JP2894544B2 - Distribution line remote monitoring and control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a high-voltage overhead distribution line or the like, and uses a control signal to an automatic switch installed on the distribution line and a monitoring signal about the state of the automatic switch as a carrier wave of the distribution line. The present invention relates to a remote monitoring and control system for transmitting distribution lines.

[0002]

2. Description of the Related Art Conventionally, remote monitoring of distribution lines using a carrier wave.
The control system is configured as shown in FIG. This system includes a PD on a 6 kV high-voltage overhead distribution line 1, for example.
Are arranged, and high-voltage couplers 3 and 4 are connected before and after the automatic switch 2, respectively. The automatic switch 2 and the high-voltage couplers 3 and 4 are connected to a remote controller 8 for the automatic switch via cables 5 and 6 and 7, respectively, and a low-voltage distribution line 9 is connected to the controller 8 as a power supply. ing. The operation of each part will be described. The automatic switch 2 detects the phase detection state of the distribution line 1 in the on / off operation state and the off state, that is, the phase angle of each phase on the load side and the power supply side, and controls them via the cable 5 respectively. To the container 8.

The automatic switch 2 is connected to a distribution line 1 based on a control signal sent from a controller 8 via a cable 5.
Open / close operation. The high-voltage couplers 3 and 4 receive the carrier wave transmitted from the load side or the power supply side of the distribution line 1, convert the carrier wave into a control signal, and send the control signal to the controller 8 via the cables 6 and 7. A signal composed of the monitoring data sent from the controller 8 is converted into a carrier wave and sent to the distribution line 1. The controller 8 transmits monitoring data regarding the automatic switch 2 input from the automatic switch 2 to the cables 6 and 7.
To the high-pressure couplers 3 and 4 via. In addition, both ends of the distribution line 1 are connected to a substation or the like, and a control signal is sent from the central monitoring panel installed there to the distribution line 1 as a carrier wave, and from the automatic switch 2 to the distribution line 1 The monitoring signal transmitted as a carrier is received by the central monitoring panel.

[0004]

However, as described above, the high-voltage couplers 3, 4 and the controller 8
When the distance between the adjacent automatic switches 2 is relatively short, the high-voltage couplers 3 and 4 overlap, and the individual automatic switches 2 are connected via the high-voltage couplers 3 and 4 respectively. In some cases, transmitting and receiving a signal using a carrier wave is meaningless. The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to connect to a distribution line when a plurality of automatic switches are installed at a relatively short distance on the distribution line. It is an object of the present invention to provide a distribution line remote monitoring and control system capable of reducing the cost of the system by minimizing the number of high-voltage couplers.

[0005]

In order to achieve the above object, the present invention transmits a monitoring signal and a control signal relating to a plurality of automatic switches installed on a distribution line using a carrier on the distribution line. In a remote monitoring and control system for a distribution line, a control signal connected to a distribution line before and after a designated automatic switch is received and transmitted as a carrier wave via the distribution line, and the automatic switch A high-voltage coupler that converts a monitoring signal into a carrier wave and transmits it to the distribution line, a remote control master station connected to the automatic switch and the high-voltage coupler, and connected to each other unspecified automatic switch A remote controller slave station, a communication cable connecting the remote controller master station and the remote controller slave station, and a control signal in the remote controller master station received by the high-voltage coupler addressed to the remote controller master station. Is If it is addressed to the remote control slave station, it sends a control signal to the remote control slave station via a communication cable and sends the connected automatic switch. Means for sending the monitoring signal sent from the remote controller and the remote controller slave station to the high-voltage coupler, and the control signal in the remote controller slave station, which is sent from the remote controller master station, to the own / far controller. Means for sending an open / close operation command to the connected automatic switch if it is addressed to the station, and transmitting a monitoring signal from the connected automatic switch to the remote control master station via a communication cable. It is characterized by having.

[0006]

In the present invention, a high-voltage coupler is connected before and after a designated one of a plurality of automatic switches arranged on a distribution line, and the automatic switch is connected to the high-voltage coupler. Is connected to the remote controller master station. A remote control slave station is connected to each other unspecified automatic switch. Further, the remote control master station and the remote control slave station are connected by a communication cable. As a result, in the remote controller master station, when the control signal received by the high-voltage coupler is addressed to the remote controller master station, an open / close operation command is sent to the connected automatic switch, and the remote controller slave station is addressed. Control signal is transmitted to the remote control slave station via the communication cable, and the monitoring signal from the automatic switch and the remote control slave station connected to the remote control slave station is transmitted to the remote control slave station. It is sent from the master station to the high voltage coupler.

Further, in the remote controller slave station, when the control signal sent from the remote controller master station is addressed to its own or remote controller slave station, an opening / closing operation command is sent to the automatic switch connected thereto. At the same time, a monitoring signal from the connected automatic switch is transmitted to the remote controller master station via the communication cable. That is, a high-pressure coupler is not required except for one designated automatic switch, and accordingly, the number of components constituting the system is reduced and the cost can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of a distribution line remote monitoring / control system according to the present invention. In the figure,
Reference numeral 11 denotes a 6 kV high-voltage overhead distribution line to which this system is applied, and a plurality of automatic switches 12 and 13 each having a built-in PD are disposed on the distribution line 11.
The high-voltage couplers 14 and 15 are connected before and after 2, respectively. The automatic switch 12 and the high-pressure couplers 14, 15
The remote controller is connected to an automatic switch remote controller (master station) 19 via cables 16, 17 and 18.

The automatic switch 13 is connected via a cable 21 to a remote control remote controller (slave station) 22 which is a remote control slave station. These controllers 19,
Reference numeral 22 denotes a low voltage distribution line 20 connected as a power source, and a communication cable 23 connects the low voltage distribution lines 20 to each other.
Next, the operation of each part relating to the monitoring data will be described. The automatic switches 12, 13 detect the ON / OFF operation state and the phase detection state of the distribution line 11 in the OFF state, that is, the phase angle of each phase on the load side and the power supply side, The signals are sent to controllers 19 and 22 via cables 16 and 21.

The controller 22 sends monitoring data from the automatic switch 13 to the controller 19 via the communication cable 23 as a monitoring signal. The controller 19 converts the monitoring data from the automatic switch 12 into a monitoring signal and, together with the monitoring signal from the controller 22, transmits the high-voltage coupler 1 via the cables 17 and 18.
Send to 4,15. High voltage couplers 14 and 15 are cables 1
The monitoring signal sent from the controller 19 via the switches 7 and 18 is converted into a carrier wave and sent to the distribution line 11. Next, the operation of each part relating to the control data will be described.
4, 15 are both sides of the automatic switch 12, that is, the distribution line 1
1 receives a carrier wave transmitted from the load side or the power supply side, converts the carrier wave into a control signal, and controls the controller 1 via cables 17 and 18.
Send to 9.

When the destination of the transmitted control signal is addressed to the automatic switch 12, the controller 19 sends an open / close command to the automatic switch 12 via the cable 16. The automatic switch 12 opens and closes the distribution line 11 based on the sent control signal. When the destination of the control signal is another automatic switch 13 or the like, the control signal is sent to the controller 22 via the communication cable 23. When the destination of the transmitted control signal is addressed to the automatic switch 13, the controller 22 sends an open / close command to the automatic switch 13 via the cable 21. The automatic switch 13 opens and closes the distribution line 11 based on the sent control signal.

Although only the automatic switches 12 and 13 are shown in the figure, another automatic switch may be provided on the distribution line 11 in some cases.
As in the case between the controller 9 and the controller 22, the controller is connected in order by a communication cable, so that the configuration is the same. Also, both ends of the distribution line 11 are connected to a substation or the like,
A control signal is transmitted from the central monitoring panel installed therein to the distribution line 11 as a carrier wave, and a monitoring signal transmitted as a carrier wave from the high voltage couplers 14 and 15 to the distribution line 11 is received by the central monitoring panel. .

As described above, in the first embodiment, one of the plurality of automatic switches 12, 13 provided in the distribution line 11
High pressure couplers 14, 15 only for the automatic switches 12
And the other automatic switch 13 is connected to the controller 22 without connecting the high-voltage coupler, and the controller 19 connected to the high-voltage couplers 14 and 15 is set as the master station. The communication cable 23 connects between them, and the master station collectively transmits and receives the carrier wave to and from the distribution line 11. Therefore, when the automatic switches 12, 13 are arranged at relatively short distances and can be easily connected by the communication cable 23, there is no need to connect a high-voltage coupler to each of the automatic switches 12, 13, and the system The cost of the entire system can be reduced as the number of components constituting the system is reduced.

FIG. 2 is a block diagram showing a second embodiment. The configuration of this embodiment is almost the same as that of the embodiment of FIG. 1 except that a high-voltage coupler 24 is arranged in the distribution line 11 on the right outside of the automatic switch 13, and a controller 25 is connected via a cable 25. 22. In particular,
In this embodiment, the automatic switches 12, 13 on the distribution line 11 are provided.
This shows a case where only two of these are managed by the controller 19, and the operation of each part is basically the same as that of the first embodiment. However, since the high-voltage coupler 24 is installed, the controller 19 , The controller 22, the cable 25, and the high-voltage coupler 24, the carrier wave can be transmitted and received on the right side of the distribution line 11.

When this embodiment is compared with the first embodiment,
In the first embodiment, when the automatic switch 13 is open, the controller 19 cannot transmit and receive signals to and from the distribution line 11 connected to the right side of the automatic switch 13. On the other hand, in the second embodiment, it is possible to transmit and receive signals to and from the distribution line 11 on the right outside of the automatic switch 13 via the high-voltage coupler 24. That is, the automatic switch 1
Even when 3 is open, the substation at the right end of the distribution line 11 can monitor and switch on and off the automatic switches 12 and 13. In the second embodiment, the installation of the high-voltage coupler 15 can be omitted. It is also possible to arrange another automatic switch together with the controller between the automatic switches 12 and 13 to perform monitoring and switching control in the same manner.

[0016]

As described above, according to the present invention, a high-voltage coupler is installed only before and after a specified one of a plurality of automatic switches arranged on a distribution line. However, the remote controller master station connected to the automatic switch and the high-voltage coupler collectively transmits and receives all control signals and monitoring signals including other automatic switches, and transmits and receives other control signals via a communication cable. Transmits / receives to / from the remote control slave station connected to the automatic switch.
This eliminates the need for installing a high-pressure coupler for the other automatic switches, thereby reducing the number of components constituting the system and reducing costs.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 High-voltage overhead distribution line 12, 13 Automatic switch 14, 15 High-voltage coupler 16-18 Cable 19 Remote controller for automatic switch (master station) 20 Low-voltage distribution line 21 Cable 22 Remote controller for automatic switch (slave station) 23 Communication cable 24 High-voltage coupler 25 Cable

Claims (1)

(57) [Claims] In a distribution line remote monitoring and control system for transmitting a monitoring signal and a control signal relating to a plurality of automatic switches installed in a distribution line using a carrier wave on the distribution line, one specified automatic A high-voltage coupler that is connected to the distribution lines before and after the switch, receives control signals sent as carrier waves through the distribution lines, and converts monitoring signals for automatic switches into carrier waves and sends them to the distribution lines. A remote controller master station connected to the automatic switch and the high-voltage coupler; a remote controller slave station connected to each other unspecified automatic switch; a remote controller master station and a remote controller A communication cable for connecting to the slave station, and if the control signal received by the high-voltage coupler in the remote controller master station is addressed to the remote controller master station, an open / close operation command is sent to the connected automatic switch. Sending In the case where the remote control device is addressed to the remote control device, the control signal is transmitted to the remote control device via a communication cable, and the monitoring signal sent from the connected automatic switch and the remote control device is transmitted. Means for sending to the high-voltage coupler, and in the remote control slave station, if the control signal sent from the remote control master station is addressed to the local or remote control slave station, open / close the connected automatic switch. Means for sending an operation command and transmitting a monitoring signal from a connected automatic switch to a remote control master station via a communication cable, and a remote monitoring and control system for distribution lines.