本文選題：光伏發(fā)電　切入點：運維設(shè)計　出處：《沈陽農(nóng)業(yè)大學(xué)》2017年碩士論文

【摘要】：太陽能是當(dāng)今最具發(fā)展前景的可替代能源,具有無污染、可再生的諸多優(yōu)點。太陽能光伏發(fā)電近年來發(fā)展迅速技術(shù)日趨成熟,但光伏電站仍然存在成本高、效率低、經(jīng)濟性差等問題,嚴(yán)重制約其進(jìn)一步推廣與應(yīng)用。究其原因有二,一是光伏系統(tǒng)容易受到環(huán)境因素的影響,如何利用氣象因素判斷光伏系統(tǒng)運行趨勢進(jìn)而采取調(diào)度措施是提高光伏電站經(jīng)濟性的研究重點;二是光伏電站系統(tǒng)結(jié)構(gòu)復(fù)雜,如果不加以精心維護將大大縮短光伏電站的運營壽命,造成經(jīng)濟上的損失。本文以沈陽某光伏發(fā)電示范電站為研究對象,通過對其監(jiān)測數(shù)據(jù)及運維情況的分析和研究,總結(jié)影響系統(tǒng)發(fā)電的原因、制定適用于中小型光伏發(fā)電電站的運行維護方案,實踐光伏系統(tǒng)全周期運營理念。將對發(fā)展規(guī)劃和產(chǎn)業(yè)調(diào)整以及激勵和引導(dǎo)國家光伏行業(yè)的健康發(fā)展,具有一定的指導(dǎo)意義。本文從上述兩個方面入手,進(jìn)行的主要研究如下:(1)介紹了光伏電站的主要構(gòu)造,明確了光伏系統(tǒng)中如光伏組件、逆變器等重要部分,簡要介紹了光伏系統(tǒng)獲取監(jiān)測數(shù)據(jù)的監(jiān)控系統(tǒng)。遵循光伏電站全周期思想,將光伏系統(tǒng)檢測與運維加入光伏電站運營計劃中,為中小型光伏電站設(shè)計了完善的光伏系統(tǒng)運維方案,并對以沈陽某光伏示范電站的運維數(shù)據(jù)為例,對中小型光伏發(fā)電系統(tǒng)的運行狀況予以評價。(2)在光伏電站監(jiān)測系統(tǒng)的監(jiān)測數(shù)據(jù)中,收集發(fā)電功率、發(fā)電時間、發(fā)電量、環(huán)境數(shù)據(jù)、發(fā)電效率等光伏系統(tǒng)重要參數(shù),對光伏發(fā)電系統(tǒng)的輸出特性進(jìn)行分析研究,總結(jié)出不同季節(jié)、不同天氣等條件下系統(tǒng)的發(fā)電情況,探究光伏系統(tǒng)與氣候條件深層關(guān)系。(3)從環(huán)境因素對發(fā)電功率的影響入手,分析太陽輻照強度、環(huán)境溫度、風(fēng)速、風(fēng)向以及氣壓等氣象因子對發(fā)電功率的影響程度,并且對比分析氣象因素對其作用程度變化的規(guī)律,建立氣象因子與發(fā)電功率之間的回歸模型,為光伏發(fā)電系統(tǒng)的功率進(jìn)行短期預(yù)測提供理論依據(jù)。
[Abstract]:Solar energy is the most promising alternative energy with many advantages of non-pollution and renewable.The rapid development of solar photovoltaic power generation technology is becoming more and more mature in recent years, but photovoltaic power plants still have the problems of high cost, low efficiency, poor economy and so on, which seriously restrict their further promotion and application.There are two reasons for this: one is that photovoltaic system is easy to be affected by environmental factors, how to use meteorological factors to judge the operating trend of photovoltaic system and then take dispatching measures is the focus of research to improve the economy of photovoltaic power station;Second, the structure of photovoltaic power plant system is complex, if it is not carefully maintained, the operating life of photovoltaic power station will be shortened greatly, resulting in economic losses.This paper takes a demonstration photovoltaic power station in Shenyang as the research object, through the analysis and research of its monitoring data and operation and maintenance situation, summarizes the reasons that affect the power generation of the system, and formulates the operation and maintenance scheme suitable for the small and medium-sized photovoltaic power station.Practice the whole cycle operation concept of photovoltaic system.It will be of guiding significance to the development planning and industrial adjustment, as well as to encourage and guide the healthy development of the national photovoltaic industry.Starting from the above two aspects, the main research in this paper is as follows: 1) the main structure of photovoltaic power station is introduced, and the important parts of photovoltaic system such as photovoltaic module, inverter and so on are defined.This paper briefly introduces the monitoring system for photovoltaic system to obtain monitoring data.According to the idea of whole cycle of photovoltaic power station, the detection and operation of photovoltaic system are added into the operation plan of photovoltaic power station, and a perfect operation and maintenance scheme of photovoltaic system is designed for small and medium-sized photovoltaic power station. The operation and maintenance data of a photovoltaic demonstration power station in Shenyang is taken as an example.In the monitoring data of photovoltaic power station monitoring system, the important parameters of photovoltaic system, such as generation power, generation time, electricity generation, environmental data, generation efficiency and so on, are collected.The output characteristics of photovoltaic power generation system are analyzed and studied, and the power generation situation of the system under different seasons and different weather conditions is summarized. The deep relationship between photovoltaic system and climate conditions is explored.The influence of solar radiation intensity, ambient temperature, wind speed, wind direction and pressure on power generation is analyzed.The regression model between meteorological factors and generation power is established to provide theoretical basis for short-term power prediction of photovoltaic power generation system.
【學(xué)位授予單位】：沈陽農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM615
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本文編號：1728076