The invention discloses a power grid response building internal load monitoring method and system and a storage medium. According to the scheme, load monitors are arranged at circuit breakers to measure the power consumption information of a group of electric loads, and a signal processing technique is applied to decompose the operation plan of a single load; and the load monitors of all places are connected to the cloud, a small data file including the transient mode and the down-sampled power data of each monitored circuit are transmitted to the cloud to realize unsupervised load failure mode learning and building system performance prediction, and Lipschitz regularity is applied to classify various multi-scale edges in transient load profiles during the learning process; and finally the appropriate tags are trasnmitted back to the local platform for load classification. The monitoring scheme improves the potential of the electric power monitoring equipment and reduces the workload required for deploying and debugging the monitoring solution.