RU74240U1 - DEVICE FOR ELECTRIC ENERGY SELECTION FROM ELECTRIC TRANSMISSION AIR LINES - Google Patents

Abstract

The utility model relates to the field of basic elements of electrical equipment, and more precisely to adjustable transformers with relative displacement of turns or parts of windings and can be used to power consumers of electrical energy located at a distance from stationary sources of low-voltage electrical energy. The technical result of the utility model is the realization of the possibility of non-contact power take-off from an overhead power transmission line, as well as the possibility of obtaining the required secondary voltage at different values of the primary voltage. The device for selecting electric energy from overhead power lines contains a linear part located under the overhead power line, a conversion-stabilizing unit, a measurement and control unit, an electric power consumers connection unit and an earthing device. The linear part includes a linear wire and a support and mounting device. The consumer of electrical energy is connected via the connection unit. New in the device for selecting electric energy from overhead power transmission lines is the use of a stationary high voltage network to power consumers located at a distance from low voltage electrical energy sources having a rated voltage significantly lower than the rated voltage of overhead transmission lines from which the selection is made. It does not require a contact connection to the power line and allows you to obtain the required secondary voltage at various values of the primary voltage, due to changes in

Description

The utility model relates to the field of basic elements of electrical equipment, and more precisely to adjustable transformers with relative displacement of turns or parts of windings and can be used to power consumers of electrical energy located at a distance from stationary sources of low-voltage electrical energy.

Known voltage transformer containing at least two windings with a common magnetic flux, which are electrically isolated from each other. One of the windings (primary) is connected to a stationary electrical network, and the other (secondary) serves as a source of electricity, the required voltage for the consumer [1].

The disadvantages of such a transformer are:

- the need for a contact connection to the primary power supply network;

- limited ability to regulate the secondary voltage;

- does not allow to obtain the required secondary voltage when using various primary voltages.

The known effect of inducing potential and electromotive force in a wire placed in an electric field [2]. The source of this field may be an overhead power line.

The technical result of the utility model is the realization of the possibility of non-contact power take-off from an overhead power transmission line, as well as the possibility of obtaining the required secondary voltage at different values of the primary voltage.

The technical result achieved is achieved by using a distributed capacitive power take-off device, which is a linear wire located parallel to the overhead power line and connected to a converting-stabilizing unit. In this case, the potential induced on the linear wire depends on its geometrical location relative to the overhead power line, its design features and rated voltage. The current taken from the line wire depends on its length.

The drawing shows a structural diagram of a device for selecting electrical energy from overhead power lines.

The device for selecting electric energy from overhead power lines contains a linear part (2) located under the overhead power line (1), a conversion-stabilizing unit (7), a measuring and control unit (5), an electric power consumers connection unit (8) and a device grounding (6). The linear part includes a linear wire (3) and a support and mounting device (4). The consumer of electrical energy (9) is connected via the connection unit (8).

A device for selecting electrical energy from overhead power lines works as follows.

The linear part is located under or near the overhead power line using a support and mounting device. The value of the potential induced on the linear part is controlled by a measuring and control unit. If necessary, the geometric arrangement of the linear part relative to the overhead power line is adjusted to obtain the necessary value of the induced potential. Induced potential arrives at the transforming-stabilizing block. As the second wire, a neutral conductor connecting the device is used.

grounding with a conversion-stabilizing unit, at the output of which the consumer receives, power with the required voltage value.

Information sources:

1. Electrical devices: Textbook. for universities / O.V. Alekseev, V.E.Kitaev, A.Ya. Shikhin; Under the total. ed. A.Ya. Shikhina. - M.: Energoizdat, 1981. - 336 p.

2. L.A. Bessonov. Theoretical foundations of electrical engineering. Electromagnetic field: Textbook. - 9th ed., Revised. and add. - M .: Gardariki, 2001 .-- 317 p.: Ill.

Claims (1)

A device for selecting electric energy from overhead power lines, comprising a linear part with a support and mounting device, a conversion-stabilizing unit, a measuring and control unit, an earthing device and an electric power consumers connection unit, characterized in that the linear part is made in the form of a wire arranged in parallel overhead power line, and the regulation of the potential induced on the linear part is carried out by regulating the distance to the overhead line power transmission.