JP2010178058A - Protocol conversion device and remote monitoring/control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protocol conversion device for allowing a master station to see a plurality of slave stations to be one slave station, so as to attain coexistence of an analog switchboard and a digital switchboard concerning a remote monitoring/control system in a distributing substation, etc. <P>SOLUTION: A TC/DTC conversion device 7 includes: a CDT line control part 72 for performing communications with an analog remote monitoring/control apparatus (TC) with the analog switchboard connected thereto; a LAN line control part 76 for performing communications with a digital remote monitoring/control apparatus (DTC) with the digital switchboard connected thereto; and a main CPU 71 for mutually converting a CDT protocol for the communication with the analog remote monitoring/control apparatus (TC) and an IP protocol for the communication with the digital remote monitoring/control apparatus (DTC). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a protocol conversion device and a remote monitoring control system, and relates between an analog remote monitoring control device (TC) to which an analog switchboard is connected and a digital remote monitoring control device (DTC) to which a digital switchboard is connected. The present invention relates to a protocol conversion device that performs protocol conversion and a remote monitoring control system including the device.

  In distribution substations, etc., remote monitoring and control devices for analog (hereinafter referred to as TC (telecon) slave stations) have been used for information transmission related to monitoring and control of conventional analog switchboards. Digital switchboards have been used instead of switchboards. Since this digital switchboard has a communication interface different from that of a conventional analog switchboard, a digital remote monitoring control device (hereinafter referred to as a DTC (digital telecon) slave station) is used instead of an analog TC slave station.

  FIG. 28 is a diagram illustrating a basic configuration of a monitoring control system of a conventional distribution substation facility. FIG. 28A shows a system configuration including an analog switchboard and a TC slave station, and FIG. 28B shows a system configuration including a digital switchboard and a DTC slave station. In the figure, 100 is a control station, 101 is a control CPU, 102 is an ITC master station, 103 is a distribution substation, 104 is a TC (telecon) / TM (telemeter) slave station, 105a to 105c are analog switchboards, and 106 is a DTC. (Digital Telecon) Slave station, 107 is a hub, and 108a to 108c are digital switchboards. In this specification, the ITC master station 102 means a communication control device with a TC slave station or a DTC slave station in the control station 100 which is a supervisory control master station, and ITC is used as an abbreviation for intelligent telecon. Shall.

  The system configuration shown in FIGS. 28A and 28B is configured as an independent remote monitoring and control system, and one slave station (TC / TC) with respect to one master station (ITC master station 102). A TM slave station 104 or a DTC slave station 106) is communicably connected by a CDT (Cyclic Digital Transmission) system or an HDLC (High Level Data Link Control) system.

  In FIG. 28 (A), the TC / TM slave station 104 and the analog switchboards 105a to 105c are connected to each other by analog contacts. In FIG. 28B, the DTC slave station 106 and the digital switchboards 108a to 108c are connected via a hub 107 via a LAN (Local Area Network). Here, the digital switchboards 108 a to 108 c are communicably connected to the DTC slave station 106 by TCP (Transmission Control Protocol) / IP (Internet Protocol) protocol.

  FIGS. 29 and 30 are diagrams for explaining a case where an analog switchboard is partly updated to a digital switchboard. In an existing analog switchboard system, for example, when the analog switchboard 105 c is to be updated to the digital switchboard 108, the TC / TM slave station 104 does not have a communication interface (LAN), so the digital switchboard 108 is replaced with the TC / TM slave station 104. Cannot connect to and communicate with. Further, since the DTC slave station 106 does not have a communication interface corresponding to the existing analog switchboards 105 a and 105 b, the analog switchboards 105 a and 105 b cannot be connected to the DTC slave station 106.

  Therefore, as shown in FIG. 30, a DTC slave station 106 is required to connect the digital switchboard 108, and this DTC slave station 106 is connected to the ITC master station 102. In this case, when viewed from the ITC master station 102, two distribution stations 103, the TC / TM slave station 104 and the DTC slave station 106, are monitored with respect to one distribution substation 103. Monitoring control will be hindered. For this reason, there has been no method for updating a part of the analog switchboard to the digital switchboard so far, and all the analog switchboards including the usable analog switchboard are updated to the digital switchboard.

  In the above, in order to make two child stations appear virtually as one child station as seen from the ITC parent station 102, the TC / TM child station 104 is connected to the DTC child station 106 instead of the ITC parent station 102. It is possible. However, since the communication protocol on the switchboard (lower) side of the DTC slave station 106 is TCP / IP, and the communication protocol on the parent station (upper) side of the TC / TM slave station 104 is CDT, both communication protocols are used. Because of the difference, it is not possible to connect so that communication is possible.

  On the other hand, Patent Document 1 describes a technique for converting transmission information between a master station and a slave station in order to shift from a CDT or HDLC system, which is a transmission system of a conventional supervisory control system, to an IP system. ing. According to this, when the master station is updated to the IP transmission system, the transmission information converter is mounted in the master station, and transmission is performed with the slave station by the CDT system.

JP 2008-109417 A

  However, the technique described in Patent Document 1 is merely a protocol conversion between a master station and a slave station, and a TC / TM slave station to which an analog switchboard is connected and a digital switchboard are connected. It does not perform protocol conversion with the DTC slave station. That is, as described above, in order to make two slave stations virtually appear as one slave station as seen from the master station and to mix analog switchboards and digital switchboards, in the CDT / IP protocol conversion, A function for converting an address for identifying a monitoring (control, display, measurement) item, a function for automatically performing a selection output for a TC slave station or an analog switchboard in order to capture a selection display item from the TC slave station, etc. However, since the technique described in Patent Document 1 cannot realize such a function, it cannot be applied to a system in which analog switchboards and digital switchboards are mixed.

  The present invention has been made in view of the above circumstances, and in a remote monitoring and control system in a distribution substation or the like, a plurality of slave stations are shown as one slave station with respect to the master station, and an analog switchboard and It is an object of the present invention to provide a protocol conversion device and a remote monitoring and control system provided with the device to enable mixing of digital switchboards.

  In order to solve the above-mentioned problem, the first technical means is a protocol converter in which the first communication interface for communicating with the analog remote monitoring control apparatus to which the analog switchboard is connected and the digital switchboard are connected. A second communication interface for communicating with the digital remote monitoring control device; a first communication protocol for communicating with the analog remote monitoring control device; and a second communication protocol for communicating with the digital remote monitoring control device. And a protocol conversion means for mutually converting the communication protocol.

  According to a second technical means, in the first technical means, the first communication protocol is a CDT method, the second communication protocol is an IP method, and the protocol conversion unit is configured to change the IPT from the CDT method to the IP method. The communication protocol is converted to the system or from the IP system to the CDT system.

  In the second technical means, when the control information for controlling the analog switchboard is transmitted from the digital remote monitoring control device to the analog remote monitoring control device in the second technical means, the protocol conversion means Is characterized in that an address corresponding to the IP method for identifying a control item of the control information is converted into an address corresponding to the CDT method.

  According to a fourth technical means, in the third technical means, the protocol conversion means assigns an address corresponding to the IP method for designating a control method for each item of the control information to an address corresponding to the CDT method. It is characterized by converting to.

  The fifth technical means, in the second technical means, when transmitting display information for displaying the status information of the analog switchboard from the analog remote monitoring control device to the digital remote monitoring control device, The protocol conversion means converts an address corresponding to the CDT method for identifying a display item of the display information into an address corresponding to the IP method.

  In the fifth technical means, when the state change is detected in any one of the display items in the fifth technical means, the protocol conversion means uses the CDT method for identifying the display item in which the state change is detected. Is converted to an address corresponding to the IP system.

  In the second technical means, in the second technical means, when the measurement information of the analog switchboard is transmitted from the analog remote monitoring and control apparatus to the digital remote monitoring and control apparatus, the protocol conversion means includes the measurement An address corresponding to the CDT method for identifying a measurement item of information is converted into an address corresponding to the IP method.

  The eighth technical means, in any one of the first to seventh technical means, when the analog remote monitoring and control device is notified of the occurrence of a failure relating to the analog switchboard, the selection signal for the notification is sent to the analog The detailed fault information corresponding to the selection signal is acquired from the analog remote monitoring control device.

  A ninth technical means includes a monitoring control master station for performing centralized monitoring control, and a digital remote monitoring control apparatus to which a digital switchboard is connected, the monitoring control master station, the digital remote monitoring control apparatus, Is connected to the digital remote monitoring and control device via a protocol converter, the analog remote monitoring and control device to which an analog switchboard is connected, and the protocol converter is A first communication protocol for communicating with the analog remote monitoring and controlling apparatus and a second communication protocol for communicating with the digital remote monitoring and controlling apparatus are mutually converted. .

  According to a tenth technical means, in the ninth technical means, the first communication protocol is a CDT method, the second communication protocol is an IP method, and the protocol converter is configured to change the IPT from the CDT method to the IP method. The communication protocol is converted to the system or from the IP system to the CDT system.

  According to an eleventh technical means, in the ninth or tenth technical means, when the protocol conversion device is notified of the occurrence of a failure relating to the analog switchboard from the analog remote monitoring control device, a selection signal for the notification is sent. The analog remote monitoring and control apparatus transmits the detailed fault information corresponding to the selection signal to the protocol conversion apparatus, and the protocol conversion apparatus transmits the detailed fault information to the protocol. After the conversion, it is transmitted to the digital remote monitoring and control apparatus.

According to the present invention, in a remote monitoring and control system in a distribution substation or the like, a plurality of slave stations can be seen as one slave station with respect to the master station, and analog switchboards and digital switchboards can be mixed. A part of the switchboard can be easily updated to a digital switchboard.
Further, since existing devices such as DTC slave stations, TC slave stations, analog switchboards, and digital switchboards can be used as they are at the time of updating, a system can be constructed without cost.

It is a figure which shows the structural example of the remote monitoring control system which concerns on one Embodiment of this invention. It is a block diagram which shows the structural example of the TC / DTC conversion apparatus shown in FIG. It is a figure which shows an example of the CDT transmission format by the CDT system transmitted between a TC slave station and a TC / DTC converter. It is a figure which shows the structural example of the selection control word in the code structure of an information word. It is a figure which shows the structural example of the display word in the code structure of an information word, and a measurement word. It is a figure which shows an example of the ITC packet format by the IP system transmitted between a DTC slave station and a TC / DTC converter. It is a figure which shows an example of the control information management table stored in the memory in a TC / DTC conversion apparatus. It is a figure which shows an example of the display information management table stored in the memory in a TC / DTC conversion apparatus. It is a figure which shows an example of the measurement information management table stored in the memory in a TC / DTC conversion apparatus. It is a figure for demonstrating the CDT / IP conversion function with which the TC / DTC conversion apparatus of this invention is provided. It is a figure for demonstrating the automatic selection function between the conventional slave station side and the master station side. It is a figure for demonstrating an example of the automatic selection process performed based on the system configuration | structure shown in FIG. It is a figure for demonstrating the automatic selection function between the sub_station | mobile_unit side and a main | base station side in the case of providing a digital switchboard. It is a figure for demonstrating an example of the automatic selection process performed based on the system configuration | structure shown in FIG. It is a figure for demonstrating an example of the automatic selection process performed based on the system configuration | structure of this invention. It is a figure for demonstrating an example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure for demonstrating the other example of the remote monitoring control method by the remote monitoring control system of this invention. It is a figure which shows the basic composition of the monitoring control system of the conventional distribution substation equipment. It is a figure for demonstrating the case where it is going to update a part of analog switchboard to a digital switchboard. It is a figure for demonstrating the case where it is going to update a part of analog switchboard to a digital switchboard.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a protocol conversion device and a remote monitoring and control system including the device according to the invention will be described with reference to the accompanying drawings.

  FIG. 1 is a diagram illustrating a configuration example of a remote monitoring control system according to an embodiment of the present invention, in which 1 indicates a control station and 4 indicates a distribution substation. At a control station (corresponding to a supervisory control master station) 1, a control CPU 2 and an ITC (intelligent telecon) master station 3 are installed. In addition, the distribution substation 4 includes a TC (telecon) / TM (telemeter) slave station (hereinafter simply referred to as a TC slave station) 5 to which analog switchboards 6a to 6c are connected and connected in analog, and digital switchboards 10a to 10c. Are installed in a LAN via a hub 9 and a TC / DTC converter 7 corresponding to a protocol converter which is a main feature of the present invention. The TC slave station 5 corresponds to an analog remote monitoring control device, and the DTC slave station 8 corresponds to a digital remote monitoring control device.

  The DTC slave station 8 is connected so as to be communicable with the ITC master station by the HDLC system on the upper side, and is communicably connected to the digital switchboards 10a to 10c by the TCP / IP system (LAN). Further, the TC / DTC conversion device 7 is connected to the upper side so as to be communicable with the DTC slave station 8 by the TCP / IP system, and connected to the TC / DTC converter 7 so as to be communicable with the TC slave station 5 by the CDT method. In this example, the TC / DTC converter 7 is shown as being externally connected to the DTC slave station 8 via the hub 9, but may be configured to be built in the DTC slave station 8.

  FIG. 2 is a block diagram showing a configuration example of the TC / DTC converter 7 shown in FIG. In the figure, a TC / DTC conversion device 7 includes a main CPU 71 corresponding to a protocol conversion means, a CDT line control unit 72 corresponding to a first communication interface, and a TC slave station corresponding to a 1-line 2-route line. 5, a demodulator 73 that demodulates the signal from 5, a modulator 74 that modulates the signal to the TC slave station 5 corresponding to a line of 1 route and 2 routes, and a power supply unit 75 that supplies power to the TC / DTC converter 7. A LAN line control unit 76 corresponding to the second communication interface, an alarm output unit 77 for outputting various alarms, and a memory 78 for storing a control program, an address conversion table, and the like. The demodulator 73 and the modulator 74 constitute a modem unit.

  The main feature of the present invention is that, in a remote monitoring control system in a distribution substation or the like, a plurality of slave stations can be virtually seen as one slave station as seen from the master station, and analog switchboards and digital switchboards can be mixed. There is to do. As a configuration for this, the TC / DTC converter 7 includes a CDT line control unit 72 for communicating with the TC slave station 5 to which the analog switchboards 6a to 6c are connected, and a DTC to which the digital switchboards 10a to 10c are connected. The LAN line controller 76 for communicating with the slave station 8 and the first communication protocol for communicating with the TC slave station 5 and the second communication protocol for communicating with the DTC slave station 8 are mutually converted. The main CPU 71 is provided.

  In the case of this example, the first communication protocol is a CDT (cyclic digital transmission) system, and the second communication protocol is an IP (Internet protocol) system. The main CPU 71 converts the communication protocol from the CDT system to the IP system or from the IP system to the CDT system. Thereby, the ITC master station 3 and the TC slave station 5 can communicate with each other. However, since the TC slave station 5 is connected to the lower side of the DTC slave station 8, the ITC master station 3 has one It is only necessary to connect to the DTC slave station 8. With this configuration, in FIG. 1, for example, when the analog switchboard 6c is to be updated to a digital switchboard, only the analog switchboard 6c is updated to a digital switchboard with the existing analog switchboards 6a and 6b being utilized. can do.

  Here, in the remote monitoring control system of the present invention, a display for displaying the status information of the analog switchboard 6 as monitoring information transmitted between the DTC slave station 8 (ITC master station 3) and the TC slave station 5 Information, measurement information of the analog switchboard 6, and control information for controlling the analog switchboard 6 are included. These display information, measurement information, and control information are managed as “group / individual address” in the CDT transmission format (CDT system) of the TC slave station 5, and in the ITC packet format (IP system) of the DTC slave station 8, Managed as “data address”. These CDT transmission format and ITC packet format will be described with reference to FIGS.

  In FIG. 2, when transmitting control information for controlling the analog switchboard 6 from the DTC slave station 8 to the TC slave station 5, the main CPU 71 is data corresponding to the IP system for identifying the control items of the control information. The address is converted into a group / piece address corresponding to the CDT system. According to these group / individual addresses and data addresses, it is specified which item of which switchboard is to be controlled.

  In the above, the main CPU 71 converts a data address for designating a control method for each item of control information into a group / piece address corresponding to the CDT method. The control method here is classified into two behavior control and one behavior control as shown in FIG. Further, the flow of processing of normal two-behavior control and one-behavior control is as shown in FIG. 2 Control methods for behavior control include CL (Close) control, OP (Open control), and RS (Reset control), corresponding to the 3C2 code shown in FIG. Yes. These CL, OP, and RS are output after device selection.

  When transmitting display information for displaying the status information of the analog switchboard 6 from the TC slave station 5 to the DTC slave station 8, the main CPU 71 corresponds to the CDT method for identifying display items of the display information. The group / individual address is converted into a data address corresponding to the IP system. According to these group / individual addresses and data addresses, it is specified which item of which switchboard is displayed.

  In the above, when a state change is detected in any of the display items, the main CPU 71 uses a group / individual address corresponding to the CDT method for identifying the display item in which the state change is detected as a data address corresponding to the IP method. Convert to This state change (hereinafter often referred to as state change) can be detected by switching on / off predetermined bits included in each display item.

  When transmitting measurement information of the analog switchboard 6 from the TC slave station 5 to the DTC slave station 8, the main CPU 71 converts the IP address to a word address corresponding to the CDT method for identifying the measurement item of the measurement information. Convert to the corresponding data address. According to these word addresses and data addresses, measurement values are transmitted on demand or periodically for measurement items of each switchboard.

  FIG. 3 is a diagram illustrating an example of a CDT transmission format according to the CDT method transmitted between the TC slave station and the TC / DTC converter. As shown in FIG. 3A, according to the CDT transmission format, two frames of the first frame and the second frame are transmitted in one cycle. Also, as shown in FIG. 3B, one synchronization word and 1 to 31 information words are stored in the first frame, and one synchronization word and 33 to 63 are stored in the second frame. An information word is stored. As shown in FIG. 3C, one synchronization word is composed of 44 bits, and one information word is composed of 44 bits of 22 bits for initial transmission and 22 bits for continuous transmission.

In the following, based on FIGS. 4 and 5, a specific configuration example of the CDT transmission format will be described separately for each of control information, display information, and measurement information.
FIG. 4 is a diagram illustrating a configuration example of the selection control word in the code configuration of the information word. As shown in FIG. 4A, the selection control word (control information) is composed of 22 bits, 5C2 group selection code is assigned to bit numbers 9 to 13, and 5C2 selection codes are assigned to bit numbers 14 to 18. The 5C2 group selection code and the 5C2 selection code are specified in groups and pieces (that is, group / piece addresses) according to the 5C2 group / piece code conversion table of FIG. 4B. Control targets / control items are associated with the groups / units in advance, and when the group / unit addresses are specified, the control targets and control items can be specified.

  In addition, 3C2 control codes are assigned to bit numbers 19 to 21, and these 3C2 control codes are controlled according to the control method (CL (ON), OP (OFF), RS according to the 3C2 control code conversion table of FIG. (Return), non-control) is specified. This control method is managed corresponding to the control item.

  The TC / DTC conversion device 7 holds the 5C2 group / piece code conversion table of FIG. 4B and the 3C2 control code conversion table of FIG. For example, if the 5C2 group selection code is “00011”, it becomes “1 group”, and if the 5C2 group selection code is “00110”, it becomes “3”. That is, if the 5C2 group selection code is "00011" and the 5C2 selection code is "00110", the corresponding group / piece address is "1 group 3".

  FIG. 5 is a diagram illustrating a configuration example of the display word and the measurement word in the code configuration of the information word. FIG. 5A shows the configuration of the display word (display information), and FIG. 5B shows the configuration of the measurement word (measurement information). The management of the display information and measurement information by the group / individual address is based on the above-described management of the control information by the group / individual address, but the group / individual assignment method is different from the control information.

  5A, in the case of group / individual addresses in the display information, bit numbers 1 to 6 are assigned word addresses corresponding to “group” of group / individual addresses, and bit numbers 12 to 21 are assigned to group / individual addresses. A display item corresponding to the “address” of the individual address is assigned. This display item has a larger number of bits so that more items can be assigned than control items.

  In FIG. 5B, in the case of a word address in measurement information, a bit address is assigned to bit numbers 1 to 6, and a measurement item (measurement numerical value) is assigned to bit numbers 10 to 21. For example, in FIG. 9 to be described later, this measured numerical value is “LT1 secondary current”, which is a transmission numerical value “0 to 300”. The current value corresponding to this range is received from the lower side and Is output. If the current value is 150, for example, bit numbers 13, 15, and 17 in FIG. At this time, the bit numbers 2, 4, and 6 of the word address are turned on to become 21 words.

  FIG. 6 is a diagram illustrating an example of an ITC packet format based on the IP system transmitted between the DTC slave station and the TC / DTC conversion apparatus. This ITC packet includes a frame length, a transmission source device address, a type code (ID), a date / hour / minute / second, a data portion, a transmission destination device address, and the like. In the ITC packet, the group / individual address in the CDT transmission format described above is managed as a data address. Therefore, the TC / DTC converter 7 has a function of converting the group / individual address and the data address into each other.

  In FIG. 6, ITC header information and the byte size of the individual format part are stored in the frame length. The transmission source device address stores the address of the packet transmission source electric station (the distribution substation 3 in FIG. 1). The type code stores an ID for identifying the type of monitoring information described below. The packet generation time is stored in the date, hour, minute, and second. The data part stores the data address of the monitoring information. In the transmission destination device address, the address of the electric station (control station 1 in FIG. 1) of the packet transmission destination is stored.

  Here, as described above, the monitoring information related to the switchboard (analog, digital) is roughly divided into control information, display information, and measurement information. Further, the transmission direction of this monitoring information is such that the direction from the TC slave station 5 to the ITC master station 3 is the uplink direction, and the direction from the ITC master station 3 to the TC slave station 5 is the downlink direction. The control information is output from the master station to the slave station, and the control information is transmitted in both uplink and downlink directions in order to send a reply from the slave station to the master station. Since the display information is output from the slave station to the master station, it is transmitted in the upstream direction. Since the measurement information is output from the slave station to the master station, it is transmitted in the upstream direction.

  An ID is assigned to the monitoring information. For example, “01h” is assigned as the downlink ID of the initialization information transmission request, and “03h” is assigned as the uplink ID and downlink ID of the inter-system device diagnosis information. “10h” is assigned as the uplink ID of the display initialization information, and “14h” is assigned as the uplink ID of the display state change information. Further, “24h” is assigned as the downlink ID of the measurement information request, and “28h” is assigned as the uplink ID. The measurement information includes high-speed fixed period measurement information, fixed-time measurement information, and on-demand measurement information, and “20h”, “24h”, and “28h” are assigned as uplink IDs, respectively.

  In addition, the control information includes selection control information and response state change display information, and “30h” is assigned to both the up and down IDs of the selection control information, and the up state ID of the response state change display information. “31h” is assigned. Further, “39h” is assigned as the downlink ID of the one behavior control information, and “50h” is assigned as the downlink ID of the time synchronization information.

  In the memory 78 of the TC / DTC converter 7, a conversion table for mutually converting a group / individual address corresponding to the CDT method and a data address corresponding to the IP method is provided as control information, display information, and measurement information. Stored every time. With this conversion table, group / individual addresses and data addresses can be converted into each other.

  FIG. 7 is a diagram illustrating an example of a control information management table stored in a memory in the TC / DTC conversion apparatus. In the figure, the data address is an address in the IP system, and the conventional TCPOS (corresponding to the group / piece address) is an address in the CDT system. The item content is a control item of the control information. When the TC / DTC conversion apparatus 7 receives, for example, a packet having a data address of “01 group 00” and an ID of “30h” from the DTC slave station 8 as selection control information for downlink, the TC / DTC conversion device 7 Referring to the data, it is converted into a group / piece address of “1 group 9” in the CDT system, and this is transmitted to the TC slave station 5 as a selection signal. Each data address (group / piece address) is assigned with a “logical line number”, which allows the control panel to be controlled to be specified.

  Here, when an ID (30h) of “LT1 primary CB” having a data address of “01 group 04” is received, it is converted and output to “4 groups of 9 groups” of the CDT system, and after selection is performed, ID (30h) is again generated. ) CL (input) control is received, and this is converted and output to the CDT system. Thereby, the “LT1 primary CB (breaker)” can be entered (injected) and controlled. In the case of cut control, OP (cut) is received and converted to the CDT format and output. In the case of RS, the return control is used, and is used as a control code for returning the selection display after the selection display is captured. For example, in FIG. 22 described later, an output of “individual return control” (S138) after the selection display is taken in by automatic selection.

  FIG. 8 is a diagram illustrating an example of a display information management table stored in a memory in the TC / DTC conversion apparatus. Similar to FIG. 6, in the figure, the data address is an address in the IP system, and the conventional TCPOS (group / piece address) is an address in the CDT system. The item content is a display item of display information. In the TC / DTC converter 7, for example, a state change (state change) occurs in the item “LT1 43LR” in the analog switchboard, and the TC slave station 5 receives “9 groups, 1 unit” as a group / unit address of the CDT system. ”Is converted into a data address of“ 01 group 00 ”in the upper direction (upward direction), and“ 14h ”is generated as a corresponding packet ID to generate a DTC slave station. Send to 8 side. Each data address (group / piece address) is assigned with a “logical line number”, which allows the distribution board to be displayed to be specified. As the display information, for example, item contents shown in FIGS. 7 and 8 are displayed. Specifically, CB (breaker) on / off status display, OCH (short circuit), DG (ground fault), etc. are displayed as the failure content of the transmission line.

  FIG. 9 is a diagram illustrating an example of a measurement information management table stored in a memory in the TC / DTC conversion apparatus. In the figure, the data address is an address in the IP system, and the conventional TC word is an address in the CDT system. The item content is a measurement item of measurement information. For example, when the measurement information of the item “LT1 secondary current” of the analog switchboard is periodically transmitted from the TC slave station 5, the TC / DTC conversion device 7 sets “21” as the word address of the CDT system. receive. Then, the TC / DTC converter 7 converts this word address into a data address of “1” in the upper direction (upward direction), and “20h (high-speed constant period measurement information)” as the corresponding packet ID. Is transmitted to the DTC slave station 8 side. Note that each data address (word address) is assigned a “logical line number”, which allows the distribution board to be measured to be specified.

  FIG. 10 is a diagram for explaining the CDT / IP conversion function provided in the TC / DTC converter 7 of the present invention. 7 to 9, the TC / DTC conversion apparatus 7 performs protocol conversion between the ITC packet for the DTC slave station 8 and the CDT data for the TC slave station 5 to control each other. For information, display information, and measurement information, the data address of the DTC slave station 8 and the group / unit address (word address in the case of measurement information) of the TC slave station 5 can be mutually converted.

FIGS. 11-15 is a figure for demonstrating the automatic selection function with which the TC / DTC conversion apparatus 7 of this invention is provided.
FIG. 11 is a diagram for explaining a conventional automatic selection function between the slave station side and the master station side. In the case of the conventional TC slave station 5, since the number of display items is limited (maximum of about 320 items), detailed failure information is transmitted from the TC slave station 5 by a display selection signal from the control CPU 2 on the master station side. It was.

  FIG. 12 is a diagram for explaining an example of automatic selection processing executed based on the system configuration shown in FIG. First, when a failure such as a CB (breaker) trip occurs in the analog switchboard 6 (S1), the TC slave station 5 transmits CB disconnection information to the control CPU 2 (S2), and the control CPU 2 receives the CB disconnection information. Outputs a selection signal to the TC slave station 5 (S3). Then, the TC slave station 5 outputs a selected contact corresponding to the selection signal to the analog switchboard 6 (S4), and the analog switchboard 6 outputs detailed failure information corresponding to the selected contact to the TC slave station 5 (S5). . Then, the TC slave station 5 transmits selection display information corresponding to the detailed failure information to the control CPU 2 (S6).

  FIG. 13 is a diagram for explaining an automatic selection function between the slave station side and the master station side when the digital switchboard is provided. In the case of the DTC slave station 8, the number of display items is not particularly limited, and more than 1000 items can be transmitted. Therefore, the detailed failure information is transmitted from the DTC slave station 8 as a constant display. That is, in the case of a digital switchboard, the automatic selection process is not performed because detailed failure information can be taken in without performing the process of automatic selection in the analog switchboard.

  FIG. 14 is a diagram for explaining an example of automatic selection processing executed based on the system configuration shown in FIG. First, when a failure such as a CB (breaker) trip occurs in the digital switchboard 10 (S11), the DTC slave station 8 transmits the CB disconnection information to the control CPU 2 (S12). Information is output to the DTC slave station 8 (S13). Then, the DTC slave station 8 transmits constant display information corresponding to the detailed failure information to the control CPU 2 (S14).

  15, in the case of the remote monitoring control system according to the present invention, the automatic selection processing for the TC slave station 5 from the control CPU 2 on the master station side as shown in FIGS. 11 and 12 is not performed, so TC / DTC The conversion device 7 executes an automatic selection process in place of the master station. That is, when the TC slave station 5 is notified of the occurrence of the failure related to the analog switchboard 6 from the TC slave station 5, the TC / DTC converter 7 transmits a selection signal corresponding to this notification to the TC slave station 5, and detailed failure information corresponding to the selection signal (Selected display item) is acquired from the TC slave station 5. Then, the TC / DTC converter 7 converts the selected display item acquired from the TC slave station 5 into an IP data address to generate an ITC packet, and transmits this to the upper station side.

  As described above, according to the TC / DTC conversion device 7, the group / individual address for performing the CDT / IP protocol conversion and managing the monitoring information (control / display / measurement) of the analog switchboard is the IP data address. In order to capture the selection display item from the TC slave station and the function of converting to TC slave station, it is possible to realize a function of automatically performing selection output for the TC slave station and the analog switchboard. As a result, a plurality of slave stations can be seen as a single slave station with respect to the master station, and analog switchboards and digital switchboards can be mixed, so that part of the analog switchboard can be easily updated to digital switchboards. . Further, since existing devices such as DTC slave stations, TC slave stations, analog switchboards, and digital switchboards can be used as they are at the time of updating, a system can be constructed without cost.

  Hereinafter, the remote monitoring control method by the remote monitoring control system of the present invention will be described with reference to FIGS. 16 to 27, but between the TC / DTC conversion device 7 and the lower level (TC slave station 5) side. It is assumed that a CDT signal according to the CDT method is transmitted, and that an ITC packet according to the IP method is transmitted between the TC / DTC converter 7 and the higher-order (DTC slave station 8) side. Note that the HDC method is used for transmission between the DTC slave station 8 and the ITC master station 3. The conversion process between the CDT signal and the ITC packet is executed by the TC / DTC converter 7.

  FIG. 16 is a diagram for explaining an example of a remote monitoring control method by the remote monitoring control system of the present invention. In this example, a case where the DTC slave station 8 is activated will be described. First, the control CPU 2 exchanges inter-system device diagnosis information (ID = 03h) with the ITC master station 3 (S21). The TC / DTC converter 7 exchanges CDT signals with the TC slave station 5 (S22). When the DTC slave station 8 is activated, a line link between the DTC slave station 8 and the ITC master station 3 and a line link between the DTC slave station 8 and the TC / DTC converter 7 are established (S23). The station 3 exchanges inter-system device diagnosis information (ID = 03h) with the DTC slave station 8, and the DTC slave station 8 communicates with the TC / DTC converter 7 between the systems. Information (ID = 03h) is exchanged with each other.

  Next, the DTC slave station 8 notifies the system activation and transmits the device failure intensive change time information (ID = 08h) to the ITC parent station 3, and the ITC parent station 3 transmits the device failure intensive change time information. Is transmitted to the control CPU 2 (S25). Then, the ITC master station 3 transmits an initialization information transmission request (ID = 01h) to the DTC slave station 8, and the DTC slave station 8 transmits this initialization information transmission request to the TC / DTC converter 7 (S26). . The ITC master station 3 transmits time synchronization (ID = 50h) to the DTC slave station 8, and the DTC slave station 8 transmits this time synchronization to the TC / DTC converter 7 (S27). The time synchronization in S27 is a process for performing time synchronization with the time data of the first initial request message at the time of activation.

  Next, the control CPU 2 transmits an initialization information transmission request (ID = 01h) to the ITC master station 3 (S28). On the other hand, the ITC master station 3 receives the information from the DTC slave station 8. Since it has not arrived, no response is returned. Then, the DTC slave station 8 transmits the device failure aggregation initialization information (ID = 04h) to the ITC master station 3 (S29). Further, the TC / DTC conversion device 7 receives the initialization information transmission request from the DTC slave station 8, and transmits display initial information (ID = 10h) to the DTC slave station 8, and the DTC slave station 8 transmits the display initial information. Information is transmitted to the ITC master station 3 (S30).

  Next, when a predetermined time has elapsed after transmitting the initialization information transmission request in S28, the control CPU 2 transmits the initialization information transmission request (ID = 01h) to the ITC master station 3 as a retry request at the time-out. (S31) In response to this initialization information transmission request, the ITC master station 3 transmits the apparatus failure aggregation initialization information (ID = 04h) and the display initial information (ID = 10h) to the control CPU 2 (S32, S33). ). Then, the TC / DTC converter 7 transmits the high-speed fixed period measurement information (ID = 20h) to the DTC slave station 8, and the DTC slave station 8 transmits the high-speed fixed period measurement information to the ITC master station 3, and the ITC The master station 3 transmits the high-speed fixed period measurement information to the control CPU 2 (S34). Further, the TC / DTC converter 7 transmits the scheduled measurement information (ID = 24h) to the DTC slave station 8, the DTC slave station 8 transmits the scheduled measurement information to the ITC master station 3, and the ITC master station 3 The scheduled measurement information is transmitted to the control CPU 2 (S35).

  FIG. 17 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, a case where the TC / DTC converter 7 is activated will be described. First, inter-system device diagnosis information (ID = 03h) is transmitted between the control CPU 2 and the ITC master station 3, and at the same time, the inter-system device diagnosis information (ITC master station 3 and the DTC slave station 8). ID = 03h) are transmitted to each other (S41). Further, since the TC / DTC converter 7 is powered off, CDT signals are not exchanged between the TC / DTC converter 7 and the TC slave station 5 (S42). Accordingly, the DTC slave station 8 detects an abnormality in the Ethernet (registered trademark) LAN (S43).

  Next, when the power of the TC / DTC converter 7 is turned on (S44), the line disconnection is restored, and CDT signals are exchanged between the TC / DTC converter 7 and the TC slave station 5 ( S45). Then, a line link is established between the DCT slave station 8 and the TC / DTC conversion device 7 (S46), and inter-system device diagnosis information (ID = 03h) is mutually transmitted (S47). T1 and T2 in S47 indicate modes, and transmission of measurement information is permitted after transition to the T2 mode.

  Next, the DTC slave station 8 notifies the system activation and transmits the device failure intensive change time information (ID = 08h) to the ITC parent station 3, and the ITC parent station 3 transmits the device failure intensive change time information. Is transmitted to the control CPU 2 (S48). Then, the ITC master station 3 transmits an initialization information transmission request (ID = 01h) to the DTC slave station 8, and the DTC slave station 8 transmits this initialization information transmission request to the TC / DTC converter 7 (S49). . The ITC master station 3 transmits time synchronization (ID = 50h) to the DTC slave station 8, and the DTC slave station 8 transmits this time synchronization to the TC / DTC converter 7 (S50). The time synchronization in S50 is a process for performing time synchronization with the time data of the first initial request message at the time of activation.

  Next, the control CPU 2 transmits an initialization information transmission request (ID = 01h) to the ITC master station 3 (S51). On the other hand, the ITC master station 3 receives the information from the DTC slave station 8. Since it has not arrived, no response is returned. Then, the DTC slave station 8 transmits the device failure aggregation initialization information (ID = 04h) to the ITC master station 3 (S52). In response to the initialization information transmission request from the DTC slave station 8, the TC / DTC conversion device 7 transmits display initial information (ID = 10h) to the DTC slave station 8, and the DTC slave station 8 transmits the display initial information. The data is transmitted to the ITC master station 3 (S53). Note that the period from the establishment of the line link in S46 to the transmission of the display initial information in S53 is the initial information collection time, and this time is 15 seconds.

  Next, when a predetermined time has elapsed after transmitting the initialization information transmission request in S51, the control CPU 2 transmits the initialization information transmission request (ID = 01h) to the ITC master station 3 as a retry request at time-out. (S54) In response to this initialization information transmission request, the ITC master station 3 transmits device failure aggregation initialization information (ID = 04h) and display initial information (ID = 10h) to the control CPU 2 (S55, S56). ). Then, the TC / DTC converter 7 transmits the high-speed fixed period measurement information (ID = 20h) to the DTC slave station 8, and the DTC slave station 8 transmits the high-speed fixed period measurement information to the ITC master station 3, and the ITC The master station 3 transmits the high-speed fixed period measurement information to the control CPU 2 (S57). Further, the TC / DTC converter 7 transmits the scheduled measurement information (ID = 24h) to the DTC slave station 8, the DTC slave station 8 transmits the scheduled measurement information to the ITC master station 3, and the ITC master station 3 Then, the scheduled measurement information is transmitted to the control CPU 2 (S58).

  FIG. 18 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, a case where the TC slave station 5 is activated will be described. First, the inter-system device diagnosis information (ID = 03h) is transmitted between the control CPU 2 and the ITC master station 3, and the inter-system device diagnosis information is transmitted between the ITC master station 3 and the DTC slave station 8. The data are transmitted to each other (S61). The line link is disconnected between the DTC slave station 8 and the TC / DTC conversion device 7 (S62), whereby the DTC slave station 8 detects an abnormality in the Ethernet (registered trademark) LAN (S63). When the power is turned on (S64), the TC slave station 5 exchanges CDT signals between the TC / DTC converter 7 and the TC slave station 5 (S65). Then, the line link is restored and established between the DCT slave station 8 and the TC / DTC converter 7 (S66).

  Next, the DTC slave station 8 notifies the system activation and transmits the device failure intensive change time information (ID = 08h) to the ITC parent station 3, and the ITC parent station 3 transmits the device failure intensive change time information. Is transmitted to the control CPU 2 (S67). Then, the ITC master station 3 transmits an initialization information transmission request (ID = 01h) to the DTC slave station 8, and the DTC slave station 8 transmits this initialization information transmission request to the TC / DTC converter 7 (S68). . The ITC master station 3 transmits time synchronization (ID = 50h) to the DTC slave station 8, and the DTC slave station 8 transmits this time synchronization to the TC / DTC converter 7 (S69). The time synchronization in S69 is a process for performing time synchronization with the time data of the first initial request message at the time of activation.

  Next, the control CPU 2 transmits an initialization information transmission request (ID = 01h) to the ITC master station 3 (S70). On the other hand, the ITC master station 3 receives the information from the DTC slave station 8. Since it has not arrived, no response is returned. Then, the DTC slave station 8 transmits the device failure aggregation initialization information (ID = 04h) to the ITC master station 3 (S71). The TC / DTC conversion device 7 receives the initialization information transmission request from the DTC slave station 8 and transmits the display initial information (ID = 10h) to the DTC slave station 8, and the DTC slave station 8 transmits the display initial information to the ITC. The data is transmitted to the master station 3 (S72). The period from the establishment of the line link in S66 to the transmission of the display initial information in S72 is the initial information collection time, and this time is 15 seconds.

  Next, when a predetermined time has elapsed after transmitting the initialization information transmission request in S70, the control CPU 2 transmits the initialization information transmission request (ID = 01h) to the ITC master station 3 as a retry request at time-out. (S73) In response to the initialization information transmission request, the ITC master station 3 transmits the device failure aggregation initialization information (ID = 04h) and the display initial information (ID = 10h) to the control CPU 2 (S74, S75). ). Then, the TC / DTC converter 7 transmits the high-speed fixed period measurement information (ID = 20h) to the DTC slave station 8, and the DTC slave station 8 transmits the high-speed fixed period measurement information to the ITC master station 3, and the ITC The master station 3 transmits the high-speed fixed period measurement information to the control CPU 2 (S76). Further, the TC / DTC converter 7 transmits the scheduled measurement information (ID = 24h) to the DTC slave station 8, the DTC slave station 8 transmits the scheduled measurement information to the ITC master station 3, and the ITC master station 3 The scheduled measurement information is transmitted to the control CPU 2 (S77).

  FIG. 19 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, processing for transmitting monitoring (display / measurement) information is described. First, a CDT signal is transmitted between the TC / DTC converter 7 and the TC slave station 5 (S81). When a state change (state change) occurs in any of the display items, the TC slave station 5 transmits a CDT signal indicating the display state change to the TC / DTC converter 7 (S82).

  When the TC / DTC conversion device 7 detects a change in state based on the CDT signal from the TC slave station 5, the TC / DTC conversion device 7 converts the display state change information corresponding to the CDT signal into an ITC packet. ID = 14h) is transmitted to the DTC slave station 8. The display state change information is sequentially transmitted from the DTC slave station 8 to the ITC master station 3 and from the ITC master station 3 to the control CPU 2 (S83).

  Next, the control CPU 2 transmits an accident analysis information request (ID = 19h) to the ITC master station 3 in response to the accident analysis information request, and the ITC master station 3 sends the accident analysis information request. The data is transmitted to the DTC slave station 8 (S84). The DTC slave station 8 receives the accident analysis information request and transmits the accident analysis information (ID = 19h) to the ITC master station 3. The ITC master station 3 transmits the accident analysis information to the control CPU 2 (S85).

  Next, the TC slave station 5 transmits a CDT signal indicating measurement information for transmitting measurement items to the TC / DTC converter 7 (S86), and the TC / DTC converter 7 transmits one address per cycle. Update measurement information for minutes. Then, the TC / DTC conversion device 7 converts the high-speed fixed period measurement information corresponding to the CDT signal into an ITC packet, and transmits the ITC packetized high-speed fixed period measurement information (ID = 20h) to the DTC slave station 8. The high-speed fixed period measurement information is sequentially transmitted from the DTC slave station 8 to the ITC master station 3 and from the ITC master station 3 to the control CPU 2 (S87). The TC / DTC conversion device 7 transmits the ITC packetized scheduled measurement information (ID = 24h) to the DTC slave station 8, and the scheduled measurement information is transmitted from the DTC slave station 8 to the ITC master station 3 and the ITC master station. 3 is sequentially transmitted to the control CPU 2 (S88). The transmission cycle of the high-speed fixed cycle measurement information from the TC / DTC converter 7 is 3 seconds (fixed), and the transmission cycle of the fixed time measurement information is 1 minute or 5 minutes.

  Next, the control CPU 2 transmits selection control information (ID = 30h) to the ITC master station 3, and this selection control information is converted from the ITC master station 3 to the DTC slave station 8, and from the DTC slave station 8 to the TC / DTC conversion. The data is sequentially transmitted to the device 7 (S89). Then, the TC / DTC conversion device 7 converts the selection control information into the CDT format, and outputs the CDT-formatted selection signal (5C2: see FIG. 4B) to the TC slave station 5 (S90). The station 5 transmits the selected measurement information corresponding to the selection signal to the TC / DTC converter 7 (S91). In the TC / DTC converter 7, the corresponding measurement item is updated.

  Next, the control CPU 2 transmits the scheduled measurement information request (ID = 24h) and the requested measurement information request (ID = 28h) to the ITC master station 3, and these scheduled measurement information request and requested measurement information. The request is sequentially transmitted from the ITTC master station 3 to the DTC slave station 8, and from the DTC slave station 8 to the TC / DTC converter 7 (S92). Then, the TC / DTC conversion device 7 transmits the scheduled measurement information (ID = 24h) and the requested measurement information (ID = 28h) to the DTC slave station 8, and these scheduled measurement information and requested measurement information Are sequentially transmitted from the DTC slave station 8 to the ITC master station 3, and from the ITC master station 3 to the control CPU 2 (S93).

  FIG. 20 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, processing for transmitting control information (normal) will be described. First, a CDT signal is transmitted between the TC / DTC converter 7 and the TC slave station 5 (S101). When a request for one behavior control is made, the control CPU 2 transmits one behavior control information (ID = 39h) to the ITC master station 3, and this one behavior control information is transmitted from the ITC master station 3 to the DTC slave station 8, The data is sequentially transmitted from the DTC slave station 8 to the TC / DTC converter 7 (S102). The TC / DTC converter 7 outputs a CDT signal indicating one behavior control to the TC slave station 5 (S103), and the TC slave station 5 performs control output.

  Next, when detecting a response change in any of the display items, the TC slave station 5 transmits a CDT signal indicating the display change to the TC / DTC converter 7 (S104). When the TC / DTC converter 7 detects the response state change based on the CDT signal from the TC slave station 5, the TC / DTC conversion device 7 transmits display state change information (ID = 14h) to the DTC slave station 8, and this display state change information is: The data is sequentially transmitted from the DTC slave station 8 to the ITC master station 3 and from the ITC master station 3 to the control CPU 2 (S105). In addition, the control result with respect to one behavior control shall be performed by display state change information.

  Next, when a request for two-behavior control is made, the control CPU 2 transmits selection control (selection) information (ID = 30h) to the ITC master station 3, and this selection control information is transmitted from the ITC master station 3 to the DTC. The data is sequentially transmitted from the slave station 8 and the DTC slave station 8 to the TC / DTC converter 7 (S106). The TC / DTC converter 7 outputs the selection signal (5C2) in the CDT format to the TC slave station 5 (S107), and the TC slave station 5 turns on the selection completion output to display the CDT signal indicating the display state change. Is transmitted to the TC / DTC converter 7 (S108).

  When the TC / DTC converter 7 detects a change in state based on the CDT signal from the TC slave station 5, it transmits selection control return (selection completion) information (ID = 30h) to the DTC slave station 8, and returns this selection control return. Information is sequentially transmitted from the DTC slave station 8 to the ITC master station 3, and from the ITC master station 3 to the control CPU 2 (S109).

  Next, when control execution is requested, the control CPU 2 transmits selection control (control execution) information (ID = 30h) to the ITC master station 3, and the selection control information is transmitted from the ITC master station 3 to the DTC child. The data is sequentially transmitted from the station 8 and the DTC slave station 8 to the TC / DTC converter 7 (S110). The TC / DTC converter 7 outputs a CDT-formatted control signal (3C2: see FIG. 4C) to the TC slave station 5 for 1 second (S111), and the TC slave station 5 outputs the control signal for 1 second. To do.

  When the TC slave station 5 detects a response change in any of the display items, the TC slave station 5 transmits a CDT signal indicating the display change to the TC / DTC converter 7 (S112). When the TC / DTC conversion device 7 detects the response change based on the CDT signal from the TC slave station 5, it transmits the response change display information (ID = 31h) to the DTC slave station 8, and this response change display information. Are sequentially transmitted from the DTC slave station 8 to the ITC master station 3, and from the ITC master station 3 to the control CPU 2 (S113). If no response change is detected within 15 seconds from the output of the control signal (3C2), the TC slave station 5 returns the response with “non-response”. The control result for the two-behavior control is assumed to be the response state change display information.

  Next, when a selection cancellation request is made, the control CPU 2 transmits selection control (selection cancellation) information (ID = 30h) to the ITC master station 3, and this selection control information is transmitted from the ITC master station 3 to the DTC. The data is sequentially transmitted from the slave station 8 and the DTC slave station 8 to the TC / DTC converter 7 (S114). The TC / DTC converter 7 outputs the CDT-formatted non-selection signal (5C2) to the TC slave station 5 (S115), and the TC slave station 5 turns off the selection completion output to display the CDT indicating the display state change. The signal is transmitted to the TC / DTC converter 7 (S116).

  When the TC / DTC converter 7 detects a change in state based on the CDT signal from the TC slave station 5, the TC / DTC converter 7 transmits selection control (selection return) information (ID = 30h) to the DTC slave station 8, and this selection control. Information is sequentially transmitted from the DTC slave station 8 to the ITC master station 3, and from the ITC master station 3 to the control CPU 2 (S117).

  FIG. 21 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, processing for transmitting diagnostic information is described. First, a CDT signal is transmitted between the TC / DTC converter 7 and the TC slave station 5 (S120). The ITC master station 3 transmits an inter-system information diagnosis information request (ID = 02h) to the DTC slave station 8 (S121), and the DTC slave station 8 receives the request and receives the device failure aggregation information diagnosis information (ID = 06h) and inter-display system information diagnosis information (ID = 12h) are transmitted to the ITC master station 3 (S122, S123).

  Next, the control CPU 2 transmits an inter-system information diagnostic information request (ID = 02h) to the ITC master station 3 (S124), and the ITC master station 3 receives the request and receives the device failure aggregation information diagnostic information ( ID = 06h) and inter-display system information diagnosis information (ID = 12h) are transmitted to the control CPU 2 (S125, S126).

  Then, between the control CPU 2 and the ITC master station 3, between the ITC master station 3 and the DTC slave station 8, and between the DTC slave station 8 and the TC / DTC converter 7, the inter-system device diagnosis information (ID = 03h) are transmitted to each other (S127).

  FIG. 22 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, the automatic selection process will be described. First, a CDT signal is transmitted between the TC / DTC converter 7 and the TC slave station 5 (S131).

  When the TC slave station 5 detects a state change (state change) of the automatic selection trigger setting position that triggers automatic selection failure capture such as a transmission line failure, the TC slave station 5 converts the CDT signal indicating the display state change into a TC / DTC converter. 7 (S132). When the TC / DTC conversion device 7 detects a change in state based on the CDT signal, the TC / DTC converter 7 transmits ITC packetized display state change information (ID = 14h) to the DTC slave station 8, and this display state change information is stored in the DTC child. The data is sequentially transmitted from the station 8 to the ITC master station 3 and from the ITC master station 3 to the control CPU 2 (S133).

  Then, after detecting the state change, the TC / DTC converter 7 transmits the CDT formatted selection signal (5C2) to the TC slave station 5 (S134), and when the TC slave station 5 turns on the selection completion output, A CDT signal indicating a display state change is transmitted from the TC slave station 5 to the TC / DTC converter 7 (S135).

  Next, when the TC slave station 5 detects the selection display state change in any of the display items, the TC slave station 5 transmits a CDTC signal indicating the selection display state change to the TC / DTC conversion device 7 (S136), and the TC / DTC conversion device. 7 detects the selected display state change based on the CDT signal, transmits ITC packetized display state change information (ID = 14h) to the DTC slave station 8, and this display state change information is transmitted from the DTC slave station 8 to the ITC. The data is sequentially transmitted from the master station 3 and the ITC master station 3 to the control CPU 2 (S137).

  Next, when the individual return control is requested, the TC / DTC converter 7 outputs a control signal (3C2) in the CDT format to the TC slave station 5 (S138). This individual return control is automatically output after n seconds for automatic selection processing. The TC slave station 5 performs control output.

  Next, when the TC slave station 5 detects the selection display state change in any of the display items, the TC slave station 5 transmits a CDTC signal indicating the selection display state change to the TC / DTC conversion device 7 (S139), and the TC / DTC conversion device. 7 detects the selected display state change based on the CDT signal, transmits ITC packetized display state change information (ID = 14h) to the DTC slave station 8, and this display state change information is transmitted from the DTC slave station 8 to the ITC. The data is sequentially transmitted from the master station 3 and the ITC master station 3 to the control CPU 2 (S140).

  Next, when the selection cancellation output is requested, the TC / DTC conversion device 7 outputs the CDT-formatted non-selection signal (5C2) to the TC slave station 5 (S141). This deselection is automatically output after n + 5 seconds for automatic selection processing. When the selection completion output is turned off, the TC slave station 5 transmits a CDT signal indicating a display change to the TC / DTC converter 7 (S142), and the TC / DTC converter 7 changes the status based on the CDT signal. When the change is detected, the display state change information (ID = 14h) converted into an ITC packet is transmitted to the DTC slave station 8, and this display state change information is controlled from the DTC slave station 8 to the ITC master station 3 and from the ITC master station 3. The data are sequentially transmitted to the CPU 2 (S143).

  Next, when detecting the state change of the automatic selection trigger setting position, the TC slave station 5 transmits a CDT signal indicating the display state change to the TC / DTC conversion device 7 (S144, S145). In the TC / DTC conversion device 7, the number of stored state change of the automatic selection trigger setting position is set to n, and the state change exceeding n is discarded and the automatic selection process is controlled not to be performed.

  FIG. 23 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, processing when there is a selection interruption from the control CPU 2 during automatic selection in the TC / DTC conversion device 7 will be described. First, a CDT signal is transmitted between the TC / DTC converter 7 and the TC slave station 5 (S151).

  When detecting the state change of the automatic selection trigger setting position, the TC slave station 5 transmits a CDT signal indicating the display state change to the TC / DTC conversion device 7 (S152). When the TC / DTC conversion device 7 detects a change in state based on the CDT signal, in this example, after 5 seconds, the TC / DTC conversion device 7 transmits the selection signal (5C2) in the CDT format to the TC slave station 5 (S153). When the selection completion output is turned on, the TC slave station 5 transmits a CDT signal indicating a display change to the TC / DTC converter 7 (S154), and the TC / DTC converter 7 detects the change based on the CDT signal. To do.

  Next, when the TC slave station 5 detects the selection display state change in any of the display items, the TC slave station 5 transmits a CDTC signal indicating the selection display state change to the TC / DTC conversion device 7 (S155), and the TC / DTC conversion device. When the state change is detected based on this CDT signal, the display state change information (ID = 14h) converted into an ITC packet is transmitted to the DTC slave station 8, and this display state change information is transmitted from the DTC slave station 8 to the ITC master station. The data is sequentially transmitted from the station 3 and the ITC master station 3 to the control CPU 2 (S156).

  Next, the control CPU 2 transmits the ITC packetized selection control (control execution) information (ID = 30h) to the ITC master station 3 in response to the selection request, and this selection control information is transmitted from the ITC master station 3. The data is sequentially transmitted from the DTC slave station 8 and the DTC slave station 8 to the TC / DTC converter 7 (S157). The TC / DTC conversion device 7 outputs the CDT-formatted unselected signal (5C2) to the TC slave station 5 (S158). When the TC slave station 5 turns off the selection completion output, the CDT indicating the display state change is generated. The signal is transmitted to the TC / DTC converter 7 (S159). The TC / DTC converter 7 detects a change in state and confirms that the selection has been canceled.

  Next, the TC / DTC conversion device 7 detects a change in state and confirms that the selection has been canceled, and then receives the selection control in S157 and sends the selection signal (5C2) in the CDT format to the TC slave station. When the selection completion output is turned on, the TC slave station 5 transmits a CDT signal indicating a display state change to the TC / DTC converter 7 (S161). When detecting a change in state based on the CDT signal, the TC / DTC conversion device 7 transmits selection control return (selection completion) information (ID = 30h) into an ITC packet to the DTC slave station 8, and this selection control return information is The DTC slave station 8 sequentially transmits the data to the ITC master station 3 and the ITC master station 3 to the control CPU 2 (S162).

  Next, the control CPU 2 transmits the ITC packetized selection control (control execution) information (ID = 30h) to the ITC master station 3 in response to the control execution request, and this selection control information is stored in the ITC master station. 3 is sequentially transmitted to the DTC slave station 8 and from the DTC slave station 8 to the TC / DTC converter 7 (S163). Upon receiving this selection control information, the TC / DTC conversion device 7 outputs a control signal (3C2) in the CDT format to the TC slave station 5 (S164), and the TC slave station 5 performs control output.

  Next, when the TC slave station 5 detects a response change in any of the display items, the TC slave station 5 transmits a CDT signal indicating the display change to the TC / DTC conversion device 7 (S165), and the TC / DTC conversion device 7 When the status change is detected based on the CDT signal, the ITC packetized response status change display information (ID = 31h) is transmitted to the DTC slave station 8, and the response status change display information is transmitted from the DTC slave station 8 to the ITC master station. 3. Sequentially transmitted from the ITC master station 3 to the control CPU 2 (S166).

  Next, when a selection cancellation request is made, the control CPU 2 transmits selection control (selection cancellation) information (ID = 30h) to the ITC master station 3, and this selection control information is transmitted from the ITC master station 3 to the DTC. The data is sequentially transmitted from the slave station 8 and the DTC slave station 8 to the TC / DTC converter 7 (S167). The TC / DTC converter 7 outputs the selection signal (5C2) in the CDT format to the TC slave station 5 (S168), and the TC slave station 5 turns off the selection completion output to display the CDT signal indicating the display state change. Is transmitted to the TC / DTC converter 7 (S169).

  When the TC / DTC converter 7 detects a change in state based on the CDT signal from the TC slave station 5, the TC / DTC converter 7 transmits selection control (selection return) information (ID = 30h) to the DTC slave station 8, and this selection control information is The DTC slave station 8 sequentially transmits the data to the ITC master station 3 and the ITC master station 3 to the control CPU 2 (S170). Thereafter, the automatic selection process is retried, and when the TC / DTC conversion device 7 detects a change in state based on the CDT signal, for example, after 5 seconds, the TC / DTC conversion device 7 transmits a selection signal (5C2) that has been CDT formatted to the TC slave station 5 (S171). ). When the selection completion output is turned on, the TC slave station 5 transmits a CDT signal indicating a display change to the TC / DTC converter 7 (S172), and the TC / DTC converter 7 detects the change based on the CDT signal. To do.

  Next, when the TC slave station 5 detects the selection display state change in any of the display items, the TC slave station 5 transmits a CDTC signal indicating the selection display state change to the TC / DTC conversion device 7 (S173), and the TC / DTC conversion device. 7 detects the status change based on the CDT signal, transmits the ITC packetized display status change information (ID = 14h) to the DTC slave station 8, and the display status change information is transmitted from the DTC slave station 8 to the ITC master station. 3. Sequentially transmitted from the ITC master station 3 to the control CPU 2 (S174).

  Thus, when there is a selection request from the control CPU 2 during automatic selection by the TC / DTC conversion device 7, the request from the control CPU 2 is prioritized, and after the automatic selection is canceled, the selection request processing from the control CPU 2 ( It is controlled to execute a selection display capture sequence).

  FIG. 24 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, the selection display process will be described. First, a CDT signal is transmitted between the TC / DTC converter 7 and the TC slave station 5 (S181).

  Next, when detecting the state change (state change) of the automatic selection trigger setting position, the TC slave station 5 transmits a CDT signal indicating the display state change to the TC / DTC conversion device 7 (S182). When the TC / DTC converter 7 detects a change in state based on the CDT signal, the TC / DTC converter 7 transmits the selection signal (5C2) in the CDT format to the TC slave station 5 (S183), and the TC slave station 5 turns on the selection completion output. Then, the CDT signal indicating the display state change is transmitted from the TC slave station 5 to the TC / DTC converter 7 (S184).

  Next, when the TC slave station 5 detects the selection display state change in any of the display items, the TC slave station 5 transmits a CDTC signal indicating the selection display state change to the TC / DTC conversion device 7 (S185), and the TC / DTC conversion device. 7 detects the status change based on the CDT signal, transmits the ITC packetized display status change information (ID = 14h) to the DTC slave station 8, and the display status change information is transmitted from the DTC slave station 8 to the ITC master station. 3. Sequentially transmitted from the ITC master station 3 to the control CPU 2 (S186).

  Next, when the individual return control is requested, the TC / DTC conversion device 7 outputs the CDT formatted control signal (3C2) to the TC slave station 5 (S187). The TC slave station 5 performs control output.

  Next, when the TC slave station 5 detects the selected display state change in any of the display items, the TC slave station 5 transmits a CDT signal indicating the display state change to the TC / DTC conversion device 7 (S188), and the TC / DTC conversion device 7 When the state change is detected based on the CDT signal, ITC packetized display state change information (ID = 14h) is transmitted to the DTC slave station 8, and this display state change information is transmitted from the DTC slave station 8 to the ITC master station 3. Are sequentially transmitted from the ITC master station 3 to the control CPU 2 (S189).

  Next, when the selection cancellation output is requested, the TC / DTC conversion device 7 outputs the CDT formatted non-selection signal (5C2) to the TC slave station 5 (S190). Then, when the selection completion output is turned off, the TC slave station 5 transmits a CDT signal indicating a display state change to the TC / DTC conversion device 7 (S191). When the TC / DTC conversion device 7 detects a change in state based on the CDT signal, the TC / DTC conversion device 7 transmits display state change information (ID = 14h) converted into an ITC packet to the DTC slave station 8. The data is sequentially transmitted from the slave station 8 to the ITC master station 3 and from the ITC master station 3 to the control CPU 2 (S192).

  Next, when detecting the state change of the automatic selection trigger setting position, the TC slave station 5 transmits a CDT signal indicating the display state change to the TC / DTC conversion device 7 (S193, S194). In the TC / DTC conversion device 7, the number of stored state change of the automatic selection trigger setting position is set to n, and the state change exceeding n is discarded and the automatic selection process is controlled not to be performed.

  FIG. 25 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, the processing when the CDT line is abnormal will be described. A control traffic jam occurs between the TC / DTC converter 7 and the TC slave station 5 due to a disconnection of the control line, and CDT signals are not transmitted to each other (S201). In this case, the TC / DTC conversion device 7 transmits the ITC packetized display state change information (ID = 14h) to the DTC slave station 8, and the display state change information is transmitted from the DTC slave station 8 to the ITC master station 3, The information is sequentially transmitted from the ITC master station 3 to the control CPU 2 (S202). After that, when the control traffic is restored and the CDT signal is transmitted between the TC / DTC conversion device 7 and the TC slave station 5 (S203), the TC / DTC conversion device 7 converts it into an ITC packet. The display state change information (ID = 14h) is transmitted to the DTC slave station 8, and this display state change information is sequentially transmitted from the DTC slave station 8 to the ITC master station 3 and from the ITC master station 3 to the control CPU 2 ( S204).

  FIG. 26 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, another process when the CDT line is abnormal will be described. A display traffic jam occurs between the TC / DTC converter 7 and the TC slave station 5 due to a disconnection of the display line, and CDT signals are not transmitted to each other (S211). In this case, the TC / DTC conversion device 7 transmits the ITC packetized display state change information (ID = 14h) to the DTC slave station 8, and the display state change information is transmitted from the DTC slave station 8 to the ITC master station 3, The information is sequentially transmitted from the ITC master station 3 to the control CPU 2 (S212).

  Thereafter, when the TC / DTC converter 7 between the DTC slave station 8 and the TC / DTC converter 7 disconnects the line link itself (S213), the DTC slave station 8 detects an abnormality in the Ethernet (registered trademark) LAN. . Since the line link is disconnected, the inter-system device diagnosis information (ID = 03h) cannot be transmitted between the DTC slave station 8 and the TC / DTC conversion device 7 (S214). In this case, the DTC slave station 8 transmits the ITC packetized device failure intensive time change information (ID = 08h) to the ITC parent station 3, and the ITC parent station 3 controls the device failure intensive time change information. The data is transmitted to the CPU 2 (S215). Then, the DTC slave station 8 transmits the high-speed fixed cycle measurement information (ID = 20h) and the fixed-time measurement information (ID = 24h) to the ITC master station 3, and the ITC master station 3 transmits the high-speed fixed cycle measurement information. And the scheduled measurement information are transmitted to the control CPU 2 (S216, S217). As these pieces of measurement information, the previous value data held with the flag inverted is output.

  Thereafter, when the display traffic is restored and the CDT signal is transmitted between the TC / DTC converter 7 and the TC slave station 5 (S218), the DTC slave station 8 and the TC / DTC converter 7 Is established (S219), and the process proceeds to TC activation processing.

  The DTC slave station 8 notifies the abnormal recovery and transmits the device failure intensive change time information (ID = 08h) to the ITC master station 3, and the ITC master station 3 uses the device failure intensive change time information for control. The data is transmitted to the CPU 2 (S220). Then, the ITC master station 3 transmits an initialization information transmission request (ID = 01h) to the DTC slave station 8, and the DTC slave station 8 transmits this initialization information transmission request to the TC / DTC converter 7 (S221). .

  Next, the DTC slave station 8 transmits device failure aggregation initialization information (ID = 04h) to the ITC master station 3 (S222). The TC / DTC conversion device 7 receives the initialization information transmission request from the DTC slave station 8 and transmits the display initial information (ID = 10h) to the DTC slave station 8, and the DTC slave station 8 transmits the display initial information to the ITC. The data is transmitted to the master station 3 (S223). In the TC / DTC converter 7, the item of display line abnormality is assumed to be in the return state.

  Next, the TC / DTC conversion device 7 transmits the ITC packetized display state change information (ID = 14h) to the DTC slave station 8, and this display state change information is transmitted from the DTC slave station 8 to the ITC master station 3, The information is sequentially transmitted from the ITC master station 3 to the control CPU 2 (S224).

  FIG. 27 is a diagram for explaining another example of the remote monitoring control method by the remote monitoring control system of the present invention. In this example, another process when the CDT line is abnormal will be described. A CDT signal is transmitted between the TC / DTC converter 7 and the TC slave station 5 (S231). Here, it is assumed that there is an abnormality in the LAN cable between the DTC slave station 8 and the TC / DTC converter 7 or an abnormality in the hub 9. Due to this abnormality, the line link between the DTC slave station 8 and the TC / DTC converter 7 is disconnected (S232), and the DTC slave station 8 detects an abnormality in the Ethernet (registered trademark) LAN. Since the line link is disconnected, the inter-system device diagnosis information (ID = 03h) cannot be transmitted between the DTC slave station 8 and the TC / DTC conversion device 7 (S233).

  In this case, the DTC slave station 8 transmits ITC packetized device failure intensive time change information (ID = 08h) to the ITC parent station 3, and the ITC parent station 3 transmits the device failure intensive time change information. The data is transmitted to the control CPU 2 (S234). Then, the DTC slave station 8 transmits the high-speed fixed cycle measurement information (ID = 20h) and the fixed-time measurement information (ID = 24h) to the ITC master station 3, and the ITC master station 3 transmits the high-speed fixed cycle measurement information. And the scheduled measurement information are transmitted to the control CPU 2 (S235, S236). As these pieces of measurement information, the previous value data held with the flag inverted is output.

  Thereafter, when the abnormality of the LAN cable or the hub 9 is resolved and a line link is established between the DTC slave station 8 and the TC / DTC converter 7 (S237), the process proceeds to TC / DTC activation processing.

  Between the DTC slave station 8 and the TC / DTC conversion device 7, inter-system device diagnosis information (ID = 03h) is transmitted mutually (S238). Then, the DTC slave station 8 transmits the device failure intensive change time information (ID = 08h) to the ITC master station 3, and the ITC master station 3 transmits the device failure intensive change time information to the control CPU 2. (S239). Then, the ITC master station 3 transmits an initialization information transmission request (ID = 01h) to the DTC slave station 8, and the DTC slave station 8 transmits this initialization information transmission request to the TC / DTC converter 7 (S240). . The ITC master station 3 transmits time synchronization (ID = 50h) to the DTC slave station 8, and the DTC slave station 8 transmits this time synchronization to the TC / DTC converter 7 (S241).

  Next, the control CPU 2 transmits an initialization information transmission request (ID = 01h) to the ITC master station 3 (S242). The DTC slave station 8 transmits the device failure aggregation initialization information (ID = 04h) to the ITC master station 3 (S243). Further, the TC / DTC conversion device 7 receives the initialization information transmission request from the DTC slave station 8, and transmits display initial information (ID = 10h) to the DTC slave station 8, and the DTC slave station 8 transmits the display initial information. Information is transmitted to the ITC master station 3 (S244). Here, since the display line for TC is normal, it is not necessary to consider the initial information collection time (15 seconds) after the establishment of the line link in S237.

DESCRIPTION OF SYMBOLS 1 ... Control station, 2 ... Control CPU, 3 ... ITC master station, 4 ... Distribution substation, 5 ... TC slave station, 6 ... Analog switchboard, 7 ... TC / DTC converter, 8 ... DTC slave station, 9 ... Hub 10, digital distribution board, 11 CDT, 12 LAN, 13 HDLC, 71 main CPU, 72 CDT line control unit, 73 demodulating unit, 74 modulating unit, 75 power source unit, 76 LAN Line control unit, 77 ... alarm output unit, 78 ... memory.

Claims (11)

  A first communication interface for communicating with an analog remote monitoring and control apparatus to which an analog switchboard is connected; a second communication interface for communicating with a digital remote monitoring and control apparatus to which a digital switchboard is connected; and the analog And a protocol conversion means for mutually converting a first communication protocol for communicating with the remote monitoring control apparatus for digital and a second communication protocol for communicating with the digital remote monitoring control apparatus. Protocol conversion device. The protocol conversion device according to claim 1, wherein the first communication protocol is a CDT method, and the second communication protocol is an IP method.
The protocol conversion device, wherein the protocol conversion unit converts a communication protocol from the CDT method to the IP method or from the IP method to the CDT method.   3. The protocol conversion device according to claim 2, wherein when transmitting control information for controlling the analog switchboard from the digital remote monitoring and control device to the analog remote monitoring and control device, the protocol conversion means includes: A protocol conversion apparatus for converting an address corresponding to the IP method for identifying a control item of control information into an address corresponding to the CDT method.   4. The protocol conversion device according to claim 3, wherein the protocol conversion unit converts an address corresponding to the IP method for designating a control method for each item of the control information into an address corresponding to the CDT method. A protocol converter characterized by that.   3. The protocol converter according to claim 2, wherein display information for displaying status information of the analog switchboard is transmitted from the analog remote monitoring and control device to the digital remote monitoring and control device. Converts the address corresponding to the CDT method for identifying the display item of the display information into an address corresponding to the IP method.   6. The protocol conversion apparatus according to claim 5, wherein when a state change is detected in any of the display items, the protocol conversion unit corresponds to the CDT method for identifying the display item in which the state change is detected. A protocol conversion apparatus for converting an address into an address corresponding to the IP system.   3. The protocol conversion device according to claim 2, wherein when the measurement information of the analog switchboard is transmitted from the analog remote monitoring and control device to the digital remote monitoring and control device, the protocol conversion means measures the measurement information. A protocol conversion apparatus for converting an address corresponding to the CDT method for identifying an item into an address corresponding to the IP method.   8. The protocol conversion device according to claim 1, wherein when the occurrence of a failure relating to the analog switchboard is notified from the analog remote monitoring control device, a selection signal for the notification is transmitted to the analog remote monitoring control device. A protocol converter that obtains detailed fault information corresponding to the selection signal from the analog remote monitoring controller. Remote monitoring control comprising a monitoring control master station for performing centralized monitoring control and a digital remote monitoring control apparatus connected to a digital switchboard, wherein the monitoring control master station and the digital remote monitoring control apparatus are connected A system,
An analog remote monitoring and control device to which an analog switchboard is connected is connected to the digital remote monitoring and control device via a protocol conversion device,
The protocol conversion device mutually converts a first communication protocol for communicating with the analog remote monitoring control device and a second communication protocol for communicating with the digital remote monitoring control device. A remote monitoring and control system. The remote monitoring control system according to claim 9, wherein the first communication protocol is a CDT method, and the second communication protocol is an IP method.
The remote monitoring control system, wherein the protocol conversion device converts a communication protocol from the CDT method to the IP method or from the IP method to the CDT method. 11. The remote monitoring control system according to claim 9 or 10, wherein the protocol conversion device, when notified of the occurrence of a failure related to the analog switchboard from the analog remote monitoring control device, sends a selection signal for the notification to the analog device. To the remote monitoring and control device,
The analog remote monitoring and control device transmits detailed failure information corresponding to the selection signal to the protocol conversion device,
The protocol conversion device transmits the detailed fault information to the digital remote monitoring and control device after protocol conversion of the detailed failure information.

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