Transformer Vacuum Air Conditioning System for Rural Network Irrigation

Abstract

The invention relates to the technical field of agricultural network irrigation transformers, in particular to a transformer vacuum pressure-conditioning system for agricultural network irrigation. The system includes a transformer, a controller, a three-phase reactor, and a vacuum circuit breaker. The winding on the high voltage side of the transformer is provided with at least 5 gear taps. Each vacuum circuit breaker includes two vacuum bubbles, two pairs of auxiliary contacts, and normally closed contacts. And the signal input line, one of the two lead-out lines of the vacuum bubble is connected to the taps of the same gear of the A-phase winding and the B-phase winding, and the two lead-out lines of the other vacuum bubble are connected to the same gear taps of the B-phase winding and the C-phase winding , the signal input line of the vacuum circuit breaker is connected to the controller; the three-phase reactor is connected in series at the rated position of the three-phase winding, and the connection lines between the three-phase reactor, the A-phase winding and the C-phase winding are connected in series with a vacuum circuit breaker Auxiliary contacts normally closed contacts of the device. The invention replaces the no-load switch with a vacuum circuit breaker and a controller to realize automatic voltage regulation of the transformer. The invention is provided with a three-phase reactor to suppress short-circuit current when the vacuum circuit breaker is switched.

Description

technical field [0001] The invention relates to the technical field of agricultural network irrigation transformers, in particular to a transformer vacuum pressure-conditioning system for agricultural network irrigation. Background technique [0002] In the remote areas of our country, the farms have a large area, and it is necessary to use electric facilities to support agricultural irrigation. Because the farms are too large, each area must be equipped with a transformer, and the use of transformers is very large. And because most of the farms are relatively remote, it takes a very long line from the main substation in the urban area to transmit electric energy to the farm. There are many transformers passing through on the way, resulting in the output voltage of the transformer being far lower than the rated voltage of the normal transformer. Unstable and highly volatile. If the voltage is lower than the working voltage of the irrigation motor, the working current of the...

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Problems solved by technology

Moreover, the state of low voltage cannot be detected in time. Even if it is found, it is necessary to switch gears after a power failure, which will affect the normal irrigation efficiency.

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