【摘要】：分布式光伏是“十三五”期間我國(guó)光伏行業(yè)發(fā)展的重點(diǎn),加快推進(jìn)分布式光伏的應(yīng)用有利于緩解能源危機(jī)與環(huán)境惡化。隨著大規(guī)模分布式光伏接入配電網(wǎng),其波動(dòng)性與隨機(jī)性勢(shì)必會(huì)使電能質(zhì)量問題更為突出,對(duì)電網(wǎng)的潮流、電壓、損耗等方面產(chǎn)生不利影響。利用儲(chǔ)能系統(tǒng)可實(shí)現(xiàn)能量的時(shí)空平移,將其與光伏結(jié)合可使光伏系統(tǒng)由不可控轉(zhuǎn)化為可控電源,從而減小其對(duì)配網(wǎng)運(yùn)行的負(fù)面影響。在光伏、儲(chǔ)能成本相對(duì)昂貴的市場(chǎng)環(huán)景下,如何優(yōu)化含儲(chǔ)能光伏系統(tǒng)的容量配置,評(píng)價(jià)含儲(chǔ)能分布式系統(tǒng)經(jīng)濟(jì)性是一項(xiàng)重要研究課題。本文首先分析分布式光伏接入配電網(wǎng)對(duì)網(wǎng)絡(luò)損耗及系統(tǒng)電壓的影響;建立考慮功率損耗及電壓水平的分布式光伏-儲(chǔ)能系統(tǒng)出力優(yōu)化模型,并基于遺傳算法對(duì)模型求解,在配電網(wǎng)不同負(fù)荷水平下對(duì)分布式光-儲(chǔ)系統(tǒng)出力進(jìn)行優(yōu)化;在此基礎(chǔ)上,在滿足最低充放電約束下,考慮成本經(jīng)濟(jì)性對(duì)含儲(chǔ)能分布式光伏系統(tǒng)容量進(jìn)行配置,并分析不同光伏單位投資成本、儲(chǔ)能電池造價(jià)對(duì)分布式光-儲(chǔ)系統(tǒng)容量配置的影響。最后,構(gòu)建系統(tǒng)凈收益模型及經(jīng)濟(jì)性評(píng)價(jià)指標(biāo),對(duì)含儲(chǔ)能分布式光伏系統(tǒng)經(jīng)濟(jì)性進(jìn)行評(píng)估。通過算例分析表明,本文提出的計(jì)及損耗及電壓水平的分布式光伏-儲(chǔ)能系統(tǒng)容量配置方法使配網(wǎng)網(wǎng)損降為最低并提高電壓水平的同時(shí),實(shí)現(xiàn)了分布式光-儲(chǔ)系統(tǒng)成本最小化的目的,且該系統(tǒng)具有明顯經(jīng)濟(jì)效益。本文研究可為含儲(chǔ)能分布式光伏系統(tǒng)容量配置提供借鑒。
[Abstract]:Distributed photovoltaic is the key to the development of China's photovoltaic industry during the "XIII.", and it is beneficial to accelerate the application of distributed photovoltaic and to alleviate the energy crisis and environmental deterioration. With the large-scale distributed photovoltaic access distribution network, its volatility and randomness will make the electric energy quality problem more prominent, and have a negative effect on the power flow, voltage and loss of the power grid. By utilizing the energy storage system, the space-time translation of energy can be realized, and the photovoltaic system can be converted into a controllable power by using the energy storage system, so that the negative effect on the operation of the distribution network is reduced. How to optimize the capacity configuration of the energy storage photovoltaic system under the relatively expensive market environment of the photovoltaic and energy storage cost is an important research subject. In this paper, the effect of distributed photovoltaic access distribution network on network loss and system voltage is analyzed firstly, and a distributed photovoltaic-energy storage system output optimization model considering power loss and voltage level is established, and the model is solved based on the genetic algorithm. in that invention, the output of the distributed optical-storage system is optimize under the different load level of the distribution network, The effect of the cost of the energy storage battery on the capacity configuration of the distributed optical-storage system. Finally, the net profit model and economic evaluation index of the system are constructed, and the economy of the energy-storage distributed photovoltaic system is evaluated. The results show that the distributed photovoltaic-energy storage system capacity configuration method taking account of the loss and the voltage level in this paper is to minimize the loss of the distribution network and improve the voltage level, and realize the purpose of minimizing the cost of the distributed light-storage system. And the system has obvious economic benefit. The research of this paper can provide a reference for the capacity configuration of the distributed photovoltaic system with energy storage.
【學(xué)位授予單位】：東北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM61

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