According to the condition of Datong network in 2004,this paper analyzes the N-1 breaking of 220 kV(transmission) line by the use of BPA power system analysis software,and then makes conclusion and proposes some suggestions.

• 根据大同电网2004年状况,用BPA电力系统分析软件对大同电网220 kV线路进行了N-1开断模拟分析,并根据分析结果做出了结论和建议。