SU45681A1 - Mobile transformer substation - Google Patents

Description

Connecting electrical installations anywhere to a high-voltage network under voltage is necessary in many cases. Under the conditions of operation of electrical installations in agriculture, especially in field cultivation (electric plowing, electric hammering), in gardening (electric pumping mobile installations), etc., where the installation is operated for a short time and then transferred to another place, the presence of mobile Transformer substation and its connection to the rabbeche network under voltage is of current importance.

In the meantime, the existing connection systems are associated with the need to remove voltage from the network to produce the installation of the connecting point. Thereby, many consumers have to be left, and sometimes entire areas without current, which causes the latter great damage in production; in addition, this is accompanied by a delay in the start-up of one or another electrified installation that is included in the operating network.

The proposed mobile transformer substation has its purpose to solve this problem with the elimination of these drawbacks. The proposed substation, as well as the well-known ones, consists of a late-carrying transformer enclosing and equipped with a lifting mast carrying contacts to connect to the transmission lines; according to the invention, the mast is made sliding by the type of fire escapes, and installed at the ends of the adjustable holders, the contacts are made in the form of arms, in order to connect the substation to the wires of the transmission line at any place of the latter by raising the mast and setting the positions to The wires lie on the contact arms.

In the drawing fig. 1 and 2 depict the proposed substation in the switched on position in two projects: FIG. 3- in the transport position, i.e. with the mast folded for the purpose of moving the wagon.

The wooden transformer booth 7 (its dimensions depend on the transformer power and are determined by the area occupied by the transformer and the required distance from the walls and the roof to the current-carrying parts) is mounted on the wheels. A lift mast 2 is attached to the wall of the transformer box / s contact. 5, 4,: to connect to the wires l - um trans, a, ah. The mast is completed on the 1st-1st reg. as firefighters lest.chtsts. She is; from several wooden fer.-i. from xi; lower naskle.cha to 3s-days cTciu-ie

booths /. The second farm, the second third, etc., enters the lower truss. On the upper truss of the upper trusses on the adjustable holders (rods) with high-voltage wires from the top 5 and the contacts 3, 4, 5, are made in the form of arches. Extreme contacts 3, 5 are provided in the middle part of the arches with special protrusions - pistils, which are set so that the wires, between them and the arms, give good contact even in the case of rocking of the wires by the wind. The holder of the contact 3 can be rearranged along the beam in the horizontal direction to adjust the distance between the contacts in accordance with the distance between the wires of the transmission line in the horizontal plane; the contact holder 5 can move in the vertical direction in accordance with the distance between the wires in the vertical plane; the contact holder 4 is installed in the beam on a hinge with the possibility of rotation in a vertical plane, loaded with a spring 6 and connected by a system of levers with the contact holder 5.

The trusses of the mast 2 can be pulled out of each other by means of cables 7 connected to the lower ends of the trusses, thrown over the blocks and wound on two rollers of the winch 5, which is rotated by the handle. When the winch rotates, all the upper trusses are simultaneously pulled out.

Flexible insulated cables 9 are electrically connected to contacts 3, 4, 5. The connection is carried out using insulators 10 mounted on the crosspiece. The cables are wound on iron drums 11, mounted on the bushings insulators 12 located on the roof of the booth. From the lead-through insulators 72, the wires come through high-voltage fuses to the transformer winding. The drums 11 are used for winding cables 9 on them when lowering the mast and for tensioning cables when the mast is raised.

To connect the substation to the transmission line, install the booth 7 along the line under the wires so that contact 5 comes under the bottom wire, which, as the author’s experience has shown, is quite

feasible. Then contact 3 is made by moving its holder along the beam under the middle (jiesbiR) wire. After that, the winch 8 is rotated by the handle and this raises the mast. The extension of the trusses takes place until pin 5 approaches the bottom line. At this moment, the holder of the contact 4 is in a vertical position, being detached by the spring 6, and does not come into contact with the upper wire. Now the end of the cable 13. connected through the spring 14 and the insulators 75 to the end of the contact holder 5 is attached to the hook on the lower truss. After that, the mast is further raised up to the complete connection of the contact 3 with the left (Fig. 2) wire and contact 5 with the lower wire; the holder of the contact 4, when the cable 13 is tensioned, is turned by a system of levers into an inclined position, and the contact 4 is placed on the upper wire. Spring 14 serves as a shock absorber for the cable.

This design of the actuator of contact holder 4 provides automatic disconnection of the latter from the line and installation of the holder in a vertical position when lowering the mast. For example, if the lifting cables are broken, the mast will start to fall, the cable 13 will loosen and the spring b will withdraw the contact holder 5 to a vertical position.

To enable the substation to turn on at night, battery lighting is installed in the substation. A spotlight 76 is installed on the roof, illuminating pins 3 ,. 4.5.

To ensure safety, the equipment installed on the roof is protected by a net and the wheels of the carts are grounded.

In order to service the substation, sufficiently qualified personnel should be involved, who must turn on the substation and approach it while working in rubber boots and gloves.

The subject matter of the invention.

1. A mobile transformer substation consisting of a wagon.

an enclosing transformer and equipped with a lifting mast, carrying contacts for connecting to transmission lines, characterized in that the mast is made sliding by type of fire escapes, and the contacts mounted on the ends of the adjustable holders are designed to connect the substation to the wires of the line

transferring anywhere in the latter by raising the mast and placing the contacts in such a position that the wires rest on the contact arms. 2. In the substation according to claim 1, use a spring at the middle contact, designed to automatically remove it in case of disconnecting the contacts from the wires when the mast is lowered.