Regulation system for low voltage line

Abstract

The invention relates to the technical field of regulating circuits, and particularly relates to a regulating system for a low-voltage line. The system comprises a body system and a voltage regulatingsystem. The body system comprises a double-winding transformer T1, two pairs of double-pole switches, a balance reactor and an autotransformer T2; the voltage regulating system comprises an intelligent control PCB, a current transformer, a transformer, a bypass switch K2, a bypass switch FU1, a bypass switch QF1, a bypass switch FU2 and a bypass system; and the bypass system comprises an indicating lamp L1, a relay KM1 and a switch K1. The system has the advantages that the switching of a ''voltage boosting'' function or a ''voltage reducing'' function can be carried out through the intelligent switching of the double-pole switch, a problem that a mechanical voltage regulating mode and a reactive compensation voltage regulating mode only can be used for boosting a voltage and cannot be used for reducing the voltage is solved, and a balance reactor is used for transition so that there is no jump phenomenon in the voltage regulating process; power utilization stability of a rear-end user is ensured; and through the bypass system, automatic bypass operation is realized during maintenance, and uninterrupted power supply during maintenance is realized.

Description

technical field [0001] The invention relates to the technical field of regulating circuits, in particular to a regulating system for low-voltage lines. Background technique [0002] Voltage is one of the main quality indicators of electric energy. Voltage quality has a direct impact on the safe operation of power equipment, line loss, industrial and agricultural safety production, and people's daily electricity consumption. Some low-voltage power supply lines are limited by various objective conditions, resulting in long lines and large voltage drops, resulting in poor voltage quality at the client end and increased line loss. Measures must be taken to improve the voltage quality. The problem of low voltage often occurs in distribution network terminals with long power supply radius and large and scattered load changes. [0003] In addition to the schemes involved in this system, there are two commonly used methods for voltage regulation: one is mechanical voltage regulati...

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