电压暂降分类算法及应用分析  

Classification Algorithm and Application Analysis of Voltage Sag

作　　者：刘亚丽[1] 于光耀[1] 李国栋[1] 汪颖[2] 禹华西 LIU Yali;YU Guangyao;LI Guodong;WANG Ying;YU Huaxi(Tianjin Electrical Power Research Institute,State Grid Tianjin Electric Power Company,Tianjin 300384,China;College of Electrical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]国网天津市电力公司电力科学研究院,天津300384 [2]四川大学电气工程学院,成都610065

出　　处：《电力电容器与无功补偿》2022年第5期123-131,共9页Power Capacitor & Reactive Power Compensation

基　　金：国网天津市电力公司科技项目(KJ19-1-08)。

摘　　要：电压暂降类型是暂降事件的重要特征,为电网侧故障类型识别、用户侧敏感设备耐受能力测试及电压暂降治理方案的制定等,提供决策信息。本文分析了计算电压暂降类型的5种典型方法,并将不同算法应用于仿真数据和216组实测数据。基于计算结果提出了算法存在的问题。仿真和实测数据的计算结果表明,相位跳变较大和跌落深度较浅是影响算法结果的重要因素。将不同算法应用于实测数据时,结果存在很大差异,尚未达到电力系统的实用要求,还需继续研究新的暂降类型计算方法,以应用于电能质量监测系统。The type of voltage sag is an important feature of sag events,which provides decision-making information for fault type identification at grid side,withstand capability test of sensitive equipment of sensitive equipment at user side and formulation of voltage sag control scheme etc.In this paper,five kinds of typical methods for calculating voltage sag types are analyzed and different algorithms are applied to simulation data and 216 sets of measured data.Based on the calculation results,the problem existed in the algorithms is raised.It is shown by the calculation results of simulation and measured data that larger phase jump and shallower drop depth are important factors affecting the results of the algorithm.When different algorithms are applied to the actually measured data,the results have big difference and have not yet reached the practical requirements of the power system.It is also necessary to develop new methods for calculating the sag type so to apply them to power quality monitoring systems.

关 键 词：电压暂降类型 电能质量 跌落深度 实测数据 相位跳变 

分 类 号：TM714.2[电气工程—电力系统及自动化]