基于小波变换的电网模型一致性稽查研究  

Research on Wavelet Transform-Based Audit of Grid Model Consistency

作　　者：柴雁欣 崔焱 李学龄 CHAI Yanxin;CUI Yan;LI Xueling(Platform Security Branch,CSG Digital Grid Research Institute Co.,Ltd.,Guangzhou 510663,China)

机构地区：[1]南方电网数字电网研究院有限公司平台安全分公司,广东广州510663

出　　处：《自动化仪表》2023年第4期84-88,94,共6页Process Automation Instrumentation

摘　　要：为了对电网系统进行管理,对电网模型中的畸变信号进行了稽查检测。阐述了电网畸变信号检测的研究现状,在电网模型畸变信号的稽查方法中,研究了面向电网信号的小波变换能量指标问题。重点采用小波变换方法对信号电气量的小波分析指标进行研究,并结合曲线拟合方法对稽查方法进行优化设计。仿真结果表明,该稽查方法可有效检测电网故障,避免了电路的误动断路,提高了基波信号与原始信号的一致性。该研究为电网模型的一致性稽查提供了参考。To manage the grid system,the detection of distortion signals in the grid model is audited.The current state of research on grid distortion signal detection is described,and the problem of wavelet transform energy metrics for grid signals is researched in the context of the audit method for grid model distortion signals.The wavelet transform method is mainly used to study the wavelet analysis index of the signal electrical quantities,and the curve fitting method is combined to optimize the design of the audit method.The simulation results show that the audit method can effectively detect grid faults,avoid mis-activated circuit breakage,improve the consistency of the fundamental signal with the original signal.The research provides refrence for the consistency audit of grid models.

关 键 词：小波变换 电网模型 电网畸变信号 电力调度 一致性稽查 曲线拟合 

分 类 号：TH17[机械工程—机械制造及自动化]