Intelligent reactive compensation module control circuit and control method thereof

Abstract

The invention discloses an intelligent reactive compensation module control circuit, which comprises a low-voltage power capacitor body C, a main switch Z, a microprocessor circuit M, a switching circuit A1, a switching circuit A2, a voltage detection circuit V1, a voltage detection circuit V2, a current detection circuit I, a temperature acquisition circuit W, a communication circuit T, a power supply circuit P and a man-machine contact module R, the switching circuit A1, the switching circuit A2, the voltage detection circuit V1, the voltage detection circuit V2, the current detection circuit I, the temperature acquisition circuit W, the communication circuit T, the power supply circuit P and the man-machine contact module R are respectively connected with the microprocessor circuit M. According to the invention, the problems that the capacitor bank is easy to damage and the like due to inaccurate zero crossing point detection and large switching inrush current under the condition of harmonic waves or interference in the capacitor switching process of the conventional reactive compensation capacitor are solved, and the reliability of reactive compensation is improved.

Description

technical field [0001] The invention relates to a control circuit and a control method thereof, in particular to an intelligent reactive power compensation module control circuit and a control method thereof, belonging to the field of power capacitor equipment. Background technique [0002] Intelligent reactive power compensation capacitor is an intelligent reactive power compensation device integrating advanced technologies such as modern measurement and control, power electronics, network communication, automatic control, and power capacitors. Intelligent reactive power compensation capacitors have changed the backward control technology of traditional reactive power compensation devices and the backward switching technology of mechanical contactors or mechatronic switches as switching capacitors, and changed the bulky and cumbersome structure of traditional reactive power compensation devices Mode, so that the new generation of low-voltage reactive power compensation equi...

AI Technical Summary

Problems solved by technology

However, in the case of harmonics or interference during capacitor switching, the control module will misjudge the zero point, resulting in switching at a false zero point, resulting in a large switching inrush current, resulting in damage to the capacitor bank, etc.

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