故障录波器后台分析软件关键问题研究  

Research on key technique of fault recorder background analysis software

作　　者：郭振华[1] 江亚群[1] 杨帅雄[1] 梁勇超[2] 黄纯[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]湖南省电力公司超高压管理局,湖南长沙410002

出　　处：《电力系统保护与控制》2011年第19期73-78,共6页Power System Protection and Control

基　　金：湖南省自然科学基金资助项目(10JJ5055);湖南省电力科技重点项目(KZ09K15003)

摘　　要：对故障录波装置中录波分析软件设计中的难点和关键技术进行了研究。根据电力故障录波波形分析、显示的特点和要求,提出统一考虑波形缩放的波形显示曲线纵坐标的计算方法。采用计算机双缓存绘图方法,解决了传统Windows绘图闪烁问题,改善了显示效果。针对IECCOMTRADE格式录波文件分时段多频率采样的特点,提出基于离散傅里叶变换的双采样速率波形参数估计算法,实现了波形参数的跨时段计算。采用VisualC++6.0设计的电力故障录波分析系统人机界面友好,性能优良,已应用于工程实践。This paper studies the difficulties and key technique of designing power fault record analysis software of fault record device. Firstly, the algorithm of calculating waveform vertical coordinate with consideration of unified wavcform scaling is proposed according to the characteristics and requirements of the power fault record waveform analysis and displaying. Then the computer double buffer drawing method is adopted to avoid graphics flicker which happened in traditional Windows graphics plot. In the IEC COMTRADE formatted fault recording file, the recording device samples the signal with different sampling rates in different periods; in order to estimate cross-period signal parameters, a dual sampling rate parameter algorithm based on discrete Fourier transform is given. The power fault record analysis system developed by Visual C＋＋6.0 has friendly man-machine interface and excellent performance, which has been used in engineering practice. This work is supported by National Natural Science Foundation of Hunan Province （No. 10JJ5055）.

关 键 词：故障分析 录波数据 Vi sual C++6.0 双缓存 波形参数 傅里叶算法 

分 类 号：TM774[电气工程—电力系统及自动化]