Portable multi-adaptive voltage regulation automatic reactive power compensation device

Abstract

The invention discloses a portable multi-adaptive automatic reactive power compensation device for voltage regulation, which includes a current transformer, a residual current action protector, an automatic reactive power compensation controller and two sets of intelligent capacitors. The automatic reactive power compensation controller is equipped with A voltage sampling circuit, a current sampling circuit and a DSP processor, the first lead wire at the upper end of the residual current action protector is connected to the voltage sampling circuit, the secondary line of the current transformer is connected to the current sampling circuit, and the DSP processes The device is preset with a voltage switching threshold and a delay threshold, and the voltage sampling circuit performs voltage data collection according to the preset delay threshold, and the DSP processor performs a comparison between the collected voltage data and the preset voltage switching threshold Compare. The present invention can achieve more accurate switching command data and more correct switching actions through the 5-time cycle criterion.

Description

technical field [0001] The invention relates to reactive power compensation technology. Background technique [0002] At present, the automatic reactive power compensation controllers on the market use the voltage threshold to control reactive power switching using the delay method. However, in rural areas, due to the uneven load distribution and large seasonal load changes, they are installed on the line side as line segment compensation. The reactive power compensation device often encounters that the delay time is set short, and the reactive power switching is frequent. If the delay time is set too long, the voltage quality of the line side cannot be improved in time when there is a short "low voltage" on the rural line side. . [0003] Therefore, how to use an effective judgment method to make the automatic reactive power compensation controller send timely instructions and at the same time avoid frequent switching actions of smart capacitors is an urgent problem to be ...

AI Technical Summary

Problems solved by technology

[0002] At present, the automatic reactive power compensation controllers on the market use the voltage threshold to control reactive power switching using the delay method. However, in rural areas, due to the uneven load distribution and large seasonal load changes, they are installed on the line side as line segment compensation. The reactive power compensation device often encounters that the delay time is set short, and the reactive power switching is frequent. If the delay time is set too long, the voltage quality of the line side cannot be improved in time when there is a short "low voltage" on the rural line side.

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