CN109710420A - A kind of access method of IEC61850 model - Google Patents
A kind of access method of IEC61850 model Download PDFInfo
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- CN109710420A CN109710420A CN201811364186.3A CN201811364186A CN109710420A CN 109710420 A CN109710420 A CN 109710420A CN 201811364186 A CN201811364186 A CN 201811364186A CN 109710420 A CN109710420 A CN 109710420A
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Abstract
The present invention relates to a kind of access method of IEC61850 model, 1, be based on a variety of IEC61850 model access interfaces of DBus Bus Wrapper, enable applications to through DBus bus with long-range and local two ways Access Model information；2, in IEC61850 model information deposit database for the first time, classification storage is carried out according to the functional restraint of IEC61850 model, by the high information deposit memory of access frequency, the low information of access frequency is still remained in database；3, after service registration to DBus bus, application call IEC61850 model access interface stores and accesses IEC61850 model, if the address of service is that local service, DBus bus can call directly local service, if address of service is that remote service, DBus bus can be called directly by network implementations remote service.The present invention efficiently solves the problems, such as that model cannot be shared, and greatly improves the compatibility and scalability of model access function；Reduce memory consumption, improves the starting speed of equipment.
Description
Technical field
The invention belongs to power system network fields of communication technology, and in particular to a kind of IEC61850 based on DBus bus
The access method of model.
Background technique
IEC61850 is the basis of unified substation network communication standard and power system network communication, it is constructed
System comprehensive, detailed description and specification are made that substation communication network and system, mainly by model, service, specific
The parts such as service mapping form, and wherein model file is generally XML format.It is logical as IEC61850 service area and client
All data objects of analytic modell analytical model file generated are crossed, and are communicated based on this.The current almost all of country
IEC61850 communication is all based on development kit secondary development, deposits in memory after model analyzing, and model access is confined to one
In a process.With the enhancing of the function of device, the expansion of data volume in substation, especially distributed development, this reality
Existing mode has the following problems:
1. multiple application program access same model information, especially multi-CPU architectures or distributed situation cannot be supported
Under be more difficult to realize directly access same model, constrain the scalability of system.
Under the mode that 2.IEC61850 server end and client are run simultaneously, respective analytic modell analytical model is needed, cannot be shared
Model information, when because of respective analytic modell analytical model memory consumption it is larger, parsing the time it is longer, cause support data volume have a fixed limit
System, it may not be possible to meet live needs, and it is slow to will lead to application program launching.
IEC61850 server end, IEC61850 client independent operating under normal circumstances, are used alone each self-analytic data
Model information has had already appeared the demand that the two is run in same environment at present.Current each application program is isolated operation, is not had
There is the shared of model information, since data volume is big, the duplicate model information of the two will cause huge memory consumption and memory wave
Take.
Summary of the invention
DBus is a kind of low latency, low overhead, the inter-process communication mechanisms of high availability, agreement be it is binary, keep away
Serialization process is exempted from, communication efficiency is higher.Its use is towards objectification, one-to-one between support process and multi-to-multi equity
Communication, and support to be communicated by network.In the communication of multi-to-multi, the role of background process is needed to go point to turn message, when
When one process hair message gives another process, first send out message will forward information to background process, then by background process
Purpose process, whole process are automatically performed by bus, do not need additionally to intervene.
In order to solve the above technical problems, the present invention utilizes DBus inter-process communication mechanisms, IEC61850 model is realized in design
Directory access interface, model define access interface etc., realize IEC61850 server, client while accessing unified model letter
The function of breath has achieved the purpose that model information is shared, while being gone back in memory according to the storage of message reference frequency optimization data
It is that can effectively save the memory headroom of model occupancy in database；In addition, there are many language (such as C/C++, Java), multi-platform
(Linux, Windows) supports DBus bus, the present invention also to substantially increase the compatibility of Application models parsing and can expand
Malleability.
The technical solution adopted in the present invention is as follows:
A kind of access method of IEC61850 model, comprising the following steps:
Step 1 is based on a variety of IEC61850 model access interfaces of DBus Bus Wrapper, allows the application to pass through
DBus bus accesses IEC61850 model information with long-range and local two ways；
Step 2, in IEC61850 model information deposit database for the first time, according to the functional restraint of IEC61850 model
Classification storage is carried out, the high model information of access frequency is stored in memory in subsequent use, by the low model of access frequency
Information still remains in database；
Step 3, after service registration to DBus bus, application call IEC61850 model access interface pair
IEC61850 model is stored and accessed, if the address of service is that local service, DBus bus can call directly local clothes
Business, if address of service is that remote service, DBus bus can be called directly by network implementations remote service.
Preferably, IEC61850 model access interface described in step 1 include: obtain directory interface, the interface that saves contents,
Defining interface is obtained, defining interface is saved, obtain data value interface and saves data value interface.
Preferably, the functional restraint of IEC61850 model described in step 2 include: MX, ST, CO, CF, DC, SP, SG, RP,
LG, BR, GO, GS, SV, SE, EX, SR, OR, BL, according to access frequency, can be MX, ST functional restraint, CO, RP, BR, LG,
The data of SP, SE, SG are stored in memory.
Preferably, application call IEC61850 model access interface described in step 3 carries out IEC61850 model
The specific method stored and accessed is: the acquisition directory interface of application call IEC61850 model access interface saves mesh
It records interface, obtain defining interface, the catalogue of IEC61850 model, definition are stored and accessed.
When being preferably based on the access of the library Glib realization IEC61850 model, the model access based on GDBus Bus Wrapper
Interface includes: to obtain server interface, save server interface, obtain logical device interface, save logical device interface, obtain
Data directory interface, preservation data directory interface, acquisition data definition interface, preservation data definition interface, acquisition data value connect
Mouth and preservation data value interface.
The model access interface for being preferably based on GDBus Bus Wrapper is divided into two classes: request function interface and receptance function
Interface, wherein receptance function interface includes: that request callback function and response send function.
Beneficial effects of the present invention:
1) access interfaces such as the model server catalogue based on DBus Bus Wrapper, logical device catalogue, can support multiple
Application program accesses same model information, efficiently solves the problems, such as that model cannot be shared, interface is consistent, multi-platform and multilingual
Support, greatly improve the compatibility and scalability of model access function.
2) by message structureization storage and the unified model access interface of designing a model, so that multiple application programs can be with
Same model information is accessed, while being stored in memory according to the visiting frequency decision model information of information and being still merely stored in
In database file, in the case where retaining access performance, reduce memory consumption, especially in IEC61850 server and
When IEC61850 client is run on the same device simultaneously, memory consumption can be greatly reduced, increase IEC61850 client
The quantity for connecting terminal, improves the starting speed of equipment.
Detailed description of the invention
Fig. 1 is the overall architecture schematic diagram of IEC61850 model access.
Specific embodiment
With reference to the accompanying drawing, embodiments of the present invention are illustrated.
A kind of access method of IEC61850 model, comprising the following steps:
Step 1 is based on a variety of IEC61850 model access interfaces of DBus Bus Wrapper, comprising: obtains directory interface, saves
Directory interface obtains defining interface, saves defining interface, obtaining data value interface and save data value interface, so that using journey
Sequence can access IEC61850 model information by DBus bus with long-range and local two ways.
Step 2, in order to balance information can be accessed and access performance, is stored in for the first time in IEC61850 model information
When database, classification storage is carried out according to the functional restraint of IEC61850 model, in subsequent use by mould that access frequency is high
Type information is stored in memory；The low model information of access frequency is still remained in database, can directly inquire number if you need to access
According to library.
Come the model information of IEC61850 by DBus bus service transmission, being stored in database profession makes so as to subsequent
With.But in actual use, some information frequency of use are higher, such as quantity of state, analog quantity, and some information frequency of use compare
It is low, such as description information, extension information, and the information for having a large amount of frequency of use low in model information, if application program is institute
There is data information to be all resolved in memory, a large amount of memories can be occupied, but all information may be all accessed.
IEC61850 model functional restraint (Function Constrain) has following a few classes: MX, ST, CO, CF, DC, SP,
SG, RP, LG, BR, GO, GS, SV, SE, EX, SR, OR, BL, according to access frequency, can be MX, ST functional restraint, CO, RP,
The data of BR, LG, SP, SE, SG are stored in memory.
It should be distinguish according to functional restraint in model information deposit database for the first time, so that application program is again
Starting is parsed according to unlike signal.This implementation not only can make all data that can access, the high number of frequency
It is unaffected according to access performance, and a large amount of memory is saved, the terminal quantity of support is increased, while can be with increasing terminal
Start speed.
In preservation model, application program stores model information in the database according to functional restraint sign-posting, and
According to mark the high information initializing of access frequency into memory；Subsequent access is to read in memory by functional restraint differentiation
It takes and still reads in the database.It, only need to be according to mark access frequency if application program is restarted after having saved model
High information initializing is into memory.
Step 3, after service registration to DBus bus, the storage of application call IEC61850 model obtains interface
IEC61850 model catalogue, definition are stored and accessed.If the address of service is local service, DBus bus can be direct
Local service is called, if address of service is remote service, DBus bus can be called directly by network implementations remote service.
DBUS bus is C/S model bus, and application program first choice needs that the address for calling service is arranged, if address of service
It is distant place address, when subsequent calls service interface can call a distant place to service automatically, if service is local address, call service
Local service can be called when interface automatically.
In the present invention 61850 models storage be divided into from top to bottom three layers: Server (server), LD (logical device) and
Data (data), 61850 model informations are primarily referred to as the hierarchical relationship of Server, LD and Data and the definition of data.
All model informations are initialised in memory in application program operation Shi Douhui in tradition, especially in a model
A large amount of memory can be occupied in the more situation of data volume, and influences the starting speed of application program, in the present invention, applied
When program starts, only telemetering amount, quantity of state are defined in initialization memory according to it, (such as quantity of state occupies 1 byte, then
The corresponding space for generating 1 byte in memory), then the data amount check being initialised in memory will greatly reduce, it is interior
Occupancy decline is deposited, for the data infrequently accessed, definition and value storage are in the database.High distant of frequency of use
Measurement, quantity of state can be constrained to MX and ST, other data handle request Shi Kegen in service side using less or even do not use
The storage location of the data is searched according to functional restraint.
For application program in storage model information, calling model information memory interface, local bus can be according to the ground of setting
Location is forwarded request, and the bus where servicing receives the information transmitted, believes by server process and storage model
Database is ceased, server calls receptance function completes this calling.
When application program obtains or saves data value, firstly, server is according to the data directory (packet received
Containing functional restraint) judge that the data are in memory or in the database, if in memory, finding the number in memory
According to position execution value reading or storage；If in the database, carrying out data base querying, the data are found then again
Execute similar operations.
Above-mentioned access process is summarized, as follows, other accessing steps are described by taking preservation model catalogue " Server " as an example
It is similar:
1. model information program first has to registration service, calls and access for other applications.
2. application initialization, setting address of service (each application program setting is primary)
3. application call request function ieslab_iec61850_model_call_set_server_dir_sync,
Function parameter is Server title, and the DBus bus where application program forwards service according to the address of setting.
After 4. the DBus bus where service receives request, according to the call back function handle_ of prior service registration
Set_server_dir calls processing locality function, after receiving Server title, stores into database, finally uses
Ieslab_iec61850_model_complete_set_server_dir function returning response, and returned to and answered by DBus
Use program.
5. application program carries out processing confirmation after the response results for receiving DBus forwarding.
The library Glib is the library of an open source, and operation strategies are wider, cross-platform, is easy to learn and use, in addition to this may be used also
To use the DBus bus interface etc. provided inside QT.Below using the library Glib as embodiment, embodiment party of the invention is illustrated
Formula.
The library Glib is most common C language function library under Linux platform, it has portable and practicability well.
It is GDBus based on the DBus application bus interface that GLib is realized, developer provides the interface description file of an XML format, leads to
It crosses tool and generates corresponding GDBus request and response interface code, be then compiled into application call.
Model access interface based on GDBus Bus Wrapper includes obtaining server interface (GetServerDir), saving
Server interface (SetServerDir) obtains logical device interface (GetLDDir), saves logical device interface
(SetLDDir), data directory interface (GetDataDir) is obtained, data directory interface (SetDataDir) is saved, obtains data
Defining interface (GetDataDef) saves data definition interface (SetDataDef), obtains data value interface (GetDataVal)
And save data value interface (SetDataVal).Part of interface based on XML format is described as follows:
The word used in the above-mentioned code automatically generated is all common meaning in IT technology, further without making
Explanation.
Interface is divided into two classes: request function interface and receptance function interface, wherein receptance function interface includes request callback
Function and response send function.
Generating corresponding request interface using Core Generator has:
①gboolean ieslab_iec61850_model_call_get_server_dir_sync
(IeslabIec61850Model*proxy, GVariant**out_ServerList, GCancellable*cancellable,
GError**error)；
②gboolean ieslab_iec61850_model_call_set_server_dir_sync
(IeslabIec61850Model*proxy, GVariant*arg_ServerList, GCancellable*cancellable,
GError**error)；
③gboolean ieslab_iec61850_model_call_get_lddir_sync(
IeslabIec61850Model*proxy, const gchar*arg_Server, GVariant**out_
LDList, GCancellable*cancellable, GError**error)；
④gboolean ieslab_iec61850_model_call_set_lddir_sync(
IeslabIec61850Model*proxy, const gchar*arg_Server, GVariant*arg_LDList,
GCancellable*cancellable, GError**error)；
⑤gboolean ieslab_iec61850_model_call_get_data_dir_sync
(IeslabIec61850Model*proxy, const gchar*arg_DatRef, GVariant**out_DataList,
GCancellable*cancellable, GError**error)；
⑥gboolean ieslab_iec61850_model_call_set_data_dir_sync
(IeslabIec61850Model*proxy, const gchar*arg_DatRef, GVariant*arg_DataList,
GCancellable*cancellable, GError**error)；
⑦gboolean ieslab_iec61850_model_call_get_data_def_sync
(IeslabIec61850Model*proxy, const gchar*arg_DatRef, GVariant**out_DataList,
GCancellable*cancellable, GError**error)；
⑧gboolean ieslab_iec61850_model_call_set_data_def_sync(
IeslabIec61850Model*proxy, const gchar*arg_DatRef, GVariant*arg_
DataList, GCancellable*cancellable, GError**error)；
⑨gboolean ieslab_iec61850_model_call_get_data_val_sync
(IeslabIec61850Model*proxy, const gchar*arg_DatRef, GVariant**out_DataType,
GVariant**out_DataList, GCancellable*cancellable, GError**error)；
⑩gboolean ieslab_iec61850_model_call_set_data_val_sync
(IeslabIec61850Model*proxy, const gchar*arg_DatRef, GVariant*arg_DataList,
GCancellable*cancellable, GError**error)；
Call back function interface corresponding with request has:
①gboolean(*handle_get_server_dir)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation)；
②gboolean(*handle_set_server_dir)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,GVariant*arg_ServerList)；
③gboolean(*handle_get_lddir)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,const gchar*arg_Server)；
④gboolean(*handle_set_lddir)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,const gchar*arg_Server,GVariant*arg_LDList)；
⑤gboolean(*handle_get_data_dir)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,const gchar*arg_DatRef)；
⑥gboolean(*handle_set_data_dir)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,const gchar*arg_DatRef,GVariant*arg_
DataList)；
⑦gboolean(*handle_get_data_def)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,const gchar*arg_DatRef)；
⑧gboolean(*handle_set_data_def)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,const gchar*arg_DatRef,GVariant*arg_
DataList)；
⑨gboolean(*handle_get_data_val)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,const gchar*arg_DatRef)；
⑩gboolean(*handle_set_data_val)(IeslabIec61850Model*object,
GDBusMethodInvocation*invocation,const gchar*arg_DatRef,GVariant*arg_
DataList)；
Response transmission function corresponding with request is as follows, and lower surface function is matched with call back function:
①void ieslab_iec61850_model_complete_get_server_dir
(IeslabIec61850Model*object,GDBusMethodInvocation*invocation,GVariant*
ServerList)；
②void ieslab_iec61850_model_complete_set_server_dir
(IeslabIec61850Model*object,GDBusMethodInvocation*invocation)；
③void ieslab_iec61850_model_complete_get_lddir(IeslabIec61850Model*
object,GDBusMethodInvocation*invocation,GVariant*LDList)；
④void ieslab_iec61850_model_complete_set_lddir(IeslabIec61850Model*
object,GDBusMethodInvocation*invocation)；
⑤void ieslab_iec61850_model_complete_get_data_dir
(IeslabIec61850Model*object,GDBusMethodInvocation*invocation,GVariant*
DataList)；
⑥void ieslab_iec61850_model_complete_set_data_dir
(IeslabIec61850Model*object,GDBusMethodInvocation*invocation)；
⑦void ieslab_iec61850_model_complete_get_data_def
(IeslabIec61850Model*object,GDBusMethodInvocation*invocation,GVariant*
DataList)；
⑧void ieslab_iec61850_model_complete_set_data_def
(IeslabIec61850Model*object,GDBusMethodInvocation*invocation)；
⑨void ieslab_iec61850_model_complete_get_data_val
(IeslabIec61850Model*object,GDBusMethodInvocation*invocation,GVariant*
DataType,GVariant*DataList)；
⑩void ieslab_iec61850_model_complete_set_data_val
(IeslabIec61850Model*object,GDBusMethodInvocation*invocation)；
From request and response interface name and XML describe service interface can be seen that between relationship, such as obtain clothes
It is engaged in device interface (GetServerDir), corresponding request interface C code is ieslab_iec61850_model_call_get_
Server_dir_sync is made of service name " ieslab.iec61850.model " and interface " GetServerDir ",
In " sync " be expressed as sync cap；Corresponding response interface is by two functions: call back function handle_get_server_dir
With receptance function ieslab_iec61850_model_complete_get_server_dir, naming method is similar, wherein
Complete indicates that completing service sends response.
The effect and name of other interfaces can be from the descriptions of the interface of corresponding XML format and XML format interface
Literal interpretation in obtain corresponding informance.
As shown in Figure 1, being the overall architecture schematic diagram that the present embodiment is accessed based on the IEC61850 model of GDBus.
The database access of IEC61850 server, IEC61850 client and local is based on GDBus package assembling using identical
Interface & Bus are communicated, wherein the GDBus interface generated by XML format interface description file includes connecing for three types
Mouthful: the request interface of initiator, the receiving interface of recipient and recipient's should ring return interface, therefore either
IEC61850 client or IEC61850 server end are also or same set of access interface can be used in local data base access,
The use complexity of developer is simplified, and IEC61850 server and client is made to have shared model information, especially
In the biggish situation of data information amount, memory consumption is greatly reduced, because not needing to parse so big model when initialization
Information, time-consuming are reduced, and accelerate the starting speed of application program.
Claims (6)
1. a kind of access method of IEC61850 model, which comprises the following steps:
Step 1 is based on a variety of IEC61850 model access interfaces of DBus Bus Wrapper, allows the application to total by DBus
Line accesses IEC61850 model information with long-range and local two ways；
Step 2, in IEC61850 model information deposit database for the first time, carried out according to the functional restraint of IEC61850 model
Classification storage；The high model information of access frequency is stored in memory in subsequent use, by the low model information of access frequency
It still remains in database；
Step 3, after service registration to DBus bus, application call IEC61850 model access interface is to IEC61850 mould
Type is stored and accessed, if the address of service is that local service, DBus bus can call directly local service, if service
Address is that remote service, DBus bus can be called directly by network implementations remote service.
2. a kind of access method of IEC61850 model according to claim 1, which is characterized in that described in step 1
IEC61850 model access interface include: obtain directory interface, the interface that saves contents, obtain defining interface, save defining interface,
It obtains data value interface and saves data value interface.
3. a kind of access method of IEC61850 model according to claim 2, which is characterized in that described in step 2
The functional restraint of IEC61850 model include: MX, ST, CO, CF, DC, SP, SG, RP, LG, BR, GO, GS, SV, SE, EX, SR,
The data that functional restraint is MX, ST, CO, RP, BR, LG, SP, SE, SG can be stored in memory according to access frequency by OR, BL
In.
4. a kind of access method of IEC61850 model according to claim 3, which is characterized in that answered described in step 3
It is with the specific method that routine call IEC61850 model access interface stores and accesses IEC61850 model:
The acquisition directory interface of application call IEC61850 model access interface, obtains defining interface at the interface that saves contents,
The catalogue of IEC61850 model, definition are stored and accessed.
5. a kind of access method of IEC61850 model according to claim 1-4, which is characterized in that be based on
When the access of IEC61850 model is realized in the library Glib, the model access interface based on GDBus Bus Wrapper includes: acquisition server
Interface saves server interface, obtains logical device interface, save logical device interface, obtain data directory interface, save number
It is connect according to directory interface, acquisition data definition interface, preservation data definition interface, acquisition data value interface and preservation data value
Mouthful.
6. a kind of access method of IEC61850 model according to claim 5, which is characterized in that be based on GDBus bus
The model access interface of encapsulation is divided into two classes: request function interface and receptance function interface, wherein receptance function interface includes: to ask
Call back function and response is asked to send function.
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