RU2645774C1 - Device for diagnostics of overhead power lines - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: invention relates to power engineering and is intended for diagnosing the state and spatial position of the following elements: overhead protection cable, power cables, support structure elements, suspension clamp and anchor fasteners of overhead protection cable, insulator fasteners, insulator strings, vibration dampers and other equipment. Device for the diagnosis of overhead power lines includes a helicopter-type aircraft, a control system, control blocks of overhead power lines and a power supply, a moving means, located in the body and consisting of an engine connected to the running rollers, and a pressure roller with a drive, which serves to press the cable being examined to the running rollers, and guides that facilitate the alignment of the running rollers with the cable being examined. Axle in the middle of the body is installed. It passes through the walls of the body and through the fork that encloses the body. In the upper part of the fork the guides and the aircraft are fixed.

EFFECT: when the cable being examined is deviated from the horizontal by plus or minus 30 degrees, the center of gravity of the entire device does not deviate from its stable vertical position.

7 cl, 6 dwg

Description

The invention relates to the electric power industry and is intended for diagnosing the state and spatial position of the following elements: lightning protection cable, power wires, structural elements of a support, suspension clamp and anchor fastening of a lightning protection cable, fasteners of insulators, a string of insulators, vibration dampers, and other equipment.

A similar device for diagnosing overhead power lines is known, consisting of a robot moving near and along overhead power lines through a lightning protection cable or power wire, controlling the movement of a device for diagnosing overhead power lines along overhead power lines using a drive system, controlling the operation of overhead line monitoring devices power transmission [CN 102317040, IPC B25J 13/08; BKK 16/00, 02/10/2011].

A similar device for diagnosing overhead power lines is known, which comprises a control system, a set of sensors for detecting the status of power lines and the self-propelled diagnostic device moving along overhead power lines and through their supports a drive system and a capture device [JP 2012257372, IPC H02G 1/02 , 06/08/2011].

The disadvantage of these devices is the inability to conduct diagnostics in the absence of special equipment necessary to place the device for diagnosing overhead power lines on a lightning protection cable, for example, a crane or to overcome anchor supports where the direction of the lightning protection cable changes to a certain angle.

A similar device for diagnosing overhead power lines is known, which contains a control system, overhead power line monitoring devices connected to a battery, housed in a housing and connected to a motor drive system, configured to fix the position of the device for diagnostics relative to a lightning protection cable or power wire and provide its movement along and near overhead power lines. Moreover, the device for diagnosing overhead power lines contains a helicopter-type aircraft connected to the battery, including a control system and attached to the body from the outside [US 20060114122, IPC H04Q 9/00, H02G 1/02, 05/15/2003].

However, this similar device has such a drawback as the complexity of the initial installation of the device on a lightning protection cable or power wire due to the lack of elements that provide the path of the lightning protection cable or power wire, respectively, inside the diagnostic device.

The closest device of the same purpose to the claimed invention in terms of features is a device for diagnosing overhead power lines, comprising a helicopter-type aircraft, a control system, control units for overhead power lines and a power source, a moving means located in the housing, consisting of an engine associated with running rollers, and a pressure roller with a drive, which serves to press the test cable to the running rollers, while on the sides of the housing are fixed razvivayuschie, facilitating the combination of running rollers with the studied cable [RU 2558002, IPC G01R 31/08, 07/27/2015]. This device is taken as a prototype.

The disadvantage of the prototype is that on inclined surfaces the entire device becomes at an angle to the horizontal, and the center of gravity tends to take a stable position, which can contribute to the separation of the lower running roller from the studied cable.

The technical result consists in the fact that when the test cable deviates from the horizontal by plus or minus 30 degrees, the center of gravity of the entire device does not deviate from its stable vertical position.

The specified technical result is achieved by the fact that in the proposed device for the diagnosis of overhead power lines containing a helicopter type aircraft, a control system, control units for overhead power lines and a power source located in the housing means of movement, consisting of an engine connected to the running rollers, and clamping a roller with a drive used to press the test cable to the running rollers, guides facilitating the combination of running rollers with the studied cable, especially awn is that in the middle of the housing is installed the axis passing through the housing wall and surrounding the plug body, the upper parts of which are fixed the guides and the device of the helicopter type.

Additionally, the claimed device is characterized by the fact that the guides in the region of oscillation of the housing are made along an arc of a circle, the center of which coincides with the axis of oscillation of the housing

Additionally, the claimed device is characterized in that the guides of the wide part of the alignment are deployed in a diagonal direction.

Additionally, the claimed device is characterized in that the guides are provided with horizontal sections.

Additionally, the claimed device is characterized in that the guides are provided with crossbars for creating rigidity and placing research equipment on them, for example, power sources.

Additionally, the claimed device is characterized in that the guides in its narrow part are made rectilinear.

Additionally, the claimed device is characterized in that the plane of movement of the pinch roller is placed at an angle, for example, 90 degrees to the test cable.

In the study of the distinguishing features of the described device for the diagnosis of overhead power lines, no similar known solutions were found to maintain the vertical placement of the center of gravity when the tilt angle of the studied cable changes, which indicates the presence of a causal relationship between the set of essential features given in the claims, and the above technical result. This proves the materiality of the features of the claims.

The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources of information, and the identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features that are identical (identical) to all the essential features of the claimed invention. The definition from the list of identified analogues of the prototype, as the closest in the set of essential features of the analogue, allowed to identify the set of essential distinguishing features in relation to the applicant's technical result in the claimed device set forth in the claims.

Therefore, the claimed invention meets the condition of "novelty."

To verify the conformity of the claimed invention with the condition "inventive step", the applicant conducted an additional search for known solutions in order to identify signs that match the distinctive features of the claimed device from the prototype. The search results showed that the claimed invention does not derive explicitly from the prior art for a specialist, since the influence of the transformations provided for by the essential features of the claimed invention on the achievement of a technical result is not revealed from the prior art determined by the applicant, in particular, the following transformations are not provided for by the claimed invention:

- the creation of a tool consisting of known parts, the choice of which and the relationships between them are based on known rules, recommendations, and the technical result achieved in this case is due only to the known properties of the parts of this tool and the relationships between them.

Therefore, the claimed invention corresponds to the level of "inventive step".

The invention is illustrated by drawings, where

FIG. 1 is a projection of a device for diagnosing overhead power lines (left view);

FIG. 2 - view along AA;

FIG. 3 - view of BB;

FIG. 4 is a top view;

FIG. 5 is a view along AA at an angle of inclination of the test cable from a horizontal of 30 degrees;

FIG. 6 - a set of provisions of the device relative to the ground wire.

The drawings show a device 1 for diagnosing overhead power lines, comprising a helicopter type aircraft 2, a control system (not shown in the drawing), control units 3, 4 of overhead power lines and a power source 5, a moving means consisting of an engine located in the housing 6 7, associated with the running rollers 8, and the pressure roller 9 with the drive 10, used to press the test cable 11 to the running rollers 8. In the housing 6 in its middle part there is an axis 12 passing through the walls of the housing and covers a fork 13, in the upper part of which guides 14 and a helicopter-type apparatus 2 are fixed. To align the running rollers 8 with the cable under study 11, guides 14 are designed, which in a narrow alignment are made linear, and the drive 10 of the pressure roller 9 is fixed to the housing 6, so so that the plane of movement of the pressure roller 9 was placed at an angle to the studied cable 11, for example, at an angle of 90 degrees. The guides 14 in a wide part of the alignment are deployed in a diagonal direction (see Fig. 5 top view). The end of the guides is continued with the horizontal section 15. To give rigidity between the guides there are crossbars 16 on which the research equipment and power sources can be placed 5. In any case, the center of gravity of the entire device should be lower than the wire under investigation. In the oscillation section of the housing 6, the guides 14 are made in an arc of a circle 17, the center of which coincides with the axis of oscillation 12 of the housing 6. The control units 3 are fastened with elements 18 and 19. The dropping part 20 of the plug 13 covers each guide with a 90 degree sector and is securely soldered to each other friend.

In the working position, the pinch roller 9 is pressed against the test cable 11, stretched between the supports 21, and in the non-working position, the roller is outside the alignment of the guides 14 (the non-working position of the pinch roller 9 is shown by a dotted line). If in the prototype the plane of movement of the pinch roller was strictly vertical and coincided with the studied cable, now the verticality of the plane remains, but the plane itself is rotated perpendicular to the studied cable 11.

The helicopter type aircraft 2 is equipped with a protective casing 22, an electronic stabilization device (not indicated in the figures), a control system (not indicated in the figures) and an electronic coordinate determination device (not indicated in the figures). The power source 5 in the form of a battery is mounted on rails. As control units for 3, 4 overhead power lines, a high-resolution video camera with the ability to change focus over a wide range and additional control units can be used: a thermal imager for diagnosing the condition of power wires, a laser scanner for constructing a map of the route and clearing, an ultrasonic scanner for a lightning protection cable, an ultraviolet scanner for the diagnosis of discharges and corona, etc. Each of the control units for overhead power lines is attached from the outside of the device 1 to its guides m and cables connected to sensors that are mounted on the housing 6.

Device 1 operates as follows.

The operator, using radio communications, launches a helicopter-type aircraft 2, which raises the entire device 1 from the ground surface (position A) above the lightning protection cable 11, then the device 1 lands on the cable 11 under study (position B). The guides 14 facilitate the alignment of the travel rollers 8 with the cable 11 at the time of landing. After landing, the operator using radio communication turns off the aircraft 2 and turns on the drive 10 of the pressure roller 9. The latter enters the narrow target between the rails and reliably compresses the cable 11 to the running rollers 8. The drive 10 of the pressure roller 9 is turned off. Device 1 is ready to perform diagnostics. When you turn on the engine 7 means of movement, the rollers 8 begin to rotate and the entire device 1 moves along the cable 11 from position B to position C. At the time of moving the device 1 along the cable, the latter is diagnosed. Having reached an obstacle, the operator turns off the engine 7 and turns on the drive 10 in the opposite rotation. The pressure roller 9 begins to move and releases the cable 11. The roller 9 leaves the narrow alignment of the guides 14 (the position is shown by a dotted line). Drive 10 shuts down. The aircraft 2 starts, and the whole device 1 rises above the support 14 to position G. Next, the device 1 is planted on the cable 11 on the other side of the support 14 (position D). The cycle repeats.

Thus, the above information indicates the fulfillment of the following set of conditions when using the claimed invention:

- the tool embodying the claimed invention in its implementation is intended for use in the electric power industry for diagnosing the state and spatial position of the following elements: lightning protection cable, power wires, structural elements of the support, suspension clamp and anchor fastening of the lightning protection cable, fasteners of insulators, a string of insulators, vibration dampers and other equipment;

- for the claimed device in the form as described in the independent clause of the claims, the possibility of its implementation using the means and methods described in the application or known prior to the priority date is confirmed;

- a tool embodying the claimed invention in its implementation, is capable of ensuring the achievement of the technical result perceived by the applicant.

An advantage of the invention is that when the studied cable deviates from the horizontal by plus or minus 30 degrees, the center of gravity of the entire device does not deviate from its stable vertical position.

The implementation of the guides in the area of oscillation of the housing along an arc of a circle, the center of which coincides with the axis of oscillation of the housing, reduces the length of the elements holding the sensors.

The implementation of the guides in a wide part of the alignment, deployed in a diagonal direction, the addition of horizontal sections that do not exceed the size of the aircraft allows you to increase the landing clearance of the device, which prevents the device from tipping over when landing on the ground.

The supply of guide rails allows to increase the rigidity of the structure and allows you to place research equipment and power sources on them.

In addition, the drive of the pinch roller is now located very close to the test cable, as a result, the size of the housing and its weight are reduced.

In addition, when landing on the studied cable and taking off from the cable, undesirable lateral vibrations of the cable and device do not arise, since the guides in a narrow alignment are made linear, rather than stepped. This became possible due to the rotation of the plane of movement of the pressure roller to the test cable at an angle of 90 degrees. As a result, the pressure roller in the idle position is completely removed from the alignment of the guides.

Claims (7)

1. A device for diagnosing overhead power lines, comprising a helicopter-type aircraft, a control system, overhead power line monitoring units and a power source, a moving means housed in the housing, consisting of an engine coupled to the travel rollers and a pressure roller with a drive for pressing the studied cable to the running rollers, guides facilitating the combination of running rollers with the studied cable, characterized in that an axis passing through the housing wall and surrounding the plug body, the top of which the rails are fixed, and the aircraft. 2. The device according to claim 1, characterized in that the guides in the region of oscillation of the body are made along an arc of a circle whose center coincides with the axis of vibration of the body. 3. The device according to p. 1, characterized in that the guides of the wide part of the alignment are deployed in a diagonal direction. 4. The device according to claim 1, characterized in that the guides are provided with horizontal sections. 5. The device according to claim 1, characterized in that the guides are provided with crossbars for creating rigidity and placing research equipment, for example, power sources, on them. 6. The device according to p. 1, characterized in that the plane of movement of the pinch roller is placed at an angle, for example, 90 degrees to the studied cable. 7. The device according to p. 1, characterized in that the guides in its narrow part are made linear.

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