KR101579929B1 - Method and recording medium for compatibility between iec61850 and soap - Google Patents

Abstract

The present invention relates to a method of interoperability between IEC61850 and SOAP, which enables mutual compatibility between IEC61850 and SOAP by using SOAP communication in a substation using IEC 61850, .
A method of interoperability between IEC61850 and SOAP according to the present invention includes a first step of mapping an information model of IEC61850 and a service used in IEC61850 to a WSDL format, a step of mapping a SOAP header and a SOAP And a third step of representing data in the form of a SOAP message based on the SOAP Header and the SOAP Body constructed through the second step.

Description

METHOD AND RECORDING MEDIUM FOR COMPATIBILITY BETWEEN IEC 61850 AND SOAP [0002]

The present invention relates to a technology for implementing compatibility between heterogeneous communication protocols, and more particularly, to a method for interoperability between IEC61850 and SOAP and a recording medium for implementing message compatibility through matching between IEC61850 and SOAP.

IEC61850 is a substation automation communication protocol that can be used both inside and outside substations. IEC 61850 expresses the information of the substation as a logical object and defines the data message in a standardized form.

On the other hand, the Simple Object Access Protocol (SOAP) is a communication protocol in which a message composed of XML (eXtensible Markup Language) is transmitted through widely known HTTP, HTTPS, and the like.

SOAP is a communication protocol between objects used in Web services, and serves as a communication role in Web services. Web services consist of three components: UDDI, SOAP, and WSDL. UDDI stores the WSDL and allows the SOAP service provider to register the WSDL with the UDDI to use the web service. The service user who wants to use the web service uses the SOAP communication using the WSDL to use in UDDI.

On the other hand, in order to access the substation using IEC61850 in the conventional smart grid construction, IEC61850 should be constructed very much.

However, if such SOAP communication can be used for data transmission / reception of digital substation, smart distribution system and existing distribution automation system based on IEC61850 substation automation communication protocol, the substation can be more efficiently managed and operated.

As a result, in order to apply SOAP communication to IEC61850 and manage substation more efficiently, interoperability technology between IEC61850 and SOAP becomes necessary.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for implementing interoperability between IEC 61850 and SOAP by using SOAP communication in a substation using IEC 61850, IEC61850, and SOAP, which enable transmission and reception of data, and a recording medium therefor.

According to an aspect of the present invention, there is provided a method of interoperating between an IEC61850 and an SOAP, comprising: a first step of mapping an information model of IEC61850 and a service used in the IEC61850 into a WSDL format; A second step of constructing a SOAP Header and a SOAP Body based on the SOAP Header and SOAP Body constructed through the second step, and a third step of representing data in the form of a SOAP message based on the SOAP Header and the SOAP Body constructed through the second step.

According to the method for interoperability between IEC61850 and SOAP and the recording medium thereof according to the present invention, it is possible to transmit and receive information such as a message using SOAP communication in a substation using IEC61850, and the compatibility, reliability, And it is also possible to exchange real-time power information between a supplier and a consumer.

1 is a block flow diagram illustrating a method of interoperability between IEC 61850 and SOAP in accordance with the present invention;
2 is a block diagram showing a configuration of a SOAP message type according to the present invention;
3 is a conceptual diagram showing matching between a data model of IEC61850 and SOAP according to the present invention.
4 is a diagram illustrating a mapping method for matching data items and SOAP among services used in the IEC61850 ACSI of the present invention.
5 is a diagram illustrating a mapping method for matching SOAP with a server class of IEC61850 according to the present invention.
6 is a diagram illustrating a mapping method for matching SOAP with a logical device of IEC61850 according to the present invention;
7 illustrates a mapping method for SOAP matching between a logical node of IEC 61850 of the present invention and SOAP;
8 is a diagram illustrating a mapping method for matching CDC and SOAP in IEC61850 of the present invention.
9 is an example showing a SOAP message of GetDataValue (MMXU) of IEC61850 of the present invention.
10 illustrates an example of using a SOAP message by a SOAP client and an IEC61850 server according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In the following, preferred embodiments, advantages and features of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block flow diagram illustrating a method of interoperability between IEC61850 and SOAP according to the present invention, and FIG. 2 is a block diagram showing a configuration of a SOAP message type of the present invention.

The present invention is a technology for implementing compatibility between heterogeneous communication protocols, and is characterized in that interoperability between IEC61850 and SOAP is targeted, and mutual message compatibility is realized through matching between respective factors constituting them.

First, the Simple Object Access Protocol (SOAP), which is a compatible object of the present invention, is a communication protocol for transmitting a message composed of XML (eXtensible Markup Language) through widely known HTTP, HTTPS and the like.

The client requests the server a message, and the server sends a response message to the client's message. SOAP is based on XML-RPC, Envelope, Header, Body and Interaction neutrality concept.

On the other hand, the message type of SOAP consists of SOAP Header, SOAP Body, and SOAP Fault. SOAP is a software system for interacting with different kinds of computers and systems. SOAP is defined by the World Wide Web Consortium (W3C).

Here, the SOAP Header is optional in the entire SOAP message and is not used when it is unnecessary. The SOAP Header contains security and transaction information. SOAP Body is the most important and core technology in messages using SOAP. The SOAP Fault contains information necessary for communication between the server and clients using SOAP. The SOAP Fault is optional and serves to contain error information when the data or information requested by the client is not correct.

Next, the IEC61850, which is a compatible object of the present invention, is a substation automation communication protocol that can be used both inside and outside of a substation. IEC 61850 models the substation information as a logical object and defines the data message as a standardized data structure.

The present invention is configured to match the IEC61850 information model with SOAP in order to implement interoperability between IEC61850 and SOAP. According to a preferred embodiment, the IEC61850 information model to SOAP conversion part is composed of IEC61850-4 data model and IEC61850-7 -2 (ACSI: Abstract Communication Service Interface).

IEC 61850-7-2 ACSI defines the basic information model. IEC61850 basic information model consists of a server class> Logical Device Class> Logical Node Class> Data Class> DataAttribute Class, Inherits the superstructure. The Logical Device Class, Logical Node Class, Data Class, and DataAttribute Class refer to the Name Class and give each Class a name.

The data model is composed of a logical node class, a logical node (LN), a logical node data (LN Data), a common data class (CDC: Common Data Class, CDC DataAttribute, and CDC DataAttribute Types.

The data model defines a common data class (CDC), a CDC attribute (CDC Attribute), and a CDC attribute type (CDC Attribute Type).

The CDC Attribute Type refers to the basic data type (Boolean, int, float ...). CDC attribute means information expressed by "CDC Attribute Type" as "Qulity, Analog Value, Time Stemp, Vector" and the like. CDC is a data format that represents status information of substation equipment parts. It has status information such as Single Point Status (SPS), Double Point Status (DPS), and Integer Status (INS). Each CDC consists of a CDC attribute (CDC Attribute). A logical node (LN) refers to functions inside a substation. The logical node LN includes a system LN (N), a switch function X, a protection function P, a protection function R, a control function C, a general reference function G, I define the first letter of the logical node (LN) according to functions such as I, automatic control function A, measurement and metering function M, power transformer Y and instrument transformer T. Each logical node (LN) consists of several CDCs with meaning.

The present invention is configured to implement interoperability between heterogeneous protocols using such characteristics. More specifically, the present invention relates to a method of mapping an information model of IEC61850 and a service item used in IEC61850 to a WSDL structure (S10) A step of constructing a SOAP Header and a SOAP Body (S20), and a step of representing (S30) in the form of a SOAP message according to the established SOAP Header and the SOAP Body.

Hereinafter, an IEC61850 matching method will be briefly described with reference to FIG. 2, and then a detailed matching method of each sector constituting IEC61850 will be described in detail.

FIG. 3 is a conceptual diagram illustrating matching between a data model of IEC 61850 and SOAP according to the present invention. The IEC 61850 information model illustrated in FIG. 3 is a data model of an IEC 61850-4 data model of IEC 61850, Respectively.

3, the LN class of IEC61850 is matched to the LN_Tag of the SOAP Body, the LN_Attribute is matched to the LN_Attribute_Tag of the SOAP Body, the CDC of IEC61850 is matched to the CDC_Tag of the SOAP Body, and the CDC Attribute of IEC61850 is matched to the SOAP Body Lt; RTI ID = 0.0 > Attribute_Tag < / RTI >

In order to match each item constituting the IEC61850 information model to the SOAP, a process of mapping the information model of the IEC61850 and the service item (i.e., the service name) used in the IEC61850 into the WSDL form is included do.

Here, the WSDL was created to standardize a method for specifying Web service system functions and published in W3C. WSDL is an XML-based MarkUp language for describing information about the services provided. The server providing the service describes the WSDL of the service and specifies it on the Internet. The client using the service generates a SOAP message based on the WSDL provided by the server and communicates with the server.

Hereinafter, a preferred embodiment of a specific mapping method for matching IEC61850 information model and SOAP will be described.

4 is a diagram illustrating a mapping method for matching data items and SOAP among services used in the IEC61850 ACSI of the present invention. The embodiment of FIG. 4 shows a method of mapping a service function to a WSDL for a GetDataValue used when a client inquires data and a SetDataValues used when setting a value.

Referring to FIG. 4, VarData is included as a parameter of GetDataValue declared in WSDL, and the data type is a string type. VarName is written in the WSDL so that a minimum of 0 and a maximum of 1 can be used. In response to GetDataValue, I declared GetDataValueResponse. The response of GetDataValueResponse is ResponseData and the data type is a string type.

ResponseData declared a minimum of 0 and a maximum of 1 available. SetDataValue that sets the value for data (Data) has VarName and Value as parameters. VarName and Value are of type string and can have a minimum of 0 and a maximum of 1.

In response to SetDataValue, it is declared as SetDataValueResponse and it is stored in ResponseData as response message. The data type of ResponseData is a string type and can have a minimum of 0 and a maximum of 1.

5 is a diagram illustrating a mapping method for SOAP matching between the server class of IEC61850 and the SOAP of the present invention. Referring to FIG. 5, in the server class mapping method of IEC61850 according to the present invention, a ServiceAccessPoint existing in a server class is configured to map to a string data type for use in SOAP.

In addition, LogicalDevice, File, TPAppAssociation, and MCAppAssociation are configured to map to strings because there is no data type mapped in SOAP. In addition, the service used by the server class (Server Class) is declared and configured for use by clients and servers using SOAP. The WSDL shown in the lower part of FIG. 5 corresponds to the WSDL of the server and the service declaration.

6 is a diagram illustrating a mapping method for SOAP matching between a logical device of IEC61850 of the present invention and a SOAP. Referring to FIG. 6, the logical device mapping method of IEC61850 according to the present invention maps an LDName and an LDRef of a logical device class to a string type, and a logical node is a LogicalNode "And declare it in the WSDL for use.

7 is a diagram illustrating a mapping method for matching SOAP with a logical node of IEC61850 according to the present invention. Referring to FIG. 7, a logical node mapping method of IEC61850 according to the present invention is a WSDL for use of an MMXU among SOs in a logical node, and at least LNName and EEHealth among MMXUs are declared in WSDL , And other necessary parts to WSDL.

LNName is mapped to a string, EEHealth is configured to create an "INS" datatype, and TotW, TotAr, TotVA, TotVAr, TotPF, HZ are configured to create an "MV" datatype and declare it in the WSDL.

8 is a diagram illustrating a mapping method for matching CDC and SOAP in IEC61850 of the present invention. The embodiment of FIG. 8 shows a WSDL mapping for using the CDC data attribute (CDC DataAttribute) indicating the attribute type of the logical node in the SOAP. A description of the Measured Value (MV) class among the CDC is shown in FIG. That is, the CDC mapping method of IEC61850 of the present invention is configured to map data in the form of "int" for range, q, t in the data attribute (DataAttribute) of the MV.

9 is an example showing a SOAP message of GetDataValue (MMXU) of IEC61850 of the present invention. As described above, the information model of IEC61850 and the service name used in IEC61850 are mapped in the WSDL format. When the SOAP Header and the SOAP Body are constructed based on the mapped WSDL and the GetDataValue service is used, A SOAP message as shown in FIG. 9 is generated.

The SOAP Envelope contains the SOAP Body information, and the SOAP Body is configured to define the service name, data name, and data type.

10 is a diagram illustrating an example of using a SOAP message of a SOAP client and an IEC61850 server according to the present invention. Referring to FIG. 10, a client using SOAP declares a SOAP message and transfers it to IEC61850 Gateway. IEC61850 analyzes SOAP information and transmits it to IEC61850 server.

The IEC61850 server transmits the response data to the IEC61850 Gateway, and the IEC61850 Gateway creates the SOAP message through the mapping method described above and transmits the SOAP message to the SOAP client.

The method of interoperability between IEC61850 and SOAP according to the present invention described and illustrated above can be realized in the form of a program and realized through an electric / electronic device. The term " electrical < / RTI > electronic device " refers to a computer, and includes any electronic device including a central processing unit and a memory, such as a smart terminal.

In this case, the recording medium of the present invention has a function of mapping the information model of IEC61850 and the service name used in IEC61850 to the electrical and / or electronic device in a WSDL format, a function of building a SOAP header and a SOAP body based on the mapped WSDL, And a program for realizing a function of representing data in the form of a SOAP message based on the constructed SOAP Header and SOAP Body.

According to a preferred embodiment, the recording medium of the present invention includes VarName of a string type as a parameter of GetDataValue of IEC61850 and declares GetDataValueResponse as a response to the GetDataValue, and the response of the GetDataValueResponse is a string type of the response data to be recorded in the response data.

In addition, the recording medium of the present invention includes a program for realizing a function of mapping a ServiceAccessPoint, a LogicalDevice, a File, a TPAppAssociation, and an MCAppAssociation existing in a Server Class of an IEC61850 information model to a string type, May be a medium readable by an electronic device.

In the recording medium of the present invention, the logical device of the IEC61850 information model maps the LDName of the logical device class (Logical Device Class) to the LDEef of the logical type (string type), maps the LogicalNode of the IEC61850 information model, May be a medium readable by an electric / electronic apparatus that records a program for realizing a function of declaring the WSDL so as to create and use a data type called "LogicalNode ".

Also, the recording medium of the present invention is configured to declare at least LNName and EEHealth among the MMXUs of a logical node (LogicalNode) in the WSDL, the LNName to a string, and the EEHealth to create an INS data type And can be a medium readable by an electric / electronic apparatus in which a program for realizing the program is further recorded.

In addition, the recording medium of the present invention is a medium that can be read by an electric / electronic apparatus that records a program for realizing a function of creating a data type "MV" and declaring it in the WSDL, such as TotW, TotAr, TotVA, TotVAr, TotPF, Lt; / RTI >

Further, the recording medium of the present invention can be read by an electric / electronic device recording a program for further realizing a function of mapping data in the form of "int" for range, q, t in the data attribute (DataAttribute) Lt; / RTI >

While the preferred embodiments of the present invention have been described and illustrated above using specific terms, such terms are used only for the purpose of clarifying the invention, and it is to be understood that the embodiment It will be obvious that various changes and modifications can be made without departing from the spirit and scope of the invention.

Such modified embodiments should not be understood individually from the spirit and scope of the present invention, but should be regarded as being within the scope of the claims of the present invention.

Claims (15)

delete delete delete As a method of interoperability between IEC61850 and SOAP,
A first step of mapping the information model of IEC61850 and the service used by IEC61850 to WSDL format;
A second step of constructing a SOAP Header and a SOAP Body based on the WSDL mapped through the first step; And
And a third step of representing data in the form of a SOAP message based on the SOAP Header and the SOAP Body constructed through the second step,
In the first step,
Wherein the ServiceAccessPoint, LogicalDevice, File, TPAppAssociation, and MCAppAssociation residing in a Server Class of the IEC61850 information model are mapped to a string type.
delete delete As a method of interoperability between IEC61850 and SOAP,
A first step of mapping the information model of IEC61850 and the service used by IEC61850 to WSDL format;
A second step of constructing a SOAP Header and a SOAP Body based on the WSDL mapped through the first step; And
And a third step of representing data in the form of a SOAP message based on the SOAP Header and the SOAP Body constructed through the second step,
In the first step,
The logical device of the IEC61850 information model maps LDName and LDRef of a logical device class to a string type and the logical node of the IEC61850 information model is a data type of "LogicalNode" To be created and used in the WSDL,
Wherein the LNName is mapped to a string and the EEHealth is configured to create an "INS " datatype. ≪ RTI ID = 0.0 > And SOAP.
8. The method of claim 7,
TotW, TotAr, TotVA, TotVAr, TotPF, and HZ of the MMXU are created to declare the "MV" data type in the WSDL, and the method of interoperability between IEC61850 and SOAP.
9. The method of claim 8,
And mapping the data to the "int" type for range, q, t in the data attribute (DataAttribute) of the "MV".
delete delete In electrical and electronic devices,
Ability to map the information model of IEC61850 and the service used by IEC61850 to WSDL format;
A function of constructing a SOAP Header and a SOAP Body based on the mapped WSDL;
A function of representing data in the form of a SOAP message based on the constructed SOAP Header and SOAP Body; And
A program for realizing a function of mapping a ServiceAccessPoint, LogicalDevice, File, TPAppAssociation, and MCAppAssociation existing in a Server Class of the IEC61850 information model to a string type.
13. The method of claim 12,
The Logical Device of the IEC61850 information model maps the LDName and LDRef of the Logical Device Class to the string type and the LogicalNode of the IEC61850 Information Model maps the LogicalNode To the WSDL in order to create and use the WSDL.
5. The method of claim 4,
In the first step,
Wherein the IEC61850-4 data model or the IEC61850-7-2 (ACSI) information model of the IEC61850 information model is mapped in WSDL form.
5. The method of claim 4,
In the first step,
The VarName of the string type is entered as a parameter of the GetDataValue of the service used in the IEC61850, the GetDataValueResponse is declared in response to the GetDataValue, and the response of the GetDataValueResponse is mapped to the ResponseData of the string type The IEC61850 and the SOAP.

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