Intelligent capacitor is a self-healing low-voltage power capacitor as the main body, intelligent measurement and control processor as the control center, microelectronics software and hardware technology to achieve over-zero control of the thyristor, the contacts of the mechanical magnetic retention relay delayed casting, to achieve the mechanical magnetic retention relay and thyristor thyristor composite switching circuit of low-voltage power capacitor over-zero casting technology, and then 0.4KV low-voltage line for the Power factor compensation.

Intelligent capacitors set sensing technology, network technology and new electrical technology independent research and development results, the combination of intelligent, miniaturized, networked. Compared with the traditional low-voltage reactive power compensation products, its operation is simpler, interface is more intuitive, no professional requirements for the use of personnel, and has automatic cycle casting; three-phase compensation, split-phase compensation, hybrid compensation, graded optimization of compensation, hybrid graded optimization of compensation; over-current/over-voltage/under-voltage/under-current, loss of voltage, phase-loss, harmonics, temperature, and other protections; measurement, control, communication and other functions.

Intelligent capacitor breaks through the existing low-voltage reactive power compensation equipment in the structure to realize the new mode of decentralized control and centralized management; the compensation system has the features of fewer devices, smaller temperature rise, smaller volume, smaller power consumption, and anti-harmonics; simple structure, easy to realize standardization, normative, flexible configuration of capacity, safety, reliability, economy, and easy to use, and so on. And the input capacitor prediction, improve the distribution substation active power, reduce the capacity increase investment, reduce the compensation system loss. Decentralized control of real-time switching increases the stability of the compensation system, over-zero control to reduce the inrush current on the system voltage shock, to stabilize the system grid, reduce equipment losses and improve the service life of capacitors, and energy saving and environmental protection is of great significance.