中国电机工程学报2024，Vol.44Issue(12)：4615-4625,中插3,12.DOI:10.13334/j.0258-8013.pcsee.223375
动态安全智能评估中故障位置特征表达的电气坐标距离保持
Distance Preservation of Electrical Coordinate for Fault Location Feature Representation in Intelligent Dynamic Security Assessment
摘要
Abstract
Power system dynamic security is strongly related to fault location.Accurate feature representation of fault location is crucial for developing a data-driven dynamic security assessment model.Based on the fault location representation method of electrical coordinate,this paper proposes the concept of strict distance preservation of fault location features and establishes the dynamic security assessment model considering distance preservation for fault location features.First,the full-dimensional electrical coordinate is proved to meet strict distance preservation under Chebyshev distance metric.Then,the relationship between the distance preservability of electrical coordinate and the dimension of the electrical coordinate under Chebyshev distance metric is analyzed.Finally,the assessment model of transient stability critical clearing time considering distance preservability is constructed based on K-nearest neighbor algorithm.With a provincial power grid as an example,the contribution of electrical coordinate distance preservability to the accuracy of dynamic security assessment is verified.关键词
故障位置特征表达/数据驱动的动态安全评估/电气坐标/距离保持/切比雪夫距离Key words
feature representation of fault location/data-driven dynamic security assessment/electrical coordinate/distance preservation/Chebyshev distance分类
信息技术与安全科学引用本文复制引用
齐航,任喆,李常刚,刘玉田..动态安全智能评估中故障位置特征表达的电气坐标距离保持[J].中国电机工程学报,2024,44(12):4615-4625,中插3,12.基金项目
国家重点研发计划(2022YFB2402705) （2022YFB2402705）
国家自然科学基金(52177096). National Key R&D Program of China(2022YFB2402705) （52177096）
Project Supported by National Natural Science Foundation of China(52177096). （52177096）
