The invention discloses a big data-based intelligent power grid collection system, and belongs to the technical field of power grid data collection and processing; the intelligent power grid collection system has high data stream reduction degree, non-volatile data stream of fault points after data stream reduction, and easy fault node positioning. The intelligent power grid collection system comprises a node data stream collection apparatus arranged on a power grid node for collecting power grid node data stream, and a server arranged in a power grid monitoring center; the node data stream collection apparatus comprises a controller, a storage, a data processing module, a humidity sensor, a temperature sensor, a wind speed sensor, a current sensor, a season time frame timing module and apeak valley power time frame timing module; and the server, the storage, the data processing module, the humidity sensor, the temperature sensor, the wind speed sensor, the current sensor, the seasontime frame timing module and the peak valley power time frame timing module are connected with the controller separately.