RU2453962C2 - Busher diagram of power plant - Google Patents

Abstract

FIELD: electric engineering.

SUBSTANCE: power plant includes a generator being coupled with a circuit: switch - output transformer - switch, which are connected in series, and a circuit: switch - auxiliary transformer. The secondary winding of output transformer also has connection with the circuit: switch - communication transformer with a circuit of different voltage class - switch, which are connected in series. This circuit is specific for additional circuit: switch - second output transformer - switch, which are connected in series and located between generator output and circuit input switch - communication transformer with the circuit of different voltage class - switch.

EFFECT: improved reliability.

1 dwg

Description

The proposal relates to the field of electrical engineering and can be used in electric thermal and nuclear power plants.

The well-known electrical circuit of a power plant [1] contains a generator to which auxiliary transformers are connected and an output transformer with two outputs of different voltage classes. It does not provide high reliability of the station, because in case of failure, the need for preventive maintenance on the transformer has to stop the generator.

There is also a known scheme of a power plant [2], which contains a generator to which auxiliary transformers and output are connected, and a communication transformer connected to a network of a different voltage class is connected to the output of the latter. Such a scheme is closest to the proposal. However, it does not provide high reliability of the station, because in case of failure or the need for preventive maintenance on any transformer, it is necessary to reduce the power generated by the generator.

The aim of the invention is to increase the reliability and use of the generator.

This goal is achieved due to the fact that a second output transformer is connected between the generator and the output of the communication transformer to a different output voltage level.

The drawing shows a diagram of a power plant.

The generator 1 is connected by the output to the inputs of the transformers: auxiliary needs 2, output 3 and 4. Between the outputs of the latter a communication transformer (or autotransformer) is turned on 5. All connections are made using switches (switches, disconnectors) 6.

The scheme works as follows.

The generator 1 generates electricity, which is supplied: to the auxiliary network through a transformer 2, as well as to a network of different voltages through output transformers 3 and 4. Partially, the power is transmitted through a communication transformer 5. In this scheme, the distribution of energy flows can be changed by regulating transformers 3, 4, 5, which are equipped with soldering with switching. If it is necessary to repair one of the transformers, it is turned off by two switches 6 on both sides. At the same time, power flows in different directions do not decrease. They are maintained at the same level by controlling the remaining two transformers in operation and by utilizing their overload capacity. All equipment is concentrated in one place (on the power plant block), which provides efficient and quick management. This ensures high reliability of the power plant and its achievement of a high utilization rate.

The abbreviation Bushehr stands for Block Controlled Electric Shunt.

Information sources

1. Rozhkova L.D., Dobrodeev E.D. Electrical equipment of thermal and nuclear power plants. M., Energoatomizdat, 1986, p. 144, Fig. 7.8.

2. Feldman M.L., Chernovets A.K. Features of the electrical part of nuclear power plants. L., Energoatomizdat, 1983, p. 65, Fig. 3-3.

Claims (1)

A power plant circuit containing a generator, to which a switch-output transformer-switch circuit is connected, connected in series, and a switch-auxiliary transformer circuit, and a switch-communication transformer connected to a network of a different voltage class — a switch connected to the secondary winding of the output transformer in series, characterized in that between the output of the generator and the input of the circuit, the switch is a communication transformer with a network of a different voltage class - the switch is on no switch circuit - second lead-transformer - switch connected in series.