CN103198041A - Method for establishing IEC61970 GID (general interface definition) interface - Google Patents
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Abstract
The invention relates to a method for establishing IEC61970 GID (general interface definition) interface. The method comprises the following steps: 1, establishing an information model, wherein the information model describes basic data objects which are accessed through the GID interface service; 2, establishing basic access service of model information so as to realize GID general and public reading and writing access services which is generally used for accessing basic model data; 3, establishing an HSDA (high speed data access) interface and a TSDA (time sequence data access) interface so as to further access real-time data and historical data besides reading and writing access, realized in the step 2, of the model basic data. By the method, standard data access mechanism is provided for an electric energy quality monitoring system, interconnection and intercommunication among systems are realized, and high compatibility of the systems is guaranteed. By the method, the development efficiency can be increased, so that the program interface is more simple and compact, and the operation is more efficient, so that the development cost and the maintenance cost are reduced and the expenditure is saved.
Description
Technical field
The present invention relates to a kind of based on distributed system technology realization IEC61970 GID interface, be used to provide and browse interface and data access interface, for quality of power supply system provides in real time and historical data visit support, reach the method that general data interaction purpose realizes setting up IEC61970 GID interface.
Background technology
IEC61970 GID(general-purpose interface definition) provide a cover be used for the application of software data visit and with the API(application access interface of other applications exchange information), these API do not rely on application, so they are counted as all general and public (so being GID) between using.
Summary of the invention
Purpose of the present inventionJust be to provide a kind of method of the IEC61970 of realization GID interface, for electric energy quality monitoring system provides the data access mechanism of standard, interconnect between the realization system, guarantee system's favorable compatibility.Use this method can improve development efficiency, make routine interface more succinct and compact, move more efficient, thereby reduce development and maintenance cost, saved spending.
Technical scheme of the present inventionFor: a kind of method that realizes IEC61970 GID interface, the GID interface comprises: GDA(conventional data access interface), HSDA(high-speed data access interface), TSDA(time series data access interface), its step is carried out according to hierarchical relationship and the data access sequences of GID interface service: at first set up information model, carry out the basic access service GDA of model information then, carry out at last in real time/high-speed data access services HSDA and historical data access services TSDA.HSDA and TSDA are based on previous step (being basic access service GDA), call the interface of realizing in the previous step (being basic access service GDA), and previous step is expanded.Concrete steps are as follows:
A kind of method that realizes IEC61970 GID interface is characterized in that the step of this method is as follows:
The first step, set up information model, information model has been described the master data object that has access to by the GID interface service;
Set up information model, exactly the type of data object, member property and incidence relation are carried out the standardization modeling, and according to this model structure, the resource that the GID interface is served is carried out initialization; Information model has been described the master data object that has access to by the GID interface service;
Second step, the basic access service of setting up model information, this step has realized the general and public reading and writing access services of GID, the general visit basic model data that are used for;
The synchronization of access mechanism of request/reply has been used in the basic access service of model information, comprises the content of three aspects: read access, write access and update event notice:
The read access service provides the inquiry mode of no filtercondition or the inquiry mode of band filtercondition; The inquiry of wherein not having filtercondition obtains corresponding resource ID by the identification service that public service provides by the unified resource identifier, these resource IDs is imported into corresponding resource query interface again and obtains the Query Result that meets the demands; The method that wherein realizes the inquiry of band filtercondition is: realized being similar to the attribute filtrator that SQL is " where " if-clause in the data base query language, described filtercondition by this structure;
Write access comprises and upgrades one or more objects, the property value of new resources more, and object can be created or destroy to the life cycle of control object.
Event is responsible for notifying the user specific data variation, and guarantees the data access consistance.Renewal and update content by Callback interface notice user data;
The 3rd goes on foot, sets up high-speed data access interface HSDA and time series data access interface TSDA, the read and write access of the model-based notebook data of realizing except second step, also need further to visit real time data and historical data, this just need set up HSDA and TSDA;
The process of setting up HSDA is:
At first set up data access and connect, this connects and is used for sending request to service end, and service end is returned the result of request by this connection; Then, at the data creation data clauses and subclauses that will obtain; Simultaneously, set up call back function Callback () for the new data clauses and subclauses of creating, when data change, enter call back function automatically, can carry out data and handle in this function, therefore, by this call back function, data can be carried out real-time update automatically;
At last, service end provides the service browsed and data exchange service, and service finishes the back session and destroys.HSDA provides, and to browse service be that the HSDA Data View is showed the user, and the user can select to inquire about which data wherein.When the user sends request of data to service end, after requiring the needed data of inquiry, service end is returned the result of inquiry, but in order to improve transfer efficiency, to reduce data quantity transmitted, service end is not directly returned all resource results, but returns an iterator that points to the resource results sequence, passes through iterator, the user can order access queries result, therefrom read the view resource description of arbitrary number.
Set up the process of TSDA:
TSDA has expanded the interface of HSDA, and it comprises the partial function of HSDA interface, simultaneously, increases the management to time series data.
Identical with HSDA, at first set up data access and connect, then, at the data creation data clauses and subclauses that will obtain, set up call back function, then, service end provides the service browsed and data exchange service, when no longer needing to serve, destroys session.
Different with HSDA is, in data exchange service, and time range that can specific data, thus obtain historical data in certain time period.This is the part of TSDA expansion.
Beneficial effect of the present inventionFor:
IEC 61970 GID have provided and have been applicable to various identical or different electric system application or the universal data interface between the system, have formulated application or inter-module and have carried out the standard interface of message exchange and event type and the message content that these interfaces use.The present invention is by studying GID, comprise GDA(conventional data visit), the visit of HSDA(high-speed data), the visit of TSDA(time series data) interface of institute's standard among the GID of interface, on the basis of research, develop standard compliant API interface, thereby realized the high-efficiency reliable data access service.
Advantage is as follows:
(1) good interconnection, intercommunity.
Realize IEC61970 GID interface, making can be with unified interface accessing data by the quality of power supply application software of different manufacturers exploitation, reach interconnecting between the system, information sharing, formulated application or inter-module and carried out the standard interface of message exchange and event type and the message content that these interfaces use.
(2) can expand scalable
Adopt the CORBA middleware Technology, make and realize having platform-neutral, effectively distributing data is realized the telescopic system architecture that is easy to expand.
(3) concurrent ability is strong
The employing asynchronous method calls, and strengthens the concurrent ability of system, improves data throughout;
(4) performance is efficient
Concurrent access mechanism efficiently can satisfy demand in real time extensive and the historical data visit, has strengthened the performance of data access and processing.
Realization by IEC61970 GID; the system that makes obtains common data by standard method; protected the existing power application resource; improved the development efficiency of quality of power supply application software; ensure the intercommunication mutually between system, improved opening, portability and the extensibility of system greatly.
Technique effect
According to the inventive method, for each application function of quality of power supply system provides some general data access interfaces, according to each application function difference, can improve 2-4 development efficiency doubly, economize on resources, reduce development and maintenance cost.Thereby, make quality of power supply system no longer limit to certain producer, the data access interface read-write model data that can utilize this method to realize between the different manufacturers.
Description of drawings
Fig. 1 is information model class figure.
Fig. 2 is the initialization information model.
Fig. 3 does not have the querying flow figure of filtercondition for GDA.
Fig. 4 is the resource identifier module diagram.
Fig. 5 is the structural drawing of resource unique identifier.
Fig. 6 upgrades the update interface for GDA.
Fig. 7 is the TSDA information interface.
Fig. 8 is the TSDA service object.
Fig. 9 is for realizing the data access service process flow diagram.
Figure 10 is data updating process.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
A kind of method that realizes IEC61970 GID interface of the present invention, the GID interface comprises: GDA(conventional data visit), the visit of HSDA(high-speed data), the visit of TSDA(time series data) interface, its step is carried out according to hierarchical relationship and the data access sequences of GID interface service.At first set up information model, carry out the basic access service GDA of model information then, carry out at last in real time/high-speed data access services HSDA and historical data access services TSDA.HSDA and TSDA are based on previous step (being basic access service GDA), call the interface of realizing in the previous step (being basic access service GDA), and previous step is expanded.Concrete steps are as follows:
The first step, set up information model
Information model has been described the master data object that has access to by the GID interface service.Set up information model, exactly the type of data object, member property and incidence relation are carried out the standardization modeling, and according to this model structure, the resource that the GID interface is served is carried out initialization.As shown in Figure 1 and Figure 2.
Second step, the basic access service of setting up model information
This step has realized the general and public reading and writing access services of GID, and general being used for visited the basic model data, and has all called the interface that this step realizes in the implementation procedure of HSDA and TSDA, so this step is the precondition of carrying out subsequent step.The synchronization of access mechanism of request/reply has been used in the basic access service of model information, comprises the content of three aspects: read access, write access and update event notice.
The read access service provides the inquiry mode of no filtercondition or the inquiry mode of band filtercondition.
The inquiry of no filtercondition as shown in Figure 3, it has shown the process flow diagram of a resource query process.The user at first obtains corresponding resource ID (as shown in Figure 4) by the identification service that public service provides by the unified resource identifier, these resource IDs is imported into corresponding resource query interface again and obtains the Query Result that meets the demands.Referring to 5, resource identifier adopts URL(uniform resource locator) (URI's) and resource ID to identify the model resource.URI is one and meets the URI standard characters as name.For example, the URI of a transformer ' s type can be " http://utility.com/Planning/Production/ CIM-schema-
cimu09a#Transformer"。Resource ID is the ID numeral of 128 compact (16 bytes), such as 2500001402.
The method that realizes the inquiry of band filtercondition is: realized being similar to the SQL(data base query language) in the attribute filtrator of " where " if-clause, describe filtercondition by this structure, so filtering services can obtain institute's information of interest from data set provider more accurately.
Write access comprises and upgrades one or more objects, the property value of new resources more, and object can be created or destroy to the life cycle of control object, and main interface operation is create_resource_ids () and apply_updates (), shown in 6.
Create_resource_ids (): generate one or more ResourceID, use for apply_updates ().
Apply_updates (): be used for carrying out a series of renewal operations.The DifferenceModel module records apply_updates () operation carry out before and carry out the difference that cause data the back.
Update event is responsible for notifying user's particular data to change, and guarantees the data access consistance.Renewal and update content by Callback interface notice user data.
The 3rd goes on foot, sets up high-speed data access interface HSDA and time series data access interface TSDA
The read and write access of the model-based notebook data of realizing except second step, also need further to visit real time data and historical data, this just needs to realize HSDA and TSDA.
At first, the user creates the data access session to service request, i.e. visit connects, and service end provides the service browsed and data exchange service, and service finishes the back session and destroys.
HSDA provides, and to browse service be to the user with the HSDA view shows.Browsing interface is divided into:
(1) DAIS::DataAccess::Node::IHome and DAIS::Node::Iterator
(2) DAIS::DataAccess::Item::IHome and DAIS::DataAccess::Item::Iterator
(3) DAIS::Type::IHome and DAIS::Type::Iterator
(4)DAIS::Property::IHome。
They are respectively applied to excavate object such as view node in the HSDA view.In order to raise the efficiency, querying method does not directly return all resource results, but returns an iterator (Iterator) that points to the resource results sequence, passes through iterator, the user can order access queries result, therefrom read the view resource description of arbitrary number.
As shown in Figure 7, TSDA has inherited the interface of HSDA, namely HSDA is expanded, and increases the management to time series data.As can be seen from Figure 8, TSDA has defined four class objects:
(1) server and client side's object comprises DAIS::HDA::Server, DAIS::HDA::Session, DAIS::HDA::Callback.DAIS::HDA::Server has inherited the interface of DAIS::Server, and client is connected to the DAIS::HDA::Server object, realizes the DAIS::HDA::Callback object simultaneously.
(2) connecting interface, DAIS::HDA::Server realizes the DAIS::HDA::Connection interface
(3) browse object, client obtains concrete browsing data object by the DAIS::HDA::Browse::Home object, for example
1.DAIS::HDA::Node::Home be used for showing the hierarchical structure of practical object.
2.DAIS::HDA::Item::Home be used for showing the Item information of practical object, i.e. property value.
Browse interface 3.DAIS::Type::Home be used for type, show object such as Substation, VoltageLevel, Bay, PowerTransformer etc.
Browse 4.DAIS::Property::Home be used for generic attribute, show object such as Measurement.maxValue, Naming.name, Naming.description etc.
Below with the measurement in the transformer station---the power of generator is example, illustrates how to realize GID interface accessing data.Introduce in detail below:
The first step: set up information model
Set up the data model of relevant device and measurement in the transformer station.At first according to as shown in Figure 1 information model structure initialization transformer station model information.Node is used for describing device object and measuring object in the transformer station.Item describe to measure corresponding data value, such as unit what are, higher limit information such as what are.Item is included in the middle of the Node.Type and Property are used for describing fundamental type and the attribute information of Node and Item respectively.They have the unique resource identifier of id.Fig. 2 has provided an example of initialization information model, label label list registration is according to the title of object, pathname represents the path of data object in tree-shaped node, type has illustrated data type, time_stamp is the date of measuring last update, value is concrete value, and quality is the quality of data, is used for representing that value is available (good) or disabled (bad).In this example, label is that the Item of P is power, and type has shown that this Item is for measuring type.
Second step, the basic access service of implementation model information
The information model of setting up by the first step is the often basic data of visit of GID interface service, and the service access function of these data must satisfy not only simply but also requirement efficiently, so the interface of realizing is only finished basic function, as Fig. 4, shown in Figure 5.
The power measurement model service interface of realizing in this step mainly comprises:
Get_resource_ids(): the uri according to the power object obtains power object id.
Get_uris(); Id according to the power object obtains power object uri.
Get_values(): as long as the id of power measurement is provided, can obtain this measuring object, by this object, can further obtain attribute informations such as measured value, measuring unit.
Get_related_values(): obtain other objects that are associated with the power object, return the association attributes of all affiliated partners by iterator.
By above interface, can obtain the model essential information.
The 3rd goes on foot, sets up high-speed data access interface HSDA and time series data access interface TSDA
At first, call function create_data_access_session() sets up session, thereby set up the data connection, perhaps call function create_data_access_session_for_view () sets up session at a certain view, this view has comprised required measurement data, has only the data of power measurement P such as " view 1 " lining, so just can set up session with " view 1 ", like this, just can only obtain the data of power measurement P.
Do not have which view available if know service end, can calling find_views () function, to return available view selective.
Then, at the data creation data clauses and subclauses that will obtain.Call the method create_group(of DAIS::DataAccess::Group::IHome_var class) create the data group, as shown in Figure 9, a plurality of measuring objects that comprise power measurement P can be placed in this group, so that unified management.The state variable DAIS::DataAccess::Group::State of data group comprises a plurality of member's parameters, and wherein update_rate has represented renewal frequency, represents to upgrade in each second the actual value of a power for " 10000 " such as value; Active represents whether activate, if value if value is not so just carried out real-time update for " false " expression un-activation, only shows currency in " true " expression activation; Locale_id arranges id for data object.
Simultaneously, set up call back function Callback () for the new data object of creating, make the data can real-time update.As shown in figure 10.
When the value of power changes, call back function Callback object changes by the automatic notification data of on_data_change function, return the data after the renewal, this function returns id and the occurrence of object, identified the power that changes and change after value.
At last, after data, services finishes, destroy object by calling destroy () method, comprise and destroy the session of creating.Like this, guarantee effective utilization of system resource.
Claims (1)
1. method that realizes IEC61970 GID interface is characterized in that the step of this method is as follows:
The first step, set up information model, information model has been described the master data object that has access to by the GID interface service;
Set up information model, exactly the type of data object, member property and incidence relation are carried out the standardization modeling, and according to this model structure, the resource that the GID interface is served is carried out initialization; Information model has been described the master data object that has access to by the GID interface service;
Second step, the basic access service of setting up model information, this step has realized the general and public reading and writing access services of GID, the general visit basic model data that are used for;
The synchronization of access mechanism of request/reply has been used in the basic access service of model information, comprises the content of three aspects: read access, write access and update event notice:
The read access service provides the inquiry mode of no filtercondition or the inquiry mode of band filtercondition; The inquiry of wherein not having filtercondition obtains corresponding resource ID by the identification service that public service provides by the unified resource identifier, these resource IDs is imported into corresponding resource query interface again and obtains the Query Result that meets the demands; The method that wherein realizes the inquiry of band filtercondition is: realized being similar to the attribute filtrator that SQL is " where " if-clause in the data base query language, described filtercondition by this structure;
Write access comprises and upgrades one or more objects, the property value of new resources more, and object can be created or destroy to the life cycle of control object;
Event is responsible for notifying the user specific data variation, and guarantees the data access consistance;
Event is to notify user data to upgrade by the mode of setting up call back function (call back function is a kind of interface interchange mode of computer software module, but realization event is notified), and obtains the content of renewal;
The 3rd goes on foot, sets up high-speed data access interface HSDA and time series data access interface TSDA, the read and write access of the model-based notebook data of realizing except second step, also need further to visit real time data and historical data, this just need set up HSDA and TSDA;
The process of setting up HSDA is:
At first set up data access and connect, this connects and is used for sending request to service end, and service end is returned the result of request by this connection;
Then, at the data creation data clauses and subclauses that will obtain; Simultaneously, set up call back function Callback () for the new data clauses and subclauses of creating, when data change, enter call back function automatically, can carry out data and handle in this function, therefore, by this call back function, data can be carried out real-time update automatically;
At last, service end provides the service browsed and data exchange service, and service finishes the back session and destroys; HSDA provides, and to browse service be that the HSDA Data View is showed the user, and the user can select to inquire about which data wherein; When the user sends request of data to service end, after requiring the needed data of inquiry, service end is returned the result of inquiry, but in order to improve transfer efficiency, to reduce data quantity transmitted, service end is not directly returned all resource results, but returns an iterator that points to the resource results sequence, passes through iterator, the user can order access queries result, therefrom read the view resource description of arbitrary number;
Set up the process of TSDA:
TSDA has expanded the interface of HSDA, and it comprises the partial function of HSDA interface, simultaneously, increases the management to time series data;
Identical with HSDA, at first set up data access and connect, then, at the data creation data clauses and subclauses that will obtain, set up call back function, then, service end provides the service browsed and data exchange service, when no longer needing to serve, destroys session;
Different with HSDA is, in data exchange service, and time range that can specific data, thus obtain historical data in certain time period; This is the part of TSDA expansion.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103607434A (en) * | 2013-11-04 | 2014-02-26 | 四川长虹电器股份有限公司 | Interaction method of network communication data |
| CN103700032A (en) * | 2013-12-19 | 2014-04-02 | 国家电网公司 | Construction method of power grid regulation and control integration panoramic data platform |
| CN104503735A (en) * | 2014-11-04 | 2015-04-08 | 国网山东省电力公司青岛供电公司 | Consistency verification method for standard data exchange interface of power grid system |
| CN104965802A (en) * | 2015-06-11 | 2015-10-07 | 哈尔滨工程大学 | Multifunctional radio frequency comprehensive integrated apparatus and system based on CORBA standard |
| CN105574072A (en) * | 2015-11-11 | 2016-05-11 | 国网冀北电力有限公司信息通信分公司 | IEC61970 standard-based real-time database cluster realization method |
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| CN101964542B (en) * | 2010-08-20 | 2012-07-25 | 绍兴电力局 | Method for accessing IEC61970 dispatching EMS system to IEC61850 digital transformer substation |
| CN102957204B (en) * | 2012-02-08 | 2014-11-12 | 深圳市金宏威技术股份有限公司 | Intelligent simulation method and system of power distribution network terminal |
| CN102693129B (en) * | 2012-04-28 | 2015-10-21 | 广东电网公司电力科学研究院 | The model conversion method of IEC61850 to 61970 and device |
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| CN103607434A (en) * | 2013-11-04 | 2014-02-26 | 四川长虹电器股份有限公司 | Interaction method of network communication data |
| CN103700032A (en) * | 2013-12-19 | 2014-04-02 | 国家电网公司 | Construction method of power grid regulation and control integration panoramic data platform |
| CN104503735A (en) * | 2014-11-04 | 2015-04-08 | 国网山东省电力公司青岛供电公司 | Consistency verification method for standard data exchange interface of power grid system |
| CN104503735B (en) * | 2014-11-04 | 2016-06-08 | 国网山东省电力公司青岛供电公司 | A kind of network system standardized data Fabric Interface consistency desired result method |
| CN104965802A (en) * | 2015-06-11 | 2015-10-07 | 哈尔滨工程大学 | Multifunctional radio frequency comprehensive integrated apparatus and system based on CORBA standard |
| CN104965802B (en) * | 2015-06-11 | 2017-04-12 | 哈尔滨工程大学 | Multifunctional radio frequency comprehensive integrated apparatus and system based on CORBA standard |
| CN105574072A (en) * | 2015-11-11 | 2016-05-11 | 国网冀北电力有限公司信息通信分公司 | IEC61970 standard-based real-time database cluster realization method |
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