Intelligent phase selection system and method for multifunctional measuring and control device

The present invention discloses an intelligent system and method for phase selection multi-function monitoring apparatus, the three-phase selection factors affecting accuracy, including the frequency measurement accuracy, and the zero-crossing point detection accuracy of circuit breaker closing time parameter accuracy and comprehensive analysis study, high precision frequency measurements, zero crossing detection with high accuracy, a series of compensating circuit breaker parameter phase Selector hardware and software technology, combined with selected unique intelligent assistance functions, not only the intelligent routing with high precision, is also achieved intelligent phase selection function, the present invention enables a minimum impact on the circuit breaker closing power equipment and systems, extend the life of electrical equipment, improve grid stability, good application prospect.