JP2009105625A - Protective relay device and method of switching transmission data format - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically switch transmission data formats of data to transmitted between a central apparatus and a plurality of terminal devices. <P>SOLUTION: In a terminal device, a device 12b of a transmission part 12 receives transmission data received through a repeater 11, and detects format selection information for selecting a transmission data format from the received transmission data. Next, a control part 12c checks the device 12b as to whether to detect the format selection information, and transmits instructions to execute reconfiguration to the device 12b of the terminal device through a transmission line 12d when the format selection information is detected. Then, the device 12b performs reconfiguration according to a configuration program loaded from a storing part 12a and the transmission data format in accordance with the format selection information included in the received transmission data. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a data transmission processing technique in a protective relay device.

  As a protective relay device (or a protective relay system), a device comprising a central device (Master Station) and a plurality of terminal devices (Remote Station) as a loop relay is known. Some protective relay devices implement functions by performing transmission in a dedicated transmission data format (see, for example, Patent Document 1).

  Based on FIG. 3, the protection relay device described above will be described. The protective relay device in FIG. 3 includes a central device MS and terminal devices RS1 to RS3, and the central device MS and the terminal devices RS1 to RS3 are loop-shaped communication lines (or ring-shaped communication lines; for example, a polling method) And the like, and each performs data communication based on a dedicated data format via the communication line 100.

Further, transmission data based on the above-described dedicated transmission data format is configured by a hardware logic circuit provided in the central device and the terminal device, or an FPGA (Field Programmable Gate Array: Field Programmable Gate) which is a kind of programmable logic device. Array).
JP-A-8-223781 (paragraphs [0009] to [0013], [0022])

  In the above-described protection relay device, when changing the dedicated transmission data format, it is necessary to stop and change all the central devices and the plurality of terminal devices at the same time. This is because the connection is made in a loop, so that any one of the central device and the plurality of terminal devices cannot continue the process when receiving transmission data of a different transmission data format.

  In addition, it is difficult for the person in charge alone to stop all the devices at the same time, and it is also difficult to carry out the changing work on all the terminals at the same time.

  However, with the advancement of technology, for example, even if a new effective transmission data format may be used for the transition from an old protection relay device to a new protection relay device, the above-described difficulties may occur. Because it is, it will not be realized easily.

  The present invention has been made based on the above problems, and a protective relay device and transmission for automatically switching the transmission data format of data transmitted between a central device and a plurality of terminal devices connected by a ring network It is to provide a data format switching method.

  In order to solve the above-mentioned problem, the invention described in claim 1 comprises a repeater connected to a ring network, a programmable logic device having a reconfiguration function for performing reconfiguration, and a control unit, and the programmable A logic device and a transmission unit that connects the control unit via a transmission line, and a central device including a communication unit that performs data communication using the repeater and a plurality of terminal devices including the communication unit, A protection relay device that performs data communication between the central device and the terminal device via the ring network, wherein a transmission unit of the communication unit of the terminal device transmits transmission data according to a specific transmission data format. A configurator that stores multiple combinations of configuration data and transmission data format data for processing. A storage unit, and the control unit of the transmission unit of the communication unit of the terminal apparatus checks whether or not format selection information for selecting a transmission data format is detected, and the format selection information Means for transmitting a reconfiguration execution instruction for instructing execution of reconfiguration to the programmable logic device of the terminal device via the transmission line, the communication of the terminal device. A programmable logic device of a transmission unit of the unit receives transmission data transmitted from the central device and received via a repeater of the communication unit of the terminal device, and detects format selection information from the received transmission data; Communication of the terminal device that has received the reconfiguration execution instruction The programmable logic device of the transmission unit loads the configuration program and the transmission data format data from the configuration storage unit of the transmission unit of the communication unit of the terminal device according to the format selection information included in the received transmission data, And means for performing reconfiguration using a reconfiguration function provided in advance in accordance with the loaded configuration program and transmission data format data.

  The invention described in claim 2 is a configuration memory for storing a plurality of combinations of a repeater connected to a ring network, a configuration program for processing transmission data according to a specific transmission data format, and transmission data format data. A programmable logic device having a reconfiguration function for performing reconfiguration, a control unit, a transmission unit in which the programmable logic device and the control unit are connected by a transmission line, and data using the repeater Used as a protective relay device having a central device including a communication unit for performing communication and a plurality of terminal devices including the communication unit, each performing data communication via the ring network with the central device and the terminal device A transmission data format switching method, comprising: Transmission data transmitted from the device and received via the repeater of the communication unit of the terminal device is received by the programmable logic device of the transmission unit of the terminal device, and the received transmission data receives format selection information for selecting a transmission data format. And the control unit of the transmission unit of the communication unit of the terminal device checks whether or not format selection information is detected, and if the format selection information is detected, the terminal A step of transmitting a reconfiguration execution instruction for instructing execution of reconfiguration to the programmable logic device of the apparatus via the transmission line; and a communication unit of the terminal device that has received the reconfiguration execution instruction. Programmable logic device of transmission unit Loads the configuration program and transmission data format data from the configuration storage unit of the transmission unit of the communication unit of the terminal device according to the format selection information included in the received transmission data, and loads the loaded configuration program And a step of performing reconfiguration using a reconfiguration function provided in advance according to the transmission data format data.

  According to the first and second aspects of the present invention, the transmission data format can be automatically switched in each terminal device.

  As described above, according to the first and second aspects of the invention, since the transmission data format is automatically switched in each terminal device, it is not necessary to stop all the central device and the terminal device and change them simultaneously. Even a single person in charge can switch the transmission data format.

  These can contribute to the maintenance technical field related to protective relay devices.

  An example of the configuration of the protective relay device in the present embodiment will be described with reference to FIG.

  In the protective relay device in FIG. 4, as in FIG. 3, the central device MS and the terminal devices RS <b> 1 to RS <b> 3 are connected by a loop communication line (for example, an optical communication line of a ring network) 100. Communication is performed via the communication line 100. Furthermore, the central device MS and the terminal devices RS1 to RS3 include a communication unit Sa and a relay unit Sb having the same specifications.

  Since the functional unit related to the transmission data format corresponds to the communication unit Sa that performs data communication, the configuration of the communication unit Sa will be described in detail with reference to FIG.

The communication unit Sa in FIG. 1 includes an optical repeater (or an optical repeater) 11 connected to the communication line 100 and a transmission unit (for example, a transmission printed board) 12 that performs communication using the optical repeater. The optical repeater 11 and an FPGA 12b described later are connected by a transmission line. In this embodiment, an optical communication line is used, but a general telecommunication line may be used. When the telecommunications line is used, a general repeater is used.

  The transmission unit 12 processes (or represents) a configuration program for processing transmission data according to a specific transmission data format and data describing (or expressing) a transmission data format. Hereinafter, a configuration storage unit for storing a plurality of combinations of transmission data format data (for example, a rewritable non-volatile storage device such as a flash memory or the like may be used as long as a plurality of configuration programs can be stored) 12a, FPGA 12b having a reconfiguration function for accessing and reconfiguring the configuration storage unit 12a and a transmission function, and a CPU (Central Processing Unit) as a control unit 12c.

  The transmission unit 12 may include a storage unit (for example, a volatile memory) that stores temporary information (for example, transmission data). The FPGA 12b and the configuration storage unit 12a are connected by a transmission line. Data transmission is performed between the FPGA 12b and the CPU 12c via an address data bus (transmission path) 12d. Further, the FPGA 12b and the CPU 12c are also connected by a function pin 12e. The function pin 12e is used to write (write or load) a configuration program and transmission data format data created in advance into the configuration storage unit via the FPGA 12b.

  The transmission data format data is data corresponding to the configuration program, for example, data having one or more combinations of a tag indicating the data element of the transmission data format and the value of the data element. In FIG. 1, the configuration program Pa and the configuration program Pb exist, but it can be considered that the transmission data format data Fa and the transmission data format data Fb corresponding to each exist (or are preloaded). .

  The configuration storage unit 12a also includes a configuration program Pa for processing transmission data format data Fa indicating an old transmission data format (hereinafter referred to as old transmission data format), a new transmission data format (hereinafter referred to as new transmission data). It is assumed that a configuration program Pb for processing transmission data format data Fb indicating (format) is stored in advance.

  The old transmission data format and the new transmission data format include common control information. For example, the transmission data format has a transmission frame configuration as shown in FIG.

  The transmission frame F in FIG. 2 has a synchronization frame F1 and control information F2. Information such as the synchronization frame F1 and the control information F2 is delimited by delimiter bits. In FIG. 2, “0” is used as the value of the delimiter bit.

  A broken line portion α is a detail of the vicinity of the control information F2 in the transmission frame F, and shows a delimiter bit F21 and control information F2 '(that is, the same as the control information F2). In FIG. 2, the control information F2 'is composed of 8 bits.

  The control information F2 'includes information for selecting a transmission data format (that is, transmission data format selection information) F22. In FIG. 2, the transmission data format selection information F22 is assigned to the fifth bit (bit 5), and when the transmission data format selection information F22 is set to “0”, the transmission frame F is the old transmission data format. And “1” indicates that the transmission frame F selects a new transmission data format.

  A transmission data format switching method according to the present embodiment will be described with reference to FIGS. In the following description, it is assumed that communication using the old transmission data format is performed in advance. That is, it is assumed that the communication unit Sa operates based on the configuration program Pa and the transmission data format Fa.

  First, the FPGA 12b of the transmission unit 12 of the communication unit Sa (hereinafter, abbreviated as communication unit Sa) of the terminal device (for example, the terminal device RS1) is transmitted from the central device MS and received via the optical repeater 11. The format selection information F22 is detected from the transmission data. It is assumed that the transmission data is composed of the transmission frame F in FIG.

  Next, the CPU 12c of the transmission unit 12 of the terminal device RS1 checks the FPGA 12b whether or not the format selection information F22 is detected (for example, at every specific time interval). When format selection information F22 (for example, format selection information F22 set to “1”) is detected, the CPU 12c of the transmission unit 12 of the terminal device RS1 performs reconfiguration with respect to the FPGA 12b of the terminal device RS1. (That is, a reconfiguration execution instruction is transmitted via the address data bus 12d).

  Upon receiving the reconfiguration execution instruction, the FPGA 12b, in accordance with the format selection information F22 included in the received transmission data, the configuration program (for example, the configuration program Pb) and the data transmission format data (for example, data transmission) Format data Fb) is loaded from the configuration storage unit 12a of the terminal device RS1, and reconfiguration is performed using a reconfiguration function provided in advance in accordance with the loaded configuration program and transmission data format data.

  For example, the reconfiguration refers to a specific transmission data format (for example, a new transmission data format) according to a loaded configuration program (for example, the configuration program Pb) and data transmission format data (for example, data transmission format data Fb). ) To initialize the FPGA 12b so that it can be handled.

  Finally, the reconfiguration program of the central device MS including the communication unit Sa and the terminal devices RS1 to RS3 in FIG. 1 is switched based on the format selection information F22. That is, the transmission data format handled by the protection relay device in this embodiment can be switched.

  In this embodiment, each procedure in the transmission data format switching method described above is implemented as each means in the communication unit of the protective relay device (for example, the means in the communication unit of the protective relay device is implemented as a computer program). Also good.

  As described above, even in the transition from the central device and terminal device corresponding to the old transmission data format to the central device and terminal device corresponding to the new transmission data format, the communication unit in this embodiment can be provided in common. For example, it is not necessary to move each device simultaneously on the same day.

  In addition, since the shift to each device corresponding to the new transmission data format can be performed individually, the number of persons in charge is small.

  Although the present invention has been described in detail only for the specific examples described above, it is obvious to those skilled in the art that various changes and modifications are possible within the scope of the technical idea of the present invention. Such variations and modifications are naturally within the scope of the claims.

  For example, in this embodiment, since two transmission data formats are handled (old transmission data format and new transmission data format), transmission data format selection information is represented by 1 bit, but there are three or more transmission data formats. In this case, the number of bits that can represent the number of transmission data formats may be assigned to the transmission data format selection information. When handling more than two transmission data formats, store three configuration programs and transmission data format data corresponding to them in the configuration storage unit, and select and load them according to the transmission data format selection information. Also good.

The block diagram of the communication part in the protection relay apparatus of this embodiment. The block diagram of the transmission frame of this embodiment. The block diagram of a general protective relay device. The figure which shows an example of a structure of the protection relay apparatus using an optical communication line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Optical repeater 12 ... Transmission part 12a ... Configuration memory | storage part 12b ... FPGA
12c ... CPU
12d ... Address data bus 12e ... Function pin 100 ... Communication line F ... Transmission frame F1 ... Synchronization frame F2, F2 '... Control information F21 ... Separation bit F22 ... Transmission data format selection information Pa, Pb ... Configuration program Fa, Fb ... Transmission data format data MS ... Central device RS1-RS3 ... Terminal device Sa ... Communication unit Sb ... Relay unit α ... Near control information in transmission frame

Claims (2)

A repeater connected to the ring network;
A programmable logic device having a reconfiguration function for performing reconfiguration, a control unit, a transmission unit in which the programmable logic device and the control unit are connected by a transmission line,
And a central device including a communication unit that performs data communication using the repeater and a plurality of terminal devices including the communication unit,
A protection relay device that performs data communication via the ring network between the central device and the terminal device,
The transmission unit of the communication unit of the terminal device,
A configuration storage unit for storing a plurality of combinations of configuration data and transmission data format data for processing transmission data according to a specific transmission data format;
With
The control unit of the transmission unit of the communication unit of the terminal device,
Whether or not format selection information for selecting a transmission data format is detected is checked with respect to the programmable logic device, and when the format selection information is detected, reconfiguration of the programmable logic device of the terminal device is performed. Means for transmitting a reconfiguration execution instruction for instructing execution through the transmission line;
With
The programmable logic device of the transmission unit of the communication unit of the terminal device is
Means for receiving transmission data transmitted from the central device and received via a repeater of a communication unit of the terminal device, and detecting format selection information from the received transmission data;
The programmable logic device of the transmission unit of the communication unit of the terminal device that has received the reconfiguration execution instruction sends the configuration program and transmission data format data to the terminal device according to the format selection information included in the received transmission data. Means for performing reconfiguration using a pre-configured reconfiguration function in accordance with the loaded configuration program and transmission data format data, loaded from the configuration storage unit of the transmission unit of the communication unit,
A protective relay device comprising: A repeater connected to the ring network;
Configuration memory for storing multiple combinations of configuration data and transmission data format data for processing transmission data according to a specific transmission data format, programmable logic device having reconfiguration function for reconfiguration, control A transmission unit comprising a transmission line, the programmable logic device and the control unit connected by a transmission line,
And a central device including a communication unit that performs data communication using the repeater and a plurality of terminal devices including the communication unit,
A transmission data format switching method used for a protection relay device that performs data communication via the ring network between the central device and the terminal device,
The transmission data transmitted from the central device and received via the repeater of the communication unit of the terminal device is received by the programmable logic device of the transmission unit of the terminal device, and the format selection information for selecting the transmission data format is received. Detecting from transmission data;
The control unit of the transmission unit of the communication unit of the terminal device checks whether or not format selection information is detected with respect to the programmable logic device, and if the format selection information is detected, In contrast, a step of transmitting a reconfiguration execution instruction for instructing execution of reconfiguration via the transmission line,
The programmable logic device of the transmission unit of the communication unit of the terminal device that has received the reconfiguration execution instruction sends the configuration program and transmission data format data to the terminal device according to the format selection information included in the received transmission data. Loading from the configuration storage unit of the transmission unit of the communication unit, and performing reconfiguration using the reconfiguration function provided in advance according to the loaded configuration program and transmission data format data;
A transmission data format switching method characterized by comprising:

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