JPH10174231A - Power equipment - Google Patents

Abstract

(57) [Summary] [Problem] To provide an electric power device capable of performing an internal inspection without opening and closing a container such as an installation tank. A camera useful for detecting an internal condition is previously installed in a container of a power device on an outer wall of the container so that a visual inspection of an inspection object can be performed without opening the camera. Use information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to power equipment.

[0002]

2. Description of the Related Art Power equipment used in substations and the like requires periodic internal inspections due to its importance. Ordinary power equipment has a structure covered with a container having a ground potential, and contains an insulating medium such as an insulating gas or insulating oil.
In such an internal inspection of power equipment, a method has been adopted in which the insulating medium is once removed, the container is opened, and then the inspection is performed manually.After the inspection, vacuum processing is performed again,
An insulating medium must be enclosed. That is, it takes a lot of time to process the insulating medium before and after the inspection. Also,
In recent years, the reliability of electric power equipment has been further increased, and the conventional inspection cycle is too short and is being extended.

[0003]

In the prior art, the processing time of the insulating medium before and after the internal inspection is enormous, and there is a problem in selecting an appropriate next inspection.

[0004] It is an object of the present invention to provide a power device which enables internal inspection without treatment of an insulating medium.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention utilizes a camera embedded in an outer wall of a power device for checking the inside of the power device in a container of the power device in advance.

More specifically, the contact portion and the mechanism to be inspected are installed in a closed container. A CCD camera, an infrared camera, and the like are attached to the outer wall of the sealed container at a position where these parts can be observed while the image receiving unit is kept sealed.
The image reception information is checked by being confirmed from outside the sealed container via an external transmission device, display device, or the like.

The present invention is an application of the following operation confirmed at an experimental level to a power device.

(1) It is possible to provide a closed window for the purpose of viewing inside the closed container.

(2) The photographing by the CCD camera from the window of (1) is possible even in a charged environment.

[0010]

FIG. 1 shows an embodiment of the present invention. As an example of a power insulating container, a ground tank 1
1 shows a gas insulated switchgear having an opening / closing section 90 including a conductor 3, a movable section 4 and a contact section 5 supported by an insulating spacer 2 therein, and sealing SF ₆ gas 80 therein. The ground tank 1 has a hand hole 6 for component replacement, and is normally closed by a closing plate 7. An observation hole 8 is provided separately from the hand hole 6, and an acrylic plate 9 is attached using an airtight valve 10. The end of the observation hole 8 is closed by a closing plate 11. A CCD camera 12 is mounted in the observation hole 8 using a mounter 13. CCD camera 12
Is fixed at a position where the opening / closing section 90 can be photographed by the mounter 13. An output terminal 14 from the CCD camera 12 is attached to the outside of the closing plate 7 via a sealing terminal 15. Power supply unit 3 from output terminal 14 via cable 20
0, connected to the monitor 40. By using the power device having such a configuration, the inside of the ground tank 1 can be visually observed without discharging the SF ₆ gas 80. Further, by using an infrared camera instead of the CCD camera 12, it is possible to directly measure the temperature of the conductor and the contact portion.
This enables early local overheating diagnosis with higher accuracy than the conventional indirect local overheating diagnosis by measuring the outside temperature of the grounded tank 1.

[0011]

According to the present invention, the dismantling work which took the most time in the inspection work of the power equipment can be eliminated, and the inspection by open and unified analysis can be performed. The cost per inspection can be greatly reduced, and the inspection can be automated. Further, local overheating diagnosis can be performed more directly than in the past.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a gas-insulated switch showing one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ground tank, 2 ... Insulation spacer, 3 ... Conductor, 4 ... Movable part, 5 ... Contact part, 6 ... Hand hole, 7, 11 ... Closing plate, 8 ... Observation hole, 9 ... Acrylic plate, 10 ... Airtight valve , 12
... CCD camera, 13 ... Mounter, 14 ... Output terminal, 1
5 ... sealed terminal, 20 ... cable, 30 ... power supply part, 40 ...
Monitor, 80: SF ₆ gas, 90: Open / close unit.

Claims (3)

[Claims] 1. A power device characterized in that a high-voltage power device and a measuring camera for inspecting an insulating medium are embedded in an arbitrary number of insulating containers in a power sealed insulating container. 2. The power device according to claim 1, wherein the power supply unit and the display device of the camera are separable from an optical part and are provided outside the insulating container. 3. The power device according to claim 1, wherein the camera uses a visible light receiving device or an infrared receiving device as an optical device.