發(fā)布時間：2018-04-16 07:26

  本文選題：電力變壓器 + 運輸安全��； 參考：《山東大學(xué)》2017年碩士論文

【摘要】：隨著能源和電網(wǎng)事業(yè)的蓬勃發(fā)展,國內(nèi)外投入電力變壓器的數(shù)量、容量逐年增加,僅國內(nèi)容量每年就高達(dá)上億千伏安。作為輸變電站的主設(shè)備,從生產(chǎn)至投運中間的運輸、安裝過程是否安全是變壓器正常運行的前提條件。電力變壓器,尤其是特高壓、大容量的設(shè)備,在運輸過程中的速度、加速度、傾斜度及內(nèi)部氣體壓力等是影響其運輸安全的關(guān)鍵參數(shù)。課題通過參與山東電力設(shè)備有限公司的科技項目,開發(fā)了一種傳感器監(jiān)測、數(shù)據(jù)通訊、網(wǎng)絡(luò)發(fā)布、移動應(yīng)用終端等技術(shù)相關(guān)的電力變壓器運輸狀態(tài)監(jiān)測控制系統(tǒng),實現(xiàn)了運輸狀態(tài)監(jiān)測及異常報警功能,結(jié)束了目前離線式巡檢的現(xiàn)況。同時課題建立了電力變壓器運輸監(jiān)測的運動模型,提出一種通過對歷史加速度進(jìn)行線性擬合來預(yù)測加速度的算法,并推導(dǎo)出了預(yù)測加速度的公式。本次課題的主要研究內(nèi)容如下:(1)介紹了目前國內(nèi)外電力變壓器運輸監(jiān)測現(xiàn)狀,分析了目前運輸過程中可能會影響電力變壓器運輸安全的隱患,設(shè)計了電力變壓器運輸監(jiān)測及控制系統(tǒng);(2)進(jìn)行了運輸監(jiān)測的需求分析,提出了系統(tǒng)的整體設(shè)計,并對系統(tǒng)組成部分的設(shè)計功能進(jìn)行了詳細(xì)描述;(3)開發(fā)完成了系統(tǒng)方案的硬件部分,主要有傳感器型數(shù)字采集電路、電平轉(zhuǎn)換穩(wěn)壓電源、中央處理器外圍電路、近距離無線通訊電路,并對電路中元件選擇與參數(shù)選取加以說明;(4)開發(fā)完成了系統(tǒng)方案的軟件流程圖,根據(jù)通訊協(xié)議完成了各模塊間的通訊編程,并對程序的主要功能模塊進(jìn)行說明;(5)根據(jù)近距離無線組網(wǎng)的技術(shù)特點,結(jié)合變壓器運輸安全的參數(shù)要求,設(shè)計合適的網(wǎng)絡(luò)結(jié)構(gòu),確定各模塊間的通訊協(xié)議,并對功能的執(zhí)行過程進(jìn)行具體描述;(6)根據(jù)變壓器運輸監(jiān)測的歷史數(shù)據(jù),以加速度為例,通過對過往數(shù)據(jù)的線性擬合,推測未來加速度的值,以此來預(yù)測加速度的趨勢,為保證運輸安全提供數(shù)據(jù)支撐。并對歷史數(shù)據(jù)分析論證,驗證系統(tǒng)有效性。整個監(jiān)測控制系統(tǒng)從開始設(shè)計至開發(fā)完成,經(jīng)過不斷修改完善,已先后多次應(yīng)用于公司電力變壓器運輸,現(xiàn)場收集的數(shù)據(jù)還用于對數(shù)學(xué)模型的驗證。系統(tǒng)由變壓器運輸狀態(tài)監(jiān)測終端、沖撞記錄儀、監(jiān)控服務(wù)軟件、具備外網(wǎng)地址的云端服務(wù)器等組成,終端樣機通過了國家繼電保護及自動化設(shè)備質(zhì)量監(jiān)測檢驗中心的檢驗。到目前,所有應(yīng)用系統(tǒng)運行正常,已于2017年3月通過山東省科技廳驗收,技術(shù)成果鑒定為國內(nèi)先進(jìn)水平。
[Abstract]:With the rapid development of energy and power grid industry, the number and capacity of power transformers are increasing year by year, and the domestic capacity is as high as 100 million KVA each year.As the main equipment of the transmission substation, whether the installation process is safe or not is the prerequisite for the normal operation of the transformer from production to operation.Power transformers, especially UHV and large capacity equipment, are the key parameters that affect the transportation safety of power transformers, such as speed, acceleration, inclination and internal gas pressure.By taking part in the scientific and technological project of Shandong Electric Power equipment Co., Ltd, a power transformer transportation condition monitoring and control system related to sensor monitoring, data communication, network publishing, mobile application terminal and so on has been developed.The monitoring of transportation condition and the abnormal alarm function are realized, and the present condition of off-line inspection is ended.At the same time, the motion model of power transformer transportation monitoring is established, and an algorithm of predicting acceleration by linear fitting of historical acceleration is proposed, and the formula of predicting acceleration is deduced.The main research contents of this subject are as follows: (1) the present situation of power transformer transport monitoring at home and abroad is introduced, and the hidden dangers that may affect the transportation safety of power transformer during the current transportation process are analyzed.This paper designs the power transformer transportation monitoring and control system, analyses the requirement of the transportation monitoring, and puts forward the whole design of the system.And the design function of the system component is described in detail. The hardware part of the system scheme is developed and completed, including the sensor digital acquisition circuit, the level conversion stabilized power supply, the peripheral circuit of the central processor.The software flow chart of the system is developed, and the communication program among the modules is completed according to the communication protocol.The main function modules of the program are explained. According to the technical characteristics of the close-range wireless network and the requirements of transformer transportation safety parameters, the appropriate network structure is designed, and the communication protocol between the modules is determined.According to the historical data of transformer transportation monitoring, the acceleration is taken as an example, and the future acceleration is predicted by linear fitting of the past data, so as to predict the trend of acceleration.Provide data support to ensure transportation safety.And the historical data analysis and demonstration, verify the effectiveness of the system.The whole monitoring and control system was designed from the beginning to the completion of development. After continuous modification and improvement, it has been applied to the power transformer transportation of the company for many times. The data collected in the field is also used to verify the mathematical model.The system consists of transformer transport status monitoring terminal, collision recorder, monitoring service software, cloud server with external network address, etc. The terminal prototype has passed the inspection of national relay protection and automation equipment quality monitoring and inspection center.Up to now, all the application systems are running normally and have passed the Shandong Science and Technology Department's acceptance in March 2017, and the technical achievements have been appraised to the advanced level in China.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM41

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