本文關鍵詞： 斷路器 操動機構 延時機構 優(yōu)化設計 自衛(wèi)能力　出處：《遼寧工程技術大學》2015年碩士論文　論文類型：學位論文

【摘要】：斷路器在電力系統(tǒng)中發(fā)揮著控制和保護的作用,是電力系統(tǒng)中必不可少的一部分。隨著我國電網輸電等級的不斷提高,高壓斷路器金屬短接時間普遍小于國家電網的技術規(guī)范,這一現狀給電網穩(wěn)定可靠的運行帶來了安全隱患。國內市場迫切需要具有自衛(wèi)能力的高壓斷路器,并要求不能依靠延緩保護裝置的動作時間來實現。在這一背景下,本文旨在設計出體積小、結構緊湊、穩(wěn)定可靠的延時機構,且該延時機構利用液壓閥提供的液壓傳動來滿足金屬短接時間的控制與調節(jié),實現對斷路器自衛(wèi)能力的要求。本課題的研究對象是實現斷路器自衛(wèi)能力的延時機構,依照液壓操動機構的設計規(guī)范對該機構進行設計,并通過液壓傳動的理論知識分析所設計的結構的可行性；為提高試驗成功率、節(jié)約成本,通過機械優(yōu)化設計的復合形法和正交試驗法對延時機構結構參數進行優(yōu)化。利用Autodesk Inventor和AMESim軟件建立優(yōu)化設計方案的仿真模型,并采用Autodesk Simulation CFD和AMESim軟件進行仿真分析,分析該結構內部流場、壓力、速度的變化。與此同時還搭建了試驗測試平臺,通過試驗驗證其可行性。
[Abstract]:Circuit breakers play an important role in the control and protection of power system and are an indispensable part of power system. With the continuous improvement of transmission grade of power grid in China, the metal short connection time of high voltage circuit breaker is generally smaller than the technical specification of national power grid. This situation brings security risks to the stable and reliable operation of the power grid. The domestic market urgently needs high-voltage circuit breakers with self-defense capability and requires that it cannot be realized by delaying the operation time of the protective devices. The purpose of this paper is to design a stable and reliable delay mechanism with small size, compact structure, and the hydraulic transmission provided by the hydraulic valve is used to meet the control and adjustment of the metal short connection time. The research object of this subject is the delay mechanism to realize the self-defense ability of circuit breaker, which is designed according to the design specification of hydraulic operating mechanism. The feasibility of the designed structure is analyzed through the theoretical knowledge of hydraulic transmission, and in order to improve the success rate of the test and save the cost, The structural parameters of the delay mechanism are optimized by the complex method and orthogonal test method of mechanical optimization design. The simulation model of the optimal design scheme is established by using Autodesk Inventor and AMESim software, and the simulation analysis is carried out by Autodesk Simulation CFD and AMESim software. The variation of flow field, pressure and velocity in the structure is analyzed. At the same time, a test platform is built to verify its feasibility.
【學位授予單位】：遼寧工程技術大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM561

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本文編號：1497016