The development of such automation technology of distribution network as intelligent ring main unit as well as of renewable energy improves the intelligence of distribution network and

at the same time

also increases complexity of reliability analysis. The use of failure mode and effect analysis（FMEA for short）can predict in advance the effect due to fault isolation and multiple load transfer of active intelligent distribution network. In view of such issues of FMEA method as large manual generation workload and lack of overall assessment of system ect

the standardization method of FMEA table based on load classification and reliability assessment of active intelligent distribution network is proposed. The method compromises both intelligence and multiple DG power supply characteristic in the active intelligent distribution network and sets up the linear expression of the two-dimensional matrix of the FMEA table on the base of breadth first search and connectivity discrimination in graph theory technology and with the load classification identification matrix in the active intelligent distribution network as the key characterization quantity.Meanwhile

the standardization model for assessment index of reliability system of active intelligent distribution network is set up with combination of the load classification identification matrix and FMEA table. It is shown by the calculation case simulation that the standardization method proposed in this paper is simple and universal to complex active intelligent distribution network. The effectiveness of the standardization method proposed in this paper is verified method is verified by way of comparison with Monte Carlo analysis