用支路势能法和局部测量研究暂态稳定及识别临界割集  

Identification of critical cluster in transient stability study using line potential energy method

作　　者：原蔚鹏[1] 李玲[1] 陈家荣[2] 张尧[3] 

机构地区：[1]广东电网公司湛江供电局,广东湛江524005 [2]香港理工大学电机工程学系,中国香港 [3]华南理工大学电力学院,广东广州510640

出　　处：《中国电力》2009年第3期12-16,共5页Electric Power

摘　　要：暂态稳定问题近年来受到广泛关注,而暂态稳定分析中正确识别临界机群和临界割集对于准确识别电力系统中的薄弱环节和进行暂态稳定评估非常重要,采用支路势能法通过测量系统局部的功率、相角对临界割集进行识别,基于故障后轨迹给出支路稳定性指标,较好地识别了系统中的临界割集和薄弱环节,给出关键元件的稳定裕度,简化了计算,方便了暂态稳定性分析。Transient stability has been received much attention in recent decade. The identification of critical clusters and critical machines is of most important in transient stability assessment and control. The vulnerable segment and critical cluster were identified using the line potential energy method and useful stability indexes based on the post-fault trajectory were proposed. Since only a small amount of network data is required, no assumption of system models and instability model has to be made and multi-swing stability can also be considered. Not only can the conclusion of the system stability be given, but the quantification of the stability can be obtained by the stability index. This method and stability index shows a promising future of transient stability evaluation.

关 键 词：暂态稳定性 支路势能法 稳定性指标 临界割集 

分 类 号：TM712[电气工程—电力系统及自动化]