JPS60183564A - Optical current transformer - Google Patents

Abstract

PURPOSE:To hold an optical fiber securely and to apply the optical current transformer even to a gas-insulated conductor by embedding the optical fiber in an insulating spacer which holds a primary conductor. CONSTITUTION:The optical fiber 13 in single mode is embedded in one insulating spacer 7, a single- or plural-turn winding part 13a is formed in the insulating spacer 7 at the periphery of the conductor 6 while both end parts are positioned on the outer surface of the insulating spacer 7, and they are connected to an optical connector 14 provided there. They are further connected to a polarizer and an analyzer through the optical connector 14 to input signals to a photoelectric conversion processor. Thus, the optical fiber 13 is embedded in the insulating spacer 7, so the holding structure of the optical fiber 13 is simplified, the need for a sealing means of gaseous SF6 is eliminated, and this insulating spacer 7 is only mounted as a substitute for a conventional insulating spacer to realize the optical current transformer.

Description

[Detailed description of the invention] This invention
Applies to 1st class・'1. B) The mountain that connects the light 2 to the θ1 vessel.

This optical current transformer is C, double B, as shown in Figure 1. Primary conductor through i]! When a sintered optical fiber 2 is wound around 1, a polarizer 3 is passed through, and a linearly polarized light 1 is passed through an optical fiber 2, a magnetic field is generated by the current. S, the polarization direction is rotated by the two proportional L7, the so-called fur: >-J'', and the primary conductor 1' and the two currents J are detected through the analyzer 4. It was written by Ikugu11.

When applied to high-voltage conductors, etc., mechanical retention of the optical fiber is a problem, and current in conductors in insulated conduits such as substations, etc. is not detected"'
)'Practical use has not progressed due to problems with the pull-out of the fiber-glued part.

The purpose of this invention is to hold optical fibers (l(
, ζ provides an optical current transformer that can be easily applied to a single body.

An embodiment of this invention is illustrated in FIGS. 2 to 5. g
Figure 2 shows the configuration of the iJ filter 31/TL bulk type Kasu shrine opening/closing device in the substation, where 5 is the moon container plate, 6 is the conductor, 7 is the container 5 that holds the conductor 6. 8 is SF, gas, and 9 is breaker,
10 is a disconnector, 11! 12 is a cable connection device.

Now, as shown in FIG. 3 to FIG.
4 L t without forming a turning part 13 r +
” t)l IILI :: B part % + p edge svena 7 outer 21 side, 2 (IV placed; .Soshi 5 - Light -
Polarized light 1'-9 (both shown in the figure, +4-J"') is applied to polarized light 1'-9 through the I connector 14.
11 place ζ two people force Q, -[.

This way, absolute, 2', Be A1. Since the optical fiber 13 is buried in the V, the /zy of the optical fiber 13 is
The closed hand l-) of F Racas is no longer needed, ii'46;z
Conventional method 1. Replacement with spacer, 2. Invention 2.3'
Install the insulating spacer 7 on the J-row, and the 1゛f'' will appear.

More bunches, -)! , the optical current transformer of this invention has 1 di;
L"+': J-'+ 10 different structures can be easily and securely held in place with 1-, and the optical fiber is The drawers are easy to pull out and there is no waste.

It goes without saying that the insulating spacer 7 may be in the form of a post or the like having a partitioning function of 1"l"1xC and holding two conductors.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle of optical transformation z (t, 21st me 1 is the principle diagram of the present invention) 41:ii of a gas insulated switchgear to which 5 embodiments are applied
III old (J1 side view Figure 3; front view of the insulating spacer
ml) is an explanatory diagram thereof. 6...Primary conductor, 7...Insulating spar 4 no, +3.
...Optical fiber Figure 1

Claims (1)

[Claims] 1φ,... Thickness (19 (:31) (19) (19)
．． Embedded in the color edge spacer of 5 and the color edge spacer of 1 and 2; ! I 1. Self] t'<・711 bodies; l
,) When it is wound into a H1° round shape, both ends are attached to the 1 axis, -↓1 outer surface 0. Two frosted light current transformers (1″TI'Ie71).