SU922950A1 - Device for connecting intermediate power system to remote power transmission line - Google Patents

Description

The invention relates to electrical engineering * ke, namely to communication devices of power systems with long-distance power lines.

A device is known for connecting an intermediate power system with a far power transmission, which contains dual power transformers with a special ‘setting of their parameters, connected in parallel with the far power transmission for voltage stabilization in the intermediate power system Hn.

However, this device for high-voltage long-distance power lines is very expensive and requires special use and configuration of a series transformer.

It is also known a device for connecting an intermediate system with a remote elec. Transmission, consisting of a serial adjustment transformer, connected through a line switch between the far power transmission system

2

nevye tires intermediate power system [2).

‘A disadvantage of the known device is its small adjustment range.

¹ The purpose of the invention is to increase the allowable range of the voltage of the far transmission power.

Delivered to the child, it is achieved that in the device for connecting the intermediate power system with a long-distance power transmission, consisting of a series regulating transformer, connected through the first circuit breaker between the long-distance power line and the main tires of the intermediate power system, the intermediate power system contains additional buses with different nominal voltages connected to the main bus switches, and a serial adjustment transformer is installed on the insulation board form.

In addition, the device may contain a second series regulating transformer, which is switched on via a second line switch between the long-distance power transmission and the second main busbars of the intermediate power system, which are connected by switches to the aforementioned additional buses and an additional switch - to the hight ·

The first connection of the first consecutive pause is switching through the open control transformer and the first line switch.

Fig, 1 shows a diagram of the proposed device with one after -

adjusting adjusting graisform-, 5-tuning adjusting transformer

torus} in FIG. 2 is the same, with two series regulating transformers} in FIG. 3 and 4 - wiring diagrams for serial windings

control transformer, installation control transformer 1,

on the insulation platform. The device (Fig. 1) contains a serial adjustment transformer 1 connected via a switch 2 lines between the far power transmission 3 and the main tires 4 of the intermediate system. Additional rail 5 with various nominal voltages are connected with the main busbars 4 Nerezov 6. Control switches ustroyst- Xia _W about twice, in parallel with uvevom performed by the control device 7. The device (Fig. 2) additionally contains a second serial control transformer 8 connected via the second switch 9 of the line between the far power transmission 3 and the second main tires 10, which are connected to the additional tires 5 by switches 6, and with the switch of the line 2 - an additional off-power reduction device regulator 11. Serial adjustment transformer 1, consisting of booster 12 (Fig. 3 and 4) and regulator 13 transformers installed on an insulating platform 14. Highly oltny autotransformer 15 (Figure 4) · intermediate grid may be connected to additional buses 5 and serial control transformer 1.

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The device (Fig. 1) operates when the voltage in the far transmission power 3 changes, so that the electrical connection of the far transmission power 3 with the intermediate power system is carried out directly via the 2-line switch, the serial control transformer 1, the main buses 4

922950 4

and switch 6 of those intermediate power system buses whose rated voltage is close to the long-distance power transmission voltage 3 at the connection point. The additional voltage drop is compensated by a series-controlled transformer 1. With a deep voltage change, the line 2 switch opens the swap contacts and to the breakers 6 from one additional busbars 5 to others, having the closest voltage with power transmission 3, while there is a switch voltage. To increase the reliability of flexibility

communication devices, reducing the regulation of a separate sequence of improving the quality of the released energy, the device is equipped with a second similar device connected in parallel and interconnected by an additional

25 switch 11 (figure 2). Switches 2 and 11 allow connecting successive regulating transformers 1 and 8 in series, with the limit of voltage regulation increasing twice the transmitted power on different buses of main 4 and 10, thereby avoiding power supply to the connected power system

₃₅ during the switch.

Insulation platform 14 is designed

voltage extra tires 5 with the highest rated voltage.

Savings are achieved by

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voltages along long transmission lines and by replacing costly high-power high-voltage transformers with additional voltage transformers calculated for a lower voltage. Savings can be uve ("Well

Lick when replacing switches with 6 disconnectors, if the technical parameters of the disconnectors allow you to turn on and off the serial control transformer 1 to the additional tires 5 at idle speed with the line switch 2 turned off.

Claims (2)

Claim 1. A device for communication between the intermediate power system and the far electrode, containing sequential five 922950 6 An adjustment transformer connected via the first line switch between the far power transmission and the main buses of the intermediate power system, characterized in that, in order to increase the allowable range of the voltage of the far power transmission, the intermediate power system contains additional buses with different nominal voltages connected to the main buses of the switches, and the serial one Regulator transformer installed on an insulating platform. 2. Device by π. 1, that is, that it contains a second series regulating transformer, a second switch of the line between the far power transmission and the second main buses of the intermediate power system, which are connected with switches with additional pins and an additional switch - with the connection point of the first series regulating transformer and the first line breaker. ^{four 10} I