At present

more and more rural power lines are stolen

so how to prevent against the theft and to warn ahead of time is the serious problems needing solved by power supply enterprises.Starting with the fundamental principle and technical scheme

several prevention schemes against theft are introduced for rural power grid based on electrical parameter detection technique

and their characteristics are pointed out respectively.These schemes are suitable for the prevention against theft for rural power lines and provides more perfect plan for automatic control system of rural power grid.