本文選題：負(fù)荷側(cè)控制 + 電網(wǎng)友好��； 參考：《浙江大學(xué)》2015年碩士論文

【摘要】：隨著國(guó)民經(jīng)濟(jì)的高速發(fā)展,電力工業(yè)發(fā)展進(jìn)入嶄新的階段,電網(wǎng)規(guī)模顯著擴(kuò)大,結(jié)構(gòu)上不斷擴(kuò)張。同時(shí)隨著可再生能源接入,使得電網(wǎng)尤其是用戶側(cè)變得更加復(fù)雜。從另一方面來(lái)說(shuō),負(fù)荷也可以作為一種資源來(lái)響應(yīng)電網(wǎng)的調(diào)度,甚至是自主地響應(yīng)電網(wǎng)的需求,使得負(fù)荷本身成為一種對(duì)于電網(wǎng)友好的資源。同時(shí)電力電子技術(shù)在不斷發(fā)展讓更多變頻電器,如變頻空調(diào)、變頻冰箱進(jìn)入人們的生活。變頻技術(shù)的逐步成熟使變頻電器在市場(chǎng)上占有的比重逐年升高。因此,針對(duì)變頻類溫控負(fù)荷的研究,對(duì)于緩解電網(wǎng)壓力改善電網(wǎng)運(yùn)行狀態(tài)具有深遠(yuǎn)的意義。 本文首先分析了電機(jī)驅(qū)動(dòng)型溫控類負(fù)荷在電網(wǎng)年、月、日負(fù)荷曲線中的特性,以空調(diào)負(fù)荷為例,分析季節(jié)、溫度變化對(duì)于其負(fù)荷特性的影響。重點(diǎn)闡述其在電網(wǎng)日負(fù)荷曲線的占有結(jié)構(gòu),得出其廣泛分布且數(shù)量巨大的結(jié)論。其次對(duì)空調(diào)類負(fù)荷介紹了其負(fù)荷建模的相應(yīng)理論與方法,分析其在電網(wǎng)中的模型比較幾種建模方法針對(duì)計(jì)算精度、復(fù)雜程度,推導(dǎo)了感應(yīng)電機(jī)并聯(lián)等效電路模型。之后,提出了針對(duì)電網(wǎng)有功缺失情況下,在負(fù)荷側(cè)實(shí)時(shí)檢測(cè)電器設(shè)備所在區(qū)域的電網(wǎng)頻率同時(shí)自主控制負(fù)荷運(yùn)行狀態(tài)的方法,結(jié)論表明該方法可以很好的補(bǔ)充電網(wǎng)緊急情況下有功功率的缺額,減少電網(wǎng)調(diào)度的頻繁程度。最后針對(duì)之前所建的空調(diào)類負(fù)荷感應(yīng)電機(jī)模型,利用算例分析該控制方法在復(fù)雜電網(wǎng)中對(duì)于提高電網(wǎng)暫態(tài)穩(wěn)定性的優(yōu)勢(shì)。
[Abstract]:With the rapid development of the national economy, the electric power industry has entered a new stage. At the same time, with the renewable energy access, the power grid, especially the user side, becomes more complex. On the other hand, load can also be used as a resource to respond to the dispatch of the power grid, or even to respond to the demand of the power grid independently, making the load itself a kind of grid friendly resource. At the same time, the development of power electronics technology makes more frequency conversion appliances, such as frequency conversion air conditioning, frequency conversion refrigerators into people's lives. The frequency conversion technology gradually matures causes the frequency conversion electric appliance in the market the proportion to rise year by year. Therefore, the research of temperature control load with frequency conversion is of great significance to alleviate the pressure of power grid and improve the operation state of power network. In this paper, the characteristics of motor driven temperature control load in the load curve of year, month and day are analyzed. Taking air conditioning load as an example, the influence of season and temperature on load characteristics is analyzed. The occupation structure of daily load curve in power network is expounded, and the conclusion that it is widely distributed and large in quantity is obtained. Secondly, the paper introduces the corresponding theory and method of load modeling for air conditioning, and analyzes the model comparison in power grid. According to the accuracy and complexity of calculation, the parallel equivalent circuit model of induction motor is deduced. Then, the method of real-time detecting the power network frequency in the area where the electrical equipment is located is put forward to control the load operation state independently under the condition of the lack of active power in the power grid. The results show that this method can supplement the active power deficit and reduce the frequency of power dispatching. Finally, based on the previous model of air-conditioner load induction motor, the advantages of the control method in improving the transient stability of the power system in complex power systems are analyzed by using a numerical example.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM714

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