PMU量测质量评估方法及静动态测试系统研究

发布时间：2018-01-05 15:06

本文关键词：PMU量测质量评估方法及静动态测试系统研究　出处：《华北电力大学(北京)》2014年硕士论文　论文类型：学位论文

【摘要】：同步相量测量装置(Phasor Measurement Unit, PMU)因其量测的同步性与快速性,在世界范围内得到了广泛应用,为解决当代复杂大电网动态安全监控问题提供了新的技术手段。特别是在我国,已有约2500台PMU在电网中投入运行,PMU数量和WAMS系统规模为世界之最,为我国研究应用基于WAMS的系统监控措施创造了条件,而PMU的动态特性及数据质量成为制约相关应用的重要因素。因此,如何有效检测PMU装置的动态量测特性并对量测质量进行评估分析已成为当下亟需解决的关键问题。论文重点针对PMU量测质量评估方法及静动态检测平台开展研究。论文通过对电力系统典型静动态运行特征的分析,抽象出静动态信号模型；初步探讨了PMU在系统动态条件下的量测特性,提出了PMU分类问题；并依此提出了全面的PMU静动态测试方案,同时给出了合理的测试评价指标。此外,根据误差理论及DFT相量算法静动态量测特性,提出了正态分布契合指数NFI用以评估PMU量测质量,并可利用经验模态分解EMD法对因相量算法造成的系统误差进行分析提取。随后,在信号模型和测试方案基础上,进行了PMU静动态自动测试系统的搭建工作,解决了时间同步补偿、测试仪自带功能整合、PMU离线数据提取等重难点问题,实现了对PMU装置静动态量测性能的灵活自动检测。基于PMU静动态自动测试系统,本文对国内主流厂家PMU装置进行了集中测试,并利用论文中提出的量测误差评估分析方法对测试数据进行了分析,反映出目前PMU装置存在的静动态量测问题。
[Abstract]:Synchronous phasor measurement unit (Phasor Measurement Unit, PMU) synchronization and fast because of its measurement, has been widely used in the world, provides new technical means for solving the complex large power grid dynamic security monitoring problem. Especially in China, has about 2500 sets of PMU put into operation in power grid in PMU, the number and scale of the WAMS system in the world, for the application research of China's monitoring system based on WAMS measures to create the conditions, and the dynamic characteristic and the data quality of PMU has become an important factor restricting related applications. Therefore, how to effectively detect PMU dynamic measuring apparatus for measuring characteristics and quality assessment the analysis has become a key issue in the current urgent. This paper focuses on the PMU measurement quality evaluation method and the static and dynamic testing platform to carry out research. Based on the analysis of typical power system static and dynamic operating characteristics of the pump As a static and dynamic signal model; discusses the characteristics of PMU in dynamic condition, put forward the PMU classification problem; and puts forward a comprehensive PMU static and dynamic test scheme is given a reasonable evaluation index. In addition, according to the error theory and DFT phasor measurement algorithm of static and dynamic characteristics. The normal distribution fit index NFI for evaluating the PMU measurement quality, and decomposition of EMD was used to analyze the system error due to phase extraction algorithm by using empirical mode. Then, based on the signal model and test scheme, the static and dynamic PMU automatic test system is built up, to solve the time synchronization compensation test instrument with functional integration, problem PMU offline data extraction, realizes flexible automatic detection of dynamic content on the PMU device static performance. PMU static and dynamic automatic test system based on the domestic The mainstream manufacturers PMU device has been tested centrally. The test data are analyzed by the method of measurement error assessment and analysis, which reflects the static and dynamic measurement problems of PMU devices.

【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM933.313

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