
The below adopts the example of the fault reasoning model of fault logic descriptive language description with the instantiation explanation.Fig. 5 is 220kV circuit typical wiring figure.As shown in Figure 6, for 220kV circuit transient fault inference pattern shown in Figure 5 adopts the fault logic descriptive language example is described.The characteristic feature of circuit generation transient fault is: during line failure, and line protective devices action outlet tripping isolating switch, then the line protection reclosure action overlaps isolating switch, the reclosing success.The constraint condition of this fault comprises: occur to whether phase-splitting etc. of time (be generally 7-8 second), electric pressure, switch of failure removal from fault, and the dirigibility of XML-based, these constraint conditions can define by the etendue critical word.The attributes such as the fault condition in the model, fault signature adopt sectional type character string substation equipment and device attribute naming system.Some features judgements need to be carried out logical operation in the fault model, adopt script to realize.
As seen, intelligent substation alarm modeling method of the present invention is for topological structure, component parameters and the fault characteristic of transformer station, set up the fault reasoning model, have the advantages such as realization is flexible, expansion convenience, strong adaptability, therefore the fault reasoning that carries out based on the fault reasoning model has higher exploitativeness.
The above only is the specific embodiment of the present invention, and the present invention can also be applied in the miscellaneous equipment; Size and quantity in more than describing all only are informative, and those skilled in the art can select suitable application size according to actual needs, and do not depart from the scope of the present invention.Protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Claims (7)
1. an intelligent substation alarm modeling method is characterized in that, may further comprise the steps:
Step 1 for the substation relay protection action element, is set up protection action element inference pattern;
Step 2 is set up the mapping relations between the primary equipment, secondary device, metric data, status data, protection information of transformer station and is obtained the configuration information of protective relaying device;
Step 3, by network topology obtain primary equipment the mode of connection and with the annexation of adjacent spaces;
Step 4 based on the expert system knowledge database, is set up the fault reasoning model for condition, sign, process feature and the object information of all kinds of faults;
Step 5, failure-description language description described protection action element inference pattern and the fault reasoning model of employing XML-based language.
2. intelligent substation alarm modeling method according to claim 1; it is characterized in that; in the described step 1 for the substation relay protection action element; according to conditions such as electric pressure, the mode of connection, object of protections, set up described protection action element inference pattern in conjunction with parameters such as action impact and action aftertreatments.
3. intelligent substation alarm modeling method according to claim 1, it is characterized in that, in the described step 2, in conventional substation, from monitoring system of electric substation, extract relevant information and be configured, in based on IEC61850 standard transformer station, be configured from IEC61850 model extraction relevant information.
4. intelligent substation alarm modeling method according to claim 1, it is characterized in that, described step 4 comprises: for condition, the feature of single electrical separation electric network fault, based on described protection action element inference pattern and expert system knowledge Database monospace electric network fault model; For striding the electrical separation electric network fault, on electric network fault model basis, monospace, stride interval electric network fault model in conjunction with network topological information foundation; For the substation secondary device fault, set up the secondary device fault model; In conjunction with described monospace electric network fault model, stride interval electric network fault model and secondary device fault model, form the electric network fault model with secondary device fault auxiliary judgment.
5. intelligent substation alarm modeling method according to claim 1 is characterized in that, in step 5, and transformer station's object and object properties naming system that described failure-description language different forms is the sectional type character string.
6. intelligent substation alarm modeling method according to claim 5, it is characterized in that, described naming system is used for being illustrated in the attribute of related device object, device object attribute and device object attribute of described fault reasoning model definition, each minute be intersegmental separates with ". ", complete charcter topology be " factory stands. the interval. equipment. device attribute. the attribute of attribute ".
7. intelligent substation alarm modeling method according to claim 1 is characterized in that, in the described step 5, described failure-description language definition be used for the constraint condition of fault analysis.
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| CN109633381A (en) * | 2019-02-21 | 2019-04-16 | 贵州电网有限责任公司 | A kind of electric network failure diagnosis intelligent analysis method |
| CN110674193A (en) * | 2019-10-25 | 2020-01-10 | 国网四川省电力公司技能培训中心 | Intelligent substation relay protection fault information modeling method |
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