JPS60141121A - Defect iron tower identifying device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of application in industry This invention relates to the location of a steel tower that has been struck by lightning and caused a follow-on current on a power transmission line, etc., and is particularly applicable to optical fibers. The built-in rack is placed under the land section (hereinafter referred to as (J l) G
The present invention relates to an identification device that utilizes W.

(b) Conventional technology and its problems 0 To identify accidental towers using PGW, as shown in Figure 1, the tower, detector 1, and the emission of an accident information signal with a wavelength unique to each tower are required. A method is known in which a source 2 is installed, the optical signal is multiplexed with optical signals from other towers by an optical multiplexer 4 provided in an opcw 3, and this is transmitted to a central identification "Jff!".

However, while there is a limit to the number of optical fibers that can be housed in an OPCW, there is a large number of steel towers from which information must be collected, and the loss due to optical multiplexers is large. However, there is a problem in that a repeater must be installed in the middle.

OPCW is used for data communication between substations, local resident service information such as CATV, and tower maintenance and operation, so it is expected that the amount of 1 to 2000 yen transmitted by OPCW will increase in the future. Because it will be done, op a w
When using the system, it is necessary to make the system as efficient as possible. However, the above-mentioned accident information signal transmission system cannot necessarily meet these demands.

Therefore, the first object of the present invention is to provide an accident tower identification device that solves the above problem and provides an efficient system.

A second object of the present invention is to improve the identification ability of the identification device.

(/j Means for Solving the Problems - The acetic acid of the invention (hereinafter referred to as the "first invention") that achieves the first object described above is a method of applying 'The commercial flow detection section and the above-mentioned winding section are provided with a drive section that is connected to the section and applies a force in a direction to change the degree of winding, and the drive section is driven by the output of the above-mentioned detection section. .

In addition, inventions that achieve the above second condition +Y;r (hereinafter referred to as
The second invention) is achieved by providing an output holding 'Mr&' that holds the output of the detection part of %1 shot:su for a required period of time, and driving the first driving part through the holding device in the same manner as in IF. This is how it was done.

) First embodiment $2 Figures 1 and 3 show the first embodiment (hereinafter referred to as the first embodiment) of the first invention.
(referred to as an example), and for each tower 10 - (separate equipment l!
11 yen was set up and an OPCW was constructed between 10 steel towers.
It is associated with 12.

The identification J4 holder 11 has a first-rate detection unit 1.3 and a drive unit 14 driven by its output energy, and the winding of the optical fiber 16 drawn out from the opcw 12 via the separation unit 15 is It has a section 17.

This winding and bending portion 17 serves as a stopper with a cup 1B of a required diameter.
The optical fiber 16 is gently wound once around the optical fiber 16, and the arms 19 of the drive unit 14 are connected to both ends of the winding portion 17.

The image moving part 14 is operated by the output energy of the detector 13 from the state in which the two arms 19 are close together (see the dashed line) to the state shown in the solid line. 1 of the optical signal
The loss of 4p is noticeable.

Once upon a time, opcw1 was installed at a monitoring station 20 such as a substation.
Backscattered light measurement device 21 connected to the optical fiber of No. 2
It is possible to detect the location where transmission loss occurs, that is, the point of failure.

FIG. 6 shows an example of measurement data measured by the backscattered light measuring device 20. This data uses a 1200m optical fiber core and approximately 100m
This is a case where a bend with an outer diameter of 7.7 feet was applied at a point far away to simulate a failure point, and a loss of about 2 dB was observed at a point about 100 m away.

(E) Second Embodiment - J The double first invention, as seen from the first embodiment,
Detection is possible only while the fault current continues, and when the fault current disappears, the bend in the winding portion returns to its original state, making detection impossible.

The second invention solves this problem, Q.
The example (hereinafter referred to as the second example) is 419<1
I will explain based on.

This second embodiment includes a fault current detection section 13, a drive section 15 [
and optical fiber 1 pulled out from 011 G~V''1.2
The winding No. 6 has a section 17, which is the same as in the case of the first practical hIL example, but the difference is that an output holding device 22 of the detection section is provided between the detection section 13 and the drive section 14. There is.

This output protection device 22 includes a C
17, a keep relay 24 connected to the converter 23, a timer relay 25 and its contacts 26, and a DC power source 27. The keep relay 24 described above has an excitation winding 28, a hold winding 29 and a make contact 30, and connects the excitation winding 28 to the A, C/DC transformer z3, and also has a meter contact 30.
are connected to the power supply 27 in one row. The holding winding 29 is connected in series with the contact 26 of the timer relay 25, and is connected in parallel with the meter contact 30 and the power supply 2r circuit described in -, and the timer relay 25 is also connected in parallel. There is. Further, the solenoid 31 of the drive device 14 is also connected in parallel.

Therefore, when the keep relay 24 is energized, the timer relay 25 and the solenoid 31 are activated, and
A holding circuit of the keep relay 24 is formed by the operation of the contact 26 of the timer relay 25, and the keep relay 24 continues to operate regardless of the presence or absence of the excitation current of the excitation winding 28 until the timer relay 25 is turned off after a certain period of time. and maintains the solenoid 31 in an activated state.

The drive device 14 is, for example, a movable iron core 32 of a solenoid 31.
A pair of left and right gears 34 are meshed with a rack 33 connected to the rack 33, and the tip of an arm 19 fixed to the center l1lb of the gear 34 is coupled to the optical fiber 16 on the 1ill side of the winding portion 17.

If configured in this manner, the arm 19 acts in a direction to reduce the diameter of the winding portion 17 by the operation of the solenoid ''-31, thereby increasing the transmission loss of the optical fiber 16.

In this case, even if the fault current disappears, the output holding device 22 continues to operate the solenoid 31 for the time set by the timer relay 25.
It is possible to perform 0 to several measurements.

(v) Third Embodiment The $3 embodiment shown in 1 is an embodiment of the second invention, and the specific structure of the output holding device 22 is different from that of the second embodiment. be.

In this case, the output holding device 22 is constructed by connecting a capacitor 36 in parallel to the AC/DC converter 2.3 via a rectifier 35 for stopping the discharge current, and connecting a solenoid 37 in parallel with the capacitor 36. are doing. A piston rod 39 is connected to the movable iron core 38 of the solenoid 37, and the piston rod 339 is embedded in the cylinder 40, and is subjected to a force in the fan return direction by a spring j1.1.

A connecting rod 42 is loosely connected to the piston rod 39, and the other end is connected to the sleeve of one gear 84.
': fixed, the connecting rod 42 is tilted as shown by a single point @ line in accordance with the movement of the piston rod 39, and the arm 19 is actuated by the tilt angle, and the winding is performed in the same manner as in the case described in 111. This is designed to cause a transmission loss of 17 points.

Note that a flow control valve 44 and a reverse check valve 45 are connected in parallel between the chambers on both sides of the piston 43 of the cylinder 40.

The output holding device 22 described above, when a fault current is detected,
Thereafter, the current weighs the capacitor 36, and after the current has disappeared, the solenoid 37 is actuated by the discharge current of the capacitor 36, the piston 43 is pulled out, and the connecting rod 42 is tilted. While the piston 43 is in the pulled-out state, it is possible to carry out several e-settings.

Note that the return time of the piston 43 is adjusted by the 2+ffI adjustment a1) valve 44.

Effects As mentioned above, the first invention is capable of identifying the accident point by changing the degree of bending of the optical fiber, so it can be used in conjunction with the backscattered light measurement system, etc. By doing so, it is possible to transmit the accident information signal of the tower with 0PGWI core, and there is an effect that the accident tower can be detected or MJ is performed with a small amount of signal.

In addition to the above-mentioned effects, the second invention also has the advantage of being able to repeatedly measure the accident point and accurately detect it.

[Brief explanation of the drawing]

11] is a block diagram of a conventional example, FIG. Fig. 3 shows the sakaki of the first embodiment, and Fig. 4 shows the paulownia of the second example. Figure 5 shows a schematic diagram of the third practical example, and Figure 6 shows a graph of experimental results. 10... Steel tower, 11... Identification device, 12... 0PG
W, 13...detection section, 14...1' small movement section, 1 (U...
...Optical fiber, 1゛γ...winding is OIS, 19...
・Arm, 22... Output holding device, 24... Keep relay, 2b... Timer relay, 26... Contact,
27...DC power supply, 3U...Contact, 31...Solenoid, 36...Capacitor, 37...Solenoid, 31
-1...Piston rod, 40...Cylinder, 42
...Connecting rod. Figure 1 Figure 3 Figure 2 Figure 2

Claims (2)

[Claims] (1) A drive unit is provided for each tower, which is connected to the winding part of the optical fiber in the UPGW, the fault current detection part, and the winding part, and applies a force in the direction to change the degree of winding. An accident steel tower identification device characterized in that it moves according to the output of the detection section. (2) The winding of the optical fiber in the steel tower, especially in the OPGW, is connected to the fault current detection part, the output holding device of the detection part, and the winding and bending part, and applies force in the direction to change the degree of winding. 1. An accident steel tower identification device characterized in that a driving section 1≦ is provided, and the j driving section is driven via a double output 1-side holding device. +31 4: Output 1 't3ffj? is constructed by a combination of a keep relay which is fF m+ by the output of the detection part, and a timer relay which starts the operation g1 by the keep relay and returns after the required time has elapsed, and the solenoid constituting the driving part is connected to the keep relay. The accidental tower identification device according to claim 2, wherein the device is connected to a two-source circuit that is opened and closed by the following. ! <11 1=The output holding device described above is connected in parallel to a capacitor connected to the output side of the detection section, and connected in parallel to the capacitor.
Claim 2, comprising a combination of a solenoid connected to the piston and a piston resonder connected to a movable core of the solenoid, and a connecting rod of a driving device is connected to the piston rod of the piston. Accidents described in Section 171. jEach identification device.