High-voltage power-saving voltage regulator

Abstract

The invention discloses a high-voltage power-saving voltage regulator with power saving function used in a high-voltage power line. The high-voltage power-saving voltage regulator adopts a high-voltage vacuum contactor connected in a voltage regulating coil, and output voltage is regulated by the high-voltage vacuum contactor switching a tapping shift of the voltage regulating coil of the high-voltage power-saving voltage regulator. The high-voltage vacuum contactor has less abrasion, high grade of withstand voltage and small switching current. In addition, the input terminal and the output terminal of the high-voltage power-saving voltage regulator are respectively connected with a group of transfer switches, and the connections of input and output of the high-voltage power-saving voltage regulator are changed by on-off of the transfer switches, so that the high-voltage power-saving voltage regulator has the function of voltage boost and reduction without increasing internal windings of a coil.

Description

technical field [0001] The invention relates to a voltage regulator, in particular to a high-voltage power-saving voltage regulator used in a high-voltage power line and having a power-saving function. Background technique [0002] With the development of China's electric power industry and the improvement of the country's agricultural power grid renovation project, the phenomenon of low voltage at the end of the power grid has been generally improved. However, the resulting problem is that the voltage of the power grid is generally high, especially when the power load is low, it is also a common phenomenon that the voltage of 380V rises to 450V, resulting in increased loss in the power grid and a low pass rate of power supply quality. And the power consumption of all equipment increases, and often burns out the motor, reduces the service life of the equipment, and increases maintenance and repair costs. [0003] At present, there are few voltage adjustment and power saving...

AI Technical Summary

Problems solved by technology

However, it cannot be used in practice, because there are problems in the reformation, and this kind of on-load tap changer is severely worn and needs to be replaced frequently

Although the use of vacuum on-load switches does not have the above-mentioned wear problem, and there are currently high-voltage and ultra-high-voltage vacuum on-load switch products, but the withstand level voltage, that is, the voltage between the taps of the voltage regulating coil, is not high. More than 4000 volts, and when the voltage level is 10 kV, the stage voltage on the voltage regulating coil of the high voltage regulator is up to 10000 volts or more, so the vacuum on-load switch cannot be used in the voltage regulating coil of the high voltage power saving voltage regulator It can only be connected to the main circuit of the high-voltage power-saving voltage regulator, the switching current is large, and the self-loss is large, so it can only have the function of voltage regulation

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