Reliability evaluation for main connection taking account for switching operations

This paper evaluates the reliability of main connections in the power plant or substation based on the Monte-Carlo simulation algorithm. The proposed simulation procedure can simulate the process of faults isolation and switching operation by means of improved topology analysis algorithm, which makes simulation more practical, to improve the calculation accuracy. Meanwhile, one kind of effective reliability indices for main connection reliability evaluation is brought forward. The necessity and effectiveness of the proposed simulation procedure is verified by quantitative analysis and comparison about several common main connection styles.