After the event collection of the power information collection system, if the whole event energy meter is more than a certain proportion, the success rate of data acquisition will be decreased significantly. In this paper, the communication performance and concentrator collection workflow of various low voltage station area sampling schemes are analyzed in detail, and the reasons for the decrease of the success rate of freezing collection are also investigated. After that, the solution of collecting the daily freezing and the whole event data of the concentrator is given.