JPH1169546A - Monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with the increase in size and complication of a transmission system facility, and make a careful monitoring at low cost by providing a data transmitting section for transmitting image data from a monitoring camera to a center and supplying power to the monitoring camera and the data transmitting section from a power supplying section. SOLUTION: In this system, a current transformer 2 is located on an overhead earth-wire 50. A power supplying section having a stabilizing circuit and a battery is connected to the current transformer 2 and a monitoring camera 3 is located above an iron tower 51. Furthermore, the system has transmitters 4a, 4b as data transmitting sections located above and at the base of the iron tower 51 respectively and has a controlling section for controlling the entire system. The current transformer 2 is a through type one and has a role of taking out induced current in the overhead earth-wire 50. At the secondary side of the current transformer 2, the stabilizing circuit for averaging the taken- out induced current, the battery for charging, and other devices are connected, constituting the power supplying section. The monitoring camera 3 can be remotely controlled by control signals from a center.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring system for monitoring transmission lines and facilities of overhead transmission lines by remote control from a center.

[0002]

2. Description of the Related Art An overhead transmission line constitutes a backbone system of electric power, and maintenance and maintenance of transmission line and facilities are performed by careful patrol, inspection, and monitoring. In the past, maintenance staff had to actually go to the site and visually check for abnormalities, and in some cases, patrol with a helicopter. In some cases, a camera or a weather sensor is installed on a steel tower.

[0003]

However, overhead transmission lines are sometimes installed in remote areas in the mountains, and the installation range is wide. Therefore, a great deal of labor has been imposed on maintenance personnel. Furthermore, as the transmission system equipment becomes larger and more complex,
Detailed patrols, inspections and surveillance are becoming increasingly difficult. In addition, when a camera or a weather sensor is installed on a steel tower, a distribution line is drawn in as a power source for the power source, or a private power generation facility such as a solar cell is required.

Accordingly, the present invention reduces the labor of maintenance personnel,
An object of the present invention is to provide a monitoring system that can cope with an increase in the size and complexity of transmission system equipment and that can perform detailed monitoring at a low cost.

[0005]

Means for Solving the Problems To solve the above-mentioned problems, an invention according to claim 1 is a camera for monitoring power transmission equipment, a current transformer for extracting an induced current flowing through an overhead ground wire, and a current transformer for extracting the induced current. A power supply unit including a storage battery to be charged and a data transmission unit that receives a signal for remotely operating the surveillance camera from the center or transmits image data from the surveillance camera to the center. The power supply of the monitoring camera and the data transmission unit is supplied from the power supply unit.

According to a second aspect of the present invention, in the monitoring system according to the first aspect, the data transmission unit is a mobile phone.

[0007]

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 schematic diagram of the embodiment, and FIG. 2 is a configuration diagram of the embodiment. In the embodiment, a power supply unit 1 having a current transformer 2, a stabilizing circuit 6, a storage battery 7 (not shown in FIG. 1) arranged on an overhead ground wire 50, and a monitoring camera arranged on an upper part of a steel tower 51 3 and transmitters 4a and 4b as data transmission units 4 arranged at the upper part and the base part of the steel tower 51.
And a control unit 5 for controlling the entire system.

The current transformer 2 is a through-type current transformer (see FIG. 1), and plays a role of extracting an induced current flowing through the overhead ground wire 50. The secondary side of the current transformer 2 is connected to a stabilizing circuit 6 for averaging the induced current taken out, a storage battery 7 for charging power, and the like, and constitutes the power supply unit 1.

The surveillance camera 3 includes an ITV camera lens, a camera platform, a motor for rotating the camera platform, and the like mounted on a housing.
The structure allows remote operation. The surveillance camera 3 makes it possible to monitor the state of ice and snow adhered to the transmission line and facilities of the overhead transmission line in winter, the contact of nearby trees, illegal buildings and construction, and the like.

Further, by adding a weather sensor for measuring temperature, humidity, wind speed, etc., a strain sensor, etc., it is possible to measure an abnormal load and an abnormal vibration on a steel tower due to a weather condition, a landslide, and an avalanche. Accident can be prevented beforehand.

A transmitter 4a arranged above the tower 51
Transmits and receives a control signal of the monitoring camera 3. The transmitter 4b disposed below the tower 51 transmits and receives control signals of the monitoring camera 3 to and from the center, and transmits image data from the monitoring camera 3, weather data from the weather sensor, and the like to the center. In the embodiment, the data transmission unit 4 is separated into two (transmitters 4a and 4b) and installed.
However, the present invention is not limited to this, and it may be installed in one place.

As a specific example of the data transmission unit 4, a wireless telephone using a portable telephone is simple. However, in an area where it is difficult to wirelessly communicate with a mobile phone, optical fiber communication is performed using an optical fiber ground wire (OPGW), or another wireless communication such as a satellite line is used.

The control unit 5 controls the entire system such as operating the monitoring camera 3 based on a control signal from the center and transmitting necessary data via the data transmission unit 4 in response to a request from the center. I do.

FIG. 3 is a diagram showing a power use pattern of the power supply unit 1. In the figure, the horizontal axis is time. The vertical axis indicates power consumed by loads such as the monitoring camera 3, the data transmission unit 4, and the control unit 5. The shaded area is the current transformer 2
Shows the power supplied by As is clear from the figure, the frequency of use (time) of the load is relatively small (for example, it is sufficient to perform monitoring several times a day for a short period of time). Therefore, it is advisable to charge the storage battery 7 with power from the current transformer 2 during a time period when the load is not used, and to supply the load power from the charged storage battery 7 when using the load ( (See the arrow in the figure). This is because a low-current transformer can be used as the current transformer 2 and the cost of the monitoring system can be reduced.

[0015]

As described above, according to the first or second aspect of the present invention, it is not possible to completely eliminate the maintenance and maintenance of the transmission line and facilities by the maintenance staff, but the number of patrols, inspections, monitoring, and the like is reduced. And the labor of maintenance personnel can be greatly reduced. In addition, when maintenance personnel go to the site, the local weather and the status of the monitoring target can be grasped in advance,
It can contribute to improvement of work efficiency. Further, the monitoring system of the present invention is low cost and can be implemented in a wide range.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an embodiment.

FIG. 2 is a configuration diagram of an embodiment.

FIG. 3 is a diagram showing a power use pattern of a power supply unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power supply part 2 Current transformer 3 Surveillance camera 4 Data transmission part 4a, 4b transmitter 5 Control part 6 Stabilization circuit 7 Storage battery 50 Overhead ground wire 51 Steel tower

Claims (2)

[Claims] 1. A surveillance camera for monitoring power transmission equipment, a current transformer for extracting an induced current flowing through an overhead ground wire, a power supply unit including a storage battery for charging the induced current, and a signal for remotely controlling the monitored camera. And a data transmission unit for receiving image data from the surveillance camera or transmitting image data from the surveillance camera to the center, and supplying power to the surveillance camera and the data transmission unit from the power supply unit. 2. The monitoring system according to claim 1, wherein the data transmission unit is a mobile phone.