JP6889095B2 - Power monitoring and control system, power monitoring and control device, program for power monitoring and control device, and power monitoring and control method - Google Patents

Description

The present embodiment relates to a power monitoring control system for monitoring the power system, a power monitoring control device, a program for the power monitoring control device, and a power monitoring control method.

A power monitoring and control system is installed in the power system to provide a stable supply of power. As this type of power monitoring and control system, a power monitoring and control system that displays the status of each power receiving and distribution equipment installed in the power system and the power system is known.

Japanese Unexamined Patent Publication No. 2016-025799 JP-A-2002-233082 JP-A-2000-048969

In order to stably supply electric power, the electric power monitoring and control system detects the status of each power receiving and distribution facility installed in the electric power system and the electric power system, and displays it as system information. System information indicating the status of power receiving and distribution equipment such as switches and circuit breakers in the power system, voltage, current, etc. of the power system is displayed on the power monitoring and control device installed in each area of the power monitoring and control system. It is sequentially stored and displayed as information.

Even when a failure of the power system or the power receiving and distribution equipment is detected, the video information of this power system is stored and displayed in the power monitoring and control device installed for each area of the power monitoring and control system.

However, in the case of a large-scale failure, it is necessary to take countermeasures against the failure based on the video information of the power system in a wide area or the power system related to the power receiving and distribution equipment, and it is stored in the power monitoring control device installed in each area. In some cases, the video information of the power system is not enough.

In addition, the power monitoring and control device installed in each area may be operated unmanned. The power monitoring and control devices installed in each area are installed at separate locations, and it takes a lot of travel time for the operator to directly operate the target power monitoring and control device installed in the distance. It may be necessary.

Therefore, the video information of the power system stored in the power monitoring and control device installed in one area is transferred to the power monitoring and control device installed in the other area by communication. The transfer of video information of the electric power system is performed via a communication line such as the Internet.

However, in communication on a communication line such as the Internet, the amount of data that can be communicated is limited according to the amount of communication occupying the communication line, that is, the so-called traffic situation. Therefore, there is a problem that when the video information of the power system has a data amount exceeding the traffic margin, which is the amount of data that can be communicated, a large delay time may be required for communication.

It is desirable that the recovery from the failure of the power system or the power receiving and distribution equipment be carried out promptly. The large delay time due to this communication causes an unexpected delay in the recovery from the failure of the power system or the power receiving and distribution equipment, which is not desirable.

In particular, when an earthquake occurs, there is a tendency for frequent failures of the power system or power receiving and distribution equipment. Furthermore, when an earthquake occurs, traffic on communication lines such as the Internet tends to be congested, which may limit the amount of data that can be communicated. Even in such a case, it is desirable that the failure of the power system or the power receiving and distribution equipment is quickly restored, and it is desirable that the video information of the power system is transmitted quickly.

The power monitoring and control device displays the video information of the power system on the system monitoring panel composed of the large system display device via the local communication line (LAN) in the power monitoring and control device installed in one area. It is assumed. Therefore, the data size of the video information of the electric power system is large. When video information of a power system with a large data size is communicated via a wide area network, a delay in drawing occurs due to a delay in transmission time due to the large amount of communication, which hinders monitoring and control of the power system. There is a possibility of causing it.

In this embodiment, in order to solve the above problems, a power monitoring control system, a power monitoring control device, a program for the power monitoring control device, and a power monitoring control capable of reducing the delay in the transmission time of the video information of the power system can be reduced. The purpose is to provide a method.

The transmitting side power monitoring and control system of the present embodiment is characterized by having the following configuration.
(1) A first power monitoring and control device having the following configuration.
(1-1) A first communication relay unit connected to a communication line, which observes the traffic of the communication line and transmits / receives data via the communication line.
(1-2) A storage unit that stores video information of the power system of the target area.
(1-3) so that said first amount of data within the traffic margin determined by based on the observed traffic by the communication relay section, the image information stored in the storage unit and data compression A transmission control unit that creates compressed video information, encodes the compressed video information, and transmits the compressed video information to the communication line via the first communication relay unit.

(2) A second power monitoring and control device having the following configuration.
(2-1) A second communication relay unit that is connected to the communication line and transmits / receives data to / from the communication line.
(2-2) A decoding unit that decodes the encoded compressed video information transmitted from the transmission control unit of the first power monitoring control device received via the second communication relay unit. ..
(2-3) A display unit that displays the compressed video information decoded by the decoding unit.
The present embodiment also includes a power monitoring control device, a program for the power monitoring control device, and a power monitoring control method having the above characteristics.

The figure which shows the power monitoring control system which concerns on 1st Embodiment The figure which shows the common configuration of the power monitoring control apparatus which concerns on 1st Embodiment The figure which shows the structure of the transmission side power monitoring control apparatus which concerns on 1st Embodiment The figure which shows the structure of the receiving side power monitoring control apparatus which concerns on 1st Embodiment The figure which shows the structure of the resolution pattern table stored in the receiving side power monitoring control apparatus which concerns on 1st Embodiment. The figure which shows the structure of the input part of the receiving side power monitoring control device which concerns on 1st Embodiment. The figure which shows the program flow of the input part of the receiving side power monitoring control device which concerns on 1st Embodiment. The figure which shows the program flow of the transmission control part of the transmission side power monitoring control apparatus which concerns on 1st Embodiment. The figure which shows the program flow of the decoding part of the receiving side power monitoring control apparatus which concerns on 1st Embodiment. The figure which shows the structure of the data input from the input part of the receiving side power monitoring control device which concerns on another embodiment.

[1. First Embodiment]
[1-1. Constitution]
A power monitoring and control system as an example of the present embodiment will be described with reference to FIGS. 1 to 5. In the present embodiment, as an example, the power monitoring control device 2m is used as a backup device, and the power monitoring control device 2a displays the compressed video information D2 related to the video information D1 stored in the power monitoring control device 2m. Will be described.

(1) Overall configuration of the power monitoring and control system 1 The overall configuration of the power monitoring and control system 1 is shown in FIG. The power monitoring and control system 1 has four power monitoring and control devices 2 (2m, 2a, 2b, 2c). The power monitoring and control devices 2 (2m, 2a, 2b, 2c) are connected to each other via the communication line 9. The power monitoring control device 2m may be referred to as a first power monitoring control device or a transmitting side power monitoring control device, and the power monitoring control device 2a may be referred to as a second power monitoring control device or a receiving side power monitoring control device.

The power monitoring and control devices 2m, 2a, 2b, and 2c may have the same configuration, but the power monitoring and control devices 2m and 2a may have a unique configuration in part as described below. ..

In the present embodiment, when there are a plurality of devices and members having the same configuration, they are given the same number and described, and when each device and member having the same configuration are described, they are common. Distinguish by adding an alphabetical subscript to the number.

The configuration of the power monitoring and control system 1 in which the power monitoring and control devices 2m and 2a have a unique configuration in part will be described below.

In the power monitoring and control system 1, the following data is input, output, transmitted / received, or stored.
Video information D1
(Video information D1a of the power system of the power monitoring and control device 2a)
(Video information D1b of the power system of the power monitoring and control device 2b)
(Video information D1c of the power system of the power monitoring and control device 2c)
Compressed video information D2
(Compressed video information D2a of the power monitoring control device 2a)
(Compressed video information D2b of the power monitoring control device 2b)
(Compressed video information D2c of the power monitoring control device 2c)
Traffic monitoring information T1
Request area command C1
Resolution specification command C2

(Power monitoring and control device 2)
The power monitoring and control device 2 is a device configured by a microcomputer or the like. The power monitoring and control device 2 is installed in a power supply command center, a system control center, a centralized control center, a command room such as a substation, a training room, etc. that monitor and control the power system.

The power monitoring and control device 2 detects the status of each power receiving and distribution facility installed in the power system in the target area and the power system, and displays it as system information. The power monitoring and control device 2 inputs system information indicating the status of power receiving and distribution equipment such as switches and circuit breakers in the power system of the target area, voltage and current of the power system, and sequentially stores the system information as video information of the power system. Display.

The power monitoring and control device 2a receives the status of the power receiving and distribution equipment and the power system from the power receiving and distributing equipment (not shown in the figure) installed in the target area a, and sequentially stores the video information D1a of the power system of the target area a. Display with. Similarly, the power monitoring control device 2b sequentially stores and displays the video information D1b of the power system of the target area b, and the power monitoring control device 2c sequentially stores and displays the video information D1c of the power system of the target area c.

The power monitoring control device 2m is used as a backup device. The power monitoring and control device 2m is the video information D1a stored in the power monitoring and control device 2a, the video information D1b stored in the power monitoring and control device 2b, and the video information stored in the power monitoring and control device 2c via the communication line 9. D1c is sequentially received and stored. Further, in response to the transmission request from the power monitoring control device 2a, the video information D1b and the video information D1c are compressed and transmitted to the power monitoring control device 2a via the communication line 9.

(Power monitoring and control device 2m, 2a, 2b, 2c common configuration)
FIG. 2 shows the configuration of common parts in the power monitoring and control devices 2m, 2a, 2b, and 2c. The power monitoring control device 2 includes a communication relay unit 3, a storage unit 4, a decoding unit 5, a transmission control unit 6, a display unit 7, and an input unit 8. The communication relay unit 3, the storage unit 4, the decoding unit 5, the transmission control unit 6, the display unit 7, and the input unit 8 are connected to the local communication line 11 to transmit and receive each other.

(Communication relay unit 3)
The communication relay unit 3 is a communication device composed of a so-called router. The communication relay unit 3 is composed of a transmission / reception circuit corresponding to a communication line such as the Internet. One of the communication relay units 3 is connected to a communication line 9 such as the Internet, and the other is connected to a local communication line 11 inside the power monitoring and control device 2. The communication relay unit 3 is arranged inside the power monitoring and control device 2, or in a power distribution room or the like in which the power monitoring and control device 2 is installed.

The communication relay unit 3 relays communication between the communication line 9 and the local communication line 11 inside the power monitoring control device 2. Further, the communication relay unit 3 observes the traffic status of the communication line 9.

(Memory unit 4)
The storage unit 4 is a communication device composed of a so-called server. The storage unit 4 is composed of a storage medium such as a semiconductor memory or a hard disk. The storage unit 4 is connected to the local communication line 11 inside the power monitoring control device 2. The storage unit 4 is arranged inside the power monitoring and control device 2, or in a power distribution room or the like in which the power monitoring and control device 2 is installed.

The storage unit 4 stores the video information D1 of the power system based on the system information indicating the state of the power receiving and distribution equipment such as switches and circuit breakers in the power system of the target area, the voltage of the power system, the current, and the like.

(Decoding unit 5)
The decoding unit 5 is a display control device composed of a so-called video decoder. The decoding unit 5 is composed of a microcomputer or the like having a display control circuit. The decoding unit 5 is connected to the local communication line 11 on the input side and to the display unit 7 of the power monitoring control device 2 on the output side. The decoding unit 5 is arranged in the vicinity of the display unit 7 such as a power distribution room.

The decoding unit 5 is a power source encoded and stored in the storage unit 4 based on system information indicating the states of power receiving and distribution equipment such as switches and circuit breakers in the power system of the target area, voltage of the power system, current, and the like. The video information D1 of the system is decoded and displayed on the display unit 7.

(Transmission control unit 6)
The transmission control unit 6 is a control device composed of a so-called video encoder. The transmission control unit 6 is composed of a microcomputer or the like having a transmission / reception circuit. The transmission control unit 6 is connected to the local communication line 11. The transmission control unit 6 is arranged inside the power monitoring control device 2 or in a power distribution room or the like in which the power monitoring control device 2 is installed.

The transmission control unit 6 is an image of the power system based on the system information stored in the storage unit 4 indicating the status of the power receiving and distribution equipment such as switches and circuit breakers in the power system in the target area, the voltage of the power system, the current, and the like. The information D1 is encoded into a signal for the communication line 9 configured by the Internet or the like, and transmitted to the communication line 9 via the communication relay unit 3.

(Display unit 7)
The display unit 7 is a display device composed of a plurality of liquid crystal panels. The display unit 7 is composed of 16 indicators 701 to 716. The display unit 7 is connected to the decoding unit 5. The display unit 7 is installed in the vicinity of the decoding unit 5 arranged in the power distribution room or the like.

The display unit 7 is a power system based on system information decoded by the decoding unit 5 that indicates the status of power receiving and distribution equipment such as switches and circuit breakers in the power system in the target area, voltage of the power system, current, and the like. The video information D1 is displayed.

(Input unit 8)
The input unit 8 is an input device in which an operation unit such as a keyboard and a mouse and a display unit such as a CRT are combined. The input unit 8 is connected to the local communication line 11. The input unit 8 is arranged in the vicinity of the display unit 7 installed in the power distribution room or the like. The input unit 8 is operated by an operator, and various commands are input.

(Local communication line 11)
The local communication line 11 is a communication line provided in a specific area such as a dedicated communication line or an in-house intranet. Data is transmitted and received between the communication relay unit 3, the storage unit 4, the decoding unit 5, the transmission control unit 6, and the input unit 8 by the local communication line 11.

[Configuration unique to power monitoring and control device 2m]
The configuration of the power monitoring control device 2m is shown in FIG. The power monitoring control device 2m has a configuration unique to the transmission control unit 6. The transmission control unit 6m of the power monitoring control device 2m includes a transmission / reception unit 61, a reception unit 62, a storage unit 63, and a control unit 64.

As described above, the transmission control unit 6m is composed of a microcomputer or the like having a transmission / reception circuit. The transmission / reception unit 61, the reception unit 62, the storage unit 63, and the control unit 64 of the transmission control unit 6m are realized by each unit constituting the microcomputer.

(Transmission / reception unit 61)
The transmission / reception unit 61 is composed of a communication port or the like of a microcomputer that constitutes the transmission control unit 6m. The transmission / reception unit 61 is connected to the local communication line 11m. The transmission / reception unit 61 transmits / receives data to / from the communication relay unit 3m via the local communication line 11m. The data transmission / reception operation of the transmission / reception unit 61 is controlled by the control unit 64.

The transmission / reception unit 61 receives the following signals transmitted from the communication relay unit 3m via the local communication line 11m.
Traffic monitoring information T1

The traffic monitoring information T1 includes the following information.
Received traffic T11
Outgoing traffic T12
Received traffic usage rate T13
Outgoing traffic utilization T14
Total usage of inbound and outbound traffic T15
Error rate T16
Disposal rate T17

Further, the transmission / reception unit 61 receives the following signals transmitted from the power monitoring control device 2a via the communication line 9, the communication relay unit 3m, and the local communication line 11m.
Request area command C1
Resolution specification command C2

The request area command C1 is a command for distinguishing the target power monitoring and control devices 2a, 2b, and 2c that request the transmission of the compressed video information D2. The resolution designation command C2 is a command for designating the resolution of the compressed video information D2.

The transmission / reception unit 61 transmits the following signals to the power monitoring control device 2a via the local communication line 11m, the communication relay unit 3m, and the communication line 9.
Compressed video information D2
(Compressed video information D2a of the power monitoring control device 2a)
(Compressed video information D2b of the power monitoring control device 2b)
(Compressed video information D2c of the power monitoring control device 2c)

(Receiver 62)
The receiving unit 62 is composed of a communication port or the like of a microcomputer that constitutes the transmission control unit 6m. The receiving unit 62 is connected to the local communication line 11m. The receiving unit 62 receives data from the storage unit 4m via the local communication line 11m and outputs the data to the control unit 64. The data reception operation of the receiving unit 62 is controlled by the control unit 64.

The receiving unit 62 receives the following signals from the storage unit 4m via the local communication line 11m.
Video information D1
(Video information D1a of the power system of the power monitoring and control device 2a)
(Video information D1b of the power system of the power monitoring and control device 2b)
(Video information D1c of the power system of the power monitoring and control device 2c)

(Memory unit 63)
The storage unit 63 is composed of a hard disk memory, a semiconductor memory, or the like of a microcomputer that constitutes the transmission control unit 6m. The storage operation of the storage unit 63 is controlled by the control unit 64. The storage unit 63 temporarily stores the data received from the storage unit 4m by the receiving unit 62.

The storage unit 63 temporarily stores the following data received from the storage unit 4m by the receiving unit 62.
Video information D1
(Video information D1a of the power system of the power monitoring and control device 2a)
(Video information D1b of the power system of the power monitoring and control device 2b)
(Video information D1c of the power system of the power monitoring and control device 2c)

Further, the storage unit 63 temporarily stores the following data calculated and generated by the control unit 64.
Compressed video information D2
(Compressed video information D2a of the power monitoring control device 2a)
(Compressed video information D2b of the power monitoring control device 2b)
(Compressed video information D2c of the power monitoring control device 2c)

(Control unit 64)
The control unit 64 is composed of a CPU of a microcomputer that constitutes the transmission control unit 6m. The control unit 64 incorporates a computer program described later. The control unit 64 is connected to the transmission / reception unit 61, the reception unit 62, and the storage unit 63. The control unit 64 performs the following calculations and controls on the transmission / reception unit 61, the reception unit 62, and the storage unit 63.

(A1) Control for transmission / reception unit 61 The control unit 64 controls the transmission / reception unit 61 so as to receive the following signals transmitted from the communication relay unit 3m via the local communication line 11m.
Traffic monitoring information T1

As described above, the traffic monitoring information T1 includes the following information.
Received traffic T11
Outgoing traffic T12
Received traffic usage rate T13
Outgoing traffic utilization T14
Total usage of inbound and outbound traffic T15
Error rate T16
Disposal rate T17

Further, the control unit 64 controls the transmission / reception unit 61 so as to receive the following signals transmitted from the power monitoring control device 2a via the communication line 9, the communication relay unit 3m, and the local communication line 11m.
Request area command C1
Resolution specification command C2

Further, the control unit 64 controls the transmission / reception unit 61 so as to transmit the following signals to the power monitoring control device 2a via the local communication line 11m, the communication relay unit 3m, and the communication line 9.
Compressed video information D2
(Compressed video information D2a of the power monitoring control device 2a)
(Compressed video information D2b of the power monitoring control device 2b)
(Compressed video information D2c of the power monitoring control device 2c)

(A2) Control of the receiving unit 62 The control unit 64 controls the receiving unit 62 so as to receive the following signals from the storage unit 4m via the local communication line 11m.
Video information D1
(Video information D1a of the power system of the power monitoring and control device 2a)
(Video information D1b of the power system of the power monitoring and control device 2b)
(Video information D1c of the power system of the power monitoring and control device 2c)

(A3) Control for Storage Unit 63 The control unit 64 controls the storage unit 63 so as to temporarily store the following data received from the storage unit 4m by the reception unit 62.
Video information D1
(Video information D1a of the power system of the power monitoring and control device 2a)
(Video information D1b of the power system of the power monitoring and control device 2b)
(Video information D1c of the power system of the power monitoring and control device 2c)

Further, the control unit 64 controls the storage unit 63 so as to temporarily store the following data generated by the calculation.
Compressed video information D2
(Compressed video information D2a of the power monitoring control device 2a)
(Compressed video information D2b of the power monitoring control device 2b)
(Compressed video information D2c of the power monitoring control device 2c)

(Calculation generation by control unit 64)
The control unit 64 performs the following data calculation and data generation.
(A) Calculation of traffic margin L1 Traffic margin L1 is calculated based on the traffic monitoring information T1.
Traffic margin L1 (%) =
100 (%) -Total usage rate of sent / received traffic T15 (%) ... (Equation 1)

(B) Generation of compressed video information D2 (b1) When the request area command C1 requests the compressed video information D2a of the power monitoring control device 2a:
Based on the traffic margin L1 and the resolution designation command C2, the video information D1a of the power system of the power monitoring control device 2a is converted to generate the compressed video information D2a.

(B2) When the request area command C1 requests the compressed video information D2b of the power monitoring control device 2b:
Based on the traffic margin L1 and the resolution designation command C2, the video information D1b of the power system of the power monitoring control device 2b is converted to generate the compressed video information D2b.

(C) When the request area command C1 requests the compressed video information D2c of the power monitoring control device 2c:
Based on the traffic margin L1 and the resolution designation command C2, the video information D1c of the power system of the power monitoring control device 2c is converted to generate the compressed video information D2c.

(Other parts)
The communication relay unit 3m, the storage unit 4m, the decoding unit 5m, the display unit 7m, the input unit 8m, and the local communication line 11m of the power monitoring control device 2m have the same configuration as the power monitoring control device 2, and the communication relay unit 3 , The same as the storage unit 4, the decoding unit 5, the display unit 7, the input unit 8, and the local communication line 11.

[Configuration unique to power monitoring and control device 2a]
The power monitoring and control device 2a receives the status of the power receiving and distribution equipment and the power system from the power receiving and distributing equipment (not shown in the figure) installed in the target area a via the local communication line 11a, and receives the status of the power receiving and distributing equipment and the power system of the target area a. The video information D1a is sequentially stored in the storage unit 4a and displayed on the display unit 7a.

Further, the power monitoring control device 2a receives the compressed video information D2b related to the video information D1b of the power system of the other target area b from the power monitoring control device 2m and displays it on the display unit 7a. On the display unit 7a, the video information D1a of the power system of the target area a and the compressed video information D2b of the target area b are displayed together. The arrangement of the display of the video information D1a and the compressed video information D2b displayed on the display unit 7a is adjusted by the decoding unit 5a.

The configuration of the power monitoring control device 2a is shown in FIG. The power monitoring control device 2a has a configuration unique to the decoding unit 5a and the input unit 8a. The decoding unit 5a of the power monitoring control device 2a has a storage unit 51. The input unit 8a of the power monitoring control device 2a includes an operation unit 81, a transmission / reception unit 82, and a control unit 83.

(Storage 51)
The storage unit 51 is composed of a storage device such as a hard disk memory or a semiconductor memory provided in the decoding unit 5a. The storage unit 51 is provided in the decoding unit 5a. The storage unit 51 stores the resolution pattern table shown in FIG. The resolution pattern table stored in the storage unit 51 is read out by the input / output unit 8a.

The resolution pattern table is preset in the storage unit 51. The resolution pattern table is a pattern of the following information as shown in FIG.
Resolution of compressed video information D2b Display arrangement of video information D1a and compressed video information D2b

(Input unit 8a)
The input unit 8a is composed of a personal computer or the like. The input unit 8a includes an operation unit 81, a transmission / reception unit 82, and a control unit 83. The operation unit 81, the transmission / reception unit 82, and the control unit 83 are realized by each unit constituting the personal computer.

(Operation unit 81)
As shown in FIG. 6, the operation unit 81 is composed of a device in which an input device 811 such as a keyboard or a mouse is combined with a display device 812 such as a CRT. The operation unit 81 is operated by an operator and is used for selecting the resolution pattern shown in the resolution pattern table. A desired resolution pattern from the resolution pattern table displayed on the display device 812 is selected by the operator using the input device 811.

(Transmission / reception unit 82)
The transmission / reception unit 82 is composed of a communication port or the like of a personal computer constituting the input unit 8a. The transmission / reception unit 82 is connected to the local communication line 11a. The transmission / reception unit 82 transmits / receives data via the local communication line 11a. The data transmission / reception operation of the transmission / reception unit 82 is controlled by the control unit 83.

The transmission / reception unit 82 receives the following data from the storage unit 51 of the decoding unit 5a via the local communication line 11a.
Resolution pattern table

Further, the transmission / reception unit 82 transmits the following signals to the power monitoring control device 2m via the local communication line 11a, the communication relay unit 3a, and the communication line 9.
Request area command C1
Resolution specification command C2

(Control unit 83)
The control unit 83 is composed of a CPU of a personal computer that constitutes the input unit 8a. The control unit 83 incorporates a computer program described later. The control unit 83 is connected to the operation unit 81 and the transmission / reception unit 82. The control unit 83 performs the following calculations and controls on the operation unit 81 and the transmission / reception unit 82.

(B1) Control for Operation Unit 81 The control unit 83 controls the operation unit 81 so that the display device 812 displays the resolution pattern table received from the storage unit 51 of the decoding unit 5a.

Further, the control unit 83 receives the resolution pattern and the request area input from the input device 811 by the operator from the operation unit 81. As the resolution pattern, a desired pattern from the resolution pattern table displayed on the display device 812 is selected by the operator using the input device 811.

(B2) Control of the transmission / reception unit 82 The control unit 83 controls the transmission / reception unit 82 so as to receive the resolution pattern table from the storage unit 51 of the decoding unit 5a via the local communication line 11a.

Further, the control unit 83 controls the transmission / reception unit 82 so as to transmit the following signals to the power monitoring control device 2m via the local communication line 11a, the communication relay unit 3a, and the communication line 9.
Request area command C1
Resolution specification command C2

(Other parts)
The communication relay unit 3a, the storage unit 4a, the transmission control unit 6a, the display unit 7a, the local communication line 11a, and the decoding unit 5a excluding the storage unit 51 of the power monitoring control device 2a have a configuration common to the power monitoring control device 2. , Communication relay unit 3, storage unit 4, transmission control unit 6, display unit 7, local communication line 11, and decoding unit 5.

[1-2. Action]
Next, the operation of the power monitoring control system 1 of the present embodiment will be described with reference to FIGS. 1 to 9.

[O. initial state]
The power monitoring and control device 2a receives the status of the power receiving and distribution equipment and the power system from the power receiving and distributing equipment (not shown in the figure) installed in the target area a, and sequentially stores the video information D1a of the power system of the target area a. It is stored in the unit 4a and displayed on the display unit 7a. Similarly, the power monitoring and control device 2b stores the video information D1b of the power system of the target area b in the sequential storage unit 4b and displays it on the display unit 7b. Further, the power monitoring control device 2c stores the video information D1c of the power system of the target area c in the sequential storage unit 4c and displays it on the display unit 7c.

The power monitoring control device 2m is used as a backup device. The power monitoring control device 2m has video information D1a stored in the storage unit 4a of the power monitoring control device 2a, video information D1b stored in the storage unit 4b of the power monitoring control device 2b, and power monitoring control via the communication line 9. The video information D1c stored in the storage unit 4c of the device 2c is sequentially received and stored in the storage unit 4m.

The resolution pattern table shown in FIG. 5 is preset and stored in the storage unit 51 of the decoding unit 5a of the power monitoring control device 2a. As described above, the resolution pattern table shown in FIG. 5 is a pattern of the following information.
Resolution of compressed video information D2b Display arrangement of video information D1a and compressed video information D2b The resolution of the compressed video information D2b is a numerical value indicating the resolution of the image data of the compressed video information D2b. The display arrangement of the video information D1a and the compressed video information D2b shows the display positions of the video information D1a and the compressed video information D2b on the displays 701a to 716a constituting the display unit 7a.

[A. Operation of power monitoring and control system 1]
As an example, the case where the power monitoring control device 2m is used as a backup device and the power monitoring control device 2a displays the compressed video information D2b related to the video information D1b stored in the power monitoring control device 2m will be described. In the power monitoring and control system 1, in response to an instruction from the power monitoring and control device 2a, the power monitoring and control device 2m compresses the video information D1b stored in the storage unit 4m and uses the compressed video information D2b as the power monitoring and control device 2a. Send to. The transmitted compressed video information D2b is displayed on the display unit 7a of the power monitoring control device 2a.

As described above, the compressed video information D2b, which is the video information of the power system of the power monitoring and control device 2b, is displayed on the display unit 7a of the power monitoring and control device 2a. When the power system of the power monitoring control device 2b is confirmed by an operator near the power monitoring control device 2a, or when the display unit 7b of the power monitoring control device 2b cannot be displayed due to a failure. It is needed when it becomes. The details of the operation of each part of the power monitoring and control system 1 will be described below.

[B. Operation of input unit 8a of power monitoring and control device 2a]
First, in the power monitoring control device 2a, the input unit 8a performs the following operations. The input unit 8a of the power monitoring control device 2a operates according to the program shown in FIG. 7. The operation of the power monitoring control device 2a will be described below with reference to the program shown in FIG. The program shown in FIG. 7 is built in the control unit 83 of the input unit 8a. The program shown in FIG. 7 is repeatedly executed by the control unit 83.

(Step R01: Receive the resolution pattern table)
The control unit 83 receives the resolution pattern table from the storage unit 51 of the decoding unit 5a via the local communication line 11a by the transmission / reception unit 82. The resolution pattern table is preset and stored in the storage unit 51. As described above, the resolution pattern table is a pattern of the following information.
Resolution of compressed video information D2b Display arrangement of video information D1a and compressed video information D2b

(Step R02: Display the resolution pattern table)
Next, the control unit 83 displays the resolution pattern table received in step R01 on the display device 812 of the operation unit 81.

(Step R03: Determine if the resolution pattern and request area have been entered)
Next, the control unit 83 determines whether the resolution pattern and the request area have been input from the input device 811 of the operation unit 81. The resolution pattern is selected and input by the operator using the input device 811 based on the resolution pattern table displayed on the display device 812. The request area is a code for distinguishing the power monitoring control devices 2a, 2b, and 2c for which the transmission of the compressed video information D2 is requested, and is input by an operator using the input device 811.

When it is determined that the resolution pattern and the request area have been input (YES in step R03), the control unit 83 receives the input resolution pattern and the request area from the operation unit 81, and proceeds to step R04. If it is not determined that the resolution pattern and the request area have been input (NO in step R03), the process proceeds to step R01, and the resolution pattern and the request area are waiting for input.

(Step R04: Send request area command C1 and resolution specification command C2)
When it is determined in step R03 that the resolution pattern and the request area have been input, the control unit 83 creates the resolution designation command C2 based on the input resolution pattern. Further, the control unit 83 creates the request area command C1 based on the input request area. The control unit 83 transmits the request area command C1 and the resolution designation command C2 to the power monitoring control device 2m via the local communication line 11a, the communication relay unit 3a, and the communication line 9 by the transmission / reception unit 82.

For example, the operator inputs the area b of the power system related to the power monitoring and control device 2b as the request area. As a result, the request area command C1 requests the compressed video information D2b of the power monitoring control device 2b. Further, for example, based on the resolution pattern table shown in FIG. 5, the operator sets the resolution as "resolution of compressed video information D2b: 5760 x 2160, resolution of video information D1a as resolution of 9600 x 2160", and arranges the display as "compressed video information D2b". Pattern 3 indicating "display position: 6 surfaces of indicators 701a to 706a, display position of video information D1a: 10 surfaces of 707a to 716a" is input. As a result, the resolution specification command C2 specifies the pattern 3.

[C. Operation of transmission control unit 6m of power monitoring control device 2m]
The power monitoring control device 2m creates compressed video information D2b by compressing the video information D1b of the power system of the power monitoring control device 2b stored in the storage unit 4m based on the traffic observed by the communication relay unit 3m. The compressed video information D2b is encoded and transmitted to the power monitoring control device 2a via the communication relay unit 3m and the communication line 9.

If the amount of data compressed based on the resolution specification command C2 transmitted from the power monitoring control device 2a is within the traffic margin L1 calculated based on the traffic observed by the communication relay unit 3m, it is compressed. The video information D2b is created by compressing the video information D1b based on the resolution designation command C2.

On the other hand, when the amount of data compressed based on the resolution designation command C2 transmitted from the power monitoring control device 2a exceeds the traffic margin L1 calculated based on the traffic observed by the communication relay unit 3m. , The compressed video information D2b is created by compressing the video information D1b so that the amount of data is within the traffic margin L1.

The details of the operation of the power monitoring control device 2m will be described below. In the power monitoring control device 2m, the transmission control unit 6m performs the following operations. The transmission control unit 6m of the power monitoring control device 2m operates according to the program shown in FIG. The program shown in FIG. 8 is built in the control unit 64 of the transmission control unit 6m. The program shown in FIG. 8 is repeatedly executed by the control unit 64.

(Step S01: Determine whether the request area command C1 and the resolution specification command C2 have been received)
The control unit 64 determines whether the transmission / reception unit 61 has received the request area command C1 and the resolution designation command C2 from the power monitoring control device 2a via the communication line 9, the communication relay unit 3 m, and the local communication line 11 m.

When it is determined that the request area command C1 and the resolution specification command C2 have been received (YES in step S01), the process proceeds to step S02. If it is not determined that the request area command C1 and the resolution specification command C2 have been received (NO in step S01), the process proceeds to step S01 again, and the request area command C1 and the resolution specification command C2 are waiting to be received.

(Step S02: Receive the video information D1b specified by the request area command C1)
When it is determined in step S01 that the request area command C1 and the resolution designation command C2 have been received, the control unit 64 is designated by the request area command C1 from the storage unit 4m via the local communication line 11 by the reception unit 62. The video information D1b of the power system of the power monitoring and control device 2b is received.

(Step S03: Store the video information D1b)
Next, the control unit 64 temporarily stores the video information D1b of the power system of the power monitoring control device 2b received in step S02 in the storage unit 63.

(Step S04: Traffic monitoring information T1 is received from the communication relay unit 3m)
Next, the control unit 64 receives the traffic monitoring information T1 from the communication relay unit 3m via the local communication line 11 by the transmission / reception unit 61. The traffic monitoring information T1 is a signal indicating a congestion status of the communication signal of the communication line 9. As described above, the traffic monitoring information T1 includes the following information.
Received traffic T11
Outgoing traffic T12
Received traffic usage rate T13
Outgoing traffic utilization T14
Total usage of inbound and outbound traffic T15
Error rate T16
Disposal rate T17

(Step S05: Calculate traffic margin L1)
Next, the control unit 64 calculates the traffic margin L1 based on the traffic monitoring information T1 received in step S04. The traffic margin L1 is calculated by the following (Equation 1).
Traffic margin L1 (%) =
100 (%) -Total usage rate of sent / received traffic T15 (%) ... (Equation 1)

(Step S06: It is determined whether the amount of data compressed based on the resolution specification command C2 is within the traffic margin L1).
Next, when the control unit 64 compresses the video information D1b of the power system of the power monitoring control device 2b based on the resolution designation command C2 received in step S02, the data of the compressed video information D2b which is the amount of data after compression. It is determined whether the amount of data is within the traffic margin L1 calculated in step S05.

When it is determined that the amount of data after compression is within the traffic margin L1 (YES in step S06), the process proceeds to step S07. If it is not determined that the amount of data after compression is within the traffic margin L1 (NO in step S06), the process proceeds to step S08.

(Step S07: Compress the video information D1b based on the resolution specification command C2)
When it is determined in step S06 that the amount of data after compression is within the traffic margin L1, the video information D1b of the power system of the power monitoring control device 2b is compressed based on the resolution specification command C2 to monitor the power. The compressed video information D2b of the control device 2b is generated.

(Step S08: Compress the video information D1b based on the traffic margin L1)
If it is not determined in step S06 that the amount of data after compression is within the traffic margin L1, the amount of data after compression is set to be within the traffic margin L1 calculated in step S05. The video information D1b of the power system of the power monitoring and control device 2b is compressed, and the compressed video information D2b of the power monitoring and control device 2b is generated.

(Step S09: Compressed video information D2b is encoded and temporarily stored in the storage unit 63)
Next, the control unit 64 encodes the compressed video information D2b generated in step S07 or step S08 into a data format corresponding to the communication line 9. The encoded compressed video information D2b is temporarily stored in the storage unit 63.

(Step S10: Compressed video information D2b is transmitted)
Next, the control unit 64 powers the compressed video information D2b encoded in step S09 and temporarily stored in the storage unit 63 from the transmission / reception unit 61 via the local communication line 11 m, the communication relay unit 3 m, and the communication line 9. It is transmitted to the monitoring control device 2a.

[D. Operation of decoding unit 5a of power monitoring and control device 2a]
Next, in the power monitoring control device 2a, the decoding unit 5a performs the following operations. The decoding unit 5a of the power monitoring control device 2a operates according to the program shown in FIG. The program shown in FIG. 9 is built in the decoding unit 5a. The program shown in FIG. 9 is repeatedly executed by the decoding unit 5a.

(Step R11: Determine whether the compressed video information D2b is received from the power monitoring control device 2m)
The decoding unit 5a of the power monitoring control device 2a determines whether or not the compressed video information D2b has been received from the power monitoring control device 2m. The compressed video information D2b, which is the compressed data of the video information D1b of the power system of the power monitoring control device 2b, is the communication line 9 from the power monitoring control device 2m, the communication relay unit 3a of the power monitoring control device 2a, and the local communication line 11a. Is transmitted to the decoding unit 5a via.

When it is determined that the compressed video information D2b has been received (YES in step R11), the process proceeds to step R12. If it is not determined that the compressed video information D2b has been received (NO in step R11), the process proceeds to step R11 again, and the compressed video information D2b is waiting for reception.

(Step R12: It is determined whether the compressed video information D2b is compressed based on the resolution specification command C2).
When it is determined in step R11 that the compressed video information D2b has been received, the decoding unit 5a determines whether the compressed video information D2b received in step R11 is compressed based on the resolution designation command C2.

When it is determined that the compressed video information D2b is compressed based on the resolution designation command C2 (YES in step R12), the process proceeds to step R13. If it is not determined that the compressed video information D2b is compressed based on the resolution designation command C2 (NO in step R12), the process proceeds to step R14.

(Step R13: Decrypt the compressed video information D2b based on the resolution specification command C2)
When it is determined in step S12 that the compressed video information D2b is compressed based on the resolution designation command C2, the decoding unit 5a decodes the compressed video information D2b based on the resolution designation command C2.

(Step R14: Decrypt the compressed video information D2b based on the compressed compression ratio)
If it is determined in step S12 that the compressed video information D2b is not compressed based on the resolution designation command C2, the decoding unit 5a decodes the compressed video information D2b based on the compressed compression ratio. If it is determined in step S12 that the compressed video information D2b is not compressed based on the resolution specification command C2, the compressed video information D2b has a traffic margin in step S08 of the transmission control unit 6 m of the power monitoring control device 2 m. It is compressed based on degree L1. The decoding unit 5a decodes the compressed video information D2b based on the compressed compression ratio.

(Step R15: Receives video information D1a from the storage unit 4a)
Next, the decoding unit 5a receives the video information D1a of the power system of the power monitoring and control device 2a from the storage unit 4a. The video information D1a is the video information of the power system of the power monitoring and control device 2a at its own location, and is not compressed.

(Step R16: Compressed video information D2b and video information D1a are displayed on the display unit 7a)
Next, the decoding unit 5a displays the video related to the compressed video information D2b decoded in step R13 or step R14 and the video related to the video information D1a received from the storage unit 4a in step R15 to the display unit 7a. Display it. The video related to the compressed video information D2b and the video related to the video information D1a are displayed together with the display unit 7a.

The video related to the compressed video information D2b and the video related to the video information D1a are displayed according to the display arrangement of the video information D1a and the compressed video information D2b in the selected resolution pattern table.

After that, the power monitoring and control device 2m and the power monitoring and control device 2a end a series of programs.

The above is the operation of the power monitoring and control system 1. As described above, the display unit 7a of the power monitoring control device 2a includes the method of the video related to the compressed video information D2b of the power monitoring control device 2b and the method of the video related to the video information D1a of the power system of the power monitoring control device 2a. Is displayed.

[1-3. effect]
(1) According to the present embodiment, the power monitoring and control device 2m compresses the video information D1 of the power system of the target area stored in the storage unit 4m based on the traffic observed by the communication relay unit 3m. The power monitoring control device 2a includes a transmission control unit 6m that creates compressed video information D2, encodes the compressed video information D2, and transmits the compressed video information D2 to the communication line 9 via the communication relay unit 3m. A decoding unit 5a that decodes the encoded compressed video information D2 transmitted from the transmission control unit 6m of 2 m, and a display unit 7a that displays the compressed video information D2 decoded by the decoding unit 5a. It is possible to provide a power monitoring and control system 1, a power monitoring and control device 2, a program for the power monitoring and control device, and a power monitoring and control method that can reduce the delay in the transmission time of video information of the power system.

The compressed video information D2 is created by compressing the video information D1 so that the amount of data is within the traffic margin L1 calculated based on the traffic observed by the communication relay unit 3m. Therefore, it is possible to reduce the amount of communication occupying the communication line 9 from becoming excessive, and it is possible to reduce the delay in the transmission time of the video information D1 of the power system.

(2) The power monitoring and control device 2a transmits the input unit 8a into which the resolution of the compressed video information D2 is input and the input resolution to the communication line 9 via the communication relay unit 3a, and the power monitoring and control device 2a of the power monitoring and control device 2a. , The communication relay unit 3m receives the resolution transmitted to the communication line 9, and when the data in which the video information D1 is compressed based on this resolution is within the traffic margin L1, the transmission control unit 6m is set to the resolution. Based on this, the video information D1 of the power system in the target area is data-compressed to create the compressed video information D2, and the compressed video information D2 is encoded and transmitted to the power monitoring control device 2a via the communication line 9.

Therefore, the compressed video information D2 to be transmitted has a data amount within the traffic margin L1 and has a resolution desired by the operator. As a result, it is possible to reduce the amount of communication occupying the communication line 9 from becoming excessive, and it is possible to reduce the delay in the transmission time of the video information D1 of the power system.

(3) A command for designating a target area among the power systems of a plurality of areas is input to the input unit 8a of the power monitoring control device 2a and transmitted to the power monitoring control device 2m to be transmitted to the power monitoring control device 2m. The storage unit 4m stores the video information D1 of the power system of a plurality of areas, and the transmission control unit 6m data-compresses and compresses the video information D1 of the power system of the target area among the power systems of the plurality of areas. Since the video information D2 is created, encoded, and transmitted to the power monitoring and control device 2a via the communication line 9, the operator does not move and uses the display unit 7a of one power monitoring and control device 2a to display power systems at a plurality of locations. Can be confirmed in the compressed video information D2. As a result, it is possible to reduce the travel time of the worker when inspecting the power system.

[2. Other embodiments]
Although embodiments including modifications have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof. The following is an example.

(1) In the above embodiment, the resolution pattern table in which the resolution of the compressed video information D2b and the display arrangement of the video information D1a and the compressed video information D2b are patterned is stored in the decoding unit 5a of the power monitoring control device 2a. For the input of the resolution to the input unit 8a by the operator, which is preset in 51, a desired resolution pattern from the resolution pattern table displayed on the display device 812 is selected by the operator using the input device 811. It was a thing.

However, the method of inputting the resolution to the input unit 8a is not limited to this. The method of inputting the resolution pattern to the input unit 8a may be as follows. For example, the resolutions of the video information D1a and the compressed video information D2b, or the display arrangement of the video information D1a and the compressed video information D2b can be arranged by the operator directly numerically as shown in FIG. 10A or in FIG. As shown in (b), any part of the image of the indicators 701a to 716a displayed on the display device 812 is pointed out by the input device 811 such as a mouse, so that the information is input to the operation unit 81 of the input unit 8a. You may do so.

In step R04, the control unit 83 of the input unit 8a of the power monitoring control device 2a determines the resolution of the input video information D1a and the compressed video information D2b, or the display arrangement of the video information D1a and the compressed video information D2b. The resolution designation command C2 is created based on such information, and the request area command C1 and the resolution designation command C2 are transmitted to the power monitoring control device 2m.

With this configuration, the operator can use any video information regardless of the preset resolution of the compressed video information D2b and the display arrangement pattern of the video information D1a and the compressed video information D2b. It is possible to set the resolution of D1a and the compressed video information D2b, or the display arrangement of the video information D1a and the compressed video information D2b.

(2) In the above embodiment, the power monitoring and control system 1 has four power monitoring and control devices 2 (2m, 2a, 2b, 2c), but the number of power monitoring and control devices 2 is limited to this. I can't. Further, although the power monitoring control device 2m is used for backup, the power monitoring control device 2m may always perform power monitoring control of the target area.

(3) In the above embodiment, each part constituting the power monitoring control device 2 is defined as a part configured inside the power monitoring control device 2, but the configuration of each part is not limited to this. Each part constituting the power monitoring control device 2 may be composed of a single device.

(4) In the above embodiment, the communication relay unit 3 is configured by a router compatible with the Internet, but the communication relay unit 3 is not limited to this. The communication relay unit 3 may be compatible with, for example, wireless radio waves or optical communication.

(5) In the above embodiment, the display unit 7 is composed of 16 indicators 701 to 716, but the type and number of indicators are not limited to this. For example, the display unit 7 may be configured by a plasma display. Further, the display unit 7 may be composed of a number of displays larger than or a number of 16 or less.

(6) In the above embodiment, the transmission / reception unit 61, the reception unit 62, the storage unit 63, and the control unit 64 of the transmission control unit 6m are assumed to be uniquely possessed by the power monitoring control device 2m, but the power monitoring control The devices 2a, 2b, and 2c may have these configurations.

(7) In the above embodiment, the transmission / reception unit 61, the reception unit 62, the storage unit 63, and the control unit 64 of the transmission control unit 6 m may be realized by the hardware of the microcomputer or by software. It may be what is done. For example, the transmission control unit 6 may be a microcomputer whose function is expanded by a card slot.

(8) In the above embodiment, the storage unit 51 of the decoding unit 5a, the operation unit 81 of the input unit 8a, the transmission / reception unit 82, and the control unit 83 are assumed to be uniquely possessed by the power monitoring control device 2a. , Power monitoring and control devices 2m, 2b, and 2c may have these configurations.

(9) In the above embodiment, the case where the compressed video information D2b of the power monitoring control device 2b is displayed on the display unit 7a of the power monitoring control device 2a has been described, but instead of this, the display of the power monitoring control device 2a The compressed video information D2c of the power monitoring control device 2c may be displayed on the unit 7a. Further, a plurality of compressed video information D2b and D2c may be displayed on the display unit 7a of the power monitoring control device 2a.

(10) In the above embodiment, the traffic margin L1 is calculated based on the total usage rate T15 of the transmitted / received traffic, but the calculation method of the traffic margin L1 is not limited to this. The traffic margin L1 may be calculated by, for example, the following (Equation 2).
Traffic margin L1 (%) =
100 (%) -Total utilization of inbound and outbound traffic T15 (%)
-Error rate T16 (%) -Disposal rate T17 (%) ... (Equation 2)

1 ... Power monitoring and control system 2, 2a, 2b, 2c, 2m ... Power monitoring and control device 3, 3a, 3m ... Communication relay unit 4, 4a, 4m ... Storage unit 5, 5a, 5m ... Decoding unit 6, 6a, 6m ... Transmission control unit 7, 7a, 7m ... Display unit 8, 8a, 8m ... Input unit 9 ... Communication line 11, 11a, 11m ... -Local communication line 51 ... Storage unit 61 ... Transmission / reception unit 62 ... Reception unit 63 ... Storage unit 64 ... Control unit 81 ... Operation unit 82 ... Transmission / reception unit 83 ... Control units 701 to 706, 701a to 706a, 701m to 706m ... Display 811 ... Input device 812 ... Display

Claims (12)

A first communication relay unit that is connected to a communication line, observes traffic on the communication line, and transmits / receives data via the communication line.
A storage unit that stores video information of the power system in the target area,
Such that the data amount within the traffic margin determined by based on the observed traffic by the first communication relay section, create a compressed image information the image information stored in the storage unit and data compression A transmission control unit that encodes the compressed video information and transmits the compressed video information to the communication line via the first communication relay unit.
The first power monitoring and control device having
A second communication relay unit that is connected to the communication line and transmits / receives data via the communication line.
A decoding unit that decodes the compressed video information transmitted from the transmission control unit of the first power monitoring and control device received via the second communication relay unit.
A display unit that displays the compressed video information decoded by the decoding unit, and
A second power monitoring and control device with
Power monitoring and control system equipped with. The second power monitoring and control device is
It has an input unit into which the resolution of the compressed video information is input.
The second communication relay unit the resolution inputted by the input unit, and transmitted via the communication line,
Of the first power monitoring and control device
The first communication relay unit receives the resolution transmitted to the communication line and receives the resolution.
When the data obtained by compressing the video information based on the resolution is within the margin of the traffic, the transmission control unit compresses the video information of the power system in the target area based on the resolution and compresses the compressed video information. Is created, the compressed video information is encoded and transmitted to the communication line via the first communication relay unit.
When the data obtained by compressing the video information based on the resolution exceeds the margin of the traffic, the transmission control unit compresses the video information of the power system in the target area based on the margin of the traffic. Compressed video information is created, the compressed video information is encoded and transmitted to the communication line via the first communication relay unit.
The power monitoring and control system according to claim 1. Of the second power monitoring and control device
A command for designating a target area among the power systems of a plurality of areas is input to the input unit.
The second communication relay unit transmits the command via the communication line.
Of the first power monitoring and control device
The storage unit stores video information of power systems in a plurality of areas, and stores the video information.
Based on the command received via the first communication relay unit, the transmission control unit obtains the video information of the power system of the target area among the power systems of the plurality of areas stored in the storage unit. Data is compressed to create compressed video information, and the compressed video information is encoded and transmitted to the communication line via the first communication relay unit.
The power monitoring and control system according to claim 2. The first communication relay unit, the storage unit, and the transmission control unit of the first power monitoring and control device are connected via a local area network.
The second communication relay unit and the decoding unit of the second power monitoring and control device are connected via a local area network.
The power monitoring and control system according to any one of claims 1 to 3. A communication relay unit that is connected to a communication line, observes the traffic of the communication line, and transmits / receives data via the communication line.
A storage unit that stores video information of the power system in the target area,
The such that the data amount within the traffic margin determined by based on the observed traffic by the communication relay unit creates a compressed video information the image information stored in the storage unit and data compression, the a transmission control section for transmitting to said communication line compressed video information through a pre Symbol communications relay unit is encoded,
Transmitter power monitoring and control device. The communication relay unit receives the resolution transmitted from the receiving side power monitoring control device to the communication line, and receives the resolution.
When the data obtained by compressing the video information based on the resolution is within the margin of the traffic, the transmission control unit compresses the video information based on the resolution to create the compressed video information. the compressed video information through a pre Symbol communications relay unit is encoded and transmitted to the communication line,
When the data obtained by compressing the video information based on the resolution exceeds the margin of the traffic, the transmission control unit compresses the video information of the power system in the target area based on the margin of the traffic. Compressed video information is created, the compressed video information is encoded and transmitted to the communication line via the communication relay unit.
The power monitoring and control device on the transmitting side according to claim 5. The storage unit stores video information of power systems in a plurality of areas, and stores the video information.
The communication relay unit receives a command transmitted from the receiving side power monitoring control device to the communication line to specify a target area among the power systems of the plurality of areas as a designated area.
The transmission control unit, based on the command, wherein the image information of the power system of the stored in the storage unit the designated area and to data compression to create a compressed video information, prior to encoding the compressed video information recording be transmitted to the communication line via the communication relay section,
The power monitoring and control device on the transmitting side according to claim 5 or 6. The input section where the resolution of the video information of the power system of the target area is input, and
The resolution of the image information of the power system of the target area input to the input unit, transmits to the transmission side power monitoring control device via a communication line, was determined based on the traffic of the resolution or the communication line traffic A communication relay unit that receives compressed video information of the power system compressed and encoded so that the amount of data is within the margin from the transmission side power monitoring and control device via the communication line.
A decoding unit that decodes the compressed video information received by the communication relay unit, and a decoding unit.
A display unit that displays the compressed video information decoded by the decoding unit, and
Receiving side power monitoring and control device. The resolution of the video information of the power system of the target area is input from the input unit by at least one of the resolution of the compressed video information and the display arrangement of the compressed video information and the video information applied to the receiving side power monitoring control device.
The receiving side power monitoring control device according to claim 8. The compressed video information decoded by the decoding unit and the video information related to the receiving side power monitoring control device are displayed on the display unit.
The receiving side power monitoring control device according to claim 8 or 9. A first step of monitoring traffic on the communication line by the connected communication relay unit to a communication line, the data amount within the traffic margin determined by based on the observed traffic in the first step The second step of data-compressing the video information of the power system of the target area stored in the storage unit to create the compressed video information,
A third step of encoding the compressed video information created in the second step and transmitting the compressed video information to the communication line via the communication relay unit.
A program for a power monitoring and control device on the transmitting side. The first procedure of observing the traffic of the communication line by the communication relay unit connected to the communication line, and
The first step so that the data amount within the traffic margin determined by based on the observed traffic in, compressed video image information of the power system of the target area stored in the storage unit and data compression The second step of creating information and
A third procedure of encoding the compressed video information created in the second procedure and transmitting the compressed video information to the communication line via the communication relay unit.
Transmitter power monitoring control method.

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