JP2008109568A - Small capacity optical terminal station - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily identify a small-scale substation having a failure. <P>SOLUTION: In substations 1A and 1B, a remote-controlled slave station device 103 and an information transmitting device 104 for communication are installed. In a facility out of monitoring, neither a remote-controlled slave station device 103 nor an information transmitting device 104 for communication is installed. In a business office, a small-scale optical terminal station 201 connected to the substations 1A and 1B via an optical cable is set to "failure on other end (SEND) not detected". The "failure on other end (SEND)" is any failure which occurred on the other end, not a failure in a self-station. A small-capacity optical terminal station 501 connected to the facility out of monitoring via an optical cable is set to "failure on other end (SEND) detected". The small-capacity optical terminal stations 201 and 501 have a function to detect various failures. If they detect at least one failure, they each output a collective failure warning Sb. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a small-capacity optical terminal device connected to an optical cable. More specifically, the present invention relates to a small-capacity optical terminal device used in an optical communication system in which a remote monitoring control system and a communication monitoring system are constructed.

  Along with the development of the optical communication network, the optical communication system is constructed by connecting the sales office and the small electrical station (or between the small electrical station and the small electrical station) with an optical cable. Small-capacity optical terminal equipment is adopted at the small and small electric stations.

  As shown in FIG. 3, a remote monitoring control system (distance control system) is constructed between the small-scale electric stations 8A and 8B and the sales office 9. In the remote control system, there is a long distance between the small electrical stations 8A and 8B (specifically, the remote control station device 803) and the control station 9b (specifically, the remote control station device 903) provided in the sales office 9. By exchanging information related to supervisory control (distance information), devices (for example, transformers and circuit breakers) related to power supply installed remotely can be controlled from the control station 9b.

  As shown in FIG. 4, the conventional small-capacity optical terminal device 801 (or 901) has a function of detecting various failures related to transmission / reception of information in a small-scale electric station. Outputs a failure alarm. Types of failure include own device transmission system failure (TX, LD, PLO), reception failure (RX, ERR), and game failure (SEND). For various reasons for small-capacity optical terminal devices such as “simplification of device”, “cost reduction”, and “applicable section is limited to local”, these alarms are calculated using and, or, etc. Are output as a collective failure alarm from only one output contact to the outside of the apparatus.

  Further, in the remote control system, the collective failure alarm Sb output from the small-capacity optical terminal device 801 is a small scale so that the control station 9b provided in the sales office 9 can grasp the presence or absence of a failure in the small-scale electric station. It is transmitted from the electric stations 8A and 8B to the control station 9b. At the control station 9b, the presence / absence of a failure at each small-scale electric station is grasped by the presence / absence of the collective failure alarm Sb.

  Furthermore, a communication monitoring system for maintaining and managing optical cables is also constructed between the small-scale electrical stations 8A and 8B and the sales office 9. In the communication monitoring system, the collective failure alarm Sb output from the small-capacity optical terminal device 801 is transmitted from the small-scale electrical stations 8A and 8B (specifically, the communication information transmission device 804) to the communication station 9a provided in the sales office 9. (In detail, the information is transmitted to the communication monitoring device 904), and the communication station 9a determines whether or not there is a failure in each small-scale electric station. Further, when it is determined at the communication station 9a that a failure has occurred at each small-scale electric station, the worker is sent to the small-scale electric station that has transmitted the collective failure alarm Sb to the small-scale electric station. Check and repair various communication devices installed in Specifically, the small-capacity optical terminal device 801 is configured such that an alarm lamp is lit according to the type of failure detected. The worker refers to the warning lamp to determine what kind of communication failure has occurred in the small-scale electric station.

  The changeover switch 802 is provided for switching an optical cable connected to the remote control station apparatus 803, and the changeover switch 902 is provided for switching an optical cable connected to the remote control station apparatus 903.

Further, Patent Literature 1 and the like exist as literature on the optical terminal device.
JP-A-8-97774

  However, the conventional small-capacity optical terminal device cannot be set to “output” or “do not output” for each of various alarms, and all alarms including alarms about game failure (SEND) are not possible. Is output as a batch failure alarm. Therefore, if a game failure (SEND) is detected, a collective failure alarm is sent from both small-scale electrical stations 8A and 8B (A and B stations). It is necessary to check the status. More specifically, the game failure (SEND) is not a failure at the own station (for example, the A station) but a certain failure (for example, a reception failure (RX)) that occurs at the other end (the B station). For example, when reception on the B station side is interrupted, a reception failure (RX) is detected on the B station side, a collective failure alarm is output, and a SEND bit is sent from the B station to the A station. Thereby, a game failure (SEND) is detected on the A station side, and a collective failure alarm is output. That is, a collective failure alarm is output from both the A station and the B station. In this case, at the communication station, it is impossible to specify whether the failure occurs in the A station or the B station. Therefore, the worker is sent to both the A station and the B station so that the small-capacity optical terminal apparatus can be used. It is necessary to judge the failure state by looking at the alarm lamp.

  An object of the present invention is to provide a small-capacity optical terminal device that can easily identify a facility in which a failure has occurred.

  A small-capacity optical terminal device according to the present invention is an optical cable that connects an electrical station and other equipment in an electrical station where a failure information transmission device that exchanges information with a failure monitoring device that monitors a communication failure is installed. Connected. The small-capacity optical terminal device includes a failure detection unit that detects a failure related to transmission / reception of information at the electric station (own device failure) and a failure related to transmission / reception in other equipment connected via the optical cable (game failure); A batch failure alarm output unit that outputs a batch failure alarm to the failure information transmission device when at least one failure is detected by the failure detection unit; and the game failure from the failure detection unit to the batch failure alarm output unit A detection result switching unit capable of switching between a cut-off state for cutting off the output of the detection result for and a passing state for passing the output of the detection result for the game failure. The detection result switching unit is set to a cutoff state when the failure information transmission device is provided in the other equipment, and is passed when the failure information transmission device is not provided in the other equipment. Set to state.

  In the above-mentioned small-capacity optical terminal device, when a failure information transmission device is provided in a facility (opposite device) that is opposed via an optical cable, a failure occurs at one electric station because a failure to send (SEND) is not detected. Even so, the collective failure alarm resulting from the failure is not transmitted from the electrical plant adjacent to the electrical plant where the failure has occurred. Therefore, it is possible to easily identify the electric station where the failure has occurred. On the other hand, when a failure information transmission device is not provided in the opposite device, a game failure (SEND) is detected, so that the failure of the opposite device can be monitored.

  In addition, the small-capacity optical terminal equipment is connected to an optical cable that connects the sales office and other equipment at a sales office where a fault monitoring apparatus that exchanges information about communication faults with the fault information transmission apparatus is installed. The The small-capacity optical terminal device includes a failure detection unit that detects a failure related to transmission / reception of information at the sales office (own device failure) and a failure related to transmission / reception in other equipment connected via the optical cable (playing failure). A batch failure alarm output unit that outputs a batch failure alarm to the failure monitoring device when at least one failure is detected by the failure detection unit, and the game failure from the failure detection unit to the batch failure alarm output unit A detection result switching unit capable of switching between a shut-off state for shutting off the output of the detection result and a passing state for passing the output of the detection result for the game failure. The detection result switching unit is set to a cutoff state when the failure information transmission device is provided in the other equipment, and is passed when the failure information transmission device is not provided in the other equipment. Set to state.

  As described above, it is possible to easily identify an electric station where a failure has occurred.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

<Configuration>
FIG. 1 shows the overall configuration of an optical communication system according to an embodiment of the present invention. In this system, various information (distance information, failure alarm) is exchanged between the sales office 2 and the small-scale electric stations 1A and 1B via optical cables.

  A remote monitoring control system (distance control system) is constructed between the small-scale electrical stations 1A and 1B and the control station 2b provided in the sales office 2. In the remote control system, information relating to remote monitoring control (distance control information) is exchanged between the small-scale electric stations 1A and 1B and the control station 2b, thereby relating to the power supply provided near the small-scale electric station. A device (for example, a transformer or a circuit breaker) is remotely controlled from the control station 2b. Further, in this system, information on whether or not there is a failure in a small-scale electric station (collective failure alarm Sb) is transmitted from the small-scale electric stations 1A and 1B to the control station 2b, and the control station 2b detects a failure in each small-scale electric station. It is possible to grasp the presence or absence.

  Furthermore, a communication monitoring system is constructed between the small-scale electrical stations 1A and 1B and the communication station 2a provided in the sales office 2. In the communication monitoring system, the collective failure alarm Sb is transmitted from the small-scale electric stations 1A and 1B to the communication station 2a, and the communication station 2a can grasp the presence / absence of a failure at each small-scale electric station.

[Small Scale Electricity Station]
Each of the small-scale electric power stations 1A and 1B (A station and B station) includes two small-capacity optical terminal devices 101, a changeover switch 102, a far-restricted station device 103, and a communication information transmission device 104. Is provided.

  Each of the small-capacity optical terminal devices 101 has a function of detecting various failures related to transmission / reception of information in a small-scale electric station. When a failure is detected, a failure alarm is output for each failure. The small-capacity optical terminal device 101 outputs a collective failure alarm Sb when detecting at least one of various failures. Note that the small-capacity optical terminal device 101 provided in the small-scale electrical station is set to “no SEND detection”.

  The changeover switch 102 switches the optical cable connected to the remote control station device 103.

  The remote control station device 103 transmits and receives remote control information via an optical cable connected to the remote control station device 102 by the changeover switch 102. The remote control station device 103 controls a device (for example, a transformer or a circuit breaker) according to the received remote control information. Further, the remote control station device 103 receives the collective failure alarm Sb output from the small-capacity optical terminal device 101 and transmits the collective failure alert Sb to the sales office 2.

  The communication information transmission device 104 receives the collective failure alarm Sb output from the small-capacity optical terminal device 101 and transmits the collective failure alert Sb to the sales office 2.

[Unsupervised facilities (customer facilities)]
Neither the remote control station device 103 nor the communication information transmission device 104 is provided in unsupervised equipment (customer equipment or the like), but a small-capacity optical terminal device 601 is provided. The small-capacity optical terminal apparatus 601 has the same configuration as the small-capacity optical terminal apparatus 101, and is set to “no SEND detection”.

[Sales Office]
The sales office 2 is provided with a control office 2b and a communication office 2a. In the sales office 2, small-capacity optical terminal devices 201 and 501 are installed. The small-capacity optical terminal devices 201 and 501 have the same configuration as the small-capacity optical terminal device 101, the small-capacity optical terminal device 201 is set to “no SEND detection”, and the small-capacity optical terminal device 501 “SEND detected” is set.

  In the control station 2b, a changeover switch 202 and a remote control master station device 203 are installed. The changeover switch 202 switches the optical cable connected to the remote control master station device 203. The remote control master station device 203 transmits and receives remote control information via an optical cable connected to the remote control master station device 203 by the changeover switch 202. Further, the remote control master station device 203 receives the collective failure alarm Sb via the optical cable connected to the remote control master station device 203 by itself. Further, the remote control master station device 203 receives the collective failure alarm Sb from the small capacity optical terminal devices 201 and 501.

  A communication monitoring device 204 is installed in the communication station 2a. The communication monitoring device 204 receives the collective failure alarm Sb via the optical cable. Further, the communication monitoring device 204 receives the collective failure alarm Sb from the small-capacity optical terminal devices 201 and 501.

  For the collective failure alarm transmitted from the remote control station device 103 to the remote control master station device 203 (or from the communication information transmission device 104 to the communication monitoring device 204), which remote control station device has the collective failure alarm. Information (for example, an identification code given to each remote control station device) for identifying whether it is transmitted from (or a communication information transmission device) is given. Thereby, the remote control master station device 203 (or the communication monitoring device 204) can identify the transmission source of the collective failure alarm.

<Internal configuration of small-capacity optical terminal equipment>
FIG. 2 shows an internal configuration of the small-capacity optical terminal apparatus shown in FIG. Each of the small-capacity optical terminal devices 101, 201, 501, 601 includes a failure detection unit 111, a collective failure alarm output unit 112, and a switch (detection result switching unit) 113.

When the failure detection unit 111 detects various failures related to transmission / reception of information in a small-scale electric station, the failure detection unit 111 outputs a failure alarm for each detected failure. Types of failure include own device transmission system failure (TX, LD, PLO), reception failure (RX, ERR), and game failure (SEND). The failure TX indicates a failure on the transmitting side, the failure LD indicates an overcurrent, the failure PLO indicates a failure in the clock system, the failure RX indicates a failure on the receiving side, and the failure ERR indicates a bit error. The game failure SEND indicates a failure (for example, reception failure (RX)) that has occurred at the other end (station B), not a failure at the own station (for example, station A). The failure detection unit 111 detects various failures (TX, LD, PLO, RX, ERR, SEND), and failure alarms (S _TX , S _LD , S _PLO , S _RX , S) corresponding to the detected failures. _ERR , S _SEND ) is output. For example, when the failure detection unit 111 detects the failure TX, the failure detection unit 111 outputs a failure alarm _STX .

The collective fault alarm output unit 112 outputs a collective fault alarm Sb when receiving at least one of the fault alarms S _TX , S _LD , S _PLO , S _RX , S _ERR , S _SEND from the fault detection unit 111.

The switch 113 connects / disconnects the output of the failure alarm S _SEND from the failure detection unit 111 to the collective failure alarm output unit 112. When “SEND is not detected” is set, the switch 113 is turned off, and the failure warning S _SEND is not output to the collective failure warning output unit 112. When “SEND detected” is set, the switch 113 is turned on, and a failure warning S _SEND is output to the collective failure alarm output unit 112.

  The collective failure alarm Sb from the collective failure alarm output unit 112 is output to the remote control station device 103 and the communication information transmission device 104 (or the remote control station device 203 and the communication monitoring device 204).

<Operation>
Next, the operation of the distance control system shown in FIG. 1 will be described.

  First, it is assumed that a communication failure has occurred in the small-scale electric power station A (A station). At this time, the small-capacity optical terminal device 101 installed in the A station outputs a collective failure alarm Sb to the far-restricted station device 103 and the communication information transmission device 104.

  Next, the communication information transmission device 104 transmits the collective failure alarm Sb to the communication monitoring device 204 via an optical cable. When the communication monitoring device 204 receives the collective failure alarm Sb via the optical cable, the communication monitoring device 204 notifies the worker that the communication failure has occurred in the A station. For example, the communication monitoring device 204 is provided with a warning lamp, and the warning lamp is turned on when the collective failure alarm Sb is received. In this way, the operator of the communication station 2a can know whether or not there is a failure in each small-scale electric station.

  On the other hand, the remote control station device 103 transmits a collective failure alarm Sb to the remote control station device 203 via an optical cable. When receiving the collective failure alarm Sb via the optical cable, the remote control master station device 203 notifies the station A that a communication failure has occurred in the A station. In this way, the operator of the control station 2b can know whether or not there is a failure in each small-scale electric station.

  Further, when a failure occurs in an unmonitored facility (customer facility), the small-capacity optical terminal device 501 receives the SEND bit from the small-capacity optical terminal device 601 and sends a collective failure alarm Sb to the remote control station. The data is output to the device 203 and the communication monitoring device 204. Thereby, the presence or absence of a failure can be known in each of the communication station 2a and the control station 2b.

<Effect>
As described above, in a small-scale electric station (a small-scale electric station in which a communication information transmission device is installed) that can detect a failure of the opposite device, the small-capacity optical terminal device detects a station failure (SEND). Therefore, even when a failure occurs in one small-scale electric station, a collective failure alarm resulting from the failure is not transmitted from the adjacent small-scale electric station. Therefore, it is possible to easily identify a small-scale electric station where a failure has occurred. On the other hand, since the small-capacity optical terminal device facing the facility in which the communication information transmission device is not installed detects a game failure (SEND), the failure in the opposite device can be monitored.

  As described above, the present invention is useful as a small-capacity optical terminal device or the like employed in an optical communication system in which a remote monitoring control system and a communication monitoring system are constructed.

1 is a diagram showing an overall configuration of an optical communication system according to an embodiment of the present invention. It is a block diagram which shows the internal structure of the small capacity | capacitance optical terminal device shown in FIG. It is a figure which shows the whole structure of the conventional optical communication system. It is a figure for demonstrating the conventional small capacity | capacitance optical terminal device.

Explanation of symbols

1A, 1B Small electrical station 2 Sales office 2a Communication station 2b Control station 101, 201, 501, 601 Small capacity optical terminal device 102, 202 Changeover switch 103 Remote control station device 104 Communication information transmission device 203 Remote control Station device 204 Communication monitoring device 111 Failure detection unit 112 Collective failure alarm output unit 113 Switch

Claims (2)

A small-capacity optical terminal device connected to an optical cable connecting the electric station and other equipment in an electric station where a fault information transmission apparatus for exchanging information with a fault monitoring apparatus for monitoring communication faults is installed. There,
A failure detection unit that detects a failure related to transmission / reception of information at the electric station (own device failure) and a failure related to transmission / reception in other equipment connected via the optical cable (game failure);
When at least one failure is detected by the failure detection unit, a batch failure alarm output unit that outputs a batch failure alarm to the failure information transmission device;
Detection result capable of switching between a shut-off state for shutting off the output of the detection result for the game failure from the failure detection unit to the collective failure alarm output unit and a passing state for allowing the output of the detection result for the game failure to pass A switching unit,
The detection result switching unit is set to a cut-off state when the failure information transmission device is provided in the other equipment, and passes when the failure information transmission device is not provided in the other equipment. A small-capacity optical terminal device characterized by being set to a state. A small-capacity optical terminal device connected to an optical cable connecting the sales office and other equipment at a sales office where a fault monitoring device for exchanging information about communication failures with the fault information transmission device is installed. And
A failure detection unit that detects a failure related to transmission / reception of information at the sales office (own device failure) and a failure related to transmission / reception in other equipment connected via the optical cable (game failure);
A batch failure alarm output unit for outputting a batch failure alarm to the failure monitoring device when at least one failure is detected by the failure detection unit;
Detection result capable of switching between a shut-off state for shutting off the output of the detection result for the game failure from the failure detection unit to the collective failure alarm output unit and a passing state for allowing the output of the detection result for the game failure to pass A switching unit,
The detection result switching unit is set to a cut-off state when the failure information transmission device is provided in the other equipment, and passes when the failure information transmission device is not provided in the other equipment. A small-capacity optical terminal device characterized by being set to a state.

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