本文關(guān)鍵詞：PMU量測質(zhì)量評估方法及靜動態(tài)測試系統(tǒng)研究　出處：《華北電力大學(xué)(北京)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 同步相量測量裝置(PMU) 量測質(zhì)量 測試系統(tǒng) DFT算法 系統(tǒng)誤差

【摘要】：同步相量測量裝置(Phasor Measurement Unit, PMU)因其量測的同步性與快速性,在世界范圍內(nèi)得到了廣泛應(yīng)用,為解決當(dāng)代復(fù)雜大電網(wǎng)動態(tài)安全監(jiān)控問題提供了新的技術(shù)手段。特別是在我國,已有約2500臺PMU在電網(wǎng)中投入運(yùn)行,PMU數(shù)量和WAMS系統(tǒng)規(guī)模為世界之最,為我國研究應(yīng)用基于WAMS的系統(tǒng)監(jiān)控措施創(chuàng)造了條件,而PMU的動態(tài)特性及數(shù)據(jù)質(zhì)量成為制約相關(guān)應(yīng)用的重要因素。因此,如何有效檢測PMU裝置的動態(tài)量測特性并對量測質(zhì)量進(jìn)行評估分析已成為當(dāng)下亟需解決的關(guān)鍵問題。論文重點(diǎn)針對PMU量測質(zhì)量評估方法及靜動態(tài)檢測平臺開展研究。論文通過對電力系統(tǒng)典型靜動態(tài)運(yùn)行特征的分析,抽象出靜動態(tài)信號模型；初步探討了PMU在系統(tǒng)動態(tài)條件下的量測特性,提出了PMU分類問題；并依此提出了全面的PMU靜動態(tài)測試方案,同時給出了合理的測試評價指標(biāo)。此外,根據(jù)誤差理論及DFT相量算法靜動態(tài)量測特性,提出了正態(tài)分布契合指數(shù)NFI用以評估PMU量測質(zhì)量,并可利用經(jīng)驗(yàn)?zāi)B(tài)分解EMD法對因相量算法造成的系統(tǒng)誤差進(jìn)行分析提取。隨后,在信號模型和測試方案基礎(chǔ)上,進(jìn)行了PMU靜動態(tài)自動測試系統(tǒng)的搭建工作,解決了時間同步補(bǔ)償、測試儀自帶功能整合、PMU離線數(shù)據(jù)提取等重難點(diǎn)問題,實(shí)現(xiàn)了對PMU裝置靜動態(tài)量測性能的靈活自動檢測。基于PMU靜動態(tài)自動測試系統(tǒng),本文對國內(nèi)主流廠家PMU裝置進(jìn)行了集中測試,并利用論文中提出的量測誤差評估分析方法對測試數(shù)據(jù)進(jìn)行了分析,反映出目前PMU裝置存在的靜動態(tài)量測問題。
[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.

【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM933.313

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