The HNDQ series intelligent low-voltage reactive power compensation integrated module represents a new generation of reactive power compensation equipment for 0.4KV low-voltage distribution networks, offering high efficiency, energy saving, reduced line loss, improved power factor, and enhanced power quality. It comprises an intelligent measurement and control unit, a thyristor composite switch circuit, a line protection unit, and either two (delta type) or one (Y type) low-voltage power capacitors. This integrated module incorporates advanced technologies such as modern measurement and control, power electronics, network communication, automatic control, and power capacitors. Compared to traditional reactive power compensation devices, the new generation of low-voltage reactive power compensation integrated modules exhibit superior compensation effects, compact size, low power consumption, cost-effectiveness, simple wiring, convenient maintenance, long service life, and high reliability, meeting the elevated requirements of modern power grids for reactive power compensation.