SU720623A1 - Redundancy system for supplying direct current users along several parallel channels - Google Patents

Description

The power supply of consumers of one of the channels unlocks the thyristor of the device for automatic connection of the battery, and consumers receive an increased voltage from their nominal value when the battery is in battery charging mode.

The purpose of the invention is to expand the functionality of the system.

This is achieved by the fact that in the system of redundant power supply of direct current consumers through several parallel channels, containing a common for all channels battery and secondary power supply units connected to the AC network, which are connected from the battery connection unit to the consumer and the unit connect the battery to the rectifier, the outputs of which are connected to the consumer connection block, to the controlled rectifier and to the input of the operating mode switch, the first output of which is The operating mode switch is connected respectively to the input of the battery connection unit and to the input of the consumer connection unit; a blocking of the battery charge circuit and a separating element is introduced in each secondary power supply unit, and the blocking input is connected to one of the battery connection unit outputs via a separating element the consumer, and the outputs - to the input of the battery connection unit to the rectifier and the second output of the operating mode switch, the blocking inputs being connected to each other in parallel but.

Due to this, each of the 1san lv of secondary power supply of this system can be used either to power the equipment through a separate channel or to charge the battery, while in the case of automatic connection of the battery to the consumer of any of the channels any other channel operating in battery charge mode.

The drawing shows a circuit diagram of the proposed power supply system.

The system contains a battery 1 and blocks 2-4 of the secondary power supply, forming respectively the power supply to consumers 5-7. The secondary power supply units are identical, each of them has two operating modes: equipment power (output stabilization, voltage) and battery charge (current stabilization). The operation mode is set by the operation mode switch 8, which acts on the controlled rectifier 9, the unit 10 connecting the rectifier to the battery in charge mode or the unit 11 connecting the consumer in the mode of powering the equipment. The unit 12 connects the battery to the consumer in case of contact with the AC mains voltage or on exit from the rectifier

contains a power switching element 13 and a signaling device 14 bits of the battery per consumer. In each of blocks 2 - and 4, an additional blocking 15 of the charge circuit of the battery is introduced. The input of this block is connected to the output of block 12 via a separating element 16, and the blocking output contacts are included in the input circuit of the rectifier-to-battery connection unit 10 in series with the switch 8. In this case, the inputs of the additionally introduced interlocks of all secondary power supply units are interconnected in parallel.

The system works as follows. In the presence of an AC mains voltage, one of the secondary power supply units, for example, block 4, operates in charge mode (its switch 8 is in the "Charging" position), and blocks 2 and 3 are in the equipment power mode (switch 8 is in the "Automatic power equipment). In this case, the output of the rectifier 9 of the block 4 is connected to the battery 1 through the contacts of the block 10, and the consumer 7 is disconnected from the block by the contacts of the block 11. The outputs of the rectifiers 9 blocks 2

0 and 3, operating in the equipment power mode, are connected by the contacts of the unit 11, respectively, to consumers 5 and 6, and the contacts of the unit 10 are disconnected from the battery. Thus, the battery is simultaneously charged from the rectifier of unit 4 and powered by consumers 5 and 6 from the rectifiers of blocks 2 and 3, and consumers 5 and 6 are separated from the battery 12 of the block 12.

In the event of a failure of the rectifier unit 2 (or 3), the switching element 13 connects the battery to the consumer 5 (6), and the signaling device 14 of the battery is discharged through a separating element

 16 affects the blocking inputs of 15 all blocks. As a result of the operation of the blocking device of the block 4, its contacts open the input circuit of the block 10 connecting the rectifier of the block, 4 to the battery.

0 The output contacts of block 10 open the battery charge circuit, eliminating the effect of pulsating and increased voltage of the charge circuit on the consumer power supply channels. The described process of consumer protection occurs in the system also when

 operation of any other channel in battery charge mode. When the rectifier voltage recovers, the system returns to its original state.

The presence of blocking and the indicated links allows for promptly changing the mode of operation of any feed channel, which expands the functionality of the system.

Claims (2)

1.Smirnov N. N. et al. Power supplies for urban exchanges. M., “Holy, 1974, p. 9-14. 2.Kazarinov I. А. Designing of power supply installations of enterprises of wire communication. M., “Holy, 1974, p. 40 -:; 43.