WO2017175925A1 - Passerelle pour une conversion entre iec61850 et dnp3.0 et procédé permettant de traiter un service demandé entre un client iec61850 et un esclave dnp3.0 - Google Patents

Passerelle pour une conversion entre iec61850 et dnp3.0 et procédé permettant de traiter un service demandé entre un client iec61850 et un esclave dnp3.0 Download PDF

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Publication number
WO2017175925A1
WO2017175925A1 PCT/KR2016/008904 KR2016008904W WO2017175925A1 WO 2017175925 A1 WO2017175925 A1 WO 2017175925A1 KR 2016008904 W KR2016008904 W KR 2016008904W WO 2017175925 A1 WO2017175925 A1 WO 2017175925A1
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iec61850
service
gateway
index
server
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PCT/KR2016/008904
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English (en)
Korean (ko)
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송병권
신인재
박지원
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서경대학교 산학협력단
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/142—Managing session states for stateless protocols; Signalling session states; State transitions; Keeping-state mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters 

Definitions

  • the present invention relates to a method for processing a service requesting a DNP3.0 slave from an IEC61850 and DNP3.0 conversion gateway and an IEC61850 client, and more specifically, to an IEC61850 that provides interoperability between an IEC61850 client and a DNP3.0 slave.
  • the present invention relates to a method for processing a service requesting a DNP3.0 slave from a DNP3.0 conversion gateway and an IEC61850 client.
  • a substation automation system is a system in which automation technology is integrated into a substation power facility, and aims to enhance monitoring / control functions. Since the publication of IEC61850, the international standard for designing and implementing substation automation systems in 2005, domestic construction of IEC61850-based digital substations will be promoted. However, when the corresponding power equipment is introduced, there is a communication compatibility problem between the existing power equipment installed and operating. Such existing power facilities also include DNP substations. In order to solve this problem of communication compatibility, the present invention designed and implemented a gateway based on International Standard Protocol 1815.1, which defines a matching method between IEC61850 and DNP information model.
  • An object of the present invention is to propose a method for processing a service requesting a DNP3.0 slave from an IEC61850 and DNP3.0 conversion gateway and an IEC61850 client, which are power protocols.
  • the gateway platform is based on International Standard 1815.1, which defines the matching method between the IEC61850 and DNP3.0 information models, which aims to provide communication and interoperability between IEC61850 client modules and DNP slaves in substations.
  • the above object of the present invention is an IEC61850 and DNP3.0 conversion gateway that provides interoperability between an IEC61850 client and a DNP3.0 slave, and is divided into a service matching table and an index that match an IEC61850 service name to a DNP3.0 service name.
  • IEC61850 server with IEC61850 structure array for exchanging data between IEC61850 protocol and DNP3.0 protocol
  • Achievement by the IEC61850 and DNP3.0 conversion gateways characterized in that it comprises a .0 master and a process image for transferring the index and service name from the IEC61850 server to the DNP3.0 master.
  • the IEC61850 structure array and the DNP3.0 structure array should be constructed identically, and the IEC61850 structure array may be constructed to include an IEC61850 pass and a DNP3.0 pass.
  • the IEC61850 server selects one IEC61850 structure using an IEC61850 path from among several IEC61850 structure arrays, and specifies the corresponding index. Meanwhile, the IEC61850 service name sent from the IEC61850 client is implemented to match the DNP3.0 service name using the service matching table.
  • the IEC61850 server does not need to send a plurality of pieces of data because only the service name and the index are used to the DNP3.0 master.
  • the IEC61850 structure array and DNP3.0 structure array are implemented to include rules applied to data conversion, IEC61850 path, DNP3.0 path, Function Constraint (FC), Logical Device (LD), and Logical Node (LN).
  • FC Function Constraint
  • LD Logical Device
  • LN Logical Node
  • the gateway of an embodiment according to the present invention has interoperability between two protocols, and since the gateway is configured in a DNP-XML file reference format, it is easy to modify later.
  • the retrieval of the two networks IEC61850 and DNP3 takes place independently of each other.
  • the advantage of this structure means that no real-time transmission of all information request messages is required. This is possible because the DNP3 master polls the DNP3 slaves to update the process image with information, and when the process image is updated, the IEC61850 server module sends the information to the client module via the report function. Or, when the IEC61850 client module requests information, the IEC61850 server module polls the process image to obtain that information.
  • the gateway according to the present invention by using a structure array constructed using the same index, the amount of data transmitted can be reduced by using a Unix domain socket to transmit only the service name matched with the index.
  • Unix domain socket communication method is a structure that communicates using a file system, and because it is made in the kernel of the operating system, there is an advantage that the transfer speed is faster than the method using a network end.
  • 1 is a network hierarchy diagram for exchanging information between an IEC61850 client module and a DNP3 slave.
  • FIG. 2 is a process flow diagram for configuring a gateway for information exchange between an IEC61850 client module and a DNP3 IED.
  • 3 is an IEC61850 basic information model structure diagram.
  • FIG. 4 is a matching diagram illustrating an example in which IEC61850 ENUMERATED information is converted into a plurality of binary or one analog values.
  • 5 is an example of a screen showing a DNP3 Forge program.
  • FIG. 6 is an example of a process for generating a DNP-XML file including registration information.
  • FIG. 8 is a flowchart illustrating an information exchange function between an IEC61850 client and a DNP3 slave in a gateway according to the present invention.
  • 9 to 14 are tables hierarchically describing an IEC61850 information model having a hierarchical structure.
  • on or above means to be located above or below the target portion, and does not necessarily mean to be located above the gravity direction.
  • a portion such as an area, a plate, etc. is said “on or on top of” another part, it is not only in contact with or spaced apart from another part, but also in the middle of another part. It also includes cases where there is.
  • one component when one component is referred to as “connected” or “connected” with another component, the one component may be directly connected or directly connected to the other component, but in particular It is to be understood that, unless there is an opposite substrate, it may be connected or connected via another component in the middle.
  • the gateway consists of an IEC61850 server and a DNP3 Master.
  • the network hierarchy for information exchange between an IEC61850 client module and a DNP3 slave is shown in FIG.
  • the defined Process Image performs three functions as follows. 1) DNP-XML Mapping Analysis 2) DNP3-IEC61850 Data Mapping 3) DNP3-IEC61850 Service Mapping.
  • FIG. 2 is a flowchart illustrating a procedure for configuring a gateway for exchanging information between an IEC61850 client module and a DNP3 IED.
  • STEP 1 Configure DNP Master inside the Gateway.
  • the integrated engineer configures the DNP Master through the DNP-XML file containing the DNP IED information.
  • the Integration Engineer creates an Object Point Map to select the object data of DNP3 to be published in the IEC61850 information model format.
  • STEP 2 Construct the IEC61850 information model.
  • the integrated engineer determines the IEC61850 information model, which includes the Logical Node (LN), which represents the internal functions of the IEC61850-based digital substation. This creates an ICD file for the IEC61850 server inside the gateway.
  • LN Logical Node
  • STEP 3 Configure the gateway matching process.
  • the integration engineer selects the objects of DNP3 to expose to IEC61850 clients in the Object Point Map.
  • the selected object is matched according to the method defined in International Standard Protocol 1815.1.
  • a matched IID file and a DNP-XML file are generated.
  • STEP 4 Configure the IEC61850 client. In this step, you configure the IEC61850 client using an IID file. This produces a matched SCD file.
  • STEP 5 Finish configuring the gateway.
  • the server is configured through the matched SCD file.
  • the integrated engineer inputs additional information for the operation of the IEC61850 server and the DNP Master.
  • the CID file is then delivered to the completed gateway.
  • the gateway of the present invention analyzes the matching information between the IEC61850 information model and the DNP information model in the DNP-XML file.
  • IEC61850 information model 2) DNP3 information model, 3) specific matching method based on international standard protocol 1815.1, 4) DNP-XML file creation using DNP3 Forge 5) process by parsing DNP-XML file
  • DNP-XML file creation using DNP3 Forge 5 process by parsing DNP-XML file
  • the IEC61850 basic information model has a Server Class> Logical Device Class> Logical Node Class> Data Class> DataAttribute Class structure (FIG. 3), and an upper structure includes substructures.
  • Logical Device Class, Logical Node Class, Data Class, and DataAttribute Class refer to Name Class and give each Class a name.
  • the data model defines CDC (Common Data Class), CDC Attribute, and CDC Attribute Type.
  • the data model constitutes basic information for the IEC61850 to represent the functions inside the substation.
  • the CDC Attribute Type is a basic data type (Boolean, int, float ..., etc.).
  • CDC Attribute means information expressing CDC Attribute Type as Qulity, Analog Value, Time Stemp, Vector .. CDC is a data format that expresses the status information of substation equipment parts. There are status information such as Single Point Status (SPS), Double Point Status (DPS), Integer Status (INS) .... Each CDC consists of CDC Attributes.
  • SPS Single Point Status
  • DPS Double Point Status
  • INS Integer Status
  • Each CDC consists of CDC Attributes.
  • LN means the functions inside the substation.
  • LN is the system LN (N), switch function (X), protection function (P), protection-related function (R), control function (C), general reference function (G), interface and record keeping function (I), automatic
  • the first letter of the LN name is defined according to functions such as control function (A), measurement and weighing function (M), power transformer (Y) and instrument transformer (T).
  • Each LN consists of several CDCs that have meaning.
  • DNP3 is a standard communication protocol developed for communication between a central control unit such as a control system server and the RTU, RTU and IED.
  • the DNP3 model consists of three layers, the physical layer, the data link layer, and the application layer.
  • the data link layer supports serial communication Ethernet and TCP / IP.
  • the IEC61850 Data Object (hereinafter referred to as DO) is a collection of multiple Data Attributes (hereinafter referred to as DA).
  • DO Data Attributes
  • DNP3 Object does not support multiple attributes unlike DO of IEC61850. Therefore, DNP3 Object matches one or more DNP3 Objects to IEC61850 DO.
  • the ENUMERATED type of the IEC61850 information model can be matched with a plurality of binary inputs (hereinafter referred to as BI) or analogue inputs (hereinafter referred to as AI), and this method is defined in International Standard Protocol 1815.1.
  • BI binary inputs
  • AI analogue inputs
  • DNP3 Forge is a program that supports the creation of DNP3 XML Device Profile documents from Triangle MicroWorks, Inc. This selects the object of DNP3 to be exposed to the IEC61850 client (Fig. 5).
  • the selected object and DO of the IEC61850 information model are matched according to the method defined in 1815.1 of the International Standard. Enter additional information such as CDC and FC. As a result, a DNP-XML file containing matching information is generated (Fig. 6). 7 is an example of a DNP-XML file including registration information.
  • the rule is defined in 1815.1, an international standard, and defines that the float type of IEC61850 corresponds to the analog input of DNP3.
  • iec61850 ObjectReference with float32 primitive data type and cdc value of "MV" and MX of fc value.
  • the syntax is defined in the international standard IEC61850, where IED_0006PROT stands for 'LD', LLNO stands for 'LN', and Beh.stVal stands for 'DataObjec.DataAttribute'.
  • the gateway 100 is composed of an IEC61850 server 110 process, a DNP3 master process, and a process image 130.
  • the two processes exchange information between the IEC61850 server module and the DNP3 master by parsing the DNP-XML file generated by the DNP3 Forge.
  • the gateway 100 uses a structure array having a unique index for data mapping between the IEC61850 protocol and the DNP3.0 protocol.
  • the IEC61850 server module stores the matching information of the DNP-XML file in a mapping structure pointer array.
  • the structure consists of xmlChar type 1 Rule, 2 IEC61850 Path, 3 DNP3 Path, 4 FC (Function Constraint), 5 LD (Logical Device), 6 LN (Logical Node), and internal index 7 index Contains one internal variable.
  • the first internal variable "Rule” represents the defined matching rule of the International Standard.
  • the rule defines one or two different matching methods depending on the IEC61850 Common Data Class (CDC) and FC type. Since the IEC61850 CDC's information varies by IED manufacturer, the gateway developer should analyze the manufacturer's CID file and select the appropriate matching rule. Rules applied in the present invention will be described in the embodiments.
  • the second internal variable, IEC61850 path represents the IEC61850 information model with a hierarchical tree structure.
  • the format of the variable follows LD (Logical Device) / LN (Logical Node) .DO (Data Object) .DA (Data Attribute).
  • This variable stores the IEC61850 path tag information among the information extracted from the DNP-XML file.
  • the third internal variable, DNP3 path stores DNP3 path tag information among information extracted from the DNP-XML file. This information refers to the data pointer of the DNP3 information model.
  • FC, LD, and LN extract FC, LD, and LN information from "IEC61850 path" tag information and store them, respectively.
  • the other internal variable index indicates the structure array number.
  • This structure pointer array information is also implemented in the same manner as the DNP3 master module.
  • the gateway After saving the information of the IEC61850 server module and the DNP3 master module, the gateway establishes a session connection with the IEC61850 client module. If the session connection is successful, the IEC61850 client accepts the user's request from the GUI interface and performs the corresponding service.
  • the IEC structure array stored in the IEC61850 server 110 and the DNP structure array stored in the DNP3.0 server 150 are configured in the same structure array, and only the location (memory) stored in each is different.
  • the service for "GetDataValues" of the IEC61850 service will be described as an example.
  • the IEC61850 client module passes the IEC61850Path, including CDC, FC, etc., to the gateway for data collection requested by the user, and the IEC61850 server module inside the gateway is an internal variable of the IEC61850Path and "Mapping" structure pointer arrays received from the IEC61850 client module. 2 Find the array that matches the IEC61850 Path and transfer the corresponding 7 index to the DNP3 master module through the Unix domain socket.
  • DNP3 master module also analyzes 3DNP3 Path of the array by finding the array matching 7index which is an internal variable of the “Mapping” structure pointer array created before the linking process. The DNP3 master then requests the DNP3 slave for the value of the data pointer extracted from the DNP3 Path.
  • DNP3 master In the case of DNP3 master, it is implemented through thread and manages data value through semaphore. Upon receiving the requested value from the DNP3 slave, the DNP3 master sends the value to the IEC61850 server module via the Unix domain socket. The IEC61850 server module polling the Unix domain socket receives the result from the DNP3 master and sends it to the IEC61850 client module. This completes the service. As such, a series of information transfer processes between modules of a gateway is called a process image. Finally, communication between IEC61850 client module and DNP3 Slave is possible, and gateway has interoperability between two protocols, and it is easy to modify later because gateway is configured in DNP-XML file reference format.
  • a service is implemented using a service matching table.
  • Table 1 is an example of the service matching table 113 of IEC61850 to DNP3.0 of one embodiment according to the present invention.
  • IEC 61850-7-2 Class IEC 61850-7-2 Class Maps to Data GetDataValues Read (0x01) SetDataValues Write (0x02) GetDataDirectory Not mapped GetDataDefinition Not mapped
  • the service request is made from the IEC61850 client 10 to the IEC61850 server 110 (Step 10).
  • the requested service name and IEC61850 path are sent.
  • the IEC61850 server 110 determines an index of the structure array having the received IEC61850 path among a plurality of pre-built IEC61850 structure arrays.
  • IEC61850 service name GetDataValue
  • the service name (Read) of DNP3.0 is matched to the service name (Read) of DNP3.0.
  • the DNP3.0 service name (Read) matched with the index is transmitted to the DNP3,0 server 150 through Unix domain socket communication (Step 30).
  • the DNP3.0 server 150 selects an array having a received index among a plurality of IEC61850 structure arrays, and analyzes the DNP3 paths stored in the array. When the analysis is completed, the DNP3 master 150 requests the DNP3 slave using the service pointer and the value of the data pointer extracted from the DNP3 path (Step 40), and the DNP3.0 receives the DNP3. 0 transmits to master 150. The DNP3.0 master 150 transmits the result value to the IEC61850 server 110 through Unix domain socket communication (step 70), and the IEC61850 server 110 transmits the result value to the IEC61850 client 10 to complete the service. .
  • 9 to 14 are tables for hierarchically describing an IEC61850 information model having a hierarchical structure.
  • 9 is an example of a GUI of an IEC61850 client module.
  • the CID file used as an example is an IED information file named "D388_C617MEAS" and requests data of "MMXU01 $ MX $ A $ phsA $ cVal $ mag $ f" of the corresponding IED.
  • the Logical Node "MMXU” has a Data Object "A”.
  • Object A consists of a WYE class which is a Common Data Class (FIG. 9).
  • the WYE class has phsA as a Sub DataObject, and "phsA" consists of a CMV class (FIG. 10).
  • the CMV class has cVal as a DataAttribute, and "cVal” has a vector type (FIG. 11).
  • the Vector type has "mag” as an Attribute, and the "mag” consists of an AnalogueValue type (Fig. 12).
  • the AnalogueValue type has "f” as an attribute (Fig. 14).
  • variable "f” may be defined according to two mapping rules of "FLOAT_TO_AI” or “FLOAT_TO_AI_FP", and in the embodiment, the gateway is configured according to the matching rule of "FLOAT_TO_AI" (FIG. 14).

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Abstract

Le but de la présente invention peut être réalisé au moyen d'une passerelle pour une conversion entre IEC61850 et DNP3.0 pour fournir une opérabilité mutuelle entre un client IEC61850 et un esclave DNP3.0, la passerelle pour une conversion étant caractérisée en ce qu'elle comprend : un maître de DNP3.0 qui est divisé en un index et une table de mise en correspondance de services pour mettre en correspondance un nom de service IEC61850 avec un nom de service DPN3.0, est divisé en un index et un serveur IEC61850 pourvu d'un réseau de structures IEC61850 pour échanger des données entre un protocole IEC61850 et un protocole DPN3.0, et est pourvu d'un réseau de structures DNP3.0 pour échanger des données entre le protocole IEC61850 et le protocole DNP3.0; et une image de traitement pour distribuer les index et les noms de service depuis un serveur IEC61850 au maître DNP3.0.
PCT/KR2016/008904 2016-04-06 2016-08-12 Passerelle pour une conversion entre iec61850 et dnp3.0 et procédé permettant de traiter un service demandé entre un client iec61850 et un esclave dnp3.0 WO2017175925A1 (fr)

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KR101813066B1 (ko) 2017-09-06 2017-12-28 홍석민 Dnp3.0과 iec 61850을 수용하기 위한 스카다 게이트웨이 장치 및 그의 프로토콜 변환방법
KR101861576B1 (ko) * 2017-12-18 2018-05-28 대웅전기공업(주) Iec61850 기반 현장정보 처리반
KR20210060223A (ko) 2019-11-18 2021-05-26 서경대학교 산학협력단 IEC61850 연동을 위한 다중 IoT 프로토콜 변환 방법
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