本文關(guān)鍵詞： 斷路器 操動(dòng)機(jī)構(gòu) 延時(shí)機(jī)構(gòu) 優(yōu)化設(shè)計(jì) 自衛(wèi)能力　出處：《遼寧工程技術(shù)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：斷路器在電力系統(tǒng)中發(fā)揮著控制和保護(hù)的作用,是電力系統(tǒng)中必不可少的一部分。隨著我國(guó)電網(wǎng)輸電等級(jí)的不斷提高,高壓斷路器金屬短接時(shí)間普遍小于國(guó)家電網(wǎng)的技術(shù)規(guī)范,這一現(xiàn)狀給電網(wǎng)穩(wěn)定可靠的運(yùn)行帶來(lái)了安全隱患。國(guó)內(nèi)市場(chǎng)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(hù)裝置的動(dòng)作時(shí)間來(lái)實(shí)現(xiàn)。在這一背景下,本文旨在設(shè)計(jì)出體積小、結(jié)構(gòu)緊湊、穩(wěn)定可靠的延時(shí)機(jī)構(gòu),且該延時(shí)機(jī)構(gòu)利用液壓閥提供的液壓傳動(dòng)來(lái)滿足金屬短接時(shí)間的控制與調(diào)節(jié),實(shí)現(xiàn)對(duì)斷路器自衛(wèi)能力的要求。本課題的研究對(duì)象是實(shí)現(xiàn)斷路器自衛(wèi)能力的延時(shí)機(jī)構(gòu),依照液壓操動(dòng)機(jī)構(gòu)的設(shè)計(jì)規(guī)范對(duì)該機(jī)構(gòu)進(jìn)行設(shè)計(jì),并通過液壓傳動(dòng)的理論知識(shí)分析所設(shè)計(jì)的結(jié)構(gòu)的可行性；為提高試驗(yàn)成功率、節(jié)約成本,通過機(jī)械優(yōu)化設(shè)計(jì)的復(fù)合形法和正交試驗(yàn)法對(duì)延時(shí)機(jī)構(gòu)結(jié)構(gòu)參數(shù)進(jìn)行優(yōu)化。利用Autodesk Inventor和AMESim軟件建立優(yōu)化設(shè)計(jì)方案的仿真模型,并采用Autodesk Simulation CFD和AMESim軟件進(jìn)行仿真分析,分析該結(jié)構(gòu)內(nèi)部流場(chǎng)、壓力、速度的變化。與此同時(shí)還搭建了試驗(yàn)測(cè)試平臺(tái),通過試驗(yàn)驗(yàn)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(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM561

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