摘要
将决策树算法引入到电网安全评估中,首先针对某地区的实际电网模型,在不同的运行方式和负荷水平下,计算扰动后的系统响应,生成安全评估用数据库,然后针对此数据库应用决策树算法提取安全评估规则,可靠性测试证明此方法有效可行,最后通过对比有无PMU测量参数时决策树的性能说明了PMU对于提高系统可观测性的作用。
Decision tree algorithm was introduced into power grid security assessment. Under different operating conditions and load levels, the system responses of a certain area were calculated to construct a database for security assessment. Decision rules were then extracted from this database using decision tree algorithm. The feasibility of this method was verified by reliability test. Finally, PMU was proved helpful in improving system＇s observability by comparing decision trees＇ performance with and without PMU measurements.
出处
《能源工程》
2009年第5期1-5,共5页
Energy Engineering
关键词
安全评估
决策树
相角测量单元
数据挖掘
securily assessment
decision tree
phasor measurement unit
data mining
