JP2018023229A - Substation control system, control method therefor, and intelligent electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a substation control system not necessarily requiring reconstruction of the substation control system even when replacing a facility not compliant to a standardized data transmission system with a facility compliant to the system, a control method therefor, and an intelligent electronic device.SOLUTION: A substation control system including a server, a facility for a power transmission network, and a network to which the server and a plurality of facilities are connected, the server and the facilities implementing standardized data transmission via the network, comprises: an intelligent electronic device that is connected to the network and is capable of standardized data transmission; and a virtualizing system that configures a virtual model for the intelligent electronic device. The virtualizing system allocates a facility not compliant to the standardized data transmission system of the plurality of facilities to the virtual model; the server is enabled to execute data transmission with the facility via the virtual model.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a substation control system, a control method therefor, and an intelligent electronic device, and is suitable for application to, for example, a substation control system based on a substation network compliant with the IEC 61850 standard.

  Smart grids that can control and optimize the flow of power from both the supply side and the demand side are becoming important. Therefore, substation systems have also been automated. This substation automation system performs operations such as monitoring the status of the substation's premises system and switching the circuit breaker, and when a failure or abnormality occurs in the power network / equipment, the fault location is separated from the power network. The purpose is to prevent the spread of power and to maintain and improve the power supply and the reliability of power.

  Therefore, the substation automation system is equipped with a substation server, and the configuration of a substation control system such as a measurement control device that monitors the state of voltage, phase, etc. at each measurement point of the power grid, and a protection control device that shuts off the power grid The equipment is intelligent and connected to the substation server by a network. IEC 61850 has been realized as an international standard for data transmission through a network in a substation automation system. Equipment having a communication function based on this standard is collectively referred to as intelligent electronic device (IED). The IED has a data reception unit and a data transmission unit, and exchanges data with a substation server via a network. As a specific device of the IED, there is a protection relay that protects the protection circuit from a sudden change in current or voltage. Patent Document 1 discloses a substation automation system compliant with the IEC 61850 standard.

JP 2013-164731 A

  By the way, when renovating a conventional substation control system in accordance with the IEC 61850 standard, even if the central system of the control is immediately replaced with a substation server that can realize data transmission conforming to the IEC 61850 standard, measuring instruments and protection control The components of the substation control system, such as equipment, have a long service life, so they are not replaced with ones that conform to the IEC 61850 standard at the same time. At this stage, a method that replaces the standard is adopted. Therefore, a plurality of existing measuring instruments are connected to the network via a BCU (Bay Control Unit) that aggregates the received signals, converts them into a protocol conforming to the IEC 61850 standard, and transmits them to the substation server. The protection control device is connected to the network via an IED that can mediate the protocol communication with the network.

  Under the IEC 61850 standard, each of the BCU, IED, and protection control device corresponding to IEC 61850 is treated as a different logical model (virtual model) such as LD (Logical Device). Each time a substation server replaces a protection control device that does not comply with the standard with a protection control device that conforms to the standard, the substation server must restructure the logical structure of the control system to enable data transmission based on the standard. There is. As described in Patent Document 1, it is conceivable that the substation server automatically reduces the system setting by automatically recognizing the logical model of the equipment connected to the network. It is necessary to confirm the operation of the entire substation control system, and as a result, it is impossible to avoid rebuilding the substation control system.

  Further, for the application installed in the substation server, the application program needs to be changed in accordance with the change of the control target.

  The present invention provides a substation control system, a control method thereof, and intelligent electronics that do not necessarily require reconstruction of a substation control system even when equipment that does not conform to the standardized data transmission system is replaced with equipment that conforms to the system. The device is to be proposed.

  In order to solve such a problem, in the present invention, there is provided a server, equipment for a power transmission network, and a network connecting the server and a plurality of equipment, and the server and equipment are standardized via the network. A substation control system that is connected to a network and is capable of standardized data transmission, and a virtual system that forms a virtual model in the intelligent electronic device. The equipment that does not conform to the standardized data transmission among the plurality of equipments is assigned to the virtual model, and the server can execute data transmission with the equipment through the virtual model.

  Further, in the present invention, there is provided a control method for a substation control system in which a server and a plurality of facilities for a power transmission network realize standardized data transmission via the network, the substation control system being connected to the network. An intelligent electronic device capable of standardized data transmission, and a virtualization system comprising a virtual model in the intelligent electronic device, the virtual system being standardized among a plurality of facilities in the virtual model Equipment that does not comply with data transmission was assigned, and the server was able to execute data transmission with the equipment via a virtual model.

  In the present invention, in the intelligent electronic device to which a plurality of protection control devices are connected, the intelligent electronic device includes a virtual network interface corresponding to the plurality of connected protection control devices, and a plurality of devices operating on the virtual network interface. A virtual control device, the virtual control device manages the identification information of the protection control device and the model definition information of the protection control device, and controls the validation and invalidation of the virtual control device with each identification information I did it.

  According to the present invention, it is possible to realize a substation control system, a control method thereof, and an intelligent electronic device that do not require system reconstruction and modification of an application program of a substation server.

It is a substation control system block diagram by embodiment of this invention. It is a substation control system block diagram by embodiment of this invention. It is IED block diagram by embodiment of this invention. It is a block diagram of the logic model of the substation control system by embodiment of this invention. It is a schematic diagram of the communication protocol of the substation control system by embodiment of this invention. It is a process outline | summary of the communication protocol of the substation control system by embodiment of this invention. It is a process outline | summary of the communication protocol of the substation control system by embodiment of this invention. It is the example of mounting of the substation control system by embodiment of this invention. It is a component of implementation of the substation control system by embodiment of this invention. It is the outline | summary of the construction system of the substation control system by embodiment of this invention. It is a figure which shows the kind of construction file of the substation control system by embodiment of this invention. It is an example of the screen of the construction environment of the substation control system by embodiment of this invention. It is an example of the screen of the construction environment of the substation control system by embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Configuration of substation control system according to this embodiment In FIGS. 1 and 2, reference numeral 1 denotes a substation control system according to this embodiment. The substation control system 1 includes a measuring device 11 that measures a voltage value, a phase, and a current amount at a measurement point of a power transmission network, and a protection control device that detects a failure in the power system of the facility and shuts off the power system according to conditions. 12.

  The substation control system 1 also monitors and controls the measuring instrument 11 and the protection control device 12, and a substation server 6 that communicates with the control station server 2 that monitors and controls the plurality of substation control systems 1. HMI 3 that sequentially displays the status of monitoring and control of measuring instrument 11 and protection control device 12 at station server 6, and changes the state of measuring instrument 11 and protection control device 12 and operates the circuit breaker and the like.

  The measuring instrument 11 is connected by a hard-wired (copper wire) signal line to the BCU 8 that aggregates the measurement signals measured by the measuring instrument 11 and converts them into a protocol conforming to the IEC 61850 standard and transmits them to the substation server 6. The protection control device 12 is connected to an IED 9 having a communication function based on the IEC 61850 standard by a hard-wired (copper wire) signal line.

  In addition, the substation control system 1 may be provided with the protection control apparatus 16 (FIG. 3) corresponding to the IEC61850 standard, which is a facility in which the IED 9 and the protection control apparatus 12 are combined. Further, the substation control system 1 may include an IED 10 connected to a plurality of facilities such as a protective equipment control device and a measuring instrument 15 via a merging unit 14 that aggregates state information from the plurality of facilities. .

  A time server 4 that provides time information for performing time synchronization between facilities in the substation control system 1 is connected to the substation server 6 through a station bus 7 described later. The substation server 6 is connected to a database 5 that holds construction information of the substation control system 1.

  The LAN connection is duplicated, and the time server 4, substation server 6, BCU 8, IED 9, and IED 10 are connected by a station bus 7 defined in the IEC 61850 standard via a layer 2 switch. The station bus 7 may be a ring bus. The IED 10 and the merging unit 14 are connected by a process bus 13 defined in the IEC 61850 standard.

  The HMI 3 is, for example, a workstation or an industrial personal computer, and the substation server 6 is, for example, an open server, a mainframe computer, or the like.

  FIG. 3 shows the configuration of the IED 9 and the like according to this embodiment. In FIGS. 1 and 2, since the LAN is duplicated, two IEDs 9 are described accordingly. In FIG. 3, only one is shown for explanation. The IED 9 includes a NIC (Network Interface Card) having a network interface conforming to the Ethernet (registered trademark) standard for connection to the station bus 7.

  The NIC 9N includes virtual NICs 9NA and 9NB, which are virtual NICs implemented by software. The virtual NICs 9NA and 9NB have independent MAC addresses and IP addresses, respectively, and can be recognized from the outside of the IED 9 as a plurality of NICs.

  When the virtual NIC 9NA and the virtual NIC 9NB are assigned to different virtual machines (computers virtualized by software), it can be recognized from the outside of the IED 9 that there are a plurality of computers.

  The protection control device 12A is connected to the virtual NIC 9NA, and the protection control device 12B is connected to the virtual NIC 9NB.

(2) Logical model of substation control system according to the present embodiment FIG. 4 is a configuration diagram in which a logical model defined in the IEC 61850-6 standard is applied to the substation control system 1 according to the present embodiment. Specifically, in FIG. 4, the substation server 6, the IED 9, and the protection control device 16 corresponding to the IEC 61850 standard are defined as an abstracted logical model. Based on the abstracted logical model, the IEC 61850-7 standard, the IEC 61850-8 standard, and the like are defined as the service 17. By using the logic model shown in FIG. 4, a substation control system in which a plurality of vendors can be mixed can be constructed.

  Although FIG. 4 shows only the logical model of the IED 9, the logical model can be similarly applied to the protection control device 16 corresponding to the IEC 61850 standard.

  In the logical model, the protection control device 12A connected to the virtual NIC 9NA on the IED 9 is abstracted as a logical device LD (Logical Device) 9LDA, and the function of the LD 9LDA is defined as a logical node LN (Logical Node) 9LNA which is a functional model And standardize. An example of the function model is a circuit breaker (XCBR1). The LN9LNA uses a data object DO (Data Object) 9DO such as a switch position (Pos) and a mode (Mod) for control. The logical device and the logical node may be collectively referred to as a protocol stack.

(3) Communication Protocol According to this Embodiment Specifically, the service 17 (FIG. 4) is defined based on the communication protocol shown in FIG.

  As shown in FIG. 5, the service 17 is realized by using an abstract communication interface ACSI (Abstract Communication Service Interface) using an existing communication protocol. The service 17 is a Get / Set (Get / Set, Report / Log, Control, Settings) 20 that transmits a settling or accident record waveform, a Time Sync 21 that performs time synchronization, and a GOOSE 22 that transmits a shut-off command or interlock information. And Sampled Value 23 for transmitting VT / CT instantaneous data.

  The substation server 6 shown in FIG. 4 uses Get / Set etc. 20 for data reference, log reference, control, establishment, etc. with respect to the protection control device 12 (FIG. 2) (actually IED 9). To do. Moreover, the substation server 6 performs time synchronization with a time server using Time Sync21.

  The protection control device 12 (actually the IED 9) is prevented from operating other than an appropriate procedure with a shut-off instruction for shutting off the accident section and other protection control devices 12 (not shown). Interlock information is exchanged using GOOSE 22.

  The substation server 6 periodically acquires a voltage value, a phase, and a current amount at a measurement point of the power transmission network by using the Sampled Value 23 from the measuring instrument 11 (FIG. 2) (actually BCU8).

  The four services 17 described above are associated with existing communication protocols by SCSM (Specific Communication Service Mapping) that maps to specific communication protocols as shown in FIG. The four services 17 described above use the Ethernet (registered trademark) 29 corresponding to the data link layer and the physical layer in the OSI basic reference model.

  Get / Set 20 uses TCP / IP 27 or ISO CO 26 corresponding to the transport layer and network layer in the OSI basic reference model. The Get / Set 20 uses an MMS (Manufacturing Message Specification) 24 that is an application layer in the OSI basic reference model. The MMS 24 is defined by the IEC 61850-7 standard.

  As shown in FIG. 6, the MMS 24 is based on a client-server model, and the server 31 processes a request from the client 30. The client 30 is IED9 (including LN9LNA and DO9DO) in FIG. 4, and the server 31 is the substation server 6 in FIG.

  The reception unit of the client 30 and the transmission unit of the server 31 use ACSI, and the transmission buffer of the client 30, the reception buffer of the client 30, the transmission buffer of the server 31, and the reception buffer of the server 31 use existing communication protocols.

  When the receiving unit of the client 30 makes an MMS request to the transmitting unit of the server 31, the transmitting unit of the server 31 sends an MMS response to the client 30. The MMS request is made via the transmission buffer of the client 30 and the reception buffer of the server 31. Similarly, the MMS response is made through the transmission buffer of the server 31 and the reception buffer of the client 30.

  The service 17 using the MMS 24 corresponds to, for example, acquisition of configuration information of the LD9LDA, acquisition of configuration information of the service 17, reading / writing of a data value of DO9DO, reading / writing of a DataSet value defined by GOOSE22, and the like.

  The Time Sync 21 uses the UDP / IP 28 corresponding to the transport layer and the network layer in the OSI basic reference model, and uses the SNTP (Simple Network Time Protocol) 25 which is the application layer in the OSI basic reference model.

  As shown in FIG. 7, GOOSE 22 is based on a publish-subscribe model, and a transmission unit on the publishing side 33 sends a multicast transmission request (publishing request) to a plurality of objects via a transmission buffer on the publishing side 33. The GOOSE message 34 is sent. A multicast MAC address is used for the multicast transmission request.

  The receiving unit on the subscription side 32 makes an acquisition request (subscription request) to the reception buffer on the subscription side 32 by specifying acquisition conditions for the GOOSE message 34 flowing on the network. If there is a GOOSE message 34 that matches the specified acquisition condition, the reception buffer on the subscription side 32 sends a subscription response to the reception unit on the subscription side 32.

  The reception unit on the subscription side 32 and the transmission unit on the publishing side 33 use ACSI, and the reception buffer on the subscription side 32 and the transmission buffer on the publication side 33 use existing communication protocols.

  The GOOSE message 34 includes an Ethernet (registered trademark) header including information (a destination MAC address, a source MAC address, etc.) for specifying a communication partner in the Ethernet (registered trademark) standard. The GOOSE message 34 includes a VLAN header (VLAN tag) for constructing a plurality of VLANs (virtual LANs) in one port.

  The GOOSE message 34 includes a GOOSE header having an identifier set by a system builder according to the purpose of use and a GOOSE PDU having a DataSet that is actually transmitted as a message.

  The GOOSE PDU is defined in the IEC 61850-7-2 standard, and includes an identifier of the GOOSE message 34, a modeled IED9 reference name (LD9LDA), and a modeled LN9LNA reference name.

(4) Implementation example of a substation control system according to the present embodiment In order to construct the substation control system 1 described above, a language based on XML (Extensible Markup Language) defined in the IEC 61850-6 standard shown in FIG. SCL (Substation Configuration Language) 50 is used. By using the SCL 50, the contents of the LN9LNA, DO9DO, and the service 17 can be known between the logically modeled facilities. FIG. 9 illustrates the components in FIG.

  As shown in FIG. 9, the SCL 50 includes a header 501, a substation 502 (not an essential component but not shown in FIG. 8), a communication 503, an IED 504, and a DataTypeTemplates 505.

  The header 501 describes information such as the version and revision of the SCL file and the tool ID. Substation 502 describes information on each facility in the substation and information on the structure in the substation. Communication 503 describes communication parameters of a network interface used when communicating with GOOSE 22 or MMS 24. The IED 504 describes the definition (including data transmission source and transmission content) of LD9LDA, LN9LNA, DO9DO and available service 17 related to each IED in the substation (such as IED9, IED10 and IEC61850 standard protection control device 16). The DataTypeTemplates 505 describes various type definitions of logical nodes and data objects (such as LN9LNA and DO9DO).

  In the SCL 50, six files of an ICD file 51, an IID file 52, a CID file 53, an SCD file 54, an SED file 55, and an SSD file 56 shown in FIG. 10 are defined.

  The ICD file 51 is a template file in which available functions corresponding to the IED type and the type of the logical node (LN9LNA) are described. The IID file 52 is a file in which information set in advance regarding the IED 9 and the definition of the data object (DO9DO) are described. The CID file 53 is a file in which the definition of the data object (DO9DO) related to the IED 9, the structure of the substation, and information necessary for communication are described. The SCD file 54 is a file in which data object definitions, substation structures, and information necessary for communication are described. The SED file 55 is a file in which an interface for exchanging information between a plurality of projects is described. The SSD file 56 is a file in which the structure of the substation and the type of the logical node (LN9LNA, etc.) are described.

  FIG. 11 shows the relationship between the files in FIG. The IED Configurator 61 for setting the IED outputs an ICD file 51 and an IID file 52. The output ICD file 51 is taken in by the System Configurator 62, and the System Configurator 62 sets the entire substation control system 1 and generates the SCD file 54.

  The IED Configurator 61 reads the generated SCD file 54, generates setting contents related to the IED 9 as the CID file 53 from the SCD file 54, transfers the setting contents to the IED 9, and sets the IED 9.

  The System Configurator 62 may take in the ICD file 51, the SED file 55, and the SSD file 56 when generating the SCD file 54. The SED file 55 is output by another system System Configurator 63 that performs setting of another substation control system 1 as a whole. The SSD file 56 is output by the System Specification Tool 64.

(5) Screen of Substation Control System Construction Environment According to this Embodiment FIGS. 12 and 13 show an example of a screen of a substation control system construction environment according to this embodiment. In the IED name 71 column, Relay1 etc., which is the name of IED9, is described, in the virtual IED name 72 column, Relay1-1, which is the name of the virtual IED, is described, and in the access point name 73 column, , Ap1 which is the name of the access point is described. The access point may refer to the virtual NIC 9NA or the like, and the virtual NIC 9NA or the like may be used as identification information of the protection control device 12B. Note that virtual IED names are automatically generated as many as the number of access points, and may be generated based on a naming rule such as a hyphen and a number written after an IED name as in Relay 1-1.

  In the logical device name 74 column, METXCBR1 (LD9LDA in FIG. 4) is described, and in the logical node name 75 column, XCBR1 (LN9LNA in FIG. 4) indicating the circuit breaker is described. In the data object 76 column, Pos, Mod and the like (DO9DO in FIG. 4) are described. The data object 76 column may include numerical values as shown in FIGS. 12 and 13.

(6) Equipment replacement according to the present embodiment As shown in FIG. 2, the service life of the protection control device 12B is passed over and needs to be replaced, the protection control device 12B is removed, and instead the protection control device 16 compliant with the IEC 61850 standard. The replacement for installing will be described.

  As shown in FIG. 3, the protection control device 12B is connected to the virtual NIC 9NB and is abstracted as LD9LDB, and the function of the LD9LDB is standardized as LN9LNB. For this reason, only the physical connection is changed by making the contents of the virtual NICs 9NB, LD9LDB and LN9LNB the same as those of the NIC16N, LD16LD and LN16LN, and the above-described replacement can be performed without changing the system software. It becomes.

  When the protection control device 12B is removed, the CID file 53 corresponding to the virtual NICs 9NB, LD9LDB, and LN9LNB assigned to the protection control device 12B is read by the protection control device 16 compliant with the IEC 61850 standard. The protection control device 12B, the virtual NIC 9NB, the LD 9LDB, and the LN 9LNB may be combined into a virtual IED (virtual control device, included in the virtualization system), and the virtual IED is an independent IEC 61850 standard-compliant facility for a substation control system. 1 is treated. By reading the CID file 53 as described above, the protection control device 12B and the protection control device 16 compliant with the IEC 61850 standard use the same logical model.

  Next, the protection control device 12B, the virtual NICs 9NB, LD9LDB, and LN9LNB are invalidated (there is no deletion and there is no change in the logical structure), and the protection control device 16 compliant with the IEC 61850 standard is connected to the station bus 7. As a result, the virtual IED including the protection control device 12B and the protection control device 16 compliant with the IEC 61850 standard having the same IP address and logical model operate.

  The invalidated protection control device 12B, virtual NIC 9NB, LD9LDB, and LN9LNB do not affect the operation of the system, so it is not necessary to delete them. Also good.

  In the above embodiment, an example in which one existing protection control device 12 is replaced with one protection control device 16 that complies with the IEC 61850 standard has been described. However, a plurality of existing protection control devices 12 are replaced with a plurality of protection controls. It may be replaced with a single IEC 61850 standard protection control device 16 having device functions. In that case, when the substation control system 1 is constructed, LDs and LNs corresponding to a plurality of existing protection control devices 12 are collectively described in the CID file 53 for the virtual NIC 9NB assigned to the protection control device 12B. At the time of replacement, the IEC 61850 standard-compliant protection control device 16 reads the CID file 53 so that one IEC 61850-standard protection control device 16 operates based on the same logical model as a plurality of existing protection control devices. To do.

  Further, in the above-described equipment replacement procedure, for the procedure of connecting the IEC 61850-compliant protection control device 16 to the duplicated network at the time of equipment replacement, a method of switching the two networks individually from the existing protection control device Alternatively, a method of switching both systems at the same time can be considered.

  Note that the above-described replacement can also be performed by an operation (GUI) on the construction environment screen of the substation control system 1 as shown in FIG. 12 and FIG. 13 as an example. In the example of FIG. 12, an operation (drag and drop) of dragging Relay 1-1 in the virtual IED name 72 column with the cursor 77 and moving it below Relay 2 in the IED name 71 column and dropping it is also possible.

  As another example of the operation on the construction environment screen of the substation control system 1, a virtual NIC folder icon in the protection control device folder icon and an LD folder in the virtual NIC folder icon on the GUI imitating a hierarchical folder structure The above-described replacement operation may be realized by hierarchically displaying LN folder icons within icons and LD folder icons and moving the icons. Furthermore, a batch file on the console instead of the GUI, etc. Then, the above-described replacement operation may be performed.

  Even when the logical models of the virtual IED including the protection control device 12B and the protection control device 16 compatible with the IEC 61850 standard do not completely match, the ICD file 51 of the protection control device 16 compatible with the IEC 61850 standard can be corrected. This correction includes the logical model of the ICD file 51 of the virtual IED including the protection control device 12B, and it is possible to minimize the change of the substation control system 1 by performing the correction as much as possible.

(7) Effects of the present embodiment For the substation server 6, the virtual IED including the protection control device 12B and the protection control device 16 compliant with the IEC 61850 standard are equivalent, no system reconfiguration is required, the control target is not changed, and the substation It is not necessary to change the application program of the server 6. For this reason, the cost for system reconstruction and application program change which were needed for every update of the protection control apparatus 12 can be reduced.

  1 ... Substation control system, 2 ... Control station server, 3 ... HMI, 4 ... Time server, 5 ... Database, 6 ... Substation server, 7 ... Station bus, 8 ... BCU, 9 DESCRIPTION OF SYMBOLS 10 ... IED, 11 ... Measuring instrument, 12 ... Protection control apparatus, 13 ... Process bus, 14 ... Merging unit, 15 ... Protection equipment control apparatus and measuring instrument, 16 ... Protection control corresponding to IEC61850 standard Equipment, 17 ... Service.

Claims (9)

Server,
Facilities for the power grid,
A network connecting the server and the plurality of facilities,
The substation control system for realizing data transmission in which the server and the equipment are standardized via the network,
An intelligent electronic device connected to the network and capable of standardized data transmission;
A virtual system that constitutes a virtual model in the intelligent electronic device,
The virtualization system assigns the equipment that does not conform to the standardized data transmission of the equipment to the virtual model,
The substation control system, wherein the server can execute data transmission with the facility through the virtual model. The substation control system according to claim 1, wherein the facility that does not comply with the standardized data transmission is a protection control device of the power transmission network. The substation control system according to claim 2, wherein the virtualization system manages the virtual model based on identification information of the facility assigned to the virtual model. The substation control system according to claim 3, wherein the virtual system invalidates the virtual model when replacing the equipment assigned to the virtual model with the equipment capable of standardized data transmission. The substation control system according to claim 3, wherein the virtualization system validates the virtual model when assigning the equipment to the virtual model. The substation control system according to claim 3, wherein the virtualization system manages model definition information of the protection control device, and controls validation and invalidation of the virtual model by each of the identification information. The substation control system according to claim 1, wherein validation and invalidation of the virtual model are controlled by a drag-and-drop operation on a GUI. A control method for a substation control system in which a server and a plurality of facilities for a power transmission network realize standardized data transmission via the network,
The substation control system
An intelligent electronic device connected to the network and capable of standardized data transmission;
A virtualization system comprising a virtual model in the intelligent electronic device,
The virtualization system assigns a facility that does not conform to the standardized data transmission of the plurality of facilities to the virtual model,
The control method of a substation control system, wherein the server can execute data transmission with the facility through the virtual model. In intelligent electronic devices with multiple protection controllers connected,
The intelligent electronic device is
A virtual network interface corresponding to the plurality of protection control devices connected;
A plurality of virtual control devices operating on the virtual network interface,
The virtual control device manages identification information of the protection control device and model definition information of the protection control device, and controls activation and invalidation of the virtual control device with each of the identification information. Intelligent electronic device featuring.

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