Line selection for single phase-to-ground fault for low current grounding power system has been a technical problem since long before.Fault line selection for single phase-to-ground fault of multi-criteria information integrated with low current grounding power system is proposed for reliability improvement.After conversion of primary data through VT and CT,fault features will be sent to various criteria for line selection;afterwards,fault measures of each busbar and outgoing line according to fuzzy transformation and weight coefficients of various criteria will be concluded;ultimately,fusion decision will be made and final decision result will be output.The paper points out that the key technology of this fault line selection is to reasonably definition of membership function of fault measures and weight function of criteria.

The way to improve IMC(internal model control) was studied,making use of the singleneuron selfadaptive method.By the simulation experiment,the method improve the ability of internal model control,and make it adapt to the change of the control object better.