發(fā)布時(shí)間：2018-04-27 19:03

  本文選題：電氣設(shè)備 + 狀態(tài)檢修��； 參考：《河北科技大學(xué)》2017年碩士論文

【摘要】：電力系統(tǒng)的可靠運(yùn)行與國(guó)民經(jīng)濟(jì)的命脈相連,隨著國(guó)民經(jīng)濟(jì)的不斷發(fā)展,對(duì)電力系統(tǒng)的安全經(jīng)濟(jì)運(yùn)行的要求越來(lái)越高�；鹆Πl(fā)電仍然是電力系統(tǒng)中裝機(jī)容量最大,對(duì)系統(tǒng)穩(wěn)定性影響最大的重要環(huán)節(jié)。為了提升電力系統(tǒng)的可靠性與經(jīng)濟(jì)性,針對(duì)火力發(fā)電廠電氣設(shè)備檢修不再單獨(dú)依靠最初的故障檢修與定期檢修,而采取可靠性更好的狀態(tài)檢修。狀態(tài)檢修依據(jù)電氣設(shè)備運(yùn)行時(shí)在線監(jiān)測(cè)的數(shù)據(jù)和準(zhǔn)確的評(píng)估狀態(tài)給出合理的檢修措施。本課題根據(jù)火電廠中主要電氣設(shè)備類型,分析其各自的具體的運(yùn)行指標(biāo),并根據(jù)改進(jìn)的層次分析法確定這些指標(biāo)的權(quán)重,改進(jìn)層次法基于三坐標(biāo)建立對(duì)稱的比較矩陣,利用最優(yōu)傳遞矩陣求解擬優(yōu)一致矩陣,有效的減少了迭代次數(shù),提高了收斂速度。為了防止劣化指標(biāo)的被淹沒(méi)現(xiàn)象發(fā)生,采用變權(quán)公式修正指標(biāo)的權(quán)重,既考慮人為主觀因素又考慮電氣設(shè)備運(yùn)行的客觀因素,使最終的指標(biāo)權(quán)重更加合理。在電氣設(shè)備的評(píng)估模型的確定中本課題綜合了灰色理論與云模型的具體優(yōu)點(diǎn),提出了灰云模型作為最終的狀態(tài)評(píng)估模型,該模型將定性概念中體現(xiàn)的隨機(jī)性與模糊性轉(zhuǎn)換為定量的數(shù)據(jù),提高了對(duì)不確定性數(shù)據(jù)處理的客觀性。并利用電氣設(shè)備的經(jīng)濟(jì)壽命與年運(yùn)行最小成本費(fèi)用作為比較檢修方案中的重要依據(jù),根據(jù)電氣設(shè)備的具體運(yùn)行情況確定電氣設(shè)備的最佳檢修方案。最后利用了火電廠中的一臺(tái)110kV變壓器作為實(shí)例,驗(yàn)證了該狀態(tài)檢修方案的實(shí)用性及可靠性。
[Abstract]:The reliable operation of electric power system is connected with the lifeblood of national economy. With the development of national economy, the requirement of safe and economical operation of power system is more and more high. Thermal power generation is still the most important link in power system with the largest installed capacity and the greatest influence on system stability. In order to improve the reliability and economy of power system, the maintenance of electric equipment in thermal power plant is no longer dependent on the original fault maintenance and periodic maintenance alone, but the condition maintenance with better reliability is adopted. Based on the on-line monitoring data and the accurate evaluation of the condition of electrical equipment, the condition maintenance measures are given. According to the main types of electrical equipment in thermal power plants, the specific operation indexes are analyzed, and the weights of these indexes are determined according to the improved Analytic hierarchy process (AHP), and the improved hierarchy method is used to establish a symmetrical comparison matrix based on three coordinates. The optimal transfer matrix is used to solve the quasi-optimal uniform matrix, which effectively reduces the number of iterations and improves the convergence speed. In order to prevent the inundation of the deterioration index, the weight of the index is modified by the variable weight formula, which takes into account both the subjective factors and the objective factors of the operation of the electrical equipment, so that the weight of the final index is more reasonable. In the course of determining the evaluation model of electrical equipment, this subject integrates the specific advantages of grey theory and cloud model, and puts forward the grey cloud model as the final state evaluation model. The model converts the randomness and fuzziness embodied in the qualitative concept into quantitative data and improves the objectivity of processing uncertain data. The economic life of electrical equipment and the minimum annual operating cost are used as the important basis of the comparative maintenance scheme, and the optimal maintenance scheme of electrical equipment is determined according to the specific operation of electrical equipment. Finally, a 110kV transformer in a thermal power plant is used as an example to verify the practicability and reliability of the condition based maintenance scheme.
【學(xué)位授予單位】：河北科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM621

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本文編號(hào)：1811932