CN104199743B - Consistency checking method for historical data service interface of power distribution network - Google Patents
Consistency checking method for historical data service interface of power distribution network Download PDFInfo
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Abstract
The invention relates to a consistency check method for a historical data service interface of a power distribution network, which is based on an object management organization OMG, a data access tool DAF and a historical data access standard HDAIS of an industrial system, carries out a standard consistency test on the historical data standardized access interface of the power distribution network system on the basis of supporting an object-oriented common information model CIM, and feeds back error information if the consistency test fails, and waits for modification until the consistency check succeeds. The method provided by the invention can be used for accurately and comprehensively verifying the consistency of the system interface, so that barrier-free access to historical data among systems is ensured, and resource sharing is ensured. Historical data access interfaces can be efficiently and comprehensively verified, the development efficiency can be improved by more than 2 times according to the number of the interfaces actually supported by the system, resources are saved, and development and maintenance costs are reduced.
Description
Technical Field
The invention relates to a consistency verification method for a power distribution network historical data service interface, which is used for carrying out standardized verification on the historical data service interface based on an OMG HDAIS standard.
Background
Historical data access services of a power distribution network system must comply with a uniform standard interface HDAIS. HDAIS is an international standard promulgated by OMG and defines a series of operational interfaces for time series data management and access to enable various applications in the system to generate and use this historical data. The interface may provide historical data access or services based on a time series, such as a day, week, or longer. A typical example of historical data applied in power distribution network service application is load prediction, and power load prediction needs to be realized according to the change trend of the historical data. HDAIS provides a standardized mechanism for accessing historical data, thereby freeing the development of various historical data-based application functions from the obstacles of data acquisition.
At present, the understanding and realization of standardized historical data service specifications of many power distribution network related systems are different to different degrees, which causes certain difficulties for seamless integration and interoperation of different systems, and greatly weakens the automation process of a power distribution network system. Therefore, if the application integration is really realized in the power distribution network system, standard consistency check needs to be carried out, and an accurate and effective check method is a basic step and a fundamental measure for realizing the application integration.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the consistency verification method of the historical data service interface of the power distribution network, which can accurately and comprehensively verify the consistency of the system interface, ensure barrier-free access of historical data among systems and ensure resource sharing.
The technical scheme of the invention is as follows:
on the basis of supporting an object-oriented common information model CIM, a standard consistency test is carried out on a historical data standardized access interface of a power distribution network system, and if the standard consistency test fails, error information is fed back to wait for modification until the standard consistency test succeeds.
Preferably, the method specifically comprises the following steps: firstly, an HDAIS service object is created; the HDAIS interface is then verified.
Preferably, the verified content further comprises: data reading check, data updating check, entry attribute reading check, marking check, data replaying check, data object finding check, data model finding check and historical data object finding check.
Preferably, the HDAIS interface service implements access to time series data, and the interface objects provided by the service include: server and client objects, interfaces for connections, model browsing objects, and data access objects.
Preferably, the model browsing object includes: for browsing nodes, for browsing historical data entries, for browsing node types, for browsing node type attributes, for browsing historical data attributes, for browsing aggregation operations.
Preferably, the data access object includes: the history data is accessed, the modified history data is accessed, the attribute value of the history data is accessed, and the annotation information of the history data is accessed.
Preferably, the historical data access pattern comprises: and performing synchronous test or asynchronous test on all verified contents according to the synchronous or asynchronous characteristics of the interface in a synchronous data read-write mode, an asynchronous data read-write mode and a replay mode.
Preferably, the data reading verification, the data updating verification, the item attribute reading verification and the marking verification are all subjected to synchronous testing and asynchronous testing; the contents of the verification are specifically as follows:
data reading and checking: checking reading of basic data, checking of aggregation operation and checking reading of specified time point data;
and (3) data updating and checking: checking the insertion of basic data, checking the replacement of the basic data, checking the insertion and the replacement of the basic data, checking the deletion of data in a certain appointed time interval, checking the deletion of data at certain appointed time points;
entry attribute read check: checking the reading of the attribute of the entry;
and (4) marking and checking: checking the reading of the entry label and checking the insertion of the entry label.
Preferably, the content of the data replay check includes: verifying the playback of the basic data and verifying the playback of the data subjected to the aggregation operation;
the contents of the data object discovery check include: checking DAIS, wherein HDA, Browse, node _ home, item _ home, property _ home, type _ home, aggregate _ home and item _ attribute _ home of IHome are returned to be empty, and judging whether each function is supported; checking the support conditions of the DAIS, the HDA, the Browse, the Item, the find _ by _ parent, the find _ by _ type, the get _ pages and the get _ ids of the IHome; checking the support condition of the iterator; checking the support condition of each aggregation operation;
the data model finds that the content of the verification is whether the verification supports the invention of the data model;
and the historical data object finds that the verified content is a return value of the check attribute, and judges whether the browser interface is supported.
The invention has the following beneficial effects:
the consistency check method for the historical data service interface of the power distribution network realizes the consistency check of the historical data standardized access interface of the power distribution network system based on the latest international standard OMG/DAF/HDAIS on the basis of supporting an object-oriented general information model, thereby solving the standardization problem of a data access mechanism among different systems, saving the system maintenance and development cost, improving the development efficiency of application software of the power distribution network and promoting the interconnection and intercommunication among the systems.
The method provided by the invention can be used for accurately and comprehensively verifying the consistency of the system interface, so that barrier-free access to historical data among systems is ensured, and resource sharing is ensured. Historical data access interfaces can be efficiently and comprehensively verified, the development efficiency can be improved by more than 2 times according to the number of the interfaces actually supported by the system, resources are saved, and development and maintenance costs are reduced.
Drawings
Fig. 1 shows the HDAIS interface to be checked.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
On the basis of supporting an object-oriented common information model CIM, a standard consistency test is carried out on a historical data standardized access interface of a power distribution network system, and if the standard consistency test fails, error information is fed back to wait for modification until the standard consistency test succeeds.
The method comprises the following specific steps:
1) creating an HDAIS service object;
2) the HDAIS interface is checked, and the contents comprise: the data model discovery system comprises one or more of consistency verification, data reading verification, data updating verification, entry attribute reading verification, marking verification, data playback verification, data object discovery verification, data model discovery verification and historical data object discovery verification.
In the step 1), the HDAIS service object is specifically a historical data service part which passes through the HDAIS interface verification IEC61970 GID (electric power enterprise data integration interface standard).
The HDAIS interface service realizes the access to the time sequence data, and the interface object provided by the service comprises: server and client objects, interfaces for connections, model browsing objects, and data access objects.
The server and client objects include:
DAIS:: HDA:: Server, DAIS:: HDA:: Session, and DAIS:: HDA:: Callback.
The interface used for Connection is DAIS, HDA, Connection is realized by DAIS, HDA, Session.
The model browsing objects DAIS:: HDA:: Browse:: IHome is a collection of browsing objects of each specific data type, and creates the browsing objects of each specific data type. It is created in DAIS:: HDA:: Session, which is assigned a reference time at the time of creation.
The specific model browsing objects include the following:
DAIS, HDA, Node, IHome, and is used for browsing Nodes.
DAIS:: HDA:: Item:: IHome is used to browse the history data items.
DAIS:: Type:: IHome is used to browse node Type (Type), which is the same definition as in the DAIS specification.
DAIS:: Property:: IHome is used to browse node type properties (Property), which are the same as defined in the DAIS specification.
DAIS, HDA, ItemAttribute, IHome are used to browse the attributes of the historical data.
DAIS:: HDA:: Aggregate:: IHome is used for browsing aggregation operations (aggregates).
Specific data access objects include the following:
DAIS:: HDA:: ValueIO:: IHome is used to access historical data.
DAIS:: HDA:: ModifiedValue:: IHome is used to access the modified history data.
DAIS:: HDA:: ItemAttributeIO:: IHome is used to access the Attribute (Attribute) value of the history data.
DAIS:: HDA:: AnnotationIO:: IHome is used for accessing annotation information of historical data.
There are three historical data access patterns:
1. synchronous data read-write is realized by DAIS, HDA, ValueIO, SyncRead interface and DAIS, HDA, ValueIO, SyncUpdate interface;
2. asynchronous data reading and writing are realized through DAIS, HDA, ValueIO, Asyncread interface, DAIS, HDA, ValueIO, Asyncupdate interface and DAIS provided by an interface client, HDA, ValueIO and Callback interface;
3. PlayBack mode (PlayBack). The method is realized by the DAIS, the HDA, the ValueIO, the PlayBack interface and the DAIS, the HDA, the ValueIO and the PlayBacCallback interface provided by an interface client.
In step 2), the HDAIS interface checks the contents to be checked as shown in fig. 1.
The consistency check is the most basic check content, and is used for detecting the support degree of the system on the specification consistency, so as to decide which checks are to be performed later.
Except consistency check, the HDAIS interface is divided into 8 modules according to the consistency requirement of the HDAIS specification; meanwhile, according to the synchronous or asynchronous characteristics of the interface, the interior of 8 modules of the checking system is divided into synchronous testing and asynchronous testing. Not all checks have both synchronous and asynchronous testing. For example, data replay checks are asynchronous tests only, and data object discovery checks are synchronous tests only.
1. The consistency check is used for detecting the support degree of the system to the specification consistency. And checking which HDAIS interfaces supported by the verification system are available through the HDAISeupportedfunction interface in the DAIS, HDA, and verifying the supported HDAIS interfaces according to the content in the following steps.
For the checked system, the consistency check (check HDAISeuportedFunction) and the synchronous data reading check (check DAIS:: HDA:: ValueIO:: SyncRead) are required to pass, and other check contents are optional.
2. In data reading verification, data reading is completed through the following interfaces:
and (3) synchronization: DAIS:: HDA:: ValueIO:: SyncRead.
Asynchronization: DAIS: (HDA:: ValueiO:: Asyncread and DAIS: (HDA:: ValueiO:: Callback).
Both synchronous and asynchronous include the following checks:
1) read _ raw check, check Read of base data. Verification is made from the following aspects:
1.1) anomaly testing: exceptions to the test include exceeding the maximum return entry.
1.2) normal data: and checking whether the returned data is consistent with the real data, checking whether the reading of the boundary value is correct, and checking the condition that the starting time of the specified time period is later than the ending time.
1.3) entry with error: including no authority, invalid handle, invalid data interval, and more data, and the interval has no data.
2) And Read _ processed verification, which is used for verifying the aggregation operation and comprises the following steps: interpolation, time average, sum, average, number, average difference, variance, time of minimum value combination, time of minimum value, time of maximum value combination, maximum value, start value, end difference, optimum value, good value duration, bad value duration, value range, good value rate, bad quality, label number and the like.
Read _ processed verifies the reading of the processed data. Verification is made from the following aspects:
2.1) anomaly testing: exceptions to the test include exceeding the maximum return entry.
2.2) Normal data: and checking whether the returned data are consistent with the data really obtained through the aggregation operation, and checking the condition that the starting time of the specified time period is later than the ending time.
2.3) entry with error: including no permissions, invalid handles, invalid data intervals, unavailable aggregate operations, and more data, with no data in this interval.
3) Read _ at _ time verifies the reading of the specified point-in-time data. Verification is made from the following aspects:
3.1) Normal data: and checking whether the returned data is consistent with the real data.
3.2) entry with error: including no permissions, invalid handles, invalid data intervals.
3. And data updating and checking, wherein the data updating is completed through the following interfaces:
and (3) synchronization: DAIS: HDA: ValueIO: SyncUpdate and DAIS: HDA: modifiedValueIO: Sync.
Asynchronization: DAIS:: HDA:: ValueIO:: AsyncUpdate, DAIS:: HDA:: ValueIO:: Callback, DAIS:: HDA:: modified ValueIO:: Async and DAIS:: HDA:: modified ValueIO:: Callback.
The synchronization and asynchronization include the following checks:
1) insert checks, checking for insertion into the underlying data. Verification is made from the following aspects:
1.1) Normal data, checking that the data is correctly inserted into the target, can be read to verify that the insertion is correct.
1.2) there is an erroneous entry, including no authority, invalid handle, data already exists.
2) Replace check, check the replacement to the basic data. Verification is made from the following aspects:
2.1) Normal data, check if the data correctly replaces the target, can be read to verify if the replacement is correct.
2.2) there is an erroneous entry, including no authority, invalid handle, data is not present.
3) Insert _ replace checks, checking for insertion and replacement of the base data. Verification is made from the following aspects:
3.1) Normal data, check if the data replaces the target correctly, check if the data is inserted into the target, can use reading to verify if the replacement is correct.
3.2) there is an erroneous entry, including no authority, invalid handle.
4) And (4) performing Delete _ raw check, wherein the check deletes the data in a certain specified time interval. Verification is made from the following aspects:
4.1) normal deletion, checking whether the data is correctly deleted, and verifying whether the replacement is correct by using the reading in the previous step.
4.2) there is an erroneous entry, including no authority, invalid handle.
5) Delete _ at _ time checks that some data at a specified point in time is deleted. Verification is made from the following aspects:
5.1) normal deletion: and checking whether the data is deleted correctly or not, wherein the data is not deleted more or less. The read of the previous step can be used to verify that the replacement is correct.
5.2) entry with error: including handles without permissions, invalid.
4. And checking the reading of the item attribute, wherein the reading of the item attribute is completed through the following interfaces:
and (3) synchronization: DAIS, HDA, ItemAttributeoI, Sync, DAIS, HDA, ItemAttribute, and IHome.
Asynchronization: DAIS, HDA, ItemAttributeoO, Async, DAIS, HDA, Callback, DAIS, HDA, ItemAttribute and IHome.
1) And verifying Read _ attribute, and verifying the reading of the attribute of the item. Verification is made from the following aspects:
1.1) normal data, checking whether the returned data is consistent with the real data, checking the condition of the entry and checking the condition of the data.
1.2) entry with error: including no-authority, invalid handle, no data in this interval.
5. And (3) marking and checking, wherein marking reading and writing are completed through the following interfaces:
and (3) synchronization: DAIS, HDA, ItemAttributeoI, Sync, DAIS, HDA, ItemAttribute, and IHome.
Asynchronization: DAIS, HDA, ItemAttributeoO, Async, DAIS, HDA, ItemAttributeoO, Callback.
1) And reading verification, namely verifying the reading of the item label. Verification is made from the following aspects:
1.1) normal data, and checking whether the returned data is consistent with the real situation.
1.2) there is an erroneous entry, including no authority, invalid handle, invalid data interval, which is data free.
2) Insert check, insertion of an entry label. Verification is made from the following aspects:
2.1) normal data, and checking whether the inserted data is consistent with the real situation. Can be verified with Read.
2.2) the entry with error includes no authority, invalid handle, and no data in this interval.
6. Data replay verification, data replay through an asynchronous interface: DAIS:: HDA:: ValueIO:: Playback and DAIS:: HDA:: ValueIO:: Playback Callback.
1) Play _ raw _ with _ update check, which checks playback of the base data. Verification is made from the following aspects:
1.1) exception testing, the tested exception including exceeding the maximum return entry.
1.2) normal data, checking whether the returned data is consistent with the real data, checking the playback at different intervals, and checking the condition that the start time of the appointed time period is later than the end time.
1.3) there is an erroneous entry, including no-rights, invalid handle.
2) The Play _ processed _ with _ update check verifies playback of the data subjected to the aggregation operation. Verification is made from the following aspects:
2.1) exception testing, the tested exception including exceeding the maximum return entry.
2.2) normal data, checking whether the returned data is consistent with the data processed by the aggregation operation, checking the playback at different intervals, and checking the condition that the start time of the designated time period is later than the end time.
3) There are erroneous entries, including no-rights, invalid handles.
7. In the data object discovery check, the data object discovery is completed through the following interfaces: the DAIS comprises HDA, Browse, Node, IHome, DAIS, HDA, Browse, Item, IHome, DAIS, HDA, Browse, Aggregate and IHome.
1) And checking whether the DAIS, HDA, Browse, node _ home, item _ home, property _ home, type _ home, aggregate _ home and item _ attribute _ home of the IHome return to be empty or not, and judging whether each function is supported or not.
2) And checking the support conditions of the DAIS, the HDA, the Browse, the Item, the find _ by _ parent, the find _ by _ type, the get _ pages and the get _ ids of the IHome.
3) Checking support to Iterator.
4) The support of each aggregation operation is checked.
8. And (3) verifying data model discovery, wherein the data model discovery is completed through the following interfaces: DAIS:: Type:: IHome and DAIS:: Property:: IHome, checks whether data model discovery is supported.
9. And (3) finding and checking the historical data object, wherein the historical data object is completed through the following interfaces:
DAIS, HDA, Browse, IHome, Browse _ base _ time. The return value of this attribute is checked to see if the Browse interface is supported.
The above examples are provided only for illustrating the present invention and are not intended to limit the present invention. Changes, modifications, etc. to the above-described embodiments are intended to fall within the scope of the claims of the present invention as long as they are in accordance with the technical spirit of the present invention.
Claims (5)
1. A consistency check method for a historical data service interface of a power distribution network is characterized in that on the basis of an object management organization OMG, a data access tool DAF and a historical data access standard HDAIS of an industrial system, a standard consistency test is carried out on a historical data standardized access interface of the power distribution network system on the basis of supporting an object-oriented common information model CIM, if the standard consistency test fails, error information is fed back, and the power distribution network historical data standardized access interface waits to be modified until the standard consistency test succeeds;
the method comprises the following specific steps:
1) creating an HDAIS service object;
2) the HDAIS interface is checked, and the contents comprise: one or more of consistency check, data reading check, data updating check, entry attribute reading check, marking check, data playback check, data object discovery check, data model discovery check and historical data object discovery check;
the consistency check is used for detecting the support degree of the system to the standard consistency;
performing synchronous test and asynchronous test on data reading verification, data updating verification, entry attribute reading verification and marking verification; the contents of the verification are specifically as follows:
data reading and checking: checking reading of basic data, checking of aggregation operation and checking reading of specified time point data;
and (3) data updating and checking: checking the insertion of basic data, checking the replacement of the basic data, checking the insertion and the replacement of the basic data, checking the deletion of data in a certain appointed time interval, checking the deletion of data at certain appointed time points;
entry attribute read check: checking the reading of the attribute of the entry;
and (4) marking and checking: checking reading of the entry label and checking insertion of the entry label;
the content of the data playback verification includes: verifying the playback of the basic data and verifying the playback of the data subjected to the aggregation operation;
the contents of the data object discovery check include: checking DAIS, wherein HDA, Browse, node _ home, item _ home, property _ home, type _ home, aggregate _ home and item _ attribute _ home of IHome are returned to be empty, and judging whether each function is supported; checking the support conditions of the DAIS, the HDA, the Browse, the Item, the find _ by _ parent, the find _ by _ type, the get _ pages and the get _ ids of the IHome; checking the support condition of the iterator; checking the support condition of each aggregation operation;
the data model finds that the content of the verification is whether the verification supports the invention of the data model;
and the historical data object finds that the verified content is a return value of the check attribute, and judges whether the browser interface is supported.
2. The consistency check method for the historical data service interface of the power distribution network according to claim 1, wherein the HDAIS interface service implements access to time series data, and the interface object provided by the service includes: server and client objects, interfaces for connections, model browsing objects, and data access objects.
3. The method for consistency verification of historical data service interfaces of power distribution networks according to claim 2, wherein the model browsing objects comprise: for browsing nodes, for browsing historical data entries, for browsing node types, for browsing node type attributes, for browsing historical data attributes, for browsing aggregation operations.
4. The method for consistency verification of historical data service interfaces of power distribution networks according to claim 2, wherein the data access object comprises: the history data is accessed, the modified history data is accessed, the attribute value of the history data is accessed, and the annotation information of the history data is accessed.
5. The method for consistency verification of historical data service interfaces of power distribution networks according to claim 1, wherein the historical data access mode comprises: and performing synchronous test or asynchronous test on all verified contents according to the synchronous or asynchronous characteristics of the interface in a synchronous data read-write mode, an asynchronous data read-write mode and a replay mode.
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