JP2016208750A - Monitoring and controlling system, and monitoring and controlling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring and controlling system that is capable of using an existing system and enables a system terminal to perform monitoring and controlling without considering a plurality of types of non-Internet protocols.SOLUTION: A monitoring and controlling system comprises: system terminals 11, 31, 32 that monitor and control a plurality of substation side apparatuses 51, 52 by transmitting/receiving information to/from the plurality of substation side apparatuses 51, 52 through communication channels 20, 40; and an information conversion device 33 that is connected to the system terminals by using a first communication channel 20 compliant to an Internet protocol of the communication channels 20, 40 as well as connected to the plurality of substation side apparatuses 51, 52 by using a plurality of types of second communication channels 40 compliant to a plurality of types of non-Internet protocols (for example, CDT and HDLC) of the communication channels 20, 40 and performs mutual conversion between information on the first communication channel 20 and information on the second communication channels 40.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a monitoring control system and a monitoring control method for monitoring and controlling a power system.

  In the power grid, the power generated at the power station is supplied to the primary transmission line, the power transmitted through the primary transmission line is stepped down at the power transmission substation and supplied to the secondary power transmission line, and then at the distribution substation. The voltage is stepped down and supplied to the distribution line. A monitoring control system is known as a system for monitoring and controlling such a power system. This monitoring control system includes a system terminal that monitors and controls equipment such as a plurality of substations, and a remote monitoring control device (TC: telecontrol) that transmits information between equipment such as a plurality of substations and the system terminal. Unit). Since this supervisory control system has been provided before the development of Internet technology, there exists a supervisory control system in which a system terminal and a remote supervisory control device are connected by a non-Internet line. In such a supervisory control system, information is transmitted through a non-Internet line.

  Patent Document 1 below discloses a monitoring control system capable of transmitting information using Internet technology. In this supervisory control system, a supervisory control server and a remote supervisory control unit master station (TC master station) are connected via an intranet, and a remote supervisory control unit master station and a remote supervisory control unit slave station (TC slave station) communicate with each other through a transmission line. Connected with.

Japanese Patent Laid-Open No. 2002-300736

  Patent Document 1 does not disclose performing data conversion between an Internet protocol and a non-Internet protocol. Therefore, the transmission path of the monitoring control system described in Patent Document 1 is considered to be a transmission path for transmitting information (signal) compliant with the Internet protocol. In this case, it is difficult to apply to a monitoring control system that monitors and controls equipment through a non-Internet line. That is, it is necessary to replace all remote monitoring control devices provided corresponding to a large number of facilities such as substations with new devices for the Internet line, which entails enormous costs.

  Further, in the existing monitoring control system, a plurality of types of communication protocols (communication protocol) such as CDT (Cyclic Data Transfer) and HDLC (High Level Data Link Control) are used as non-Internet protocols. In this case, the data format, the transmission procedure, and the like are different for each communication protocol, and the monitoring control in the system terminal becomes complicated, and the system development cost also increases.

  The present invention has been made in view of the above-described circumstances, and can be used for an existing system and can be monitored and controlled by a system terminal without being aware of a plurality of types of non-Internet protocols. An object is to provide a system and a monitoring control method.

  In order to achieve the above object, the present invention provides a system terminal that monitors and controls a plurality of substation-side devices by transmitting and receiving information to and from the plurality of substation-side devices through a communication line, Connected to the system terminal via a first communication line compliant with the Internet protocol of the above, and connected to a plurality of substation side devices via a plurality of types of second communication lines compliant with a non-Internet protocol of a plurality of types of communication lines. A monitoring control system comprising an information conversion device that mutually converts information on a first communication line and information on a second communication line is provided.

  In addition, an information acquisition device that acquires and aggregates information from a plurality of substation-side devices is provided, and the information conversion device converts the information in the non-Internet protocol data format acquired by the information acquisition device into the data format of the Internet protocol. It may be configured to convert to information. The information of the data format of the Internet protocol may be information of a unified format. The plurality of types of non-Internet protocols may include CDT and HDLC.

  The present invention also provides a monitoring control method for monitoring and controlling a plurality of substation-side devices by transmitting and receiving information to and from the plurality of substation-side devices through a communication line. Information of the first communication line connected to the system terminal in conformity with the Internet protocol of the present invention, and a plurality of types of first communication lines to be connected to the plurality of substation-side equipment conforming to the plurality of types of non-internet protocols out of the communication lines. Provided is a monitoring control method characterized by mutually converting information of two communication lines.

  In the present invention, a system terminal that monitors and controls a plurality of substation-side devices by transmitting and receiving information to and from the plurality of substation-side devices through a communication line, and a first that conforms to the Internet protocol of the communication lines. Connected to the system terminal via a communication line, connected to a plurality of substation-side devices via a plurality of types of second communication lines conforming to a plurality of types of non-Internet protocols, and information on the first communication line And an information conversion device that converts information of the second communication line to each other. According to such a configuration, an existing system can be used, and the system terminal can perform monitoring control without being aware of a plurality of types of non-Internet protocols.

It is a block diagram which shows the structure of the monitoring control system of this invention. It is a figure which shows an example of the format structure of the information transmitted with a direct control line network. It is a sequence diagram which shows the transmission control procedure of the information between the system side and the substation side. It is a flowchart which shows the information conversion process which a standard TCIF apparatus and a TC slave station perform.

  Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to this. Further, in the drawings, in order to describe the embodiment, the scale may be appropriately changed and expressed, for example, partly enlarged or emphasized.

  FIG. 1 is a block diagram showing the configuration of the supervisory control system SYS of the present invention. The monitoring control system SYS shown in FIG. 1 is a system that monitors and controls a power system. As shown in FIG. 1, system control system 11, DX-GW device 12, power distribution control system 31, equipment state monitoring system 32, standard TCIF device 33, TC master station 34 (TC: telecontrol unit, remote monitoring control device) And a TC slave station 51.

  The power system is monitored and controlled by a power station 10 (also referred to as a branch power station) and a control station 30. For example, about 10 power supply stations 10 are provided, and about 50 control stations 30 are provided. In the example illustrated in FIG. 1, a power supply station 10 is provided with a system control system 11 and a DX-GW apparatus 12. The control center 30 is provided with a power distribution control system 31, an equipment state monitoring system 32, a standard TCIF device 33, and a TC master station 34. In the substation, a TC slave station 51 and a substation facility 52 are provided. For example, about 1500 substations 50 are provided.

  The system control system 11 (system terminal) is a system that monitors and controls a substation switching facility in a power transmission system (for example, a system of 66,000 V or more) in the power system. The system control system 11 includes one or a plurality of servers and computers. The system control system 11 is connected to a direct control line network 20 which is a communication line compliant with the Internet protocol (IP).

  The DX-GW apparatus 12 is an apparatus that realizes transmission of information (signal) between a DX network (DX: Data Exchanger) (not shown) that is a communication line compliant with a non-Internet protocol and a direct control circuit network 20. . That is, the DX-GW apparatus 12 converts information on the DX network into information that can be directly transmitted to the control communication line network 20, and converts information on the direct control communication line 20 into information that can be transmitted to the DX network.

  The power distribution control system 31 (system terminal) is a system that monitors and controls a substation of a power distribution system (for example, a system of 22,000 V or 6,000 V) in the power system, a switching facility for a distribution line, or the like. The power distribution control system 31 is also composed of one or a plurality of servers and computers. The power distribution control system 31 is also connected to the direct control line network 20 which is a communication line compliant with the Internet protocol. The equipment state monitoring system 32 (system terminal) monitors and maintains the state of the substation equipment 52 in the transmission / distribution system (transmission system, distribution system) for maintenance of the substation 50 with an unmanned rate of nearly 100%. It is a system (maintenance system) that supports business. This equipment state monitoring system 32 is also composed of one or a plurality of servers and computers. The equipment state monitoring system 32 is also connected to the direct control line network 20 which is a communication line compliant with the Internet protocol.

  The standard TCIF device 33 (information conversion device) is directly connected to the control line network 20, and is connected to the TC master station 34 by, for example, a system bus. The standard TCIF device 33 converts information of the direct control network 20 into information of CDT (Cyclic Data Transfer) and HDLC (High Level Data Link Control) which are non-Internet protocols that can be transmitted to the TC master station 34, CDT and HDLC information, which is a non-Internet protocol, from the TC master station 34 is converted into information (Internet protocol information) that can be directly transmitted to the control line network 20.

  The TC master station 34 (information acquisition device) is connected to the standard TCIF device 33 by, for example, a system bus or the like, and is connected to a plurality of TC slave stations 51 by the TC line 40. The TC master station 34 transmits information transmitted from the standard TCIF device 33 to the TC slave station 51. Here, the TC line 40 includes a communication line (CDT line) compliant with CDT, which is a non-Internet protocol, and a communication line (HDLC line) compliant with HDLC, which is a non-Internet protocol. Further, the TC master station 34 aggregates information on the TC line 40 transmitted from the plurality of TC slave stations 51 and transmits the information to the standard TCIF apparatus 33. In the present embodiment, the standard TCIF device 33 constitutes an information conversion device.

  In the present embodiment, the standard TCIF device 33 and the DX-GW device 12 are provided, and the DX-GW device 12 directly converts the information of the control line network 20 into information of the DX network, so that other systems in the DX network Can work with. Further, the standard TCIF device 33 directly converts the information of the control network 20 and the non-Internet protocol (CDT or HDLC). Thereby, the system terminal (system control system 11, power distribution control system 31, equipment state monitoring system 32) transmits / receives information to / from the TC master station 34 and the TC slave station 51 through the direct control circuit network 20, thereby the substation 50. Can monitor and control the substation equipment 52

  The plurality of TC slave stations 51 (substation equipment) are connected to the TC master station 34 via the TC line 40 and connected to the substation equipment 52 via wiring. The plurality of TC slave stations 51 collect information (analog information) of the substation equipment 52, and convert the collected information into information (digital information) that can be transmitted through the TC line 40. The plurality of TC slave stations 51 convert the information (digital information) of the TC line 40 transmitted from the TC master station 34 into information (analog information) corresponding to the substation equipment 52 and output the information to the substation equipment 52. To do. The TC master station 34 and the TC slave station 51 constitute a TC (distant monitoring control device). The TC slave station 51 is provided, for example, about 2500 to 2600.

  The substation facility 52 is a facility provided on the premises of the substation 50 and includes devices such as a transformer and a circuit breaker. Information on the substation equipment 52 includes on / off information of transformers and circuit breakers, contact information (switch on / off information), and the like. In the present embodiment, the TC slave station 51 and the substation equipment 52 constitute a substation-side device.

  Next, information transmitted and received on the direct control line network 20 will be described. Information transmitted / received on the direct control network 20 includes monitoring control information, operation information, and other information. The supervisory control information is information for acquiring the status of the equipment 52 on the premises of the substation 50 and the equipment of the distribution lines and controlling those equipment, and includes system monitoring information and control information.

  The system monitoring information includes TM information measured in the substation 50, SV information for monitoring the state of the substation equipment 52 in the substation 50 (for example, failure, state change, etc.). The control information includes substation control information (switch ON / OFF information that can be remotely controlled between the system terminal connected by the direct control network 20 and the substation 50, relay use / lock information, etc.), Distribution device monitoring control information (such as on / off information of switches that can be monitored remotely from each distribution control system 31 connected via the direct control network 20), substation status setting information (connected via the direct control network 20) Information for status setting from the connected system terminal to the target substation 50), substation status request information (monitoring information from the system terminal connected by the direct control network 20 to the target substation 50) And information for requesting the status of status setting).

  The operation information is information for linking between system terminals. The other information is information other than the monitoring control information and the operation information, such as initial processing information at the time of starting the system, reception confirmation information to the information transmission source, and the like.

  Next, a format configuration of information transmitted / received in the direct control line network 20 will be described. FIG. 2 is a diagram showing an example of a format configuration of information transmitted through the direct control network 20. As shown in FIG. 2, the information includes a transmission header part, a data part, an authentication part, and an FCS (Frame Check Sequence). The configuration of the transmission header part conforms to the UDP / IP protocol. The data in the data part has a maximum of 1266 bytes. Authentication data is stored in the authentication unit. FCS is data for detecting a frame error.

  Next, a transmission control procedure for information between the system side and the substation 50 side will be described. FIG. 3 is a sequence diagram showing a transmission control procedure of information between the system side (system terminal) and the substation 50 side. In the process shown in FIG. 3, when the system terminal transmits control information (selection command) for instructing selection of a control target to the substation 50 side (step S <b> 1), the standard TCIF device 33 has successfully received the control information. In this case, reception confirmation information (Ok-Ack) indicating that reception of control information has been confirmed is returned to the system terminal (step S2). The standard TCIF device 33 converts the received control information into data, and transmits the information to the TC master station 34.

  When the standard TCIF device 33 receives control information (selection completion) for instructing completion of selection of a control target from the TC master station 34, the standard TCIF device 33 transmits control information (selection completion) to the system terminal that has transmitted the control information (selection instruction). (Step S3). If the control information is normally received, the system terminal returns reception confirmation information (Ok-Ack) indicating that the control information has been received to the standard TCIF device 33 (step S4).

  When receiving the system monitoring information (SV information; information transmitted from the substation facility 52) transmitted from the TC master station 34, the standard TCIF device 33 transmits the system monitoring information (SV information) to the target system terminal. (Step S5). When the standard TCIF device 33 receives the system monitoring information (TM information; information transmitted from the substation facility 52) transmitted from the TC master station 34, the system monitoring information (TM information) is the target system terminal. (Step S6). Note that the system terminal does not return the reception confirmation information when the system monitoring information is received.

  Note that the standard TCIF device 33 and the system terminal do not transmit the reception confirmation information when the control information cannot be normally received. In this case, when the standard TCIF device 33 and the system terminal do not receive the reception confirmation information even after a predetermined time has elapsed after transmitting the control information, the standard TCIF device 33 and the system terminal transmit the control information again.

  Next, operations of the standard TCIF device 33, the TC master station 34, and the TC slave station 51 will be described. FIG. 4 is a flowchart showing information conversion processing executed by the standard TCIF device 33 and the TC slave station 51. Note that the process shown in FIG. 4 is a process when the system monitoring information is transmitted from the substation 50 side to the system side. First, the TC slave station 51 periodically collects system monitoring information from the substation equipment 52, for example (step S11). Next, the TC slave station 51 converts the collected system monitoring information into information (CDT or HDLC data format information) that can be transmitted to the TC line 40 (step S12). At this time, if the TC slave station 51 is a device compatible with CDT, the data is converted into the CDT data format. If the TC slave station 51 is a device compatible with HDLC, the data is converted into the HDLC data format. Then, the TC slave station 51 transmits the data-converted system monitoring information to the TC master station 34 via the TC line 40.

  When the TC master station 34 receives the system monitoring information in the CDT or HDLC data format transmitted from the TC slave station 51, the TC master station 34 aggregates the received system monitoring information and transmits it to the standard TCIF apparatus 33 via the system bus or the like. (Step S13). When receiving the system monitoring information in the CDT or HDLC data format transmitted from the TC master station 34, the standard TCIF device 33 converts the received system monitoring information into information in the Internet protocol data format (step S14). Then, the standard TCIF device 33 transmits the system monitoring information obtained by the data conversion directly to the target system terminal via the control line network 20.

  In addition, when control information is transmitted from the system side to the substation 50 side, processing reverse to the information conversion processing shown in FIG. 4 is performed. That is, the standard TCIF device 33 converts the control information in the data format of the Internet protocol into information in the CDT or HDLC data format, and the TC slave station 51 controls the control information in the data format of the TC line 40 (CDT or HDLC data format). Is converted into information for controlling the substation equipment 52.

  As described above, in the present embodiment, the plurality of substation-side devices 51 and 52 are monitored and controlled by transmitting and receiving information to and from the plurality of substation-side devices 51 and 52 through the communication lines 20 and 40. System terminals 11, 31, and 32 connected to the system terminal via the first communication line 20 compliant with the Internet protocol of the communication lines 20 and 40, and a plurality of types of non-internets of the communication lines 20 and 40 A plurality of substation-side devices 51 and 52 are connected by a plurality of types of second communication lines 40 compliant with a protocol (for example, CDT, HDLC), and information on the first communication line 20 and information on the second communication line 40 are mutually exchanged. And an information conversion device 33 for converting the information into the information. According to such a configuration, an existing system can be used, and the system terminals 11, 31, and 32 can perform monitoring control without being aware of a plurality of types of non-Internet protocols. Thus, since an existing system can be used, costs can be suppressed even when a system using Internet technology is constructed. In addition, since the system terminals 11, 31, and 32 can perform monitoring control without being aware of a plurality of types of non-Internet protocols, the system terminals do not need to recognize the data format or transmission procedure for each communication protocol, Monitoring control can be simplified and system development costs can be reduced.

  Further, in the present embodiment, the information conversion device 33 mutually converts information in the Internet protocol data format and information in a plurality of types of non-Internet protocol (for example, CDT, HDLC) data formats. According to such a configuration, a system using Internet technology can be constructed without significantly changing the configuration of an existing system using a non-Internet protocol. In the present embodiment, the information acquisition device 34 that acquires and aggregates information from the plurality of substation-side devices 51 and 52 is provided, and the information conversion device 33 is a non-Internet protocol acquired by the information acquisition device 34. Since the information in the data format is converted into the information in the data format of the Internet protocol, the information from the plurality of substation side devices 51 and 52 can be acquired and the data conversion can be performed efficiently.

  In the present embodiment, since the information of the data format of the Internet protocol is information in a unified format (see FIG. 2), the monitoring control of the monitoring control system SYS can be further simplified. System development costs can be reduced. Furthermore, in the present embodiment, the plurality of types of non-Internet protocols include CDT and HDLC that are generally used in the existing supervisory control system SYS. Therefore, the Internet technology is used by using a system using such a communication protocol. Can be built.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the above embodiment without departing from the spirit of the present invention. In addition, one or more of the requirements described in the above embodiments may be omitted. Such modifications, improvements, and omitted forms are also included in the technical scope of the present invention. In addition, the above-described embodiments can be applied in appropriate combination.

  For example, the standard TCIF device 33 and the TC master station 34 may be configured by one device (information conversion device). In this case, one information conversion device aggregates the information of the TC line 40 transmitted from the plurality of TC slave stations 51, and obtains information on the data format of the direct control circuit network 20 and information on the data format of the TC line 40. A configuration for mutual conversion is also possible.

  In addition, the system control system 11 and the DX-GW apparatus 12 are provided in the power supply station 10, and the power distribution control system 31, the equipment state monitoring system 32, the standard TCIF apparatus 33, and the TC master station 34 are provided in the control station 30. However, the present invention is not limited to such a configuration, and the arrangement of each configuration can be changed as appropriate according to the system.

  Also, the information format configuration shown in FIG. 2 and the transmission procedure shown in FIG. 3 are examples, and other format configurations and transmission procedures may be used.

SYS Monitoring control system 10 Power supply station 11 System control system (system terminal)
20 Direct control network (communication line, first communication line)
30 control station 31 power distribution control system (system terminal)
32 Equipment status monitoring system (system terminal)
33 Standard TCIF device (information converter)
34 TC master station (information acquisition device)
40 TC line (communication line, second communication line)
50 substation 51 TC slave station (substation equipment)
52 Substation equipment (substation equipment)

Claims (5)

A system terminal that monitors and controls the plurality of substation-side devices by transmitting and receiving information to and from the plurality of substation-side devices through a communication line;
The communication line is connected to the system terminal through a first communication line that conforms to the Internet protocol, and the plurality of second communication lines that conform to a plurality of types of non-Internet protocols out of the communication lines. And an information conversion device that is connected to the substation-side equipment and converts the information on the first communication line and the information on the second communication line to each other. An information acquisition device that acquires and aggregates information from the plurality of substation-side devices,
The monitoring control system according to claim 1, wherein the information conversion device converts information in the data format of the non-Internet protocol acquired by the information acquisition device into information in the data format of the Internet protocol.   The monitoring control system according to claim 1, wherein the information of the data format of the Internet protocol is information of a unified format.   The monitoring control system according to any one of claims 1 to 3, wherein the plurality of types of non-Internet protocols include CDT and HDLC. A monitoring control method for monitoring and controlling the plurality of substation-side devices by transmitting and receiving information to and from the plurality of substation-side devices through a communication line,
The information on the first communication line connected to the system terminal in compliance with the Internet protocol of the communication lines, and the plurality of substation side devices in compliance with a plurality of types of non-Internet protocols of the communication line A method of monitoring control, comprising: mutually converting information on a plurality of types of second communication lines connected to the network.

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