针对微机保护电流回路二次接线的错误,提出一种利用线路空载投入时,线路电流呈容性的特征,来判断电流回路二次接线是否正确的方法,说明了软件设计思路,并提出电流回路二次接线错误微机自动识别纠正的方法,通过此办法,可以解决微机保护因为电流回路二次接线错误引起的问题。 Aiming at the error of secondary connection of microcomputer protection current loop, this paper presents a method to judge whether the secondary connection of current loop is correct by using the characteristic that the line current is capacitive when the line is put into operation. The idea of ​​software design is presented and the current Circuit secondary wiring error Microcomputer automatic identification and correction method, through this approach, you can solve the computer protection because the current loop secondary wiring errors caused the problem.