CN112104496A - Universal substation IED self-discovery and self-configuration method and device based on UPnP - Google Patents

Abstract

Translated fromChinese

本发明一种基于UPnP的通用变电站IED的自发现和自配置方法及装置，针对现在智能变电站内大量IED接入和人工配置效率低、工作量大等问题，采用UPnP协议使通用IED能够在网络中被识别，通过变电站UPnP网络实现IED的自动发现，并通过UPnP控制来实现设备的自动配置；通过对设备的自发现，能够快速发现和识别设备，并对其进行自动配置，实现设备的远程配置，能够高效的实现设备的可控，在提高效率的同时保证可靠性和一致性。

The present invention is a method and device for self-discovery and self-configuration of IEDs in general substations based on UPnP, aiming at the problems of low efficiency and large workload of a large number of IEDs in the current smart substation access and manual configuration. It can realize the automatic discovery of IED through the UPnP network of the substation, and realize the automatic configuration of the equipment through the UPnP control; through the self-discovery of the equipment, the equipment can be quickly discovered and identified, and it can be automatically configured to realize the remote control of the equipment. The configuration can effectively realize the controllability of equipment, and ensure reliability and consistency while improving efficiency.

Description

Translated fromChinese

一种基于UPnP的通用变电站IED的自发现和自配置方法及装置A self-discovery and self-configuration method for a general substation IED based on UPnP anddevice

技术领域technical field

本发明涉及智能变电站的IED接入配置，具体为一种基于UPnP的通用变电站IED的自发现和自配置方法及装置。The invention relates to an IED access configuration of an intelligent substation, in particular to a method and device for self-discovery and self-configuration of a UPnP-based universal substation IED.

背景技术Background technique

智能变电站是智能电网中的重要一环，智能变电站领域涉及到的设备种类繁多，包括智能终端、保护装置、测控装置、远动终端等。由于设备类型不同，不同设备的功能具有很大的差异；不同设备厂商的设备通信方式也不统一。并且在智能变电站中智能电子设备IED(Intelligent Electronic Device)数量庞大，当IED接入变电站网络时，设备接入和人工配置需要消耗大量的人力资源，同时信息的准确性和一致性缺乏保证。其根本原因在于设备接入无法自动识别、设备无法远程配置以及人为操作存在差异性。Smart substation is an important part of smart grid. There are many types of equipment involved in the field of smart substation, including intelligent terminals, protection devices, measurement and control devices, and telecontrol terminals. Due to the different types of devices, the functions of different devices are very different; the device communication methods of different device manufacturers are not uniform. In addition, there are a large number of IEDs (Intelligent Electronic Devices) in smart substations. When IEDs are connected to the substation network, equipment access and manual configuration need to consume a lot of human resources, and the accuracy and consistency of information are not guaranteed. The fundamental reason is that the device access cannot be automatically identified, the device cannot be remotely configured, and there are differences in human operations.

传统变电站过程层设备与间隔层设备是通过电缆点对点连接的方式进行数据传输，过程层设备和站控层设备是通过RS485或以太网采用IEC 60870进行数据传输。而IEC61850下的智能变电站过程层设备和间隔层设备是通过光缆及以太网进行数据传输，过程层设备和站控层设备是通过以太网采用IEC 61850进行数据传输。由于大多数变电站设计模式局限于传统变电站，现传统变电站的数字化改造中，大多数变电站只是部分采用IEC61850设备(以间隔层设备为主)。因此，IEC 61850间隔层设备现呈现功能集成多样化、平台通用模块化特点。The traditional substation process layer equipment and bay layer equipment are connected by cable point-to-point for data transmission, and the process layer equipment and station control layer equipment use IEC 60870 for data transmission through RS485 or Ethernet. The process layer devices and bay layer devices of smart substations under IEC61850 use optical cables and Ethernet for data transmission, while process layer devices and station control layer devices use IEC 61850 for data transmission through Ethernet. Since most substation design modes are limited to traditional substations, in the digital transformation of traditional substations, most substations only partially use IEC61850 equipment (mainly bay layer equipment). Therefore, the IEC 61850 bay layer equipment now presents the characteristics of diversified functional integration and universal modularization of the platform.

现有工程技术方案是按照IEC 61850工程配置过程实施，在现有的变电站按照IEC61850工程实施过程中，IED能力描述文件(ICD文件)由设备制造商提供，系统规格文件(SSD文件)和全站系统配置文件(SCD文件)由电力设计院提供，IED实例配置文件(CID文件)则是由变电站工作人员由SCD文件导出。工作人员将SCD文件导出的CID文件及面向通用对象的变电站事件(GOOSE)文件下载至相应功能的设备，对设备功能进行测试后用于变电站正常工作中。对于变电站内的设备维护和功能变动，需要人为手动下载功能配置文件至设备中。同时，在目前变电站系统中，IEC 61850标准IED与IEC 60870规约IED目前都还存在，但两者间不能够进行信息交互。因此，通用IED需要进行不同协议间的转化，来实现IEC 61850标准IED与非IEC 61850标准IED间的信息交互，从而有利于系统集成调试。The existing engineering technical solution is implemented according to the IEC 61850 engineering configuration process. In the existing substation according to the IEC61850 engineering implementation process, the IED capability description file (ICD file) is provided by the equipment manufacturer, the system specification file (SSD file) and the whole station. The system configuration file (SCD file) is provided by the Electric Power Design Institute, and the IED instance configuration file (CID file) is derived from the SCD file by the substation staff. The staff downloads the CID file exported from the SCD file and the general object-oriented substation event (GOOSE) file to the corresponding functional equipment, and tests the equipment function for the normal operation of the substation. For equipment maintenance and function changes in the substation, it is necessary to manually download the function configuration file to the equipment. At the same time, in the current substation system, both the IEC 61850 standard IED and the IEC 60870 protocol IED still exist, but information exchange cannot be performed between the two. Therefore, the general IED needs to convert between different protocols to realize the information exchange between the IEC 61850 standard IED and the non-IEC 61850 standard IED, which is beneficial to system integration and debugging.

因此，在变电站从传统变电站向智能变电站改造的过程中存在以下问题：1、变电站内设备通信，从传统的电缆通信转变成网络通信，大量IED在网络中的识别和核准仍需要人工确认，人工确认IED在网络中的接入效率低下；2、现在IED功能趋于集成化和通用化，但IED在变电站中系统的相对位置功能较为固定，其功能配置需按照IEC 61850的工程配置流程，从全站配置文件(SCD)中生成相应的IED实例配置文件(CID)，虽然CID文件可以通过软件工具从SCD文件中自动生成，但是生成CID文件也需要人工导入IED中，对于IED的功能配置，人工配置和导入工作量较大；3、在传统变电站向智能变电站改造过程中，由于传统变电站可能在各个环节采用多种工控协议，而智能变电站在IEC 61850标准下制定了统一的协议，对于旧的IED来说存在新旧协议不同的问题。Therefore, the following problems exist in the transformation of substations from traditional substations to smart substations: 1. Equipment communication in substations has changed from traditional cable communication to network communication. The identification and approval of a large number of IEDs in the network still require manual confirmation. Confirm that the access efficiency of the IED in the network is low; 2. Now the IED function tends to be integrated and generalized, but the relative position function of the IED in the substation system is relatively fixed, and its function configuration needs to follow the IEC 61850 engineering configuration process, from The corresponding IED instance configuration file (CID) is generated in the site-wide configuration file (SCD). Although the CID file can be automatically generated from the SCD file by software tools, the generated CID file also needs to be manually imported into the IED. For the functional configuration of the IED, The workload of manual configuration and import is relatively large; 3. In the process of transforming traditional substations into smart substations, since traditional substations may use various industrial control protocols in each link, smart substations have developed a unified protocol under the IEC 61850 standard. For IEDs, there are different problems between the old and the new protocols.

如何实现IED接入时终端设备的自动发现，如何实现对IED的自动配置，以及如何满足IED不同协议间通信服务需求，是智能变电站中亟待解决的问题。How to realize the automatic discovery of terminal equipment when the IED is connected, how to realize the automatic configuration of the IED, and how to meet the communication service requirements between different protocols of the IED are the problems that need to be solved urgently in the intelligent substation.

发明内容SUMMARY OF THE INVENTION

针对现有技术中存在的问题，本发明提供一种基于UPnP的通用变电站IED的自发现和自配置方法及装置，使用方便，设计合理，能够实现通用IED的自发现和自动配置，以及通用IED的远程控制。Aiming at the problems existing in the prior art, the present invention provides a method and device for self-discovery and self-configuration of a UPnP-based general-purpose substation IED, which is easy to use and reasonable in design, and can realize self-discovery and automatic configuration of general-purpose IEDs, as well as general-purpose IEDs. remote control.

本发明是通过以下技术方案来实现：The present invention is achieved through the following technical solutions:

一种基于UPnP的通用变电站IED的自发现和自配置方法，包括，A self-discovery and self-configuration method for a UPnP-based universal substation IED, comprising,

接入智能变电站的通用IED，通过DHCP获取IP地址，利用UPnP协议使接入的通用IED受控制层UPnP控制点的控制，完成通用IED的自发现；Access the general IED of the smart substation, obtain the IP address through DHCP, and use the UPnP protocol to make the connected general IED controlled by the UPnP control point of the control layer to complete the self-discovery of the general IED;

根据控制层UPnP控制点的操作请求，确定接入的通用IED的具体功能，建立该通用IED的IEC 61850信息模型；According to the operation request of the UPnP control point of the control layer, the specific function of the general IED to be accessed is determined, and the IEC 61850 information model of the general IED is established;

根据该通用IED的IEC 61850信息模型，生成初始ICD文件，初始ICD文件经过系统配置工具生成SCD文件，再通过IED配置工具生成CID文件，通过CID文件配置接入的通用IED进行实例化，完成通用IED的自动配置。According to the IEC 61850 information model of the general IED, the initial ICD file is generated. The initial ICD file is generated by the system configuration tool to generate the SCD file, and then the CID file is generated by the IED configuration tool. Automatic configuration of IEDs.

优选的，通用IED的实例化后，建立IEC 61850通信服务；Preferably, after the instantiation of the generic IED, the IEC 61850 communication service is established;

与智能变电站内的IEC 61850标准IED通信时；When communicating with IEC 61850 standard IEDs in smart substations;

接入的通用IED根据IEC 61850通信协议进行通讯服务的映射，生成IEC 61850应用服务数据单元格式报文，并对其赋值；The connected general IED maps the communication service according to the IEC 61850 communication protocol, generates the IEC 61850 application service data unit format message, and assigns value to it;

与智能变电站内的非IEC 61850标准IED通信时；When communicating with non-IEC 61850 standard IEDs in smart substations;

接入的通用IED发送报文时，将IEC 61850标准IED的元数据存入IEC61850内存库中，通过协议转换生成对应非IEC 61850标准IED通信协议格式的报文；接收报文时，通过协议转换对非IEC 61850标准IED的报文进行解析，获取元数据，然后存入IEC 61850内存库，并映射到IEC 61850应用服务数据单元格式报文中。When the connected general IED sends a message, the metadata of the IEC 61850 standard IED is stored in the IEC61850 memory library, and the message corresponding to the non-IEC 61850 standard IED communication protocol format is generated through protocol conversion; when receiving the message, the protocol conversion is performed. Parse non-IEC 61850 standard IED messages, obtain metadata, store them in IEC 61850 memory library, and map them to IEC 61850 application service data unit format messages.

进一步，完成IED的自动配置，包括对IED基本功能的配置和运行参数的设置，同时根据CID和SCD文件完成IEC 61850内存库的配置；完成此步骤后，通知UPnP控制点通用IED的服务状态变化情况。Further, complete the automatic configuration of the IED, including the configuration of the basic functions of the IED and the setting of operating parameters, and complete the configuration of the IEC 61850 memory library according to the CID and SCD files; after completing this step, notify the UPnP control point of the general IED service status change Happening.

进一步，所述的IEC 61850通信服务包括，Further, the IEC 61850 communication service includes,

采用标准的XML解析读入包括CID文件和SCD文件的SCL模型配置文件，解析得到IED设备列表，根据GOOSE或者SV访问点提取收发通信相关的逻辑设备、逻辑节点以及相应的数据对象和数据属性，建立GOOSE或SV中发送报文和接收报文之间的对应关系，提供统一的抽象通信服务接口；Use standard XML parsing to read the SCL model configuration file including CID file and SCD file, parse to get the list of IED devices, and extract the logical devices, logical nodes and corresponding data objects and data attributes related to sending and receiving communication according to the GOOSE or SV access point. Establish the correspondence between sent and received messages in GOOSE or SV, and provide a unified abstract communication service interface;

根据通用IED获取的元数据，结合IEC 61850内存库文件，实现IEC61850的服务映射，建立应用服务数据单元ASDU和应用协议数据单元APDU数据包，完成对于IEC 61850格式包的赋值，将数据包发送至数据链路层，实现通用IED的IEC 61850通信服务。According to the metadata obtained by the general IED, combined with the IEC 61850 memory library file, the service mapping of IEC61850 is realized, the application service data unit ASDU and the application protocol data unit APDU data packet are established, the assignment to the IEC 61850 format packet is completed, and the data packet is sent to Data link layer, which implements IEC 61850 communication services for generic IEDs.

优选的，通用IED的实例化后，运行启用功能服务，并通知UPnP控制点通用IED的服务变换，取消设备注册，最终完成基于UPnP的通用变电站IED的自发现和自配置。Preferably, after the general IED is instantiated, run the enabling function service, notify the UPnP control point of the general IED service transformation, cancel the device registration, and finally complete the self-discovery and self-configuration of the UPnP-based general substation IED.

优选的，通用IED的自发现具体包括如下步骤，Preferably, the self-discovery of the general IED specifically comprises the following steps:

通用IED首先通过DHCP协议自动获取设备的IP地址，并注册UPnP根设备，然后初始化UPnP协议栈；The general IED first obtains the IP address of the device automatically through the DHCP protocol, registers the UPnP root device, and then initializes the UPnP protocol stack;

通用IED利用SSDP协议经由组播地址向网络广播自己的服务和资源，通过SSDP协议被UPnP网络中的控制点搜索并发现；The general IED uses the SSDP protocol to broadcast its own services and resources to the network through the multicast address, and is searched and discovered by the control points in the UPnP network through the SSDP protocol;

通用IED根据控制点获取的设备信息与控制点进行远程通信，接收控制消息并响应。The general IED performs remote communication with the control point according to the device information obtained by the control point, receives control messages and responds.

优选的，控制层UPnP控制点的控制包括订阅请求、取值请求和操作请求中的至少一种。Preferably, the control of the control layer UPnP control point includes at least one of a subscription request, a value request and an operation request.

优选的，通用IED通过UPnP网络上传自己的功能特性描述文件，根据接收到UPnP控制点下发对应功能特性描述的功能码，确定接入的通用IED的具体功能。Preferably, the general-purpose IED uploads its own function characteristic description file through the UPnP network, and determines the specific function of the connected general-purpose IED according to the function code corresponding to the function characteristic description issued by the UPnP control point.

优选的，所述通用IED的IEC 61850信息模型的建立，包括服务器、逻辑设备、逻辑节点、数据对象和数据属性的确定；具体的，Preferably, the establishment of the IEC 61850 information model of the general IED includes the determination of servers, logical devices, logical nodes, data objects and data attributes; specifically,

根据通用IED的功能，确定IEC 61850信息模型中的逻辑设备，包括控制、保护或测量；Identify logical devices in the IEC 61850 information model, including control, protection or measurement, based on the functionality of the generic IED;

然后利用不同逻辑节点来描述逻辑设备的功能，通过每个逻辑节点对应相应的数据对象以及数据属性。Then use different logical nodes to describe the function of the logical device, and each logical node corresponds to corresponding data objects and data attributes.

一种基于UPnP的通用变电站IED的自发现和自配置装置，包括，A self-discovery and self-configuration device for a UPnP-based universal substation IED, comprising,

设备自发现模块，用于通过DHCP获取IP地址，利用UPnP协议使接入的通用IED受控制层UPnP控制点的控制；The device self-discovery module is used to obtain an IP address through DHCP, and use the UPnP protocol to make the access general IED controlled by the UPnP control point of the control layer;

IEC 61850对象建模模块，用于根据控制层UPnP控制点的操作请求，确定接入的通用IED的具体功能，建立该通用IED的IEC 61850信息模型；The IEC 61850 object modeling module is used to determine the specific functions of the general IED accessed according to the operation request of the UPnP control point of the control layer, and establish the IEC 61850 information model of the general IED;

IED自动配置模块，用于根据该通用IED的IEC 61850信息模型，生成初始ICD文件，初始ICD文件经过系统配置工具生成SCD文件，再通过IED配置工具生成CID文件，通过CID文件配置接入的通用IED进行实例化。The IED automatic configuration module is used to generate the initial ICD file according to theIEC 61850 information model of the general IED. The initial ICD file generates the SCD file through the system configuration tool, and then generates the CID file through the IED configuration tool, and configures the general access through the CID file. The IED is instantiated.

与现有技术相比，本发明具有以下有益的技术效果：Compared with the prior art, the present invention has the following beneficial technical effects:

本发明针对现在智能变电站内大量IED接入和人工配置效率低、工作量大等问题，采用UPnP协议使通用IED能够在网络中被识别，通过变电站UPnP网络实现IED的自动发现，并通过UPnP控制来实现设备的自动配置；通过对设备的自发现，能够快速发现和识别设备，并对其进行自动配置，实现设备的远程配置，能够高效的实现设备的可控，在提高效率的同时保证可靠性和一致性。Aiming at the problems of low efficiency and large workload of a large number of IEDs in the current intelligent substation access and manual configuration, the invention adopts the UPnP protocol to enable the general IEDs to be identified in the network, realizes the automatic discovery of the IEDs through the UPnP network of the substation, and controls the IEDs through the UPnP To realize the automatic configuration of the equipment; through the self-discovery of the equipment, it can quickly discover and identify the equipment, and automatically configure it, realize the remote configuration of the equipment, and efficiently realize the controllability of the equipment. Sex and consistency.

进一步的，针对变电站内不同协议IED间通信服务问题，通过在IED中采用协议转换模块，实现不同协议间的服务映射，解决智能变电站内IEC61850标准IED与非IEC 61850标准IED通信服务的难题。Further, for the communication service problem between different protocol IEDs in the substation, the protocol conversion module is used in the IED to realize the service mapping between different protocols, and solve the problem of communication services between IEC61850 standard IEDs andnon-IEC 61850 standard IEDs in smart substations.

附图说明Description of drawings

图1为本发明实例中所述装置的结构功能框图；Fig. 1 is the structural function block diagram of the apparatus described in the example of the present invention;

图2为本发明实例中所述基于UPnP协议的设备自发现流程图；2 is a flow chart of the device self-discovery based on the UPnP protocol described in the example of the present invention;

图3为本发明实例中所述IEC 61850信息模型结构图；3 is a structural diagram of theIEC 61850 information model described in the example of the present invention;

图4为本发明实例中所述SCL文件结构框图；Fig. 4 is the SCL file structure block diagram described in the example of the present invention;

图5为本发明实例中所述IED自动配置流程图；Fig. 5 is the automatic configuration flow chart of the IED described in the example of the present invention;

图6为本发明实例中所述IEC 61850通信服务映射模型功能结构图；6 is a functional structure diagram of theIEC 61850 communication service mapping model described in the example of the present invention;

图7为本发明实例中所述IEC 61850协议报文通信流程图；Fig. 7 is the communication flow chart of theIEC 61850 protocol message described in the example of the present invention;

图8为本发明实例中所述协议转换流程图。FIG. 8 is a flow chart of the protocol conversion described in the example of the present invention.

具体实施方式Detailed ways

下面结合具体的实施例对本发明做进一步的详细说明，所述是对本发明的解释而不是限定。The present invention will be further described in detail below in conjunction with specific embodiments, which are to explain rather than limit the present invention.

本发明通过UPnP协议实现了通用IED的自发现过程，并实现了控制层UPnP控制点对于IED的远程控制。利用控制层UPnP控制点对IED的控制，实现IED的自动配置功能，根据IEC 61850信息模型，结合变电站描述语言SCL对IED进行自动配置。在实现变电站通用IEDIEC 61850标准的通信服务的基础上，利用协议转换模块，实现变电站内IEC 61850协议与其他协议的转换，实现不同协议IED之间的通信。其包括如下步骤。The invention realizes the self-discovery process of the general IED through the UPnP protocol, and realizes the remote control of the IED by the UPnP control point of the control layer. Using the control layer UPnP control point to control the IED, the automatic configuration function of the IED is realized. According to theIEC 61850 information model, the IED is automatically configured with the substation description language SCL. On the basis of realizing the communication service of thegeneral IEDIEC 61850 standard in the substation, the protocol conversion module is used to realize the conversion between theIEC 61850 protocol and other protocols in the substation, and realize the communication between IEDs with different protocols. It includes the following steps.

S1设备自发现：通用IED(Intelligent Electronic Device，智能电子设备)接入智能变电站，通过DHCP(Dynamic Host Configuration Protocol，动态主机设置协议)获取IP地址，利用UPnP(Universal Plug and Play，通用即插即用)协议实现设备的自发现，使通用IED能够受控制层UPnP控制点的控制，包括“订阅请求”，“取值请求”，“操作请求”等。S1 device self-discovery: Universal IED (Intelligent Electronic Device) is connected to the smart substation, obtains an IP address through DHCP (Dynamic Host Configuration Protocol), and uses UPnP (Universal Plug and Play, Universal Plug and Play) Use ) protocol to realize the self-discovery of the device, so that the general IED can be controlled by the UPnP control point of the control layer, including "subscription request", "value request", "operation request" and so on.

S2 IEC 61850设备建模：根据控制层UPnP控制点的操作请求，确定通用IED的具体功能，实现IED IEC 61850信息模型的建立，包括服务器、逻辑设备、逻辑节点、数据对象和数据属性。本发明中所描述的智能电子设备应由远方监视，此处的服务器是一个功能节点，允许其它功能节点访问数据，也能够向其它功能节点提供数据。本发明中所描述的智能电子设备至少是含有一个服务器的。S2 IEC 61850 equipment modeling: According to the operation request of the UPnP control point of the control layer, determine the specific functions of the general IED, and realize the establishment of theIED IEC 61850 information model, including servers, logical devices, logical nodes, data objects and data attributes. The intelligent electronic equipment described in the present invention should be monitored from a distance, and the server here is a functional node that allows other functional nodes to access data and can also provide data to other functional nodes. The intelligent electronic device described in the present invention contains at least one server.

S3 IED自动配置：根据IEC 61850信息模型，自动生成初始ICD文件(IEDCapability Description，IED能力描述文件)，经过系统配置工具和IED配置工具生成CID文件(Configured IED Description，IED实例配置文件)，进而配置IED，实现IED的实例化，完成IED的自动配置。S3 IED automatic configuration: According to theIEC 61850 information model, the initial ICD file (IEDCapability Description, IED capability description file) is automatically generated, and the CID file (Configured IED Description, IED instance configuration file) is generated by the system configuration tool and IED configuration tool, and then configured IED, realizes the instantiation of the IED, and completes the automatic configuration of the IED.

S4统一抽象通信服务：通过IEC 61850通信服务和协议转换模块实现通用IED的通信服务功能，具体实现步骤如下：S4 unified abstract communication service: realize the communication service function of general IED throughIEC 61850 communication service and protocol conversion module. The specific implementation steps are as follows:

S4.1针对变电站内IEC 61850标准IED间的通信，根据IEC 61850协议进行通信服务的映射，生成应用服务数据单元格式报文，并对其赋值，进行IED间通信。S4.1 For the communication betweenIEC 61850 standard IEDs in the substation, map the communication services according to theIEC 61850 protocol, generate application service data unit format messages, and assign values to them to communicate between IEDs.

S4.2针对变电站内IEC 61850标准IED与非IEC 61850标准IED间的通信，设计通用IED的通信服务映射方法，发送报文时，将IEC 61850标准IED的元数据存入IEC 61850内存库中，通过协议转换模块生成对应协议格式的报文；接收报文时，通过协议转换模块对非IEC 61850标准IED的报文进行解析，获取元数据，然后存入IEC 61850内存库，并映射到IEC61850应用服务数据单元格式报文中。S4.2 For the communication betweenIEC 61850 standard IEDs andnon-IEC 61850 standard IEDs in substations, a general IED communication service mapping method is designed. When sending messages, the metadata ofIEC 61850 standard IEDs are stored in theIEC 61850 memory library. The protocol conversion module generates the corresponding protocol format message; when receiving the message, the protocol conversion module parses thenon-IEC 61850 standard IED message, obtains the metadata, stores it in theIEC 61850 memory library, and maps it to the IEC61850 application in the service data unit format message.

本发明实例中所述的IEC 61850标准是基于通用网络通信平台的变电站自动化系统唯一国际标准，它是由国际电工委员会第57技术委员会(IECTC57)的3个工作组10,11,12(WG10/11/12)负责制定的。TheIEC 61850 standard described in the example of the present invention is the only international standard for the substation automation system based on the general network communication platform. 11/12) is responsible for formulating.

IEC 60870-5-104规约由国际电工委员会制定，104规约把IEC101的应用服务数据单元(ASDU)用网络规约TCP/IP进行传输的标准，该标准为远动信息的网络传输提供了通信规约依据。The IEC 60870-5-104 statute is formulated by the International Electrotechnical Commission. The 104 statute is a standard for transmitting the application service data unit (ASDU) of IEC101 with the network protocol TCP/IP. This standard provides a communication protocol basis for the network transmission of telecontrol information. .

IEC 61850标准下对智能电子设备IED的定义如下：“由一个或多个处理器组成，具有从外部源接收和传送数据或控制外部源的任何设备，即电子多功能仪表、微机保护、控制器，在特定的环境下在接口所限定范围内能够执行一个或多个逻辑接点任务的实体。The definition of an IED under theIEC 61850 standard is as follows: "Any device consisting of one or more processors that has the ability to receive and transmit data from or control an external source, i.e. electronic multifunction instruments, microcomputer protection, controllers , an entity that can perform one or more logical joint tasks within the scope defined by the interface in a specific environment.

UPnP协议是通过定义和发布基于开放、因特网通讯网协议标准的UPnP设备控制协议来实现网络中的各种设备能够相互无缝连接，并简化相关网络的实现。The UPnP protocol is to define and publish the UPnP device control protocol based on the open, Internet communication network protocol standard to realize that various devices in the network can be seamlessly connected to each other, and to simplify the implementation of related networks.

变电站配置语言SCL是IEC 61850采用的变电站专用描述语言，基于可拓展标记语言按照W3C可拓展标记语言模式描述了SCL语言的句法规定。The substation configuration language SCL is a substation-specific description language adopted byIEC 61850. Based on the extensible markup language, it describes the syntax requirements of the SCL language according to the W3C extensible markup language model.

IED能力描述文件(ICD文件)，描述了IED提供的基本数据模型及服务，但不包含IED实例名称和通信参数，由装置厂商提供给系统集成厂商The IED capability description file (ICD file) describes the basic data model and services provided by the IED, but does not include the IED instance name and communication parameters. It is provided by the device manufacturer to the system integrator

全站唯一的全站系统配置文件(SCD文件)，描述所有IED的实例配置和通信参数、IED之间的通信配置以及变电站一次系统结构，由系统集成厂商根据ICD完成。The unique total station system configuration file (SCD file) of the whole station, which describes the instance configuration and communication parameters of all IEDs, the communication configuration between IEDs and the primary system structure of the substation, which is completed by the system integrator according to the ICD.

每个设备有一个的IED实例配置文件(CID文件)，由设备厂商根据SCD文件中本IED相关配置生成。Each device has an IED instance configuration file (CID file), which is generated by the device manufacturer according to the relevant configuration of the IED in the SCD file.

面向通用对象的变电站事件(GOOSE)是IEC 61850标准中用于满足变电站自动化系统快速报文需求的一种机制。Generic Object Oriented Substation Event (GOOSE) is a mechanism inIEC 61850 standard to meet the fast message requirement of substation automation system.

下面结合附图对本发明的方法和装置，以及两者的对应作进一步的详细说明。在此需要说明的是，对于基于UPnP的通用变电站IED的自发现和自配置的方法和装置的说明用于帮助理解本发明，但并不构成对本发明的限定。The method and device of the present invention, as well as the correspondence between the two, will be described in further detail below with reference to the accompanying drawings. It should be noted here that the description of the method and device for self-discovery and self-configuration of the UPnP-based universal substation IED is used to help understand the present invention, but does not constitute a limitation of the present invention.

如图1所示，基于UPnP的通用变电站IED的自发现和自配置装置，包括IED设备自发现模块、IEC 61850对象建模模块和IED自动配置模块，其于控制层UPnP控制点、IEC 61850通信服务模块与协议转换模块交互完成相应功能。其中变电站通用IED包含了智能变电站的测量、保护和控制等功能单元，具有DHCP模块和UPnP设备控制协议等。这里结合图2、图3、图4、图5、图6和图7对本发明的具体技术实施过程进行阐述。As shown in Figure 1, the self-discovery and self-configuration device of the UPnP-based general substation IED includes IED equipment self-discovery module,IEC 61850 object modeling module and IED automatic configuration module, which communicate with UPnP control points at the control layer andIEC 61850 communication The service module interacts with the protocol conversion module to complete corresponding functions. Among them, the general IED for substations includes functional units such as measurement, protection and control of smart substations, and has DHCP modules and UPnP device control protocols. Herein, the specific technical implementation process of the present invention will be described with reference to FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 and FIG. 7 .

1.设备自发现。如图1、图2所示，当变电站通用IED接入网络时，通用IED首先通过DHCP协议自动获取设备的IP地址，并注册UPnP根设备，然后初始化UPnP协议栈。通用IED利用SSDP协议经由组播地址向网络广播自己的服务和资源，UPnP网络中的控制点通过SSDP协议搜索设备并发现设备。1. Device self-discovery. As shown in Figure 1 and Figure 2, when the substation general IED accesses the network, the general IED first automatically obtains the IP address of the device through the DHCP protocol, registers the UPnP root device, and then initializes the UPnP protocol stack. The general IED uses the SSDP protocol to broadcast its own services and resources to the network via the multicast address, and the control point in the UPnP network searches for and discovers the device through the SSDP protocol.

2.设备描述与设备控制。通用IED实现设备自发现后，控制层UPnP控制点获取通用IED的设备信息与其进行远程通信，通用IED接收控制消息并响应。2. Device description and device control. After the general IED realizes the device self-discovery, the UPnP control point of the control layer obtains the device information of the general IED and communicates with it remotely, and the general IED receives the control message and responds.

通用IED通过UPnP网络上传自己的功能特性描述文件，如表1所示。UPnP控制点获取通用IED的功能单元等相关信息，通过下发对应的功能码选择通用IED需要实现的功能，实现对通用IED的设备控制和功能选择。The general IED uploads its own function characteristic description file through the UPnP network, as shown in Table 1. The UPnP control point obtains relevant information such as the functional units of the general-purpose IED, and selects the functions that the general-purpose IED needs to implement by issuing the corresponding function code, so as to realize the device control and function selection of the general-purpose IED.

表1通用IED功能编码及功能单元描述Table 1 General IED function code and functional unit description

序号serial number功能码function code功能描述Function description110X010X01控制模块，包括继保设备的控制等Control module, including control of relay protection equipment, etc.220X020X02保护模块，包括限流、欠压保护等Protection modules, including current limiting, undervoltage protection, etc.330X030X03测量模块，包括电流、电压的处理等Measurement module, including current, voltage processing, etc.··· ··· ··· 

3.IEC 61850对象模型建立。通用IED获取UPnP控制点下发的功能码，根据功能码选择通用IED的功能，进而确定IEC 61850信息模型中提供对应服务的的逻辑设备，包括控制模块、保护模块、测量模块等。然后利用不同逻辑节点来描述逻辑设备的功能，每个逻辑节点对应相应的数据对象以及数据属性，具体如图3所示。3.IEC 61850 object model establishment. The general IED obtains the function code issued by the UPnP control point, selects the function of the general IED according to the function code, and then determines the logical devices that provide corresponding services in theIEC 61850 information model, including control modules, protection modules, measurement modules, etc. Then use different logical nodes to describe the function of the logical device, each logical node corresponds to the corresponding data objects and data attributes, as shown in FIG. 3 .

当功能码为0X01时，通用IED的逻辑设备为控制设备，其逻辑节点主要包括断路器逻辑节点XCBR、自动重合闸逻辑节点RREC等；当功能码为0X02时，通用IED的逻辑设备为保护设备，其逻辑节点主要包括限过电流逻辑节点PTOC、欠电压逻辑节点PTUV、保护跳闸条件逻辑节点PTRC等；当功能码为0X03时，通用IED的逻辑设备为测量设备，其逻辑节点主要包括电流互感器逻辑节点TCTR、电压互感器逻辑节点TVTR、测量逻辑节点MMXU等。逻辑节点则对相应的数据对象和数据属性，例如电流互感器逻辑节点TCTR包含电流采样值，电压互感器逻辑节点TVTR包含电压采样值等。When the function code is 0X01, the logic device of the general IED is the control device, and its logic nodes mainly include the circuit breaker logic node XCBR, the automatic reclosing logic node RREC, etc.; when the function code is 0X02, the logic device of the general IED is the protection device , its logic nodes mainly include overcurrent limiting logic node PTOC, undervoltage logic node PTUV, protection trip condition logic node PTRC, etc.; when the function code is 0X03, the logic device of the general IED is a measuring device, and its logic node mainly includes current mutual inductance TCTR, voltage transformer logical node TVTR, measurement logical node MMXU, etc. The logical nodes correspond to corresponding data objects and data attributes, for example, the current transformer logical node TCTR contains the current sampling value, the voltage transformer logical node TVTR contains the voltage sampling value, and so on.

4.IED自动配置。根据IEC 61850对象模型，利用变电站配置描述语言SCL描述IED的功能、变电站的结构和变电站通信网络拓扑结构等，其文件结构如图4所示包含Header段落、Substation段落、IED段落、Communication段落和DataTemplate段落，其中Header段落为所有SCL文件必须包含段落。ICD文件用以描述智能电子设备的全部能力，其内容必须包含IED段落，可选择性包含Substation段落；SSD文件用以描述变电站电气主接线和所要求的逻辑节点，其内容必须包含Substation段落，可选择性包含IED段落和Communication段落；SCD文件用以描述全站配置信息，其内容必须包含所有段落内容；CID文件用以描述一个实例化智能电子设备，其内容必须包含IED段落、与该实例化智能电力设备相关的Substation段落。4.IED automatic configuration. According to theIEC 61850 object model, the substation configuration description language SCL is used to describe the function of the IED, the structure of the substation and the topology of the substation communication network. paragraphs, where Header paragraphs must be included in all SCL files. The ICD file is used to describe the full capabilities of the intelligent electronic device, and its content must include the IED paragraph, and optionally the Substation paragraph; the SSD file is used to describe the electrical main wiring of the substation and the required logical nodes, and its content must include the Substation paragraph, which can be Optionally include the IED paragraph and the Communication paragraph; the SCD file is used to describe the configuration information of the whole station, and its content must include all paragraphs; the CID file is used to describe an instantiated intelligent electronic device, and its content must include the IED paragraph, and the instantiation. Substation paragraphs related to smart power devices.

SCL文件分为ICD、SSD、SCD和CID四种类型文件，都采用如图4所示的这种结构；也就是说ICD、SSD、SCD和CID文件是通过SCL文件结构(SCL语法结构)来描述的实例文件。SCL files are divided into four types of files: ICD, SSD, SCD and CID, all of which use the structure shown in Figure 4; that is to say, ICD, SSD, SCD and CID files are generated through the SCL file structure (SCL syntax structure). The instance file described.

通用IED根据IEC 61850的信息模型自动生成IED初始描述文件(ICD文件)，对图3中IED中的相关内容进行定义，然后ICD文件通过系统配置工具生成变电站配置的描述文件(SCD文件)，SCD文件通过IED配置工具生成IED的实例化配置文件(CID文件)，最后根据CID文件实例化IED，完成IED的自动配置，包括对IED基本功能的配置和运行参数的设置，具体如图5所示。同时，根据CID和SCD文件完成IEC 61850内存库的配置。完成此步骤后，通知步骤1中的控制点IED的服务状态变化情况。The general IED automatically generates the IED initial description file (ICD file) according to the information model ofIEC 61850, defines the relevant content in the IED in Figure 3, and then the ICD file generates the substation configuration description file (SCD file) through the system configuration tool. The file generates the instantiated configuration file (CID file) of the IED through the IED configuration tool, and finally instantiates the IED according to the CID file to complete the automatic configuration of the IED, including the configuration of the basic functions of the IED and the setting of operating parameters, as shown in Figure 5. . At the same time, the configuration of theIEC 61850 memory bank is completed according to the CID and SCD files. After this step is completed, the control point IED in step 1 is notified of the service status change.

5.IEC 61850通信服务。通用IED配置完成后，通过IEC 61850通信服务模块建立通信服务,提供抽象通信服务接口，完成元数据封装、服务映射与消息的传递，同时如果与不同协议的IED进行通信时，利用协议转换模块实现其他协议到IEC 61850协议的转换。5.IEC 61850 communication services. After the general IED configuration is completed, the communication service is established through theIEC 61850 communication service module, providing an abstract communication service interface, and completing the metadata encapsulation, service mapping and message transmission. Conversion of other protocols toIEC 61850 protocol.

如图6所示，IEC 61850通信服务模块采用标准的XML解析器读入SCL模型配置文件，包括CID和SCD配置文件，解析IED设备列表，针对GOOSE或者SV访问点提取收发通信相关的逻辑设备、逻辑节点以及相应的数据对象和数据属性，建立GOOSE和SV发送报文和接收报文之间的对应关系，提供统一的抽象通信服务接口。As shown in Figure 6, theIEC 61850 communication service module uses a standard XML parser to read the SCL model configuration file, including the CID and SCD configuration files, parse the IED device list, and extract the logical devices related to sending and receiving communication for the GOOSE or SV access point. Logical nodes and corresponding data objects and data attributes establish the correspondence between GOOSE and SV sending and receiving messages, and provide a unified abstract communication service interface.

如图7所示，根据通用IED功能模块获取的元数据，结合IEC 61850内存库文件，实现IEC 61850的服务映射，建立应用服务数据单元ASDU和应用协议数据单元APDU数据包，完成对于IEC 61850格式包的赋值，将数据包发送至数据链路层，实现通用IED的通信服务。As shown in Figure 7, according to the metadata obtained by the general IED function module, combined with theIEC 61850 memory library file, the service mapping ofIEC 61850 is realized, the application service data unit ASDU and the application protocol data unit APDU data packets are established, and theIEC 61850 format is completed. The assignment of the packet sends the data packet to the data link layer to realize the communication service of the general IED.

6.协议转换。若此通用IED模型用于与非IEC 61850信息模型的设备等进行交互，则通过协议转换模块实现IEC 61850协议与其他协议间的服务映射转换，例如IEC 61850与IEC 60870-5-104间的协议转换流程，如图8所示。6. Protocol conversion. If this general IED model is used to interact with devices other than theIEC 61850 information model, the protocol conversion module is used to realize the service mapping conversion between theIEC 61850 protocol and other protocols, such as the protocol betweenIEC 61850 and IEC 60870-5-104 The conversion process is shown in Figure 8.

协议转换模块主要目的是完成协议的转换功能。当本发明设计的IED与非基于IEC61850标准的IED通信时，接收数据时通过协议解析工具获取协议传输的元数据，即获取IEC60870-5-104等报文的遥测、遥信、遥控等数据，然后将元数据存入IEC 61850实时库中；发送数据时，将IEC 61850协议报文转换为IEC 60870-5-104等应用服务数据单元格式。当通用IED与基于IEC 61850标准间的IED通信时，通过IEC 61850通信服务模块将元数据封装为对应的应用服务数据单元格式，然后进行信息交互。The main purpose of the protocol conversion module is to complete the conversion function of the protocol. When the IED designed in the present invention communicates with an IED not based on the IEC61850 standard, the metadata of the protocol transmission is obtained through the protocol analysis tool when receiving data, that is, the telemetry, remote signaling, remote control and other data of messages such as IEC60870-5-104 are obtained, Then the metadata is stored in theIEC 61850 real-time library; when sending data, theIEC 61850 protocol message is converted into the application service data unit format such as IEC 60870-5-104. When the general IED communicates with the IED based on theIEC 61850 standard, the metadata is encapsulated into the corresponding application service data unit format through theIEC 61850 communication service module, and then information is exchanged.

7.完成上述步骤之后，运行启用IED功能服务，并通知UPnP控制点IED的服务变换，取消设备注册，到此，基于UPnP的通用变电站IED的自发现和自配置完成。7. After completing the above steps, run the enabling IED function service, and notify the UPnP control point of the IED service transformation, and cancel the device registration. At this point, the self-discovery and self-configuration of the UPnP-based general substation IED is completed.

因此，本发明能够在较小改动现有IED的基础上，通过UPnP插件实现IED接入网络的自发现和自配置，通过协议转换实现IED协议的新旧映射，解决现在变电站改造带来的大量IED接入和人工配置效率低、工作量大等问题。Therefore, the present invention can realize the self-discovery and self-configuration of the IED access network through the UPnP plug-in on the basis of minor changes to the existing IED, realize the new and old mapping of the IED protocol through the protocol conversion, and solve the large number of IEDs brought by the transformation of the current substation. The access and manual configuration are inefficient and the workload is heavy.

本领域内的技术人员应明白，本发明的实施例可提供为方法、装置、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

本发明是参照根据本发明实施例的方法、装置、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制，尽管参照上述实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本发明的具体实施方式进行修改或者等同替换，而未脱离本发明精神和范围的任何修改或者等同替换，其均应涵盖在本发明的权利要求保护范围之内。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications or equivalent replacements are made to the specific embodiments of the present invention, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A UPnP-based universal substation IED self-discovery and self-configuration method is characterized by comprising,

accessing a universal IED of the intelligent substation, acquiring an IP address through a DHCP, and controlling the accessed universal IED by a UPnP control point of a control layer by using a UPnP protocol to complete self-discovery of the universal IED;

determining specific functions of the accessed universal IED according to an operation request of a UPnP control point of a control layer, and establishing an IEC61850 information model of the universal IED;

and generating an initial ICD file according to the IEC61850 information model of the universal IED, generating an SCD file by the initial ICD file through a system configuration tool, generating a CID file through an IED configuration tool, and configuring the accessed universal IED through the CID file to instantiate so as to complete the automatic configuration of the universal IED.

2. A UPnP-based universal substation IED self-discovery and self-configuration method according to claim 1, characterized in that upon instantiation of a universal IED, IEC61850 communication services are established;

when the intelligent substation is communicated with an IEC61850 standard IED in the intelligent substation, the accessed universal IED performs communication service mapping according to an IEC61850 communication protocol to generate an IEC61850 application service data unit format message and assigns a value to the IEC61850 application service data unit format message;

when the intelligent substation is communicated with a non-IEC 61850 standard IED in the intelligent substation and an accessed universal IED sends a message, metadata of the IEC61850 standard IED is stored in an IEC61850 memory library, and a message corresponding to a non-IEC 61850 standard IED communication protocol format is generated through protocol conversion; when receiving the message, analyzing the message of the non-IEC 61850 standard IED through protocol conversion to obtain metadata, then storing the metadata into an IEC61850 memory base, and mapping the metadata into the IEC61850 application service data unit format message.

3. The method according to claim 2, wherein the automatic configuration of the IED, including the configuration of the IED basic functions and the setting of the operating parameters, is performed while the configuration of the IEC61850 memory base is performed according to the CID and SCD files; after this step is completed, the UPnP control point is notified of the service state change of the universal IED.

4. A method for self-discovery and self-configuration of a UPnP-based Universal substation IED according to claim 2, wherein said IEC61850 communication services comprise,

reading in an SCL model configuration file comprising a CID file and an SCD file by adopting standard XML analysis, analyzing to obtain an IED equipment list, extracting logic equipment and logic nodes related to transceiving communication and corresponding data objects and data attributes according to a GOOSE or SV access point, establishing a corresponding relation between a message sent and a message received in the GOOSE or SV, and providing a uniform abstract communication service interface;

according to metadata acquired by the universal IED, IEC61850 memory library files are combined to realize service mapping of IEC61850, application service data unit ASDU and application protocol data unit APDU data packets are established, assignment of the IEC61850 format packets is completed, the data packets are sent to a data link layer, and IEC61850 communication service of the universal IED is realized.

5. The method as claimed in claim 1, wherein after instantiation of the universal IED, the universal IED runs a function-enabled service, notifies a UPnP control point of service transformation of the universal IED, cancels device registration, and finally completes self-discovery and self-configuration of the universal substation IED based on UPnP.

6. Method for UPnP-based universal substation IED self-discovery and self-configuration, according to claim 1, characterized in that the self-discovery of a universal IED comprises in particular the following steps,

the universal IED automatically acquires an IP address of the equipment through a DHCP protocol, registers UPnP root equipment and initializes a UPnP protocol stack;

the universal IED broadcasts own service and resources to the network through a multicast address by utilizing an SSDP protocol, and is searched and found by a control point in the UPnP network through the SSDP protocol;

and the universal IED remotely communicates with the control point according to the equipment information acquired by the control point, receives the control message and responds.

7. The UPnP-based universal substation IED self-discovery and self-configuration method according to claim 1, wherein controlling a layer UPnP control point comprises at least one of a subscription request, a value request, and an operation request.

8. The UPnP-based universal substation IED self-discovery and self-configuration method according to claim 1, wherein the universal IED uploads its functional feature description files via a UPnP network, and the specific function of the accessed universal IED is determined according to a function code received from a UPnP control point and corresponding to the functional feature description.

9. The UPnP-based universal substation IED self-discovery and self-configuration method according to claim 1 or 8, wherein the establishing of the IEC61850 information model of the universal IED comprises the determination of servers, logical devices, logical nodes, data objects and data attributes; in particular, the method comprises the following steps of,

determining logic equipment in an IEC61850 information model according to the functions of the universal IED, wherein the logic equipment comprises control, protection or measurement;

the functionality of the logical device is then described using different logical nodes, with each logical node corresponding to a respective data object and data attributes.

10. A UPnP-based universal substation IED self-discovery and self-configuration device, comprising,

the equipment self-discovery module is used for acquiring an IP address through DHCP and controlling the accessed universal IED by a UPnP control point of a control layer by utilizing a UPnP protocol;

the IEC61850 object modeling module is used for determining the specific functions of the accessed universal IED according to the operation request of the UPnP control point of the control layer and establishing an IEC61850 information model of the universal IED;

and the IED automatic configuration module is used for generating an initial ICD file according to the IEC61850 information model of the universal IED, generating an SCD file by the initial ICD file through a system configuration tool, generating a CID file by the IED configuration tool, and configuring the accessed universal IED for instantiation through the CID file.

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