技术领域technical field
本发明是一种智能变电站系统新型的虚端子设计方式，具体涉及智能变电站虚端子文件图形结合的表达方法。The invention is a novel virtual terminal design method of an intelligent substation system, and specifically relates to an expression method for combining files and graphics of an intelligent substation virtual terminal.
背景技术Background technique
作为反映智能变电站系统配置信息的配置文件（SystemConfiguration Description，SCD）主要由虚端子实例配置，通信参数、智能电子设备（Intelligent Electronic Devices，IED）之间通信配置以及变电站一次系统结构信息等组成。The configuration file (System Configuration Description, SCD) that reflects the configuration information of the smart substation system is mainly composed of virtual terminal instance configuration, communication parameters, communication configuration between intelligent electronic devices (Intelligent Electronic Devices, IED), and substation primary system structure information.
虚端子实例化即各智能设备之间的虚端子连接是配置SCD文件重要步骤之一。目前，现有的智能变电站虚端子表达方法有两种，一种是利用AutoCAD二维设计软件设计的虚端子连接图，一种是利用Excel工作簿设计的虚端子连接表。两种方式均是以一个IED为主体，体现一个IED虚端子连接方式。表达方法比较单一，仅以一种方式表达变电站的虚端子连接。无法直观的表现以功能为主体、多个IED之间的虚端子连接，或者能够表达多个IED之间虚端子的连接，但是在一副图纸中无法全面描述，不便于查阅。The virtual terminal instantiation, that is, the virtual terminal connection between smart devices, is one of the important steps in configuring the SCD file. At present, there are two ways to express the virtual terminals of smart substations. One is the virtual terminal connection diagram designed by using AutoCAD two-dimensional design software, and the other is the virtual terminal connection table designed by using Excel workbook. Both methods take one IED as the main body and embody one IED virtual terminal connection method. The expression method is relatively simple, and only one way is used to express the virtual terminal connection of the substation. It is impossible to intuitively express the virtual terminal connection between multiple IEDs with functions as the main body, or to express the virtual terminal connection between multiple IEDs, but it cannot be fully described in a drawing and is not easy to consult.
由于各个SCL配置工具将每个IED的输入连接完成，就可配置完成整个变电站的SCD文件，因此在虚端子的表达中忽略了IED虚端子的输出。虚端子又是一个抽象的概念，施工调试及运行维护人员无法直观的查询IED虚端子输出有哪些，连接到哪里，只能在相关联的IED虚端子中查询是否有该IED虚端子的输出，这种方法费时费力；并且由于虚端子数量众多，施工调试人员及运行维护人员无法快速查询所需要的虚端子。往往施工调试人员工作时不需要考虑虚端子的路径或属性，仅需要了解虚端子的名称，而设备集成商配置虚端子时，不仅需要了解虚端子的名称，还要知道虚端子的属性，因此如何直观、快速查询虚端子能够同时满足不同需要人员的要求，是设计人员需要解决的一个难点。Since each SCL configuration tool connects the input of each IED, the SCD file of the entire substation can be configured, so the output of the virtual terminal of the IED is ignored in the expression of the virtual terminal. The virtual terminal is an abstract concept. The construction, commissioning and operation maintenance personnel cannot intuitively query the output of the IED virtual terminal and where it is connected. They can only inquire whether there is an output of the IED virtual terminal in the associated IED virtual terminal. This method is time-consuming and labor-intensive; and due to the large number of virtual terminals, construction and commissioning personnel and operation and maintenance personnel cannot quickly query the required virtual terminals. Usually construction and commissioning personnel do not need to consider the path or attribute of the virtual terminal when working, but only need to know the name of the virtual terminal. When configuring the virtual terminal, the equipment integrator needs to know not only the name of the virtual terminal, but also the attributes of the virtual terminal. Therefore, How to intuitively and quickly query virtual terminals to meet the requirements of different personnel is a difficult point that designers need to solve.
发明内容Contents of the invention
本发明所要解决的问题是如何设计一种能够直观的，快速的查询虚端子连接的表达方式，提高工作效率，提供了一种基于标准化虚端子的二次虚回路图表协同设计方法。The problem to be solved by the present invention is how to design an expression method that can intuitively and quickly query the connection of virtual terminals, improve work efficiency, and provide a collaborative design method for secondary virtual circuit diagrams based on standardized virtual terminals.
本发明采用如下的技术方案：The present invention adopts following technical scheme:
基于标准化虚端子的二次虚回路图表协同设计方法，包括如下的步骤：The collaborative design method of secondary virtual circuit graph based on standardized virtual terminals includes the following steps:
1）以数字化变电站为主体，按照功能将数字化变电站划分为多个功能区域；1) With the digital substation as the main body, the digital substation is divided into multiple functional areas according to the functions;
2）根据功能区域的功能要求，确定功能区域所需的IED设备种类；2) According to the functional requirements of the functional area, determine the type of IED equipment required by the functional area;
3）根据IED设备之间的逻辑关系确定所需要的虚端子；3) Determine the required virtual terminals according to the logical relationship between IED devices;
4）根据各IED设备的逻辑连接关系通过相应的输入虚端子和输出虚端子连接起来形成虚端子连接图；以IED设备的物理联系表达IED设备的逻辑关联，其中虚端子通过虚端子名和虚端子号来描述；4) According to the logical connection relationship of each IED device, connect the corresponding input virtual terminal and output virtual terminal to form a virtual terminal connection diagram; express the logical association of the IED device with the physical connection of the IED device, where the virtual terminal is through the virtual terminal name and virtual terminal number to describe;
5）根据IED设备所连接的虚端子建立该IED设备的虚端子连接表。5) Establish the virtual terminal connection table of the IED device according to the virtual terminals connected to the IED device.
进一步地，步骤1）中所述的功能区域包括：线路间隔、主变间隔、母联间隔、母线设备间隔及母线保护间隔。Further, the functional areas described in step 1) include: line bays, main transformer bays, bus coupler bays, busbar equipment bays and busbar protection bays.
进一步地，步骤3）中明确功能区域内相互关联的IED设备中的功能性的虚端子，所述的功能性的虚端子按照功能分为位置信号虚端子、控制命令虚端子及采样值虚端子，例如保护的采样值，跳闸控制信号，智能终端中的位置信号等；根据虚端子的输出、输入，及SV、GOOSE的划分，用四种符号表示，SVOUT表示SV输出虚端子，SVIN表示SV输入虚端子，GOOUT表示GOOSE输出虚端子，GOIN表示GOOSE输入虚端子。包括确定哪些是测控装置需要的监测性虚端子，例如一次设备的告警信号，合并单元，智能终端的自检信号。Further, in step 3), the functional virtual terminals in the interrelated IED devices in the functional area are specified, and the functional virtual terminals are divided into position signal virtual terminals, control command virtual terminals and sampling value virtual terminals according to their functions , such as the sampling value of the protection, the trip control signal, the position signal in the intelligent terminal, etc.; according to the output and input of the virtual terminal, and the division of SV and GOOSE, it is represented by four symbols, SVOUT represents the SV output virtual terminal, and SVIN represents the SV Input virtual terminal, GOOUT means GOOSE output virtual terminal, GOIN means GOOSE input virtual terminal. Including determining which monitoring virtual terminals are required by the measurement and control device, such as the alarm signal of the primary equipment, the merging unit, and the self-test signal of the intelligent terminal.
进一步地，IED设备的虚端子图的建立过程为：根据功能区域间隔中IED设备的需要，选择所需的IED设备，IED设备包括保护装置IED、合并单元IED、智能终端IED和测控装置IED；建立保护装置IED、合并单元IED、智能终端IED和测控装置IED中的虚端子连接接线，考虑相互关联的IED设备的虚端子输入及输出，建立虚端子流向关联，确定IED设备中输出虚端子的连接方向，连接至哪一个IED设备；确定IED设备中输入虚端子的连接方向，由哪一个IED设备连接过来。线路间隔、主变间隔和母联间隔中所需的IED设备为保护装置IED、合并单元IED、智能终端IED和测控装置IED；母线设备间隔包括合并单元IED和智能终端IED；母线保护间隔包括保护IED。Further, the establishment process of the virtual terminal diagram of the IED equipment is: according to the needs of the IED equipment in the functional area interval, select the required IED equipment, and the IED equipment includes the protection device IED, the merging unit IED, the intelligent terminal IED and the measurement and control device IED; Establish the virtual terminal connection wiring in the protection device IED, the merging unit IED, the intelligent terminal IED and the measurement and control device IED, consider the virtual terminal input and output of the interrelated IED equipment, establish the virtual terminal flow direction association, and determine the output virtual terminal in the IED equipment Connection direction, which IED device is connected to; determine the connection direction of the input virtual terminal in the IED device, and which IED device is connected to it. The IED equipment required in the line bay, main transformer bay and bus coupler bay are protection device IED, merging unit IED, intelligent terminal IED and measurement and control device IED; busbar equipment bay includes merging unit IED and intelligent terminal IED; busbar protection bay includes protection IED.
在施工中，施工调试人员首要目标为各个IED设备之间的功能性虚端子，因此在本发明中仅描述各个IED设备之间的功能性虚端子。测控用的监测性虚端子可以暂不再在本发明设计中描述。During construction, the primary goal of the construction and commissioning personnel is the functional virtual terminals between the various IEDs, so only the functional virtual terminals between the various IEDs are described in the present invention. The monitoring virtual terminal for measurement and control may not be described in the design of the present invention for the time being.
进一步地，IED设备的虚端子连接表的建立过程为：在工作簿中以IED设备为主体，表达一个IED设备的所有输入虚端子，不考虑输出虚端子，列出IED设备输入虚端子属性、输入虚端子名称和输入虚端子号，及相连接的IED设备的输出虚端子名称、输出虚端子属性、输出虚端子名称和输出虚端子号，输入虚端子和输出虚端子一一对应。Further, the establishment process of the virtual terminal connection table of the IED device is as follows: In the workbook, the IED device is used as the main body to express all the input virtual terminals of an IED device, regardless of the output virtual terminals, and the attributes of the input virtual terminals of the IED device are listed, The input virtual terminal name and input virtual terminal number, and the output virtual terminal name, output virtual terminal attribute, output virtual terminal name and output virtual terminal number of the connected IED device, the input virtual terminal and the output virtual terminal are in one-to-one correspondence.
目前，智能变电站与常规变电站相比较，一次设备本体相同，仅增加了部分智能组件及传感器。因此，以功能区域划分变电站，划分成线路间隔，主变间隔，母联间隔，母线设备间隔及母线保护功能等区域。每个功能区域包括相对应的保护装置、测控装置、合并单元、智能终端，按照这几个区域根据电压等级再次进行划分，例如220kV线路间隔可以划分为220kV线路A网区域，220kV线路B区域，双重化的区域组成一个完整的间隔功能区域。At present, compared with conventional substations, smart substations have the same primary equipment, and only some smart components and sensors are added. Therefore, the substation is divided into functional areas, divided into line intervals, main transformer intervals, bus coupler intervals, busbar equipment intervals, and busbar protection functions. Each functional area includes corresponding protection devices, measurement and control devices, merging units, and intelligent terminals. These areas are divided again according to voltage levels. For example, the 220kV line interval can be divided into 220kV line A network area, 220kV line B area, The doubled area constitutes a complete interval functional area.
根据功能区域的划分确定该功能区域内有哪些IED设备。这些IED设备有哪些虚端子需要相互联接，完成区域功能划分的虚端子连接图后，可以作为典型间隔的虚端子连接图，无论相同功能区域里有多少间隔，都可以用于一张图纸表达。便于施工调试人员直观、快速查阅。连接时仅考虑虚端子的中文描述，通用设备中IED设备输入及输出的虚端子号。Determine which IEDs are in the functional area according to the division of the functional area. Which virtual terminals of these IED devices need to be connected to each other? After completing the virtual terminal connection diagram of the regional function division, it can be used as a virtual terminal connection diagram of typical intervals. No matter how many intervals there are in the same functional area, it can be used for one drawing expression. It is convenient for construction and commissioning personnel to directly and quickly check. When connecting, only consider the Chinese description of the virtual terminal, and the virtual terminal numbers of the input and output of the IED equipment in the general equipment.
为达到上述目的。本发明方法以《国家电网公司输变电工程通用设备（110（66）～750kV智能变电站二次设备）》为基础，以AutoCAD二维设计软件设计的虚端子连接图为功能主体的虚端子连接，以Excel工作簿设计的虚端子连接表列出虚端子详细的连接。To achieve the above purpose. The method of the present invention is based on "General Equipment for Power Transmission and Transformation Engineering of State Grid Corporation (110 (66) ~ 750kV Intelligent Substation Secondary Equipment)" and takes the virtual terminal connection diagram designed by AutoCAD two-dimensional design software as the virtual terminal connection of the functional subject , use the virtual terminal connection table designed in the Excel workbook to list the detailed connections of the virtual terminals.
基于标准化虚端子的二次虚回路图表协同设计方法将图形表达方法与表格方法有机的结合在一起，与现有的技术相比较，本发明，利用虚端子图统筹性的将一个间隔所关联的IED设备整合在一起，可以直观的查询间隔内IED设备之间的物理连接；IED设备之间虚端子的联系及流向，可供施工调试，运行维护人员直观快速的查阅功能区域内某一IED设备有哪些输入、输出。设有详细的表格表达方式，每个IED设备的虚端子表格可以快速的查询虚端子功能、路径，可供设备集成商及运行维护人员了解虚端子详细信息。为施工单位，业主单位，运行维护单位，设备集成商提供了虚端子可视化展示，提高了工作效率，减少了虚端子配置错误的风险。为今后智能变电站的改扩建工程提供了良好的基础，减轻了设计负担。The collaborative design method of the secondary virtual circuit chart based on the standardized virtual terminal organically combines the graphic expression method and the table method. Compared with the existing technology, the present invention uses the virtual terminal diagram to systematically associate a interval The IED devices are integrated together, and the physical connection between the IED devices in the interval can be intuitively queried; the connection and flow direction of the virtual terminals between the IED devices can be used for construction and debugging, and the operation and maintenance personnel can intuitively and quickly check a certain IED device in the functional area What are the inputs and outputs. With a detailed table expression method, the virtual terminal table of each IED device can quickly query the function and path of the virtual terminal, which can be used by equipment integrators and operation and maintenance personnel to understand the detailed information of the virtual terminal. It provides visual display of virtual terminals for construction units, owners, operation and maintenance units, and equipment integrators, which improves work efficiency and reduces the risk of virtual terminal configuration errors. It provides a good foundation for future reconstruction and expansion projects of smart substations and reduces the design burden.
附图说明Description of drawings
图1是线路间隔的功能划分图；Figure 1 is a functional division diagram of the line interval;
图2是线路保护装置IED的虚端子表；Figure 2 is a virtual terminal table of the line protection device IED;
图3是线路合并单元IED的虚端子表；Fig. 3 is the imaginary terminal list of line merging unit IED;
图4是线路智能终端IED的虚端子表。Figure 4 is a table of virtual terminals of the line intelligent terminal IED.
具体实施方式detailed description
以某智能变电站为例，介绍基于标准化虚端子的二次虚回路图表协同设计表达方法的过程：Taking a smart substation as an example, this paper introduces the process of the collaborative design expression method of the secondary virtual circuit diagram based on standardized virtual terminals:
如图1所示：以某220kV智能变电站为主体，按线路功能区域划分IED设备，包括线路保护装置IED、线路测控装置IED、线路合并单元IED，线路智能终端IED。由于线路保护装置IED、线路合并单元IED、线路智能终端IED涉及母线保护，线路合并单元涉及PT合并单元IED，因此将母线保护IED、PT合并单元IED也划分至该功能区域。PT合并单元IED、母线保护IED有独立的功能区域。As shown in Figure 1: Taking a 220kV intelligent substation as the main body, IED equipment is divided according to the line functional area, including line protection device IED, line measurement and control device IED, line merging unit IED, and line intelligent terminal IED. Since the line protection device IED, line merging unit IED, and line intelligent terminal IED are related to busbar protection, and the line merging unit is related to PT merging unit IED, the busbar protection IED and PT merging unit IED are also divided into this functional area. PT merging unit IED and busbar protection IED have independent functional areas.
按照各个IED设备的功能进行物理上的连接，将IED设备图元摆放至适当的位置，然后进行逻辑上的连接设计。将虚端子分为两部分，一部分为功能性的虚端子，包括保护用的SV输入虚端子、SV输出虚端子及测量用的SV输入虚端子、SV输出虚端子，控制、操作的GOOSE；一部分为测控用的状态监测性虚端子，包括合并单元IED、智能终端IED的自检信号，一次设备本体至智能终端IED的一次设备状态信号。Physically connect according to the functions of each IED device, place the IED device graphic elements in an appropriate position, and then carry out logical connection design. Divide virtual terminals into two parts, one part is functional virtual terminals, including SV input virtual terminals for protection, SV output virtual terminals, SV input virtual terminals, SV output virtual terminals for measurement, GOOSE for control and operation; one part It is a status monitoring virtual terminal for measurement and control, including the self-test signal of the merging unit IED and the intelligent terminal IED, and the primary device status signal from the primary device body to the intelligent terminal IED.
PT合并单元IED提供电压SV量输出至线路合并单元IED，线路合并单元IED提供SV量分别输出至线路保护装置IED，母线保护IED，线路测控装置IED。线路保护装置IED及母线保护IED用的电流SV量是相同的SV量，因此SVOUT2～SVOUT7分别送至线路保护装置IED，母线保护IED。同时线路智能终端IED提供隔离开关1,2位置的GOOSE量，输出GOOUT12和GOOUT13，输出至线路合并单元IED（GOIN6、GOIN7）。The PT merging unit IED provides voltage SV output to the line merging unit IED, and the line merging unit IED provides SV output to the line protection device IED, busbar protection IED, and line measurement and control device IED respectively. The amount of current SV used by the line protection device IED and the busbar protection IED is the same SV amount, so SVOUT2-SVOUT7 are respectively sent to the line protection device IED and the busbar protection IED. At the same time, the line intelligent terminal IED provides the GOOSE quantity of the isolating switch 1 and 2 positions, outputs GOOUT12 and GOOUT13, and outputs to the line merging unit IED (GOIN6, GOIN7).
线路保护装置IED提供断路器跳闸，闭锁重合闸，重合闸的GOOSE量至智能终端IED，分别通过GOOUT1～3，GOOUT7、GOOUT8输出虚端子，GOIN1、GOIN6、GOIN11、GOIN16、GOIN31输入虚端子逻辑连接，提供断路器失灵启动命令的GOOSE输出，通过GOOUT输出虚端子和GOIN输入虚端子至母线保护IED。The line protection device IED provides circuit breaker tripping, blocking reclosing, and the GOOSE quantity of reclosing to the intelligent terminal IED, respectively through GOOUT1~3, GOOUT7, GOOUT8 output virtual terminals, GOIN1, GOIN6, GOIN11, GOIN16, GOIN31 input virtual terminals logic connection , to provide the GOOSE output of the circuit breaker failure start command, through the GOOUT output virtual terminal and the GOIN input virtual terminal to the busbar protection IED.
母线保护IED提供线路跳闸GOOSE命令分别输出至线路保护装置IED、线路智能终端IED。母线保护IED提供的线路跳闸GOOSE在母线保护IED中为GOOUT8，分别输出至线路保护装置IED的GOIN15闭锁重合闸，GOIN20远跳开入；至线路智能终端IED的GOIN21三跳并闭锁重合闸。The busbar protection IED provides the line trip GOOSE command to output to the line protection device IED and the line intelligent terminal IED respectively. The line trip GOOSE provided by the busbar protection IED is GOOUT8 in the busbar protection IED, which is respectively output to the GOIN15 of the line protection device IED for blocking and reclosing, and the GOIN20 for remote tripping and opening; to the GOIN21 of the line intelligent terminal IED for triple tripping and blocking and reclosing.
线路智能终端IED提供断路器位置(GOOUT9、GOOUT10、GOOUT11)、压力低闭锁重合闸、闭锁重合闸命令的GOOSE输出至线路保护装置IED，提供隔离开关位置的GOOSE、与线路保护装置IED相同的断路器位置(GOOUT9、GOOUT10、GOOUT11)的GOOSE至线路测控装置IED。提供隔离开关1,2位置（GOOUT12，GOOUT13）的GOOSE分别输出至母线保护IED及线路合并单元IED。The line intelligent terminal IED provides the position of the circuit breaker (GOOUT9, GOOUT10, GOOUT11), the GOOSE output of the low pressure locking reclosing and the locking reclosing command to the line protection device IED, and provides the GOOSE of the isolating switch position and the same circuit breaker as the line protection device IED GOOSE at the device position (GOOUT9, GOOUT10, GOOUT11) to the line measurement and control device IED. The GOOSE of the isolating switch 1 and 2 positions (GOOUT12, GOOUT13) are respectively output to the busbar protection IED and the line merging unit IED.
线路测控装置IED提供断路器及隔离开关遥控、复归的GOOSE至智能终端IED。主要的功能性的虚端子的描述就此结束。按照上述的描述，将各IED设备采用物理连接的方式表示逻辑关联，将各连接虚端子采用标上虚端子名和虚端子号来描述，上述部分的描述可供施工调试人员使用，可以直观、快速的查阅功能区域中每个IED有哪些虚端子，虚端子的名称，流向。The line measurement and control device IED provides circuit breaker and isolating switch remote control and reset GOOSE to the intelligent terminal IED. This concludes the description of the main functional virtual terminals. According to the above description, each IED device is physically connected to represent logical association, and each connection virtual terminal is described by marking the virtual terminal name and virtual terminal number. The above description can be used by construction and commissioning personnel, which can be intuitive and fast Check which virtual terminals each IED has in the function area, the name of the virtual terminal, and the flow direction.
线路合并单元IED、线路智能终端IED的自检信号、线路智能终端IED中一次设备本体的遥信信号在本功能区域不体现，也可以灵活的将这部分虚端子设计在另一张图纸中，图纸只描述该功能区域中线路测控装置IED的状态监测性虚端子。The self-inspection signal of the line merging unit IED, the line intelligent terminal IED, and the remote signaling signal of the primary device body in the line intelligent terminal IED are not reflected in this functional area, and these virtual terminals can also be flexibly designed in another drawing. The drawings only describe the status monitoring virtual terminals of the line measurement and control device IED in this functional area.
根据制作完成的虚端子连接图、利用SCL（SubstationConfiguration description Language,SCL）配置工具在工作簿中以IED设备为主体，表达一个IED设备的所有输入虚端子，不考虑输出虚端子，列出IED设备输入虚端子属性、虚端子名称和虚端子号，及相连接的IED设备的输出虚端子名称、虚端子属性、虚端子名称和虚端子号建立虚端子连接表。或利用厂家提供的虚端子表，完成虚端子具体的连接，使设备集成商可以完成SCD文件的配置。也可以根据图形文件中IED虚端子号对应查询虚端子表中虚端子属性，相关联IED设备的虚端子的属性。如图2所示为线路保护装置IED的虚端子表，线路保护装置IED作为接收装置，只考虑输入，按照行为单元，分别列出作为输入的IED设备每个输入虚端子号以及对输入虚端子定义，和输入虚端子的数据属性；线路智能终端IED和母线保护IED以及线路合并单元IED作为输出装置，只考虑输出，按照行为单元，分别列出作为输出的IED设备每个输出虚端子号以及对输出虚端子定义，和输出虚端子的数据属性，用>>表示输出，并在同一行>>的另一侧列出作为输入IED设备的名称，跟输出虚端子相对应的输入虚端子号，输入虚端子号以及对输入虚端子定义，和输入虚端子的数据属性。完成一行后，另一起行，进行下一行的数据记录。According to the completed virtual terminal connection diagram, use the SCL (SubstationConfiguration description Language, SCL) configuration tool to use the IED device as the main body in the workbook to express all the input virtual terminals of an IED device, regardless of the output virtual terminals, and list the IED devices Input virtual terminal attributes, virtual terminal names and virtual terminal numbers, and output virtual terminal names, virtual terminal attributes, virtual terminal names and virtual terminal numbers of connected IEDs to establish a virtual terminal connection table. Or use the virtual terminal table provided by the manufacturer to complete the specific connection of the virtual terminal, so that the device integrator can complete the configuration of the SCD file. It is also possible to query the virtual terminal attributes in the virtual terminal table according to the corresponding IED virtual terminal numbers in the graphics file, and associate the attributes of the virtual terminals of the IED equipment. Figure 2 shows the virtual terminal table of the line protection device IED. The line protection device IED is used as a receiving device and only considers the input. According to the behavior unit, each input virtual terminal number of the input IED equipment and the corresponding input virtual terminal are listed separately. Definition, and data attributes of input virtual terminals; line intelligent terminal IED, busbar protection IED and line merging unit IED are used as output devices, only output is considered, and according to the behavior unit, each output virtual terminal number of the output IED equipment and For the definition of the output virtual terminal and the data attribute of the output virtual terminal, use >> to indicate the output, and list the name of the input IED device on the other side of the same line >>, and the input virtual terminal number corresponding to the output virtual terminal , input the virtual terminal number and the definition of the input virtual terminal, and the data attribute of the input virtual terminal. After one line is completed, start another line to record the data of the next line.
如图3所示为线路合并单元IED的虚端子表，同样线路合并单元IED作为输入IED装置，只考虑线路合并单元IED的输入，将对应的输出端IED装置和虚端子进行列表表示；如图4所示为线路智能终端IED的虚端子表，所有的IED设备均按照上述的方式进行虚端子连接表的建立。As shown in Figure 3 is the virtual terminal table of the line merging unit IED, the same line merging unit IED as the input IED device, only consider the input of the line merging unit IED, and list the corresponding output end IED devices and virtual terminals; as shown in the figure 4 shows the virtual terminal table of the line intelligent terminal IED, and all IEDs establish the virtual terminal connection table according to the above-mentioned method.
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