發(fā)布時間：2018-01-27 15:17

  本文關鍵詞： 狀態(tài)評價 模糊綜合評判 智能變電站 二次設備　出處：《華北電力大學》2015年碩士論文　論文類型：學位論文

【摘要】：目前電網正在向堅強智能電網的方向發(fā)展。隨著大量新建智能變電站的投入運行,智能二次設備的數量急劇增加。智能二次設備與常規(guī)二次設備存在著較大的差異,其狀態(tài)評價系統也應做出調整來適應這種差異。本文主要研究智能二次設備的狀態(tài)評估方法及其應用。首先梳理了電力設備檢修體制的發(fā)展過程,分析狀態(tài)檢修和定期檢修的不同,闡述繼電保護設備狀態(tài)檢修的必要性、可行性和優(yōu)越性,總結了繼電保護裝置進行狀態(tài)檢修的關鍵技術。其次,介紹智能變電站的體系結構,分析了在IEC61850標準規(guī)約基礎上的智能變電站二次設備狀態(tài)監(jiān)測和智能化裝置自檢技術,闡述繼電保護二次回路物理鏈路和邏輯鏈路的在線監(jiān)測原理和實施方式,設計出220kV長風智能變電站繼電保護在線監(jiān)測系統及實施流程,總結提煉出具體的可操作的在線監(jiān)測信息用于狀態(tài)評估。最后將模糊數學理論引入到智能變電站二次設備狀態(tài)評價中,基于模糊綜合評判思想,利用專家估測法和層次分析法為多層次的眾多評判因素建立權重集,根據評判因素的特性構造適當的模糊分布函數計算出模糊關系矩陣,對模糊合成運算的算子做了適當改進,根據最大隸屬原則對模糊綜合評判結果向量進行分析,并將分析結果進行了百分制數量化,從而清析直觀的呈現給狀態(tài)檢修決策者。通過對長風智能變電站繼電保護設備運行狀態(tài)的實際評估,證明該評判方法是合理有效的。在智能二次設備狀態(tài)評估中引入模糊數學理論,很好的發(fā)揮了智能設備在線監(jiān)測的優(yōu)勢,把人們對智能設備的定性判斷轉換成計算機能識別的精確語言,實現對智能設備運行狀態(tài)的定量分析,對電力企業(yè)施實標準化、規(guī)范化管理具有重要的意義。
[Abstract]:At present, the power grid is developing towards the direction of strong smart grid. With a large number of new intelligent substation put into operation. The number of intelligent secondary equipment has increased dramatically. There is a great difference between intelligent secondary equipment and conventional secondary equipment. The state evaluation system should also be adjusted to adapt to this difference. This paper mainly studies the status assessment method and its application of intelligent secondary equipment. Firstly, the development process of power equipment maintenance system is analyzed. This paper analyzes the difference between condition maintenance and periodic maintenance, expounds the necessity, feasibility and superiority of condition maintenance of relay protection equipment, and summarizes the key technology of condition maintenance of relay protection device. Secondly. This paper introduces the architecture of intelligent substation, and analyzes the secondary equipment condition monitoring and intelligent device self-checking technology based on IEC61850 standard. The on-line monitoring principle and implementation mode of physical link and logical link in secondary circuit of relay protection are described. The on-line monitoring system and implementation flow of relay protection for 220 kV Changfeng intelligent substation are designed. Finally, the fuzzy mathematics theory is introduced into the secondary equipment condition evaluation of intelligent substation, based on the fuzzy comprehensive evaluation idea. The expert estimation method and the analytic hierarchy process (AHP) are used to establish the weight set for the multi-level evaluation factors, and the fuzzy relation matrix is calculated according to the characteristics of the evaluation factors. Based on the principle of maximum membership, the fuzzy synthetic evaluation result vector is analyzed, and the analysis results are quantified by the percentile system. Through the analysis of the situation maintenance decision makers, through the Changfeng intelligent substation relay protection equipment operation status of the actual evaluation. It is proved that the evaluation method is reasonable and effective. The fuzzy mathematics theory is introduced into the state evaluation of intelligent secondary equipment, and the advantage of on-line monitoring of intelligent equipment is well brought into play. It is of great significance to convert the qualitative judgment of intelligent equipment into an accurate language that can be recognized by computer, to realize the quantitative analysis of the running state of intelligent equipment and to standardize and standardize the operation of electric power enterprises.
【學位授予單位】：華北電力大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM76;TM63

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本文編號：1468772