SU334645A1 - DEVICE FOR CONNECTING HIGH FREQUENCY - Google Patents

Description

Known capacitor antenna and transformer devices for connecting high-frequency equipment to power lines.

At the same time, transformer devices are made on current transformers, the low-voltage winding of which is shunted by a high-frequency choke.

However, the known devices do not provide the required current limit for their use.

The purpose of the invention is to increase the current limit of the use of the device.

This is achieved by introducing a parallel high-frequency LC circuit of the device into the device, shunting the high-voltage winding of the transformer, made in the form of a segment of a bus covered by a magnetic circuit with high magnetic permeability and placed into a glass of non-magnetic material so that one end of the cup is connected to the bus directly, and the other through capacitors and filled with electrically insulating material.

FIG. 1 is a schematic diagram of the device; in fig. 2 - LC circuit design.

tirovanyi high frequency choke 2 and capacitor 3. The device is connected to the input of the power transformer 4. The high voltage winding TT-1 is closed by a parallel LC-circuit from the capacitor 5, formed by one or more capacitors, and throttles 6. Parallel LC-circuit is made on a short segment of the bus 7 Tire 7 is covered by a magnetic circuit with high magnetic permeability. The magnetic circuit is assembled from washers 8, for example, oxypher, strung on a segment of tire 7, and placed in a cup 9 made of a non-magnetic material with high electrical conductivity. One end of glass 9

connected (welded) to bus 7 directly and the second through capacitors 10 and filled with electrically insulating material 11. The magnetic circuit is isolated from bus 7 and glass 9 by electrical insulating 2.

The main current frequency of 50 Hz flows through the inductor 6, the resistance of which at a frequency of 50 Hz is 2-3 times less than the resistance of the connection bus TT- /. A current through the high voltage winding TT- / flows through the order of

less than its nominal, and the total current transformed in the low-voltage windings flows through the RF choke 2. The signal is transmitted to the low-voltage windings TT-1, transformed into a high-voltage winding,

sat down 6 and comes in on the power network to the receiver.

The LC circuit from capacitor 5 and throttles 6 is a high-frequency protector, which can be single-frequency, wide-band or multi-frequency. The resistance of the LC circuit tuned to a high frequency is greater than the input impedance of the network.

Subject invention

A device for connecting high-frequency communications equipment to high-voltage power transmission networks, comprising its typical two-core current transformer, characterized in that, in order to increase the allowable current limit of the device's use, a parallel high-frequency LC circuit is inserted into it, bypassing the high-voltage winding transformer, made in the form of a segment of a tire covered by a magnetic circuit with a high magnetic permeability and placed in a glass of non-magnetic material so that one end of the glass is connected nen directly to the bus, and the other - through capacitors and filled with an electrically insulating material.