SU714522A1 - Transformer for limiting short-circuiting current - Google Patents

Description

water is installed the primary winding, on one rom the superconducting winding and the superconductor are located, the screen connected in series with the superconducting winding, and on the second rom there is the secondary winding.

conductive Material additional winding, connected in series by this secondary coy. ---. . . ;

the drawing shows schematically a transformer in a single-phase technology,,; - -.,.,.

The transformer contains a three-rod magnet pipeline, on the middle core 1 of which the primary winding 2 is located. On the rim 3 there is a secondary superconducting winding 4 and a superconducting screen, which is made in the form of a ring 5, covering. (The magnetic core, has superconducting transitional bridges of b and pb, is subsequently connected with superconducting winding 4. At rm 7 is located) of the ken, secondary winding 8 and an additional winding connected to it 9; ,; . ...

The terminals of the winding, 4 are connected via a cable and the terminals of the windings are 2, 8, 9 oyabichny cables.

The ranformator works as follows

..

As the operating current flows, a magnetic flux is created in the primary winding 2 in the rods of the magnetic circuit 1, 10, which induces in the secondary windings 4, in an electrostatic section. In the cable connected to the winding 4, current flows and electricity is transmitted to the consumer. The superconducting ring 5 shields the magnetic circuit rod 11 from the alternating magnetometer; Eliminates magnetic

connection Winding 9 with winding 2. AT-close circuit.

Connected to the winding 4, the current of the circuit is KG S31Sha Aet and Shyuyt transitional bridges or the entire ring 5 from the state of superconductivity. In realism, the state of the institute is 5 or one (two).

bridges b and part of the carrier; MagnyTygo, piercing

The primary winding 3 closes through the YbpileStretch branch of the magnetic circuit 2. As a result, the output voltage is 5m; 1 :: ae; ty is the limiting of the short circuit current and the necessary distribution of the transmitted energy between the cables connected to the output1M of the secondary windings of the transformer. -,

When current drops in the circuit of winding 4, ring 5 and bridges do not leave the state; th -; SyerhpDoDimOst and with a periodic change in the current of the winding, and the transformer returns to its original operating state. :: С ё1Ё п: revsh №1yё transitional bridges .ki b can be made in the form

a superconducting electrical circuit placed in a separate cryostat and made of superconducting material, which is a poor conductor in the normal (non-superconducting) state.

The superconductivity of the transition bridge can be controlled not only by the current, but also by a magnetic field created, for example, by a coil surrounding the transition bridge (or part of its parallel branches) and connected in series with one of the transformer windings.

The device is able to solve the problem of non-adaptability to overloads of superconducting devices of variable TQK a. By transmitting, for example, in case of overloads via a superconducting cable, only the allowable amount of electrical energy is achieved, it is thus possible to protect the superconducting transformer winding and the superconducting 11 and 1 cable, which is sensitive to overloads, to a normal (not superconducting) state. This will significantly increase the throughput and the cryogenic transmission capacity of the system5 1 as a whole.

Claims (2)

Invention Formula . 1.Transformer for limiting short-circuit currents, which contains a three-core magnetic circuit, primary and secondary windings, one of KOTOpbix is made superconducting, and the other is made of ordinary electrically conductive material, and superconducting. screen, so that, in order to simplify the design, current efficiency and limiting the functionality of the transformer, the primary winding is installed on the middle rod, the superconducting winding is located on one pMe of the superconducting screen connected in series with the superconducting winding, and on the second side there is a secondary winding made of conventional electrically conducting material, an additional winding connected in series with this secondary winding. 2. The transformer according to claim 1, which is based on the fact that the superconducting screen is made in the form of a short-circuited winding and has a superconductive transition bridge. Sources of information taken into account in the examination 1. USSR author's certificate 509902, cl. H 01 F 27/36, 07.07.76