JP2006311407A - Data communication system for system protection relay device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To monitor and control each relay unit only by setting one IP address to a system protection relay device in which a plurality of relay units are incorporated. <P>SOLUTION: This data communication system for the system protection relay device which is connected to a desired relay unit of the system protection relay device (10) constituted of the plurality of relay units (11, 12) by an operation of a PC (51), displays device information data of the connected relay unit on a screen of the PC and controls a characteristic setting value of the connected relay unit. As for a URL (51a) required for connecting the PC to each relay unit, IP addresses are the same, however, different port number corresponding to each relay unit is set. The system protection relay device has an IP relay means (14) having a function for setting a relay unit of a partner with which the PC communicates based on the port numbers set by the URL. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  According to the present invention, a TCP / IP (transmission control protocol / internet protocol) is connected to a desired relay unit of a system protection relay device composed of a plurality of relay units by operating a PC (personal computer) for monitoring and control. The present invention relates to a data communication system for a system protection relay device that performs communication, displays device information data of a connected relay unit on a PC screen for monitoring and control, and controls a characteristic setting value of the connected relay unit.

In many cases, the system protection relay device used in the power system protection control system is composed of a plurality of relay units even if it is a single device.
Each of the plurality of relay units arranged in the single system protection relay device has device information data (for example, characteristic data such as relay settling value, voltage value, resistance value, temperature, etc.) by a monitoring / controlling PC. ) Must be monitored.
Therefore, it is necessary to connect to a desired relay unit and perform TCP / IP communication by an operation on the monitor / control PC screen, and it is necessary to assign an IP address to each relay unit.

However, there are cases in which only one IP address is assigned to one grid protection relay device depending on the power company due to management restrictions and restrictions on the number of IP addresses.
Conventionally, even if there is one grid protection relay device, if multiple relay units that require screen operation and monitoring are installed, one IP address must be assigned to one relay unit. It was.

FIG. 14 is a diagram for explaining the configuration of a data communication system for a conventional system protection relay device.
In the figure, 40 is a conventional system protection relay device, and a plurality of relay units (for example, two relay units of relay unit A41 and relay unit B42) are incorporated in the system protection relay device 40.
The two relay units (relay unit A41 and relay unit B42) are assigned different IP addresses.
For example, as shown in the figure, it is assumed that “ABC” is assigned as the IP address of the relay unit A41, and “ABCY” is assigned as the IP address of the relay unit B42.

54 is a monitoring / controlling PC for monitoring and controlling each relay unit incorporated in the system protection relay device 40.
By operating the PC 54 on the screen, the PC 54 is connected to a desired relay unit in the system protection relay device 40 to perform TCP / IP communication, and the set value, current value, resistance value, temperature, etc. of the connected relay unit Acquire device information data and display it on the screen, or change the characteristic values such as the set value, current value, and resistance value of the connected relay unit to a predetermined value (that is, change the characteristic setting value). Perform operations to perform operations.
Further, 41a is incorporated (inserted) into the relay unit A41, and is a web server mounted card (abbreviated as a web card in the figure) for communication between the relay unit A41 and the PC 54, and 42a is a relay unit B42. This is a Web server-mounted card that is incorporated in the communication unit and allows the relay unit B42 and the PC 54 to communicate with each other.

Here, it is assumed that the IP address of the PC 54 is “ABCA”.
54a indicates the URL (uniform resource locator) of the relay unit set on the screen of the PC 54 when communicating with the relay unit A41 or the relay unit B42. The URL 54a indicates the relay unit to be connected. An IP address is set.
For example, as shown in the URL 54a, “http: //ABC.X/**.html” is set as the URL of the relay unit A41, and “http: // A” is set as the URL of the relay unit B42. .B.C.Y / **. Html ”is set.
Reference numeral 43 denotes a hub that is a concentrator for connection, 60 denotes a TCP / IP cable, and the relay unit A41 and the relay unit B42 are configured so that the corresponding URL is set on the screen of the PC 54 to set the TCP The TCP / IP communication can be performed by being connected to the PC 54 via the / IP cable 60 and the hub 43, respectively.

FIG. 15 shows an example of the data configuration when transmitting from the PC 54 to the relay unit A41 or the relay unit B42. The data to be transmitted includes the address of the transmission source (PC 54) and the transmission destination (relay unit). It consists of an address and application data A described later.
FIG. 16 shows an example of the data configuration when transmitting (response) from the relay unit A41 or the relay unit B42 to the PC 54. The transmitted data includes the address of the transmission source (relay unit), the transmission It consists of the address of the destination (PC 54) and application data B described later.

Here, first, the case where the device information data (setting value, current value, resistance value, temperature, etc.) of the relay unit A41 is displayed will be described.
That is, a case where the device state of the relay unit A41 is monitored will be described.
In this case, a general-purpose browser is started on the screen of the PC 54, and the URL “http: //ABC.X/**.html” of the relay unit A41 shown in the URL 54a of FIG. 14 is set.
As a result, data in which the transmission source (PC) address and the transmission destination (relay unit) address are set is transmitted together with the application data A requesting transmission of the device information data from the PC 54.
Note that the application data A includes information on what kind of device information data is specifically requested in addition to the device information data transmission request information.

The address setting contents of the data to be transmitted are as shown in FIG. 15. When communicating with the relay unit A41, the IP address “ABCA” of the PC 54 and the PC 54 are used as the transmission source address. Thus, PortNO (port number) “1000”, which is automatically designated when the browser is activated, is set.
Further, the IP address “ABC” acquired from the URL “http: //ABCX/**.html” of the relay unit A41 shown in the URL 54a of FIG. "And the default PortNO" 80 "are set.
The default PortNO is a port number that is automatically set as an initial value.

The transmission data transmitted from the PC 54 reaches the relay unit A41 and the relay unit B42 via the TCP / IP cable 60 and the hub 43.
In the web server card 41a incorporated in the relay unit A41, the IP address “ABCX” of the transmission destination of the data transmitted from the PC 54 has its own IP address “ABCX”. Data is received, and an arbitrary process (for example, a process for changing a set value in response to a request for application data A, or a process for obtaining a resistance value or a current value to obtain a predetermined response format) After that, application data B for device information data response to be described later is created.
The relay unit B42 does not receive the transmitted data because the IP address of the transmission destination of the data transmitted from the PC 54 does not match the IP address of the Web server card 42a incorporated in the relay unit B42.

As shown in FIG. 16, the data transmitted from the relay unit A41 or the relay unit B42 to the PC 54, together with application data for device information data response (that is, device information data of the relay unit) B, is the transmission source (relay unit). Data in which an address and a transmission destination (PC) address are set is transmitted.
As for the address setting contents of the data to be transmitted, the IP address of the transmission destination of the received data and PortNO are set in the transmission source address, and the IP address of the transmission source of the received data and PortNO are set in the transmission destination address. Is set.
For example, when data is transmitted from the relay unit A41 to the PC 54, as shown in FIG. 16, the address setting content of the transmitted data is the IP address “ABC” of the relay unit A41 as the source address. And PortNO “80” are set.
Further, the IP address “ABC” of the PC 54 and the PortNO “1000” are set as the transmission destination address.

Data transmitted from the relay unit A41 reaches the PC 54 and the relay unit B42 via the TCP / IP cable 60 and the hub 43.
Since the IP address “A.B.C.A” of the transmission destination of the data transmitted from the relay unit A41 matches the own IP address “A.B.C.A”, the PC 54 is transmitted to the PC 54. The incoming data is received, subjected to arbitrary processing, and displayed on the screen on the PC 54.
Note that the relay unit B42 does not receive data because the IP address of the transmission destination of the data transmitted from the relay unit A41 does not match the IP address of the web server card 42a incorporated in the relay unit B42.
Although the case where the device information data of the relay unit A41 is displayed on the screen of the PC 54 has been described above, communication is performed in the same procedure when the device information data of the relay unit B42 is displayed on the screen of the PC 54.

Since the URL is different between the relay unit A41 and the relay unit B42, in order to display the respective device information data on the screen of the PC 54, the PC 54 requires a plurality of browsers according to the number of relay units.
Furthermore, after operating the screen of the relay unit A41, when attempting to operate the screen of the relay unit B42, it is necessary to switch the browser consciously.
Further, the communication for displaying the device information data of the relay unit on the screen is performed between the PC 54 and the cards of the web server mounted card 41a of the relay unit A41 and the web server mounted card 42a of the relay unit B42. If either the Web server card 41a or the Web server card 42a is broken and communication is disabled, the device information data of the relay unit in which the broken Web server card is incorporated is displayed on the screen and monitored. Can not be.

In addition, in Japanese Patent Laid-Open No. 2001-45050, for example, in Embodiment 47, a plurality of protection relay devices respectively disposed at a plurality of electrical stations and electronic data stored in the plurality of protection relay devices are disclosed. An electronic terminal that is equipped with software that enables access, executes the software, acquires the electronic data via the hub, and displays the electronic data in multiple protection relay devices on the screen A power system protection control system is shown in which a plurality of relay elements constituting a protection relay device are individually unitized, and each of these unitized relay elements is individually connected to a hub. It is described that the relay element can be added or replaced only by the corresponding relay element, and can be easily and inexpensively performed.
Japanese Patent Laying-Open No. 2001-45050 (FIG. 1, FIG. 19, paragraph 0173)

Monitor the device information data (for example, data such as current relay settling value, voltage value, resistance value, temperature, etc.) on the monitoring / control PC, or relay setting value, voltage value, resistance value, etc. When multiple relay units that need to change the characteristic value to a predetermined value are installed in a single system protection relay device, the desired relay can be operated by operating the screen on the PC for monitoring and control. By connecting to the unit and performing TCP / IP communication, the device information data of the connected relay unit is displayed on the PC screen, and the setting value of the relay settling value, voltage value, resistance value, etc. are changed to a predetermined value. .
In this case, in the above-described prior art, TCP / IP communication cannot be performed via a network such as a hub unless different IP addresses are assigned to the respective relay units.
The same applies to the conventional power system protection control system disclosed in Japanese Patent Laid-Open No. 2001-45050.
Therefore, even if there is only one system protection relay device to be monitored and controlled, a plurality of IP addresses are required corresponding to the Web server mounted card incorporated in each relay unit. From the viewpoint of using / managing, there was a drawback that it was difficult to manage.

  In addition, when monitoring device information data of a plurality of relay units on a PC, or when setting or changing a relay settling value, voltage value, resistance value, or the like to a predetermined value, a plurality of browsers are started, It was necessary to connect to each relay unit and perform TCP / IP communication.

  In addition, when a Web server card built into the relay unit fails, TCP / IP communication cannot be performed between the PC and the relay unit even if the main function of the system protection relay device is normal. The device information data of the relay unit cannot be confirmed from the PC.

  The present invention has been made to solve the above-described problems. Even when a plurality of relay units are incorporated in one system protection relay device, each relay unit has an IP. There is no need to assign an address, and TCP / IP communication is performed with a plurality of relay units using one IP address, and the relay unit is monitored (that is, the device information data of the monitored relay unit is displayed on the PC screen). A data communication system for a system protection relay device capable of controlling a relay unit (that is, setting and changing characteristic values such as a settling value, a voltage value, and a resistance value of a relay of a relay unit to be controlled to a predetermined value) The first purpose is to provide it.

  In addition, even when multiple relay units are incorporated in one system protection relay device, TCP / IP communication is performed with multiple relay units simply by starting one browser on the PC. The relay unit is monitored (that is, the device information data of the monitored relay unit is displayed on the PC screen), or the relay unit is controlled (that is, the set value, voltage value, resistance, etc. of the relay of the controlled relay unit). It is a second object of the present invention to provide a data communication system for a system protection relay device that can change a characteristic value such as a value to a predetermined value.

  In addition, even if the card installed on the Web server for operating and monitoring the device information data of the relay unit incorporated in the system protection relay device fails, TCP / IP communication is performed in the same way as normal. , Monitor the relay unit (that is, display the device information data of the monitored relay unit on the PC screen), or control the relay unit (that is, the set value, voltage value, resistance value of the relay of the controlled relay unit) A third object of the present invention is to provide a data communication system for a system protection relay device that can change the characteristic value such as a predetermined value to a predetermined value.

  A data communication system for a system protection relay device according to the present invention is connected to a desired relay unit of a system protection relay device constituted by a plurality of relay units by operating a personal computer for monitoring and control, and is connected to a TCP / IP A data communication system for a system protection relay device that performs communication and displays device information data of the connected relay unit on the screen of the personal computer for monitoring and control, and controls characteristic setting values of the connected relay unit. The URL required for the personal computer to connect to each relay unit has the same IP address, but a different port number corresponding to each relay unit is set. Based on the port number set in the URL, the persona In which it is provided an IP relay means having a function of setting a partner relay unit computers to communicate.

  Further, the data communication system for the system protection relay device according to the present invention is connected to a desired relay unit of the system protection relay device constituted by a plurality of relay units by operating a personal computer for monitoring / control, and is connected to the TCP. Data communication for system protection relay devices that perform IP communication, display device information data of connected relay units on the screen of the personal computer for monitoring and control, and control characteristic setting values of connected relay units In the system, an identifier for identifying a partner relay unit to be communicated is added to transmitted application data, and the system protection relay device is configured to set a partner relay unit to communicate based on the identifier. IP relay means having the above.

  Further, the data communication system for the system protection relay device according to the present invention is connected to the relay unit of the system protection relay device by the operation of a personal computer for monitoring and control to perform TCP / IP communication, and the connected relay unit Is displayed on the screen of the personal computer for monitoring and control, and is a data communication system for a system protection relay device for controlling the characteristic setting value of the connected relay unit, the relay unit comprising: When a plurality of Web server mounted cards having different IP addresses are arranged and a Web server mounted card that cannot communicate normally is detected, the destination is changed to the IP address of another Web server mounted card to perform communication. An IP relay unit having a function is provided.

According to the present invention, the URL necessary for the personal computer to connect to each relay unit has the same IP address, but a different port number corresponding to each relay unit is set. , Based on the port number set in the URL, it is provided with IP relay means having a function of setting a relay unit with which the personal computer communicates, so that a plurality of relay units are included in one system protection relay device Even in the case of embedded, it is possible to monitor and control each relay unit by performing TCP / IP communication with a plurality of relay units with one IP address.
That is, it is possible to monitor and control only by assigning one IP address to a system protection relay device incorporating a plurality of relay units. Therefore, one IP address is assigned to one system protection relay device. Management method becomes possible.

  Further, according to the present invention, an identifier for identifying a counterpart relay unit to be communicated is added to the transmitted application data, and the system protection relay device functions to set the counterpart relay unit to communicate based on the identifier IP relay means having the above, even if a plurality of relay units exist in one system protection relay device, the user can monitor each relay unit only by starting one browser. Can be controlled.

  According to the present invention, the relay unit has a plurality of Web server mounted cards having different IP addresses, and when a Web server mounted card that cannot communicate normally is detected, the transmission destination is mounted on another Web server. Since the IP relay means has a function to change the IP address of the card to perform communication, even if the communication with the Web server card being communicated is broken and communication cannot be performed normally, a different Web server card can be installed. The relay unit can be monitored and controlled via.

Embodiment 1 FIG.
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 is a diagram showing a configuration example of a data communication system for a system protection relay device according to Embodiment 1 of the present invention.
In FIG. 1, reference numeral 10 denotes a system protection relay device. In the system protection relay device 10, a relay unit A11, a relay unit B12, a hub 13, and an IP (internet protocol) relay means (IP relay unit) 14 are incorporated. ing.
51, device information data (for example, relay settling value, current value, resistance value, temperature, etc.) of the relay unit A11 or relay unit B12 incorporated in the system protection relay device 10 by an operation on the screen. Characteristic data) is displayed on the screen and monitored, and the characteristic value such as the settling value, voltage value, resistance value, etc. of the relay of relay unit A11 or relay unit B12 is changed to a predetermined value and controlled. PC.
The PC 51 is connected to the IP relay means 14 in the system protection relay device 10 by a TCP / IP cable 60.

Reference numeral 11a denotes a Web server mounted card incorporated in the relay unit A11 so that the relay unit A11 and the PC 51 perform TCP / IP communication.
Similarly, 12a is a Web server mounted card incorporated in the relay unit B12 in order for the relay unit B12 and the PC 51 to perform TCP / IP communication.
Note that the CPU card (without reference sign) incorporated in the relay unit in the figure is for performing basic operation as a system protection relay device. For example, the current value or voltage value of the relay From the input information, self-determination calculation processing such as a short circuit is performed, and a trip command to a circuit breaker or the like connected to the transmission line is output based on the calculation result.
Reference numeral 14 a denotes an Ethernet (registered trademark) card in which an S / W for converting an IP address is incorporated, which is incorporated in the IP relay unit (IP relay unit) 14.
That is, the function of the IP relay means 14 is the function itself of the Ethernet (registered trademark) card 14a.

Further, different IP addresses are assigned to the PC 51, the Ethernet (registered trademark) card 14a, the Web server mounted card 11a, and the Web server mounted card 12a, respectively.
For example, as shown in the figure, the IP address of the PC 51 is “ABC”, the IP address of the Ethernet card 14a is “ABC”, and the Web server card 11a The IP address is assigned as “D.E.F.G”, and the IP address of the Web server card 12a is assigned as “D.E.F.H”.
The IP addresses of the Web server mounted card 11a and the Web server mounted card 12a are not IP addresses that should normally be assigned by the user, but are fixed IP addresses set at the time of introduction.

Reference numeral 51a denotes a URL set in the PC 51 when the PC 51 communicates with the relay unit A11 or the relay unit B12 in the system protection relay device 10. For example, as shown in FIG. The URL “http: //ABC.X/**.html: 80” is set, and the URL of the relay unit B12 is “http: //ABC.X/**. Assume that html: 8080 "is set.
Here, “ABC” is the IP address of the IP relay unit 14 to which the PC 51 is connected (that is, the IP address of the Ethernet (registered trademark) card 14a).
“80” is preset as the PortNO of the Web card 11a incorporated in the relay unit A11, and “8080” is preset as the PortNO of the Web card 12a incorporated in the relay unit B12. It is what.
That is, “80” is preset as the PortNO of the Web card 11a incorporated in the relay unit A11, and “8080” is preset as the PortNO of the Web card 12a incorporated in the relay unit B12.

FIG. 2 shows an example of the data structure of transmission data set when data is transmitted from the PC 51 to the IP relay unit 14.
FIG. 3 shows an example of the data structure of transmission data set when data is transmitted from the IP relay unit 14 to the PC 51.
FIG. 4 shows an example of the data structure of transmission data set when data is transmitted from the IP relay means 14 to the relay unit A11 or the relay unit B12.
FIG. 5 shows an example of the data structure of transmission data when data is transmitted from the relay unit A11 or the relay unit B12 to the IP relay unit 14.
FIG. 6 is a conversion table (conversion TBL) that is an S / W that converts an IP address and PortNO incorporated in the Ethernet card 14a of the IP relay unit 14.

The operation of the data communication system for the system protection relay device according to the present embodiment will be described with reference to FIGS.
A case where the device information data of the relay unit A11 is displayed on the screen of the PC 51 will be described.
In this case, first, a general-purpose browser is started on the PC 51, and the URL “http: //ABCC/**.html: 80” of the relay unit A11 set by the URL 51a is designated. The set data (that is, the transmission source address and the transmission destination address) is transmitted from the PC 51 to the Ethernet card 14a of the IP relay means 14 together with the application data A requesting the device information data from the PC 51.
Note that the application data A includes information that specifically requests what kind of device information data is requested in addition to information that requests the relay unit to transmit device information data.

At this time, as shown in FIG. 2, the address setting content of the data to be transmitted is automatically designated when the browser is started as the IP address “ABC” of the PC 51 as the transmission source address. PortNO “1000” is set.
As the destination address, the IP address “ABC” acquired from the URL of the relay unit A11 shown in the URL 51a of FIG. 1 and the PortNO “80” of the relay unit A11 are set.
“ABCX” is the IP address of the Ethernet (registered trademark) card 14 a incorporated in the IP relay means 14.
Data transmitted from the PC 51 reaches the IP relay unit 14 via the TCP / IP cable 60.

The Ethernet (registered trademark) card 14a in the IP relay means 14 receives the data because the IP address of the transmission destination of the data transmitted from the PC 51 matches its own IP address, and the transmission destination of the received data The address is converted based on the conversion TBL (conversion table) shown in FIG. 6, and the data set as shown in FIG. 4 is transmitted to the relay unit side together with the application data A.
That is, the address setting contents of the data transmitted from the IP relay unit 14 to the relay unit side include, as the source address, the IP address “ABC” and PortNO “of the data destination address received from the PC 51. 80 ”is set, and as the transmission destination address, the IP address“ DEFFG ”obtained by converting the transmission source address based on the conversion TBL shown in FIG. 6 and the PortNO“ 80 ”are set.
That is, the preset IP address “D.E.F.G” and Port NO “80” of the relay unit A11 are set as the destination address.

The data transmitted from the IP relay means 14 reaches the relay unit A11 and the relay unit B12 via the hub 13 and the TCP / IP cable 60.
In the Web server card 11a incorporated in the relay unit A11, the IP address “D.E.F.G” of the destination of the data transmitted from the IP relay means 14 has its own IP address “D.E.F.” .G ″ and the data is received, and after arbitrary processing (for example, processing for obtaining the resistance value and current value of the relay according to the request of the application data A and making it into a predetermined response format, etc.) Application data B for device information response is created, and the data configured as shown in FIG.

That is, as shown in FIG. 5, the address setting contents of data transmitted from the relay unit A11 to the IP relay means 14 include the IP address “D, E, F of the destination address of the received data as the source address. , G ”and PortNO“ 80 ”are set, and the IP address“ A, B, C, X ”of the source address of the received data and PortNO“ 80 ”are set as the destination address.
The data transmitted from the relay unit A11 reaches the IP relay unit 14 and the relay unit B12 via the TCP / IP cable 60 and the hub 13.
The Ethernet (registered trademark) card 14a in the IP relay means 14 receives the data because the IP address of the destination address of the received data matches its own IP address, and displays the destination address of the received data. 6 is converted by the conversion TBL shown in FIG. 6 and the data set as shown in FIG.

That is, as shown in FIG. 3, the address setting content of data transmitted from the IP relay means 14 to the PC 51 includes the IP address “A, B, C, X of the destination address of the received data as the source address. ”And PortNO“ 80 ”are set, and the IP address“ A, B, C, A ”obtained by converting the source address by the conversion TBL and PortNO“ 1000 ”are set as the destination address.
Note that the relay unit B12 does not receive data because the IP address of the destination of the data transmitted from the IP relay unit 14 does not match the IP address of the Web server card 12a incorporated in the relay unit B12.

The data transmitted from the Ethernet (registered trademark) card 14 a of the IP relay unit 14 reaches the PC 51 via the TCP / IP cable 60.
The PC 51 receives the data because the IP address “A, B, C, A” of the destination address of the transmitted data matches the IP address “A, B, C, A” of the PC 51 itself, and the application data Arbitrary processing is performed on B, and the device information data of the relay unit A11 is displayed on the screen on the PC 51.

The above has described the case where the device information data of the relay unit A11 (ie, the relay settling value, voltage value, resistance value, temperature, etc.) is displayed on the screen of the PC 51, but the relay unit A11 is controlled from the PC 51 (ie, When setting characteristic values such as the settling value, voltage value, and resistance value of the relay of the relay unit to be controlled to a predetermined value), as the application data A transmitted from the PC 51, the setting change target (setting value, voltage) Value, resistance value, etc.) and information on the set value may be included.
As a result, even when a plurality of relay units are incorporated in one system protection relay device, it is not necessary to assign an IP address to each relay unit, and a desired relay unit can be obtained with one IP address. TCP / IP communication with A11 can be performed to control relay unit A11.

In the above description, the case where the relay unit A11 is monitored or controlled by performing TCP / IP communication with the relay unit A11 has been described, but the same procedure is used when the relay unit B11 is monitored or controlled. The IP address and PortNO can be set to perform TCP / IP communication, and the relay unit B11 can be monitored or controlled.
Further, the case where two relay units are incorporated in the system protection relay device has been described as an example, but the present invention is not limited to this, and three or more relay units may be incorporated.

As described above, the data communication system for the system protection relay device according to the present embodiment has a plurality of relay units (for example, the relay unit A11 and the relay unit B12) by the operation of the monitoring / control personal computer (51). ) Is connected to a desired relay unit of the system protection relay device (10) configured to perform TCP / IP communication, and the device information data of the connected relay unit is displayed on the screen of the personal computer (51) for monitoring and control A data communication system for a system protection relay device that displays and controls the characteristic setting value of the connected relay unit, and the URL (51a) necessary for the personal computer (51) to connect to each relay unit is: The IP address is the same, but a different port number corresponding to each relay unit. The system protection relay device (10) has a function of setting a relay unit with which the personal computer (51) communicates based on the port number set by the URL (51a). Means 14 are provided.
Thereby, even when a plurality of relay units are incorporated in one system protection relay device, it is possible to monitor and control a desired relay unit only by assigning one IP address.

Embodiment 2. FIG.
FIG. 7 is a diagram showing a configuration example of a data communication system for a system protection relay device according to Embodiment 2 of the present invention.
The H / W configuration of the data communication system for the system protection relay device according to the present embodiment is basically the same as that of the data communication system for the system protection relay device according to the first embodiment, but the relay on the PC Since the URL setting method of the unit and the contents / configuration / operation of the transmission data are different, the description will be made with reference numerals different from those in FIG.
In FIG. 7, reference numeral 20 denotes a system protection relay device. In the system protection relay device 20, a relay unit A21, a relay unit B22, a hub 23, and an IP relay means (IP relay unit) 24 are incorporated.
52, device information data (for example, relay settling value, current value, resistance value, temperature, etc.) of the relay unit A21 or relay unit B22 incorporated in the system protection relay device 20 by an operation on the screen. Characteristic data) is displayed on the screen for monitoring, and the characteristic value such as the settling value, voltage value, resistance value, etc. of the relay of relay unit A21 or relay unit B22 is changed to a predetermined value and controlled. PC. The PC 52 is connected to the IP relay means 24 in the system protection relay device 20 by a TCP / IP cable 60.

Reference numeral 21a denotes a Web server mounted card incorporated in the relay unit A21 in order for the relay unit A21 and the PC 52 to perform TCP / IP communication.
Similarly, 22a is a Web server-mounted card incorporated in the relay unit B12 so that the relay unit B22 and the PC 52 perform TCP / IP communication.
As described in the first embodiment, the CPU card (without reference numerals) incorporated in the relay unit in the figure is for performing basic operation as a system protection relay device. From the input information such as the relay current and voltage, a self-determination calculation process such as a short circuit is performed, and a trip command to the circuit breaker connected to the power transmission line is output based on the calculation result.
Reference numeral 24 a denotes an Ethernet (registered trademark) card in which an S / W for converting an IP address is incorporated, and is incorporated in the IP relay unit (IP relay unit) 24.
That is, the function of the IP relay means 14 is the function itself of the Ethernet (registered trademark) card 24a.

The PC 52, the Ethernet (registered trademark) card 24a, the Web server mounted card 21a, and the Web server mounted card 22a are assigned different IP addresses.
For example, as in the first embodiment, “ABC” is used as the IP address of the PC 52, “ABCCX” is used as the IP address of the Ethernet (registered trademark) card 24a, and the Web server. It is assumed that “D.E.F.G” is assigned as the IP address of the on-board card 21a, and “D.E.F.H” is assigned as the IP address of the Web server on-board card 22a.
The IP addresses of the Web server mounted card 21a and the Web server mounted card 22a are not fixed IP addresses that should normally be assigned by the user, but are fixed IP addresses set at the time of introduction.

Reference numeral 52a denotes a URL set in the PC 52 when the PC 52 communicates with the relay unit A21 or the relay unit B22. For example, two relays of the relay unit A21 and the relay unit B22 as shown in FIG. Assume that “http: //ABC.X/**.html” is set as a URL common to the units.
Here, “ABC” is the IP address of the IP relay unit 24 to which the PC 52 is connected (that is, the IP address of the Ethernet (registered trademark) card 24a).
In the first embodiment described above, a different PortNO is set for the PortNO of the Web card 11a and the Web card 12a. However, in this embodiment, the same PortNO for the Web card 21a and the Web card 22a, for example, “80” is set.

FIG. 8 shows an example of the data structure of transmission data set when data is transmitted from the PC 52 to the IP relay unit 24.
FIG. 9 shows an example of the data structure of transmission data set when data is transmitted from the IP relay unit 24 to the PC 52.
FIG. 10 shows an example of the data structure of transmission data set when data is transmitted from the IP relay means 24 to the relay unit A21 or the relay unit B22.
FIG. 11 shows an example of the data structure of transmission data when data is transmitted from the relay unit A21 or the relay unit B22 to the IP relay unit 24.
12 is a conversion table (conversion TBL) that is incorporated in the Ethernet (registered trademark) card 24a of the IP relay means 24 and is an S / W that converts an IP address and PortNO based on an “identifier” to be described later. It is.

The operation of the data communication system for the system protection relay device according to the present embodiment will be described with reference to FIGS.
A case where the device information data of the relay unit A21 is displayed on the screen of the PC 52 will be described.
In this case, first, a general-purpose browser is started on the PC 52, and a URL “http: // ABCCC / **” common to the relay unit A21 and the relay unit B22 set by the URL 52a is entered. By specifying, together with the application data A requesting device information data from the PC 52, the set data is transmitted from the PC 52 to the Ethernet (registered trademark) card 24a of the IP relay means 24.

In FIG. 8 to FIG. 12, “α” and “β” added to the header of application data A or application data B are “identifiers” for identifying the relay unit of the communication partner. The application data A in the present embodiment includes information on requesting transmission of device information data to the relay unit and information on what device information data is specifically requested, as well as the relay unit of the communication partner An identifier for identification is also included.
When the identifier “α” is added to the application data A, the communicating relay unit is the relay unit A21. When the identifier “β” is added to the application data A, the communicating relay unit is the relay unit. It is identified as B22.

In the present embodiment, as shown in FIG. 8, the address setting content of data transmitted from the PC 52 to the Ethernet (registered trademark) card 24a of the IP relay means 24 is the IP address “A” of the PC 52 as the source address. .BCA ”and PortNO“ 1000 ”, which is automatically specified when the browser is started, are set.
Here, when the communication partner is the relay unit A21, the identifier “α” is added to the application data A, and when the communication partner is the relay unit B22, the identifier “β” is added to the application data A. Has been.
Further, as the transmission destination address, the IP address “ABC” and the PortNO “80” acquired from the URL 52a are set.
“ABCX” is an IP address of the Ethernet (registered trademark) card 24 a incorporated in the IP relay means 24.
Data transmitted from the PC 52 reaches the IP relay unit 14 via the TCP / IP cable 60.

The Ethernet (registered trademark) card 24a of the IP relay means 24 receives the data because the IP address of the transmission destination of the data transmitted from the PC 52 coincides with its own IP address.
Then, the Ethernet (registered trademark) card 24a converts the transmission destination address of the received data based on the conversion TBL shown in FIG. 12, and is set as shown in FIG. 10 together with the application data A to which the identifier is added. Send the data of the configuration to the relay unit side.
That is, the address setting contents of the data transmitted from the Ethernet (registered trademark) card 24a of the IP relay means 24 to the relay unit side are the IP address “AB” of the data transmission destination address received from the PC 52 as the transmission source address. C.X ”and PortNO“ 80 ”are set, and as the transmission destination address, an IP address obtained by converting the transmission source address based on the conversion TBL shown in FIG. 12 and PortNO are set.

That is, as shown in FIG. 10, when the identifier “α” is added to the application data A received from the PC 52, the Ethernet (registered trademark) card 24a of the IP relay means 24 is the relay unit A21. If it is determined (identified), the IP address of the transmission destination address is set to the preset IP address “DEFFG” of the relay unit A21.
Similarly, when the identifier “β” is added to the application data A received from the PC 52, it is determined (identified) that the communication partner is the relay unit B22, and the IP address of the transmission destination address is set in advance. Is set to the IP address “D.E.F.H” of the relay unit B22.
At this time, PortNO does not change and is “80” in both cases before and after the IP address conversion.

The data transmitted from the IP relay means 24 reaches the relay unit A21 and the relay unit B22 via the hub 23 and the TCP / IP cable 60.
The Web server-mounted card 21a incorporated in the relay unit A21 has the IP address “D.E.F.G” of the destination of the data transmitted from the IP relay means 24 as its own IP address “D.E.F.” .G ″ and data are received, and after arbitrary processing (for example, processing for obtaining a resistance value or a current value of a relay according to a request of application data A and making it into a predetermined response format, etc.) Then, the application data B for device information response is created, and the data configured as shown in FIG.

That is, as shown in FIG. 11, the address setting contents of data transmitted from the relay unit A21 to the IP relay means 24 include the IP address “D, E, F of the transmission destination address of the received data as the transmission source address. , G ”and PortNO“ 80 ”are set, and the IP address“ A, B, C, X ”of the source address of the received data and PortNO“ 80 ”are set as the destination address.
Note that the relay unit B12 does not receive data because the IP address of the transmission destination of the data transmitted from the IP relay means 14 does not match the IP address of the Web server card 12a incorporated in the relay unit B12.

The data transmitted from the relay unit A21 reaches the IP relay unit 24 and the relay unit B22 via the TCP / IP cable 60 and the hub 23.
The Ethernet (registered trademark) card 24a in the IP relay means 24 receives the data because the IP address of the transmission destination address of the received data matches the IP address of itself, and displays the transmission destination address of the received data. The data is converted by the conversion TBL shown in FIG. 12, and the data set as shown in FIG.
That is, as shown in FIG. 9, the address setting content of the data transmitted from the IP relay means 24 to the PC 52 includes the IP address “A, B, C, X of the destination address of the received data as the source address. ”And PortNO“ 80 ”are set, and the IP address“ A, B, C, A ”obtained by converting the source address by the conversion TBL and PortNO“ 1000 ”are set as the destination address.
At this time, the identifier “α” is added to the application data B transmitted from the relay unit A21, and the identifier “β” is added to the application data B transmitted from the relay unit B22.
Note that the relay unit B22 does not receive data because the IP address of the transmission destination of the data transmitted from the relay unit A21 does not match the IP address of the web server card 22a incorporated in the relay unit B22.

The data transmitted from the Ethernet (registered trademark) card 24 a of the IP relay unit 24 reaches the PC 52 via the TCP / IP cable 60.
The PC 52 receives the data because the IP address “A, B, C, A” of the destination address of the transmitted data matches the IP address “A, B, C, A” of the PC 52 itself, and the application data Arbitrary processing is performed on B, and the device information data of the relay unit A22 is displayed on the screen on the PC 52.

The above has described the case where the device information data of the relay unit A21 is displayed on the screen of the PC 52. However, the relay unit A21 is controlled from the PC 52 (that is, the settling value, voltage value, resistance value, etc. of the relay of the relay unit to be controlled). In the case of changing the characteristic value to a predetermined value), as in the first embodiment, the application data A transmitted from the PC 52 is subject to setting change (setting value, voltage value, resistance value, etc.) and its What is necessary is just to include the information of a specific setting value.
In this manner, by adding an identifier to the application data A to be transmitted, even when a plurality of relay units are incorporated in one system protection relay device, an IP address is assigned to each relay unit. There is no need for allocation, and it is possible to control the relay unit by performing TCP / IP communication with a desired relay unit using one IP address.

In the above description, the case where the relay unit A21 is monitored or controlled by performing TCP / IP communication with the relay unit A21 has been described. However, even when the relay unit B22 is monitored or controlled, the same procedure is used. The IP address and PortNO can be set to perform TCP / IP communication, and the relay unit B22 can be monitored or controlled.
Further, the case where two relay units are incorporated in the system protection relay device has been described as an example, but the present invention is not limited to this, and three or more relay units may be incorporated.

As described above, the data communication system for the system protection relay device according to the present embodiment has a plurality of relay units (for example, the relay unit A21 and the relay unit B22) by the operation of the monitoring / control personal computer (52). ) Is connected to a desired relay unit of the system protection relay device (20) configured to perform TCP / IP communication, and the device information data of the connected relay unit is displayed on the screen of the personal computer (52) for monitoring and control A data communication system for a system protection relay device that displays and controls a characteristic setting value of a connected relay unit, and an identifier for identifying a relay unit of a communication partner is added to transmitted application data The system protection relay device (20) communicates based on the identifier. And a IP relay means (24) having a function of setting a relay unit.
As a result, as in the case of the first embodiment, even when a plurality of relay units are incorporated in one system protection relay device, it is possible to monitor a desired relay unit only by assigning one IP address.・ Control is possible.

Embodiment 3 FIG.
FIG. 13 is a diagram showing a configuration example of a data communication system for a system protection relay device according to Embodiment 3 of the present invention.
In FIG. 13, reference numeral 30 denotes a system protection relay device. In the system protection relay device 30, a relay unit A <b> 31, a hub 33, and an IP relay unit (IP relay unit) 34 are incorporated.
53, the operations on the screen, equipment information data relay unit A31 that is built into the system protection relay device 30 (e.g., setting value of the relay, the current value, the resistance value, characteristic data such as temperature) Is displayed on the screen for monitoring, and a characteristic value such as a settling value, a voltage value, and a resistance value of the relay of the relay unit A31 is changed to a predetermined value and controlled.
As shown in the figure, the PC 53 is connected to the IP relay means 34 in the system protection relay device 30 by a TCP / IP cable 60.

Reference numeral 31a denotes a Web server mounted card incorporated in the relay unit A31 in order for the relay unit A31 and the PC 53 to perform TCP / IP communication.
Further, in the present embodiment, as a backup at the time of failure, another Web server mounted card 31b in which an IP address different from that of the Web server mounted card 31a is set in the relay unit A31.
As described in the first and second embodiments, the CPU card (without reference numerals) incorporated in the relay unit A31 in the figure is for performing basic operations as a system protection relay device. Thus, for example, a calculation process for self-determination such as a short circuit is performed from input information such as the current and voltage of the relay, and a trip command to a circuit breaker connected to the transmission line is output based on the calculation result.

The IP relay means (IP relay unit) 34 is automatically connected to the Web in an emergency (for example, when a card installed in the Web server fails and communication between the PC 53 and the relay unit A31 becomes impossible). An Ethernet (registered trademark) card 34a in which S / W of a function for converting the IP address of the server mounted card is incorporated is incorporated.
It is assumed that the PC 53, the Ethernet (registered trademark) card 34a, the web server loaded card 31a, and the web server loaded card 31b are assigned different IP addresses.
For example, as shown in the figure, “ABC” is the IP address of the PC 53, “ABC” is the IP address of the Ethernet (registered trademark) card 34 a, and “D.E.F.G” is assigned as the IP address, and “D.E.F.H” is assigned as the IP address of the Web server card 31b.
However, the IP addresses of the Web server mounted card 31a and the Web server mounted card 31b are not fixed IP addresses that should be assigned by the user, but are fixed IP addresses set at the time of introduction.

Based on FIG. 13, the characteristic operation of the data communication system for the grid protection relay device according to the present embodiment will be described.
The Ethernet (registered trademark) card 34a of the IP relay unit 34 in the present embodiment has an abnormality in the Web server mounted card incorporated in the relay unit A31 (for example, data is not transmitted from the Web server mounted card or transmitted). A function (S / W) for detecting the presence / absence of data that is not in the correct format.
The Ethernet card 34a communicates by converting the IP address so that the PC 53 and the Web server mounted card 31a are connected when the Web server mounted card 31a of the relay unit A31 of the communication partner is normal. To implement.
Further, when the Ethernet (registered trademark) card 34a of the IP relay means 34 determines that the Web server mounted card 31a of the relay unit A31 is abnormal, the IP address of the connected Web server mounted card is assigned to the same relay unit A31. It is converted to the IP address of another normal Web server mounted card 31b that is incorporated.

The Ethernet (registered trademark) card 34a of the IP relay means 34 in the present embodiment transmits data to the Web server mounted card 31a, and there is no response from the Web server mounted card 31a for a certain period of time, or the Web server mounted card. When the format of the response data acquired from the card 31a is unexpected (for example, there is no flag that must be set), a data retransmission request is made to the Web server card 31a several times.
If such an abnormal phenomenon continues, it is determined that the web server card 31a is faulty, and the IP address of the connected web server card is changed to another normal web server card. It is converted to the IP address of 31b.
By doing so, even if the Web server card 31a of the relay unit A31 breaks down, it is possible to automatically switch to the backup Web server card 31b and continue communication.
In the above description, the case where one relay unit A31 is arranged in one system protection relay device 30 is described. However, the present invention is not limited to this, and the first embodiment and the second embodiment are not limited thereto. In addition, in each of the plurality of relay units, a function for detecting the presence or absence of abnormality of the Web server mounted card is added to the IP relay means by incorporating a Web server mounted card for backup at the time of failure. May be.

As described above, in the data communication system for the system protection relay device according to the present embodiment, the relay unit A (31) of the system protection relay device (30) is operated by the operation of the monitoring / control personal computer 53). TCP / IP communication is performed by connecting to the device, and the device information data of the connected relay unit A (31) is displayed on the screen of the monitoring / control personal computer (53), and the connected relay unit A (31) is displayed. In the data communication system for the system protection relay device for controlling the characteristic setting value, the relay unit A (31) includes a plurality of Web server-mounted cards (31a, 31b) having different IP addresses, If the card with the web server (31a) that cannot be properly executed is detected, the destination is changed to another web server loaded card. And a IP relay means having a function to perform communication by changing the IP address of (31b) (34).
As a result, even when the web server card in communication is broken and communication cannot be performed normally, the relay unit can be monitored and controlled via another web server card.

  Even if a plurality of relay units are incorporated in one system protection relay device, the present invention performs TCP / IP communication with a plurality of relay units with one IP address, This is useful for realizing a data communication system of a system protection relay device that can be monitored or controlled.

It is a figure which shows the structural example of the data communication system for the system protection relay apparatuses by Embodiment 1 of this invention. In Embodiment 1, it is a figure which shows the data structural example of the data transmitted with respect to an IP relay means from PC. 6 is a diagram illustrating a data configuration example of data transmitted from an IP relay unit to a PC in Embodiment 1. FIG. In Embodiment 1, it is a figure which shows the data structural example of the data transmitted with respect to the relay unit side from an IP relay means. In Embodiment 1, it is a figure which shows the data structural example of the data transmitted with respect to an IP relay means from the relay unit side. In Embodiment 1, it is a figure which shows the conversion table integrated in the IP relay means. It is a figure which shows the structural example of the data communication system for the system protection relay apparatuses by Embodiment 2 of this invention. In Embodiment 2, it is a figure which shows the data structural example of the data transmitted with respect to an IP relay means from PC. In Embodiment 2, it is a figure which shows the data structural example of the data transmitted with respect to PC from an IP relay means. In Embodiment 2, it is a figure which shows the data structural example of the data transmitted with respect to the relay unit side from an IP relay means. In Embodiment 2, it is a figure which shows the data structural example of the data transmitted with respect to an IP relay means from the relay unit side. In Embodiment 2, it is a figure which shows the conversion table incorporated in the IP relay means. It is a figure which shows the structural example of the data communication system for the system protection relay apparatuses by Embodiment 3 of this invention. It is a figure which shows the data communication system for the conventional system protection relay apparatuses. It is a figure which shows the data structure of the data transmitted with respect to the relay unit side from PC in the conventional data communication system for system protection relay apparatuses. It is a figure which shows the data structure of the data transmitted with respect to PC from the relay unit side in the data communication system for the conventional system protection relay apparatuses.

Explanation of symbols

10, 20, 30 System protection relay device 11, 21, 31 Relay unit A
12, 22 Relay unit B
11a, 21a, 31a, 31b Web server mounted card of relay unit A 12a, 22a Web server mounted card of relay unit B 13, 23, 33 Hub 14, 24, 34 IP relay means 14a, 24a, 34a Ethernet (registered trademark) Card 51, 52, 53 PC
51a, 52a, 53a Relay unit URL
60 TCP / IP cable

Claims (5)

By operating a personal computer for monitoring and control, TCP / IP communication is performed by connecting to a desired relay unit of a system protection relay device constituted by a plurality of relay units, and device information data of the connected relay unit is monitored. A data communication system for a system protection relay device that is displayed on the screen of a control personal computer and controls the characteristic setting values of the connected relay unit,
The URL necessary for the personal computer to connect to each relay unit has the same IP address, but a different port number corresponding to each relay unit is set.
The system protection relay device includes IP relay means having a function of setting a relay unit with which the personal computer communicates based on the port number set by the URL. Data communication system for apparatus.   2. The system protection relay device according to claim 1, wherein the IP relay means converts an IP address and a port number set in the URL into an IP address and a port number of a communicating relay unit. Data communication system. By operating a personal computer for monitoring and control, TCP / IP communication is performed by connecting to a desired relay unit of a system protection relay device constituted by a plurality of relay units, and device information data of the connected relay unit is monitored. A data communication system for a system protection relay device that is displayed on the screen of a control personal computer and controls the characteristic setting values of the connected relay unit,
An identifier for identifying the relay unit of the communication partner is added to the transmitted application data,
A data communication system for a system protection relay device, wherein the system protection relay device includes IP relay means having a function of setting a relay unit to communicate with based on the identifier.   4. The system protection according to claim 3, wherein the IP relay means converts the transmitted IP address and port number into the IP address and port number of the communicating relay unit based on the identifier. Data communication system for relay device. By operating the personal computer for monitoring / control, it connects to the relay unit of the system protection relay device to perform TCP / IP communication, and the device information data of the connected relay unit is displayed on the screen of the personal computer for monitoring / control. And a data communication system for a system protection relay device for controlling a characteristic setting value of a connected relay unit,
In the relay unit, a plurality of cards equipped with Web servers with different IP addresses are arranged.
A system characterized by comprising an IP relay means having a function of performing communication by changing the transmission destination to the IP address of another Web server mounted card when a Web server mounted card that cannot communicate normally is detected A data communication system for a protection relay device.

Images